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imsm: do not use blocks_per_member in array size calculations
[thirdparty/mdadm.git] / super-intel.c
CommitLineData
cdddbdbc
DW		 1/*
2 * mdadm - Intel(R) Matrix Storage Manager Support
3 *
a54d5262 4 * Copyright (C) 2002-2008 Intel Corporation
cdddbdbc
DW		 5 *
6 * This program is free software; you can redistribute it and/or modify it
7 * under the terms and conditions of the GNU General Public License,
8 * version 2, as published by the Free Software Foundation.
9 *
10 * This program is distributed in the hope it will be useful, but WITHOUT
11 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
12 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
13 * more details.
14 *
15 * You should have received a copy of the GNU General Public License along with
16 * this program; if not, write to the Free Software Foundation, Inc.,
17 * 51 Franklin St - Fifth Floor, Boston, MA 02110-1301 USA.
18 */
19
51006d85 20#define HAVE_STDINT_H 1
cdddbdbc 21#include "mdadm.h"
c2a1e7da 22#include "mdmon.h"
51006d85 23#include "sha1.h"
88c32bb1 24#include "platform-intel.h"
cdddbdbc
DW		 25#include <values.h>
26#include <scsi/sg.h>
27#include <ctype.h>
d665cc31 28#include <dirent.h>
cdddbdbc
DW		 29
30/* MPB == Metadata Parameter Block */
31#define MPB_SIGNATURE "Intel Raid ISM Cfg Sig. "
32#define MPB_SIG_LEN (strlen(MPB_SIGNATURE))
33#define MPB_VERSION_RAID0 "1.0.00"
34#define MPB_VERSION_RAID1 "1.1.00"
fe7ed8cb
DW		 35#define MPB_VERSION_MANY_VOLUMES_PER_ARRAY "1.2.00"
36#define MPB_VERSION_3OR4_DISK_ARRAY "1.2.01"
cdddbdbc 37#define MPB_VERSION_RAID5 "1.2.02"
fe7ed8cb
DW		 38#define MPB_VERSION_5OR6_DISK_ARRAY "1.2.04"
39#define MPB_VERSION_CNG "1.2.06"
40#define MPB_VERSION_ATTRIBS "1.3.00"
cdddbdbc
DW		 41#define MAX_SIGNATURE_LENGTH 32
42#define MAX_RAID_SERIAL_LEN 16
fe7ed8cb 43
19482bcc
AK		 44/* supports RAID0 */
45#define MPB_ATTRIB_RAID0 __cpu_to_le32(0x00000001)
46/* supports RAID1 */
47#define MPB_ATTRIB_RAID1 __cpu_to_le32(0x00000002)
48/* supports RAID10 */
49#define MPB_ATTRIB_RAID10 __cpu_to_le32(0x00000004)
50/* supports RAID1E */
51#define MPB_ATTRIB_RAID1E __cpu_to_le32(0x00000008)
52/* supports RAID5 */
53#define MPB_ATTRIB_RAID5 __cpu_to_le32(0x00000010)
54/* supports RAID CNG */
55#define MPB_ATTRIB_RAIDCNG __cpu_to_le32(0x00000020)
56/* supports expanded stripe sizes of 256K, 512K and 1MB */
57#define MPB_ATTRIB_EXP_STRIPE_SIZE __cpu_to_le32(0x00000040)
58
59/* The OROM Support RST Caching of Volumes */
60#define MPB_ATTRIB_NVM __cpu_to_le32(0x02000000)
61/* The OROM supports creating disks greater than 2TB */
62#define MPB_ATTRIB_2TB_DISK __cpu_to_le32(0x04000000)
63/* The OROM supports Bad Block Management */
64#define MPB_ATTRIB_BBM __cpu_to_le32(0x08000000)
65
66/* THe OROM Supports NVM Caching of Volumes */
67#define MPB_ATTRIB_NEVER_USE2 __cpu_to_le32(0x10000000)
68/* The OROM supports creating volumes greater than 2TB */
69#define MPB_ATTRIB_2TB __cpu_to_le32(0x20000000)
70/* originally for PMP, now it's wasted b/c. Never use this bit! */
71#define MPB_ATTRIB_NEVER_USE __cpu_to_le32(0x40000000)
72/* Verify MPB contents against checksum after reading MPB */
73#define MPB_ATTRIB_CHECKSUM_VERIFY __cpu_to_le32(0x80000000)
74
75/* Define all supported attributes that have to be accepted by mdadm
76 */
418f9b36 77#define MPB_ATTRIB_SUPPORTED (MPB_ATTRIB_CHECKSUM_VERIFY | \
19482bcc
AK		 78 MPB_ATTRIB_2TB | \
79 MPB_ATTRIB_2TB_DISK | \
80 MPB_ATTRIB_RAID0 | \
81 MPB_ATTRIB_RAID1 | \
82 MPB_ATTRIB_RAID10 | \
83 MPB_ATTRIB_RAID5 | \
bbab0940
TM		 84 MPB_ATTRIB_EXP_STRIPE_SIZE | \
85 MPB_ATTRIB_BBM)
418f9b36
N		 86
87/* Define attributes that are unused but not harmful */
88#define MPB_ATTRIB_IGNORED (MPB_ATTRIB_NEVER_USE)
fe7ed8cb 89
8e59f3d8 90#define MPB_SECTOR_CNT 2210
611d9529
MD		 91#define IMSM_RESERVED_SECTORS 8192
92#define NUM_BLOCKS_DIRTY_STRIPE_REGION 2048
979d38be 93#define SECT_PER_MB_SHIFT 11
f36a9ecd 94#define MAX_SECTOR_SIZE 4096
c2462068
PB		 95#define MULTIPLE_PPL_AREA_SIZE_IMSM (1024 * 1024) /* Size of the whole
96 * mutliple PPL area
97 */
cdddbdbc
DW		 98
99/* Disk configuration info. */
100#define IMSM_MAX_DEVICES 255
101struct imsm_disk {
102 __u8 serial[MAX_RAID_SERIAL_LEN];/* 0xD8 - 0xE7 ascii serial number */
5551b113 103 __u32 total_blocks_lo; /* 0xE8 - 0xEB total blocks lo */
cdddbdbc 104 __u32 scsi_id; /* 0xEC - 0xEF scsi ID */
f2f27e63
DW		 105#define SPARE_DISK __cpu_to_le32(0x01) /* Spare */
106#define CONFIGURED_DISK __cpu_to_le32(0x02) /* Member of some RaidDev */
107#define FAILED_DISK __cpu_to_le32(0x04) /* Permanent failure */
2432ce9b 108#define JOURNAL_DISK __cpu_to_le32(0x2000000) /* Device marked as Journaling Drive */
cdddbdbc 109 __u32 status; /* 0xF0 - 0xF3 */
1011e834 110 __u32 owner_cfg_num; /* which config 0,1,2... owns this disk */
5551b113
CA		 111 __u32 total_blocks_hi; /* 0xF4 - 0xF5 total blocks hi */
112#define IMSM_DISK_FILLERS 3
113 __u32 filler[IMSM_DISK_FILLERS]; /* 0xF5 - 0x107 MPB_DISK_FILLERS for future expansion */
cdddbdbc
DW		 114};
115
3b451610
AK		 116/* map selector for map managment
117 */
238c0a71
AK		 118#define MAP_0 0
119#define MAP_1 1
120#define MAP_X -1
3b451610 121
cdddbdbc
DW		 122/* RAID map configuration infos. */
123struct imsm_map {
5551b113
CA		 124 __u32 pba_of_lba0_lo; /* start address of partition */
125 __u32 blocks_per_member_lo;/* blocks per member */
126 __u32 num_data_stripes_lo; /* number of data stripes */
cdddbdbc
DW		 127 __u16 blocks_per_strip;
128 __u8 map_state; /* Normal, Uninitialized, Degraded, Failed */
129#define IMSM_T_STATE_NORMAL 0
130#define IMSM_T_STATE_UNINITIALIZED 1
e3bba0e0
DW		 131#define IMSM_T_STATE_DEGRADED 2
132#define IMSM_T_STATE_FAILED 3
cdddbdbc
DW		 133 __u8 raid_level;
134#define IMSM_T_RAID0 0
135#define IMSM_T_RAID1 1
136#define IMSM_T_RAID5 5 /* since metadata version 1.2.02 ? */
137 __u8 num_members; /* number of member disks */
fe7ed8cb
DW		 138 __u8 num_domains; /* number of parity domains */
139 __u8 failed_disk_num; /* valid only when state is degraded */
252d23c0 140 __u8 ddf;
5551b113
CA		 141 __u32 pba_of_lba0_hi;
142 __u32 blocks_per_member_hi;
143 __u32 num_data_stripes_hi;
144 __u32 filler[4]; /* expansion area */
7eef0453 145#define IMSM_ORD_REBUILD (1 << 24)
cdddbdbc 146 __u32 disk_ord_tbl[1]; /* disk_ord_tbl[num_members],
7eef0453
DW		 147 * top byte contains some flags
148 */
cdddbdbc
DW		 149} __attribute__ ((packed));
150
151struct imsm_vol {
f8f603f1 152 __u32 curr_migr_unit;
fe7ed8cb 153 __u32 checkpoint_id; /* id to access curr_migr_unit */
cdddbdbc 154 __u8 migr_state; /* Normal or Migrating */
e3bba0e0
DW		 155#define MIGR_INIT 0
156#define MIGR_REBUILD 1
157#define MIGR_VERIFY 2 /* analagous to echo check > sync_action */
158#define MIGR_GEN_MIGR 3
159#define MIGR_STATE_CHANGE 4
1484e727 160#define MIGR_REPAIR 5
cdddbdbc 161 __u8 migr_type; /* Initializing, Rebuilding, ... */
2432ce9b
AP		 162#define RAIDVOL_CLEAN 0
163#define RAIDVOL_DIRTY 1
164#define RAIDVOL_DSRECORD_VALID 2
cdddbdbc 165 __u8 dirty;
fe7ed8cb
DW		 166 __u8 fs_state; /* fast-sync state for CnG (0xff == disabled) */
167 __u16 verify_errors; /* number of mismatches */
168 __u16 bad_blocks; /* number of bad blocks during verify */
169 __u32 filler[4];
cdddbdbc
DW		 170 struct imsm_map map[1];
171 /* here comes another one if migr_state */
172} __attribute__ ((packed));
173
174struct imsm_dev {
fe7ed8cb 175 __u8 volume[MAX_RAID_SERIAL_LEN];
cdddbdbc
DW		 176 __u32 size_low;
177 __u32 size_high;
fe7ed8cb
DW		 178#define DEV_BOOTABLE __cpu_to_le32(0x01)
179#define DEV_BOOT_DEVICE __cpu_to_le32(0x02)
180#define DEV_READ_COALESCING __cpu_to_le32(0x04)
181#define DEV_WRITE_COALESCING __cpu_to_le32(0x08)
182#define DEV_LAST_SHUTDOWN_DIRTY __cpu_to_le32(0x10)
183#define DEV_HIDDEN_AT_BOOT __cpu_to_le32(0x20)
184#define DEV_CURRENTLY_HIDDEN __cpu_to_le32(0x40)
185#define DEV_VERIFY_AND_FIX __cpu_to_le32(0x80)
186#define DEV_MAP_STATE_UNINIT __cpu_to_le32(0x100)
187#define DEV_NO_AUTO_RECOVERY __cpu_to_le32(0x200)
188#define DEV_CLONE_N_GO __cpu_to_le32(0x400)
189#define DEV_CLONE_MAN_SYNC __cpu_to_le32(0x800)
190#define DEV_CNG_MASTER_DISK_NUM __cpu_to_le32(0x1000)
cdddbdbc
DW		 191 __u32 status; /* Persistent RaidDev status */
192 __u32 reserved_blocks; /* Reserved blocks at beginning of volume */
fe7ed8cb
DW		 193 __u8 migr_priority;
194 __u8 num_sub_vols;
195 __u8 tid;
196 __u8 cng_master_disk;
197 __u16 cache_policy;
198 __u8 cng_state;
199 __u8 cng_sub_state;
2432ce9b
AP		 200 __u16 my_vol_raid_dev_num; /* Used in Unique volume Id for this RaidDev */
201
202 /* NVM_EN */
203 __u8 nv_cache_mode;
204 __u8 nv_cache_flags;
205
206 /* Unique Volume Id of the NvCache Volume associated with this volume */
207 __u32 nvc_vol_orig_family_num;
208 __u16 nvc_vol_raid_dev_num;
209
210#define RWH_OFF 0
211#define RWH_DISTRIBUTED 1
212#define RWH_JOURNALING_DRIVE 2
c2462068
PB		 213#define RWH_MULTIPLE_DISTRIBUTED 3
214#define RWH_MULTIPLE_PPLS_JOURNALING_DRIVE 4
215#define RWH_MULTIPLE_OFF 5
2432ce9b
AP		 216 __u8 rwh_policy; /* Raid Write Hole Policy */
217 __u8 jd_serial[MAX_RAID_SERIAL_LEN]; /* Journal Drive serial number */
218 __u8 filler1;
219
220#define IMSM_DEV_FILLERS 3
cdddbdbc
DW		 221 __u32 filler[IMSM_DEV_FILLERS];
222 struct imsm_vol vol;
223} __attribute__ ((packed));
224
225struct imsm_super {
226 __u8 sig[MAX_SIGNATURE_LENGTH]; /* 0x00 - 0x1F */
227 __u32 check_sum; /* 0x20 - 0x23 MPB Checksum */
228 __u32 mpb_size; /* 0x24 - 0x27 Size of MPB */
229 __u32 family_num; /* 0x28 - 0x2B Checksum from first time this config was written */
230 __u32 generation_num; /* 0x2C - 0x2F Incremented each time this array's MPB is written */
604b746f
JD		 231 __u32 error_log_size; /* 0x30 - 0x33 in bytes */
232 __u32 attributes; /* 0x34 - 0x37 */
cdddbdbc
DW		 233 __u8 num_disks; /* 0x38 Number of configured disks */
234 __u8 num_raid_devs; /* 0x39 Number of configured volumes */
604b746f
JD		 235 __u8 error_log_pos; /* 0x3A */
236 __u8 fill[1]; /* 0x3B */
237 __u32 cache_size; /* 0x3c - 0x40 in mb */
238 __u32 orig_family_num; /* 0x40 - 0x43 original family num */
239 __u32 pwr_cycle_count; /* 0x44 - 0x47 simulated power cycle count for array */
240 __u32 bbm_log_size; /* 0x48 - 0x4B - size of bad Block Mgmt Log in bytes */
2a24dc1b
PB		 241 __u16 num_raid_devs_created; /* 0x4C - 0x4D Used for generating unique
242 * volume IDs for raid_dev created in this array
243 * (starts at 1)
244 */
245 __u16 filler1; /* 0x4E - 0x4F */
246#define IMSM_FILLERS 34
247 __u32 filler[IMSM_FILLERS]; /* 0x50 - 0xD7 RAID_MPB_FILLERS */
cdddbdbc
DW		 248 struct imsm_disk disk[1]; /* 0xD8 diskTbl[numDisks] */
249 /* here comes imsm_dev[num_raid_devs] */
604b746f 250 /* here comes BBM logs */
cdddbdbc
DW		 251} __attribute__ ((packed));
252
604b746f 253#define BBM_LOG_MAX_ENTRIES 254
8d67477f
TM		 254#define BBM_LOG_MAX_LBA_ENTRY_VAL 256 /* Represents 256 LBAs */
255#define BBM_LOG_SIGNATURE 0xabadb10c
256
257struct bbm_log_block_addr {
258 __u16 w1;
259 __u32 dw1;
260} __attribute__ ((__packed__));
604b746f
JD		 261
262struct bbm_log_entry {
8d67477f
TM		 263 __u8 marked_count; /* Number of blocks marked - 1 */
264 __u8 disk_ordinal; /* Disk entry within the imsm_super */
265 struct bbm_log_block_addr defective_block_start;
604b746f
JD		 266} __attribute__ ((__packed__));
267
268struct bbm_log {
269 __u32 signature; /* 0xABADB10C */
270 __u32 entry_count;
8d67477f 271 struct bbm_log_entry marked_block_entries[BBM_LOG_MAX_ENTRIES];
604b746f
JD		 272} __attribute__ ((__packed__));
273
cdddbdbc 274static char *map_state_str[] = { "normal", "uninitialized", "degraded", "failed" };
cdddbdbc 275
b53bfba6
TM		 276#define BLOCKS_PER_KB (1024/512)
277
8e59f3d8
AK		 278#define RAID_DISK_RESERVED_BLOCKS_IMSM_HI 2209
279
280#define GEN_MIGR_AREA_SIZE 2048 /* General Migration Copy Area size in blocks */
281
de44e46f
PB		 282#define MIGR_REC_BUF_SECTORS 1 /* size of migr_record i/o buffer in sectors */
283#define MIGR_REC_SECTOR_POSITION 1 /* migr_record position offset on disk,
284 * MIGR_REC_BUF_SECTORS <= MIGR_REC_SECTOR_POS
17a4eaf9
AK		 285 */
286
8e59f3d8
AK		 287#define UNIT_SRC_NORMAL 0 /* Source data for curr_migr_unit must
288 * be recovered using srcMap */
289#define UNIT_SRC_IN_CP_AREA 1 /* Source data for curr_migr_unit has
290 * already been migrated and must
291 * be recovered from checkpoint area */
2432ce9b 292
c2462068 293#define PPL_ENTRY_SPACE (128 * 1024) /* Size of single PPL, without the header */
2432ce9b 294
8e59f3d8
AK		 295struct migr_record {
296 __u32 rec_status; /* Status used to determine how to restart
297 * migration in case it aborts
298 * in some fashion */
299 __u32 curr_migr_unit; /* 0..numMigrUnits-1 */
300 __u32 family_num; /* Family number of MPB
301 * containing the RaidDev
302 * that is migrating */
303 __u32 ascending_migr; /* True if migrating in increasing
304 * order of lbas */
305 __u32 blocks_per_unit; /* Num disk blocks per unit of operation */
306 __u32 dest_depth_per_unit; /* Num member blocks each destMap
307 * member disk
308 * advances per unit-of-operation */
309 __u32 ckpt_area_pba; /* Pba of first block of ckpt copy area */
310 __u32 dest_1st_member_lba; /* First member lba on first
311 * stripe of destination */
312 __u32 num_migr_units; /* Total num migration units-of-op */
313 __u32 post_migr_vol_cap; /* Size of volume after
314 * migration completes */
315 __u32 post_migr_vol_cap_hi; /* Expansion space for LBA64 */
316 __u32 ckpt_read_disk_num; /* Which member disk in destSubMap[0] the
317 * migration ckpt record was read from
318 * (for recovered migrations) */
319} __attribute__ ((__packed__));
320
ec50f7b6
LM		 321struct md_list {
322 /* usage marker:
323 * 1: load metadata
324 * 2: metadata does not match
325 * 4: already checked
326 */
327 int used;
328 char *devname;
329 int found;
330 int container;
331 dev_t st_rdev;
332 struct md_list *next;
333};
334
e7b84f9d 335#define pr_vrb(fmt, arg...) (void) (verbose && pr_err(fmt, ##arg))
ec50f7b6 336
1484e727
DW		 337static __u8 migr_type(struct imsm_dev *dev)
338{
339 if (dev->vol.migr_type == MIGR_VERIFY &&
340 dev->status & DEV_VERIFY_AND_FIX)
341 return MIGR_REPAIR;
342 else
343 return dev->vol.migr_type;
344}
345
346static void set_migr_type(struct imsm_dev *dev, __u8 migr_type)
347{
348 /* for compatibility with older oroms convert MIGR_REPAIR, into
349 * MIGR_VERIFY w/ DEV_VERIFY_AND_FIX status
350 */
351 if (migr_type == MIGR_REPAIR) {
352 dev->vol.migr_type = MIGR_VERIFY;
353 dev->status |= DEV_VERIFY_AND_FIX;
354 } else {
355 dev->vol.migr_type = migr_type;
356 dev->status &= ~DEV_VERIFY_AND_FIX;
357 }
358}
359
f36a9ecd 360static unsigned int sector_count(__u32 bytes, unsigned int sector_size)
cdddbdbc 361{
f36a9ecd 362 return ROUND_UP(bytes, sector_size) / sector_size;
87eb16df 363}
cdddbdbc 364
f36a9ecd
PB		 365static unsigned int mpb_sectors(struct imsm_super *mpb,
366 unsigned int sector_size)
87eb16df 367{
f36a9ecd 368 return sector_count(__le32_to_cpu(mpb->mpb_size), sector_size);
cdddbdbc
DW		 369}
370
ba2de7ba
DW		 371struct intel_dev {
372 struct imsm_dev *dev;
373 struct intel_dev *next;
f21e18ca 374 unsigned index;
ba2de7ba
DW		 375};
376
88654014
LM		 377struct intel_hba {
378 enum sys_dev_type type;
379 char *path;
380 char *pci_id;
381 struct intel_hba *next;
382};
383
1a64be56
LM		 384enum action {
385 DISK_REMOVE = 1,
386 DISK_ADD
387};
cdddbdbc
DW		 388/* internal representation of IMSM metadata */
389struct intel_super {
390 union {
949c47a0
DW		 391 void *buf; /* O_DIRECT buffer for reading/writing metadata */
392 struct imsm_super *anchor; /* immovable parameters */
cdddbdbc 393 };
8e59f3d8
AK		 394 union {
395 void *migr_rec_buf; /* buffer for I/O operations */
396 struct migr_record *migr_rec; /* migration record */
397 };
51d83f5d
AK		 398 int clean_migration_record_by_mdmon; /* when reshape is switched to next
399 array, it indicates that mdmon is allowed to clean migration
400 record */
949c47a0 401 size_t len; /* size of the 'buf' allocation */
bbab0940 402 size_t extra_space; /* extra space in 'buf' that is not used yet */
4d7b1503
DW		 403 void *next_buf; /* for realloc'ing buf from the manager */
404 size_t next_len;
c2c087e6 405 int updates_pending; /* count of pending updates for mdmon */
bf5a934a 406 int current_vol; /* index of raid device undergoing creation */
5551b113 407 unsigned long long create_offset; /* common start for 'current_vol' */
148acb7b 408 __u32 random; /* random data for seeding new family numbers */
ba2de7ba 409 struct intel_dev *devlist;
fa7bb6f8 410 unsigned int sector_size; /* sector size of used member drives */
cdddbdbc
DW		 411 struct dl {
412 struct dl *next;
413 int index;
414 __u8 serial[MAX_RAID_SERIAL_LEN];
415 int major, minor;
416 char *devname;
b9f594fe 417 struct imsm_disk disk;
cdddbdbc 418 int fd;
0dcecb2e
DW		 419 int extent_cnt;
420 struct extent *e; /* for determining freespace @ create */
efb30e7f 421 int raiddisk; /* slot to fill in autolayout */
1a64be56 422 enum action action;
ca0748fa 423 } *disks, *current_disk;
1a64be56
LM		 424 struct dl *disk_mgmt_list; /* list of disks to add/remove while mdmon
425 active */
47ee5a45 426 struct dl *missing; /* disks removed while we weren't looking */
43dad3d6 427 struct bbm_log *bbm_log;
88654014 428 struct intel_hba *hba; /* device path of the raid controller for this metadata */
88c32bb1 429 const struct imsm_orom *orom; /* platform firmware support */
a2b97981 430 struct intel_super *next; /* (temp) list for disambiguating family_num */
928f1424 431 struct md_bb bb; /* memory for get_bad_blocks call */
a2b97981
DW		 432};
433
434struct intel_disk {
435 struct imsm_disk disk;
436 #define IMSM_UNKNOWN_OWNER (-1)
437 int owner;
438 struct intel_disk *next;
cdddbdbc
DW		 439};
440
c2c087e6
DW		 441struct extent {
442 unsigned long long start, size;
443};
444
694575e7
KW		 445/* definitions of reshape process types */
446enum imsm_reshape_type {
447 CH_TAKEOVER,
b5347799 448 CH_MIGRATION,
7abc9871 449 CH_ARRAY_SIZE,
694575e7
KW		 450};
451
88758e9d
DW		 452/* definition of messages passed to imsm_process_update */
453enum imsm_update_type {
454 update_activate_spare,
8273f55e 455 update_create_array,
33414a01 456 update_kill_array,
aa534678 457 update_rename_array,
1a64be56 458 update_add_remove_disk,
78b10e66 459 update_reshape_container_disks,
48c5303a 460 update_reshape_migration,
2d40f3a1
AK		 461 update_takeover,
462 update_general_migration_checkpoint,
f3871fdc 463 update_size_change,
bbab0940 464 update_prealloc_badblocks_mem,
e6e9dd3f 465 update_rwh_policy,
88758e9d
DW		 466};
467
468struct imsm_update_activate_spare {
469 enum imsm_update_type type;
d23fe947 470 struct dl *dl;
88758e9d
DW		 471 int slot;
472 int array;
473 struct imsm_update_activate_spare *next;
474};
475
78b10e66 476struct geo_params {
4dd2df09 477 char devnm[32];
78b10e66 478 char *dev_name;
d04f65f4 479 unsigned long long size;
78b10e66
N		 480 int level;
481 int layout;
482 int chunksize;
483 int raid_disks;
484};
485
bb025c2f
KW		 486enum takeover_direction {
487 R10_TO_R0,
488 R0_TO_R10
489};
490struct imsm_update_takeover {
491 enum imsm_update_type type;
492 int subarray;
493 enum takeover_direction direction;
494};
78b10e66
N		 495
496struct imsm_update_reshape {
497 enum imsm_update_type type;
498 int old_raid_disks;
499 int new_raid_disks;
48c5303a
PC		 500
501 int new_disks[1]; /* new_raid_disks - old_raid_disks makedev number */
502};
503
504struct imsm_update_reshape_migration {
505 enum imsm_update_type type;
506 int old_raid_disks;
507 int new_raid_disks;
508 /* fields for array migration changes
509 */
510 int subdev;
511 int new_level;
512 int new_layout;
4bba0439 513 int new_chunksize;
48c5303a 514
d195167d 515 int new_disks[1]; /* new_raid_disks - old_raid_disks makedev number */
78b10e66
N		 516};
517
f3871fdc
AK		 518struct imsm_update_size_change {
519 enum imsm_update_type type;
520 int subdev;
521 long long new_size;
522};
523
2d40f3a1
AK		 524struct imsm_update_general_migration_checkpoint {
525 enum imsm_update_type type;
526 __u32 curr_migr_unit;
527};
528
54c2c1ea
DW		 529struct disk_info {
530 __u8 serial[MAX_RAID_SERIAL_LEN];
531};
532
8273f55e
DW		 533struct imsm_update_create_array {
534 enum imsm_update_type type;
8273f55e 535 int dev_idx;
6a3e913e 536 struct imsm_dev dev;
8273f55e
DW		 537};
538
33414a01
DW		 539struct imsm_update_kill_array {
540 enum imsm_update_type type;
541 int dev_idx;
542};
543
aa534678
DW		 544struct imsm_update_rename_array {
545 enum imsm_update_type type;
546 __u8 name[MAX_RAID_SERIAL_LEN];
547 int dev_idx;
548};
549
1a64be56 550struct imsm_update_add_remove_disk {
43dad3d6
DW		 551 enum imsm_update_type type;
552};
553
bbab0940
TM		 554struct imsm_update_prealloc_bb_mem {
555 enum imsm_update_type type;
556};
557
e6e9dd3f
AP		 558struct imsm_update_rwh_policy {
559 enum imsm_update_type type;
560 int new_policy;
561 int dev_idx;
562};
563
88654014
LM		 564static const char *_sys_dev_type[] = {
565 [SYS_DEV_UNKNOWN] = "Unknown",
566 [SYS_DEV_SAS] = "SAS",
614902f6 567 [SYS_DEV_SATA] = "SATA",
60f0f54d
PB		 568 [SYS_DEV_NVME] = "NVMe",
569 [SYS_DEV_VMD] = "VMD"
88654014
LM		 570};
571
572const char *get_sys_dev_type(enum sys_dev_type type)
573{
574 if (type >= SYS_DEV_MAX)
575 type = SYS_DEV_UNKNOWN;
576
577 return _sys_dev_type[type];
578}
579
580static struct intel_hba * alloc_intel_hba(struct sys_dev *device)
581{
503975b9
N		 582 struct intel_hba *result = xmalloc(sizeof(*result));
583
584 result->type = device->type;
585 result->path = xstrdup(device->path);
586 result->next = NULL;
587 if (result->path && (result->pci_id = strrchr(result->path, '/')) != NULL)
588 result->pci_id++;
589
88654014
LM		 590 return result;
591}
592
593static struct intel_hba * find_intel_hba(struct intel_hba *hba, struct sys_dev *device)
594{
594dc1b8
JS		 595 struct intel_hba *result;
596
88654014
LM		 597 for (result = hba; result; result = result->next) {
598 if (result->type == device->type && strcmp(result->path, device->path) == 0)
599 break;
600 }
601 return result;
602}
603
b4cf4cba 604static int attach_hba_to_super(struct intel_super *super, struct sys_dev *device)
88654014
LM		 605{
606 struct intel_hba *hba;
607
608 /* check if disk attached to Intel HBA */
609 hba = find_intel_hba(super->hba, device);
610 if (hba != NULL)
611 return 1;
612 /* Check if HBA is already attached to super */
613 if (super->hba == NULL) {
614 super->hba = alloc_intel_hba(device);
615 return 1;
6b781d33
AP		 616 }
617
618 hba = super->hba;
619 /* Intel metadata allows for all disks attached to the same type HBA.
614902f6 620 * Do not support HBA types mixing
6b781d33
AP		 621 */
622 if (device->type != hba->type)
88654014 623 return 2;
6b781d33
AP		 624
625 /* Multiple same type HBAs can be used if they share the same OROM */
626 const struct imsm_orom *device_orom = get_orom_by_device_id(device->dev_id);
627
628 if (device_orom != super->orom)
629 return 2;
630
631 while (hba->next)
632 hba = hba->next;
633
634 hba->next = alloc_intel_hba(device);
635 return 1;
88654014
LM		 636}
637
638static struct sys_dev* find_disk_attached_hba(int fd, const char *devname)
639{
9bc4ae77 640 struct sys_dev *list, *elem;
88654014
LM		 641 char *disk_path;
642
643 if ((list = find_intel_devices()) == NULL)
644 return 0;
645
646 if (fd < 0)
647 disk_path = (char *) devname;
648 else
649 disk_path = diskfd_to_devpath(fd);
650
9bc4ae77 651 if (!disk_path)
88654014 652 return 0;
88654014 653
9bc4ae77
N		 654 for (elem = list; elem; elem = elem->next)
655 if (path_attached_to_hba(disk_path, elem->path))
88654014 656 return elem;
9bc4ae77 657
88654014
LM		 658 if (disk_path != devname)
659 free(disk_path);
88654014
LM		 660
661 return NULL;
662}
663
d424212e
N		 664static int find_intel_hba_capability(int fd, struct intel_super *super,
665 char *devname);
f2f5c343 666
cdddbdbc
DW		 667static struct supertype *match_metadata_desc_imsm(char *arg)
668{
669 struct supertype *st;
670
671 if (strcmp(arg, "imsm") != 0 &&
672 strcmp(arg, "default") != 0
673 )
674 return NULL;
675
503975b9 676 st = xcalloc(1, sizeof(*st));
cdddbdbc
DW		 677 st->ss = &super_imsm;
678 st->max_devs = IMSM_MAX_DEVICES;
679 st->minor_version = 0;
680 st->sb = NULL;
681 return st;
682}
683
cdddbdbc
DW		 684static __u8 *get_imsm_version(struct imsm_super *mpb)
685{
686 return &mpb->sig[MPB_SIG_LEN];
687}
688
949c47a0
DW		 689/* retrieve a disk directly from the anchor when the anchor is known to be
690 * up-to-date, currently only at load time
691 */
692static struct imsm_disk *__get_imsm_disk(struct imsm_super *mpb, __u8 index)
cdddbdbc 693{
949c47a0 694 if (index >= mpb->num_disks)
cdddbdbc
DW		 695 return NULL;
696 return &mpb->disk[index];
697}
698
95d07a2c
LM		 699/* retrieve the disk description based on a index of the disk
700 * in the sub-array
701 */
702static struct dl *get_imsm_dl_disk(struct intel_super *super, __u8 index)
949c47a0 703{
b9f594fe
DW		 704 struct dl *d;
705
706 for (d = super->disks; d; d = d->next)
707 if (d->index == index)
95d07a2c
LM		 708 return d;
709
710 return NULL;
711}
712/* retrieve a disk from the parsed metadata */
713static struct imsm_disk *get_imsm_disk(struct intel_super *super, __u8 index)
714{
715 struct dl *dl;
716
717 dl = get_imsm_dl_disk(super, index);
718 if (dl)
719 return &dl->disk;
720
b9f594fe 721 return NULL;
949c47a0
DW		 722}
723
724/* generate a checksum directly from the anchor when the anchor is known to be
725 * up-to-date, currently only at load or write_super after coalescing
726 */
727static __u32 __gen_imsm_checksum(struct imsm_super *mpb)
cdddbdbc
DW		 728{
729 __u32 end = mpb->mpb_size / sizeof(end);
730 __u32 *p = (__u32 *) mpb;
731 __u32 sum = 0;
732
5d500228
N		 733 while (end--) {
734 sum += __le32_to_cpu(*p);
97f734fd
N		 735 p++;
736 }
cdddbdbc 737
5d500228 738 return sum - __le32_to_cpu(mpb->check_sum);
cdddbdbc
DW		 739}
740
a965f303
DW		 741static size_t sizeof_imsm_map(struct imsm_map *map)
742{
743 return sizeof(struct imsm_map) + sizeof(__u32) * (map->num_members - 1);
744}
745
746struct imsm_map *get_imsm_map(struct imsm_dev *dev, int second_map)
cdddbdbc 747{
5e7b0330
AK		 748 /* A device can have 2 maps if it is in the middle of a migration.
749 * If second_map is:
238c0a71
AK		 750 * MAP_0 - we return the first map
751 * MAP_1 - we return the second map if it exists, else NULL
752 * MAP_X - we return the second map if it exists, else the first
5e7b0330 753 */
a965f303 754 struct imsm_map *map = &dev->vol.map[0];
9535fc47 755 struct imsm_map *map2 = NULL;
a965f303 756
9535fc47
AK		 757 if (dev->vol.migr_state)
758 map2 = (void *)map + sizeof_imsm_map(map);
a965f303 759
9535fc47 760 switch (second_map) {
3b451610 761 case MAP_0:
9535fc47 762 break;
3b451610 763 case MAP_1:
9535fc47
AK		 764 map = map2;
765 break;
238c0a71 766 case MAP_X:
9535fc47
AK		 767 if (map2)
768 map = map2;
769 break;
9535fc47
AK		 770 default:
771 map = NULL;
772 }
773 return map;
5e7b0330 774
a965f303 775}
cdddbdbc 776
3393c6af
DW		 777/* return the size of the device.
778 * migr_state increases the returned size if map[0] were to be duplicated
779 */
780static size_t sizeof_imsm_dev(struct imsm_dev *dev, int migr_state)
a965f303
DW		 781{
782 size_t size = sizeof(*dev) - sizeof(struct imsm_map) +
238c0a71 783 sizeof_imsm_map(get_imsm_map(dev, MAP_0));
cdddbdbc
DW		 784
785 /* migrating means an additional map */
a965f303 786 if (dev->vol.migr_state)
238c0a71 787 size += sizeof_imsm_map(get_imsm_map(dev, MAP_1));
3393c6af 788 else if (migr_state)
238c0a71 789 size += sizeof_imsm_map(get_imsm_map(dev, MAP_0));
cdddbdbc
DW		 790
791 return size;
792}
793
54c2c1ea
DW		 794/* retrieve disk serial number list from a metadata update */
795static struct disk_info *get_disk_info(struct imsm_update_create_array *update)
796{
797 void *u = update;
798 struct disk_info *inf;
799
800 inf = u + sizeof(*update) - sizeof(struct imsm_dev) +
801 sizeof_imsm_dev(&update->dev, 0);
802
803 return inf;
804}
54c2c1ea 805
949c47a0 806static struct imsm_dev *__get_imsm_dev(struct imsm_super *mpb, __u8 index)
cdddbdbc
DW		 807{
808 int offset;
809 int i;
810 void *_mpb = mpb;
811
949c47a0 812 if (index >= mpb->num_raid_devs)
cdddbdbc
DW		 813 return NULL;
814
815 /* devices start after all disks */
816 offset = ((void *) &mpb->disk[mpb->num_disks]) - _mpb;
817
818 for (i = 0; i <= index; i++)
819 if (i == index)
820 return _mpb + offset;
821 else
3393c6af 822 offset += sizeof_imsm_dev(_mpb + offset, 0);
cdddbdbc
DW		 823
824 return NULL;
825}
826
949c47a0
DW		 827static struct imsm_dev *get_imsm_dev(struct intel_super *super, __u8 index)
828{
ba2de7ba
DW		 829 struct intel_dev *dv;
830
949c47a0
DW		 831 if (index >= super->anchor->num_raid_devs)
832 return NULL;
ba2de7ba
DW		 833 for (dv = super->devlist; dv; dv = dv->next)
834 if (dv->index == index)
835 return dv->dev;
836 return NULL;
949c47a0
DW		 837}
838
8d67477f
TM		 839static inline unsigned long long __le48_to_cpu(const struct bbm_log_block_addr
840 *addr)
841{
842 return ((((__u64)__le32_to_cpu(addr->dw1)) << 16) |
843 __le16_to_cpu(addr->w1));
844}
845
846static inline struct bbm_log_block_addr __cpu_to_le48(unsigned long long sec)
847{
848 struct bbm_log_block_addr addr;
849
850 addr.w1 = __cpu_to_le16((__u16)(sec & 0xffff));
851 addr.dw1 = __cpu_to_le32((__u32)(sec >> 16) & 0xffffffff);
852 return addr;
853}
854
8d67477f
TM		 855/* get size of the bbm log */
856static __u32 get_imsm_bbm_log_size(struct bbm_log *log)
857{
858 if (!log || log->entry_count == 0)
859 return 0;
860
861 return sizeof(log->signature) +
862 sizeof(log->entry_count) +
863 log->entry_count * sizeof(struct bbm_log_entry);
864}
6f50473f
TM		 865
866/* check if bad block is not partially stored in bbm log */
867static int is_stored_in_bbm(struct bbm_log *log, const __u8 idx, const unsigned
868 long long sector, const int length, __u32 *pos)
869{
870 __u32 i;
871
872 for (i = *pos; i < log->entry_count; i++) {
873 struct bbm_log_entry *entry = &log->marked_block_entries[i];
874 unsigned long long bb_start;
875 unsigned long long bb_end;
876
877 bb_start = __le48_to_cpu(&entry->defective_block_start);
878 bb_end = bb_start + (entry->marked_count + 1);
879
880 if ((entry->disk_ordinal == idx) && (bb_start >= sector) &&
881 (bb_end <= sector + length)) {
882 *pos = i;
883 return 1;
884 }
885 }
886 return 0;
887}
888
889/* record new bad block in bbm log */
890static int record_new_badblock(struct bbm_log *log, const __u8 idx, unsigned
891 long long sector, int length)
892{
893 int new_bb = 0;
894 __u32 pos = 0;
895 struct bbm_log_entry *entry = NULL;
896
897 while (is_stored_in_bbm(log, idx, sector, length, &pos)) {
898 struct bbm_log_entry *e = &log->marked_block_entries[pos];
899
900 if ((e->marked_count + 1 == BBM_LOG_MAX_LBA_ENTRY_VAL) &&
901 (__le48_to_cpu(&e->defective_block_start) == sector)) {
902 sector += BBM_LOG_MAX_LBA_ENTRY_VAL;
903 length -= BBM_LOG_MAX_LBA_ENTRY_VAL;
904 pos = pos + 1;
905 continue;
906 }
907 entry = e;
908 break;
909 }
910
911 if (entry) {
912 int cnt = (length <= BBM_LOG_MAX_LBA_ENTRY_VAL) ? length :
913 BBM_LOG_MAX_LBA_ENTRY_VAL;
914 entry->defective_block_start = __cpu_to_le48(sector);
915 entry->marked_count = cnt - 1;
916 if (cnt == length)
917 return 1;
918 sector += cnt;
919 length -= cnt;
920 }
921
922 new_bb = ROUND_UP(length, BBM_LOG_MAX_LBA_ENTRY_VAL) /
923 BBM_LOG_MAX_LBA_ENTRY_VAL;
924 if (log->entry_count + new_bb > BBM_LOG_MAX_ENTRIES)
925 return 0;
926
927 while (length > 0) {
928 int cnt = (length <= BBM_LOG_MAX_LBA_ENTRY_VAL) ? length :
929 BBM_LOG_MAX_LBA_ENTRY_VAL;
930 struct bbm_log_entry *entry =
931 &log->marked_block_entries[log->entry_count];
932
933 entry->defective_block_start = __cpu_to_le48(sector);
934 entry->marked_count = cnt - 1;
935 entry->disk_ordinal = idx;
936
937 sector += cnt;
938 length -= cnt;
939
940 log->entry_count++;
941 }
942
943 return new_bb;
944}
c07a5a4f 945
4c9e8c1e
TM		 946/* clear all bad blocks for given disk */
947static void clear_disk_badblocks(struct bbm_log *log, const __u8 idx)
948{
949 __u32 i = 0;
950
951 while (i < log->entry_count) {
952 struct bbm_log_entry *entries = log->marked_block_entries;
953
954 if (entries[i].disk_ordinal == idx) {
955 if (i < log->entry_count - 1)
956 entries[i] = entries[log->entry_count - 1];
957 log->entry_count--;
958 } else {
959 i++;
960 }
961 }
962}
963
c07a5a4f
TM		 964/* clear given bad block */
965static int clear_badblock(struct bbm_log *log, const __u8 idx, const unsigned
966 long long sector, const int length) {
967 __u32 i = 0;
968
969 while (i < log->entry_count) {
970 struct bbm_log_entry *entries = log->marked_block_entries;
971
972 if ((entries[i].disk_ordinal == idx) &&
973 (__le48_to_cpu(&entries[i].defective_block_start) ==
974 sector) && (entries[i].marked_count + 1 == length)) {
975 if (i < log->entry_count - 1)
976 entries[i] = entries[log->entry_count - 1];
977 log->entry_count--;
978 break;
979 }
980 i++;
981 }
982
983 return 1;
984}
8d67477f
TM		 985
986/* allocate and load BBM log from metadata */
987static int load_bbm_log(struct intel_super *super)
988{
989 struct imsm_super *mpb = super->anchor;
990 __u32 bbm_log_size = __le32_to_cpu(mpb->bbm_log_size);
991
992 super->bbm_log = xcalloc(1, sizeof(struct bbm_log));
993 if (!super->bbm_log)
994 return 1;
995
996 if (bbm_log_size) {
997 struct bbm_log *log = (void *)mpb +
998 __le32_to_cpu(mpb->mpb_size) - bbm_log_size;
999
1000 __u32 entry_count;
1001
1002 if (bbm_log_size < sizeof(log->signature) +
1003 sizeof(log->entry_count))
1004 return 2;
1005
1006 entry_count = __le32_to_cpu(log->entry_count);
1007 if ((__le32_to_cpu(log->signature) != BBM_LOG_SIGNATURE) ||
1008 (entry_count > BBM_LOG_MAX_ENTRIES))
1009 return 3;
1010
1011 if (bbm_log_size !=
1012 sizeof(log->signature) + sizeof(log->entry_count) +
1013 entry_count * sizeof(struct bbm_log_entry))
1014 return 4;
1015
1016 memcpy(super->bbm_log, log, bbm_log_size);
1017 } else {
1018 super->bbm_log->signature = __cpu_to_le32(BBM_LOG_SIGNATURE);
1019 super->bbm_log->entry_count = 0;
1020 }
1021
1022 return 0;
1023}
1024
b12796be
TM		 1025/* checks if bad block is within volume boundaries */
1026static int is_bad_block_in_volume(const struct bbm_log_entry *entry,
1027 const unsigned long long start_sector,
1028 const unsigned long long size)
1029{
1030 unsigned long long bb_start;
1031 unsigned long long bb_end;
1032
1033 bb_start = __le48_to_cpu(&entry->defective_block_start);
1034 bb_end = bb_start + (entry->marked_count + 1);
1035
1036 if (((bb_start >= start_sector) && (bb_start < start_sector + size)) ||
1037 ((bb_end >= start_sector) && (bb_end <= start_sector + size)))
1038 return 1;
1039
1040 return 0;
1041}
1042
1043/* get list of bad blocks on a drive for a volume */
1044static void get_volume_badblocks(const struct bbm_log *log, const __u8 idx,
1045 const unsigned long long start_sector,
1046 const unsigned long long size,
1047 struct md_bb *bbs)
1048{
1049 __u32 count = 0;
1050 __u32 i;
1051
1052 for (i = 0; i < log->entry_count; i++) {
1053 const struct bbm_log_entry *ent =
1054 &log->marked_block_entries[i];
1055 struct md_bb_entry *bb;
1056
1057 if ((ent->disk_ordinal == idx) &&
1058 is_bad_block_in_volume(ent, start_sector, size)) {
1059
1060 if (!bbs->entries) {
1061 bbs->entries = xmalloc(BBM_LOG_MAX_ENTRIES *
1062 sizeof(*bb));
1063 if (!bbs->entries)
1064 break;
1065 }
1066
1067 bb = &bbs->entries[count++];
1068 bb->sector = __le48_to_cpu(&ent->defective_block_start);
1069 bb->length = ent->marked_count + 1;
1070 }
1071 }
1072 bbs->count = count;
1073}
1074
98130f40
AK		 1075/*
1076 * for second_map:
238c0a71
AK		 1077 * == MAP_0 get first map
1078 * == MAP_1 get second map
1079 * == MAP_X than get map according to the current migr_state
98130f40
AK		 1080 */
1081static __u32 get_imsm_ord_tbl_ent(struct imsm_dev *dev,
1082 int slot,
1083 int second_map)
7eef0453
DW		 1084{
1085 struct imsm_map *map;
1086
5e7b0330 1087 map = get_imsm_map(dev, second_map);
7eef0453 1088
ff077194
DW		 1089 /* top byte identifies disk under rebuild */
1090 return __le32_to_cpu(map->disk_ord_tbl[slot]);
1091}
1092
1093#define ord_to_idx(ord) (((ord) << 8) >> 8)
98130f40 1094static __u32 get_imsm_disk_idx(struct imsm_dev *dev, int slot, int second_map)
ff077194 1095{
98130f40 1096 __u32 ord = get_imsm_ord_tbl_ent(dev, slot, second_map);
ff077194
DW		 1097
1098 return ord_to_idx(ord);
7eef0453
DW		 1099}
1100
be73972f
DW		 1101static void set_imsm_ord_tbl_ent(struct imsm_map *map, int slot, __u32 ord)
1102{
1103 map->disk_ord_tbl[slot] = __cpu_to_le32(ord);
1104}
1105
f21e18ca 1106static int get_imsm_disk_slot(struct imsm_map *map, unsigned idx)
620b1713
DW		 1107{
1108 int slot;
1109 __u32 ord;
1110
1111 for (slot = 0; slot < map->num_members; slot++) {
1112 ord = __le32_to_cpu(map->disk_ord_tbl[slot]);
1113 if (ord_to_idx(ord) == idx)
1114 return slot;
1115 }
1116
1117 return -1;
1118}
1119
cdddbdbc
DW		 1120static int get_imsm_raid_level(struct imsm_map *map)
1121{
1122 if (map->raid_level == 1) {
1123 if (map->num_members == 2)
1124 return 1;
1125 else
1126 return 10;
1127 }
1128
1129 return map->raid_level;
1130}
1131
c2c087e6
DW		 1132static int cmp_extent(const void *av, const void *bv)
1133{
1134 const struct extent *a = av;
1135 const struct extent *b = bv;
1136 if (a->start < b->start)
1137 return -1;
1138 if (a->start > b->start)
1139 return 1;
1140 return 0;
1141}
1142
0dcecb2e 1143static int count_memberships(struct dl *dl, struct intel_super *super)
c2c087e6 1144{
c2c087e6 1145 int memberships = 0;
620b1713 1146 int i;
c2c087e6 1147
949c47a0
DW		 1148 for (i = 0; i < super->anchor->num_raid_devs; i++) {
1149 struct imsm_dev *dev = get_imsm_dev(super, i);
238c0a71 1150 struct imsm_map *map = get_imsm_map(dev, MAP_0);
c2c087e6 1151
620b1713
DW		 1152 if (get_imsm_disk_slot(map, dl->index) >= 0)
1153 memberships++;
c2c087e6 1154 }
0dcecb2e
DW		 1155
1156 return memberships;
1157}
1158
b81221b7
CA		 1159static __u32 imsm_min_reserved_sectors(struct intel_super *super);
1160
5551b113
CA		 1161static int split_ull(unsigned long long n, __u32 *lo, __u32 *hi)
1162{
1163 if (lo == 0 || hi == 0)
1164 return 1;
1165 *lo = __le32_to_cpu((unsigned)n);
1166 *hi = __le32_to_cpu((unsigned)(n >> 32));
1167 return 0;
1168}
1169
1170static unsigned long long join_u32(__u32 lo, __u32 hi)
1171{
1172 return (unsigned long long)__le32_to_cpu(lo) |
1173 (((unsigned long long)__le32_to_cpu(hi)) << 32);
1174}
1175
1176static unsigned long long total_blocks(struct imsm_disk *disk)
1177{
1178 if (disk == NULL)
1179 return 0;
1180 return join_u32(disk->total_blocks_lo, disk->total_blocks_hi);
1181}
1182
1183static unsigned long long pba_of_lba0(struct imsm_map *map)
1184{
1185 if (map == NULL)
1186 return 0;
1187 return join_u32(map->pba_of_lba0_lo, map->pba_of_lba0_hi);
1188}
1189
1190static unsigned long long blocks_per_member(struct imsm_map *map)
1191{
1192 if (map == NULL)
1193 return 0;
1194 return join_u32(map->blocks_per_member_lo, map->blocks_per_member_hi);
1195}
1196
1197static unsigned long long num_data_stripes(struct imsm_map *map)
1198{
1199 if (map == NULL)
1200 return 0;
1201 return join_u32(map->num_data_stripes_lo, map->num_data_stripes_hi);
1202}
1203
fcc2c9da
MD		 1204static unsigned long long imsm_dev_size(struct imsm_dev *dev)
1205{
1206 if (dev == NULL)
1207 return 0;
1208 return join_u32(dev->size_low, dev->size_high);
1209}
1210
5551b113
CA		 1211static void set_total_blocks(struct imsm_disk *disk, unsigned long long n)
1212{
1213 split_ull(n, &disk->total_blocks_lo, &disk->total_blocks_hi);
1214}
1215
1216static void set_pba_of_lba0(struct imsm_map *map, unsigned long long n)
1217{
1218 split_ull(n, &map->pba_of_lba0_lo, &map->pba_of_lba0_hi);
1219}
1220
1221static void set_blocks_per_member(struct imsm_map *map, unsigned long long n)
1222{
1223 split_ull(n, &map->blocks_per_member_lo, &map->blocks_per_member_hi);
1224}
1225
1226static void set_num_data_stripes(struct imsm_map *map, unsigned long long n)
1227{
1228 split_ull(n, &map->num_data_stripes_lo, &map->num_data_stripes_hi);
1229}
1230
fcc2c9da
MD		 1231static void set_imsm_dev_size(struct imsm_dev *dev, unsigned long long n)
1232{
1233 split_ull(n, &dev->size_low, &dev->size_high);
1234}
1235
44490938
MD		 1236static unsigned long long per_dev_array_size(struct imsm_map *map)
1237{
1238 unsigned long long array_size = 0;
1239
1240 if (map == NULL)
1241 return array_size;
1242
1243 array_size = num_data_stripes(map) * map->blocks_per_strip;
1244 if (get_imsm_raid_level(map) == 1 || get_imsm_raid_level(map) == 10)
1245 array_size *= 2;
1246
1247 return array_size;
1248}
1249
0dcecb2e
DW		 1250static struct extent *get_extents(struct intel_super *super, struct dl *dl)
1251{
1252 /* find a list of used extents on the given physical device */
1253 struct extent *rv, *e;
620b1713 1254 int i;
0dcecb2e 1255 int memberships = count_memberships(dl, super);
b276dd33
DW		 1256 __u32 reservation;
1257
1258 /* trim the reserved area for spares, so they can join any array
1259 * regardless of whether the OROM has assigned sectors from the
1260 * IMSM_RESERVED_SECTORS region
1261 */
1262 if (dl->index == -1)
b81221b7 1263 reservation = imsm_min_reserved_sectors(super);
b276dd33
DW		 1264 else
1265 reservation = MPB_SECTOR_CNT + IMSM_RESERVED_SECTORS;
0dcecb2e 1266
503975b9 1267 rv = xcalloc(sizeof(struct extent), (memberships + 1));
c2c087e6
DW		 1268 e = rv;
1269
949c47a0
DW		 1270 for (i = 0; i < super->anchor->num_raid_devs; i++) {
1271 struct imsm_dev *dev = get_imsm_dev(super, i);
238c0a71 1272 struct imsm_map *map = get_imsm_map(dev, MAP_0);
c2c087e6 1273
620b1713 1274 if (get_imsm_disk_slot(map, dl->index) >= 0) {
5551b113 1275 e->start = pba_of_lba0(map);
44490938 1276 e->size = per_dev_array_size(map);
620b1713 1277 e++;
c2c087e6
DW		 1278 }
1279 }
1280 qsort(rv, memberships, sizeof(*rv), cmp_extent);
1281
1011e834 1282 /* determine the start of the metadata
14e8215b
DW		 1283 * when no raid devices are defined use the default
1284 * ...otherwise allow the metadata to truncate the value
1285 * as is the case with older versions of imsm
1286 */
1287 if (memberships) {
1288 struct extent *last = &rv[memberships - 1];
5551b113 1289 unsigned long long remainder;
14e8215b 1290
5551b113 1291 remainder = total_blocks(&dl->disk) - (last->start + last->size);
dda5855f
DW		 1292 /* round down to 1k block to satisfy precision of the kernel
1293 * 'size' interface
1294 */
1295 remainder &= ~1UL;
1296 /* make sure remainder is still sane */
f21e18ca 1297 if (remainder < (unsigned)ROUND_UP(super->len, 512) >> 9)
dda5855f 1298 remainder = ROUND_UP(super->len, 512) >> 9;
14e8215b
DW		 1299 if (reservation > remainder)
1300 reservation = remainder;
1301 }
5551b113 1302 e->start = total_blocks(&dl->disk) - reservation;
c2c087e6
DW		 1303 e->size = 0;
1304 return rv;
1305}
1306
14e8215b
DW		 1307/* try to determine how much space is reserved for metadata from
1308 * the last get_extents() entry, otherwise fallback to the
1309 * default
1310 */
1311static __u32 imsm_reserved_sectors(struct intel_super *super, struct dl *dl)
1312{
1313 struct extent *e;
1314 int i;
1315 __u32 rv;
1316
1317 /* for spares just return a minimal reservation which will grow
1318 * once the spare is picked up by an array
1319 */
1320 if (dl->index == -1)
1321 return MPB_SECTOR_CNT;
1322
1323 e = get_extents(super, dl);
1324 if (!e)
1325 return MPB_SECTOR_CNT + IMSM_RESERVED_SECTORS;
1326
1327 /* scroll to last entry */
1328 for (i = 0; e[i].size; i++)
1329 continue;
1330
5551b113 1331 rv = total_blocks(&dl->disk) - e[i].start;
14e8215b
DW		 1332
1333 free(e);
1334
1335 return rv;
1336}
1337
25ed7e59
DW		 1338static int is_spare(struct imsm_disk *disk)
1339{
1340 return (disk->status & SPARE_DISK) == SPARE_DISK;
1341}
1342
1343static int is_configured(struct imsm_disk *disk)
1344{
1345 return (disk->status & CONFIGURED_DISK) == CONFIGURED_DISK;
1346}
1347
1348static int is_failed(struct imsm_disk *disk)
1349{
1350 return (disk->status & FAILED_DISK) == FAILED_DISK;
1351}
1352
2432ce9b
AP		 1353static int is_journal(struct imsm_disk *disk)
1354{
1355 return (disk->status & JOURNAL_DISK) == JOURNAL_DISK;
1356}
1357
b53bfba6
TM		 1358/* round array size down to closest MB and ensure it splits evenly
1359 * between members
1360 */
1361static unsigned long long round_size_to_mb(unsigned long long size, unsigned int
1362 disk_count)
1363{
1364 size /= disk_count;
1365 size = (size >> SECT_PER_MB_SHIFT) << SECT_PER_MB_SHIFT;
1366 size *= disk_count;
1367
1368 return size;
1369}
1370
8b9cd157
MK		 1371static int able_to_resync(int raid_level, int missing_disks)
1372{
1373 int max_missing_disks = 0;
1374
1375 switch (raid_level) {
1376 case 10:
1377 max_missing_disks = 1;
1378 break;
1379 default:
1380 max_missing_disks = 0;
1381 }
1382 return missing_disks <= max_missing_disks;
1383}
1384
b81221b7
CA		 1385/* try to determine how much space is reserved for metadata from
1386 * the last get_extents() entry on the smallest active disk,
1387 * otherwise fallback to the default
1388 */
1389static __u32 imsm_min_reserved_sectors(struct intel_super *super)
1390{
1391 struct extent *e;
1392 int i;
5551b113
CA		 1393 unsigned long long min_active;
1394 __u32 remainder;
b81221b7
CA		 1395 __u32 rv = MPB_SECTOR_CNT + IMSM_RESERVED_SECTORS;
1396 struct dl *dl, *dl_min = NULL;
1397
1398 if (!super)
1399 return rv;
1400
1401 min_active = 0;
1402 for (dl = super->disks; dl; dl = dl->next) {
1403 if (dl->index < 0)
1404 continue;
5551b113
CA		 1405 unsigned long long blocks = total_blocks(&dl->disk);
1406 if (blocks < min_active || min_active == 0) {
b81221b7 1407 dl_min = dl;
5551b113 1408 min_active = blocks;
b81221b7
CA		 1409 }
1410 }
1411 if (!dl_min)
1412 return rv;
1413
1414 /* find last lba used by subarrays on the smallest active disk */
1415 e = get_extents(super, dl_min);
1416 if (!e)
1417 return rv;
1418 for (i = 0; e[i].size; i++)
1419 continue;
1420
1421 remainder = min_active - e[i].start;
1422 free(e);
1423
1424 /* to give priority to recovery we should not require full
1425 IMSM_RESERVED_SECTORS from the spare */
1426 rv = MPB_SECTOR_CNT + NUM_BLOCKS_DIRTY_STRIPE_REGION;
1427
1428 /* if real reservation is smaller use that value */
1429 return (remainder < rv) ? remainder : rv;
1430}
1431
fbfdcb06
AO		 1432/*
1433 * Return minimum size of a spare and sector size
1434 * that can be used in this array
1435 */
1436int get_spare_criteria_imsm(struct supertype *st, struct spare_criteria *c)
80e7f8c3
AC		 1437{
1438 struct intel_super *super = st->sb;
1439 struct dl *dl;
1440 struct extent *e;
1441 int i;
fbfdcb06
AO		 1442 unsigned long long size = 0;
1443
1444 c->min_size = 0;
4b57ecf6 1445 c->sector_size = 0;
80e7f8c3
AC		 1446
1447 if (!super)
fbfdcb06 1448 return -EINVAL;
80e7f8c3
AC		 1449 /* find first active disk in array */
1450 dl = super->disks;
1451 while (dl && (is_failed(&dl->disk) || dl->index == -1))
1452 dl = dl->next;
1453 if (!dl)
fbfdcb06 1454 return -EINVAL;
80e7f8c3
AC		 1455 /* find last lba used by subarrays */
1456 e = get_extents(super, dl);
1457 if (!e)
fbfdcb06 1458 return -EINVAL;
80e7f8c3
AC		 1459 for (i = 0; e[i].size; i++)
1460 continue;
1461 if (i > 0)
fbfdcb06 1462 size = e[i-1].start + e[i-1].size;
80e7f8c3 1463 free(e);
b81221b7 1464
80e7f8c3 1465 /* add the amount of space needed for metadata */
fbfdcb06
AO		 1466 size += imsm_min_reserved_sectors(super);
1467
1468 c->min_size = size * 512;
4b57ecf6 1469 c->sector_size = super->sector_size;
b81221b7 1470
fbfdcb06 1471 return 0;
80e7f8c3
AC		 1472}
1473
d1e02575
AK		 1474static int is_gen_migration(struct imsm_dev *dev);
1475
f36a9ecd
PB		 1476#define IMSM_4K_DIV 8
1477
c47b0ff6
AK		 1478static __u64 blocks_per_migr_unit(struct intel_super *super,
1479 struct imsm_dev *dev);
1e5c6983 1480
c47b0ff6
AK		 1481static void print_imsm_dev(struct intel_super *super,
1482 struct imsm_dev *dev,
1483 char *uuid,
1484 int disk_idx)
cdddbdbc
DW		 1485{
1486 __u64 sz;
0d80bb2f 1487 int slot, i;
238c0a71
AK		 1488 struct imsm_map *map = get_imsm_map(dev, MAP_0);
1489 struct imsm_map *map2 = get_imsm_map(dev, MAP_1);
b10b37b8 1490 __u32 ord;
cdddbdbc
DW		 1491
1492 printf("\n");
1e7bc0ed 1493 printf("[%.16s]:\n", dev->volume);
44470971 1494 printf(" UUID : %s\n", uuid);
dd8bcb3b
AK		 1495 printf(" RAID Level : %d", get_imsm_raid_level(map));
1496 if (map2)
1497 printf(" <-- %d", get_imsm_raid_level(map2));
1498 printf("\n");
1499 printf(" Members : %d", map->num_members);
1500 if (map2)
1501 printf(" <-- %d", map2->num_members);
1502 printf("\n");
0d80bb2f
DW		 1503 printf(" Slots : [");
1504 for (i = 0; i < map->num_members; i++) {
238c0a71 1505 ord = get_imsm_ord_tbl_ent(dev, i, MAP_0);
0d80bb2f
DW		 1506 printf("%s", ord & IMSM_ORD_REBUILD ? "_" : "U");
1507 }
dd8bcb3b
AK		 1508 printf("]");
1509 if (map2) {
1510 printf(" <-- [");
1511 for (i = 0; i < map2->num_members; i++) {
238c0a71 1512 ord = get_imsm_ord_tbl_ent(dev, i, MAP_1);
dd8bcb3b
AK		 1513 printf("%s", ord & IMSM_ORD_REBUILD ? "_" : "U");
1514 }
1515 printf("]");
1516 }
1517 printf("\n");
7095bccb
AK		 1518 printf(" Failed disk : ");
1519 if (map->failed_disk_num == 0xff)
1520 printf("none");
1521 else
1522 printf("%i", map->failed_disk_num);
1523 printf("\n");
620b1713
DW		 1524 slot = get_imsm_disk_slot(map, disk_idx);
1525 if (slot >= 0) {
238c0a71 1526 ord = get_imsm_ord_tbl_ent(dev, slot, MAP_X);
b10b37b8
DW		 1527 printf(" This Slot : %d%s\n", slot,
1528 ord & IMSM_ORD_REBUILD ? " (out-of-sync)" : "");
1529 } else
cdddbdbc 1530 printf(" This Slot : ?\n");
84918897 1531 printf(" Sector Size : %u\n", super->sector_size);
fcc2c9da 1532 sz = imsm_dev_size(dev);
84918897
MK		 1533 printf(" Array Size : %llu%s\n",
1534 (unsigned long long)sz * 512 / super->sector_size,
cdddbdbc 1535 human_size(sz * 512));
5551b113 1536 sz = blocks_per_member(map);
84918897
MK		 1537 printf(" Per Dev Size : %llu%s\n",
1538 (unsigned long long)sz * 512 / super->sector_size,
cdddbdbc 1539 human_size(sz * 512));
5551b113
CA		 1540 printf(" Sector Offset : %llu\n",
1541 pba_of_lba0(map));
1542 printf(" Num Stripes : %llu\n",
1543 num_data_stripes(map));
dd8bcb3b 1544 printf(" Chunk Size : %u KiB",
cdddbdbc 1545 __le16_to_cpu(map->blocks_per_strip) / 2);
dd8bcb3b
AK		 1546 if (map2)
1547 printf(" <-- %u KiB",
1548 __le16_to_cpu(map2->blocks_per_strip) / 2);
1549 printf("\n");
cdddbdbc 1550 printf(" Reserved : %d\n", __le32_to_cpu(dev->reserved_blocks));
8655a7b1 1551 printf(" Migrate State : ");
1484e727
DW		 1552 if (dev->vol.migr_state) {
1553 if (migr_type(dev) == MIGR_INIT)
8655a7b1 1554 printf("initialize\n");
1484e727 1555 else if (migr_type(dev) == MIGR_REBUILD)
8655a7b1 1556 printf("rebuild\n");
1484e727 1557 else if (migr_type(dev) == MIGR_VERIFY)
8655a7b1 1558 printf("check\n");
1484e727 1559 else if (migr_type(dev) == MIGR_GEN_MIGR)
8655a7b1 1560 printf("general migration\n");
1484e727 1561 else if (migr_type(dev) == MIGR_STATE_CHANGE)
8655a7b1 1562 printf("state change\n");
1484e727 1563 else if (migr_type(dev) == MIGR_REPAIR)
8655a7b1 1564 printf("repair\n");
1484e727 1565 else
8655a7b1
DW		 1566 printf("<unknown:%d>\n", migr_type(dev));
1567 } else
1568 printf("idle\n");
3393c6af
DW		 1569 printf(" Map State : %s", map_state_str[map->map_state]);
1570 if (dev->vol.migr_state) {
238c0a71 1571 struct imsm_map *map = get_imsm_map(dev, MAP_1);
1e5c6983 1572
b10b37b8 1573 printf(" <-- %s", map_state_str[map->map_state]);
464d40e8
LD		 1574 printf("\n Checkpoint : %u ",
1575 __le32_to_cpu(dev->vol.curr_migr_unit));
089f9d79 1576 if (is_gen_migration(dev) && (slot > 1 || slot < 0))
464d40e8
LD		 1577 printf("(N/A)");
1578 else
1579 printf("(%llu)", (unsigned long long)
1580 blocks_per_migr_unit(super, dev));
3393c6af
DW		 1581 }
1582 printf("\n");
2432ce9b
AP		 1583 printf(" Dirty State : %s\n", (dev->vol.dirty & RAIDVOL_DIRTY) ?
1584 "dirty" : "clean");
1585 printf(" RWH Policy : ");
c2462068 1586 if (dev->rwh_policy == RWH_OFF || dev->rwh_policy == RWH_MULTIPLE_OFF)
2432ce9b
AP		 1587 printf("off\n");
1588 else if (dev->rwh_policy == RWH_DISTRIBUTED)
1589 printf("PPL distributed\n");
1590 else if (dev->rwh_policy == RWH_JOURNALING_DRIVE)
1591 printf("PPL journaling drive\n");
c2462068
PB		 1592 else if (dev->rwh_policy == RWH_MULTIPLE_DISTRIBUTED)
1593 printf("Multiple distributed PPLs\n");
1594 else if (dev->rwh_policy == RWH_MULTIPLE_PPLS_JOURNALING_DRIVE)
1595 printf("Multiple PPLs on journaling drive\n");
2432ce9b
AP		 1596 else
1597 printf("<unknown:%d>\n", dev->rwh_policy);
cdddbdbc
DW		 1598}
1599
ef5c214e
MK		 1600static void print_imsm_disk(struct imsm_disk *disk,
1601 int index,
1602 __u32 reserved,
1603 unsigned int sector_size) {
1f24f035 1604 char str[MAX_RAID_SERIAL_LEN + 1];
cdddbdbc
DW		 1605 __u64 sz;
1606
0ec1f4e8 1607 if (index < -1 || !disk)
e9d82038
DW		 1608 return;
1609
cdddbdbc 1610 printf("\n");
1f24f035 1611 snprintf(str, MAX_RAID_SERIAL_LEN + 1, "%s", disk->serial);
0ec1f4e8
DW		 1612 if (index >= 0)
1613 printf(" Disk%02d Serial : %s\n", index, str);
1614 else
1615 printf(" Disk Serial : %s\n", str);
2432ce9b
AP		 1616 printf(" State :%s%s%s%s\n", is_spare(disk) ? " spare" : "",
1617 is_configured(disk) ? " active" : "",
1618 is_failed(disk) ? " failed" : "",
1619 is_journal(disk) ? " journal" : "");
cdddbdbc 1620 printf(" Id : %08x\n", __le32_to_cpu(disk->scsi_id));
5551b113 1621 sz = total_blocks(disk) - reserved;
ef5c214e
MK		 1622 printf(" Usable Size : %llu%s\n",
1623 (unsigned long long)sz * 512 / sector_size,
cdddbdbc
DW		 1624 human_size(sz * 512));
1625}
1626
de44e46f
PB		 1627void convert_to_4k_imsm_migr_rec(struct intel_super *super)
1628{
1629 struct migr_record *migr_rec = super->migr_rec;
1630
1631 migr_rec->blocks_per_unit /= IMSM_4K_DIV;
1632 migr_rec->ckpt_area_pba /= IMSM_4K_DIV;
1633 migr_rec->dest_1st_member_lba /= IMSM_4K_DIV;
1634 migr_rec->dest_depth_per_unit /= IMSM_4K_DIV;
1635 split_ull((join_u32(migr_rec->post_migr_vol_cap,
1636 migr_rec->post_migr_vol_cap_hi) / IMSM_4K_DIV),
1637 &migr_rec->post_migr_vol_cap, &migr_rec->post_migr_vol_cap_hi);
1638}
1639
f36a9ecd
PB		 1640void convert_to_4k_imsm_disk(struct imsm_disk *disk)
1641{
1642 set_total_blocks(disk, (total_blocks(disk)/IMSM_4K_DIV));
1643}
1644
1645void convert_to_4k(struct intel_super *super)
1646{
1647 struct imsm_super *mpb = super->anchor;
1648 struct imsm_disk *disk;
1649 int i;
e4467bc7 1650 __u32 bbm_log_size = __le32_to_cpu(mpb->bbm_log_size);
f36a9ecd
PB		 1651
1652 for (i = 0; i < mpb->num_disks ; i++) {
1653 disk = __get_imsm_disk(mpb, i);
1654 /* disk */
1655 convert_to_4k_imsm_disk(disk);
1656 }
1657 for (i = 0; i < mpb->num_raid_devs; i++) {
1658 struct imsm_dev *dev = __get_imsm_dev(mpb, i);
1659 struct imsm_map *map = get_imsm_map(dev, MAP_0);
1660 /* dev */
fcc2c9da 1661 set_imsm_dev_size(dev, imsm_dev_size(dev)/IMSM_4K_DIV);
f36a9ecd
PB		 1662 dev->vol.curr_migr_unit /= IMSM_4K_DIV;
1663
1664 /* map0 */
1665 set_blocks_per_member(map, blocks_per_member(map)/IMSM_4K_DIV);
1666 map->blocks_per_strip /= IMSM_4K_DIV;
1667 set_pba_of_lba0(map, pba_of_lba0(map)/IMSM_4K_DIV);
1668
1669 if (dev->vol.migr_state) {
1670 /* map1 */
1671 map = get_imsm_map(dev, MAP_1);
1672 set_blocks_per_member(map,
1673 blocks_per_member(map)/IMSM_4K_DIV);
1674 map->blocks_per_strip /= IMSM_4K_DIV;
1675 set_pba_of_lba0(map, pba_of_lba0(map)/IMSM_4K_DIV);
1676 }
1677 }
e4467bc7
TM		 1678 if (bbm_log_size) {
1679 struct bbm_log *log = (void *)mpb +
1680 __le32_to_cpu(mpb->mpb_size) - bbm_log_size;
1681 __u32 i;
1682
1683 for (i = 0; i < log->entry_count; i++) {
1684 struct bbm_log_entry *entry =
1685 &log->marked_block_entries[i];
1686
1687 __u8 count = entry->marked_count + 1;
1688 unsigned long long sector =
1689 __le48_to_cpu(&entry->defective_block_start);
1690
1691 entry->defective_block_start =
1692 __cpu_to_le48(sector/IMSM_4K_DIV);
1693 entry->marked_count = max(count/IMSM_4K_DIV, 1) - 1;
1694 }
1695 }
f36a9ecd
PB		 1696
1697 mpb->check_sum = __gen_imsm_checksum(mpb);
1698}
1699
520e69e2
AK		 1700void examine_migr_rec_imsm(struct intel_super *super)
1701{
1702 struct migr_record *migr_rec = super->migr_rec;
1703 struct imsm_super *mpb = super->anchor;
1704 int i;
1705
1706 for (i = 0; i < mpb->num_raid_devs; i++) {
1707 struct imsm_dev *dev = __get_imsm_dev(mpb, i);
3136abe5 1708 struct imsm_map *map;
b4ab44d8 1709 int slot = -1;
3136abe5 1710
520e69e2
AK		 1711 if (is_gen_migration(dev) == 0)
1712 continue;
1713
1714 printf("\nMigration Record Information:");
3136abe5 1715
44bfe6df
AK		 1716 /* first map under migration */
1717 map = get_imsm_map(dev, MAP_0);
3136abe5
AK		 1718 if (map)
1719 slot = get_imsm_disk_slot(map, super->disks->index);
089f9d79 1720 if (map == NULL || slot > 1 || slot < 0) {
520e69e2
AK		 1721 printf(" Empty\n ");
1722 printf("Examine one of first two disks in array\n");
1723 break;
1724 }
1725 printf("\n Status : ");
1726 if (__le32_to_cpu(migr_rec->rec_status) == UNIT_SRC_NORMAL)
1727 printf("Normal\n");
1728 else
1729 printf("Contains Data\n");
1730 printf(" Current Unit : %u\n",
1731 __le32_to_cpu(migr_rec->curr_migr_unit));
1732 printf(" Family : %u\n",
1733 __le32_to_cpu(migr_rec->family_num));
1734 printf(" Ascending : %u\n",
1735 __le32_to_cpu(migr_rec->ascending_migr));
1736 printf(" Blocks Per Unit : %u\n",
1737 __le32_to_cpu(migr_rec->blocks_per_unit));
1738 printf(" Dest. Depth Per Unit : %u\n",
1739 __le32_to_cpu(migr_rec->dest_depth_per_unit));
1740 printf(" Checkpoint Area pba : %u\n",
1741 __le32_to_cpu(migr_rec->ckpt_area_pba));
1742 printf(" First member lba : %u\n",
1743 __le32_to_cpu(migr_rec->dest_1st_member_lba));
1744 printf(" Total Number of Units : %u\n",
1745 __le32_to_cpu(migr_rec->num_migr_units));
1746 printf(" Size of volume : %u\n",
1747 __le32_to_cpu(migr_rec->post_migr_vol_cap));
1748 printf(" Expansion space for LBA64 : %u\n",
1749 __le32_to_cpu(migr_rec->post_migr_vol_cap_hi));
1750 printf(" Record was read from : %u\n",
1751 __le32_to_cpu(migr_rec->ckpt_read_disk_num));
1752
1753 break;
1754 }
1755}
f36a9ecd 1756
de44e46f
PB		 1757void convert_from_4k_imsm_migr_rec(struct intel_super *super)
1758{
1759 struct migr_record *migr_rec = super->migr_rec;
1760
1761 migr_rec->blocks_per_unit *= IMSM_4K_DIV;
1762 migr_rec->ckpt_area_pba *= IMSM_4K_DIV;
1763 migr_rec->dest_1st_member_lba *= IMSM_4K_DIV;
1764 migr_rec->dest_depth_per_unit *= IMSM_4K_DIV;
1765 split_ull((join_u32(migr_rec->post_migr_vol_cap,
1766 migr_rec->post_migr_vol_cap_hi) * IMSM_4K_DIV),
1767 &migr_rec->post_migr_vol_cap,
1768 &migr_rec->post_migr_vol_cap_hi);
1769}
1770
f36a9ecd
PB		 1771void convert_from_4k(struct intel_super *super)
1772{
1773 struct imsm_super *mpb = super->anchor;
1774 struct imsm_disk *disk;
1775 int i;
e4467bc7 1776 __u32 bbm_log_size = __le32_to_cpu(mpb->bbm_log_size);
f36a9ecd
PB		 1777
1778 for (i = 0; i < mpb->num_disks ; i++) {
1779 disk = __get_imsm_disk(mpb, i);
1780 /* disk */
1781 set_total_blocks(disk, (total_blocks(disk)*IMSM_4K_DIV));
1782 }
1783
1784 for (i = 0; i < mpb->num_raid_devs; i++) {
1785 struct imsm_dev *dev = __get_imsm_dev(mpb, i);
1786 struct imsm_map *map = get_imsm_map(dev, MAP_0);
1787 /* dev */
fcc2c9da 1788 set_imsm_dev_size(dev, imsm_dev_size(dev)*IMSM_4K_DIV);
f36a9ecd
PB		 1789 dev->vol.curr_migr_unit *= IMSM_4K_DIV;
1790
1791 /* map0 */
1792 set_blocks_per_member(map, blocks_per_member(map)*IMSM_4K_DIV);
1793 map->blocks_per_strip *= IMSM_4K_DIV;
1794 set_pba_of_lba0(map, pba_of_lba0(map)*IMSM_4K_DIV);
1795
1796 if (dev->vol.migr_state) {
1797 /* map1 */
1798 map = get_imsm_map(dev, MAP_1);
1799 set_blocks_per_member(map,
1800 blocks_per_member(map)*IMSM_4K_DIV);
1801 map->blocks_per_strip *= IMSM_4K_DIV;
1802 set_pba_of_lba0(map, pba_of_lba0(map)*IMSM_4K_DIV);
1803 }
1804 }
e4467bc7
TM		 1805 if (bbm_log_size) {
1806 struct bbm_log *log = (void *)mpb +
1807 __le32_to_cpu(mpb->mpb_size) - bbm_log_size;
1808 __u32 i;
1809
1810 for (i = 0; i < log->entry_count; i++) {
1811 struct bbm_log_entry *entry =
1812 &log->marked_block_entries[i];
1813
1814 __u8 count = entry->marked_count + 1;
1815 unsigned long long sector =
1816 __le48_to_cpu(&entry->defective_block_start);
1817
1818 entry->defective_block_start =
1819 __cpu_to_le48(sector*IMSM_4K_DIV);
1820 entry->marked_count = count*IMSM_4K_DIV - 1;
1821 }
1822 }
f36a9ecd
PB		 1823
1824 mpb->check_sum = __gen_imsm_checksum(mpb);
1825}
1826
19482bcc
AK		 1827/*******************************************************************************
1828 * function: imsm_check_attributes
1829 * Description: Function checks if features represented by attributes flags
1011e834 1830 * are supported by mdadm.
19482bcc
AK		 1831 * Parameters:
1832 * attributes - Attributes read from metadata
1833 * Returns:
1011e834
N		 1834 * 0 - passed attributes contains unsupported features flags
1835 * 1 - all features are supported
19482bcc
AK		 1836 ******************************************************************************/
1837static int imsm_check_attributes(__u32 attributes)
1838{
1839 int ret_val = 1;
418f9b36
N		 1840 __u32 not_supported = MPB_ATTRIB_SUPPORTED^0xffffffff;
1841
1842 not_supported &= ~MPB_ATTRIB_IGNORED;
19482bcc
AK		 1843
1844 not_supported &= attributes;
1845 if (not_supported) {
e7b84f9d 1846 pr_err("(IMSM): Unsupported attributes : %x\n",
418f9b36 1847 (unsigned)__le32_to_cpu(not_supported));
19482bcc
AK		 1848 if (not_supported & MPB_ATTRIB_CHECKSUM_VERIFY) {
1849 dprintf("\t\tMPB_ATTRIB_CHECKSUM_VERIFY \n");
1850 not_supported ^= MPB_ATTRIB_CHECKSUM_VERIFY;
1851 }
1852 if (not_supported & MPB_ATTRIB_2TB) {
1853 dprintf("\t\tMPB_ATTRIB_2TB\n");
1854 not_supported ^= MPB_ATTRIB_2TB;
1855 }
1856 if (not_supported & MPB_ATTRIB_RAID0) {
1857 dprintf("\t\tMPB_ATTRIB_RAID0\n");
1858 not_supported ^= MPB_ATTRIB_RAID0;
1859 }
1860 if (not_supported & MPB_ATTRIB_RAID1) {
1861 dprintf("\t\tMPB_ATTRIB_RAID1\n");
1862 not_supported ^= MPB_ATTRIB_RAID1;
1863 }
1864 if (not_supported & MPB_ATTRIB_RAID10) {
1865 dprintf("\t\tMPB_ATTRIB_RAID10\n");
1866 not_supported ^= MPB_ATTRIB_RAID10;
1867 }
1868 if (not_supported & MPB_ATTRIB_RAID1E) {
1869 dprintf("\t\tMPB_ATTRIB_RAID1E\n");
1870 not_supported ^= MPB_ATTRIB_RAID1E;
1871 }
1872 if (not_supported & MPB_ATTRIB_RAID5) {
1873 dprintf("\t\tMPB_ATTRIB_RAID5\n");
1874 not_supported ^= MPB_ATTRIB_RAID5;
1875 }
1876 if (not_supported & MPB_ATTRIB_RAIDCNG) {
1877 dprintf("\t\tMPB_ATTRIB_RAIDCNG\n");
1878 not_supported ^= MPB_ATTRIB_RAIDCNG;
1879 }
1880 if (not_supported & MPB_ATTRIB_BBM) {
1881 dprintf("\t\tMPB_ATTRIB_BBM\n");
1882 not_supported ^= MPB_ATTRIB_BBM;
1883 }
1884 if (not_supported & MPB_ATTRIB_CHECKSUM_VERIFY) {
1885 dprintf("\t\tMPB_ATTRIB_CHECKSUM_VERIFY (== MPB_ATTRIB_LEGACY)\n");
1886 not_supported ^= MPB_ATTRIB_CHECKSUM_VERIFY;
1887 }
1888 if (not_supported & MPB_ATTRIB_EXP_STRIPE_SIZE) {
1889 dprintf("\t\tMPB_ATTRIB_EXP_STRIP_SIZE\n");
1890 not_supported ^= MPB_ATTRIB_EXP_STRIPE_SIZE;
1891 }
1892 if (not_supported & MPB_ATTRIB_2TB_DISK) {
1893 dprintf("\t\tMPB_ATTRIB_2TB_DISK\n");
1894 not_supported ^= MPB_ATTRIB_2TB_DISK;
1895 }
1896 if (not_supported & MPB_ATTRIB_NEVER_USE2) {
1897 dprintf("\t\tMPB_ATTRIB_NEVER_USE2\n");
1898 not_supported ^= MPB_ATTRIB_NEVER_USE2;
1899 }
1900 if (not_supported & MPB_ATTRIB_NEVER_USE) {
1901 dprintf("\t\tMPB_ATTRIB_NEVER_USE\n");
1902 not_supported ^= MPB_ATTRIB_NEVER_USE;
1903 }
1904
1905 if (not_supported)
1ade5cc1 1906 dprintf("(IMSM): Unknown attributes : %x\n", not_supported);
19482bcc
AK		 1907
1908 ret_val = 0;
1909 }
1910
1911 return ret_val;
1912}
1913
a5d85af7 1914static void getinfo_super_imsm(struct supertype *st, struct mdinfo *info, char *map);
44470971 1915
cdddbdbc
DW		 1916static void examine_super_imsm(struct supertype *st, char *homehost)
1917{
1918 struct intel_super *super = st->sb;
949c47a0 1919 struct imsm_super *mpb = super->anchor;
cdddbdbc
DW		 1920 char str[MAX_SIGNATURE_LENGTH];
1921 int i;
27fd6274
DW		 1922 struct mdinfo info;
1923 char nbuf[64];
cdddbdbc 1924 __u32 sum;
14e8215b 1925 __u32 reserved = imsm_reserved_sectors(super, super->disks);
94827db3 1926 struct dl *dl;
27fd6274 1927
618f4e6d
XN		 1928 strncpy(str, (char *)mpb->sig, MPB_SIG_LEN);
1929 str[MPB_SIG_LEN-1] = '\0';
cdddbdbc
DW		 1930 printf(" Magic : %s\n", str);
1931 snprintf(str, strlen(MPB_VERSION_RAID0), "%s", get_imsm_version(mpb));
1932 printf(" Version : %s\n", get_imsm_version(mpb));
148acb7b 1933 printf(" Orig Family : %08x\n", __le32_to_cpu(mpb->orig_family_num));
cdddbdbc
DW		 1934 printf(" Family : %08x\n", __le32_to_cpu(mpb->family_num));
1935 printf(" Generation : %08x\n", __le32_to_cpu(mpb->generation_num));
19482bcc
AK		 1936 printf(" Attributes : ");
1937 if (imsm_check_attributes(mpb->attributes))
1938 printf("All supported\n");
1939 else
1940 printf("not supported\n");
a5d85af7 1941 getinfo_super_imsm(st, &info, NULL);
ae2bfd4e 1942 fname_from_uuid(st, &info, nbuf, ':');
27fd6274 1943 printf(" UUID : %s\n", nbuf + 5);
cdddbdbc
DW		 1944 sum = __le32_to_cpu(mpb->check_sum);
1945 printf(" Checksum : %08x %s\n", sum,
949c47a0 1946 __gen_imsm_checksum(mpb) == sum ? "correct" : "incorrect");
f36a9ecd 1947 printf(" MPB Sectors : %d\n", mpb_sectors(mpb, super->sector_size));
cdddbdbc
DW		 1948 printf(" Disks : %d\n", mpb->num_disks);
1949 printf(" RAID Devices : %d\n", mpb->num_raid_devs);
ef5c214e
MK		 1950 print_imsm_disk(__get_imsm_disk(mpb, super->disks->index),
1951 super->disks->index, reserved, super->sector_size);
8d67477f 1952 if (get_imsm_bbm_log_size(super->bbm_log)) {
604b746f
JD		 1953 struct bbm_log *log = super->bbm_log;
1954
1955 printf("\n");
1956 printf("Bad Block Management Log:\n");
1957 printf(" Log Size : %d\n", __le32_to_cpu(mpb->bbm_log_size));
1958 printf(" Signature : %x\n", __le32_to_cpu(log->signature));
1959 printf(" Entry Count : %d\n", __le32_to_cpu(log->entry_count));
604b746f 1960 }
44470971
DW		 1961 for (i = 0; i < mpb->num_raid_devs; i++) {
1962 struct mdinfo info;
1963 struct imsm_dev *dev = __get_imsm_dev(mpb, i);
1964
1965 super->current_vol = i;
a5d85af7 1966 getinfo_super_imsm(st, &info, NULL);
ae2bfd4e 1967 fname_from_uuid(st, &info, nbuf, ':');
c47b0ff6 1968 print_imsm_dev(super, dev, nbuf + 5, super->disks->index);
44470971 1969 }
cdddbdbc
DW		 1970 for (i = 0; i < mpb->num_disks; i++) {
1971 if (i == super->disks->index)
1972 continue;
ef5c214e
MK		 1973 print_imsm_disk(__get_imsm_disk(mpb, i), i, reserved,
1974 super->sector_size);
cdddbdbc 1975 }
94827db3 1976
0ec1f4e8
DW		 1977 for (dl = super->disks; dl; dl = dl->next)
1978 if (dl->index == -1)
ef5c214e
MK		 1979 print_imsm_disk(&dl->disk, -1, reserved,
1980 super->sector_size);
520e69e2
AK		 1981
1982 examine_migr_rec_imsm(super);
cdddbdbc
DW		 1983}
1984
061f2c6a 1985static void brief_examine_super_imsm(struct supertype *st, int verbose)
cdddbdbc 1986{
27fd6274 1987 /* We just write a generic IMSM ARRAY entry */
ff54de6e
N		 1988 struct mdinfo info;
1989 char nbuf[64];
1e7bc0ed 1990 struct intel_super *super = st->sb;
1e7bc0ed 1991
0d5a423f
DW		 1992 if (!super->anchor->num_raid_devs) {
1993 printf("ARRAY metadata=imsm\n");
1e7bc0ed 1994 return;
0d5a423f 1995 }
ff54de6e 1996
a5d85af7 1997 getinfo_super_imsm(st, &info, NULL);
4737ae25
N		 1998 fname_from_uuid(st, &info, nbuf, ':');
1999 printf("ARRAY metadata=imsm UUID=%s\n", nbuf + 5);
2000}
2001
2002static void brief_examine_subarrays_imsm(struct supertype *st, int verbose)
2003{
2004 /* We just write a generic IMSM ARRAY entry */
2005 struct mdinfo info;
2006 char nbuf[64];
2007 char nbuf1[64];
2008 struct intel_super *super = st->sb;
2009 int i;
2010
2011 if (!super->anchor->num_raid_devs)
2012 return;
2013
a5d85af7 2014 getinfo_super_imsm(st, &info, NULL);
ae2bfd4e 2015 fname_from_uuid(st, &info, nbuf, ':');
1e7bc0ed
DW		 2016 for (i = 0; i < super->anchor->num_raid_devs; i++) {
2017 struct imsm_dev *dev = get_imsm_dev(super, i);
2018
2019 super->current_vol = i;
a5d85af7 2020 getinfo_super_imsm(st, &info, NULL);
ae2bfd4e 2021 fname_from_uuid(st, &info, nbuf1, ':');
1124b3cf 2022 printf("ARRAY /dev/md/%.16s container=%s member=%d UUID=%s\n",
cf8de691 2023 dev->volume, nbuf + 5, i, nbuf1 + 5);
1e7bc0ed 2024 }
cdddbdbc
DW		 2025}
2026
9d84c8ea
DW		 2027static void export_examine_super_imsm(struct supertype *st)
2028{
2029 struct intel_super *super = st->sb;
2030 struct imsm_super *mpb = super->anchor;
2031 struct mdinfo info;
2032 char nbuf[64];
2033
a5d85af7 2034 getinfo_super_imsm(st, &info, NULL);
9d84c8ea
DW		 2035 fname_from_uuid(st, &info, nbuf, ':');
2036 printf("MD_METADATA=imsm\n");
2037 printf("MD_LEVEL=container\n");
2038 printf("MD_UUID=%s\n", nbuf+5);
2039 printf("MD_DEVICES=%u\n", mpb->num_disks);
2040}
2041
74db60b0
N		 2042static int copy_metadata_imsm(struct supertype *st, int from, int to)
2043{
f36a9ecd 2044 /* The second last sector of the device contains
74db60b0
N		 2045 * the "struct imsm_super" metadata.
2046 * This contains mpb_size which is the size in bytes of the
2047 * extended metadata. This is located immediately before
2048 * the imsm_super.
2049 * We want to read all that, plus the last sector which
2050 * may contain a migration record, and write it all
2051 * to the target.
2052 */
2053 void *buf;
2054 unsigned long long dsize, offset;
2055 int sectors;
2056 struct imsm_super *sb;
f36a9ecd
PB		 2057 struct intel_super *super = st->sb;
2058 unsigned int sector_size = super->sector_size;
2059 unsigned int written = 0;
74db60b0 2060
de44e46f 2061 if (posix_memalign(&buf, MAX_SECTOR_SIZE, MAX_SECTOR_SIZE) != 0)
74db60b0
N		 2062 return 1;
2063
2064 if (!get_dev_size(from, NULL, &dsize))
2065 goto err;
2066
f36a9ecd 2067 if (lseek64(from, dsize-(2*sector_size), 0) < 0)
74db60b0 2068 goto err;
466070ad 2069 if ((unsigned int)read(from, buf, sector_size) != sector_size)
74db60b0
N		 2070 goto err;
2071 sb = buf;
2072 if (strncmp((char*)sb->sig, MPB_SIGNATURE, MPB_SIG_LEN) != 0)
2073 goto err;
2074
f36a9ecd
PB		 2075 sectors = mpb_sectors(sb, sector_size) + 2;
2076 offset = dsize - sectors * sector_size;
74db60b0
N		 2077 if (lseek64(from, offset, 0) < 0 ||
2078 lseek64(to, offset, 0) < 0)
2079 goto err;
f36a9ecd
PB		 2080 while (written < sectors * sector_size) {
2081 int n = sectors*sector_size - written;
74db60b0
N		 2082 if (n > 4096)
2083 n = 4096;
2084 if (read(from, buf, n) != n)
2085 goto err;
2086 if (write(to, buf, n) != n)
2087 goto err;
2088 written += n;
2089 }
2090 free(buf);
2091 return 0;
2092err:
2093 free(buf);
2094 return 1;
2095}
2096
cdddbdbc
DW		 2097static void detail_super_imsm(struct supertype *st, char *homehost)
2098{
3ebe00a1
DW		 2099 struct mdinfo info;
2100 char nbuf[64];
2101
a5d85af7 2102 getinfo_super_imsm(st, &info, NULL);
ae2bfd4e 2103 fname_from_uuid(st, &info, nbuf, ':');
65884368 2104 printf("\n UUID : %s\n", nbuf + 5);
cdddbdbc
DW		 2105}
2106
2107static void brief_detail_super_imsm(struct supertype *st)
2108{
ff54de6e
N		 2109 struct mdinfo info;
2110 char nbuf[64];
a5d85af7 2111 getinfo_super_imsm(st, &info, NULL);
ae2bfd4e 2112 fname_from_uuid(st, &info, nbuf, ':');
ff54de6e 2113 printf(" UUID=%s", nbuf + 5);
cdddbdbc 2114}
d665cc31
DW		 2115
2116static int imsm_read_serial(int fd, char *devname, __u8 *serial);
2117static void fd2devname(int fd, char *name);
2118
120dc887 2119static int ahci_enumerate_ports(const char *hba_path, int port_count, int host_base, int verbose)
d665cc31 2120{
120dc887
LM		 2121 /* dump an unsorted list of devices attached to AHCI Intel storage
2122 * controller, as well as non-connected ports
d665cc31
DW		 2123 */
2124 int hba_len = strlen(hba_path) + 1;
2125 struct dirent *ent;
2126 DIR *dir;
2127 char *path = NULL;
2128 int err = 0;
2129 unsigned long port_mask = (1 << port_count) - 1;
2130
f21e18ca 2131 if (port_count > (int)sizeof(port_mask) * 8) {
ba728be7 2132 if (verbose > 0)
e7b84f9d 2133 pr_err("port_count %d out of range\n", port_count);
d665cc31
DW		 2134 return 2;
2135 }
2136
2137 /* scroll through /sys/dev/block looking for devices attached to
2138 * this hba
2139 */
2140 dir = opendir("/sys/dev/block");
1a6dd6b9
PB		 2141 if (!dir)
2142 return 1;
2143
2144 for (ent = readdir(dir); ent; ent = readdir(dir)) {
d665cc31
DW		 2145 int fd;
2146 char model[64];
2147 char vendor[64];
2148 char buf[1024];
2149 int major, minor;
2150 char *device;
2151 char *c;
2152 int port;
2153 int type;
2154
2155 if (sscanf(ent->d_name, "%d:%d", &major, &minor) != 2)
2156 continue;
2157 path = devt_to_devpath(makedev(major, minor));
2158 if (!path)
2159 continue;
2160 if (!path_attached_to_hba(path, hba_path)) {
2161 free(path);
2162 path = NULL;
2163 continue;
2164 }
2165
2166 /* retrieve the scsi device type */
2167 if (asprintf(&device, "/sys/dev/block/%d:%d/device/xxxxxxx", major, minor) < 0) {
ba728be7 2168 if (verbose > 0)
e7b84f9d 2169 pr_err("failed to allocate 'device'\n");
d665cc31
DW		 2170 err = 2;
2171 break;
2172 }
2173 sprintf(device, "/sys/dev/block/%d:%d/device/type", major, minor);
193b6c0b 2174 if (load_sys(device, buf, sizeof(buf)) != 0) {
ba728be7 2175 if (verbose > 0)
e7b84f9d 2176 pr_err("failed to read device type for %s\n",
d665cc31
DW		 2177 path);
2178 err = 2;
2179 free(device);
2180 break;
2181 }
2182 type = strtoul(buf, NULL, 10);
2183
2184 /* if it's not a disk print the vendor and model */
2185 if (!(type == 0 || type == 7 || type == 14)) {
2186 vendor[0] = '\0';
2187 model[0] = '\0';
2188 sprintf(device, "/sys/dev/block/%d:%d/device/vendor", major, minor);
193b6c0b 2189 if (load_sys(device, buf, sizeof(buf)) == 0) {
d665cc31
DW		 2190 strncpy(vendor, buf, sizeof(vendor));
2191 vendor[sizeof(vendor) - 1] = '\0';
2192 c = (char *) &vendor[sizeof(vendor) - 1];
2193 while (isspace(*c) || *c == '\0')
2194 *c-- = '\0';
2195
2196 }
2197 sprintf(device, "/sys/dev/block/%d:%d/device/model", major, minor);
193b6c0b 2198 if (load_sys(device, buf, sizeof(buf)) == 0) {
d665cc31
DW		 2199 strncpy(model, buf, sizeof(model));
2200 model[sizeof(model) - 1] = '\0';
2201 c = (char *) &model[sizeof(model) - 1];
2202 while (isspace(*c) || *c == '\0')
2203 *c-- = '\0';
2204 }
2205
2206 if (vendor[0] && model[0])
2207 sprintf(buf, "%.64s %.64s", vendor, model);
2208 else
2209 switch (type) { /* numbers from hald/linux/device.c */
2210 case 1: sprintf(buf, "tape"); break;
2211 case 2: sprintf(buf, "printer"); break;
2212 case 3: sprintf(buf, "processor"); break;
2213 case 4:
2214 case 5: sprintf(buf, "cdrom"); break;
2215 case 6: sprintf(buf, "scanner"); break;
2216 case 8: sprintf(buf, "media_changer"); break;
2217 case 9: sprintf(buf, "comm"); break;
2218 case 12: sprintf(buf, "raid"); break;
2219 default: sprintf(buf, "unknown");
2220 }
2221 } else
2222 buf[0] = '\0';
2223 free(device);
2224
2225 /* chop device path to 'host%d' and calculate the port number */
2226 c = strchr(&path[hba_len], '/');
4e5e717d 2227 if (!c) {
ba728be7 2228 if (verbose > 0)
e7b84f9d 2229 pr_err("%s - invalid path name\n", path + hba_len);
4e5e717d
AW		 2230 err = 2;
2231 break;
2232 }
d665cc31 2233 *c = '\0';
0858eccf
AP		 2234 if ((sscanf(&path[hba_len], "ata%d", &port) == 1) ||
2235 ((sscanf(&path[hba_len], "host%d", &port) == 1)))
d665cc31
DW		 2236 port -= host_base;
2237 else {
ba728be7 2238 if (verbose > 0) {
d665cc31 2239 *c = '/'; /* repair the full string */
e7b84f9d 2240 pr_err("failed to determine port number for %s\n",
d665cc31
DW		 2241 path);
2242 }
2243 err = 2;
2244 break;
2245 }
2246
2247 /* mark this port as used */
2248 port_mask &= ~(1 << port);
2249
2250 /* print out the device information */
2251 if (buf[0]) {
2252 printf(" Port%d : - non-disk device (%s) -\n", port, buf);
2253 continue;
2254 }
2255
2256 fd = dev_open(ent->d_name, O_RDONLY);
2257 if (fd < 0)
2258 printf(" Port%d : - disk info unavailable -\n", port);
2259 else {
2260 fd2devname(fd, buf);
2261 printf(" Port%d : %s", port, buf);
2262 if (imsm_read_serial(fd, NULL, (__u8 *) buf) == 0)
664d5325 2263 printf(" (%.*s)\n", MAX_RAID_SERIAL_LEN, buf);
d665cc31 2264 else
664d5325 2265 printf(" ()\n");
4dab422a 2266 close(fd);
d665cc31 2267 }
d665cc31
DW		 2268 free(path);
2269 path = NULL;
2270 }
2271 if (path)
2272 free(path);
2273 if (dir)
2274 closedir(dir);
2275 if (err == 0) {
2276 int i;
2277
2278 for (i = 0; i < port_count; i++)
2279 if (port_mask & (1 << i))
2280 printf(" Port%d : - no device attached -\n", i);
2281 }
2282
2283 return err;
2284}
2285
b5eece69 2286static int print_vmd_attached_devs(struct sys_dev *hba)
60f0f54d
PB		 2287{
2288 struct dirent *ent;
2289 DIR *dir;
2290 char path[292];
2291 char link[256];
2292 char *c, *rp;
2293
2294 if (hba->type != SYS_DEV_VMD)
b5eece69 2295 return 1;
60f0f54d
PB		 2296
2297 /* scroll through /sys/dev/block looking for devices attached to
2298 * this hba
2299 */
2300 dir = opendir("/sys/bus/pci/drivers/nvme");
b9135011 2301 if (!dir)
b5eece69 2302 return 1;
b9135011
JS		 2303
2304 for (ent = readdir(dir); ent; ent = readdir(dir)) {
60f0f54d
PB		 2305 int n;
2306
2307 /* is 'ent' a device? check that the 'subsystem' link exists and
2308 * that its target matches 'bus'
2309 */
2310 sprintf(path, "/sys/bus/pci/drivers/nvme/%s/subsystem",
2311 ent->d_name);
2312 n = readlink(path, link, sizeof(link));
2313 if (n < 0 || n >= (int)sizeof(link))
2314 continue;
2315 link[n] = '\0';
2316 c = strrchr(link, '/');
2317 if (!c)
2318 continue;
2319 if (strncmp("pci", c+1, strlen("pci")) != 0)
2320 continue;
2321
2322 sprintf(path, "/sys/bus/pci/drivers/nvme/%s", ent->d_name);
60f0f54d
PB		 2323
2324 rp = realpath(path, NULL);
2325 if (!rp)
2326 continue;
2327
2328 if (path_attached_to_hba(rp, hba->path)) {
2329 printf(" NVMe under VMD : %s\n", rp);
2330 }
2331 free(rp);
2332 }
2333
b9135011 2334 closedir(dir);
b5eece69 2335 return 0;
60f0f54d
PB		 2336}
2337
120dc887
LM		 2338static void print_found_intel_controllers(struct sys_dev *elem)
2339{
2340 for (; elem; elem = elem->next) {
e7b84f9d 2341 pr_err("found Intel(R) ");
120dc887
LM		 2342 if (elem->type == SYS_DEV_SATA)
2343 fprintf(stderr, "SATA ");
155cbb4c
LM		 2344 else if (elem->type == SYS_DEV_SAS)
2345 fprintf(stderr, "SAS ");
0858eccf
AP		 2346 else if (elem->type == SYS_DEV_NVME)
2347 fprintf(stderr, "NVMe ");
60f0f54d
PB		 2348
2349 if (elem->type == SYS_DEV_VMD)
2350 fprintf(stderr, "VMD domain");
2351 else
2352 fprintf(stderr, "RAID controller");
2353
120dc887
LM		 2354 if (elem->pci_id)
2355 fprintf(stderr, " at %s", elem->pci_id);
2356 fprintf(stderr, ".\n");
2357 }
2358 fflush(stderr);
2359}
2360
120dc887
LM		 2361static int ahci_get_port_count(const char *hba_path, int *port_count)
2362{
2363 struct dirent *ent;
2364 DIR *dir;
2365 int host_base = -1;
2366
2367 *port_count = 0;
2368 if ((dir = opendir(hba_path)) == NULL)
2369 return -1;
2370
2371 for (ent = readdir(dir); ent; ent = readdir(dir)) {
2372 int host;
2373
0858eccf
AP		 2374 if ((sscanf(ent->d_name, "ata%d", &host) != 1) &&
2375 ((sscanf(ent->d_name, "host%d", &host) != 1)))
120dc887
LM		 2376 continue;
2377 if (*port_count == 0)
2378 host_base = host;
2379 else if (host < host_base)
2380 host_base = host;
2381
2382 if (host + 1 > *port_count + host_base)
2383 *port_count = host + 1 - host_base;
2384 }
2385 closedir(dir);
2386 return host_base;
2387}
2388
a891a3c2
LM		 2389static void print_imsm_capability(const struct imsm_orom *orom)
2390{
0858eccf
AP		 2391 printf(" Platform : Intel(R) ");
2392 if (orom->capabilities == 0 && orom->driver_features == 0)
2393 printf("Matrix Storage Manager\n");
ab0c6bb9
AP		 2394 else if (imsm_orom_is_enterprise(orom) && orom->major_ver >= 6)
2395 printf("Virtual RAID on CPU\n");
0858eccf
AP		 2396 else
2397 printf("Rapid Storage Technology%s\n",
2398 imsm_orom_is_enterprise(orom) ? " enterprise" : "");
2399 if (orom->major_ver || orom->minor_ver || orom->hotfix_ver || orom->build)
2400 printf(" Version : %d.%d.%d.%d\n", orom->major_ver,
2401 orom->minor_ver, orom->hotfix_ver, orom->build);
a891a3c2
LM		 2402 printf(" RAID Levels :%s%s%s%s%s\n",
2403 imsm_orom_has_raid0(orom) ? " raid0" : "",
2404 imsm_orom_has_raid1(orom) ? " raid1" : "",
2405 imsm_orom_has_raid1e(orom) ? " raid1e" : "",
2406 imsm_orom_has_raid10(orom) ? " raid10" : "",
2407 imsm_orom_has_raid5(orom) ? " raid5" : "");
2408 printf(" Chunk Sizes :%s%s%s%s%s%s%s%s%s%s%s%s%s%s%s%s\n",
2409 imsm_orom_has_chunk(orom, 2) ? " 2k" : "",
2410 imsm_orom_has_chunk(orom, 4) ? " 4k" : "",
2411 imsm_orom_has_chunk(orom, 8) ? " 8k" : "",
2412 imsm_orom_has_chunk(orom, 16) ? " 16k" : "",
2413 imsm_orom_has_chunk(orom, 32) ? " 32k" : "",
2414 imsm_orom_has_chunk(orom, 64) ? " 64k" : "",
2415 imsm_orom_has_chunk(orom, 128) ? " 128k" : "",
2416 imsm_orom_has_chunk(orom, 256) ? " 256k" : "",
2417 imsm_orom_has_chunk(orom, 512) ? " 512k" : "",
2418 imsm_orom_has_chunk(orom, 1024*1) ? " 1M" : "",
2419 imsm_orom_has_chunk(orom, 1024*2) ? " 2M" : "",
2420 imsm_orom_has_chunk(orom, 1024*4) ? " 4M" : "",
2421 imsm_orom_has_chunk(orom, 1024*8) ? " 8M" : "",
2422 imsm_orom_has_chunk(orom, 1024*16) ? " 16M" : "",
2423 imsm_orom_has_chunk(orom, 1024*32) ? " 32M" : "",
2424 imsm_orom_has_chunk(orom, 1024*64) ? " 64M" : "");
29cd0821
CA		 2425 printf(" 2TB volumes :%s supported\n",
2426 (orom->attr & IMSM_OROM_ATTR_2TB)?"":" not");
2427 printf(" 2TB disks :%s supported\n",
2428 (orom->attr & IMSM_OROM_ATTR_2TB_DISK)?"":" not");
0e7f69a8 2429 printf(" Max Disks : %d\n", orom->tds);
0858eccf
AP		 2430 printf(" Max Volumes : %d per array, %d per %s\n",
2431 orom->vpa, orom->vphba,
2432 imsm_orom_is_nvme(orom) ? "platform" : "controller");
a891a3c2
LM		 2433 return;
2434}
2435
e50cf220
MN		 2436static void print_imsm_capability_export(const struct imsm_orom *orom)
2437{
2438 printf("MD_FIRMWARE_TYPE=imsm\n");
0858eccf
AP		 2439 if (orom->major_ver || orom->minor_ver || orom->hotfix_ver || orom->build)
2440 printf("IMSM_VERSION=%d.%d.%d.%d\n", orom->major_ver, orom->minor_ver,
2441 orom->hotfix_ver, orom->build);
e50cf220
MN		 2442 printf("IMSM_SUPPORTED_RAID_LEVELS=%s%s%s%s%s\n",
2443 imsm_orom_has_raid0(orom) ? "raid0 " : "",
2444 imsm_orom_has_raid1(orom) ? "raid1 " : "",
2445 imsm_orom_has_raid1e(orom) ? "raid1e " : "",
2446 imsm_orom_has_raid5(orom) ? "raid10 " : "",
2447 imsm_orom_has_raid10(orom) ? "raid5 " : "");
2448 printf("IMSM_SUPPORTED_CHUNK_SIZES=%s%s%s%s%s%s%s%s%s%s%s%s%s%s%s%s\n",
2449 imsm_orom_has_chunk(orom, 2) ? "2k " : "",
2450 imsm_orom_has_chunk(orom, 4) ? "4k " : "",
2451 imsm_orom_has_chunk(orom, 8) ? "8k " : "",
2452 imsm_orom_has_chunk(orom, 16) ? "16k " : "",
2453 imsm_orom_has_chunk(orom, 32) ? "32k " : "",
2454 imsm_orom_has_chunk(orom, 64) ? "64k " : "",
2455 imsm_orom_has_chunk(orom, 128) ? "128k " : "",
2456 imsm_orom_has_chunk(orom, 256) ? "256k " : "",
2457 imsm_orom_has_chunk(orom, 512) ? "512k " : "",
2458 imsm_orom_has_chunk(orom, 1024*1) ? "1M " : "",
2459 imsm_orom_has_chunk(orom, 1024*2) ? "2M " : "",
2460 imsm_orom_has_chunk(orom, 1024*4) ? "4M " : "",
2461 imsm_orom_has_chunk(orom, 1024*8) ? "8M " : "",
2462 imsm_orom_has_chunk(orom, 1024*16) ? "16M " : "",
2463 imsm_orom_has_chunk(orom, 1024*32) ? "32M " : "",
2464 imsm_orom_has_chunk(orom, 1024*64) ? "64M " : "");
2465 printf("IMSM_2TB_VOLUMES=%s\n",(orom->attr & IMSM_OROM_ATTR_2TB) ? "yes" : "no");
2466 printf("IMSM_2TB_DISKS=%s\n",(orom->attr & IMSM_OROM_ATTR_2TB_DISK) ? "yes" : "no");
2467 printf("IMSM_MAX_DISKS=%d\n",orom->tds);
2468 printf("IMSM_MAX_VOLUMES_PER_ARRAY=%d\n",orom->vpa);
2469 printf("IMSM_MAX_VOLUMES_PER_CONTROLLER=%d\n",orom->vphba);
2470}
2471
9eafa1de 2472static int detail_platform_imsm(int verbose, int enumerate_only, char *controller_path)
d665cc31
DW		 2473{
2474 /* There are two components to imsm platform support, the ahci SATA
2475 * controller and the option-rom. To find the SATA controller we
2476 * simply look in /sys/bus/pci/drivers/ahci to see if an ahci
2477 * controller with the Intel vendor id is present. This approach
2478 * allows mdadm to leverage the kernel's ahci detection logic, with the
2479 * caveat that if ahci.ko is not loaded mdadm will not be able to
2480 * detect platform raid capabilities. The option-rom resides in a
2481 * platform "Adapter ROM". We scan for its signature to retrieve the
2482 * platform capabilities. If raid support is disabled in the BIOS the
2483 * option-rom capability structure will not be available.
2484 */
d665cc31 2485 struct sys_dev *list, *hba;
d665cc31
DW		 2486 int host_base = 0;
2487 int port_count = 0;
9eafa1de 2488 int result=1;
d665cc31 2489
5615172f 2490 if (enumerate_only) {
a891a3c2 2491 if (check_env("IMSM_NO_PLATFORM"))
5615172f 2492 return 0;
a891a3c2
LM		 2493 list = find_intel_devices();
2494 if (!list)
2495 return 2;
2496 for (hba = list; hba; hba = hba->next) {
6b781d33
AP		 2497 if (find_imsm_capability(hba)) {
2498 result = 0;
a891a3c2
LM		 2499 break;
2500 }
9eafa1de 2501 else
6b781d33 2502 result = 2;
a891a3c2 2503 }
a891a3c2 2504 return result;
5615172f
DW		 2505 }
2506
155cbb4c
LM		 2507 list = find_intel_devices();
2508 if (!list) {
ba728be7 2509 if (verbose > 0)
7a862a02 2510 pr_err("no active Intel(R) RAID controller found.\n");
d665cc31 2511 return 2;
ba728be7 2512 } else if (verbose > 0)
155cbb4c 2513 print_found_intel_controllers(list);
d665cc31 2514
a891a3c2 2515 for (hba = list; hba; hba = hba->next) {
0858eccf 2516 if (controller_path && (compare_paths(hba->path, controller_path) != 0))
9eafa1de 2517 continue;
0858eccf 2518 if (!find_imsm_capability(hba)) {
60f0f54d 2519 char buf[PATH_MAX];
e7b84f9d 2520 pr_err("imsm capabilities not found for controller: %s (type %s)\n",
60f0f54d
PB		 2521 hba->type == SYS_DEV_VMD ? vmd_domain_to_controller(hba, buf) : hba->path,
2522 get_sys_dev_type(hba->type));
0858eccf
AP		 2523 continue;
2524 }
2525 result = 0;
2526 }
2527
2528 if (controller_path && result == 1) {
2529 pr_err("no active Intel(R) RAID controller found under %s\n",
2530 controller_path);
2531 return result;
2532 }
2533
5e1d6128 2534 const struct orom_entry *entry;
0858eccf 2535
5e1d6128 2536 for (entry = orom_entries; entry; entry = entry->next) {
60f0f54d 2537 if (entry->type == SYS_DEV_VMD) {
07cb1e57 2538 print_imsm_capability(&entry->orom);
32716c51
PB		 2539 printf(" 3rd party NVMe :%s supported\n",
2540 imsm_orom_has_tpv_support(&entry->orom)?"":" not");
60f0f54d
PB		 2541 for (hba = list; hba; hba = hba->next) {
2542 if (hba->type == SYS_DEV_VMD) {
2543 char buf[PATH_MAX];
60f0f54d
PB		 2544 printf(" I/O Controller : %s (%s)\n",
2545 vmd_domain_to_controller(hba, buf), get_sys_dev_type(hba->type));
b5eece69
PB		 2546 if (print_vmd_attached_devs(hba)) {
2547 if (verbose > 0)
2548 pr_err("failed to get devices attached to VMD domain.\n");
2549 result |= 2;
2550 }
60f0f54d
PB		 2551 }
2552 }
07cb1e57 2553 printf("\n");
60f0f54d
PB		 2554 continue;
2555 }
0858eccf 2556
60f0f54d
PB		 2557 print_imsm_capability(&entry->orom);
2558 if (entry->type == SYS_DEV_NVME) {
0858eccf
AP		 2559 for (hba = list; hba; hba = hba->next) {
2560 if (hba->type == SYS_DEV_NVME)
2561 printf(" NVMe Device : %s\n", hba->path);
2562 }
60f0f54d 2563 printf("\n");
0858eccf
AP		 2564 continue;
2565 }
2566
2567 struct devid_list *devid;
5e1d6128 2568 for (devid = entry->devid_list; devid; devid = devid->next) {
0858eccf
AP		 2569 hba = device_by_id(devid->devid);
2570 if (!hba)
2571 continue;
2572
9eafa1de
MN		 2573 printf(" I/O Controller : %s (%s)\n",
2574 hba->path, get_sys_dev_type(hba->type));
2575 if (hba->type == SYS_DEV_SATA) {
2576 host_base = ahci_get_port_count(hba->path, &port_count);
2577 if (ahci_enumerate_ports(hba->path, port_count, host_base, verbose)) {
2578 if (verbose > 0)
7a862a02 2579 pr_err("failed to enumerate ports on SATA controller at %s.\n", hba->pci_id);
9eafa1de
MN		 2580 result |= 2;
2581 }
120dc887
LM		 2582 }
2583 }
0858eccf 2584 printf("\n");
d665cc31 2585 }
155cbb4c 2586
120dc887 2587 return result;
d665cc31 2588}
e50cf220 2589
9eafa1de 2590static int export_detail_platform_imsm(int verbose, char *controller_path)
e50cf220 2591{
e50cf220
MN		 2592 struct sys_dev *list, *hba;
2593 int result=1;
2594
2595 list = find_intel_devices();
2596 if (!list) {
2597 if (verbose > 0)
2598 pr_err("IMSM_DETAIL_PLATFORM_ERROR=NO_INTEL_DEVICES\n");
2599 result = 2;
e50cf220
MN		 2600 return result;
2601 }
2602
2603 for (hba = list; hba; hba = hba->next) {
9eafa1de
MN		 2604 if (controller_path && (compare_paths(hba->path,controller_path) != 0))
2605 continue;
60f0f54d
PB		 2606 if (!find_imsm_capability(hba) && verbose > 0) {
2607 char buf[PATH_MAX];
2608 pr_err("IMSM_DETAIL_PLATFORM_ERROR=NO_IMSM_CAPABLE_DEVICE_UNDER_%s\n",
2609 hba->type == SYS_DEV_VMD ? vmd_domain_to_controller(hba, buf) : hba->path);
2610 }
0858eccf 2611 else
e50cf220 2612 result = 0;
e50cf220
MN		 2613 }
2614
5e1d6128 2615 const struct orom_entry *entry;
0858eccf 2616
60f0f54d
PB		 2617 for (entry = orom_entries; entry; entry = entry->next) {
2618 if (entry->type == SYS_DEV_VMD) {
2619 for (hba = list; hba; hba = hba->next)
2620 print_imsm_capability_export(&entry->orom);
2621 continue;
2622 }
5e1d6128 2623 print_imsm_capability_export(&entry->orom);
60f0f54d 2624 }
0858eccf 2625
e50cf220
MN		 2626 return result;
2627}
2628
cdddbdbc
DW		 2629static int match_home_imsm(struct supertype *st, char *homehost)
2630{
5115ca67
DW		 2631 /* the imsm metadata format does not specify any host
2632 * identification information. We return -1 since we can never
2633 * confirm nor deny whether a given array is "meant" for this
148acb7b 2634 * host. We rely on compare_super and the 'family_num' fields to
5115ca67
DW		 2635 * exclude member disks that do not belong, and we rely on
2636 * mdadm.conf to specify the arrays that should be assembled.
2637 * Auto-assembly may still pick up "foreign" arrays.
2638 */
cdddbdbc 2639
9362c1c8 2640 return -1;
cdddbdbc
DW		 2641}
2642
2643static void uuid_from_super_imsm(struct supertype *st, int uuid[4])
2644{
51006d85
N		 2645 /* The uuid returned here is used for:
2646 * uuid to put into bitmap file (Create, Grow)
2647 * uuid for backup header when saving critical section (Grow)
2648 * comparing uuids when re-adding a device into an array
2649 * In these cases the uuid required is that of the data-array,
2650 * not the device-set.
2651 * uuid to recognise same set when adding a missing device back
2652 * to an array. This is a uuid for the device-set.
1011e834 2653 *
51006d85
N		 2654 * For each of these we can make do with a truncated
2655 * or hashed uuid rather than the original, as long as
2656 * everyone agrees.
2657 * In each case the uuid required is that of the data-array,
2658 * not the device-set.
43dad3d6 2659 */
51006d85
N		 2660 /* imsm does not track uuid's so we synthesis one using sha1 on
2661 * - The signature (Which is constant for all imsm array, but no matter)
148acb7b 2662 * - the orig_family_num of the container
51006d85
N		 2663 * - the index number of the volume
2664 * - the 'serial' number of the volume.
2665 * Hopefully these are all constant.
2666 */
2667 struct intel_super *super = st->sb;
43dad3d6 2668
51006d85
N		 2669 char buf[20];
2670 struct sha1_ctx ctx;
2671 struct imsm_dev *dev = NULL;
148acb7b 2672 __u32 family_num;
51006d85 2673
148acb7b
DW		 2674 /* some mdadm versions failed to set ->orig_family_num, in which
2675 * case fall back to ->family_num. orig_family_num will be
2676 * fixed up with the first metadata update.
2677 */
2678 family_num = super->anchor->orig_family_num;
2679 if (family_num == 0)
2680 family_num = super->anchor->family_num;
51006d85 2681 sha1_init_ctx(&ctx);
92bd8f8d 2682 sha1_process_bytes(super->anchor->sig, MPB_SIG_LEN, &ctx);
148acb7b 2683 sha1_process_bytes(&family_num, sizeof(__u32), &ctx);
51006d85
N		 2684 if (super->current_vol >= 0)
2685 dev = get_imsm_dev(super, super->current_vol);
2686 if (dev) {
2687 __u32 vol = super->current_vol;
2688 sha1_process_bytes(&vol, sizeof(vol), &ctx);
2689 sha1_process_bytes(dev->volume, MAX_RAID_SERIAL_LEN, &ctx);
2690 }
2691 sha1_finish_ctx(&ctx, buf);
2692 memcpy(uuid, buf, 4*4);
cdddbdbc
DW		 2693}
2694
0d481d37 2695#if 0
4f5bc454
DW		 2696static void
2697get_imsm_numerical_version(struct imsm_super *mpb, int *m, int *p)
cdddbdbc 2698{
cdddbdbc
DW		 2699 __u8 *v = get_imsm_version(mpb);
2700 __u8 *end = mpb->sig + MAX_SIGNATURE_LENGTH;
2701 char major[] = { 0, 0, 0 };
2702 char minor[] = { 0 ,0, 0 };
2703 char patch[] = { 0, 0, 0 };
2704 char *ver_parse[] = { major, minor, patch };
2705 int i, j;
2706
2707 i = j = 0;
2708 while (*v != '\0' && v < end) {
2709 if (*v != '.' && j < 2)
2710 ver_parse[i][j++] = *v;
2711 else {
2712 i++;
2713 j = 0;
2714 }
2715 v++;
2716 }
2717
4f5bc454
DW		 2718 *m = strtol(minor, NULL, 0);
2719 *p = strtol(patch, NULL, 0);
2720}
0d481d37 2721#endif
4f5bc454 2722
1e5c6983
DW		 2723static __u32 migr_strip_blocks_resync(struct imsm_dev *dev)
2724{
2725 /* migr_strip_size when repairing or initializing parity */
238c0a71 2726 struct imsm_map *map = get_imsm_map(dev, MAP_0);
1e5c6983
DW		 2727 __u32 chunk = __le32_to_cpu(map->blocks_per_strip);
2728
2729 switch (get_imsm_raid_level(map)) {
2730 case 5:
2731 case 10:
2732 return chunk;
2733 default:
2734 return 128*1024 >> 9;
2735 }
2736}
2737
2738static __u32 migr_strip_blocks_rebuild(struct imsm_dev *dev)
2739{
2740 /* migr_strip_size when rebuilding a degraded disk, no idea why
2741 * this is different than migr_strip_size_resync(), but it's good
2742 * to be compatible
2743 */
238c0a71 2744 struct imsm_map *map = get_imsm_map(dev, MAP_1);
1e5c6983
DW		 2745 __u32 chunk = __le32_to_cpu(map->blocks_per_strip);
2746
2747 switch (get_imsm_raid_level(map)) {
2748 case 1:
2749 case 10:
2750 if (map->num_members % map->num_domains == 0)
2751 return 128*1024 >> 9;
2752 else
2753 return chunk;
2754 case 5:
2755 return max((__u32) 64*1024 >> 9, chunk);
2756 default:
2757 return 128*1024 >> 9;
2758 }
2759}
2760
2761static __u32 num_stripes_per_unit_resync(struct imsm_dev *dev)
2762{
238c0a71
AK		 2763 struct imsm_map *lo = get_imsm_map(dev, MAP_0);
2764 struct imsm_map *hi = get_imsm_map(dev, MAP_1);
1e5c6983
DW		 2765 __u32 lo_chunk = __le32_to_cpu(lo->blocks_per_strip);
2766 __u32 hi_chunk = __le32_to_cpu(hi->blocks_per_strip);
2767
2768 return max((__u32) 1, hi_chunk / lo_chunk);
2769}
2770
2771static __u32 num_stripes_per_unit_rebuild(struct imsm_dev *dev)
2772{
238c0a71 2773 struct imsm_map *lo = get_imsm_map(dev, MAP_0);
1e5c6983
DW		 2774 int level = get_imsm_raid_level(lo);
2775
2776 if (level == 1 || level == 10) {
238c0a71 2777 struct imsm_map *hi = get_imsm_map(dev, MAP_1);
1e5c6983
DW		 2778
2779 return hi->num_domains;
2780 } else
2781 return num_stripes_per_unit_resync(dev);
2782}
2783
9529d343 2784static __u8 imsm_num_data_members(struct imsm_map *map)
1e5c6983
DW		 2785{
2786 /* named 'imsm_' because raid0, raid1 and raid10
2787 * counter-intuitively have the same number of data disks
2788 */
1e5c6983
DW		 2789 switch (get_imsm_raid_level(map)) {
2790 case 0:
36fd8ccc
AK		 2791 return map->num_members;
2792 break;
1e5c6983
DW		 2793 case 1:
2794 case 10:
36fd8ccc 2795 return map->num_members/2;
1e5c6983
DW		 2796 case 5:
2797 return map->num_members - 1;
2798 default:
1ade5cc1 2799 dprintf("unsupported raid level\n");
1e5c6983
DW		 2800 return 0;
2801 }
2802}
2803
44490938
MD		 2804static unsigned long long calc_component_size(struct imsm_map *map,
2805 struct imsm_dev *dev)
2806{
2807 unsigned long long component_size;
2808 unsigned long long dev_size = imsm_dev_size(dev);
2809 unsigned long long calc_dev_size = 0;
2810 unsigned int member_disks = imsm_num_data_members(map);
2811
2812 if (member_disks == 0)
2813 return 0;
2814
2815 component_size = per_dev_array_size(map);
2816 calc_dev_size = component_size * member_disks;
2817
2818 /* Component size is rounded to 1MB so difference between size from
2819 * metadata and size calculated from num_data_stripes equals up to
2820 * 2048 blocks per each device. If the difference is higher it means
2821 * that array size was expanded and num_data_stripes was not updated.
2822 */
2823 if ((unsigned int)abs(calc_dev_size - dev_size) >
2824 (1 << SECT_PER_MB_SHIFT) * member_disks) {
2825 component_size = dev_size / member_disks;
2826 dprintf("Invalid num_data_stripes in metadata; expected=%llu, found=%llu\n",
2827 component_size / map->blocks_per_strip,
2828 num_data_stripes(map));
2829 }
2830
2831 return component_size;
2832}
2833
1e5c6983
DW		 2834static __u32 parity_segment_depth(struct imsm_dev *dev)
2835{
238c0a71 2836 struct imsm_map *map = get_imsm_map(dev, MAP_0);
1e5c6983
DW		 2837 __u32 chunk = __le32_to_cpu(map->blocks_per_strip);
2838
2839 switch(get_imsm_raid_level(map)) {
2840 case 1:
2841 case 10:
2842 return chunk * map->num_domains;
2843 case 5:
2844 return chunk * map->num_members;
2845 default:
2846 return chunk;
2847 }
2848}
2849
2850static __u32 map_migr_block(struct imsm_dev *dev, __u32 block)
2851{
238c0a71 2852 struct imsm_map *map = get_imsm_map(dev, MAP_1);
1e5c6983
DW		 2853 __u32 chunk = __le32_to_cpu(map->blocks_per_strip);
2854 __u32 strip = block / chunk;
2855
2856 switch (get_imsm_raid_level(map)) {
2857 case 1:
2858 case 10: {
2859 __u32 vol_strip = (strip * map->num_domains) + 1;
2860 __u32 vol_stripe = vol_strip / map->num_members;
2861
2862 return vol_stripe * chunk + block % chunk;
2863 } case 5: {
2864 __u32 stripe = strip / (map->num_members - 1);
2865
2866 return stripe * chunk + block % chunk;
2867 }
2868 default:
2869 return 0;
2870 }
2871}
2872
c47b0ff6
AK		 2873static __u64 blocks_per_migr_unit(struct intel_super *super,
2874 struct imsm_dev *dev)
1e5c6983
DW		 2875{
2876 /* calculate the conversion factor between per member 'blocks'
2877 * (md/{resync,rebuild}_start) and imsm migration units, return
2878 * 0 for the 'not migrating' and 'unsupported migration' cases
2879 */
2880 if (!dev->vol.migr_state)
2881 return 0;
2882
2883 switch (migr_type(dev)) {
c47b0ff6
AK		 2884 case MIGR_GEN_MIGR: {
2885 struct migr_record *migr_rec = super->migr_rec;
2886 return __le32_to_cpu(migr_rec->blocks_per_unit);
2887 }
1e5c6983
DW		 2888 case MIGR_VERIFY:
2889 case MIGR_REPAIR:
2890 case MIGR_INIT: {
238c0a71 2891 struct imsm_map *map = get_imsm_map(dev, MAP_0);
1e5c6983
DW		 2892 __u32 stripes_per_unit;
2893 __u32 blocks_per_unit;
2894 __u32 parity_depth;
2895 __u32 migr_chunk;
2896 __u32 block_map;
2897 __u32 block_rel;
2898 __u32 segment;
2899 __u32 stripe;
2900 __u8 disks;
2901
2902 /* yes, this is really the translation of migr_units to
2903 * per-member blocks in the 'resync' case
2904 */
2905 stripes_per_unit = num_stripes_per_unit_resync(dev);
2906 migr_chunk = migr_strip_blocks_resync(dev);
9529d343 2907 disks = imsm_num_data_members(map);
1e5c6983 2908 blocks_per_unit = stripes_per_unit * migr_chunk * disks;
7b1ab482 2909 stripe = __le16_to_cpu(map->blocks_per_strip) * disks;
1e5c6983
DW		 2910 segment = blocks_per_unit / stripe;
2911 block_rel = blocks_per_unit - segment * stripe;
2912 parity_depth = parity_segment_depth(dev);
2913 block_map = map_migr_block(dev, block_rel);
2914 return block_map + parity_depth * segment;
2915 }
2916 case MIGR_REBUILD: {
2917 __u32 stripes_per_unit;
2918 __u32 migr_chunk;
2919
2920 stripes_per_unit = num_stripes_per_unit_rebuild(dev);
2921 migr_chunk = migr_strip_blocks_rebuild(dev);
2922 return migr_chunk * stripes_per_unit;
2923 }
1e5c6983
DW		 2924 case MIGR_STATE_CHANGE:
2925 default:
2926 return 0;
2927 }
2928}
2929
c2c087e6
DW		 2930static int imsm_level_to_layout(int level)
2931{
2932 switch (level) {
2933 case 0:
2934 case 1:
2935 return 0;
2936 case 5:
2937 case 6:
a380c027 2938 return ALGORITHM_LEFT_ASYMMETRIC;
c2c087e6 2939 case 10:
c92a2527 2940 return 0x102;
c2c087e6 2941 }
a18a888e 2942 return UnSet;
c2c087e6
DW		 2943}
2944
8e59f3d8
AK		 2945/*******************************************************************************
2946 * Function: read_imsm_migr_rec
2947 * Description: Function reads imsm migration record from last sector of disk
2948 * Parameters:
2949 * fd : disk descriptor
2950 * super : metadata info
2951 * Returns:
2952 * 0 : success,
2953 * -1 : fail
2954 ******************************************************************************/
2955static int read_imsm_migr_rec(int fd, struct intel_super *super)
2956{
2957 int ret_val = -1;
de44e46f 2958 unsigned int sector_size = super->sector_size;
8e59f3d8
AK		 2959 unsigned long long dsize;
2960
2961 get_dev_size(fd, NULL, &dsize);
de44e46f
PB		 2962 if (lseek64(fd, dsize - (sector_size*MIGR_REC_SECTOR_POSITION),
2963 SEEK_SET) < 0) {
e7b84f9d
N		 2964 pr_err("Cannot seek to anchor block: %s\n",
2965 strerror(errno));
8e59f3d8
AK		 2966 goto out;
2967 }
466070ad 2968 if ((unsigned int)read(fd, super->migr_rec_buf,
de44e46f
PB		 2969 MIGR_REC_BUF_SECTORS*sector_size) !=
2970 MIGR_REC_BUF_SECTORS*sector_size) {
e7b84f9d
N		 2971 pr_err("Cannot read migr record block: %s\n",
2972 strerror(errno));
8e59f3d8
AK		 2973 goto out;
2974 }
2975 ret_val = 0;
de44e46f
PB		 2976 if (sector_size == 4096)
2977 convert_from_4k_imsm_migr_rec(super);
8e59f3d8
AK		 2978
2979out:
2980 return ret_val;
2981}
2982
3136abe5
AK		 2983static struct imsm_dev *imsm_get_device_during_migration(
2984 struct intel_super *super)
2985{
2986
2987 struct intel_dev *dv;
2988
2989 for (dv = super->devlist; dv; dv = dv->next) {
2990 if (is_gen_migration(dv->dev))
2991 return dv->dev;
2992 }
2993 return NULL;
2994}
2995
8e59f3d8
AK		 2996/*******************************************************************************
2997 * Function: load_imsm_migr_rec
2998 * Description: Function reads imsm migration record (it is stored at the last
2999 * sector of disk)
3000 * Parameters:
3001 * super : imsm internal array info
3002 * info : general array info
3003 * Returns:
3004 * 0 : success
3005 * -1 : fail
4c965cc9 3006 * -2 : no migration in progress
8e59f3d8
AK		 3007 ******************************************************************************/
3008static int load_imsm_migr_rec(struct intel_super *super, struct mdinfo *info)
3009{
3010 struct mdinfo *sd;
594dc1b8 3011 struct dl *dl;
8e59f3d8
AK		 3012 char nm[30];
3013 int retval = -1;
3014 int fd = -1;
3136abe5 3015 struct imsm_dev *dev;
594dc1b8 3016 struct imsm_map *map;
b4ab44d8 3017 int slot = -1;
3136abe5
AK		 3018
3019 /* find map under migration */
3020 dev = imsm_get_device_during_migration(super);
3021 /* nothing to load,no migration in progress?
3022 */
3023 if (dev == NULL)
4c965cc9 3024 return -2;
8e59f3d8
AK		 3025
3026 if (info) {
3027 for (sd = info->devs ; sd ; sd = sd->next) {
3028 /* read only from one of the first two slots */
12fe93e9
TM		 3029 if ((sd->disk.raid_disk < 0) ||
3030 (sd->disk.raid_disk > 1))
8e59f3d8 3031 continue;
3136abe5 3032
8e59f3d8
AK		 3033 sprintf(nm, "%d:%d", sd->disk.major, sd->disk.minor);
3034 fd = dev_open(nm, O_RDONLY);
3035 if (fd >= 0)
3036 break;
3037 }
3038 }
3039 if (fd < 0) {
12fe93e9 3040 map = get_imsm_map(dev, MAP_0);
8e59f3d8 3041 for (dl = super->disks; dl; dl = dl->next) {
3136abe5
AK		 3042 /* skip spare and failed disks
3043 */
3044 if (dl->index < 0)
3045 continue;
8e59f3d8 3046 /* read only from one of the first two slots */
3136abe5
AK		 3047 if (map)
3048 slot = get_imsm_disk_slot(map, dl->index);
089f9d79 3049 if (map == NULL || slot > 1 || slot < 0)
8e59f3d8
AK		 3050 continue;
3051 sprintf(nm, "%d:%d", dl->major, dl->minor);
3052 fd = dev_open(nm, O_RDONLY);
3053 if (fd >= 0)
3054 break;
3055 }
3056 }
3057 if (fd < 0)
3058 goto out;
3059 retval = read_imsm_migr_rec(fd, super);
3060
3061out:
3062 if (fd >= 0)
3063 close(fd);
3064 return retval;
3065}
3066
c17608ea
AK		 3067/*******************************************************************************
3068 * function: imsm_create_metadata_checkpoint_update
3069 * Description: It creates update for checkpoint change.
3070 * Parameters:
3071 * super : imsm internal array info
3072 * u : pointer to prepared update
3073 * Returns:
3074 * Uptate length.
3075 * If length is equal to 0, input pointer u contains no update
3076 ******************************************************************************/
3077static int imsm_create_metadata_checkpoint_update(
3078 struct intel_super *super,
3079 struct imsm_update_general_migration_checkpoint **u)
3080{
3081
3082 int update_memory_size = 0;
3083
1ade5cc1 3084 dprintf("(enter)\n");
c17608ea
AK		 3085
3086 if (u == NULL)
3087 return 0;
3088 *u = NULL;
3089
3090 /* size of all update data without anchor */
3091 update_memory_size =
3092 sizeof(struct imsm_update_general_migration_checkpoint);
3093
503975b9 3094 *u = xcalloc(1, update_memory_size);
c17608ea 3095 if (*u == NULL) {
1ade5cc1 3096 dprintf("error: cannot get memory\n");
c17608ea
AK		 3097 return 0;
3098 }
3099 (*u)->type = update_general_migration_checkpoint;
3100 (*u)->curr_migr_unit = __le32_to_cpu(super->migr_rec->curr_migr_unit);
1ade5cc1 3101 dprintf("prepared for %u\n", (*u)->curr_migr_unit);
c17608ea
AK		 3102
3103 return update_memory_size;
3104}
3105
c17608ea
AK		 3106static void imsm_update_metadata_locally(struct supertype *st,
3107 void *buf, int len);
3108
687629c2
AK		 3109/*******************************************************************************
3110 * Function: write_imsm_migr_rec
3111 * Description: Function writes imsm migration record
3112 * (at the last sector of disk)
3113 * Parameters:
3114 * super : imsm internal array info
3115 * Returns:
3116 * 0 : success
3117 * -1 : if fail
3118 ******************************************************************************/
3119static int write_imsm_migr_rec(struct supertype *st)
3120{
3121 struct intel_super *super = st->sb;
de44e46f 3122 unsigned int sector_size = super->sector_size;
687629c2
AK		 3123 unsigned long long dsize;
3124 char nm[30];
3125 int fd = -1;
3126 int retval = -1;
3127 struct dl *sd;
c17608ea
AK		 3128 int len;
3129 struct imsm_update_general_migration_checkpoint *u;
3136abe5 3130 struct imsm_dev *dev;
594dc1b8 3131 struct imsm_map *map;
3136abe5
AK		 3132
3133 /* find map under migration */
3134 dev = imsm_get_device_during_migration(super);
3135 /* if no migration, write buffer anyway to clear migr_record
3136 * on disk based on first available device
3137 */
3138 if (dev == NULL)
3139 dev = get_imsm_dev(super, super->current_vol < 0 ? 0 :
3140 super->current_vol);
3141
44bfe6df 3142 map = get_imsm_map(dev, MAP_0);
687629c2 3143
de44e46f
PB		 3144 if (sector_size == 4096)
3145 convert_to_4k_imsm_migr_rec(super);
687629c2 3146 for (sd = super->disks ; sd ; sd = sd->next) {
b4ab44d8 3147 int slot = -1;
3136abe5
AK		 3148
3149 /* skip failed and spare devices */
3150 if (sd->index < 0)
3151 continue;
687629c2 3152 /* write to 2 first slots only */
3136abe5
AK		 3153 if (map)
3154 slot = get_imsm_disk_slot(map, sd->index);
089f9d79 3155 if (map == NULL || slot > 1 || slot < 0)
687629c2 3156 continue;
3136abe5 3157
687629c2
AK		 3158 sprintf(nm, "%d:%d", sd->major, sd->minor);
3159 fd = dev_open(nm, O_RDWR);
3160 if (fd < 0)
3161 continue;
3162 get_dev_size(fd, NULL, &dsize);
de44e46f
PB		 3163 if (lseek64(fd, dsize - (MIGR_REC_SECTOR_POSITION*sector_size),
3164 SEEK_SET) < 0) {
e7b84f9d
N		 3165 pr_err("Cannot seek to anchor block: %s\n",
3166 strerror(errno));
687629c2
AK		 3167 goto out;
3168 }
466070ad 3169 if ((unsigned int)write(fd, super->migr_rec_buf,
de44e46f
PB		 3170 MIGR_REC_BUF_SECTORS*sector_size) !=
3171 MIGR_REC_BUF_SECTORS*sector_size) {
e7b84f9d
N		 3172 pr_err("Cannot write migr record block: %s\n",
3173 strerror(errno));
687629c2
AK		 3174 goto out;
3175 }
3176 close(fd);
3177 fd = -1;
3178 }
de44e46f
PB		 3179 if (sector_size == 4096)
3180 convert_from_4k_imsm_migr_rec(super);
c17608ea
AK		 3181 /* update checkpoint information in metadata */
3182 len = imsm_create_metadata_checkpoint_update(super, &u);
c17608ea
AK		 3183 if (len <= 0) {
3184 dprintf("imsm: Cannot prepare update\n");
3185 goto out;
3186 }
3187 /* update metadata locally */
3188 imsm_update_metadata_locally(st, u, len);
3189 /* and possibly remotely */
3190 if (st->update_tail) {
3191 append_metadata_update(st, u, len);
3192 /* during reshape we do all work inside metadata handler
3193 * manage_reshape(), so metadata update has to be triggered
3194 * insida it
3195 */
3196 flush_metadata_updates(st);
3197 st->update_tail = &st->updates;
3198 } else
3199 free(u);
687629c2
AK		 3200
3201 retval = 0;
3202 out:
3203 if (fd >= 0)
3204 close(fd);
3205 return retval;
3206}
3207
e2962bfc
AK		 3208/* spare/missing disks activations are not allowe when
3209 * array/container performs reshape operation, because
3210 * all arrays in container works on the same disks set
3211 */
3212int imsm_reshape_blocks_arrays_changes(struct intel_super *super)
3213{
3214 int rv = 0;
3215 struct intel_dev *i_dev;
3216 struct imsm_dev *dev;
3217
3218 /* check whole container
3219 */
3220 for (i_dev = super->devlist; i_dev; i_dev = i_dev->next) {
3221 dev = i_dev->dev;
3ad25638 3222 if (is_gen_migration(dev)) {
e2962bfc
AK		 3223 /* No repair during any migration in container
3224 */
3225 rv = 1;
3226 break;
3227 }
3228 }
3229 return rv;
3230}
c41e00b2
AK		 3231static unsigned long long imsm_component_size_aligment_check(int level,
3232 int chunk_size,
f36a9ecd 3233 unsigned int sector_size,
c41e00b2
AK		 3234 unsigned long long component_size)
3235{
3236 unsigned int component_size_alligment;
3237
3238 /* check component size aligment
3239 */
f36a9ecd 3240 component_size_alligment = component_size % (chunk_size/sector_size);
c41e00b2 3241
1ade5cc1 3242 dprintf("(Level: %i, chunk_size = %i, component_size = %llu), component_size_alligment = %u\n",
c41e00b2
AK		 3243 level, chunk_size, component_size,
3244 component_size_alligment);
3245
3246 if (component_size_alligment && (level != 1) && (level != UnSet)) {
3247 dprintf("imsm: reported component size alligned from %llu ",
3248 component_size);
3249 component_size -= component_size_alligment;
1ade5cc1 3250 dprintf_cont("to %llu (%i).\n",
c41e00b2
AK		 3251 component_size, component_size_alligment);
3252 }
3253
3254 return component_size;
3255}
e2962bfc 3256
2432ce9b
AP		 3257static unsigned long long get_ppl_sector(struct intel_super *super, int dev_idx)
3258{
3259 struct imsm_dev *dev = get_imsm_dev(super, dev_idx);
3260 struct imsm_map *map = get_imsm_map(dev, MAP_0);
3261
3262 return pba_of_lba0(map) +
3263 (num_data_stripes(map) * map->blocks_per_strip);
3264}
3265
a5d85af7 3266static void getinfo_super_imsm_volume(struct supertype *st, struct mdinfo *info, char *dmap)
bf5a934a
DW		 3267{
3268 struct intel_super *super = st->sb;
c47b0ff6 3269 struct migr_record *migr_rec = super->migr_rec;
949c47a0 3270 struct imsm_dev *dev = get_imsm_dev(super, super->current_vol);
238c0a71
AK		 3271 struct imsm_map *map = get_imsm_map(dev, MAP_0);
3272 struct imsm_map *prev_map = get_imsm_map(dev, MAP_1);
b335e593 3273 struct imsm_map *map_to_analyse = map;
efb30e7f 3274 struct dl *dl;
a5d85af7 3275 int map_disks = info->array.raid_disks;
bf5a934a 3276
95eeceeb 3277 memset(info, 0, sizeof(*info));
b335e593
AK		 3278 if (prev_map)
3279 map_to_analyse = prev_map;
3280
ca0748fa 3281 dl = super->current_disk;
9894ec0d 3282
bf5a934a 3283 info->container_member = super->current_vol;
cd0430a1 3284 info->array.raid_disks = map->num_members;
b335e593 3285 info->array.level = get_imsm_raid_level(map_to_analyse);
bf5a934a
DW		 3286 info->array.layout = imsm_level_to_layout(info->array.level);
3287 info->array.md_minor = -1;
3288 info->array.ctime = 0;
3289 info->array.utime = 0;
b335e593
AK		 3290 info->array.chunk_size =
3291 __le16_to_cpu(map_to_analyse->blocks_per_strip) << 9;
2432ce9b 3292 info->array.state = !(dev->vol.dirty & RAIDVOL_DIRTY);
fcc2c9da 3293 info->custom_array_size = imsm_dev_size(dev);
3ad25638
AK		 3294 info->recovery_blocked = imsm_reshape_blocks_arrays_changes(st->sb);
3295
3f510843 3296 if (is_gen_migration(dev)) {
3f83228a 3297 info->reshape_active = 1;
b335e593
AK		 3298 info->new_level = get_imsm_raid_level(map);
3299 info->new_layout = imsm_level_to_layout(info->new_level);
3300 info->new_chunk = __le16_to_cpu(map->blocks_per_strip) << 9;
3f83228a 3301 info->delta_disks = map->num_members - prev_map->num_members;
493f5dd6
N		 3302 if (info->delta_disks) {
3303 /* this needs to be applied to every array
3304 * in the container.
3305 */
81219e70 3306 info->reshape_active = CONTAINER_RESHAPE;
493f5dd6 3307 }
3f83228a
N		 3308 /* We shape information that we give to md might have to be
3309 * modify to cope with md's requirement for reshaping arrays.
3310 * For example, when reshaping a RAID0, md requires it to be
3311 * presented as a degraded RAID4.
3312 * Also if a RAID0 is migrating to a RAID5 we need to specify
3313 * the array as already being RAID5, but the 'before' layout
3314 * is a RAID4-like layout.
3315 */
3316 switch (info->array.level) {
3317 case 0:
3318 switch(info->new_level) {
3319 case 0:
3320 /* conversion is happening as RAID4 */
3321 info->array.level = 4;
3322 info->array.raid_disks += 1;
3323 break;
3324 case 5:
3325 /* conversion is happening as RAID5 */
3326 info->array.level = 5;
3327 info->array.layout = ALGORITHM_PARITY_N;
3f83228a
N		 3328 info->delta_disks -= 1;
3329 break;
3330 default:
3331 /* FIXME error message */
3332 info->array.level = UnSet;
3333 break;
3334 }
3335 break;
3336 }
b335e593
AK		 3337 } else {
3338 info->new_level = UnSet;
3339 info->new_layout = UnSet;
3340 info->new_chunk = info->array.chunk_size;
3f83228a 3341 info->delta_disks = 0;
b335e593 3342 }
ca0748fa 3343
efb30e7f
DW		 3344 if (dl) {
3345 info->disk.major = dl->major;
3346 info->disk.minor = dl->minor;
ca0748fa 3347 info->disk.number = dl->index;
656b6b5a
N		 3348 info->disk.raid_disk = get_imsm_disk_slot(map_to_analyse,
3349 dl->index);
efb30e7f 3350 }
bf5a934a 3351
5551b113 3352 info->data_offset = pba_of_lba0(map_to_analyse);
44490938 3353 info->component_size = calc_component_size(map, dev);
c41e00b2
AK		 3354 info->component_size = imsm_component_size_aligment_check(
3355 info->array.level,
3356 info->array.chunk_size,
f36a9ecd 3357 super->sector_size,
c41e00b2 3358 info->component_size);
5e46202e 3359 info->bb.supported = 1;
139dae11 3360
301406c9 3361 memset(info->uuid, 0, sizeof(info->uuid));
921d9e16 3362 info->recovery_start = MaxSector;
bf5a934a 3363
c2462068
PB		 3364 if (info->array.level == 5 &&
3365 (dev->rwh_policy == RWH_DISTRIBUTED ||
3366 dev->rwh_policy == RWH_MULTIPLE_DISTRIBUTED)) {
2432ce9b
AP		 3367 info->consistency_policy = CONSISTENCY_POLICY_PPL;
3368 info->ppl_sector = get_ppl_sector(super, super->current_vol);
c2462068
PB		 3369 if (dev->rwh_policy == RWH_MULTIPLE_DISTRIBUTED)
3370 info->ppl_size = MULTIPLE_PPL_AREA_SIZE_IMSM >> 9;
3371 else
3372 info->ppl_size = (PPL_HEADER_SIZE + PPL_ENTRY_SPACE)
3373 >> 9;
2432ce9b
AP		 3374 } else if (info->array.level <= 0) {
3375 info->consistency_policy = CONSISTENCY_POLICY_NONE;
3376 } else {
3377 info->consistency_policy = CONSISTENCY_POLICY_RESYNC;
3378 }
3379
d2e6d5d6 3380 info->reshape_progress = 0;
b6796ce1 3381 info->resync_start = MaxSector;
b9172665 3382 if ((map_to_analyse->map_state == IMSM_T_STATE_UNINITIALIZED ||
2432ce9b 3383 !(info->array.state & 1)) &&
b9172665 3384 imsm_reshape_blocks_arrays_changes(super) == 0) {
301406c9 3385 info->resync_start = 0;
b6796ce1
AK		 3386 }
3387 if (dev->vol.migr_state) {
1e5c6983
DW		 3388 switch (migr_type(dev)) {
3389 case MIGR_REPAIR:
3390 case MIGR_INIT: {
c47b0ff6
AK		 3391 __u64 blocks_per_unit = blocks_per_migr_unit(super,
3392 dev);
1e5c6983
DW		 3393 __u64 units = __le32_to_cpu(dev->vol.curr_migr_unit);
3394
3395 info->resync_start = blocks_per_unit * units;
3396 break;
3397 }
d2e6d5d6 3398 case MIGR_GEN_MIGR: {
c47b0ff6
AK		 3399 __u64 blocks_per_unit = blocks_per_migr_unit(super,
3400 dev);
3401 __u64 units = __le32_to_cpu(migr_rec->curr_migr_unit);
04fa9523
AK		 3402 unsigned long long array_blocks;
3403 int used_disks;
d2e6d5d6 3404
befb629b
AK		 3405 if (__le32_to_cpu(migr_rec->ascending_migr) &&
3406 (units <
3407 (__le32_to_cpu(migr_rec->num_migr_units)-1)) &&
3408 (super->migr_rec->rec_status ==
3409 __cpu_to_le32(UNIT_SRC_IN_CP_AREA)))
3410 units++;
3411
d2e6d5d6 3412 info->reshape_progress = blocks_per_unit * units;
6289d1e0 3413
7a862a02 3414 dprintf("IMSM: General Migration checkpoint : %llu (%llu) -> read reshape progress : %llu\n",
19986c72
MB		 3415 (unsigned long long)units,
3416 (unsigned long long)blocks_per_unit,
3417 info->reshape_progress);
75156c46 3418
9529d343 3419 used_disks = imsm_num_data_members(prev_map);
75156c46 3420 if (used_disks > 0) {
44490938 3421 array_blocks = per_dev_array_size(map) *
75156c46 3422 used_disks;
b53bfba6
TM		 3423 info->custom_array_size =
3424 round_size_to_mb(array_blocks,
3425 used_disks);
3426
75156c46 3427 }
d2e6d5d6 3428 }
1e5c6983
DW		 3429 case MIGR_VERIFY:
3430 /* we could emulate the checkpointing of
3431 * 'sync_action=check' migrations, but for now
3432 * we just immediately complete them
3433 */
3434 case MIGR_REBUILD:
3435 /* this is handled by container_content_imsm() */
1e5c6983
DW		 3436 case MIGR_STATE_CHANGE:
3437 /* FIXME handle other migrations */
3438 default:
3439 /* we are not dirty, so... */
3440 info->resync_start = MaxSector;
3441 }
b6796ce1 3442 }
301406c9
DW		 3443
3444 strncpy(info->name, (char *) dev->volume, MAX_RAID_SERIAL_LEN);
3445 info->name[MAX_RAID_SERIAL_LEN] = 0;
bf5a934a 3446
f35f2525
N		 3447 info->array.major_version = -1;
3448 info->array.minor_version = -2;
4dd2df09 3449 sprintf(info->text_version, "/%s/%d", st->container_devnm, info->container_member);
a67dd8cc 3450 info->safe_mode_delay = 4000; /* 4 secs like the Matrix driver */
51006d85 3451 uuid_from_super_imsm(st, info->uuid);
a5d85af7
N		 3452
3453 if (dmap) {
3454 int i, j;
3455 for (i=0; i<map_disks; i++) {
3456 dmap[i] = 0;
3457 if (i < info->array.raid_disks) {
3458 struct imsm_disk *dsk;
238c0a71 3459 j = get_imsm_disk_idx(dev, i, MAP_X);
a5d85af7
N		 3460 dsk = get_imsm_disk(super, j);
3461 if (dsk && (dsk->status & CONFIGURED_DISK))
3462 dmap[i] = 1;
3463 }
3464 }
3465 }
81ac8b4d 3466}
bf5a934a 3467
3b451610
AK		 3468static __u8 imsm_check_degraded(struct intel_super *super, struct imsm_dev *dev,
3469 int failed, int look_in_map);
3470
3471static int imsm_count_failed(struct intel_super *super, struct imsm_dev *dev,
3472 int look_in_map);
3473
3474static void manage_second_map(struct intel_super *super, struct imsm_dev *dev)
3475{
3476 if (is_gen_migration(dev)) {
3477 int failed;
3478 __u8 map_state;
3479 struct imsm_map *map2 = get_imsm_map(dev, MAP_1);
3480
3481 failed = imsm_count_failed(super, dev, MAP_1);
238c0a71 3482 map_state = imsm_check_degraded(super, dev, failed, MAP_1);
3b451610
AK		 3483 if (map2->map_state != map_state) {
3484 map2->map_state = map_state;
3485 super->updates_pending++;
3486 }
3487 }
3488}
97b4d0e9
DW		 3489
3490static struct imsm_disk *get_imsm_missing(struct intel_super *super, __u8 index)
3491{
3492 struct dl *d;
3493
3494 for (d = super->missing; d; d = d->next)
3495 if (d->index == index)
3496 return &d->disk;
3497 return NULL;
3498}
3499
a5d85af7 3500static void getinfo_super_imsm(struct supertype *st, struct mdinfo *info, char *map)
4f5bc454
DW		 3501{
3502 struct intel_super *super = st->sb;
4f5bc454 3503 struct imsm_disk *disk;
a5d85af7 3504 int map_disks = info->array.raid_disks;
ab3cb6b3
N		 3505 int max_enough = -1;
3506 int i;
3507 struct imsm_super *mpb;
4f5bc454 3508
bf5a934a 3509 if (super->current_vol >= 0) {
a5d85af7 3510 getinfo_super_imsm_volume(st, info, map);
bf5a934a
DW		 3511 return;
3512 }
95eeceeb 3513 memset(info, 0, sizeof(*info));
d23fe947
DW		 3514
3515 /* Set raid_disks to zero so that Assemble will always pull in valid
3516 * spares
3517 */
3518 info->array.raid_disks = 0;
cdddbdbc
DW		 3519 info->array.level = LEVEL_CONTAINER;
3520 info->array.layout = 0;
3521 info->array.md_minor = -1;
1011e834 3522 info->array.ctime = 0; /* N/A for imsm */
cdddbdbc
DW		 3523 info->array.utime = 0;
3524 info->array.chunk_size = 0;
3525
3526 info->disk.major = 0;
3527 info->disk.minor = 0;
cdddbdbc 3528 info->disk.raid_disk = -1;
c2c087e6 3529 info->reshape_active = 0;
f35f2525
N		 3530 info->array.major_version = -1;
3531 info->array.minor_version = -2;
c2c087e6 3532 strcpy(info->text_version, "imsm");
a67dd8cc 3533 info->safe_mode_delay = 0;
c2c087e6
DW		 3534 info->disk.number = -1;
3535 info->disk.state = 0;
c5afc314 3536 info->name[0] = 0;
921d9e16 3537 info->recovery_start = MaxSector;
3ad25638 3538 info->recovery_blocked = imsm_reshape_blocks_arrays_changes(st->sb);
5e46202e 3539 info->bb.supported = 1;
c2c087e6 3540
97b4d0e9 3541 /* do we have the all the insync disks that we expect? */
ab3cb6b3 3542 mpb = super->anchor;
b7d81a38 3543 info->events = __le32_to_cpu(mpb->generation_num);
97b4d0e9 3544
ab3cb6b3
N		 3545 for (i = 0; i < mpb->num_raid_devs; i++) {
3546 struct imsm_dev *dev = get_imsm_dev(super, i);
3547 int failed, enough, j, missing = 0;
3548 struct imsm_map *map;
3549 __u8 state;
97b4d0e9 3550
3b451610
AK		 3551 failed = imsm_count_failed(super, dev, MAP_0);
3552 state = imsm_check_degraded(super, dev, failed, MAP_0);
238c0a71 3553 map = get_imsm_map(dev, MAP_0);
ab3cb6b3
N		 3554
3555 /* any newly missing disks?
3556 * (catches single-degraded vs double-degraded)
3557 */
3558 for (j = 0; j < map->num_members; j++) {
238c0a71 3559 __u32 ord = get_imsm_ord_tbl_ent(dev, j, MAP_0);
ab3cb6b3
N		 3560 __u32 idx = ord_to_idx(ord);
3561
20dc76d1
MT		 3562 if (super->disks && super->disks->index == (int)idx)
3563 info->disk.raid_disk = j;
3564
ab3cb6b3
N		 3565 if (!(ord & IMSM_ORD_REBUILD) &&
3566 get_imsm_missing(super, idx)) {
3567 missing = 1;
3568 break;
3569 }
97b4d0e9 3570 }
ab3cb6b3
N		 3571
3572 if (state == IMSM_T_STATE_FAILED)
3573 enough = -1;
3574 else if (state == IMSM_T_STATE_DEGRADED &&
3575 (state != map->map_state || missing))
3576 enough = 0;
3577 else /* we're normal, or already degraded */
3578 enough = 1;
d2bde6d3
AK		 3579 if (is_gen_migration(dev) && missing) {
3580 /* during general migration we need all disks
3581 * that process is running on.
3582 * No new missing disk is allowed.
3583 */
3584 max_enough = -1;
3585 enough = -1;
3586 /* no more checks necessary
3587 */
3588 break;
3589 }
ab3cb6b3
N		 3590 /* in the missing/failed disk case check to see
3591 * if at least one array is runnable
3592 */
3593 max_enough = max(max_enough, enough);
3594 }
1ade5cc1 3595 dprintf("enough: %d\n", max_enough);
ab3cb6b3 3596 info->container_enough = max_enough;
97b4d0e9 3597
4a04ec6c 3598 if (super->disks) {
14e8215b
DW		 3599 __u32 reserved = imsm_reserved_sectors(super, super->disks);
3600
b9f594fe 3601 disk = &super->disks->disk;
5551b113 3602 info->data_offset = total_blocks(&super->disks->disk) - reserved;
14e8215b 3603 info->component_size = reserved;
25ed7e59 3604 info->disk.state = is_configured(disk) ? (1 << MD_DISK_ACTIVE) : 0;
df474657
DW		 3605 /* we don't change info->disk.raid_disk here because
3606 * this state will be finalized in mdmon after we have
3607 * found the 'most fresh' version of the metadata
3608 */
25ed7e59 3609 info->disk.state |= is_failed(disk) ? (1 << MD_DISK_FAULTY) : 0;
2432ce9b
AP		 3610 info->disk.state |= (is_spare(disk) || is_journal(disk)) ?
3611 0 : (1 << MD_DISK_SYNC);
cdddbdbc 3612 }
a575e2a7
DW		 3613
3614 /* only call uuid_from_super_imsm when this disk is part of a populated container,
3615 * ->compare_super may have updated the 'num_raid_devs' field for spares
3616 */
3617 if (info->disk.state & (1 << MD_DISK_SYNC) || super->anchor->num_raid_devs)
36ba7d48 3618 uuid_from_super_imsm(st, info->uuid);
22e263f6
AC		 3619 else
3620 memcpy(info->uuid, uuid_zero, sizeof(uuid_zero));
a5d85af7
N		 3621
3622 /* I don't know how to compute 'map' on imsm, so use safe default */
3623 if (map) {
3624 int i;
3625 for (i = 0; i < map_disks; i++)
3626 map[i] = 1;
3627 }
3628
cdddbdbc
DW		 3629}
3630
5c4cd5da
AC		 3631/* allocates memory and fills disk in mdinfo structure
3632 * for each disk in array */
3633struct mdinfo *getinfo_super_disks_imsm(struct supertype *st)
3634{
594dc1b8 3635 struct mdinfo *mddev;
5c4cd5da
AC		 3636 struct intel_super *super = st->sb;
3637 struct imsm_disk *disk;
3638 int count = 0;
3639 struct dl *dl;
3640 if (!super || !super->disks)
3641 return NULL;
3642 dl = super->disks;
503975b9 3643 mddev = xcalloc(1, sizeof(*mddev));
5c4cd5da
AC		 3644 while (dl) {
3645 struct mdinfo *tmp;
3646 disk = &dl->disk;
503975b9 3647 tmp = xcalloc(1, sizeof(*tmp));
5c4cd5da
AC		 3648 if (mddev->devs)
3649 tmp->next = mddev->devs;
3650 mddev->devs = tmp;
3651 tmp->disk.number = count++;
3652 tmp->disk.major = dl->major;
3653 tmp->disk.minor = dl->minor;
3654 tmp->disk.state = is_configured(disk) ?
3655 (1 << MD_DISK_ACTIVE) : 0;
3656 tmp->disk.state |= is_failed(disk) ? (1 << MD_DISK_FAULTY) : 0;
3657 tmp->disk.state |= is_spare(disk) ? 0 : (1 << MD_DISK_SYNC);
3658 tmp->disk.raid_disk = -1;
3659 dl = dl->next;
3660 }
3661 return mddev;
3662}
3663
cdddbdbc
DW		 3664static int update_super_imsm(struct supertype *st, struct mdinfo *info,
3665 char *update, char *devname, int verbose,
3666 int uuid_set, char *homehost)
3667{
f352c545
DW		 3668 /* For 'assemble' and 'force' we need to return non-zero if any
3669 * change was made. For others, the return value is ignored.
3670 * Update options are:
3671 * force-one : This device looks a bit old but needs to be included,
3672 * update age info appropriately.
3673 * assemble: clear any 'faulty' flag to allow this device to
3674 * be assembled.
3675 * force-array: Array is degraded but being forced, mark it clean
3676 * if that will be needed to assemble it.
3677 *
3678 * newdev: not used ????
3679 * grow: Array has gained a new device - this is currently for
3680 * linear only
3681 * resync: mark as dirty so a resync will happen.
3682 * name: update the name - preserving the homehost
6e46bf34 3683 * uuid: Change the uuid of the array to match watch is given
f352c545
DW		 3684 *
3685 * Following are not relevant for this imsm:
3686 * sparc2.2 : update from old dodgey metadata
3687 * super-minor: change the preferred_minor number
3688 * summaries: update redundant counters.
f352c545
DW		 3689 * homehost: update the recorded homehost
3690 * _reshape_progress: record new reshape_progress position.
3691 */
6e46bf34
DW		 3692 int rv = 1;
3693 struct intel_super *super = st->sb;
3694 struct imsm_super *mpb;
f352c545 3695
6e46bf34
DW		 3696 /* we can only update container info */
3697 if (!super || super->current_vol >= 0 || !super->anchor)
3698 return 1;
3699
3700 mpb = super->anchor;
3701
81a5b4f5
N		 3702 if (strcmp(update, "uuid") == 0) {
3703 /* We take this to mean that the family_num should be updated.
3704 * However that is much smaller than the uuid so we cannot really
3705 * allow an explicit uuid to be given. And it is hard to reliably
3706 * know if one was.
3707 * So if !uuid_set we know the current uuid is random and just used
3708 * the first 'int' and copy it to the other 3 positions.
3709 * Otherwise we require the 4 'int's to be the same as would be the
3710 * case if we are using a random uuid. So an explicit uuid will be
3711 * accepted as long as all for ints are the same... which shouldn't hurt
6e46bf34 3712 */
81a5b4f5
N		 3713 if (!uuid_set) {
3714 info->uuid[1] = info->uuid[2] = info->uuid[3] = info->uuid[0];
6e46bf34 3715 rv = 0;
81a5b4f5
N		 3716 } else {
3717 if (info->uuid[0] != info->uuid[1] ||
3718 info->uuid[1] != info->uuid[2] ||
3719 info->uuid[2] != info->uuid[3])
3720 rv = -1;
3721 else
3722 rv = 0;
6e46bf34 3723 }
81a5b4f5
N		 3724 if (rv == 0)
3725 mpb->orig_family_num = info->uuid[0];
6e46bf34
DW		 3726 } else if (strcmp(update, "assemble") == 0)
3727 rv = 0;
3728 else
1e2b2765 3729 rv = -1;
f352c545 3730
6e46bf34
DW		 3731 /* successful update? recompute checksum */
3732 if (rv == 0)
3733 mpb->check_sum = __le32_to_cpu(__gen_imsm_checksum(mpb));
f352c545
DW		 3734
3735 return rv;
cdddbdbc
DW		 3736}
3737
c2c087e6 3738static size_t disks_to_mpb_size(int disks)
cdddbdbc 3739{
c2c087e6 3740 size_t size;
cdddbdbc 3741
c2c087e6
DW		 3742 size = sizeof(struct imsm_super);
3743 size += (disks - 1) * sizeof(struct imsm_disk);
3744 size += 2 * sizeof(struct imsm_dev);
3745 /* up to 2 maps per raid device (-2 for imsm_maps in imsm_dev */
3746 size += (4 - 2) * sizeof(struct imsm_map);
3747 /* 4 possible disk_ord_tbl's */
3748 size += 4 * (disks - 1) * sizeof(__u32);
bbab0940
TM		 3749 /* maximum bbm log */
3750 size += sizeof(struct bbm_log);
c2c087e6
DW		 3751
3752 return size;
3753}
3754
387fcd59
N		 3755static __u64 avail_size_imsm(struct supertype *st, __u64 devsize,
3756 unsigned long long data_offset)
c2c087e6
DW		 3757{
3758 if (devsize < (MPB_SECTOR_CNT + IMSM_RESERVED_SECTORS))
3759 return 0;
3760
3761 return devsize - (MPB_SECTOR_CNT + IMSM_RESERVED_SECTORS);
cdddbdbc
DW		 3762}
3763
ba2de7ba
DW		 3764static void free_devlist(struct intel_super *super)
3765{
3766 struct intel_dev *dv;
3767
3768 while (super->devlist) {
3769 dv = super->devlist->next;
3770 free(super->devlist->dev);
3771 free(super->devlist);
3772 super->devlist = dv;
3773 }
3774}
3775
3776static void imsm_copy_dev(struct imsm_dev *dest, struct imsm_dev *src)
3777{
3778 memcpy(dest, src, sizeof_imsm_dev(src, 0));
3779}
3780
cdddbdbc
DW		 3781static int compare_super_imsm(struct supertype *st, struct supertype *tst)
3782{
3783 /*
3784 * return:
3785 * 0 same, or first was empty, and second was copied
3786 * 1 second had wrong number
3787 * 2 wrong uuid
3788 * 3 wrong other info
3789 */
3790 struct intel_super *first = st->sb;
3791 struct intel_super *sec = tst->sb;
3792
5d500228
N		 3793 if (!first) {
3794 st->sb = tst->sb;
3795 tst->sb = NULL;
3796 return 0;
3797 }
8603ea6f
LM		 3798 /* in platform dependent environment test if the disks
3799 * use the same Intel hba
cb8f6859 3800 * If not on Intel hba at all, allow anything.
8603ea6f 3801 */
6b781d33
AP		 3802 if (!check_env("IMSM_NO_PLATFORM") && first->hba && sec->hba) {
3803 if (first->hba->type != sec->hba->type) {
8603ea6f 3804 fprintf(stderr,
6b781d33
AP		 3805 "HBAs of devices do not match %s != %s\n",
3806 get_sys_dev_type(first->hba->type),
3807 get_sys_dev_type(sec->hba->type));
3808 return 3;
3809 }
3810 if (first->orom != sec->orom) {
3811 fprintf(stderr,
3812 "HBAs of devices do not match %s != %s\n",
3813 first->hba->pci_id, sec->hba->pci_id);
8603ea6f
LM		 3814 return 3;
3815 }
3816 }
cdddbdbc 3817
d23fe947
DW		 3818 /* if an anchor does not have num_raid_devs set then it is a free
3819 * floating spare
3820 */
3821 if (first->anchor->num_raid_devs > 0 &&
3822 sec->anchor->num_raid_devs > 0) {
a2b97981
DW		 3823 /* Determine if these disks might ever have been
3824 * related. Further disambiguation can only take place
3825 * in load_super_imsm_all
3826 */
3827 __u32 first_family = first->anchor->orig_family_num;
3828 __u32 sec_family = sec->anchor->orig_family_num;
3829
f796af5d
DW		 3830 if (memcmp(first->anchor->sig, sec->anchor->sig,
3831 MAX_SIGNATURE_LENGTH) != 0)
3832 return 3;
3833
a2b97981
DW		 3834 if (first_family == 0)
3835 first_family = first->anchor->family_num;
3836 if (sec_family == 0)
3837 sec_family = sec->anchor->family_num;
3838
3839 if (first_family != sec_family)
d23fe947 3840 return 3;
f796af5d 3841
d23fe947 3842 }
cdddbdbc 3843
3e372e5a
DW		 3844 /* if 'first' is a spare promote it to a populated mpb with sec's
3845 * family number
3846 */
3847 if (first->anchor->num_raid_devs == 0 &&
3848 sec->anchor->num_raid_devs > 0) {
78d30f94 3849 int i;
ba2de7ba
DW		 3850 struct intel_dev *dv;
3851 struct imsm_dev *dev;
78d30f94
DW		 3852
3853 /* we need to copy raid device info from sec if an allocation
3854 * fails here we don't associate the spare
3855 */
3856 for (i = 0; i < sec->anchor->num_raid_devs; i++) {
503975b9
N		 3857 dv = xmalloc(sizeof(*dv));
3858 dev = xmalloc(sizeof_imsm_dev(get_imsm_dev(sec, i), 1));
ba2de7ba
DW		 3859 dv->dev = dev;
3860 dv->index = i;
3861 dv->next = first->devlist;
3862 first->devlist = dv;
78d30f94 3863 }
709743c5 3864 if (i < sec->anchor->num_raid_devs) {
ba2de7ba
DW		 3865 /* allocation failure */
3866 free_devlist(first);
e12b3daa 3867 pr_err("imsm: failed to associate spare\n");
ba2de7ba 3868 return 3;
78d30f94 3869 }
3e372e5a 3870 first->anchor->num_raid_devs = sec->anchor->num_raid_devs;
148acb7b 3871 first->anchor->orig_family_num = sec->anchor->orig_family_num;
3e372e5a 3872 first->anchor->family_num = sec->anchor->family_num;
ac6449be 3873 memcpy(first->anchor->sig, sec->anchor->sig, MAX_SIGNATURE_LENGTH);
709743c5
DW		 3874 for (i = 0; i < sec->anchor->num_raid_devs; i++)
3875 imsm_copy_dev(get_imsm_dev(first, i), get_imsm_dev(sec, i));
3e372e5a
DW		 3876 }
3877
cdddbdbc
DW		 3878 return 0;
3879}
3880
0030e8d6
DW		 3881static void fd2devname(int fd, char *name)
3882{
3883 struct stat st;
3884 char path[256];
33a6535d 3885 char dname[PATH_MAX];
0030e8d6
DW		 3886 char *nm;
3887 int rv;
3888
3889 name[0] = '\0';
3890 if (fstat(fd, &st) != 0)
3891 return;
3892 sprintf(path, "/sys/dev/block/%d:%d",
3893 major(st.st_rdev), minor(st.st_rdev));
3894
9cf014ec 3895 rv = readlink(path, dname, sizeof(dname)-1);
0030e8d6
DW		 3896 if (rv <= 0)
3897 return;
9587c373 3898
0030e8d6
DW		 3899 dname[rv] = '\0';
3900 nm = strrchr(dname, '/');
7897de29
JS		 3901 if (nm) {
3902 nm++;
3903 snprintf(name, MAX_RAID_SERIAL_LEN, "/dev/%s", nm);
3904 }
0030e8d6
DW		 3905}
3906
21e9380b
AP		 3907static int nvme_get_serial(int fd, void *buf, size_t buf_len)
3908{
3909 char path[60];
3910 char *name = fd2kname(fd);
3911
3912 if (!name)
3913 return 1;
3914
3915 if (strncmp(name, "nvme", 4) != 0)
3916 return 1;
3917
3918 snprintf(path, sizeof(path) - 1, "/sys/block/%s/device/serial", name);
3919
3920 return load_sys(path, buf, buf_len);
3921}
3922
cdddbdbc
DW		 3923extern int scsi_get_serial(int fd, void *buf, size_t buf_len);
3924
3925static int imsm_read_serial(int fd, char *devname,
3926 __u8 serial[MAX_RAID_SERIAL_LEN])
3927{
21e9380b 3928 char buf[50];
cdddbdbc 3929 int rv;
1f24f035 3930 int len;
316e2bf4
DW		 3931 char *dest;
3932 char *src;
21e9380b
AP		 3933 unsigned int i;
3934
3935 memset(buf, 0, sizeof(buf));
cdddbdbc 3936
21e9380b 3937 rv = nvme_get_serial(fd, buf, sizeof(buf));
cdddbdbc 3938
21e9380b
AP		 3939 if (rv)
3940 rv = scsi_get_serial(fd, buf, sizeof(buf));
f9ba0ff1 3941
40ebbb9c 3942 if (rv && check_env("IMSM_DEVNAME_AS_SERIAL")) {
f9ba0ff1
DW		 3943 memset(serial, 0, MAX_RAID_SERIAL_LEN);
3944 fd2devname(fd, (char *) serial);
0030e8d6
DW		 3945 return 0;
3946 }
3947
cdddbdbc
DW		 3948 if (rv != 0) {
3949 if (devname)
e7b84f9d
N		 3950 pr_err("Failed to retrieve serial for %s\n",
3951 devname);
cdddbdbc
DW		 3952 return rv;
3953 }
3954
316e2bf4
DW		 3955 /* trim all whitespace and non-printable characters and convert
3956 * ':' to ';'
3957 */
21e9380b
AP		 3958 for (i = 0, dest = buf; i < sizeof(buf) && buf[i]; i++) {
3959 src = &buf[i];
316e2bf4
DW		 3960 if (*src > 0x20) {
3961 /* ':' is reserved for use in placeholder serial
3962 * numbers for missing disks
3963 */
3964 if (*src == ':')
3965 *dest++ = ';';
3966 else
3967 *dest++ = *src;
3968 }
3969 }
21e9380b
AP		 3970 len = dest - buf;
3971 dest = buf;
316e2bf4
DW		 3972
3973 /* truncate leading characters */
3974 if (len > MAX_RAID_SERIAL_LEN) {
3975 dest += len - MAX_RAID_SERIAL_LEN;
1f24f035 3976 len = MAX_RAID_SERIAL_LEN;
316e2bf4 3977 }
5c3db629 3978
5c3db629 3979 memset(serial, 0, MAX_RAID_SERIAL_LEN);
316e2bf4 3980 memcpy(serial, dest, len);
cdddbdbc
DW		 3981
3982 return 0;
3983}
3984
1f24f035
DW		 3985static int serialcmp(__u8 *s1, __u8 *s2)
3986{
3987 return strncmp((char *) s1, (char *) s2, MAX_RAID_SERIAL_LEN);
3988}
3989
3990static void serialcpy(__u8 *dest, __u8 *src)
3991{
3992 strncpy((char *) dest, (char *) src, MAX_RAID_SERIAL_LEN);
3993}
3994
54c2c1ea
DW		 3995static struct dl *serial_to_dl(__u8 *serial, struct intel_super *super)
3996{
3997 struct dl *dl;
3998
3999 for (dl = super->disks; dl; dl = dl->next)
4000 if (serialcmp(dl->serial, serial) == 0)
4001 break;
4002
4003 return dl;
4004}
4005
a2b97981
DW		 4006static struct imsm_disk *
4007__serial_to_disk(__u8 *serial, struct imsm_super *mpb, int *idx)
4008{
4009 int i;
4010
4011 for (i = 0; i < mpb->num_disks; i++) {
4012 struct imsm_disk *disk = __get_imsm_disk(mpb, i);
4013
4014 if (serialcmp(disk->serial, serial) == 0) {
4015 if (idx)
4016 *idx = i;
4017 return disk;
4018 }
4019 }
4020
4021 return NULL;
4022}
4023
cdddbdbc
DW		 4024static int
4025load_imsm_disk(int fd, struct intel_super *super, char *devname, int keep_fd)
4026{
a2b97981 4027 struct imsm_disk *disk;
cdddbdbc
DW		 4028 struct dl *dl;
4029 struct stat stb;
cdddbdbc 4030 int rv;
a2b97981 4031 char name[40];
d23fe947
DW		 4032 __u8 serial[MAX_RAID_SERIAL_LEN];
4033
4034 rv = imsm_read_serial(fd, devname, serial);
4035
4036 if (rv != 0)
4037 return 2;
4038
503975b9 4039 dl = xcalloc(1, sizeof(*dl));
cdddbdbc 4040
a2b97981
DW		 4041 fstat(fd, &stb);
4042 dl->major = major(stb.st_rdev);
4043 dl->minor = minor(stb.st_rdev);
4044 dl->next = super->disks;
4045 dl->fd = keep_fd ? fd : -1;
4046 assert(super->disks == NULL);
4047 super->disks = dl;
4048 serialcpy(dl->serial, serial);
4049 dl->index = -2;
4050 dl->e = NULL;
4051 fd2devname(fd, name);
4052 if (devname)
503975b9 4053 dl->devname = xstrdup(devname);
a2b97981 4054 else
503975b9 4055 dl->devname = xstrdup(name);
cdddbdbc 4056
d23fe947 4057 /* look up this disk's index in the current anchor */
a2b97981
DW		 4058 disk = __serial_to_disk(dl->serial, super->anchor, &dl->index);
4059 if (disk) {
4060 dl->disk = *disk;
4061 /* only set index on disks that are a member of a
4062 * populated contianer, i.e. one with raid_devs
4063 */
4064 if (is_failed(&dl->disk))
3f6efecc 4065 dl->index = -2;
2432ce9b 4066 else if (is_spare(&dl->disk) || is_journal(&dl->disk))
a2b97981 4067 dl->index = -1;
3f6efecc
DW		 4068 }
4069
949c47a0
DW		 4070 return 0;
4071}
4072
0c046afd
DW		 4073/* When migrating map0 contains the 'destination' state while map1
4074 * contains the current state. When not migrating map0 contains the
4075 * current state. This routine assumes that map[0].map_state is set to
4076 * the current array state before being called.
4077 *
4078 * Migration is indicated by one of the following states
4079 * 1/ Idle (migr_state=0 map0state=normal||unitialized||degraded||failed)
e3bba0e0 4080 * 2/ Initialize (migr_state=1 migr_type=MIGR_INIT map0state=normal
0c046afd 4081 * map1state=unitialized)
1484e727 4082 * 3/ Repair (Resync) (migr_state=1 migr_type=MIGR_REPAIR map0state=normal
0c046afd 4083 * map1state=normal)
e3bba0e0 4084 * 4/ Rebuild (migr_state=1 migr_type=MIGR_REBUILD map0state=normal
0c046afd 4085 * map1state=degraded)
8e59f3d8
AK		 4086 * 5/ Migration (mig_state=1 migr_type=MIGR_GEN_MIGR map0state=normal
4087 * map1state=normal)
0c046afd 4088 */
8e59f3d8
AK		 4089static void migrate(struct imsm_dev *dev, struct intel_super *super,
4090 __u8 to_state, int migr_type)
3393c6af 4091{
0c046afd 4092 struct imsm_map *dest;
238c0a71 4093 struct imsm_map *src = get_imsm_map(dev, MAP_0);
3393c6af 4094
0c046afd 4095 dev->vol.migr_state = 1;
1484e727 4096 set_migr_type(dev, migr_type);
f8f603f1 4097 dev->vol.curr_migr_unit = 0;
238c0a71 4098 dest = get_imsm_map(dev, MAP_1);
0c046afd 4099
0556e1a2 4100 /* duplicate and then set the target end state in map[0] */
3393c6af 4101 memcpy(dest, src, sizeof_imsm_map(src));
fb12a745 4102 if (migr_type == MIGR_GEN_MIGR) {
0556e1a2
DW		 4103 __u32 ord;
4104 int i;
4105
4106 for (i = 0; i < src->num_members; i++) {
4107 ord = __le32_to_cpu(src->disk_ord_tbl[i]);
4108 set_imsm_ord_tbl_ent(src, i, ord_to_idx(ord));
4109 }
4110 }
4111
8e59f3d8
AK		 4112 if (migr_type == MIGR_GEN_MIGR)
4113 /* Clear migration record */
4114 memset(super->migr_rec, 0, sizeof(struct migr_record));
4115
0c046afd 4116 src->map_state = to_state;
949c47a0 4117}
f8f603f1 4118
809da78e
AK		 4119static void end_migration(struct imsm_dev *dev, struct intel_super *super,
4120 __u8 map_state)
f8f603f1 4121{
238c0a71
AK		 4122 struct imsm_map *map = get_imsm_map(dev, MAP_0);
4123 struct imsm_map *prev = get_imsm_map(dev, dev->vol.migr_state == 0 ?
4124 MAP_0 : MAP_1);
28bce06f 4125 int i, j;
0556e1a2
DW		 4126
4127 /* merge any IMSM_ORD_REBUILD bits that were not successfully
4128 * completed in the last migration.
4129 *
28bce06f 4130 * FIXME add support for raid-level-migration
0556e1a2 4131 */
089f9d79
JS		 4132 if (map_state != map->map_state && (is_gen_migration(dev) == 0) &&
4133 prev->map_state != IMSM_T_STATE_UNINITIALIZED) {
809da78e
AK		 4134 /* when final map state is other than expected
4135 * merge maps (not for migration)
4136 */
4137 int failed;
4138
4139 for (i = 0; i < prev->num_members; i++)
4140 for (j = 0; j < map->num_members; j++)
4141 /* during online capacity expansion
4142 * disks position can be changed
4143 * if takeover is used
4144 */
4145 if (ord_to_idx(map->disk_ord_tbl[j]) ==
4146 ord_to_idx(prev->disk_ord_tbl[i])) {
4147 map->disk_ord_tbl[j] |=
4148 prev->disk_ord_tbl[i];
4149 break;
4150 }
4151 failed = imsm_count_failed(super, dev, MAP_0);
4152 map_state = imsm_check_degraded(super, dev, failed, MAP_0);
4153 }
f8f603f1
DW		 4154
4155 dev->vol.migr_state = 0;
ea672ee1 4156 set_migr_type(dev, 0);
f8f603f1
DW		 4157 dev->vol.curr_migr_unit = 0;
4158 map->map_state = map_state;
4159}
949c47a0
DW		 4160
4161static int parse_raid_devices(struct intel_super *super)
4162{
4163 int i;
4164 struct imsm_dev *dev_new;
4d7b1503 4165 size_t len, len_migr;
401d313b 4166 size_t max_len = 0;
4d7b1503
DW		 4167 size_t space_needed = 0;
4168 struct imsm_super *mpb = super->anchor;
949c47a0
DW		 4169
4170 for (i = 0; i < super->anchor->num_raid_devs; i++) {
4171 struct imsm_dev *dev_iter = __get_imsm_dev(super->anchor, i);
ba2de7ba 4172 struct intel_dev *dv;
949c47a0 4173
4d7b1503
DW		 4174 len = sizeof_imsm_dev(dev_iter, 0);
4175 len_migr = sizeof_imsm_dev(dev_iter, 1);
4176 if (len_migr > len)
4177 space_needed += len_migr - len;
ca9de185 4178
503975b9 4179 dv = xmalloc(sizeof(*dv));
401d313b
AK		 4180 if (max_len < len_migr)
4181 max_len = len_migr;
4182 if (max_len > len_migr)
4183 space_needed += max_len - len_migr;
503975b9 4184 dev_new = xmalloc(max_len);
949c47a0 4185 imsm_copy_dev(dev_new, dev_iter);
ba2de7ba
DW		 4186 dv->dev = dev_new;
4187 dv->index = i;
4188 dv->next = super->devlist;
4189 super->devlist = dv;
949c47a0 4190 }
cdddbdbc 4191
4d7b1503
DW		 4192 /* ensure that super->buf is large enough when all raid devices
4193 * are migrating
4194 */
4195 if (__le32_to_cpu(mpb->mpb_size) + space_needed > super->len) {
4196 void *buf;
4197
f36a9ecd
PB		 4198 len = ROUND_UP(__le32_to_cpu(mpb->mpb_size) + space_needed,
4199 super->sector_size);
4200 if (posix_memalign(&buf, MAX_SECTOR_SIZE, len) != 0)
4d7b1503
DW		 4201 return 1;
4202
1f45a8ad
DW		 4203 memcpy(buf, super->buf, super->len);
4204 memset(buf + super->len, 0, len - super->len);
4d7b1503
DW		 4205 free(super->buf);
4206 super->buf = buf;
4207 super->len = len;
4208 }
ca9de185 4209
bbab0940
TM		 4210 super->extra_space += space_needed;
4211
cdddbdbc
DW		 4212 return 0;
4213}
4214
e2f41b2c
AK		 4215/*******************************************************************************
4216 * Function: check_mpb_migr_compatibility
4217 * Description: Function checks for unsupported migration features:
4218 * - migration optimization area (pba_of_lba0)
4219 * - descending reshape (ascending_migr)
4220 * Parameters:
4221 * super : imsm metadata information
4222 * Returns:
4223 * 0 : migration is compatible
4224 * -1 : migration is not compatible
4225 ******************************************************************************/
4226int check_mpb_migr_compatibility(struct intel_super *super)
4227{
4228 struct imsm_map *map0, *map1;
4229 struct migr_record *migr_rec = super->migr_rec;
4230 int i;
4231
4232 for (i = 0; i < super->anchor->num_raid_devs; i++) {
4233 struct imsm_dev *dev_iter = __get_imsm_dev(super->anchor, i);
4234
4235 if (dev_iter &&
4236 dev_iter->vol.migr_state == 1 &&
4237 dev_iter->vol.migr_type == MIGR_GEN_MIGR) {
4238 /* This device is migrating */
238c0a71
AK		 4239 map0 = get_imsm_map(dev_iter, MAP_0);
4240 map1 = get_imsm_map(dev_iter, MAP_1);
5551b113 4241 if (pba_of_lba0(map0) != pba_of_lba0(map1))
e2f41b2c
AK		 4242 /* migration optimization area was used */
4243 return -1;
fc54fe7a
JS		 4244 if (migr_rec->ascending_migr == 0 &&
4245 migr_rec->dest_depth_per_unit > 0)
e2f41b2c
AK		 4246 /* descending reshape not supported yet */
4247 return -1;
4248 }
4249 }
4250 return 0;
4251}
4252
d23fe947 4253static void __free_imsm(struct intel_super *super, int free_disks);
9ca2c81c 4254
cdddbdbc 4255/* load_imsm_mpb - read matrix metadata
f2f5c343 4256 * allocates super->mpb to be freed by free_imsm
cdddbdbc
DW		 4257 */
4258static int load_imsm_mpb(int fd, struct intel_super *super, char *devname)
4259{
4260 unsigned long long dsize;
cdddbdbc 4261 unsigned long long sectors;
f36a9ecd 4262 unsigned int sector_size = super->sector_size;
cdddbdbc 4263 struct stat;
6416d527 4264 struct imsm_super *anchor;
cdddbdbc
DW		 4265 __u32 check_sum;
4266
cdddbdbc 4267 get_dev_size(fd, NULL, &dsize);
f36a9ecd 4268 if (dsize < 2*sector_size) {
64436f06 4269 if (devname)
e7b84f9d
N		 4270 pr_err("%s: device to small for imsm\n",
4271 devname);
64436f06
N		 4272 return 1;
4273 }
cdddbdbc 4274
f36a9ecd 4275 if (lseek64(fd, dsize - (sector_size * 2), SEEK_SET) < 0) {
cdddbdbc 4276 if (devname)
e7b84f9d
N		 4277 pr_err("Cannot seek to anchor block on %s: %s\n",
4278 devname, strerror(errno));
cdddbdbc
DW		 4279 return 1;
4280 }
4281
f36a9ecd 4282 if (posix_memalign((void **)&anchor, sector_size, sector_size) != 0) {
ad97895e 4283 if (devname)
7a862a02 4284 pr_err("Failed to allocate imsm anchor buffer on %s\n", devname);
ad97895e
DW		 4285 return 1;
4286 }
466070ad 4287 if ((unsigned int)read(fd, anchor, sector_size) != sector_size) {
cdddbdbc 4288 if (devname)
e7b84f9d
N		 4289 pr_err("Cannot read anchor block on %s: %s\n",
4290 devname, strerror(errno));
6416d527 4291 free(anchor);
cdddbdbc
DW		 4292 return 1;
4293 }
4294
6416d527 4295 if (strncmp((char *) anchor->sig, MPB_SIGNATURE, MPB_SIG_LEN) != 0) {
cdddbdbc 4296 if (devname)
e7b84f9d 4297 pr_err("no IMSM anchor on %s\n", devname);
6416d527 4298 free(anchor);
cdddbdbc
DW		 4299 return 2;
4300 }
4301
d23fe947 4302 __free_imsm(super, 0);
f2f5c343
LM		 4303 /* reload capability and hba */
4304
4305 /* capability and hba must be updated with new super allocation */
d424212e 4306 find_intel_hba_capability(fd, super, devname);
f36a9ecd
PB		 4307 super->len = ROUND_UP(anchor->mpb_size, sector_size);
4308 if (posix_memalign(&super->buf, MAX_SECTOR_SIZE, super->len) != 0) {
cdddbdbc 4309 if (devname)
e7b84f9d
N		 4310 pr_err("unable to allocate %zu byte mpb buffer\n",
4311 super->len);
6416d527 4312 free(anchor);
cdddbdbc
DW		 4313 return 2;
4314 }
f36a9ecd 4315 memcpy(super->buf, anchor, sector_size);
cdddbdbc 4316
f36a9ecd 4317 sectors = mpb_sectors(anchor, sector_size) - 1;
6416d527 4318 free(anchor);
8e59f3d8 4319
85337573
AO		 4320 if (posix_memalign(&super->migr_rec_buf, MAX_SECTOR_SIZE,
4321 MIGR_REC_BUF_SECTORS*MAX_SECTOR_SIZE) != 0) {
1ade5cc1 4322 pr_err("could not allocate migr_rec buffer\n");
8e59f3d8
AK		 4323 free(super->buf);
4324 return 2;
4325 }
51d83f5d 4326 super->clean_migration_record_by_mdmon = 0;
8e59f3d8 4327
949c47a0 4328 if (!sectors) {
ecf45690
DW		 4329 check_sum = __gen_imsm_checksum(super->anchor);
4330 if (check_sum != __le32_to_cpu(super->anchor->check_sum)) {
4331 if (devname)
e7b84f9d
N		 4332 pr_err("IMSM checksum %x != %x on %s\n",
4333 check_sum,
4334 __le32_to_cpu(super->anchor->check_sum),
4335 devname);
ecf45690
DW		 4336 return 2;
4337 }
4338
a2b97981 4339 return 0;
949c47a0 4340 }
cdddbdbc
DW		 4341
4342 /* read the extended mpb */
f36a9ecd 4343 if (lseek64(fd, dsize - (sector_size * (2 + sectors)), SEEK_SET) < 0) {
cdddbdbc 4344 if (devname)
e7b84f9d
N		 4345 pr_err("Cannot seek to extended mpb on %s: %s\n",
4346 devname, strerror(errno));
cdddbdbc
DW		 4347 return 1;
4348 }
4349
f36a9ecd
PB		 4350 if ((unsigned int)read(fd, super->buf + sector_size,
4351 super->len - sector_size) != super->len - sector_size) {
cdddbdbc 4352 if (devname)
e7b84f9d
N		 4353 pr_err("Cannot read extended mpb on %s: %s\n",
4354 devname, strerror(errno));
cdddbdbc
DW		 4355 return 2;
4356 }
4357
949c47a0
DW		 4358 check_sum = __gen_imsm_checksum(super->anchor);
4359 if (check_sum != __le32_to_cpu(super->anchor->check_sum)) {
cdddbdbc 4360 if (devname)
e7b84f9d
N		 4361 pr_err("IMSM checksum %x != %x on %s\n",
4362 check_sum, __le32_to_cpu(super->anchor->check_sum),
4363 devname);
db575f3b 4364 return 3;
cdddbdbc
DW		 4365 }
4366
a2b97981
DW		 4367 return 0;
4368}
4369
8e59f3d8
AK		 4370static int read_imsm_migr_rec(int fd, struct intel_super *super);
4371
97f81ee2
CA		 4372/* clears hi bits in metadata if MPB_ATTRIB_2TB_DISK not set */
4373static void clear_hi(struct intel_super *super)
4374{
4375 struct imsm_super *mpb = super->anchor;
4376 int i, n;
4377 if (mpb->attributes & MPB_ATTRIB_2TB_DISK)
4378 return;
4379 for (i = 0; i < mpb->num_disks; ++i) {
4380 struct imsm_disk *disk = &mpb->disk[i];
4381 disk->total_blocks_hi = 0;
4382 }
4383 for (i = 0; i < mpb->num_raid_devs; ++i) {
4384 struct imsm_dev *dev = get_imsm_dev(super, i);
4385 if (!dev)
4386 return;
4387 for (n = 0; n < 2; ++n) {
4388 struct imsm_map *map = get_imsm_map(dev, n);
4389 if (!map)
4390 continue;
4391 map->pba_of_lba0_hi = 0;
4392 map->blocks_per_member_hi = 0;
4393 map->num_data_stripes_hi = 0;
4394 }
4395 }
4396}
4397
a2b97981
DW		 4398static int
4399load_and_parse_mpb(int fd, struct intel_super *super, char *devname, int keep_fd)
4400{
4401 int err;
4402
4403 err = load_imsm_mpb(fd, super, devname);
4404 if (err)
4405 return err;
f36a9ecd
PB		 4406 if (super->sector_size == 4096)
4407 convert_from_4k(super);
a2b97981
DW		 4408 err = load_imsm_disk(fd, super, devname, keep_fd);
4409 if (err)
4410 return err;
4411 err = parse_raid_devices(super);
8d67477f
TM		 4412 if (err)
4413 return err;
4414 err = load_bbm_log(super);
97f81ee2 4415 clear_hi(super);
a2b97981 4416 return err;
cdddbdbc
DW		 4417}
4418
ae6aad82
DW		 4419static void __free_imsm_disk(struct dl *d)
4420{
4421 if (d->fd >= 0)
4422 close(d->fd);
4423 if (d->devname)
4424 free(d->devname);
0dcecb2e
DW		 4425 if (d->e)
4426 free(d->e);
ae6aad82
DW		 4427 free(d);
4428
4429}
1a64be56 4430
cdddbdbc
DW		 4431static void free_imsm_disks(struct intel_super *super)
4432{
47ee5a45 4433 struct dl *d;
cdddbdbc 4434
47ee5a45
DW		 4435 while (super->disks) {
4436 d = super->disks;
cdddbdbc 4437 super->disks = d->next;
ae6aad82 4438 __free_imsm_disk(d);
cdddbdbc 4439 }
cb82edca
AK		 4440 while (super->disk_mgmt_list) {
4441 d = super->disk_mgmt_list;
4442 super->disk_mgmt_list = d->next;
4443 __free_imsm_disk(d);
4444 }
47ee5a45
DW		 4445 while (super->missing) {
4446 d = super->missing;
4447 super->missing = d->next;
4448 __free_imsm_disk(d);
4449 }
4450
cdddbdbc
DW		 4451}
4452
9ca2c81c 4453/* free all the pieces hanging off of a super pointer */
d23fe947 4454static void __free_imsm(struct intel_super *super, int free_disks)
cdddbdbc 4455{
88654014
LM		 4456 struct intel_hba *elem, *next;
4457
9ca2c81c 4458 if (super->buf) {
949c47a0 4459 free(super->buf);
9ca2c81c
DW		 4460 super->buf = NULL;
4461 }
f2f5c343
LM		 4462 /* unlink capability description */
4463 super->orom = NULL;
8e59f3d8
AK		 4464 if (super->migr_rec_buf) {
4465 free(super->migr_rec_buf);
4466 super->migr_rec_buf = NULL;
4467 }
d23fe947
DW		 4468 if (free_disks)
4469 free_imsm_disks(super);
ba2de7ba 4470 free_devlist(super);
88654014
LM		 4471 elem = super->hba;
4472 while (elem) {
4473 if (elem->path)
4474 free((void *)elem->path);
4475 next = elem->next;
4476 free(elem);
4477 elem = next;
88c32bb1 4478 }
8d67477f
TM		 4479 if (super->bbm_log)
4480 free(super->bbm_log);
88654014 4481 super->hba = NULL;
cdddbdbc
DW		 4482}
4483
9ca2c81c
DW		 4484static void free_imsm(struct intel_super *super)
4485{
d23fe947 4486 __free_imsm(super, 1);
928f1424 4487 free(super->bb.entries);
9ca2c81c
DW		 4488 free(super);
4489}
cdddbdbc
DW		 4490
4491static void free_super_imsm(struct supertype *st)
4492{
4493 struct intel_super *super = st->sb;
4494
4495 if (!super)
4496 return;
4497
4498 free_imsm(super);
4499 st->sb = NULL;
4500}
4501
49133e57 4502static struct intel_super *alloc_super(void)
c2c087e6 4503{
503975b9 4504 struct intel_super *super = xcalloc(1, sizeof(*super));
c2c087e6 4505
503975b9
N		 4506 super->current_vol = -1;
4507 super->create_offset = ~((unsigned long long) 0);
928f1424
TM		 4508
4509 super->bb.entries = xmalloc(BBM_LOG_MAX_ENTRIES *
4510 sizeof(struct md_bb_entry));
4511 if (!super->bb.entries) {
4512 free(super);
4513 return NULL;
4514 }
4515
c2c087e6
DW		 4516 return super;
4517}
4518
f0f5a016
LM		 4519/*
4520 * find and allocate hba and OROM/EFI based on valid fd of RAID component device
4521 */
d424212e 4522static int find_intel_hba_capability(int fd, struct intel_super *super, char *devname)
f0f5a016
LM		 4523{
4524 struct sys_dev *hba_name;
4525 int rv = 0;
4526
089f9d79 4527 if (fd < 0 || check_env("IMSM_NO_PLATFORM")) {
f2f5c343 4528 super->orom = NULL;
f0f5a016
LM		 4529 super->hba = NULL;
4530 return 0;
4531 }
4532 hba_name = find_disk_attached_hba(fd, NULL);
4533 if (!hba_name) {
d424212e 4534 if (devname)
e7b84f9d
N		 4535 pr_err("%s is not attached to Intel(R) RAID controller.\n",
4536 devname);
f0f5a016
LM		 4537 return 1;
4538 }
4539 rv = attach_hba_to_super(super, hba_name);
4540 if (rv == 2) {
d424212e
N		 4541 if (devname) {
4542 struct intel_hba *hba = super->hba;
f0f5a016 4543
60f0f54d
PB		 4544 pr_err("%s is attached to Intel(R) %s %s (%s),\n"
4545 " but the container is assigned to Intel(R) %s %s (",
d424212e 4546 devname,
614902f6 4547 get_sys_dev_type(hba_name->type),
60f0f54d 4548 hba_name->type == SYS_DEV_VMD ? "domain" : "RAID controller",
f0f5a016 4549 hba_name->pci_id ? : "Err!",
60f0f54d
PB		 4550 get_sys_dev_type(super->hba->type),
4551 hba->type == SYS_DEV_VMD ? "domain" : "RAID controller");
f0f5a016 4552
f0f5a016
LM		 4553 while (hba) {
4554 fprintf(stderr, "%s", hba->pci_id ? : "Err!");
4555 if (hba->next)
4556 fprintf(stderr, ", ");
4557 hba = hba->next;
4558 }
6b781d33 4559 fprintf(stderr, ").\n"
cca67208 4560 " Mixing devices attached to different controllers is not allowed.\n");
f0f5a016 4561 }
f0f5a016
LM		 4562 return 2;
4563 }
6b781d33 4564 super->orom = find_imsm_capability(hba_name);
f2f5c343
LM		 4565 if (!super->orom)
4566 return 3;
614902f6 4567
f0f5a016
LM		 4568 return 0;
4569}
4570
47ee5a45
DW		 4571/* find_missing - helper routine for load_super_imsm_all that identifies
4572 * disks that have disappeared from the system. This routine relies on
4573 * the mpb being uptodate, which it is at load time.
4574 */
4575static int find_missing(struct intel_super *super)
4576{
4577 int i;
4578 struct imsm_super *mpb = super->anchor;
4579 struct dl *dl;
4580 struct imsm_disk *disk;
47ee5a45
DW		 4581
4582 for (i = 0; i < mpb->num_disks; i++) {
4583 disk = __get_imsm_disk(mpb, i);
54c2c1ea 4584 dl = serial_to_dl(disk->serial, super);
47ee5a45
DW		 4585 if (dl)
4586 continue;
47ee5a45 4587
503975b9 4588 dl = xmalloc(sizeof(*dl));
47ee5a45
DW		 4589 dl->major = 0;
4590 dl->minor = 0;
4591 dl->fd = -1;
503975b9 4592 dl->devname = xstrdup("missing");
47ee5a45
DW		 4593 dl->index = i;
4594 serialcpy(dl->serial, disk->serial);
4595 dl->disk = *disk;
689c9bf3 4596 dl->e = NULL;
47ee5a45
DW		 4597 dl->next = super->missing;
4598 super->missing = dl;
4599 }
4600
4601 return 0;
4602}
4603
a2b97981
DW		 4604static struct intel_disk *disk_list_get(__u8 *serial, struct intel_disk *disk_list)
4605{
4606 struct intel_disk *idisk = disk_list;
4607
4608 while (idisk) {
4609 if (serialcmp(idisk->disk.serial, serial) == 0)
4610 break;
4611 idisk = idisk->next;
4612 }
4613
4614 return idisk;
4615}
4616
4617static int __prep_thunderdome(struct intel_super **table, int tbl_size,
4618 struct intel_super *super,
4619 struct intel_disk **disk_list)
4620{
4621 struct imsm_disk *d = &super->disks->disk;
4622 struct imsm_super *mpb = super->anchor;
4623 int i, j;
4624
4625 for (i = 0; i < tbl_size; i++) {
4626 struct imsm_super *tbl_mpb = table[i]->anchor;
4627 struct imsm_disk *tbl_d = &table[i]->disks->disk;
4628
4629 if (tbl_mpb->family_num == mpb->family_num) {
4630 if (tbl_mpb->check_sum == mpb->check_sum) {
1ade5cc1
N		 4631 dprintf("mpb from %d:%d matches %d:%d\n",
4632 super->disks->major,
a2b97981
DW		 4633 super->disks->minor,
4634 table[i]->disks->major,
4635 table[i]->disks->minor);
4636 break;
4637 }
4638
4639 if (((is_configured(d) && !is_configured(tbl_d)) ||
4640 is_configured(d) == is_configured(tbl_d)) &&
4641 tbl_mpb->generation_num < mpb->generation_num) {
4642 /* current version of the mpb is a
4643 * better candidate than the one in
4644 * super_table, but copy over "cross
4645 * generational" status
4646 */
4647 struct intel_disk *idisk;
4648
1ade5cc1
N		 4649 dprintf("mpb from %d:%d replaces %d:%d\n",
4650 super->disks->major,
a2b97981
DW		 4651 super->disks->minor,
4652 table[i]->disks->major,
4653 table[i]->disks->minor);
4654
4655 idisk = disk_list_get(tbl_d->serial, *disk_list);
4656 if (idisk && is_failed(&idisk->disk))
4657 tbl_d->status |= FAILED_DISK;
4658 break;
4659 } else {
4660 struct intel_disk *idisk;
4661 struct imsm_disk *disk;
4662
4663 /* tbl_mpb is more up to date, but copy
4664 * over cross generational status before
4665 * returning
4666 */
4667 disk = __serial_to_disk(d->serial, mpb, NULL);
4668 if (disk && is_failed(disk))
4669 d->status |= FAILED_DISK;
4670
4671 idisk = disk_list_get(d->serial, *disk_list);
4672 if (idisk) {
4673 idisk->owner = i;
4674 if (disk && is_configured(disk))
4675 idisk->disk.status |= CONFIGURED_DISK;
4676 }
4677
1ade5cc1
N		 4678 dprintf("mpb from %d:%d prefer %d:%d\n",
4679 super->disks->major,
a2b97981
DW		 4680 super->disks->minor,
4681 table[i]->disks->major,
4682 table[i]->disks->minor);
4683
4684 return tbl_size;
4685 }
4686 }
4687 }
4688
4689 if (i >= tbl_size)
4690 table[tbl_size++] = super;
4691 else
4692 table[i] = super;
4693
4694 /* update/extend the merged list of imsm_disk records */
4695 for (j = 0; j < mpb->num_disks; j++) {
4696 struct imsm_disk *disk = __get_imsm_disk(mpb, j);
4697 struct intel_disk *idisk;
4698
4699 idisk = disk_list_get(disk->serial, *disk_list);
4700 if (idisk) {
4701 idisk->disk.status |= disk->status;
4702 if (is_configured(&idisk->disk) ||
4703 is_failed(&idisk->disk))
4704 idisk->disk.status &= ~(SPARE_DISK);
4705 } else {
503975b9 4706 idisk = xcalloc(1, sizeof(*idisk));
a2b97981
DW		 4707 idisk->owner = IMSM_UNKNOWN_OWNER;
4708 idisk->disk = *disk;
4709 idisk->next = *disk_list;
4710 *disk_list = idisk;
4711 }
4712
4713 if (serialcmp(idisk->disk.serial, d->serial) == 0)
4714 idisk->owner = i;
4715 }
4716
4717 return tbl_size;
4718}
4719
4720static struct intel_super *
4721validate_members(struct intel_super *super, struct intel_disk *disk_list,
4722 const int owner)
4723{
4724 struct imsm_super *mpb = super->anchor;
4725 int ok_count = 0;
4726 int i;
4727
4728 for (i = 0; i < mpb->num_disks; i++) {
4729 struct imsm_disk *disk = __get_imsm_disk(mpb, i);
4730 struct intel_disk *idisk;
4731
4732 idisk = disk_list_get(disk->serial, disk_list);
4733 if (idisk) {
4734 if (idisk->owner == owner ||
4735 idisk->owner == IMSM_UNKNOWN_OWNER)
4736 ok_count++;
4737 else
1ade5cc1
N		 4738 dprintf("'%.16s' owner %d != %d\n",
4739 disk->serial, idisk->owner,
a2b97981
DW		 4740 owner);
4741 } else {
1ade5cc1
N		 4742 dprintf("unknown disk %x [%d]: %.16s\n",
4743 __le32_to_cpu(mpb->family_num), i,
a2b97981
DW		 4744 disk->serial);
4745 break;
4746 }
4747 }
4748
4749 if (ok_count == mpb->num_disks)
4750 return super;
4751 return NULL;
4752}
4753
4754static void show_conflicts(__u32 family_num, struct intel_super *super_list)
4755{
4756 struct intel_super *s;
4757
4758 for (s = super_list; s; s = s->next) {
4759 if (family_num != s->anchor->family_num)
4760 continue;
e12b3daa 4761 pr_err("Conflict, offlining family %#x on '%s'\n",
a2b97981
DW		 4762 __le32_to_cpu(family_num), s->disks->devname);
4763 }
4764}
4765
4766static struct intel_super *
4767imsm_thunderdome(struct intel_super **super_list, int len)
4768{
4769 struct intel_super *super_table[len];
4770 struct intel_disk *disk_list = NULL;
4771 struct intel_super *champion, *spare;
4772 struct intel_super *s, **del;
4773 int tbl_size = 0;
4774 int conflict;
4775 int i;
4776
4777 memset(super_table, 0, sizeof(super_table));
4778 for (s = *super_list; s; s = s->next)
4779 tbl_size = __prep_thunderdome(super_table, tbl_size, s, &disk_list);
4780
4781 for (i = 0; i < tbl_size; i++) {
4782 struct imsm_disk *d;
4783 struct intel_disk *idisk;
4784 struct imsm_super *mpb = super_table[i]->anchor;
4785
4786 s = super_table[i];
4787 d = &s->disks->disk;
4788
4789 /* 'd' must appear in merged disk list for its
4790 * configuration to be valid
4791 */
4792 idisk = disk_list_get(d->serial, disk_list);
4793 if (idisk && idisk->owner == i)
4794 s = validate_members(s, disk_list, i);
4795 else
4796 s = NULL;
4797
4798 if (!s)
1ade5cc1
N		 4799 dprintf("marking family: %#x from %d:%d offline\n",
4800 mpb->family_num,
a2b97981
DW		 4801 super_table[i]->disks->major,
4802 super_table[i]->disks->minor);
4803 super_table[i] = s;
4804 }
4805
4806 /* This is where the mdadm implementation differs from the Windows
4807 * driver which has no strict concept of a container. We can only
4808 * assemble one family from a container, so when returning a prodigal
4809 * array member to this system the code will not be able to disambiguate
4810 * the container contents that should be assembled ("foreign" versus
4811 * "local"). It requires user intervention to set the orig_family_num
4812 * to a new value to establish a new container. The Windows driver in
4813 * this situation fixes up the volume name in place and manages the
4814 * foreign array as an independent entity.
4815 */
4816 s = NULL;
4817 spare = NULL;
4818 conflict = 0;
4819 for (i = 0; i < tbl_size; i++) {
4820 struct intel_super *tbl_ent = super_table[i];
4821 int is_spare = 0;
4822
4823 if (!tbl_ent)
4824 continue;
4825
4826 if (tbl_ent->anchor->num_raid_devs == 0) {
4827 spare = tbl_ent;
4828 is_spare = 1;
4829 }
4830
4831 if (s && !is_spare) {
4832 show_conflicts(tbl_ent->anchor->family_num, *super_list);
4833 conflict++;
4834 } else if (!s && !is_spare)
4835 s = tbl_ent;
4836 }
4837
4838 if (!s)
4839 s = spare;
4840 if (!s) {
4841 champion = NULL;
4842 goto out;
4843 }
4844 champion = s;
4845
4846 if (conflict)
7a862a02 4847 pr_err("Chose family %#x on '%s', assemble conflicts to new container with '--update=uuid'\n",
a2b97981
DW		 4848 __le32_to_cpu(s->anchor->family_num), s->disks->devname);
4849
4850 /* collect all dl's onto 'champion', and update them to
4851 * champion's version of the status
4852 */
4853 for (s = *super_list; s; s = s->next) {
4854 struct imsm_super *mpb = champion->anchor;
4855 struct dl *dl = s->disks;
4856
4857 if (s == champion)
4858 continue;
4859
5d7b407a
CA		 4860 mpb->attributes |= s->anchor->attributes & MPB_ATTRIB_2TB_DISK;
4861
a2b97981
DW		 4862 for (i = 0; i < mpb->num_disks; i++) {
4863 struct imsm_disk *disk;
4864
4865 disk = __serial_to_disk(dl->serial, mpb, &dl->index);
4866 if (disk) {
4867 dl->disk = *disk;
4868 /* only set index on disks that are a member of
4869 * a populated contianer, i.e. one with
4870 * raid_devs
4871 */
4872 if (is_failed(&dl->disk))
4873 dl->index = -2;
4874 else if (is_spare(&dl->disk))
4875 dl->index = -1;
4876 break;
4877 }
4878 }
4879
4880 if (i >= mpb->num_disks) {
4881 struct intel_disk *idisk;
4882
4883 idisk = disk_list_get(dl->serial, disk_list);
ecf408e9 4884 if (idisk && is_spare(&idisk->disk) &&
a2b97981
DW		 4885 !is_failed(&idisk->disk) && !is_configured(&idisk->disk))
4886 dl->index = -1;
4887 else {
4888 dl->index = -2;
4889 continue;
4890 }
4891 }
4892
4893 dl->next = champion->disks;
4894 champion->disks = dl;
4895 s->disks = NULL;
4896 }
4897
4898 /* delete 'champion' from super_list */
4899 for (del = super_list; *del; ) {
4900 if (*del == champion) {
4901 *del = (*del)->next;
4902 break;
4903 } else
4904 del = &(*del)->next;
4905 }
4906 champion->next = NULL;
4907
4908 out:
4909 while (disk_list) {
4910 struct intel_disk *idisk = disk_list;
4911
4912 disk_list = disk_list->next;
4913 free(idisk);
4914 }
4915
4916 return champion;
4917}
4918
9587c373
LM		 4919static int
4920get_sra_super_block(int fd, struct intel_super **super_list, char *devname, int *max, int keep_fd);
4dd2df09 4921static int get_super_block(struct intel_super **super_list, char *devnm, char *devname,
9587c373 4922 int major, int minor, int keep_fd);
ec50f7b6
LM		 4923static int
4924get_devlist_super_block(struct md_list *devlist, struct intel_super **super_list,
4925 int *max, int keep_fd);
4926
cdddbdbc 4927static int load_super_imsm_all(struct supertype *st, int fd, void **sbp,
ec50f7b6
LM		 4928 char *devname, struct md_list *devlist,
4929 int keep_fd)
cdddbdbc 4930{
a2b97981
DW		 4931 struct intel_super *super_list = NULL;
4932 struct intel_super *super = NULL;
a2b97981 4933 int err = 0;
9587c373 4934 int i = 0;
dab4a513 4935
9587c373
LM		 4936 if (fd >= 0)
4937 /* 'fd' is an opened container */
4938 err = get_sra_super_block(fd, &super_list, devname, &i, keep_fd);
4939 else
ec50f7b6
LM		 4940 /* get super block from devlist devices */
4941 err = get_devlist_super_block(devlist, &super_list, &i, keep_fd);
9587c373 4942 if (err)
1602d52c 4943 goto error;
a2b97981
DW		 4944 /* all mpbs enter, maybe one leaves */
4945 super = imsm_thunderdome(&super_list, i);
4946 if (!super) {
4947 err = 1;
4948 goto error;
cdddbdbc
DW		 4949 }
4950
47ee5a45
DW		 4951 if (find_missing(super) != 0) {
4952 free_imsm(super);
a2b97981
DW		 4953 err = 2;
4954 goto error;
47ee5a45 4955 }
8e59f3d8
AK		 4956
4957 /* load migration record */
4958 err = load_imsm_migr_rec(super, NULL);
4c965cc9
AK		 4959 if (err == -1) {
4960 /* migration is in progress,
4961 * but migr_rec cannot be loaded,
4962 */
8e59f3d8
AK		 4963 err = 4;
4964 goto error;
4965 }
e2f41b2c
AK		 4966
4967 /* Check migration compatibility */
089f9d79 4968 if (err == 0 && check_mpb_migr_compatibility(super) != 0) {
e7b84f9d 4969 pr_err("Unsupported migration detected");
e2f41b2c
AK		 4970 if (devname)
4971 fprintf(stderr, " on %s\n", devname);
4972 else
4973 fprintf(stderr, " (IMSM).\n");
4974
4975 err = 5;
4976 goto error;
4977 }
4978
a2b97981
DW		 4979 err = 0;
4980
4981 error:
4982 while (super_list) {
4983 struct intel_super *s = super_list;
4984
4985 super_list = super_list->next;
4986 free_imsm(s);
4987 }
9587c373 4988
a2b97981
DW		 4989 if (err)
4990 return err;
f7e7067b 4991
cdddbdbc 4992 *sbp = super;
9587c373 4993 if (fd >= 0)
4dd2df09 4994 strcpy(st->container_devnm, fd2devnm(fd));
9587c373 4995 else
4dd2df09 4996 st->container_devnm[0] = 0;
a2b97981 4997 if (err == 0 && st->ss == NULL) {
bf5a934a 4998 st->ss = &super_imsm;
cdddbdbc
DW		 4999 st->minor_version = 0;
5000 st->max_devs = IMSM_MAX_DEVICES;
5001 }
cdddbdbc
DW		 5002 return 0;
5003}
2b959fbf 5004
ec50f7b6
LM		 5005static int
5006get_devlist_super_block(struct md_list *devlist, struct intel_super **super_list,
5007 int *max, int keep_fd)
5008{
5009 struct md_list *tmpdev;
5010 int err = 0;
5011 int i = 0;
9587c373 5012
ec50f7b6
LM		 5013 for (i = 0, tmpdev = devlist; tmpdev; tmpdev = tmpdev->next) {
5014 if (tmpdev->used != 1)
5015 continue;
5016 if (tmpdev->container == 1) {
ca9de185 5017 int lmax = 0;
ec50f7b6
LM		 5018 int fd = dev_open(tmpdev->devname, O_RDONLY|O_EXCL);
5019 if (fd < 0) {
e7b84f9d 5020 pr_err("cannot open device %s: %s\n",
ec50f7b6
LM		 5021 tmpdev->devname, strerror(errno));
5022 err = 8;
5023 goto error;
5024 }
5025 err = get_sra_super_block(fd, super_list,
5026 tmpdev->devname, &lmax,
5027 keep_fd);
5028 i += lmax;
5029 close(fd);
5030 if (err) {
5031 err = 7;
5032 goto error;
5033 }
5034 } else {
5035 int major = major(tmpdev->st_rdev);
5036 int minor = minor(tmpdev->st_rdev);
5037 err = get_super_block(super_list,
4dd2df09 5038 NULL,
ec50f7b6
LM		 5039 tmpdev->devname,
5040 major, minor,
5041 keep_fd);
5042 i++;
5043 if (err) {
5044 err = 6;
5045 goto error;
5046 }
5047 }
5048 }
5049 error:
5050 *max = i;
5051 return err;
5052}
9587c373 5053
4dd2df09 5054static int get_super_block(struct intel_super **super_list, char *devnm, char *devname,
9587c373
LM		 5055 int major, int minor, int keep_fd)
5056{
594dc1b8 5057 struct intel_super *s;
9587c373
LM		 5058 char nm[32];
5059 int dfd = -1;
9587c373
LM		 5060 int err = 0;
5061 int retry;
5062
5063 s = alloc_super();
5064 if (!s) {
5065 err = 1;
5066 goto error;
5067 }
5068
5069 sprintf(nm, "%d:%d", major, minor);
5070 dfd = dev_open(nm, O_RDWR);
5071 if (dfd < 0) {
5072 err = 2;
5073 goto error;
5074 }
5075
fa7bb6f8 5076 get_dev_sector_size(dfd, NULL, &s->sector_size);
cb8f6859 5077 find_intel_hba_capability(dfd, s, devname);
9587c373
LM		 5078 err = load_and_parse_mpb(dfd, s, NULL, keep_fd);
5079
5080 /* retry the load if we might have raced against mdmon */
4dd2df09 5081 if (err == 3 && devnm && mdmon_running(devnm))
9587c373
LM		 5082 for (retry = 0; retry < 3; retry++) {
5083 usleep(3000);
5084 err = load_and_parse_mpb(dfd, s, NULL, keep_fd);
5085 if (err != 3)
5086 break;
5087 }
5088 error:
5089 if (!err) {
5090 s->next = *super_list;
5091 *super_list = s;
5092 } else {
5093 if (s)
8d67477f 5094 free_imsm(s);
36614e95 5095 if (dfd >= 0)
9587c373
LM		 5096 close(dfd);
5097 }
089f9d79 5098 if (dfd >= 0 && !keep_fd)
9587c373
LM		 5099 close(dfd);
5100 return err;
5101
5102}
5103
5104static int
5105get_sra_super_block(int fd, struct intel_super **super_list, char *devname, int *max, int keep_fd)
5106{
5107 struct mdinfo *sra;
4dd2df09 5108 char *devnm;
9587c373
LM		 5109 struct mdinfo *sd;
5110 int err = 0;
5111 int i = 0;
4dd2df09 5112 sra = sysfs_read(fd, NULL, GET_LEVEL|GET_VERSION|GET_DEVS|GET_STATE);
9587c373
LM		 5113 if (!sra)
5114 return 1;
5115
5116 if (sra->array.major_version != -1 ||
5117 sra->array.minor_version != -2 ||
5118 strcmp(sra->text_version, "imsm") != 0) {
5119 err = 1;
5120 goto error;
5121 }
5122 /* load all mpbs */
4dd2df09 5123 devnm = fd2devnm(fd);
9587c373 5124 for (sd = sra->devs, i = 0; sd; sd = sd->next, i++) {
4dd2df09 5125 if (get_super_block(super_list, devnm, devname,
9587c373
LM		 5126 sd->disk.major, sd->disk.minor, keep_fd) != 0) {
5127 err = 7;
5128 goto error;
5129 }
5130 }
5131 error:
5132 sysfs_free(sra);
5133 *max = i;
5134 return err;
5135}
5136
2b959fbf
N		 5137static int load_container_imsm(struct supertype *st, int fd, char *devname)
5138{
ec50f7b6 5139 return load_super_imsm_all(st, fd, &st->sb, devname, NULL, 1);
2b959fbf 5140}
cdddbdbc
DW		 5141
5142static int load_super_imsm(struct supertype *st, int fd, char *devname)
5143{
5144 struct intel_super *super;
5145 int rv;
8a3544f8 5146 int retry;
cdddbdbc 5147
357ac106 5148 if (test_partition(fd))
691c6ee1
N		 5149 /* IMSM not allowed on partitions */
5150 return 1;
5151
37424f13
DW		 5152 free_super_imsm(st);
5153
49133e57 5154 super = alloc_super();
fa7bb6f8 5155 get_dev_sector_size(fd, NULL, &super->sector_size);
8d67477f
TM		 5156 if (!super)
5157 return 1;
ea2bc72b
LM		 5158 /* Load hba and capabilities if they exist.
5159 * But do not preclude loading metadata in case capabilities or hba are
5160 * non-compliant and ignore_hw_compat is set.
5161 */
d424212e 5162 rv = find_intel_hba_capability(fd, super, devname);
f2f5c343 5163 /* no orom/efi or non-intel hba of the disk */
089f9d79 5164 if (rv != 0 && st->ignore_hw_compat == 0) {
f2f5c343 5165 if (devname)
e7b84f9d 5166 pr_err("No OROM/EFI properties for %s\n", devname);
f2f5c343
LM		 5167 free_imsm(super);
5168 return 2;
5169 }
a2b97981 5170 rv = load_and_parse_mpb(fd, super, devname, 0);
cdddbdbc 5171
8a3544f8
AP		 5172 /* retry the load if we might have raced against mdmon */
5173 if (rv == 3) {
f96b1302
AP		 5174 struct mdstat_ent *mdstat = NULL;
5175 char *name = fd2kname(fd);
5176
5177 if (name)
5178 mdstat = mdstat_by_component(name);
8a3544f8
AP		 5179
5180 if (mdstat && mdmon_running(mdstat->devnm) && getpid() != mdmon_pid(mdstat->devnm)) {
5181 for (retry = 0; retry < 3; retry++) {
5182 usleep(3000);
5183 rv = load_and_parse_mpb(fd, super, devname, 0);
5184 if (rv != 3)
5185 break;
5186 }
5187 }
5188
5189 free_mdstat(mdstat);
5190 }
5191
cdddbdbc
DW		 5192 if (rv) {
5193 if (devname)
7a862a02 5194 pr_err("Failed to load all information sections on %s\n", devname);
cdddbdbc
DW		 5195 free_imsm(super);
5196 return rv;
5197 }
5198
5199 st->sb = super;
5200 if (st->ss == NULL) {
5201 st->ss = &super_imsm;
5202 st->minor_version = 0;
5203 st->max_devs = IMSM_MAX_DEVICES;
5204 }
8e59f3d8
AK		 5205
5206 /* load migration record */
2e062e82
AK		 5207 if (load_imsm_migr_rec(super, NULL) == 0) {
5208 /* Check for unsupported migration features */
5209 if (check_mpb_migr_compatibility(super) != 0) {
e7b84f9d 5210 pr_err("Unsupported migration detected");
2e062e82
AK		 5211 if (devname)
5212 fprintf(stderr, " on %s\n", devname);
5213 else
5214 fprintf(stderr, " (IMSM).\n");
5215 return 3;
5216 }
e2f41b2c
AK		 5217 }
5218
cdddbdbc
DW		 5219 return 0;
5220}
5221
ef6ffade
DW		 5222static __u16 info_to_blocks_per_strip(mdu_array_info_t *info)
5223{
5224 if (info->level == 1)
5225 return 128;
5226 return info->chunk_size >> 9;
5227}
5228
5551b113
CA		 5229static unsigned long long info_to_blocks_per_member(mdu_array_info_t *info,
5230 unsigned long long size)
fcfd9599 5231{
4025c288 5232 if (info->level == 1)
5551b113 5233 return size * 2;
4025c288 5234 else
5551b113 5235 return (size * 2) & ~(info_to_blocks_per_strip(info) - 1);
fcfd9599
DW		 5236}
5237
4d1313e9
DW		 5238static void imsm_update_version_info(struct intel_super *super)
5239{
5240 /* update the version and attributes */
5241 struct imsm_super *mpb = super->anchor;
5242 char *version;
5243 struct imsm_dev *dev;
5244 struct imsm_map *map;
5245 int i;
5246
5247 for (i = 0; i < mpb->num_raid_devs; i++) {
5248 dev = get_imsm_dev(super, i);
238c0a71 5249 map = get_imsm_map(dev, MAP_0);
4d1313e9
DW		 5250 if (__le32_to_cpu(dev->size_high) > 0)
5251 mpb->attributes |= MPB_ATTRIB_2TB;
5252
5253 /* FIXME detect when an array spans a port multiplier */
5254 #if 0
5255 mpb->attributes |= MPB_ATTRIB_PM;
5256 #endif
5257
5258 if (mpb->num_raid_devs > 1 ||
5259 mpb->attributes != MPB_ATTRIB_CHECKSUM_VERIFY) {
5260 version = MPB_VERSION_ATTRIBS;
5261 switch (get_imsm_raid_level(map)) {
5262 case 0: mpb->attributes |= MPB_ATTRIB_RAID0; break;
5263 case 1: mpb->attributes |= MPB_ATTRIB_RAID1; break;
5264 case 10: mpb->attributes |= MPB_ATTRIB_RAID10; break;
5265 case 5: mpb->attributes |= MPB_ATTRIB_RAID5; break;
5266 }
5267 } else {
5268 if (map->num_members >= 5)
5269 version = MPB_VERSION_5OR6_DISK_ARRAY;
5270 else if (dev->status == DEV_CLONE_N_GO)
5271 version = MPB_VERSION_CNG;
5272 else if (get_imsm_raid_level(map) == 5)
5273 version = MPB_VERSION_RAID5;
5274 else if (map->num_members >= 3)
5275 version = MPB_VERSION_3OR4_DISK_ARRAY;
5276 else if (get_imsm_raid_level(map) == 1)
5277 version = MPB_VERSION_RAID1;
5278 else
5279 version = MPB_VERSION_RAID0;
5280 }
5281 strcpy(((char *) mpb->sig) + strlen(MPB_SIGNATURE), version);
5282 }
5283}
5284
aa534678
DW		 5285static int check_name(struct intel_super *super, char *name, int quiet)
5286{
5287 struct imsm_super *mpb = super->anchor;
5288 char *reason = NULL;
5289 int i;
5290
5291 if (strlen(name) > MAX_RAID_SERIAL_LEN)
5292 reason = "must be 16 characters or less";
5293
5294 for (i = 0; i < mpb->num_raid_devs; i++) {
5295 struct imsm_dev *dev = get_imsm_dev(super, i);
5296
5297 if (strncmp((char *) dev->volume, name, MAX_RAID_SERIAL_LEN) == 0) {
5298 reason = "already exists";
5299 break;
5300 }
5301 }
5302
5303 if (reason && !quiet)
e7b84f9d 5304 pr_err("imsm volume name %s\n", reason);
aa534678
DW		 5305
5306 return !reason;
5307}
5308
8b353278 5309static int init_super_imsm_volume(struct supertype *st, mdu_array_info_t *info,
5308f117 5310 struct shape *s, char *name,
83cd1e97
N		 5311 char *homehost, int *uuid,
5312 long long data_offset)
cdddbdbc 5313{
c2c087e6
DW		 5314 /* We are creating a volume inside a pre-existing container.
5315 * so st->sb is already set.
5316 */
5317 struct intel_super *super = st->sb;
f36a9ecd 5318 unsigned int sector_size = super->sector_size;
949c47a0 5319 struct imsm_super *mpb = super->anchor;
ba2de7ba 5320 struct intel_dev *dv;
c2c087e6
DW		 5321 struct imsm_dev *dev;
5322 struct imsm_vol *vol;
5323 struct imsm_map *map;
5324 int idx = mpb->num_raid_devs;
5325 int i;
5326 unsigned long long array_blocks;
2c092cad 5327 size_t size_old, size_new;
5551b113 5328 unsigned long long num_data_stripes;
b53bfba6
TM		 5329 unsigned int data_disks;
5330 unsigned long long size_per_member;
cdddbdbc 5331
88c32bb1 5332 if (super->orom && mpb->num_raid_devs >= super->orom->vpa) {
7a862a02 5333 pr_err("This imsm-container already has the maximum of %d volumes\n", super->orom->vpa);
c2c087e6
DW		 5334 return 0;
5335 }
5336
2c092cad
DW		 5337 /* ensure the mpb is large enough for the new data */
5338 size_old = __le32_to_cpu(mpb->mpb_size);
5339 size_new = disks_to_mpb_size(info->nr_disks);
5340 if (size_new > size_old) {
5341 void *mpb_new;
f36a9ecd 5342 size_t size_round = ROUND_UP(size_new, sector_size);
2c092cad 5343
f36a9ecd 5344 if (posix_memalign(&mpb_new, sector_size, size_round) != 0) {
e7b84f9d 5345 pr_err("could not allocate new mpb\n");
2c092cad
DW		 5346 return 0;
5347 }
85337573
AO		 5348 if (posix_memalign(&super->migr_rec_buf, MAX_SECTOR_SIZE,
5349 MIGR_REC_BUF_SECTORS*
5350 MAX_SECTOR_SIZE) != 0) {
1ade5cc1 5351 pr_err("could not allocate migr_rec buffer\n");
8e59f3d8
AK		 5352 free(super->buf);
5353 free(super);
ea944c8f 5354 free(mpb_new);
8e59f3d8
AK		 5355 return 0;
5356 }
2c092cad
DW		 5357 memcpy(mpb_new, mpb, size_old);
5358 free(mpb);
5359 mpb = mpb_new;
949c47a0 5360 super->anchor = mpb_new;
2c092cad
DW		 5361 mpb->mpb_size = __cpu_to_le32(size_new);
5362 memset(mpb_new + size_old, 0, size_round - size_old);
bbab0940 5363 super->len = size_round;
2c092cad 5364 }
bf5a934a 5365 super->current_vol = idx;
3960e579
DW		 5366
5367 /* handle 'failed_disks' by either:
5368 * a) create dummy disk entries in the table if this the first
5369 * volume in the array. We add them here as this is the only
5370 * opportunity to add them. add_to_super_imsm_volume()
5371 * handles the non-failed disks and continues incrementing
5372 * mpb->num_disks.
5373 * b) validate that 'failed_disks' matches the current number
5374 * of missing disks if the container is populated
d23fe947 5375 */
3960e579 5376 if (super->current_vol == 0) {
d23fe947 5377 mpb->num_disks = 0;
3960e579
DW		 5378 for (i = 0; i < info->failed_disks; i++) {
5379 struct imsm_disk *disk;
5380
5381 mpb->num_disks++;
5382 disk = __get_imsm_disk(mpb, i);
5383 disk->status = CONFIGURED_DISK | FAILED_DISK;
5384 disk->scsi_id = __cpu_to_le32(~(__u32)0);
5385 snprintf((char *) disk->serial, MAX_RAID_SERIAL_LEN,
5b975129 5386 "missing:%d", (__u8)i);
3960e579
DW		 5387 }
5388 find_missing(super);
5389 } else {
5390 int missing = 0;
5391 struct dl *d;
5392
5393 for (d = super->missing; d; d = d->next)
5394 missing++;
5395 if (info->failed_disks > missing) {
e7b84f9d 5396 pr_err("unable to add 'missing' disk to container\n");
3960e579
DW		 5397 return 0;
5398 }
5399 }
5a038140 5400
aa534678
DW		 5401 if (!check_name(super, name, 0))
5402 return 0;
503975b9
N		 5403 dv = xmalloc(sizeof(*dv));
5404 dev = xcalloc(1, sizeof(*dev) + sizeof(__u32) * (info->raid_disks - 1));
c2c087e6 5405 strncpy((char *) dev->volume, name, MAX_RAID_SERIAL_LEN);
e03640bd 5406 array_blocks = calc_array_size(info->level, info->raid_disks,
03bcbc65 5407 info->layout, info->chunk_size,
b53bfba6
TM		 5408 s->size * BLOCKS_PER_KB);
5409 data_disks = get_data_disks(info->level, info->layout,
5410 info->raid_disks);
5411 array_blocks = round_size_to_mb(array_blocks, data_disks);
5412 size_per_member = array_blocks / data_disks;
979d38be 5413
fcc2c9da 5414 set_imsm_dev_size(dev, array_blocks);
1a2487c2 5415 dev->status = (DEV_READ_COALESCING | DEV_WRITE_COALESCING);
c2c087e6
DW		 5416 vol = &dev->vol;
5417 vol->migr_state = 0;
1484e727 5418 set_migr_type(dev, MIGR_INIT);
3960e579 5419 vol->dirty = !info->state;
f8f603f1 5420 vol->curr_migr_unit = 0;
238c0a71 5421 map = get_imsm_map(dev, MAP_0);
5551b113 5422 set_pba_of_lba0(map, super->create_offset);
ef6ffade 5423 map->blocks_per_strip = __cpu_to_le16(info_to_blocks_per_strip(info));
0556e1a2 5424 map->failed_disk_num = ~0;
bf4442ab 5425 if (info->level > 0)
fffaf1ff
N		 5426 map->map_state = (info->state ? IMSM_T_STATE_NORMAL
5427 : IMSM_T_STATE_UNINITIALIZED);
bf4442ab
AK		 5428 else
5429 map->map_state = info->failed_disks ? IMSM_T_STATE_FAILED :
5430 IMSM_T_STATE_NORMAL;
252d23c0 5431 map->ddf = 1;
ef6ffade
DW		 5432
5433 if (info->level == 1 && info->raid_disks > 2) {
38950822
AW		 5434 free(dev);
5435 free(dv);
7a862a02 5436 pr_err("imsm does not support more than 2 disksin a raid1 volume\n");
ef6ffade
DW		 5437 return 0;
5438 }
81062a36
DW		 5439
5440 map->raid_level = info->level;
4d1313e9 5441 if (info->level == 10) {
c2c087e6 5442 map->raid_level = 1;
4d1313e9 5443 map->num_domains = info->raid_disks / 2;
81062a36
DW		 5444 } else if (info->level == 1)
5445 map->num_domains = info->raid_disks;
5446 else
ff596308 5447 map->num_domains = 1;
81062a36 5448
5551b113 5449 /* info->size is only int so use the 'size' parameter instead */
b53bfba6 5450 num_data_stripes = size_per_member / info_to_blocks_per_strip(info);
5551b113
CA		 5451 num_data_stripes /= map->num_domains;
5452 set_num_data_stripes(map, num_data_stripes);
ef6ffade 5453
44490938
MD		 5454 size_per_member += NUM_BLOCKS_DIRTY_STRIPE_REGION;
5455 set_blocks_per_member(map, info_to_blocks_per_member(info,
5456 size_per_member /
5457 BLOCKS_PER_KB));
5458
c2c087e6
DW		 5459 map->num_members = info->raid_disks;
5460 for (i = 0; i < map->num_members; i++) {
5461 /* initialized in add_to_super */
4eb26970 5462 set_imsm_ord_tbl_ent(map, i, IMSM_ORD_REBUILD);
c2c087e6 5463 }
949c47a0 5464 mpb->num_raid_devs++;
2a24dc1b
PB		 5465 mpb->num_raid_devs_created++;
5466 dev->my_vol_raid_dev_num = mpb->num_raid_devs_created;
ba2de7ba 5467
b7580566 5468 if (s->consistency_policy <= CONSISTENCY_POLICY_RESYNC) {
c2462068 5469 dev->rwh_policy = RWH_MULTIPLE_OFF;
2432ce9b 5470 } else if (s->consistency_policy == CONSISTENCY_POLICY_PPL) {
c2462068 5471 dev->rwh_policy = RWH_MULTIPLE_DISTRIBUTED;
2432ce9b
AP		 5472 } else {
5473 free(dev);
5474 free(dv);
5475 pr_err("imsm does not support consistency policy %s\n",
5476 map_num(consistency_policies, s->consistency_policy));
5477 return 0;
5478 }
5479
ba2de7ba
DW		 5480 dv->dev = dev;
5481 dv->index = super->current_vol;
5482 dv->next = super->devlist;
5483 super->devlist = dv;
c2c087e6 5484
4d1313e9
DW		 5485 imsm_update_version_info(super);
5486
c2c087e6 5487 return 1;
cdddbdbc
DW		 5488}
5489
bf5a934a 5490static int init_super_imsm(struct supertype *st, mdu_array_info_t *info,
5308f117 5491 struct shape *s, char *name,
83cd1e97
N		 5492 char *homehost, int *uuid,
5493 unsigned long long data_offset)
bf5a934a
DW		 5494{
5495 /* This is primarily called by Create when creating a new array.
5496 * We will then get add_to_super called for each component, and then
5497 * write_init_super called to write it out to each device.
5498 * For IMSM, Create can create on fresh devices or on a pre-existing
5499 * array.
5500 * To create on a pre-existing array a different method will be called.
5501 * This one is just for fresh drives.
5502 */
5503 struct intel_super *super;
5504 struct imsm_super *mpb;
5505 size_t mpb_size;
4d1313e9 5506 char *version;
bf5a934a 5507
83cd1e97 5508 if (data_offset != INVALID_SECTORS) {
ed503f89 5509 pr_err("data-offset not supported by imsm\n");
83cd1e97
N		 5510 return 0;
5511 }
5512
bf5a934a 5513 if (st->sb)
5308f117 5514 return init_super_imsm_volume(st, info, s, name, homehost, uuid,
83cd1e97 5515 data_offset);
e683ca88
DW		 5516
5517 if (info)
5518 mpb_size = disks_to_mpb_size(info->nr_disks);
5519 else
f36a9ecd 5520 mpb_size = MAX_SECTOR_SIZE;
bf5a934a 5521
49133e57 5522 super = alloc_super();
f36a9ecd
PB		 5523 if (super &&
5524 posix_memalign(&super->buf, MAX_SECTOR_SIZE, mpb_size) != 0) {
8d67477f 5525 free_imsm(super);
e683ca88
DW		 5526 super = NULL;
5527 }
5528 if (!super) {
1ade5cc1 5529 pr_err("could not allocate superblock\n");
bf5a934a
DW		 5530 return 0;
5531 }
de44e46f
PB		 5532 if (posix_memalign(&super->migr_rec_buf, MAX_SECTOR_SIZE,
5533 MIGR_REC_BUF_SECTORS*MAX_SECTOR_SIZE) != 0) {
1ade5cc1 5534 pr_err("could not allocate migr_rec buffer\n");
8e59f3d8 5535 free(super->buf);
8d67477f 5536 free_imsm(super);
8e59f3d8
AK		 5537 return 0;
5538 }
e683ca88 5539 memset(super->buf, 0, mpb_size);
ef649044 5540 mpb = super->buf;
e683ca88
DW		 5541 mpb->mpb_size = __cpu_to_le32(mpb_size);
5542 st->sb = super;
5543
5544 if (info == NULL) {
5545 /* zeroing superblock */
5546 return 0;
5547 }
bf5a934a 5548
4d1313e9
DW		 5549 mpb->attributes = MPB_ATTRIB_CHECKSUM_VERIFY;
5550
5551 version = (char *) mpb->sig;
5552 strcpy(version, MPB_SIGNATURE);
5553 version += strlen(MPB_SIGNATURE);
5554 strcpy(version, MPB_VERSION_RAID0);
bf5a934a 5555
bf5a934a
DW		 5556 return 1;
5557}
5558
f2cc4f7d
AO		 5559static int drive_validate_sector_size(struct intel_super *super, struct dl *dl)
5560{
5561 unsigned int member_sector_size;
5562
5563 if (dl->fd < 0) {
5564 pr_err("Invalid file descriptor for %s\n", dl->devname);
5565 return 0;
5566 }
5567
5568 if (!get_dev_sector_size(dl->fd, dl->devname, &member_sector_size))
5569 return 0;
5570 if (member_sector_size != super->sector_size)
5571 return 0;
5572 return 1;
5573}
5574
f20c3968 5575static int add_to_super_imsm_volume(struct supertype *st, mdu_disk_info_t *dk,
bf5a934a
DW		 5576 int fd, char *devname)
5577{
5578 struct intel_super *super = st->sb;
d23fe947 5579 struct imsm_super *mpb = super->anchor;
3960e579 5580 struct imsm_disk *_disk;
bf5a934a
DW		 5581 struct imsm_dev *dev;
5582 struct imsm_map *map;
3960e579 5583 struct dl *dl, *df;
4eb26970 5584 int slot;
bf5a934a 5585
949c47a0 5586 dev = get_imsm_dev(super, super->current_vol);
238c0a71 5587 map = get_imsm_map(dev, MAP_0);
bf5a934a 5588
208933a7 5589 if (! (dk->state & (1<<MD_DISK_SYNC))) {
e7b84f9d 5590 pr_err("%s: Cannot add spare devices to IMSM volume\n",
208933a7
N		 5591 devname);
5592 return 1;
5593 }
5594
efb30e7f
DW		 5595 if (fd == -1) {
5596 /* we're doing autolayout so grab the pre-marked (in
5597 * validate_geometry) raid_disk
5598 */
5599 for (dl = super->disks; dl; dl = dl->next)
5600 if (dl->raiddisk == dk->raid_disk)
5601 break;
5602 } else {
5603 for (dl = super->disks; dl ; dl = dl->next)
5604 if (dl->major == dk->major &&
5605 dl->minor == dk->minor)
5606 break;
5607 }
d23fe947 5608
208933a7 5609 if (!dl) {
e7b84f9d 5610 pr_err("%s is not a member of the same container\n", devname);
f20c3968 5611 return 1;
208933a7 5612 }
bf5a934a 5613
f2cc4f7d
AO		 5614 if (!drive_validate_sector_size(super, dl)) {
5615 pr_err("Combining drives of different sector size in one volume is not allowed\n");
5616 return 1;
5617 }
5618
d23fe947
DW		 5619 /* add a pristine spare to the metadata */
5620 if (dl->index < 0) {
5621 dl->index = super->anchor->num_disks;
5622 super->anchor->num_disks++;
5623 }
4eb26970
DW		 5624 /* Check the device has not already been added */
5625 slot = get_imsm_disk_slot(map, dl->index);
5626 if (slot >= 0 &&
238c0a71 5627 (get_imsm_ord_tbl_ent(dev, slot, MAP_X) & IMSM_ORD_REBUILD) == 0) {
e7b84f9d 5628 pr_err("%s has been included in this array twice\n",
4eb26970
DW		 5629 devname);
5630 return 1;
5631 }
656b6b5a 5632 set_imsm_ord_tbl_ent(map, dk->raid_disk, dl->index);
ee5aad5a 5633 dl->disk.status = CONFIGURED_DISK;
d23fe947 5634
3960e579
DW		 5635 /* update size of 'missing' disks to be at least as large as the
5636 * largest acitve member (we only have dummy missing disks when
5637 * creating the first volume)
5638 */
5639 if (super->current_vol == 0) {
5640 for (df = super->missing; df; df = df->next) {
5551b113
CA		 5641 if (total_blocks(&dl->disk) > total_blocks(&df->disk))
5642 set_total_blocks(&df->disk, total_blocks(&dl->disk));
3960e579
DW		 5643 _disk = __get_imsm_disk(mpb, df->index);
5644 *_disk = df->disk;
5645 }
5646 }
5647
5648 /* refresh unset/failed slots to point to valid 'missing' entries */
5649 for (df = super->missing; df; df = df->next)
5650 for (slot = 0; slot < mpb->num_disks; slot++) {
238c0a71 5651 __u32 ord = get_imsm_ord_tbl_ent(dev, slot, MAP_X);
3960e579
DW		 5652
5653 if ((ord & IMSM_ORD_REBUILD) == 0)
5654 continue;
5655 set_imsm_ord_tbl_ent(map, slot, df->index | IMSM_ORD_REBUILD);
1ace8403 5656 if (is_gen_migration(dev)) {
238c0a71
AK		 5657 struct imsm_map *map2 = get_imsm_map(dev,
5658 MAP_1);
0a108d63 5659 int slot2 = get_imsm_disk_slot(map2, df->index);
089f9d79 5660 if (slot2 < map2->num_members && slot2 >= 0) {
1ace8403 5661 __u32 ord2 = get_imsm_ord_tbl_ent(dev,
238c0a71
AK		 5662 slot2,
5663 MAP_1);
1ace8403
AK		 5664 if ((unsigned)df->index ==
5665 ord_to_idx(ord2))
5666 set_imsm_ord_tbl_ent(map2,
0a108d63 5667 slot2,
1ace8403
AK		 5668 df->index |
5669 IMSM_ORD_REBUILD);
5670 }
5671 }
3960e579
DW		 5672 dprintf("set slot:%d to missing disk:%d\n", slot, df->index);
5673 break;
5674 }
5675
d23fe947
DW		 5676 /* if we are creating the first raid device update the family number */
5677 if (super->current_vol == 0) {
5678 __u32 sum;
5679 struct imsm_dev *_dev = __get_imsm_dev(mpb, 0);
d23fe947 5680
3960e579 5681 _disk = __get_imsm_disk(mpb, dl->index);
791b666a 5682 if (!_dev || !_disk) {
e7b84f9d 5683 pr_err("BUG mpb setup error\n");
791b666a
AW		 5684 return 1;
5685 }
d23fe947
DW		 5686 *_dev = *dev;
5687 *_disk = dl->disk;
148acb7b
DW		 5688 sum = random32();
5689 sum += __gen_imsm_checksum(mpb);
d23fe947 5690 mpb->family_num = __cpu_to_le32(sum);
148acb7b 5691 mpb->orig_family_num = mpb->family_num;
d23fe947 5692 }
ca0748fa 5693 super->current_disk = dl;
f20c3968 5694 return 0;
bf5a934a
DW		 5695}
5696
a8619d23
AK		 5697/* mark_spare()
5698 * Function marks disk as spare and restores disk serial
5699 * in case it was previously marked as failed by takeover operation
5700 * reruns:
5701 * -1 : critical error
5702 * 0 : disk is marked as spare but serial is not set
5703 * 1 : success
5704 */
5705int mark_spare(struct dl *disk)
5706{
5707 __u8 serial[MAX_RAID_SERIAL_LEN];
5708 int ret_val = -1;
5709
5710 if (!disk)
5711 return ret_val;
5712
5713 ret_val = 0;
5714 if (!imsm_read_serial(disk->fd, NULL, serial)) {
5715 /* Restore disk serial number, because takeover marks disk
5716 * as failed and adds to serial ':0' before it becomes
5717 * a spare disk.
5718 */
5719 serialcpy(disk->serial, serial);
5720 serialcpy(disk->disk.serial, serial);
5721 ret_val = 1;
5722 }
5723 disk->disk.status = SPARE_DISK;
5724 disk->index = -1;
5725
5726 return ret_val;
5727}
88654014 5728
f20c3968 5729static int add_to_super_imsm(struct supertype *st, mdu_disk_info_t *dk,
72ca9bcf
N		 5730 int fd, char *devname,
5731 unsigned long long data_offset)
cdddbdbc 5732{
c2c087e6 5733 struct intel_super *super = st->sb;
c2c087e6
DW		 5734 struct dl *dd;
5735 unsigned long long size;
fa7bb6f8 5736 unsigned int member_sector_size;
f2f27e63 5737 __u32 id;
c2c087e6
DW		 5738 int rv;
5739 struct stat stb;
5740
88654014
LM		 5741 /* If we are on an RAID enabled platform check that the disk is
5742 * attached to the raid controller.
5743 * We do not need to test disks attachment for container based additions,
5744 * they shall be already tested when container was created/assembled.
88c32bb1 5745 */
d424212e 5746 rv = find_intel_hba_capability(fd, super, devname);
f2f5c343 5747 /* no orom/efi or non-intel hba of the disk */
f0f5a016
LM		 5748 if (rv != 0) {
5749 dprintf("capability: %p fd: %d ret: %d\n",
5750 super->orom, fd, rv);
5751 return 1;
88c32bb1
DW		 5752 }
5753
f20c3968
DW		 5754 if (super->current_vol >= 0)
5755 return add_to_super_imsm_volume(st, dk, fd, devname);
bf5a934a 5756
c2c087e6 5757 fstat(fd, &stb);
503975b9 5758 dd = xcalloc(sizeof(*dd), 1);
c2c087e6
DW		 5759 dd->major = major(stb.st_rdev);
5760 dd->minor = minor(stb.st_rdev);
503975b9 5761 dd->devname = devname ? xstrdup(devname) : NULL;
c2c087e6 5762 dd->fd = fd;
689c9bf3 5763 dd->e = NULL;
1a64be56 5764 dd->action = DISK_ADD;
c2c087e6 5765 rv = imsm_read_serial(fd, devname, dd->serial);
32ba9157 5766 if (rv) {
e7b84f9d 5767 pr_err("failed to retrieve scsi serial, aborting\n");
20bee0f8
PB		 5768 if (dd->devname)
5769 free(dd->devname);
949c47a0 5770 free(dd);
0030e8d6 5771 abort();
c2c087e6 5772 }
20bee0f8
PB		 5773 if (super->hba && ((super->hba->type == SYS_DEV_NVME) ||
5774 (super->hba->type == SYS_DEV_VMD))) {
5775 int i;
5776 char *devpath = diskfd_to_devpath(fd);
5777 char controller_path[PATH_MAX];
5778
5779 if (!devpath) {
5780 pr_err("failed to get devpath, aborting\n");
5781 if (dd->devname)
5782 free(dd->devname);
5783 free(dd);
5784 return 1;
5785 }
5786
5787 snprintf(controller_path, PATH_MAX-1, "%s/device", devpath);
5788 free(devpath);
5789
5790 if (devpath_to_vendor(controller_path) == 0x8086) {
5791 /*
5792 * If Intel's NVMe drive has serial ended with
5793 * "-A","-B","-1" or "-2" it means that this is "x8"
5794 * device (double drive on single PCIe card).
5795 * User should be warned about potential data loss.
5796 */
5797 for (i = MAX_RAID_SERIAL_LEN-1; i > 0; i--) {
5798 /* Skip empty character at the end */
5799 if (dd->serial[i] == 0)
5800 continue;
5801
5802 if (((dd->serial[i] == 'A') ||
5803 (dd->serial[i] == 'B') ||
5804 (dd->serial[i] == '1') ||
5805 (dd->serial[i] == '2')) &&
5806 (dd->serial[i-1] == '-'))
5807 pr_err("\tThe action you are about to take may put your data at risk.\n"
5808 "\tPlease note that x8 devices may consist of two separate x4 devices "
5809 "located on a single PCIe port.\n"
5810 "\tRAID 0 is the only supported configuration for this type of x8 device.\n");
5811 break;
5812 }
32716c51
PB		 5813 } else if (super->hba->type == SYS_DEV_VMD && super->orom &&
5814 !imsm_orom_has_tpv_support(super->orom)) {
5815 pr_err("\tPlatform configuration does not support non-Intel NVMe drives.\n"
8b751247 5816 "\tPlease refer to Intel(R) RSTe/VROC user guide.\n");
32716c51
PB		 5817 free(dd->devname);
5818 free(dd);
5819 return 1;
20bee0f8
PB		 5820 }
5821 }
c2c087e6 5822
c2c087e6 5823 get_dev_size(fd, NULL, &size);
fa7bb6f8
PB		 5824 get_dev_sector_size(fd, NULL, &member_sector_size);
5825
5826 if (super->sector_size == 0) {
5827 /* this a first device, so sector_size is not set yet */
5828 super->sector_size = member_sector_size;
fa7bb6f8
PB		 5829 }
5830
71e5411e 5831 /* clear migr_rec when adding disk to container */
85337573
AO		 5832 memset(super->migr_rec_buf, 0, MIGR_REC_BUF_SECTORS*MAX_SECTOR_SIZE);
5833 if (lseek64(fd, size - MIGR_REC_SECTOR_POSITION*member_sector_size,
de44e46f 5834 SEEK_SET) >= 0) {
466070ad 5835 if ((unsigned int)write(fd, super->migr_rec_buf,
85337573
AO		 5836 MIGR_REC_BUF_SECTORS*member_sector_size) !=
5837 MIGR_REC_BUF_SECTORS*member_sector_size)
71e5411e
PB		 5838 perror("Write migr_rec failed");
5839 }
5840
c2c087e6 5841 size /= 512;
1f24f035 5842 serialcpy(dd->disk.serial, dd->serial);
5551b113
CA		 5843 set_total_blocks(&dd->disk, size);
5844 if (__le32_to_cpu(dd->disk.total_blocks_hi) > 0) {
5845 struct imsm_super *mpb = super->anchor;
5846 mpb->attributes |= MPB_ATTRIB_2TB_DISK;
5847 }
a8619d23 5848 mark_spare(dd);
c2c087e6 5849 if (sysfs_disk_to_scsi_id(fd, &id) == 0)
b9f594fe 5850 dd->disk.scsi_id = __cpu_to_le32(id);
c2c087e6 5851 else
b9f594fe 5852 dd->disk.scsi_id = __cpu_to_le32(0);
43dad3d6
DW		 5853
5854 if (st->update_tail) {
1a64be56
LM		 5855 dd->next = super->disk_mgmt_list;
5856 super->disk_mgmt_list = dd;
43dad3d6
DW		 5857 } else {
5858 dd->next = super->disks;
5859 super->disks = dd;
ceaf0ee1 5860 super->updates_pending++;
43dad3d6 5861 }
f20c3968
DW		 5862
5863 return 0;
cdddbdbc
DW		 5864}
5865
1a64be56
LM		 5866static int remove_from_super_imsm(struct supertype *st, mdu_disk_info_t *dk)
5867{
5868 struct intel_super *super = st->sb;
5869 struct dl *dd;
5870
5871 /* remove from super works only in mdmon - for communication
5872 * manager - monitor. Check if communication memory buffer
5873 * is prepared.
5874 */
5875 if (!st->update_tail) {
1ade5cc1 5876 pr_err("shall be used in mdmon context only\n");
1a64be56
LM		 5877 return 1;
5878 }
503975b9 5879 dd = xcalloc(1, sizeof(*dd));
1a64be56
LM		 5880 dd->major = dk->major;
5881 dd->minor = dk->minor;
1a64be56 5882 dd->fd = -1;
a8619d23 5883 mark_spare(dd);
1a64be56
LM		 5884 dd->action = DISK_REMOVE;
5885
5886 dd->next = super->disk_mgmt_list;
5887 super->disk_mgmt_list = dd;
5888
1a64be56
LM		 5889 return 0;
5890}
5891
f796af5d
DW		 5892static int store_imsm_mpb(int fd, struct imsm_super *mpb);
5893
5894static union {
f36a9ecd 5895 char buf[MAX_SECTOR_SIZE];
f796af5d 5896 struct imsm_super anchor;
f36a9ecd 5897} spare_record __attribute__ ((aligned(MAX_SECTOR_SIZE)));
c2c087e6 5898
d23fe947
DW		 5899/* spare records have their own family number and do not have any defined raid
5900 * devices
5901 */
5902static int write_super_imsm_spares(struct intel_super *super, int doclose)
5903{
d23fe947 5904 struct imsm_super *mpb = super->anchor;
f796af5d 5905 struct imsm_super *spare = &spare_record.anchor;
d23fe947
DW		 5906 __u32 sum;
5907 struct dl *d;
5908
68641cdb
JS		 5909 spare->mpb_size = __cpu_to_le32(sizeof(struct imsm_super));
5910 spare->generation_num = __cpu_to_le32(1UL);
f796af5d 5911 spare->attributes = MPB_ATTRIB_CHECKSUM_VERIFY;
68641cdb
JS		 5912 spare->num_disks = 1;
5913 spare->num_raid_devs = 0;
5914 spare->cache_size = mpb->cache_size;
5915 spare->pwr_cycle_count = __cpu_to_le32(1);
f796af5d
DW		 5916
5917 snprintf((char *) spare->sig, MAX_SIGNATURE_LENGTH,
5918 MPB_SIGNATURE MPB_VERSION_RAID0);
d23fe947
DW		 5919
5920 for (d = super->disks; d; d = d->next) {
8796fdc4 5921 if (d->index != -1)
d23fe947
DW		 5922 continue;
5923
f796af5d 5924 spare->disk[0] = d->disk;
027c374f
CA		 5925 if (__le32_to_cpu(d->disk.total_blocks_hi) > 0)
5926 spare->attributes |= MPB_ATTRIB_2TB_DISK;
5927
f36a9ecd
PB		 5928 if (super->sector_size == 4096)
5929 convert_to_4k_imsm_disk(&spare->disk[0]);
5930
f796af5d
DW		 5931 sum = __gen_imsm_checksum(spare);
5932 spare->family_num = __cpu_to_le32(sum);
5933 spare->orig_family_num = 0;
5934 sum = __gen_imsm_checksum(spare);
5935 spare->check_sum = __cpu_to_le32(sum);
d23fe947 5936
f796af5d 5937 if (store_imsm_mpb(d->fd, spare)) {
1ade5cc1
N		 5938 pr_err("failed for device %d:%d %s\n",
5939 d->major, d->minor, strerror(errno));
e74255d9 5940 return 1;
d23fe947
DW		 5941 }
5942 if (doclose) {
5943 close(d->fd);
5944 d->fd = -1;
5945 }
5946 }
5947
e74255d9 5948 return 0;
d23fe947
DW		 5949}
5950
36988a3d 5951static int write_super_imsm(struct supertype *st, int doclose)
cdddbdbc 5952{
36988a3d 5953 struct intel_super *super = st->sb;
f36a9ecd 5954 unsigned int sector_size = super->sector_size;
949c47a0 5955 struct imsm_super *mpb = super->anchor;
c2c087e6
DW		 5956 struct dl *d;
5957 __u32 generation;
5958 __u32 sum;
d23fe947 5959 int spares = 0;
949c47a0 5960 int i;
a48ac0a8 5961 __u32 mpb_size = sizeof(struct imsm_super) - sizeof(struct imsm_disk);
36988a3d 5962 int num_disks = 0;
146c6260 5963 int clear_migration_record = 1;
bbab0940 5964 __u32 bbm_log_size;
cdddbdbc 5965
c2c087e6
DW		 5966 /* 'generation' is incremented everytime the metadata is written */
5967 generation = __le32_to_cpu(mpb->generation_num);
5968 generation++;
5969 mpb->generation_num = __cpu_to_le32(generation);
5970
148acb7b
DW		 5971 /* fix up cases where previous mdadm releases failed to set
5972 * orig_family_num
5973 */
5974 if (mpb->orig_family_num == 0)
5975 mpb->orig_family_num = mpb->family_num;
5976
d23fe947 5977 for (d = super->disks; d; d = d->next) {
8796fdc4 5978 if (d->index == -1)
d23fe947 5979 spares++;
36988a3d 5980 else {
d23fe947 5981 mpb->disk[d->index] = d->disk;
36988a3d
AK		 5982 num_disks++;
5983 }
d23fe947 5984 }
36988a3d 5985 for (d = super->missing; d; d = d->next) {
47ee5a45 5986 mpb->disk[d->index] = d->disk;
36988a3d
AK		 5987 num_disks++;
5988 }
5989 mpb->num_disks = num_disks;
5990 mpb_size += sizeof(struct imsm_disk) * mpb->num_disks;
b9f594fe 5991
949c47a0
DW		 5992 for (i = 0; i < mpb->num_raid_devs; i++) {
5993 struct imsm_dev *dev = __get_imsm_dev(mpb, i);
36988a3d
AK		 5994 struct imsm_dev *dev2 = get_imsm_dev(super, i);
5995 if (dev && dev2) {
5996 imsm_copy_dev(dev, dev2);
5997 mpb_size += sizeof_imsm_dev(dev, 0);
5998 }
146c6260
AK		 5999 if (is_gen_migration(dev2))
6000 clear_migration_record = 0;
949c47a0 6001 }
bbab0940
TM		 6002
6003 bbm_log_size = get_imsm_bbm_log_size(super->bbm_log);
6004
6005 if (bbm_log_size) {
6006 memcpy((void *)mpb + mpb_size, super->bbm_log, bbm_log_size);
6007 mpb->attributes |= MPB_ATTRIB_BBM;
6008 } else
6009 mpb->attributes &= ~MPB_ATTRIB_BBM;
6010
6011 super->anchor->bbm_log_size = __cpu_to_le32(bbm_log_size);
6012 mpb_size += bbm_log_size;
a48ac0a8 6013 mpb->mpb_size = __cpu_to_le32(mpb_size);
949c47a0 6014
bbab0940
TM		 6015#ifdef DEBUG
6016 assert(super->len == 0 || mpb_size <= super->len);
6017#endif
6018
c2c087e6 6019 /* recalculate checksum */
949c47a0 6020 sum = __gen_imsm_checksum(mpb);
c2c087e6
DW		 6021 mpb->check_sum = __cpu_to_le32(sum);
6022
51d83f5d
AK		 6023 if (super->clean_migration_record_by_mdmon) {
6024 clear_migration_record = 1;
6025 super->clean_migration_record_by_mdmon = 0;
6026 }
146c6260 6027 if (clear_migration_record)
de44e46f 6028 memset(super->migr_rec_buf, 0,
85337573 6029 MIGR_REC_BUF_SECTORS*MAX_SECTOR_SIZE);
146c6260 6030
f36a9ecd
PB		 6031 if (sector_size == 4096)
6032 convert_to_4k(super);
6033
d23fe947 6034 /* write the mpb for disks that compose raid devices */
c2c087e6 6035 for (d = super->disks; d ; d = d->next) {
86c54047 6036 if (d->index < 0 || is_failed(&d->disk))
d23fe947 6037 continue;
30602f53 6038
146c6260
AK		 6039 if (clear_migration_record) {
6040 unsigned long long dsize;
6041
6042 get_dev_size(d->fd, NULL, &dsize);
de44e46f
PB		 6043 if (lseek64(d->fd, dsize - sector_size,
6044 SEEK_SET) >= 0) {
466070ad
PB		 6045 if ((unsigned int)write(d->fd,
6046 super->migr_rec_buf,
de44e46f
PB		 6047 MIGR_REC_BUF_SECTORS*sector_size) !=
6048 MIGR_REC_BUF_SECTORS*sector_size)
9e2d750d 6049 perror("Write migr_rec failed");
146c6260
AK		 6050 }
6051 }
51d83f5d
AK		 6052
6053 if (store_imsm_mpb(d->fd, mpb))
6054 fprintf(stderr,
1ade5cc1
N		 6055 "failed for device %d:%d (fd: %d)%s\n",
6056 d->major, d->minor,
51d83f5d
AK		 6057 d->fd, strerror(errno));
6058
c2c087e6
DW		 6059 if (doclose) {
6060 close(d->fd);
6061 d->fd = -1;
6062 }
6063 }
6064
d23fe947
DW		 6065 if (spares)
6066 return write_super_imsm_spares(super, doclose);
6067
e74255d9 6068 return 0;
c2c087e6
DW		 6069}
6070
9b1fb677 6071static int create_array(struct supertype *st, int dev_idx)
43dad3d6
DW		 6072{
6073 size_t len;
6074 struct imsm_update_create_array *u;
6075 struct intel_super *super = st->sb;
9b1fb677 6076 struct imsm_dev *dev = get_imsm_dev(super, dev_idx);
238c0a71 6077 struct imsm_map *map = get_imsm_map(dev, MAP_0);
54c2c1ea
DW		 6078 struct disk_info *inf;
6079 struct imsm_disk *disk;
6080 int i;
43dad3d6 6081
54c2c1ea
DW		 6082 len = sizeof(*u) - sizeof(*dev) + sizeof_imsm_dev(dev, 0) +
6083 sizeof(*inf) * map->num_members;
503975b9 6084 u = xmalloc(len);
43dad3d6 6085 u->type = update_create_array;
9b1fb677 6086 u->dev_idx = dev_idx;
43dad3d6 6087 imsm_copy_dev(&u->dev, dev);
54c2c1ea
DW		 6088 inf = get_disk_info(u);
6089 for (i = 0; i < map->num_members; i++) {
238c0a71 6090 int idx = get_imsm_disk_idx(dev, i, MAP_X);
9b1fb677 6091
54c2c1ea 6092 disk = get_imsm_disk(super, idx);
1ca5c8e0
N		 6093 if (!disk)
6094 disk = get_imsm_missing(super, idx);
54c2c1ea
DW		 6095 serialcpy(inf[i].serial, disk->serial);
6096 }
43dad3d6
DW		 6097 append_metadata_update(st, u, len);
6098
6099 return 0;
6100}
6101
1a64be56 6102static int mgmt_disk(struct supertype *st)
43dad3d6
DW		 6103{
6104 struct intel_super *super = st->sb;
6105 size_t len;
1a64be56 6106 struct imsm_update_add_remove_disk *u;
43dad3d6 6107
1a64be56 6108 if (!super->disk_mgmt_list)
43dad3d6
DW		 6109 return 0;
6110
6111 len = sizeof(*u);
503975b9 6112 u = xmalloc(len);
1a64be56 6113 u->type = update_add_remove_disk;
43dad3d6
DW		 6114 append_metadata_update(st, u, len);
6115
6116 return 0;
6117}
2432ce9b
AP		 6118
6119__u32 crc32c_le(__u32 crc, unsigned char const *p, size_t len);
6120
e397cefe
AP		 6121static int write_ppl_header(unsigned long long ppl_sector, int fd, void *buf)
6122{
6123 struct ppl_header *ppl_hdr = buf;
6124 int ret;
6125
6126 ppl_hdr->checksum = __cpu_to_le32(~crc32c_le(~0, buf, PPL_HEADER_SIZE));
6127
6128 if (lseek64(fd, ppl_sector * 512, SEEK_SET) < 0) {
6129 ret = -errno;
6130 perror("Failed to seek to PPL header location");
6131 return ret;
6132 }
6133
6134 if (write(fd, buf, PPL_HEADER_SIZE) != PPL_HEADER_SIZE) {
6135 ret = -errno;
6136 perror("Write PPL header failed");
6137 return ret;
6138 }
6139
6140 fsync(fd);
6141
6142 return 0;
6143}
6144
2432ce9b
AP		 6145static int write_init_ppl_imsm(struct supertype *st, struct mdinfo *info, int fd)
6146{
6147 struct intel_super *super = st->sb;
6148 void *buf;
6149 struct ppl_header *ppl_hdr;
6150 int ret;
6151
b2514242
PB		 6152 /* first clear entire ppl space */
6153 ret = zero_disk_range(fd, info->ppl_sector, info->ppl_size);
6154 if (ret)
6155 return ret;
6156
6157 ret = posix_memalign(&buf, MAX_SECTOR_SIZE, PPL_HEADER_SIZE);
2432ce9b
AP		 6158 if (ret) {
6159 pr_err("Failed to allocate PPL header buffer\n");
e397cefe 6160 return -ret;
2432ce9b
AP		 6161 }
6162
6163 memset(buf, 0, PPL_HEADER_SIZE);
6164 ppl_hdr = buf;
6165 memset(ppl_hdr->reserved, 0xff, PPL_HDR_RESERVED);
6166 ppl_hdr->signature = __cpu_to_le32(super->anchor->orig_family_num);
b23d0750
AP		 6167
6168 if (info->mismatch_cnt) {
6169 /*
6170 * We are overwriting an invalid ppl. Make one entry with wrong
6171 * checksum to prevent the kernel from skipping resync.
6172 */
6173 ppl_hdr->entries_count = __cpu_to_le32(1);
6174 ppl_hdr->entries[0].checksum = ~0;
6175 }
6176
e397cefe 6177 ret = write_ppl_header(info->ppl_sector, fd, buf);
2432ce9b
AP		 6178
6179 free(buf);
6180 return ret;
6181}
6182
e397cefe
AP		 6183static int is_rebuilding(struct imsm_dev *dev);
6184
2432ce9b
AP		 6185static int validate_ppl_imsm(struct supertype *st, struct mdinfo *info,
6186 struct mdinfo *disk)
6187{
6188 struct intel_super *super = st->sb;
6189 struct dl *d;
e397cefe 6190 void *buf_orig, *buf, *buf_prev = NULL;
2432ce9b 6191 int ret = 0;
e397cefe 6192 struct ppl_header *ppl_hdr = NULL;
2432ce9b
AP		 6193 __u32 crc;
6194 struct imsm_dev *dev;
2432ce9b 6195 __u32 idx;
44b6b876
PB		 6196 unsigned int i;
6197 unsigned long long ppl_offset = 0;
6198 unsigned long long prev_gen_num = 0;
2432ce9b
AP		 6199
6200 if (disk->disk.raid_disk < 0)
6201 return 0;
6202
2432ce9b 6203 dev = get_imsm_dev(super, info->container_member);
2fc0fc63 6204 idx = get_imsm_disk_idx(dev, disk->disk.raid_disk, MAP_0);
2432ce9b
AP		 6205 d = get_imsm_dl_disk(super, idx);
6206
6207 if (!d || d->index < 0 || is_failed(&d->disk))
e397cefe
AP		 6208 return 0;
6209
6210 if (posix_memalign(&buf_orig, MAX_SECTOR_SIZE, PPL_HEADER_SIZE * 2)) {
6211 pr_err("Failed to allocate PPL header buffer\n");
6212 return -1;
6213 }
6214 buf = buf_orig;
2432ce9b 6215
44b6b876
PB		 6216 ret = 1;
6217 while (ppl_offset < MULTIPLE_PPL_AREA_SIZE_IMSM) {
e397cefe
AP		 6218 void *tmp;
6219
44b6b876 6220 dprintf("Checking potential PPL at offset: %llu\n", ppl_offset);
2432ce9b 6221
44b6b876
PB		 6222 if (lseek64(d->fd, info->ppl_sector * 512 + ppl_offset,
6223 SEEK_SET) < 0) {
6224 perror("Failed to seek to PPL header location");
6225 ret = -1;
e397cefe 6226 break;
44b6b876 6227 }
2432ce9b 6228
44b6b876
PB		 6229 if (read(d->fd, buf, PPL_HEADER_SIZE) != PPL_HEADER_SIZE) {
6230 perror("Read PPL header failed");
6231 ret = -1;
e397cefe 6232 break;
44b6b876 6233 }
2432ce9b 6234
44b6b876 6235 ppl_hdr = buf;
2432ce9b 6236
44b6b876
PB		 6237 crc = __le32_to_cpu(ppl_hdr->checksum);
6238 ppl_hdr->checksum = 0;
6239
6240 if (crc != ~crc32c_le(~0, buf, PPL_HEADER_SIZE)) {
6241 dprintf("Wrong PPL header checksum on %s\n",
6242 d->devname);
e397cefe 6243 break;
44b6b876
PB		 6244 }
6245
6246 if (prev_gen_num > __le64_to_cpu(ppl_hdr->generation)) {
6247 /* previous was newest, it was already checked */
e397cefe 6248 break;
44b6b876
PB		 6249 }
6250
6251 if ((__le32_to_cpu(ppl_hdr->signature) !=
6252 super->anchor->orig_family_num)) {
6253 dprintf("Wrong PPL header signature on %s\n",
6254 d->devname);
6255 ret = 1;
e397cefe 6256 break;
44b6b876
PB		 6257 }
6258
6259 ret = 0;
6260 prev_gen_num = __le64_to_cpu(ppl_hdr->generation);
2432ce9b 6261
44b6b876
PB		 6262 ppl_offset += PPL_HEADER_SIZE;
6263 for (i = 0; i < __le32_to_cpu(ppl_hdr->entries_count); i++)
6264 ppl_offset +=
6265 __le32_to_cpu(ppl_hdr->entries[i].pp_size);
e397cefe
AP		 6266
6267 if (!buf_prev)
6268 buf_prev = buf + PPL_HEADER_SIZE;
6269 tmp = buf_prev;
6270 buf_prev = buf;
6271 buf = tmp;
2432ce9b
AP		 6272 }
6273
e397cefe
AP		 6274 if (buf_prev) {
6275 buf = buf_prev;
6276 ppl_hdr = buf_prev;
6277 }
2432ce9b 6278
54148aba
PB		 6279 /*
6280 * Update metadata to use mutliple PPLs area (1MB).
6281 * This is done once for all RAID members
6282 */
6283 if (info->consistency_policy == CONSISTENCY_POLICY_PPL &&
6284 info->ppl_size != (MULTIPLE_PPL_AREA_SIZE_IMSM >> 9)) {
6285 char subarray[20];
6286 struct mdinfo *member_dev;
6287
6288 sprintf(subarray, "%d", info->container_member);
6289
6290 if (mdmon_running(st->container_devnm))
6291 st->update_tail = &st->updates;
6292
6293 if (st->ss->update_subarray(st, subarray, "ppl", NULL)) {
6294 pr_err("Failed to update subarray %s\n",
6295 subarray);
6296 } else {
6297 if (st->update_tail)
6298 flush_metadata_updates(st);
6299 else
6300 st->ss->sync_metadata(st);
6301 info->ppl_size = (MULTIPLE_PPL_AREA_SIZE_IMSM >> 9);
6302 for (member_dev = info->devs; member_dev;
6303 member_dev = member_dev->next)
6304 member_dev->ppl_size =
6305 (MULTIPLE_PPL_AREA_SIZE_IMSM >> 9);
6306 }
6307 }
6308
b23d0750 6309 if (ret == 1) {
2fc0fc63
AP		 6310 struct imsm_map *map = get_imsm_map(dev, MAP_X);
6311
50b9c10d
PB		 6312 if (map->map_state == IMSM_T_STATE_UNINITIALIZED ||
6313 (map->map_state == IMSM_T_STATE_NORMAL &&
2ec9d182 6314 !(dev->vol.dirty & RAIDVOL_DIRTY)) ||
e397cefe 6315 (is_rebuilding(dev) &&
2ec9d182
AP		 6316 dev->vol.curr_migr_unit == 0 &&
6317 get_imsm_disk_idx(dev, disk->disk.raid_disk, MAP_1) != idx))
b23d0750
AP		 6318 ret = st->ss->write_init_ppl(st, info, d->fd);
6319 else
6320 info->mismatch_cnt++;
e397cefe
AP		 6321 } else if (ret == 0 &&
6322 ppl_hdr->entries_count == 0 &&
6323 is_rebuilding(dev) &&
6324 info->resync_start == 0) {
6325 /*
6326 * The header has no entries - add a single empty entry and
6327 * rewrite the header to prevent the kernel from going into
6328 * resync after an interrupted rebuild.
6329 */
6330 ppl_hdr->entries_count = __cpu_to_le32(1);
6331 ret = write_ppl_header(info->ppl_sector, d->fd, buf);
b23d0750 6332 }
2432ce9b 6333
e397cefe
AP		 6334 free(buf_orig);
6335
2432ce9b
AP		 6336 return ret;
6337}
6338
2432ce9b
AP		 6339static int write_init_ppl_imsm_all(struct supertype *st, struct mdinfo *info)
6340{
6341 struct intel_super *super = st->sb;
6342 struct dl *d;
6343 int ret = 0;
6344
6345 if (info->consistency_policy != CONSISTENCY_POLICY_PPL ||
6346 info->array.level != 5)
6347 return 0;
6348
6349 for (d = super->disks; d ; d = d->next) {
6350 if (d->index < 0 || is_failed(&d->disk))
6351 continue;
6352
6353 ret = st->ss->write_init_ppl(st, info, d->fd);
6354 if (ret)
6355 break;
6356 }
6357
6358 return ret;
6359}
43dad3d6 6360
c2c087e6
DW		 6361static int write_init_super_imsm(struct supertype *st)
6362{
9b1fb677
DW		 6363 struct intel_super *super = st->sb;
6364 int current_vol = super->current_vol;
2432ce9b
AP		 6365 int rv = 0;
6366 struct mdinfo info;
6367
6368 getinfo_super_imsm(st, &info, NULL);
9b1fb677
DW		 6369
6370 /* we are done with current_vol reset it to point st at the container */
6371 super->current_vol = -1;
6372
8273f55e 6373 if (st->update_tail) {
43dad3d6
DW		 6374 /* queue the recently created array / added disk
6375 * as a metadata update */
8273f55e 6376
43dad3d6 6377 /* determine if we are creating a volume or adding a disk */
9b1fb677 6378 if (current_vol < 0) {
1a64be56
LM		 6379 /* in the mgmt (add/remove) disk case we are running
6380 * in mdmon context, so don't close fd's
43dad3d6 6381 */
2432ce9b
AP		 6382 rv = mgmt_disk(st);
6383 } else {
6384 rv = write_init_ppl_imsm_all(st, &info);
6385 if (!rv)
6386 rv = create_array(st, current_vol);
6387 }
d682f344
N		 6388 } else {
6389 struct dl *d;
6390 for (d = super->disks; d; d = d->next)
ba728be7 6391 Kill(d->devname, NULL, 0, -1, 1);
2432ce9b
AP		 6392 if (current_vol >= 0)
6393 rv = write_init_ppl_imsm_all(st, &info);
6394 if (!rv)
6395 rv = write_super_imsm(st, 1);
d682f344 6396 }
2432ce9b
AP		 6397
6398 return rv;
cdddbdbc
DW		 6399}
6400
e683ca88 6401static int store_super_imsm(struct supertype *st, int fd)
cdddbdbc 6402{
e683ca88
DW		 6403 struct intel_super *super = st->sb;
6404 struct imsm_super *mpb = super ? super->anchor : NULL;
551c80c1 6405
e683ca88 6406 if (!mpb)
ad97895e
DW		 6407 return 1;
6408
f36a9ecd
PB		 6409 if (super->sector_size == 4096)
6410 convert_to_4k(super);
e683ca88 6411 return store_imsm_mpb(fd, mpb);
cdddbdbc
DW		 6412}
6413
cdddbdbc
DW		 6414static int validate_geometry_imsm_container(struct supertype *st, int level,
6415 int layout, int raiddisks, int chunk,
af4348dd
N		 6416 unsigned long long size,
6417 unsigned long long data_offset,
6418 char *dev,
2c514b71
NB		 6419 unsigned long long *freesize,
6420 int verbose)
cdddbdbc 6421{
c2c087e6
DW		 6422 int fd;
6423 unsigned long long ldsize;
594dc1b8 6424 struct intel_super *super;
f2f5c343 6425 int rv = 0;
cdddbdbc 6426
c2c087e6
DW		 6427 if (level != LEVEL_CONTAINER)
6428 return 0;
6429 if (!dev)
6430 return 1;
6431
6432 fd = open(dev, O_RDONLY|O_EXCL, 0);
6433 if (fd < 0) {
ba728be7 6434 if (verbose > 0)
e7b84f9d 6435 pr_err("imsm: Cannot open %s: %s\n",
2c514b71 6436 dev, strerror(errno));
c2c087e6
DW		 6437 return 0;
6438 }
6439 if (!get_dev_size(fd, dev, &ldsize)) {
6440 close(fd);
6441 return 0;
6442 }
f2f5c343
LM		 6443
6444 /* capabilities retrieve could be possible
6445 * note that there is no fd for the disks in array.
6446 */
6447 super = alloc_super();
8d67477f
TM		 6448 if (!super) {
6449 close(fd);
6450 return 0;
6451 }
fa7bb6f8
PB		 6452 if (!get_dev_sector_size(fd, NULL, &super->sector_size)) {
6453 close(fd);
6454 free_imsm(super);
6455 return 0;
6456 }
6457
ba728be7 6458 rv = find_intel_hba_capability(fd, super, verbose > 0 ? dev : NULL);
f2f5c343
LM		 6459 if (rv != 0) {
6460#if DEBUG
6461 char str[256];
6462 fd2devname(fd, str);
1ade5cc1 6463 dprintf("fd: %d %s orom: %p rv: %d raiddisk: %d\n",
f2f5c343
LM		 6464 fd, str, super->orom, rv, raiddisks);
6465#endif
6466 /* no orom/efi or non-intel hba of the disk */
6467 close(fd);
6468 free_imsm(super);
6469 return 0;
6470 }
c2c087e6 6471 close(fd);
9126b9a8
CA		 6472 if (super->orom) {
6473 if (raiddisks > super->orom->tds) {
6474 if (verbose)
7a862a02 6475 pr_err("%d exceeds maximum number of platform supported disks: %d\n",
9126b9a8
CA		 6476 raiddisks, super->orom->tds);
6477 free_imsm(super);
6478 return 0;
6479 }
6480 if ((super->orom->attr & IMSM_OROM_ATTR_2TB_DISK) == 0 &&
6481 (ldsize >> 9) >> 32 > 0) {
6482 if (verbose)
e7b84f9d 6483 pr_err("%s exceeds maximum platform supported size\n", dev);
9126b9a8
CA		 6484 free_imsm(super);
6485 return 0;
6486 }
f2f5c343 6487 }
c2c087e6 6488
af4348dd 6489 *freesize = avail_size_imsm(st, ldsize >> 9, data_offset);
f2f5c343 6490 free_imsm(super);
c2c087e6
DW		 6491
6492 return 1;
cdddbdbc
DW		 6493}
6494
0dcecb2e
DW		 6495static unsigned long long find_size(struct extent *e, int *idx, int num_extents)
6496{
6497 const unsigned long long base_start = e[*idx].start;
6498 unsigned long long end = base_start + e[*idx].size;
6499 int i;
6500
6501 if (base_start == end)
6502 return 0;
6503
6504 *idx = *idx + 1;
6505 for (i = *idx; i < num_extents; i++) {
6506 /* extend overlapping extents */
6507 if (e[i].start >= base_start &&
6508 e[i].start <= end) {
6509 if (e[i].size == 0)
6510 return 0;
6511 if (e[i].start + e[i].size > end)
6512 end = e[i].start + e[i].size;
6513 } else if (e[i].start > end) {
6514 *idx = i;
6515 break;
6516 }
6517 }
6518
6519 return end - base_start;
6520}
6521
6522static unsigned long long merge_extents(struct intel_super *super, int sum_extents)
6523{
6524 /* build a composite disk with all known extents and generate a new
6525 * 'maxsize' given the "all disks in an array must share a common start
6526 * offset" constraint
6527 */
503975b9 6528 struct extent *e = xcalloc(sum_extents, sizeof(*e));
0dcecb2e
DW		 6529 struct dl *dl;
6530 int i, j;
6531 int start_extent;
6532 unsigned long long pos;
b9d77223 6533 unsigned long long start = 0;
0dcecb2e
DW		 6534 unsigned long long maxsize;
6535 unsigned long reserve;
6536
0dcecb2e
DW		 6537 /* coalesce and sort all extents. also, check to see if we need to
6538 * reserve space between member arrays
6539 */
6540 j = 0;
6541 for (dl = super->disks; dl; dl = dl->next) {
6542 if (!dl->e)
6543 continue;
6544 for (i = 0; i < dl->extent_cnt; i++)
6545 e[j++] = dl->e[i];
6546 }
6547 qsort(e, sum_extents, sizeof(*e), cmp_extent);
6548
6549 /* merge extents */
6550 i = 0;
6551 j = 0;
6552 while (i < sum_extents) {
6553 e[j].start = e[i].start;
6554 e[j].size = find_size(e, &i, sum_extents);
6555 j++;
6556 if (e[j-1].size == 0)
6557 break;
6558 }
6559
6560 pos = 0;
6561 maxsize = 0;
6562 start_extent = 0;
6563 i = 0;
6564 do {
6565 unsigned long long esize;
6566
6567 esize = e[i].start - pos;
6568 if (esize >= maxsize) {
6569 maxsize = esize;
6570 start = pos;
6571 start_extent = i;
6572 }
6573 pos = e[i].start + e[i].size;
6574 i++;
6575 } while (e[i-1].size);
6576 free(e);
6577
a7dd165b
DW		 6578 if (maxsize == 0)
6579 return 0;
6580
6581 /* FIXME assumes volume at offset 0 is the first volume in a
6582 * container
6583 */
0dcecb2e
DW		 6584 if (start_extent > 0)
6585 reserve = IMSM_RESERVED_SECTORS; /* gap between raid regions */
6586 else
6587 reserve = 0;
6588
6589 if (maxsize < reserve)
a7dd165b 6590 return 0;
0dcecb2e 6591
5551b113 6592 super->create_offset = ~((unsigned long long) 0);
0dcecb2e 6593 if (start + reserve > super->create_offset)
a7dd165b 6594 return 0; /* start overflows create_offset */
0dcecb2e
DW		 6595 super->create_offset = start + reserve;
6596
6597 return maxsize - reserve;
6598}
6599
88c32bb1
DW		 6600static int is_raid_level_supported(const struct imsm_orom *orom, int level, int raiddisks)
6601{
6602 if (level < 0 || level == 6 || level == 4)
6603 return 0;
6604
6605 /* if we have an orom prevent invalid raid levels */
6606 if (orom)
6607 switch (level) {
6608 case 0: return imsm_orom_has_raid0(orom);
6609 case 1:
6610 if (raiddisks > 2)
6611 return imsm_orom_has_raid1e(orom);
1c556e92
DW		 6612 return imsm_orom_has_raid1(orom) && raiddisks == 2;
6613 case 10: return imsm_orom_has_raid10(orom) && raiddisks == 4;
6614 case 5: return imsm_orom_has_raid5(orom) && raiddisks > 2;
88c32bb1
DW		 6615 }
6616 else
6617 return 1; /* not on an Intel RAID platform so anything goes */
6618
6619 return 0;
6620}
6621
ca9de185
LM		 6622static int
6623active_arrays_by_format(char *name, char* hba, struct md_list **devlist,
6624 int dpa, int verbose)
6625{
6626 struct mdstat_ent *mdstat = mdstat_read(0, 0);
594dc1b8 6627 struct mdstat_ent *memb;
ca9de185
LM		 6628 int count = 0;
6629 int num = 0;
594dc1b8 6630 struct md_list *dv;
ca9de185
LM		 6631 int found;
6632
6633 for (memb = mdstat ; memb ; memb = memb->next) {
6634 if (memb->metadata_version &&
fc54fe7a 6635 (strncmp(memb->metadata_version, "external:", 9) == 0) &&
ca9de185
LM		 6636 (strcmp(&memb->metadata_version[9], name) == 0) &&
6637 !is_subarray(memb->metadata_version+9) &&
6638 memb->members) {
6639 struct dev_member *dev = memb->members;
6640 int fd = -1;
6641 while(dev && (fd < 0)) {
503975b9
N		 6642 char *path = xmalloc(strlen(dev->name) + strlen("/dev/") + 1);
6643 num = sprintf(path, "%s%s", "/dev/", dev->name);
6644 if (num > 0)
6645 fd = open(path, O_RDONLY, 0);
089f9d79 6646 if (num <= 0 || fd < 0) {
676e87a8 6647 pr_vrb("Cannot open %s: %s\n",
503975b9 6648 dev->name, strerror(errno));
ca9de185 6649 }
503975b9 6650 free(path);
ca9de185
LM		 6651 dev = dev->next;
6652 }
6653 found = 0;
089f9d79 6654 if (fd >= 0 && disk_attached_to_hba(fd, hba)) {
ca9de185
LM		 6655 struct mdstat_ent *vol;
6656 for (vol = mdstat ; vol ; vol = vol->next) {
089f9d79 6657 if (vol->active > 0 &&
ca9de185 6658 vol->metadata_version &&
9581efb1 6659 is_container_member(vol, memb->devnm)) {
ca9de185
LM		 6660 found++;
6661 count++;
6662 }
6663 }
6664 if (*devlist && (found < dpa)) {
503975b9 6665 dv = xcalloc(1, sizeof(*dv));
9581efb1
N		 6666 dv->devname = xmalloc(strlen(memb->devnm) + strlen("/dev/") + 1);
6667 sprintf(dv->devname, "%s%s", "/dev/", memb->devnm);
503975b9
N		 6668 dv->found = found;
6669 dv->used = 0;
6670 dv->next = *devlist;
6671 *devlist = dv;
ca9de185
LM		 6672 }
6673 }
6674 if (fd >= 0)
6675 close(fd);
6676 }
6677 }
6678 free_mdstat(mdstat);
6679 return count;
6680}
6681
6682#ifdef DEBUG_LOOP
6683static struct md_list*
6684get_loop_devices(void)
6685{
6686 int i;
6687 struct md_list *devlist = NULL;
594dc1b8 6688 struct md_list *dv;
ca9de185
LM		 6689
6690 for(i = 0; i < 12; i++) {
503975b9
N		 6691 dv = xcalloc(1, sizeof(*dv));
6692 dv->devname = xmalloc(40);
ca9de185
LM		 6693 sprintf(dv->devname, "/dev/loop%d", i);
6694 dv->next = devlist;
6695 devlist = dv;
6696 }
6697 return devlist;
6698}
6699#endif
6700
6701static struct md_list*
6702get_devices(const char *hba_path)
6703{
6704 struct md_list *devlist = NULL;
594dc1b8 6705 struct md_list *dv;
ca9de185
LM		 6706 struct dirent *ent;
6707 DIR *dir;
6708 int err = 0;
6709
6710#if DEBUG_LOOP
6711 devlist = get_loop_devices();
6712 return devlist;
6713#endif
6714 /* scroll through /sys/dev/block looking for devices attached to
6715 * this hba
6716 */
6717 dir = opendir("/sys/dev/block");
6718 for (ent = dir ? readdir(dir) : NULL; ent; ent = readdir(dir)) {
6719 int fd;
6720 char buf[1024];
6721 int major, minor;
6722 char *path = NULL;
6723 if (sscanf(ent->d_name, "%d:%d", &major, &minor) != 2)
6724 continue;
6725 path = devt_to_devpath(makedev(major, minor));
6726 if (!path)
6727 continue;
6728 if (!path_attached_to_hba(path, hba_path)) {
6729 free(path);
6730 path = NULL;
6731 continue;
6732 }
6733 free(path);
6734 path = NULL;
6735 fd = dev_open(ent->d_name, O_RDONLY);
6736 if (fd >= 0) {
6737 fd2devname(fd, buf);
6738 close(fd);
6739 } else {
e7b84f9d 6740 pr_err("cannot open device: %s\n",
ca9de185
LM		 6741 ent->d_name);
6742 continue;
6743 }
6744
503975b9
N		 6745 dv = xcalloc(1, sizeof(*dv));
6746 dv->devname = xstrdup(buf);
ca9de185
LM		 6747 dv->next = devlist;
6748 devlist = dv;
6749 }
6750 if (err) {
6751 while(devlist) {
6752 dv = devlist;
6753 devlist = devlist->next;
6754 free(dv->devname);
6755 free(dv);
6756 }
6757 }
562aa102 6758 closedir(dir);
ca9de185
LM		 6759 return devlist;
6760}
6761
6762static int
6763count_volumes_list(struct md_list *devlist, char *homehost,
6764 int verbose, int *found)
6765{
6766 struct md_list *tmpdev;
6767 int count = 0;
594dc1b8 6768 struct supertype *st;
ca9de185
LM		 6769
6770 /* first walk the list of devices to find a consistent set
6771 * that match the criterea, if that is possible.
6772 * We flag the ones we like with 'used'.
6773 */
6774 *found = 0;
6775 st = match_metadata_desc_imsm("imsm");
6776 if (st == NULL) {
676e87a8 6777 pr_vrb("cannot allocate memory for imsm supertype\n");
ca9de185
LM		 6778 return 0;
6779 }
6780
6781 for (tmpdev = devlist; tmpdev; tmpdev = tmpdev->next) {
6782 char *devname = tmpdev->devname;
0a6bff09 6783 dev_t rdev;
ca9de185
LM		 6784 struct supertype *tst;
6785 int dfd;
6786 if (tmpdev->used > 1)
6787 continue;
6788 tst = dup_super(st);
6789 if (tst == NULL) {
676e87a8 6790 pr_vrb("cannot allocate memory for imsm supertype\n");
ca9de185
LM		 6791 goto err_1;
6792 }
6793 tmpdev->container = 0;
6794 dfd = dev_open(devname, O_RDONLY|O_EXCL);
6795 if (dfd < 0) {
1ade5cc1 6796 dprintf("cannot open device %s: %s\n",
ca9de185
LM		 6797 devname, strerror(errno));
6798 tmpdev->used = 2;
0a6bff09 6799 } else if (!fstat_is_blkdev(dfd, devname, &rdev)) {
ca9de185
LM		 6800 tmpdev->used = 2;
6801 } else if (must_be_container(dfd)) {
6802 struct supertype *cst;
6803 cst = super_by_fd(dfd, NULL);
6804 if (cst == NULL) {
1ade5cc1 6805 dprintf("cannot recognize container type %s\n",
ca9de185
LM		 6806 devname);
6807 tmpdev->used = 2;
6808 } else if (tst->ss != st->ss) {
1ade5cc1 6809 dprintf("non-imsm container - ignore it: %s\n",
ca9de185
LM		 6810 devname);
6811 tmpdev->used = 2;
6812 } else if (!tst->ss->load_container ||
6813 tst->ss->load_container(tst, dfd, NULL))
6814 tmpdev->used = 2;
6815 else {
6816 tmpdev->container = 1;
6817 }
6818 if (cst)
6819 cst->ss->free_super(cst);
6820 } else {
0a6bff09 6821 tmpdev->st_rdev = rdev;
ca9de185 6822 if (tst->ss->load_super(tst,dfd, NULL)) {
1ade5cc1 6823 dprintf("no RAID superblock on %s\n",
ca9de185
LM		 6824 devname);
6825 tmpdev->used = 2;
6826 } else if (tst->ss->compare_super == NULL) {
1ade5cc1 6827 dprintf("Cannot assemble %s metadata on %s\n",
ca9de185
LM		 6828 tst->ss->name, devname);
6829 tmpdev->used = 2;
6830 }
6831 }
6832 if (dfd >= 0)
6833 close(dfd);
6834 if (tmpdev->used == 2 || tmpdev->used == 4) {
6835 /* Ignore unrecognised devices during auto-assembly */
6836 goto loop;
6837 }
6838 else {
6839 struct mdinfo info;
6840 tst->ss->getinfo_super(tst, &info, NULL);
6841
6842 if (st->minor_version == -1)
6843 st->minor_version = tst->minor_version;
6844
6845 if (memcmp(info.uuid, uuid_zero,
6846 sizeof(int[4])) == 0) {
6847 /* this is a floating spare. It cannot define
6848 * an array unless there are no more arrays of
6849 * this type to be found. It can be included
6850 * in an array of this type though.
6851 */
6852 tmpdev->used = 3;
6853 goto loop;
6854 }
6855
6856 if (st->ss != tst->ss ||
6857 st->minor_version != tst->minor_version ||
6858 st->ss->compare_super(st, tst) != 0) {
6859 /* Some mismatch. If exactly one array matches this host,
6860 * we can resolve on that one.
6861 * Or, if we are auto assembling, we just ignore the second
6862 * for now.
6863 */
1ade5cc1 6864 dprintf("superblock on %s doesn't match others - assembly aborted\n",
ca9de185
LM		 6865 devname);
6866 goto loop;
6867 }
6868 tmpdev->used = 1;
6869 *found = 1;
6870 dprintf("found: devname: %s\n", devname);
6871 }
6872 loop:
6873 if (tst)
6874 tst->ss->free_super(tst);
6875 }
6876 if (*found != 0) {
6877 int err;
6878 if ((err = load_super_imsm_all(st, -1, &st->sb, NULL, devlist, 0)) == 0) {
6879 struct mdinfo *iter, *head = st->ss->container_content(st, NULL);
6880 for (iter = head; iter; iter = iter->next) {
6881 dprintf("content->text_version: %s vol\n",
6882 iter->text_version);
6883 if (iter->array.state & (1<<MD_SB_BLOCK_VOLUME)) {
6884 /* do not assemble arrays with unsupported
6885 configurations */
1ade5cc1 6886 dprintf("Cannot activate member %s.\n",
ca9de185
LM		 6887 iter->text_version);
6888 } else
6889 count++;
6890 }
6891 sysfs_free(head);
6892
6893 } else {
1ade5cc1 6894 dprintf("No valid super block on device list: err: %d %p\n",
ca9de185
LM		 6895 err, st->sb);
6896 }
6897 } else {
1ade5cc1 6898 dprintf("no more devices to examine\n");
ca9de185
LM		 6899 }
6900
6901 for (tmpdev = devlist; tmpdev; tmpdev = tmpdev->next) {
089f9d79 6902 if (tmpdev->used == 1 && tmpdev->found) {
ca9de185
LM		 6903 if (count) {
6904 if (count < tmpdev->found)
6905 count = 0;
6906 else
6907 count -= tmpdev->found;
6908 }
6909 }
6910 if (tmpdev->used == 1)
6911 tmpdev->used = 4;
6912 }
6913 err_1:
6914 if (st)
6915 st->ss->free_super(st);
6916 return count;
6917}
6918
d3c11416
AO		 6919static int __count_volumes(char *hba_path, int dpa, int verbose,
6920 int cmp_hba_path)
ca9de185 6921{
72a45777 6922 struct sys_dev *idev, *intel_devices = find_intel_devices();
ca9de185 6923 int count = 0;
72a45777
PB		 6924 const struct orom_entry *entry;
6925 struct devid_list *dv, *devid_list;
ca9de185 6926
d3c11416 6927 if (!hba_path)
ca9de185
LM		 6928 return 0;
6929
72a45777 6930 for (idev = intel_devices; idev; idev = idev->next) {
d3c11416
AO		 6931 if (strstr(idev->path, hba_path))
6932 break;
72a45777
PB		 6933 }
6934
6935 if (!idev || !idev->dev_id)
ca9de185 6936 return 0;
72a45777
PB		 6937
6938 entry = get_orom_entry_by_device_id(idev->dev_id);
6939
6940 if (!entry || !entry->devid_list)
6941 return 0;
6942
6943 devid_list = entry->devid_list;
6944 for (dv = devid_list; dv; dv = dv->next) {
594dc1b8 6945 struct md_list *devlist;
d3c11416
AO		 6946 struct sys_dev *device = NULL;
6947 char *hpath;
72a45777
PB		 6948 int found = 0;
6949
d3c11416
AO		 6950 if (cmp_hba_path)
6951 device = device_by_id_and_path(dv->devid, hba_path);
6952 else
6953 device = device_by_id(dv->devid);
6954
72a45777 6955 if (device)
d3c11416 6956 hpath = device->path;
72a45777
PB		 6957 else
6958 return 0;
6959
d3c11416 6960 devlist = get_devices(hpath);
72a45777
PB		 6961 /* if no intel devices return zero volumes */
6962 if (devlist == NULL)
6963 return 0;
6964
d3c11416
AO		 6965 count += active_arrays_by_format("imsm", hpath, &devlist, dpa,
6966 verbose);
6967 dprintf("path: %s active arrays: %d\n", hpath, count);
72a45777
PB		 6968 if (devlist == NULL)
6969 return 0;
6970 do {
6971 found = 0;
6972 count += count_volumes_list(devlist,
6973 NULL,
6974 verbose,
6975 &found);
6976 dprintf("found %d count: %d\n", found, count);
6977 } while (found);
6978
d3c11416 6979 dprintf("path: %s total number of volumes: %d\n", hpath, count);
72a45777
PB		 6980
6981 while (devlist) {
6982 struct md_list *dv = devlist;
6983 devlist = devlist->next;
6984 free(dv->devname);
6985 free(dv);
6986 }
ca9de185
LM		 6987 }
6988 return count;
6989}
6990
d3c11416
AO		 6991static int count_volumes(struct intel_hba *hba, int dpa, int verbose)
6992{
6993 if (!hba)
6994 return 0;
6995 if (hba->type == SYS_DEV_VMD) {
6996 struct sys_dev *dev;
6997 int count = 0;
6998
6999 for (dev = find_intel_devices(); dev; dev = dev->next) {
7000 if (dev->type == SYS_DEV_VMD)
7001 count += __count_volumes(dev->path, dpa,
7002 verbose, 1);
7003 }
7004 return count;
7005 }
7006 return __count_volumes(hba->path, dpa, verbose, 0);
7007}
7008
cd9d1ac7
DW		 7009static int imsm_default_chunk(const struct imsm_orom *orom)
7010{
7011 /* up to 512 if the plaform supports it, otherwise the platform max.
7012 * 128 if no platform detected
7013 */
7014 int fs = max(7, orom ? fls(orom->sss) : 0);
7015
7016 return min(512, (1 << fs));
7017}
73408129 7018
6592ce37
DW		 7019static int
7020validate_geometry_imsm_orom(struct intel_super *super, int level, int layout,
2cc699af 7021 int raiddisks, int *chunk, unsigned long long size, int verbose)
6592ce37 7022{
660260d0
DW		 7023 /* check/set platform and metadata limits/defaults */
7024 if (super->orom && raiddisks > super->orom->dpa) {
676e87a8 7025 pr_vrb("platform supports a maximum of %d disks per array\n",
660260d0 7026 super->orom->dpa);
73408129
LM		 7027 return 0;
7028 }
7029
5d500228 7030 /* capabilities of OROM tested - copied from validate_geometry_imsm_volume */
660260d0 7031 if (!is_raid_level_supported(super->orom, level, raiddisks)) {
676e87a8 7032 pr_vrb("platform does not support raid%d with %d disk%s\n",
6592ce37
DW		 7033 level, raiddisks, raiddisks > 1 ? "s" : "");
7034 return 0;
7035 }
cd9d1ac7 7036
7ccc4cc4 7037 if (*chunk == 0 || *chunk == UnSet)
cd9d1ac7
DW		 7038 *chunk = imsm_default_chunk(super->orom);
7039
7ccc4cc4 7040 if (super->orom && !imsm_orom_has_chunk(super->orom, *chunk)) {
676e87a8 7041 pr_vrb("platform does not support a chunk size of: %d\n", *chunk);
cd9d1ac7 7042 return 0;
6592ce37 7043 }
cd9d1ac7 7044
6592ce37
DW		 7045 if (layout != imsm_level_to_layout(level)) {
7046 if (level == 5)
676e87a8 7047 pr_vrb("imsm raid 5 only supports the left-asymmetric layout\n");
6592ce37 7048 else if (level == 10)
676e87a8 7049 pr_vrb("imsm raid 10 only supports the n2 layout\n");
6592ce37 7050 else
676e87a8 7051 pr_vrb("imsm unknown layout %#x for this raid level %d\n",
6592ce37
DW		 7052 layout, level);
7053 return 0;
7054 }
2cc699af 7055
7ccc4cc4 7056 if (super->orom && (super->orom->attr & IMSM_OROM_ATTR_2TB) == 0 &&
2cc699af 7057 (calc_array_size(level, raiddisks, layout, *chunk, size) >> 32) > 0) {
676e87a8 7058 pr_vrb("platform does not support a volume size over 2TB\n");
2cc699af
CA		 7059 return 0;
7060 }
614902f6 7061
6592ce37
DW		 7062 return 1;
7063}
7064
1011e834 7065/* validate_geometry_imsm_volume - lifted from validate_geometry_ddf_bvd
c2c087e6
DW		 7066 * FIX ME add ahci details
7067 */
8b353278 7068static int validate_geometry_imsm_volume(struct supertype *st, int level,
c21e737b 7069 int layout, int raiddisks, int *chunk,
af4348dd
N		 7070 unsigned long long size,
7071 unsigned long long data_offset,
7072 char *dev,
2c514b71
NB		 7073 unsigned long long *freesize,
7074 int verbose)
cdddbdbc 7075{
9e04ac1c 7076 dev_t rdev;
c2c087e6 7077 struct intel_super *super = st->sb;
b2916f25 7078 struct imsm_super *mpb;
c2c087e6
DW		 7079 struct dl *dl;
7080 unsigned long long pos = 0;
7081 unsigned long long maxsize;
7082 struct extent *e;
7083 int i;
cdddbdbc 7084
88c32bb1
DW		 7085 /* We must have the container info already read in. */
7086 if (!super)
c2c087e6
DW		 7087 return 0;
7088
b2916f25
JS		 7089 mpb = super->anchor;
7090
2cc699af 7091 if (!validate_geometry_imsm_orom(super, level, layout, raiddisks, chunk, size, verbose)) {
7a862a02 7092 pr_err("RAID gemetry validation failed. Cannot proceed with the action(s).\n");
c2c087e6 7093 return 0;
d54559f0 7094 }
c2c087e6
DW		 7095 if (!dev) {
7096 /* General test: make sure there is space for
2da8544a
DW		 7097 * 'raiddisks' device extents of size 'size' at a given
7098 * offset
c2c087e6 7099 */
e46273eb 7100 unsigned long long minsize = size;
b7528a20 7101 unsigned long long start_offset = MaxSector;
c2c087e6
DW		 7102 int dcnt = 0;
7103 if (minsize == 0)
7104 minsize = MPB_SECTOR_CNT + IMSM_RESERVED_SECTORS;
7105 for (dl = super->disks; dl ; dl = dl->next) {
7106 int found = 0;
7107
bf5a934a 7108 pos = 0;
c2c087e6
DW		 7109 i = 0;
7110 e = get_extents(super, dl);
7111 if (!e) continue;
7112 do {
7113 unsigned long long esize;
7114 esize = e[i].start - pos;
7115 if (esize >= minsize)
7116 found = 1;
b7528a20 7117 if (found && start_offset == MaxSector) {
2da8544a
DW		 7118 start_offset = pos;
7119 break;
7120 } else if (found && pos != start_offset) {
7121 found = 0;
7122 break;
7123 }
c2c087e6
DW		 7124 pos = e[i].start + e[i].size;
7125 i++;
7126 } while (e[i-1].size);
7127 if (found)
7128 dcnt++;
7129 free(e);
7130 }
7131 if (dcnt < raiddisks) {
2c514b71 7132 if (verbose)
7a862a02 7133 pr_err("imsm: Not enough devices with space for this array (%d < %d)\n",
2c514b71 7134 dcnt, raiddisks);
c2c087e6
DW		 7135 return 0;
7136 }
7137 return 1;
7138 }
0dcecb2e 7139
c2c087e6 7140 /* This device must be a member of the set */
9e04ac1c 7141 if (!stat_is_blkdev(dev, &rdev))
c2c087e6
DW		 7142 return 0;
7143 for (dl = super->disks ; dl ; dl = dl->next) {
9e04ac1c
ZL		 7144 if (dl->major == (int)major(rdev) &&
7145 dl->minor == (int)minor(rdev))
c2c087e6
DW		 7146 break;
7147 }
7148 if (!dl) {
2c514b71 7149 if (verbose)
7a862a02 7150 pr_err("%s is not in the same imsm set\n", dev);
c2c087e6 7151 return 0;
a20d2ba5
DW		 7152 } else if (super->orom && dl->index < 0 && mpb->num_raid_devs) {
7153 /* If a volume is present then the current creation attempt
7154 * cannot incorporate new spares because the orom may not
7155 * understand this configuration (all member disks must be
7156 * members of each array in the container).
7157 */
7a862a02
N		 7158 pr_err("%s is a spare and a volume is already defined for this container\n", dev);
7159 pr_err("The option-rom requires all member disks to be a member of all volumes\n");
a20d2ba5 7160 return 0;
5fe62b94
WD		 7161 } else if (super->orom && mpb->num_raid_devs > 0 &&
7162 mpb->num_disks != raiddisks) {
7a862a02 7163 pr_err("The option-rom requires all member disks to be a member of all volumes\n");
5fe62b94 7164 return 0;
c2c087e6 7165 }
0dcecb2e
DW		 7166
7167 /* retrieve the largest free space block */
c2c087e6
DW		 7168 e = get_extents(super, dl);
7169 maxsize = 0;
7170 i = 0;
0dcecb2e
DW		 7171 if (e) {
7172 do {
7173 unsigned long long esize;
7174
7175 esize = e[i].start - pos;
7176 if (esize >= maxsize)
7177 maxsize = esize;
7178 pos = e[i].start + e[i].size;
7179 i++;
7180 } while (e[i-1].size);
7181 dl->e = e;
7182 dl->extent_cnt = i;
7183 } else {
7184 if (verbose)
e7b84f9d 7185 pr_err("unable to determine free space for: %s\n",
0dcecb2e
DW		 7186 dev);
7187 return 0;
7188 }
7189 if (maxsize < size) {
7190 if (verbose)
e7b84f9d 7191 pr_err("%s not enough space (%llu < %llu)\n",
0dcecb2e
DW		 7192 dev, maxsize, size);
7193 return 0;
7194 }
7195
7196 /* count total number of extents for merge */
7197 i = 0;
7198 for (dl = super->disks; dl; dl = dl->next)
7199 if (dl->e)
7200 i += dl->extent_cnt;
7201
7202 maxsize = merge_extents(super, i);
3baa56ab
LO		 7203
7204 if (!check_env("IMSM_NO_PLATFORM") &&
7205 mpb->num_raid_devs > 0 && size && size != maxsize) {
7a862a02 7206 pr_err("attempting to create a second volume with size less then remaining space. Aborting...\n");
3baa56ab
LO		 7207 return 0;
7208 }
7209
a7dd165b 7210 if (maxsize < size || maxsize == 0) {
b3071342
LD		 7211 if (verbose) {
7212 if (maxsize == 0)
7a862a02 7213 pr_err("no free space left on device. Aborting...\n");
b3071342 7214 else
7a862a02 7215 pr_err("not enough space to create volume of given size (%llu < %llu). Aborting...\n",
b3071342
LD		 7216 maxsize, size);
7217 }
0dcecb2e 7218 return 0;
0dcecb2e
DW		 7219 }
7220
c2c087e6
DW		 7221 *freesize = maxsize;
7222
ca9de185 7223 if (super->orom) {
72a45777 7224 int count = count_volumes(super->hba,
ca9de185
LM		 7225 super->orom->dpa, verbose);
7226 if (super->orom->vphba <= count) {
676e87a8 7227 pr_vrb("platform does not support more than %d raid volumes.\n",
ca9de185
LM		 7228 super->orom->vphba);
7229 return 0;
7230 }
7231 }
c2c087e6 7232 return 1;
cdddbdbc
DW		 7233}
7234
13bcac90 7235static int imsm_get_free_size(struct supertype *st, int raiddisks,
efb30e7f
DW		 7236 unsigned long long size, int chunk,
7237 unsigned long long *freesize)
7238{
7239 struct intel_super *super = st->sb;
7240 struct imsm_super *mpb = super->anchor;
7241 struct dl *dl;
7242 int i;
7243 int extent_cnt;
7244 struct extent *e;
7245 unsigned long long maxsize;
7246 unsigned long long minsize;
7247 int cnt;
7248 int used;
7249
7250 /* find the largest common start free region of the possible disks */
7251 used = 0;
7252 extent_cnt = 0;
7253 cnt = 0;
7254 for (dl = super->disks; dl; dl = dl->next) {
7255 dl->raiddisk = -1;
7256
7257 if (dl->index >= 0)
7258 used++;
7259
7260 /* don't activate new spares if we are orom constrained
7261 * and there is already a volume active in the container
7262 */
7263 if (super->orom && dl->index < 0 && mpb->num_raid_devs)
7264 continue;
7265
7266 e = get_extents(super, dl);
7267 if (!e)
7268 continue;
7269 for (i = 1; e[i-1].size; i++)
7270 ;
7271 dl->e = e;
7272 dl->extent_cnt = i;
7273 extent_cnt += i;
7274 cnt++;
7275 }
7276
7277 maxsize = merge_extents(super, extent_cnt);
7278 minsize = size;
7279 if (size == 0)
612e59d8
CA		 7280 /* chunk is in K */
7281 minsize = chunk * 2;
efb30e7f
DW		 7282
7283 if (cnt < raiddisks ||
7284 (super->orom && used && used != raiddisks) ||
a7dd165b
DW		 7285 maxsize < minsize ||
7286 maxsize == 0) {
e7b84f9d 7287 pr_err("not enough devices with space to create array.\n");
efb30e7f
DW		 7288 return 0; /* No enough free spaces large enough */
7289 }
7290
7291 if (size == 0) {
7292 size = maxsize;
7293 if (chunk) {
612e59d8
CA		 7294 size /= 2 * chunk;
7295 size *= 2 * chunk;
efb30e7f 7296 }
f878b242
LM		 7297 maxsize = size;
7298 }
7299 if (!check_env("IMSM_NO_PLATFORM") &&
7300 mpb->num_raid_devs > 0 && size && size != maxsize) {
7a862a02 7301 pr_err("attempting to create a second volume with size less then remaining space. Aborting...\n");
f878b242 7302 return 0;
efb30e7f 7303 }
efb30e7f
DW		 7304 cnt = 0;
7305 for (dl = super->disks; dl; dl = dl->next)
7306 if (dl->e)
7307 dl->raiddisk = cnt++;
7308
7309 *freesize = size;
7310
13bcac90
AK		 7311 dprintf("imsm: imsm_get_free_size() returns : %llu\n", size);
7312
efb30e7f
DW		 7313 return 1;
7314}
7315
13bcac90
AK		 7316static int reserve_space(struct supertype *st, int raiddisks,
7317 unsigned long long size, int chunk,
7318 unsigned long long *freesize)
7319{
7320 struct intel_super *super = st->sb;
7321 struct dl *dl;
7322 int cnt;
7323 int rv = 0;
7324
7325 rv = imsm_get_free_size(st, raiddisks, size, chunk, freesize);
7326 if (rv) {
7327 cnt = 0;
7328 for (dl = super->disks; dl; dl = dl->next)
7329 if (dl->e)
7330 dl->raiddisk = cnt++;
7331 rv = 1;
7332 }
7333
7334 return rv;
7335}
7336
bf5a934a 7337static int validate_geometry_imsm(struct supertype *st, int level, int layout,
c21e737b 7338 int raiddisks, int *chunk, unsigned long long size,
af4348dd 7339 unsigned long long data_offset,
bf5a934a 7340 char *dev, unsigned long long *freesize,
5308f117 7341 int consistency_policy, int verbose)
bf5a934a
DW		 7342{
7343 int fd, cfd;
7344 struct mdinfo *sra;
20cbe8d2 7345 int is_member = 0;
bf5a934a 7346
d54559f0
LM		 7347 /* load capability
7348 * if given unused devices create a container
bf5a934a
DW		 7349 * if given given devices in a container create a member volume
7350 */
7351 if (level == LEVEL_CONTAINER) {
7352 /* Must be a fresh device to add to a container */
7353 return validate_geometry_imsm_container(st, level, layout,
c21e737b 7354 raiddisks,
7ccc4cc4 7355 *chunk,
af4348dd 7356 size, data_offset,
bf5a934a
DW		 7357 dev, freesize,
7358 verbose);
7359 }
9587c373 7360
8592f29d 7361 if (!dev) {
e91a3bad 7362 if (st->sb) {
ca9de185 7363 struct intel_super *super = st->sb;
e91a3bad 7364 if (!validate_geometry_imsm_orom(st->sb, level, layout,
2cc699af 7365 raiddisks, chunk, size,
e91a3bad
LM		 7366 verbose))
7367 return 0;
efb30e7f
DW		 7368 /* we are being asked to automatically layout a
7369 * new volume based on the current contents of
7370 * the container. If the the parameters can be
7371 * satisfied reserve_space will record the disks,
7372 * start offset, and size of the volume to be
7373 * created. add_to_super and getinfo_super
7374 * detect when autolayout is in progress.
7375 */
ca9de185
LM		 7376 /* assuming that freesize is always given when array is
7377 created */
7378 if (super->orom && freesize) {
7379 int count;
72a45777 7380 count = count_volumes(super->hba,
ca9de185
LM		 7381 super->orom->dpa, verbose);
7382 if (super->orom->vphba <= count) {
676e87a8 7383 pr_vrb("platform does not support more than %d raid volumes.\n",
ca9de185
LM		 7384 super->orom->vphba);
7385 return 0;
7386 }
7387 }
e91a3bad
LM		 7388 if (freesize)
7389 return reserve_space(st, raiddisks, size,
7ccc4cc4 7390 *chunk, freesize);
8592f29d
N		 7391 }
7392 return 1;
7393 }
bf5a934a
DW		 7394 if (st->sb) {
7395 /* creating in a given container */
7396 return validate_geometry_imsm_volume(st, level, layout,
7397 raiddisks, chunk, size,
af4348dd 7398 data_offset,
bf5a934a
DW		 7399 dev, freesize, verbose);
7400 }
7401
bf5a934a
DW		 7402 /* This device needs to be a device in an 'imsm' container */
7403 fd = open(dev, O_RDONLY|O_EXCL, 0);
7404 if (fd >= 0) {
7405 if (verbose)
e7b84f9d
N		 7406 pr_err("Cannot create this array on device %s\n",
7407 dev);
bf5a934a
DW		 7408 close(fd);
7409 return 0;
7410 }
7411 if (errno != EBUSY || (fd = open(dev, O_RDONLY, 0)) < 0) {
7412 if (verbose)
e7b84f9d 7413 pr_err("Cannot open %s: %s\n",
bf5a934a
DW		 7414 dev, strerror(errno));
7415 return 0;
7416 }
7417 /* Well, it is in use by someone, maybe an 'imsm' container. */
7418 cfd = open_container(fd);
20cbe8d2 7419 close(fd);
bf5a934a 7420 if (cfd < 0) {
bf5a934a 7421 if (verbose)
e7b84f9d 7422 pr_err("Cannot use %s: It is busy\n",
bf5a934a
DW		 7423 dev);
7424 return 0;
7425 }
4dd2df09 7426 sra = sysfs_read(cfd, NULL, GET_VERSION);
bf5a934a 7427 if (sra && sra->array.major_version == -1 &&
20cbe8d2
AW		 7428 strcmp(sra->text_version, "imsm") == 0)
7429 is_member = 1;
7430 sysfs_free(sra);
7431 if (is_member) {
bf5a934a
DW		 7432 /* This is a member of a imsm container. Load the container
7433 * and try to create a volume
7434 */
7435 struct intel_super *super;
7436
ec50f7b6 7437 if (load_super_imsm_all(st, cfd, (void **) &super, NULL, NULL, 1) == 0) {
bf5a934a 7438 st->sb = super;
4dd2df09 7439 strcpy(st->container_devnm, fd2devnm(cfd));
bf5a934a
DW		 7440 close(cfd);
7441 return validate_geometry_imsm_volume(st, level, layout,
7442 raiddisks, chunk,
af4348dd 7443 size, data_offset, dev,
ecbd9e81
N		 7444 freesize, 1)
7445 ? 1 : -1;
bf5a934a 7446 }
20cbe8d2 7447 }
bf5a934a 7448
20cbe8d2 7449 if (verbose)
e7b84f9d 7450 pr_err("failed container membership check\n");
20cbe8d2
AW		 7451
7452 close(cfd);
7453 return 0;
bf5a934a 7454}
0bd16cf2 7455
30f58b22 7456static void default_geometry_imsm(struct supertype *st, int *level, int *layout, int *chunk)
0bd16cf2
DJ		 7457{
7458 struct intel_super *super = st->sb;
7459
30f58b22
DW		 7460 if (level && *level == UnSet)
7461 *level = LEVEL_CONTAINER;
7462
7463 if (level && layout && *layout == UnSet)
7464 *layout = imsm_level_to_layout(*level);
0bd16cf2 7465
cd9d1ac7
DW		 7466 if (chunk && (*chunk == UnSet || *chunk == 0))
7467 *chunk = imsm_default_chunk(super->orom);
0bd16cf2
DJ		 7468}
7469
33414a01
DW		 7470static void handle_missing(struct intel_super *super, struct imsm_dev *dev);
7471
7472static int kill_subarray_imsm(struct supertype *st)
7473{
7474 /* remove the subarray currently referenced by ->current_vol */
7475 __u8 i;
7476 struct intel_dev **dp;
7477 struct intel_super *super = st->sb;
7478 __u8 current_vol = super->current_vol;
7479 struct imsm_super *mpb = super->anchor;
7480
7481 if (super->current_vol < 0)
7482 return 2;
7483 super->current_vol = -1; /* invalidate subarray cursor */
7484
7485 /* block deletions that would change the uuid of active subarrays
7486 *
7487 * FIXME when immutable ids are available, but note that we'll
7488 * also need to fixup the invalidated/active subarray indexes in
7489 * mdstat
7490 */
7491 for (i = 0; i < mpb->num_raid_devs; i++) {
7492 char subarray[4];
7493
7494 if (i < current_vol)
7495 continue;
7496 sprintf(subarray, "%u", i);
4dd2df09 7497 if (is_subarray_active(subarray, st->devnm)) {
e7b84f9d
N		 7498 pr_err("deleting subarray-%d would change the UUID of active subarray-%d, aborting\n",
7499 current_vol, i);
33414a01
DW		 7500
7501 return 2;
7502 }
7503 }
7504
7505 if (st->update_tail) {
503975b9 7506 struct imsm_update_kill_array *u = xmalloc(sizeof(*u));
33414a01 7507
33414a01
DW		 7508 u->type = update_kill_array;
7509 u->dev_idx = current_vol;
7510 append_metadata_update(st, u, sizeof(*u));
7511
7512 return 0;
7513 }
7514
7515 for (dp = &super->devlist; *dp;)
7516 if ((*dp)->index == current_vol) {
7517 *dp = (*dp)->next;
7518 } else {
7519 handle_missing(super, (*dp)->dev);
7520 if ((*dp)->index > current_vol)
7521 (*dp)->index--;
7522 dp = &(*dp)->next;
7523 }
7524
7525 /* no more raid devices, all active components are now spares,
7526 * but of course failed are still failed
7527 */
7528 if (--mpb->num_raid_devs == 0) {
7529 struct dl *d;
7530
7531 for (d = super->disks; d; d = d->next)
a8619d23
AK		 7532 if (d->index > -2)
7533 mark_spare(d);
33414a01
DW		 7534 }
7535
7536 super->updates_pending++;
7537
7538 return 0;
7539}
aa534678 7540
a951a4f7 7541static int update_subarray_imsm(struct supertype *st, char *subarray,
fa56eddb 7542 char *update, struct mddev_ident *ident)
aa534678
DW		 7543{
7544 /* update the subarray currently referenced by ->current_vol */
7545 struct intel_super *super = st->sb;
7546 struct imsm_super *mpb = super->anchor;
7547
aa534678
DW		 7548 if (strcmp(update, "name") == 0) {
7549 char *name = ident->name;
a951a4f7
N		 7550 char *ep;
7551 int vol;
aa534678 7552
4dd2df09 7553 if (is_subarray_active(subarray, st->devnm)) {
e7b84f9d 7554 pr_err("Unable to update name of active subarray\n");
aa534678
DW		 7555 return 2;
7556 }
7557
7558 if (!check_name(super, name, 0))
7559 return 2;
7560
a951a4f7
N		 7561 vol = strtoul(subarray, &ep, 10);
7562 if (*ep != '\0' || vol >= super->anchor->num_raid_devs)
7563 return 2;
7564
aa534678 7565 if (st->update_tail) {
503975b9 7566 struct imsm_update_rename_array *u = xmalloc(sizeof(*u));
aa534678 7567
aa534678 7568 u->type = update_rename_array;
a951a4f7 7569 u->dev_idx = vol;
618f4e6d
XN		 7570 strncpy((char *) u->name, name, MAX_RAID_SERIAL_LEN);
7571 u->name[MAX_RAID_SERIAL_LEN-1] = '\0';
aa534678
DW		 7572 append_metadata_update(st, u, sizeof(*u));
7573 } else {
7574 struct imsm_dev *dev;
7575 int i;
7576
a951a4f7 7577 dev = get_imsm_dev(super, vol);
618f4e6d
XN		 7578 strncpy((char *) dev->volume, name, MAX_RAID_SERIAL_LEN);
7579 dev->volume[MAX_RAID_SERIAL_LEN-1] = '\0';
aa534678
DW		 7580 for (i = 0; i < mpb->num_raid_devs; i++) {
7581 dev = get_imsm_dev(super, i);
7582 handle_missing(super, dev);
7583 }
7584 super->updates_pending++;
7585 }
e6e9dd3f
AP		 7586 } else if (strcmp(update, "ppl") == 0 ||
7587 strcmp(update, "no-ppl") == 0) {
7588 int new_policy;
7589 char *ep;
7590 int vol = strtoul(subarray, &ep, 10);
7591
7592 if (*ep != '\0' || vol >= super->anchor->num_raid_devs)
7593 return 2;
7594
7595 if (strcmp(update, "ppl") == 0)
c2462068 7596 new_policy = RWH_MULTIPLE_DISTRIBUTED;
e6e9dd3f 7597 else
c2462068 7598 new_policy = RWH_MULTIPLE_OFF;
e6e9dd3f
AP		 7599
7600 if (st->update_tail) {
7601 struct imsm_update_rwh_policy *u = xmalloc(sizeof(*u));
7602
7603 u->type = update_rwh_policy;
7604 u->dev_idx = vol;
7605 u->new_policy = new_policy;
7606 append_metadata_update(st, u, sizeof(*u));
7607 } else {
7608 struct imsm_dev *dev;
7609
7610 dev = get_imsm_dev(super, vol);
7611 dev->rwh_policy = new_policy;
7612 super->updates_pending++;
7613 }
aa534678
DW		 7614 } else
7615 return 2;
7616
7617 return 0;
7618}
bf5a934a 7619
28bce06f
AK		 7620static int is_gen_migration(struct imsm_dev *dev)
7621{
7534230b
AK		 7622 if (dev == NULL)
7623 return 0;
7624
28bce06f
AK		 7625 if (!dev->vol.migr_state)
7626 return 0;
7627
7628 if (migr_type(dev) == MIGR_GEN_MIGR)
7629 return 1;
7630
7631 return 0;
7632}
7633
1e5c6983
DW		 7634static int is_rebuilding(struct imsm_dev *dev)
7635{
7636 struct imsm_map *migr_map;
7637
7638 if (!dev->vol.migr_state)
7639 return 0;
7640
7641 if (migr_type(dev) != MIGR_REBUILD)
7642 return 0;
7643
238c0a71 7644 migr_map = get_imsm_map(dev, MAP_1);
1e5c6983
DW		 7645
7646 if (migr_map->map_state == IMSM_T_STATE_DEGRADED)
7647 return 1;
7648 else
7649 return 0;
7650}
7651
6ce1fbf1
AK		 7652static int is_initializing(struct imsm_dev *dev)
7653{
7654 struct imsm_map *migr_map;
7655
7656 if (!dev->vol.migr_state)
7657 return 0;
7658
7659 if (migr_type(dev) != MIGR_INIT)
7660 return 0;
7661
238c0a71 7662 migr_map = get_imsm_map(dev, MAP_1);
6ce1fbf1
AK		 7663
7664 if (migr_map->map_state == IMSM_T_STATE_UNINITIALIZED)
7665 return 1;
7666
7667 return 0;
6ce1fbf1
AK		 7668}
7669
c47b0ff6
AK		 7670static void update_recovery_start(struct intel_super *super,
7671 struct imsm_dev *dev,
7672 struct mdinfo *array)
1e5c6983
DW		 7673{
7674 struct mdinfo *rebuild = NULL;
7675 struct mdinfo *d;
7676 __u32 units;
7677
7678 if (!is_rebuilding(dev))
7679 return;
7680
7681 /* Find the rebuild target, but punt on the dual rebuild case */
7682 for (d = array->devs; d; d = d->next)
7683 if (d->recovery_start == 0) {
7684 if (rebuild)
7685 return;
7686 rebuild = d;
7687 }
7688
4363fd80
DW		 7689 if (!rebuild) {
7690 /* (?) none of the disks are marked with
7691 * IMSM_ORD_REBUILD, so assume they are missing and the
7692 * disk_ord_tbl was not correctly updated
7693 */
1ade5cc1 7694 dprintf("failed to locate out-of-sync disk\n");
4363fd80
DW		 7695 return;
7696 }
7697
1e5c6983 7698 units = __le32_to_cpu(dev->vol.curr_migr_unit);
c47b0ff6 7699 rebuild->recovery_start = units * blocks_per_migr_unit(super, dev);
1e5c6983
DW		 7700}
7701
276d77db 7702static int recover_backup_imsm(struct supertype *st, struct mdinfo *info);
1e5c6983 7703
00bbdbda 7704static struct mdinfo *container_content_imsm(struct supertype *st, char *subarray)
cdddbdbc 7705{
4f5bc454
DW		 7706 /* Given a container loaded by load_super_imsm_all,
7707 * extract information about all the arrays into
7708 * an mdinfo tree.
00bbdbda 7709 * If 'subarray' is given, just extract info about that array.
4f5bc454
DW		 7710 *
7711 * For each imsm_dev create an mdinfo, fill it in,
7712 * then look for matching devices in super->disks
7713 * and create appropriate device mdinfo.
7714 */
7715 struct intel_super *super = st->sb;
949c47a0 7716 struct imsm_super *mpb = super->anchor;
4f5bc454 7717 struct mdinfo *rest = NULL;
00bbdbda 7718 unsigned int i;
81219e70 7719 int sb_errors = 0;
abef11a3
AK		 7720 struct dl *d;
7721 int spare_disks = 0;
cdddbdbc 7722
19482bcc
AK		 7723 /* do not assemble arrays when not all attributes are supported */
7724 if (imsm_check_attributes(mpb->attributes) == 0) {
81219e70 7725 sb_errors = 1;
7a862a02 7726 pr_err("Unsupported attributes in IMSM metadata.Arrays activation is blocked.\n");
19482bcc
AK		 7727 }
7728
abef11a3
AK		 7729 /* count spare devices, not used in maps
7730 */
7731 for (d = super->disks; d; d = d->next)
7732 if (d->index == -1)
7733 spare_disks++;
7734
4f5bc454 7735 for (i = 0; i < mpb->num_raid_devs; i++) {
00bbdbda
N		 7736 struct imsm_dev *dev;
7737 struct imsm_map *map;
86e3692b 7738 struct imsm_map *map2;
4f5bc454 7739 struct mdinfo *this;
a6482415 7740 int slot;
a6482415 7741 int chunk;
00bbdbda 7742 char *ep;
8b9cd157 7743 int level;
00bbdbda
N		 7744
7745 if (subarray &&
7746 (i != strtoul(subarray, &ep, 10) || *ep != '\0'))
7747 continue;
7748
7749 dev = get_imsm_dev(super, i);
238c0a71
AK		 7750 map = get_imsm_map(dev, MAP_0);
7751 map2 = get_imsm_map(dev, MAP_1);
8b9cd157 7752 level = get_imsm_raid_level(map);
4f5bc454 7753
1ce0101c
DW		 7754 /* do not publish arrays that are in the middle of an
7755 * unsupported migration
7756 */
7757 if (dev->vol.migr_state &&
28bce06f 7758 (migr_type(dev) == MIGR_STATE_CHANGE)) {
7a862a02 7759 pr_err("cannot assemble volume '%.16s': unsupported migration in progress\n",
1ce0101c
DW		 7760 dev->volume);
7761 continue;
7762 }
2db86302
LM		 7763 /* do not publish arrays that are not support by controller's
7764 * OROM/EFI
7765 */
1ce0101c 7766
503975b9 7767 this = xmalloc(sizeof(*this));
4f5bc454 7768
301406c9 7769 super->current_vol = i;
a5d85af7 7770 getinfo_super_imsm_volume(st, this, NULL);
9894ec0d 7771 this->next = rest;
a6482415 7772 chunk = __le16_to_cpu(map->blocks_per_strip) >> 1;
81219e70
LM		 7773 /* mdadm does not support all metadata features- set the bit in all arrays state */
7774 if (!validate_geometry_imsm_orom(super,
8b9cd157
MK		 7775 level, /* RAID level */
7776 imsm_level_to_layout(level),
81219e70 7777 map->num_members, /* raid disks */
fcc2c9da 7778 &chunk, imsm_dev_size(dev),
81219e70 7779 1 /* verbose */)) {
7a862a02 7780 pr_err("IMSM RAID geometry validation failed. Array %s activation is blocked.\n",
81219e70
LM		 7781 dev->volume);
7782 this->array.state |=
7783 (1<<MD_SB_BLOCK_CONTAINER_RESHAPE) |
7784 (1<<MD_SB_BLOCK_VOLUME);
7785 }
81219e70
LM		 7786
7787 /* if array has bad blocks, set suitable bit in all arrays state */
7788 if (sb_errors)
7789 this->array.state |=
7790 (1<<MD_SB_BLOCK_CONTAINER_RESHAPE) |
7791 (1<<MD_SB_BLOCK_VOLUME);
7792
4f5bc454 7793 for (slot = 0 ; slot < map->num_members; slot++) {
1e5c6983 7794 unsigned long long recovery_start;
4f5bc454
DW		 7795 struct mdinfo *info_d;
7796 struct dl *d;
7797 int idx;
9a1608e5 7798 int skip;
7eef0453 7799 __u32 ord;
8b9cd157 7800 int missing = 0;
4f5bc454 7801
9a1608e5 7802 skip = 0;
238c0a71
AK		 7803 idx = get_imsm_disk_idx(dev, slot, MAP_0);
7804 ord = get_imsm_ord_tbl_ent(dev, slot, MAP_X);
4f5bc454
DW		 7805 for (d = super->disks; d ; d = d->next)
7806 if (d->index == idx)
0fbd635c 7807 break;
4f5bc454 7808
1e5c6983 7809 recovery_start = MaxSector;
4f5bc454 7810 if (d == NULL)
9a1608e5 7811 skip = 1;
25ed7e59 7812 if (d && is_failed(&d->disk))
9a1608e5 7813 skip = 1;
8b9cd157 7814 if (!skip && (ord & IMSM_ORD_REBUILD))
1e5c6983 7815 recovery_start = 0;
9a1608e5 7816
1011e834 7817 /*
9a1608e5 7818 * if we skip some disks the array will be assmebled degraded;
1e5c6983
DW		 7819 * reset resync start to avoid a dirty-degraded
7820 * situation when performing the intial sync
9a1608e5 7821 */
8b9cd157
MK		 7822 if (skip)
7823 missing++;
7824
7825 if (!(dev->vol.dirty & RAIDVOL_DIRTY)) {
7826 if ((!able_to_resync(level, missing) ||
7827 recovery_start == 0))
7828 this->resync_start = MaxSector;
7829 } else {
7830 /*
7831 * FIXME handle dirty degraded
7832 */
7833 }
7834
9a1608e5
DW		 7835 if (skip)
7836 continue;
4f5bc454 7837
503975b9 7838 info_d = xcalloc(1, sizeof(*info_d));
4f5bc454
DW		 7839 info_d->next = this->devs;
7840 this->devs = info_d;
7841
4f5bc454
DW		 7842 info_d->disk.number = d->index;
7843 info_d->disk.major = d->major;
7844 info_d->disk.minor = d->minor;
7845 info_d->disk.raid_disk = slot;
1e5c6983 7846 info_d->recovery_start = recovery_start;
86e3692b
AK		 7847 if (map2) {
7848 if (slot < map2->num_members)
7849 info_d->disk.state = (1 << MD_DISK_ACTIVE);
04c3c514
AK		 7850 else
7851 this->array.spare_disks++;
86e3692b
AK		 7852 } else {
7853 if (slot < map->num_members)
7854 info_d->disk.state = (1 << MD_DISK_ACTIVE);
04c3c514
AK		 7855 else
7856 this->array.spare_disks++;
86e3692b 7857 }
1e5c6983
DW		 7858 if (info_d->recovery_start == MaxSector)
7859 this->array.working_disks++;
4f5bc454
DW		 7860
7861 info_d->events = __le32_to_cpu(mpb->generation_num);
5551b113 7862 info_d->data_offset = pba_of_lba0(map);
44490938 7863 info_d->component_size = calc_component_size(map, dev);
06fb291a
PB		 7864
7865 if (map->raid_level == 5) {
2432ce9b
AP		 7866 info_d->ppl_sector = this->ppl_sector;
7867 info_d->ppl_size = this->ppl_size;
98e96bdb
AP		 7868 if (this->consistency_policy == CONSISTENCY_POLICY_PPL &&
7869 recovery_start == 0)
7870 this->resync_start = 0;
06fb291a 7871 }
b12796be 7872
5e46202e 7873 info_d->bb.supported = 1;
b12796be
TM		 7874 get_volume_badblocks(super->bbm_log, ord_to_idx(ord),
7875 info_d->data_offset,
7876 info_d->component_size,
7877 &info_d->bb);
4f5bc454 7878 }
1e5c6983 7879 /* now that the disk list is up-to-date fixup recovery_start */
c47b0ff6 7880 update_recovery_start(super, dev, this);
abef11a3 7881 this->array.spare_disks += spare_disks;
276d77db
AK		 7882
7883 /* check for reshape */
7884 if (this->reshape_active == 1)
7885 recover_backup_imsm(st, this);
9a1608e5 7886 rest = this;
4f5bc454
DW		 7887 }
7888
7889 return rest;
cdddbdbc
DW		 7890}
7891
3b451610
AK		 7892static __u8 imsm_check_degraded(struct intel_super *super, struct imsm_dev *dev,
7893 int failed, int look_in_map)
c2a1e7da 7894{
3b451610
AK		 7895 struct imsm_map *map;
7896
7897 map = get_imsm_map(dev, look_in_map);
c2a1e7da
DW		 7898
7899 if (!failed)
1011e834 7900 return map->map_state == IMSM_T_STATE_UNINITIALIZED ?
3393c6af 7901 IMSM_T_STATE_UNINITIALIZED : IMSM_T_STATE_NORMAL;
c2a1e7da
DW		 7902
7903 switch (get_imsm_raid_level(map)) {
7904 case 0:
7905 return IMSM_T_STATE_FAILED;
7906 break;
7907 case 1:
7908 if (failed < map->num_members)
7909 return IMSM_T_STATE_DEGRADED;
7910 else
7911 return IMSM_T_STATE_FAILED;
7912 break;
7913 case 10:
7914 {
7915 /**
c92a2527
DW		 7916 * check to see if any mirrors have failed, otherwise we
7917 * are degraded. Even numbered slots are mirrored on
7918 * slot+1
c2a1e7da 7919 */
c2a1e7da 7920 int i;
d9b420a5
N		 7921 /* gcc -Os complains that this is unused */
7922 int insync = insync;
c2a1e7da
DW		 7923
7924 for (i = 0; i < map->num_members; i++) {
238c0a71 7925 __u32 ord = get_imsm_ord_tbl_ent(dev, i, MAP_X);
c92a2527
DW		 7926 int idx = ord_to_idx(ord);
7927 struct imsm_disk *disk;
c2a1e7da 7928
c92a2527 7929 /* reset the potential in-sync count on even-numbered
1011e834 7930 * slots. num_copies is always 2 for imsm raid10
c92a2527
DW		 7931 */
7932 if ((i & 1) == 0)
7933 insync = 2;
c2a1e7da 7934
c92a2527 7935 disk = get_imsm_disk(super, idx);
25ed7e59 7936 if (!disk || is_failed(disk) || ord & IMSM_ORD_REBUILD)
c92a2527 7937 insync--;
c2a1e7da 7938
c92a2527
DW		 7939 /* no in-sync disks left in this mirror the
7940 * array has failed
7941 */
7942 if (insync == 0)
7943 return IMSM_T_STATE_FAILED;
c2a1e7da
DW		 7944 }
7945
7946 return IMSM_T_STATE_DEGRADED;
7947 }
7948 case 5:
7949 if (failed < 2)
7950 return IMSM_T_STATE_DEGRADED;
7951 else
7952 return IMSM_T_STATE_FAILED;
7953 break;
7954 default:
7955 break;
7956 }
7957
7958 return map->map_state;
7959}
7960
3b451610
AK		 7961static int imsm_count_failed(struct intel_super *super, struct imsm_dev *dev,
7962 int look_in_map)
c2a1e7da
DW		 7963{
7964 int i;
7965 int failed = 0;
7966 struct imsm_disk *disk;
d5985138
AK		 7967 struct imsm_map *map = get_imsm_map(dev, MAP_0);
7968 struct imsm_map *prev = get_imsm_map(dev, MAP_1);
68fe4598 7969 struct imsm_map *map_for_loop;
0556e1a2
DW		 7970 __u32 ord;
7971 int idx;
d5985138 7972 int idx_1;
c2a1e7da 7973
0556e1a2
DW		 7974 /* at the beginning of migration we set IMSM_ORD_REBUILD on
7975 * disks that are being rebuilt. New failures are recorded to
7976 * map[0]. So we look through all the disks we started with and
7977 * see if any failures are still present, or if any new ones
7978 * have arrived
0556e1a2 7979 */
d5985138
AK		 7980 map_for_loop = map;
7981 if (prev && (map->num_members < prev->num_members))
7982 map_for_loop = prev;
68fe4598
LD		 7983
7984 for (i = 0; i < map_for_loop->num_members; i++) {
d5985138 7985 idx_1 = -255;
238c0a71
AK		 7986 /* when MAP_X is passed both maps failures are counted
7987 */
d5985138 7988 if (prev &&
089f9d79
JS		 7989 (look_in_map == MAP_1 || look_in_map == MAP_X) &&
7990 i < prev->num_members) {
d5985138
AK		 7991 ord = __le32_to_cpu(prev->disk_ord_tbl[i]);
7992 idx_1 = ord_to_idx(ord);
c2a1e7da 7993
d5985138
AK		 7994 disk = get_imsm_disk(super, idx_1);
7995 if (!disk || is_failed(disk) || ord & IMSM_ORD_REBUILD)
7996 failed++;
7997 }
089f9d79
JS		 7998 if ((look_in_map == MAP_0 || look_in_map == MAP_X) &&
7999 i < map->num_members) {
d5985138
AK		 8000 ord = __le32_to_cpu(map->disk_ord_tbl[i]);
8001 idx = ord_to_idx(ord);
8002
8003 if (idx != idx_1) {
8004 disk = get_imsm_disk(super, idx);
8005 if (!disk || is_failed(disk) ||
8006 ord & IMSM_ORD_REBUILD)
8007 failed++;
8008 }
8009 }
c2a1e7da
DW		 8010 }
8011
8012 return failed;
845dea95
NB		 8013}
8014
97b4d0e9
DW		 8015static int imsm_open_new(struct supertype *c, struct active_array *a,
8016 char *inst)
8017{
8018 struct intel_super *super = c->sb;
8019 struct imsm_super *mpb = super->anchor;
bbab0940 8020 struct imsm_update_prealloc_bb_mem u;
9587c373 8021
97b4d0e9 8022 if (atoi(inst) >= mpb->num_raid_devs) {
1ade5cc1 8023 pr_err("subarry index %d, out of range\n", atoi(inst));
97b4d0e9
DW		 8024 return -ENODEV;
8025 }
8026
8027 dprintf("imsm: open_new %s\n", inst);
8028 a->info.container_member = atoi(inst);
bbab0940
TM		 8029
8030 u.type = update_prealloc_badblocks_mem;
8031 imsm_update_metadata_locally(c, &u, sizeof(u));
8032
97b4d0e9
DW		 8033 return 0;
8034}
8035
0c046afd
DW		 8036static int is_resyncing(struct imsm_dev *dev)
8037{
8038 struct imsm_map *migr_map;
8039
8040 if (!dev->vol.migr_state)
8041 return 0;
8042
1484e727
DW		 8043 if (migr_type(dev) == MIGR_INIT ||
8044 migr_type(dev) == MIGR_REPAIR)
0c046afd
DW		 8045 return 1;
8046
4c9bc37b
AK		 8047 if (migr_type(dev) == MIGR_GEN_MIGR)
8048 return 0;
8049
238c0a71 8050 migr_map = get_imsm_map(dev, MAP_1);
0c046afd 8051
089f9d79
JS		 8052 if (migr_map->map_state == IMSM_T_STATE_NORMAL &&
8053 dev->vol.migr_type != MIGR_GEN_MIGR)
0c046afd
DW		 8054 return 1;
8055 else
8056 return 0;
8057}
8058
0556e1a2 8059/* return true if we recorded new information */
4c9e8c1e
TM		 8060static int mark_failure(struct intel_super *super,
8061 struct imsm_dev *dev, struct imsm_disk *disk, int idx)
47ee5a45 8062{
0556e1a2
DW		 8063 __u32 ord;
8064 int slot;
8065 struct imsm_map *map;
86c54047
DW		 8066 char buf[MAX_RAID_SERIAL_LEN+3];
8067 unsigned int len, shift = 0;
0556e1a2
DW		 8068
8069 /* new failures are always set in map[0] */
238c0a71 8070 map = get_imsm_map(dev, MAP_0);
0556e1a2
DW		 8071
8072 slot = get_imsm_disk_slot(map, idx);
8073 if (slot < 0)
8074 return 0;
8075
8076 ord = __le32_to_cpu(map->disk_ord_tbl[slot]);
25ed7e59 8077 if (is_failed(disk) && (ord & IMSM_ORD_REBUILD))
0556e1a2
DW		 8078 return 0;
8079
7d0c5e24
LD		 8080 memcpy(buf, disk->serial, MAX_RAID_SERIAL_LEN);
8081 buf[MAX_RAID_SERIAL_LEN] = '\000';
8082 strcat(buf, ":0");
86c54047
DW		 8083 if ((len = strlen(buf)) >= MAX_RAID_SERIAL_LEN)
8084 shift = len - MAX_RAID_SERIAL_LEN + 1;
8085 strncpy((char *)disk->serial, &buf[shift], MAX_RAID_SERIAL_LEN);
8086
f2f27e63 8087 disk->status |= FAILED_DISK;
0556e1a2 8088 set_imsm_ord_tbl_ent(map, slot, idx | IMSM_ORD_REBUILD);
17788994
AK		 8089 /* mark failures in second map if second map exists and this disk
8090 * in this slot.
8091 * This is valid for migration, initialization and rebuild
8092 */
8093 if (dev->vol.migr_state) {
238c0a71 8094 struct imsm_map *map2 = get_imsm_map(dev, MAP_1);
0a108d63
AK		 8095 int slot2 = get_imsm_disk_slot(map2, idx);
8096
089f9d79 8097 if (slot2 < map2->num_members && slot2 >= 0)
0a108d63 8098 set_imsm_ord_tbl_ent(map2, slot2,
1ace8403
AK		 8099 idx | IMSM_ORD_REBUILD);
8100 }
f21e18ca 8101 if (map->failed_disk_num == 0xff)
0556e1a2 8102 map->failed_disk_num = slot;
4c9e8c1e
TM		 8103
8104 clear_disk_badblocks(super->bbm_log, ord_to_idx(ord));
8105
0556e1a2
DW		 8106 return 1;
8107}
8108
4c9e8c1e
TM		 8109static void mark_missing(struct intel_super *super,
8110 struct imsm_dev *dev, struct imsm_disk *disk, int idx)
0556e1a2 8111{
4c9e8c1e 8112 mark_failure(super, dev, disk, idx);
0556e1a2
DW		 8113
8114 if (disk->scsi_id == __cpu_to_le32(~(__u32)0))
8115 return;
8116
47ee5a45
DW		 8117 disk->scsi_id = __cpu_to_le32(~(__u32)0);
8118 memmove(&disk->serial[0], &disk->serial[1], MAX_RAID_SERIAL_LEN - 1);
8119}
8120
33414a01
DW		 8121static void handle_missing(struct intel_super *super, struct imsm_dev *dev)
8122{
33414a01 8123 struct dl *dl;
33414a01
DW		 8124
8125 if (!super->missing)
8126 return;
33414a01 8127
79b68f1b
PC		 8128 /* When orom adds replacement for missing disk it does
8129 * not remove entry of missing disk, but just updates map with
8130 * new added disk. So it is not enough just to test if there is
8131 * any missing disk, we have to look if there are any failed disks
8132 * in map to stop migration */
8133
33414a01 8134 dprintf("imsm: mark missing\n");
3d59f0c0
AK		 8135 /* end process for initialization and rebuild only
8136 */
8137 if (is_gen_migration(dev) == 0) {
fb12a745 8138 int failed = imsm_count_failed(super, dev, MAP_0);
3d59f0c0 8139
fb12a745
TM		 8140 if (failed) {
8141 __u8 map_state;
8142 struct imsm_map *map = get_imsm_map(dev, MAP_0);
8143 struct imsm_map *map1;
8144 int i, ord, ord_map1;
8145 int rebuilt = 1;
3d59f0c0 8146
fb12a745
TM		 8147 for (i = 0; i < map->num_members; i++) {
8148 ord = get_imsm_ord_tbl_ent(dev, i, MAP_0);
8149 if (!(ord & IMSM_ORD_REBUILD))
8150 continue;
8151
8152 map1 = get_imsm_map(dev, MAP_1);
8153 if (!map1)
8154 continue;
8155
8156 ord_map1 = __le32_to_cpu(map1->disk_ord_tbl[i]);
8157 if (ord_map1 & IMSM_ORD_REBUILD)
8158 rebuilt = 0;
8159 }
8160
8161 if (rebuilt) {
8162 map_state = imsm_check_degraded(super, dev,
8163 failed, MAP_0);
8164 end_migration(dev, super, map_state);
8165 }
8166 }
3d59f0c0 8167 }
33414a01 8168 for (dl = super->missing; dl; dl = dl->next)
4c9e8c1e 8169 mark_missing(super, dev, &dl->disk, dl->index);
33414a01
DW		 8170 super->updates_pending++;
8171}
8172
f3871fdc
AK		 8173static unsigned long long imsm_set_array_size(struct imsm_dev *dev,
8174 long long new_size)
70bdf0dc 8175{
70bdf0dc 8176 unsigned long long array_blocks;
9529d343
MD		 8177 struct imsm_map *map = get_imsm_map(dev, MAP_0);
8178 int used_disks = imsm_num_data_members(map);
70bdf0dc
AK		 8179
8180 if (used_disks == 0) {
8181 /* when problems occures
8182 * return current array_blocks value
8183 */
fcc2c9da 8184 array_blocks = imsm_dev_size(dev);
70bdf0dc
AK		 8185
8186 return array_blocks;
8187 }
8188
8189 /* set array size in metadata
8190 */
9529d343 8191 if (new_size <= 0)
f3871fdc
AK		 8192 /* OLCE size change is caused by added disks
8193 */
44490938 8194 array_blocks = per_dev_array_size(map) * used_disks;
9529d343 8195 else
f3871fdc
AK		 8196 /* Online Volume Size Change
8197 * Using available free space
8198 */
8199 array_blocks = new_size;
70bdf0dc 8200
b53bfba6 8201 array_blocks = round_size_to_mb(array_blocks, used_disks);
fcc2c9da 8202 set_imsm_dev_size(dev, array_blocks);
70bdf0dc
AK		 8203
8204 return array_blocks;
8205}
8206
28bce06f
AK		 8207static void imsm_set_disk(struct active_array *a, int n, int state);
8208
0e2d1a4e
AK		 8209static void imsm_progress_container_reshape(struct intel_super *super)
8210{
8211 /* if no device has a migr_state, but some device has a
8212 * different number of members than the previous device, start
8213 * changing the number of devices in this device to match
8214 * previous.
8215 */
8216 struct imsm_super *mpb = super->anchor;
8217 int prev_disks = -1;
8218 int i;
1dfaa380 8219 int copy_map_size;
0e2d1a4e
AK		 8220
8221 for (i = 0; i < mpb->num_raid_devs; i++) {
8222 struct imsm_dev *dev = get_imsm_dev(super, i);
238c0a71 8223 struct imsm_map *map = get_imsm_map(dev, MAP_0);
0e2d1a4e
AK		 8224 struct imsm_map *map2;
8225 int prev_num_members;
0e2d1a4e
AK		 8226
8227 if (dev->vol.migr_state)
8228 return;
8229
8230 if (prev_disks == -1)
8231 prev_disks = map->num_members;
8232 if (prev_disks == map->num_members)
8233 continue;
8234
8235 /* OK, this array needs to enter reshape mode.
8236 * i.e it needs a migr_state
8237 */
8238
1dfaa380 8239 copy_map_size = sizeof_imsm_map(map);
0e2d1a4e
AK		 8240 prev_num_members = map->num_members;
8241 map->num_members = prev_disks;
8242 dev->vol.migr_state = 1;
8243 dev->vol.curr_migr_unit = 0;
ea672ee1 8244 set_migr_type(dev, MIGR_GEN_MIGR);
0e2d1a4e
AK		 8245 for (i = prev_num_members;
8246 i < map->num_members; i++)
8247 set_imsm_ord_tbl_ent(map, i, i);
238c0a71 8248 map2 = get_imsm_map(dev, MAP_1);
0e2d1a4e 8249 /* Copy the current map */
1dfaa380 8250 memcpy(map2, map, copy_map_size);
0e2d1a4e
AK		 8251 map2->num_members = prev_num_members;
8252
f3871fdc 8253 imsm_set_array_size(dev, -1);
51d83f5d 8254 super->clean_migration_record_by_mdmon = 1;
0e2d1a4e
AK		 8255 super->updates_pending++;
8256 }
8257}
8258
aad6f216 8259/* Handle dirty -> clean transititions, resync and reshape. Degraded and rebuild
0c046afd
DW		 8260 * states are handled in imsm_set_disk() with one exception, when a
8261 * resync is stopped due to a new failure this routine will set the
8262 * 'degraded' state for the array.
8263 */
01f157d7 8264static int imsm_set_array_state(struct active_array *a, int consistent)
a862209d
DW		 8265{
8266 int inst = a->info.container_member;
8267 struct intel_super *super = a->container->sb;
949c47a0 8268 struct imsm_dev *dev = get_imsm_dev(super, inst);
238c0a71 8269 struct imsm_map *map = get_imsm_map(dev, MAP_0);
3b451610
AK		 8270 int failed = imsm_count_failed(super, dev, MAP_0);
8271 __u8 map_state = imsm_check_degraded(super, dev, failed, MAP_0);
1e5c6983 8272 __u32 blocks_per_unit;
a862209d 8273
1af97990
AK		 8274 if (dev->vol.migr_state &&
8275 dev->vol.migr_type == MIGR_GEN_MIGR) {
8276 /* array state change is blocked due to reshape action
aad6f216
N		 8277 * We might need to
8278 * - abort the reshape (if last_checkpoint is 0 and action!= reshape)
8279 * - finish the reshape (if last_checkpoint is big and action != reshape)
8280 * - update curr_migr_unit
1af97990 8281 */
aad6f216
N		 8282 if (a->curr_action == reshape) {
8283 /* still reshaping, maybe update curr_migr_unit */
633b5610 8284 goto mark_checkpoint;
aad6f216
N		 8285 } else {
8286 if (a->last_checkpoint == 0 && a->prev_action == reshape) {
8287 /* for some reason we aborted the reshape.
b66e591b
AK		 8288 *
8289 * disable automatic metadata rollback
8290 * user action is required to recover process
aad6f216 8291 */
b66e591b 8292 if (0) {
238c0a71
AK		 8293 struct imsm_map *map2 =
8294 get_imsm_map(dev, MAP_1);
8295 dev->vol.migr_state = 0;
8296 set_migr_type(dev, 0);
8297 dev->vol.curr_migr_unit = 0;
8298 memcpy(map, map2,
8299 sizeof_imsm_map(map2));
8300 super->updates_pending++;
b66e591b 8301 }
aad6f216
N		 8302 }
8303 if (a->last_checkpoint >= a->info.component_size) {
8304 unsigned long long array_blocks;
8305 int used_disks;
e154ced3 8306 struct mdinfo *mdi;
aad6f216 8307
9529d343 8308 used_disks = imsm_num_data_members(map);
d55adef9
AK		 8309 if (used_disks > 0) {
8310 array_blocks =
44490938 8311 per_dev_array_size(map) *
d55adef9 8312 used_disks;
b53bfba6
TM		 8313 array_blocks =
8314 round_size_to_mb(array_blocks,
8315 used_disks);
d55adef9
AK		 8316 a->info.custom_array_size = array_blocks;
8317 /* encourage manager to update array
8318 * size
8319 */
e154ced3 8320
d55adef9 8321 a->check_reshape = 1;
633b5610 8322 }
e154ced3
AK		 8323 /* finalize online capacity expansion/reshape */
8324 for (mdi = a->info.devs; mdi; mdi = mdi->next)
8325 imsm_set_disk(a,
8326 mdi->disk.raid_disk,
8327 mdi->curr_state);
8328
0e2d1a4e 8329 imsm_progress_container_reshape(super);
e154ced3 8330 }
aad6f216 8331 }
1af97990
AK		 8332 }
8333
47ee5a45 8334 /* before we activate this array handle any missing disks */
33414a01
DW		 8335 if (consistent == 2)
8336 handle_missing(super, dev);
1e5c6983 8337
0c046afd 8338 if (consistent == 2 &&
b7941fd6 8339 (!is_resync_complete(&a->info) ||
0c046afd
DW		 8340 map_state != IMSM_T_STATE_NORMAL ||
8341 dev->vol.migr_state))
01f157d7 8342 consistent = 0;
272906ef 8343
b7941fd6 8344 if (is_resync_complete(&a->info)) {
0c046afd 8345 /* complete intialization / resync,
0556e1a2
DW		 8346 * recovery and interrupted recovery is completed in
8347 * ->set_disk
0c046afd
DW		 8348 */
8349 if (is_resyncing(dev)) {
8350 dprintf("imsm: mark resync done\n");
809da78e 8351 end_migration(dev, super, map_state);
115c3803 8352 super->updates_pending++;
484240d8 8353 a->last_checkpoint = 0;
115c3803 8354 }
b9172665
AK		 8355 } else if ((!is_resyncing(dev) && !failed) &&
8356 (imsm_reshape_blocks_arrays_changes(super) == 0)) {
0c046afd 8357 /* mark the start of the init process if nothing is failed */
b7941fd6 8358 dprintf("imsm: mark resync start\n");
1484e727 8359 if (map->map_state == IMSM_T_STATE_UNINITIALIZED)
8e59f3d8 8360 migrate(dev, super, IMSM_T_STATE_NORMAL, MIGR_INIT);
1484e727 8361 else
8e59f3d8 8362 migrate(dev, super, IMSM_T_STATE_NORMAL, MIGR_REPAIR);
3393c6af 8363 super->updates_pending++;
115c3803 8364 }
a862209d 8365
633b5610 8366mark_checkpoint:
5b83bacf
AK		 8367 /* skip checkpointing for general migration,
8368 * it is controlled in mdadm
8369 */
8370 if (is_gen_migration(dev))
8371 goto skip_mark_checkpoint;
8372
1e5c6983 8373 /* check if we can update curr_migr_unit from resync_start, recovery_start */
c47b0ff6 8374 blocks_per_unit = blocks_per_migr_unit(super, dev);
4f0a7acc 8375 if (blocks_per_unit) {
1e5c6983
DW		 8376 __u32 units32;
8377 __u64 units;
8378
4f0a7acc 8379 units = a->last_checkpoint / blocks_per_unit;
1e5c6983
DW		 8380 units32 = units;
8381
8382 /* check that we did not overflow 32-bits, and that
8383 * curr_migr_unit needs updating
8384 */
8385 if (units32 == units &&
bfd80a56 8386 units32 != 0 &&
1e5c6983
DW		 8387 __le32_to_cpu(dev->vol.curr_migr_unit) != units32) {
8388 dprintf("imsm: mark checkpoint (%u)\n", units32);
8389 dev->vol.curr_migr_unit = __cpu_to_le32(units32);
8390 super->updates_pending++;
8391 }
8392 }
f8f603f1 8393
5b83bacf 8394skip_mark_checkpoint:
3393c6af 8395 /* mark dirty / clean */
2432ce9b
AP		 8396 if (((dev->vol.dirty & RAIDVOL_DIRTY) && consistent) ||
8397 (!(dev->vol.dirty & RAIDVOL_DIRTY) && !consistent)) {
b7941fd6 8398 dprintf("imsm: mark '%s'\n", consistent ? "clean" : "dirty");
2432ce9b
AP		 8399 if (consistent) {
8400 dev->vol.dirty = RAIDVOL_CLEAN;
8401 } else {
8402 dev->vol.dirty = RAIDVOL_DIRTY;
c2462068
PB		 8403 if (dev->rwh_policy == RWH_DISTRIBUTED ||
8404 dev->rwh_policy == RWH_MULTIPLE_DISTRIBUTED)
2432ce9b
AP		 8405 dev->vol.dirty |= RAIDVOL_DSRECORD_VALID;
8406 }
a862209d
DW		 8407 super->updates_pending++;
8408 }
28bce06f 8409
01f157d7 8410 return consistent;
a862209d
DW		 8411}
8412
6f50473f
TM		 8413static int imsm_disk_slot_to_ord(struct active_array *a, int slot)
8414{
8415 int inst = a->info.container_member;
8416 struct intel_super *super = a->container->sb;
8417 struct imsm_dev *dev = get_imsm_dev(super, inst);
8418 struct imsm_map *map = get_imsm_map(dev, MAP_0);
8419
8420 if (slot > map->num_members) {
8421 pr_err("imsm: imsm_disk_slot_to_ord %d out of range 0..%d\n",
8422 slot, map->num_members - 1);
8423 return -1;
8424 }
8425
8426 if (slot < 0)
8427 return -1;
8428
8429 return get_imsm_ord_tbl_ent(dev, slot, MAP_0);
8430}
8431
8d45d196 8432static void imsm_set_disk(struct active_array *a, int n, int state)
845dea95 8433{
8d45d196
DW		 8434 int inst = a->info.container_member;
8435 struct intel_super *super = a->container->sb;
949c47a0 8436 struct imsm_dev *dev = get_imsm_dev(super, inst);
238c0a71 8437 struct imsm_map *map = get_imsm_map(dev, MAP_0);
8d45d196 8438 struct imsm_disk *disk;
7ce05701
LD		 8439 struct mdinfo *mdi;
8440 int recovery_not_finished = 0;
0c046afd 8441 int failed;
6f50473f 8442 int ord;
0c046afd 8443 __u8 map_state;
fb12a745
TM		 8444 int rebuild_done = 0;
8445 int i;
8d45d196 8446
fb12a745 8447 ord = get_imsm_ord_tbl_ent(dev, n, MAP_X);
6f50473f 8448 if (ord < 0)
8d45d196
DW		 8449 return;
8450
4e6e574a 8451 dprintf("imsm: set_disk %d:%x\n", n, state);
b10b37b8 8452 disk = get_imsm_disk(super, ord_to_idx(ord));
8d45d196 8453
5802a811 8454 /* check for new failures */
0556e1a2 8455 if (state & DS_FAULTY) {
4c9e8c1e 8456 if (mark_failure(super, dev, disk, ord_to_idx(ord)))
0556e1a2 8457 super->updates_pending++;
8d45d196 8458 }
47ee5a45 8459
19859edc 8460 /* check if in_sync */
0556e1a2 8461 if (state & DS_INSYNC && ord & IMSM_ORD_REBUILD && is_rebuilding(dev)) {
238c0a71 8462 struct imsm_map *migr_map = get_imsm_map(dev, MAP_1);
b10b37b8
DW		 8463
8464 set_imsm_ord_tbl_ent(migr_map, n, ord_to_idx(ord));
fb12a745 8465 rebuild_done = 1;
19859edc
DW		 8466 super->updates_pending++;
8467 }
8d45d196 8468
3b451610
AK		 8469 failed = imsm_count_failed(super, dev, MAP_0);
8470 map_state = imsm_check_degraded(super, dev, failed, MAP_0);
5802a811 8471
0c046afd 8472 /* check if recovery complete, newly degraded, or failed */
94002678
AK		 8473 dprintf("imsm: Detected transition to state ");
8474 switch (map_state) {
8475 case IMSM_T_STATE_NORMAL: /* transition to normal state */
8476 dprintf("normal: ");
8477 if (is_rebuilding(dev)) {
1ade5cc1 8478 dprintf_cont("while rebuilding");
7ce05701
LD		 8479 /* check if recovery is really finished */
8480 for (mdi = a->info.devs; mdi ; mdi = mdi->next)
8481 if (mdi->recovery_start != MaxSector) {
8482 recovery_not_finished = 1;
8483 break;
8484 }
8485 if (recovery_not_finished) {
1ade5cc1
N		 8486 dprintf_cont("\n");
8487 dprintf("Rebuild has not finished yet, state not changed");
7ce05701
LD		 8488 if (a->last_checkpoint < mdi->recovery_start) {
8489 a->last_checkpoint = mdi->recovery_start;
8490 super->updates_pending++;
8491 }
8492 break;
8493 }
94002678 8494 end_migration(dev, super, map_state);
238c0a71 8495 map = get_imsm_map(dev, MAP_0);
94002678
AK		 8496 map->failed_disk_num = ~0;
8497 super->updates_pending++;
8498 a->last_checkpoint = 0;
8499 break;
8500 }
8501 if (is_gen_migration(dev)) {
1ade5cc1 8502 dprintf_cont("while general migration");
bf2f0071 8503 if (a->last_checkpoint >= a->info.component_size)
809da78e 8504 end_migration(dev, super, map_state);
94002678
AK		 8505 else
8506 map->map_state = map_state;
238c0a71 8507 map = get_imsm_map(dev, MAP_0);
28bce06f 8508 map->failed_disk_num = ~0;
94002678 8509 super->updates_pending++;
bf2f0071 8510 break;
94002678
AK		 8511 }
8512 break;
8513 case IMSM_T_STATE_DEGRADED: /* transition to degraded state */
1ade5cc1 8514 dprintf_cont("degraded: ");
089f9d79 8515 if (map->map_state != map_state && !dev->vol.migr_state) {
1ade5cc1 8516 dprintf_cont("mark degraded");
94002678
AK		 8517 map->map_state = map_state;
8518 super->updates_pending++;
8519 a->last_checkpoint = 0;
8520 break;
8521 }
8522 if (is_rebuilding(dev)) {
1ade5cc1 8523 dprintf_cont("while rebuilding.");
94002678 8524 if (map->map_state != map_state) {
1ade5cc1 8525 dprintf_cont(" Map state change");
94002678
AK		 8526 end_migration(dev, super, map_state);
8527 super->updates_pending++;
fb12a745
TM		 8528 } else if (!rebuild_done) {
8529 break;
8530 }
8531
8532 /* check if recovery is really finished */
8533 for (mdi = a->info.devs; mdi ; mdi = mdi->next)
8534 if (mdi->recovery_start != MaxSector) {
8535 recovery_not_finished = 1;
8536 break;
8537 }
8538 if (recovery_not_finished) {
8539 dprintf_cont("\n");
8540 dprintf("Rebuild has not finished yet, state not changed");
8541 if (a->last_checkpoint < mdi->recovery_start) {
8542 a->last_checkpoint =
8543 mdi->recovery_start;
8544 super->updates_pending++;
8545 }
8546 break;
94002678 8547 }
fb12a745
TM		 8548
8549 dprintf_cont(" Rebuild done, still degraded");
8550 dev->vol.migr_state = 0;
8551 set_migr_type(dev, 0);
8552 dev->vol.curr_migr_unit = 0;
8553
8554 for (i = 0; i < map->num_members; i++) {
8555 int idx = get_imsm_ord_tbl_ent(dev, i, MAP_0);
8556
8557 if (idx & IMSM_ORD_REBUILD)
8558 map->failed_disk_num = i;
8559 }
8560 super->updates_pending++;
94002678
AK		 8561 break;
8562 }
8563 if (is_gen_migration(dev)) {
1ade5cc1 8564 dprintf_cont("while general migration");
bf2f0071 8565 if (a->last_checkpoint >= a->info.component_size)
809da78e 8566 end_migration(dev, super, map_state);
94002678
AK		 8567 else {
8568 map->map_state = map_state;
3b451610 8569 manage_second_map(super, dev);
94002678
AK		 8570 }
8571 super->updates_pending++;
bf2f0071 8572 break;
28bce06f 8573 }
6ce1fbf1 8574 if (is_initializing(dev)) {
1ade5cc1 8575 dprintf_cont("while initialization.");
6ce1fbf1
AK		 8576 map->map_state = map_state;
8577 super->updates_pending++;
8578 break;
8579 }
94002678
AK		 8580 break;
8581 case IMSM_T_STATE_FAILED: /* transition to failed state */
1ade5cc1 8582 dprintf_cont("failed: ");
94002678 8583 if (is_gen_migration(dev)) {
1ade5cc1 8584 dprintf_cont("while general migration");
94002678
AK		 8585 map->map_state = map_state;
8586 super->updates_pending++;
8587 break;
8588 }
8589 if (map->map_state != map_state) {
1ade5cc1 8590 dprintf_cont("mark failed");
94002678
AK		 8591 end_migration(dev, super, map_state);
8592 super->updates_pending++;
8593 a->last_checkpoint = 0;
8594 break;
8595 }
8596 break;
8597 default:
1ade5cc1 8598 dprintf_cont("state %i\n", map_state);
5802a811 8599 }
1ade5cc1 8600 dprintf_cont("\n");
845dea95
NB		 8601}
8602
f796af5d 8603static int store_imsm_mpb(int fd, struct imsm_super *mpb)
c2a1e7da 8604{
f796af5d 8605 void *buf = mpb;
c2a1e7da
DW		 8606 __u32 mpb_size = __le32_to_cpu(mpb->mpb_size);
8607 unsigned long long dsize;
8608 unsigned long long sectors;
f36a9ecd 8609 unsigned int sector_size;
c2a1e7da 8610
f36a9ecd 8611 get_dev_sector_size(fd, NULL, &sector_size);
c2a1e7da
DW		 8612 get_dev_size(fd, NULL, &dsize);
8613
f36a9ecd 8614 if (mpb_size > sector_size) {
272f648f 8615 /* -1 to account for anchor */
f36a9ecd 8616 sectors = mpb_sectors(mpb, sector_size) - 1;
c2a1e7da 8617
272f648f 8618 /* write the extended mpb to the sectors preceeding the anchor */
f36a9ecd
PB		 8619 if (lseek64(fd, dsize - (sector_size * (2 + sectors)),
8620 SEEK_SET) < 0)
272f648f 8621 return 1;
c2a1e7da 8622
f36a9ecd
PB		 8623 if ((unsigned long long)write(fd, buf + sector_size,
8624 sector_size * sectors) != sector_size * sectors)
272f648f
DW		 8625 return 1;
8626 }
c2a1e7da 8627
272f648f 8628 /* first block is stored on second to last sector of the disk */
f36a9ecd 8629 if (lseek64(fd, dsize - (sector_size * 2), SEEK_SET) < 0)
c2a1e7da
DW		 8630 return 1;
8631
466070ad 8632 if ((unsigned int)write(fd, buf, sector_size) != sector_size)
c2a1e7da
DW		 8633 return 1;
8634
c2a1e7da
DW		 8635 return 0;
8636}
8637
2e735d19 8638static void imsm_sync_metadata(struct supertype *container)
845dea95 8639{
2e735d19 8640 struct intel_super *super = container->sb;
c2a1e7da 8641
1a64be56 8642 dprintf("sync metadata: %d\n", super->updates_pending);
c2a1e7da
DW		 8643 if (!super->updates_pending)
8644 return;
8645
36988a3d 8646 write_super_imsm(container, 0);
c2a1e7da
DW		 8647
8648 super->updates_pending = 0;
845dea95
NB		 8649}
8650
272906ef
DW		 8651static struct dl *imsm_readd(struct intel_super *super, int idx, struct active_array *a)
8652{
8653 struct imsm_dev *dev = get_imsm_dev(super, a->info.container_member);
238c0a71 8654 int i = get_imsm_disk_idx(dev, idx, MAP_X);
272906ef
DW		 8655 struct dl *dl;
8656
8657 for (dl = super->disks; dl; dl = dl->next)
8658 if (dl->index == i)
8659 break;
8660
25ed7e59 8661 if (dl && is_failed(&dl->disk))
272906ef
DW		 8662 dl = NULL;
8663
8664 if (dl)
1ade5cc1 8665 dprintf("found %x:%x\n", dl->major, dl->minor);
272906ef
DW		 8666
8667 return dl;
8668}
8669
a20d2ba5 8670static struct dl *imsm_add_spare(struct intel_super *super, int slot,
8ba77d32
AK		 8671 struct active_array *a, int activate_new,
8672 struct mdinfo *additional_test_list)
272906ef
DW		 8673{
8674 struct imsm_dev *dev = get_imsm_dev(super, a->info.container_member);
238c0a71 8675 int idx = get_imsm_disk_idx(dev, slot, MAP_X);
a20d2ba5
DW		 8676 struct imsm_super *mpb = super->anchor;
8677 struct imsm_map *map;
272906ef
DW		 8678 unsigned long long pos;
8679 struct mdinfo *d;
8680 struct extent *ex;
a20d2ba5 8681 int i, j;
272906ef 8682 int found;
569cc43f
DW		 8683 __u32 array_start = 0;
8684 __u32 array_end = 0;
272906ef 8685 struct dl *dl;
6c932028 8686 struct mdinfo *test_list;
272906ef
DW		 8687
8688 for (dl = super->disks; dl; dl = dl->next) {
8689 /* If in this array, skip */
8690 for (d = a->info.devs ; d ; d = d->next)
e553d2a4
DW		 8691 if (d->state_fd >= 0 &&
8692 d->disk.major == dl->major &&
272906ef 8693 d->disk.minor == dl->minor) {
8ba77d32
AK		 8694 dprintf("%x:%x already in array\n",
8695 dl->major, dl->minor);
272906ef
DW		 8696 break;
8697 }
8698 if (d)
8699 continue;
6c932028
AK		 8700 test_list = additional_test_list;
8701 while (test_list) {
8702 if (test_list->disk.major == dl->major &&
8703 test_list->disk.minor == dl->minor) {
8ba77d32
AK		 8704 dprintf("%x:%x already in additional test list\n",
8705 dl->major, dl->minor);
8706 break;
8707 }
6c932028 8708 test_list = test_list->next;
8ba77d32 8709 }
6c932028 8710 if (test_list)
8ba77d32 8711 continue;
272906ef 8712
e553d2a4 8713 /* skip in use or failed drives */
25ed7e59 8714 if (is_failed(&dl->disk) || idx == dl->index ||
df474657
DW		 8715 dl->index == -2) {
8716 dprintf("%x:%x status (failed: %d index: %d)\n",
25ed7e59 8717 dl->major, dl->minor, is_failed(&dl->disk), idx);
9a1608e5
DW		 8718 continue;
8719 }
8720
a20d2ba5
DW		 8721 /* skip pure spares when we are looking for partially
8722 * assimilated drives
8723 */
8724 if (dl->index == -1 && !activate_new)
8725 continue;
8726
f2cc4f7d
AO		 8727 if (!drive_validate_sector_size(super, dl))
8728 continue;
8729
272906ef 8730 /* Does this unused device have the requisite free space?
a20d2ba5 8731 * It needs to be able to cover all member volumes
272906ef
DW		 8732 */
8733 ex = get_extents(super, dl);
8734 if (!ex) {
8735 dprintf("cannot get extents\n");
8736 continue;
8737 }
a20d2ba5
DW		 8738 for (i = 0; i < mpb->num_raid_devs; i++) {
8739 dev = get_imsm_dev(super, i);
238c0a71 8740 map = get_imsm_map(dev, MAP_0);
272906ef 8741
a20d2ba5
DW		 8742 /* check if this disk is already a member of
8743 * this array
272906ef 8744 */
620b1713 8745 if (get_imsm_disk_slot(map, dl->index) >= 0)
a20d2ba5
DW		 8746 continue;
8747
8748 found = 0;
8749 j = 0;
8750 pos = 0;
5551b113 8751 array_start = pba_of_lba0(map);
329c8278 8752 array_end = array_start +
44490938 8753 per_dev_array_size(map) - 1;
a20d2ba5
DW		 8754
8755 do {
8756 /* check that we can start at pba_of_lba0 with
44490938 8757 * num_data_stripes*blocks_per_stripe of space
a20d2ba5 8758 */
329c8278 8759 if (array_start >= pos && array_end < ex[j].start) {
a20d2ba5
DW		 8760 found = 1;
8761 break;
8762 }
8763 pos = ex[j].start + ex[j].size;
8764 j++;
8765 } while (ex[j-1].size);
8766
8767 if (!found)
272906ef 8768 break;
a20d2ba5 8769 }
272906ef
DW		 8770
8771 free(ex);
a20d2ba5 8772 if (i < mpb->num_raid_devs) {
329c8278
DW		 8773 dprintf("%x:%x does not have %u to %u available\n",
8774 dl->major, dl->minor, array_start, array_end);
272906ef
DW		 8775 /* No room */
8776 continue;
a20d2ba5
DW		 8777 }
8778 return dl;
272906ef
DW		 8779 }
8780
8781 return dl;
8782}
8783
95d07a2c
LM		 8784static int imsm_rebuild_allowed(struct supertype *cont, int dev_idx, int failed)
8785{
8786 struct imsm_dev *dev2;
8787 struct imsm_map *map;
8788 struct dl *idisk;
8789 int slot;
8790 int idx;
8791 __u8 state;
8792
8793 dev2 = get_imsm_dev(cont->sb, dev_idx);
8794 if (dev2) {
238c0a71 8795 state = imsm_check_degraded(cont->sb, dev2, failed, MAP_0);
95d07a2c 8796 if (state == IMSM_T_STATE_FAILED) {
238c0a71 8797 map = get_imsm_map(dev2, MAP_0);
95d07a2c
LM		 8798 if (!map)
8799 return 1;
8800 for (slot = 0; slot < map->num_members; slot++) {
8801 /*
8802 * Check if failed disks are deleted from intel
8803 * disk list or are marked to be deleted
8804 */
238c0a71 8805 idx = get_imsm_disk_idx(dev2, slot, MAP_X);
95d07a2c
LM		 8806 idisk = get_imsm_dl_disk(cont->sb, idx);
8807 /*
8808 * Do not rebuild the array if failed disks
8809 * from failed sub-array are not removed from
8810 * container.
8811 */
8812 if (idisk &&
8813 is_failed(&idisk->disk) &&
8814 (idisk->action != DISK_REMOVE))
8815 return 0;
8816 }
8817 }
8818 }
8819 return 1;
8820}
8821
88758e9d
DW		 8822static struct mdinfo *imsm_activate_spare(struct active_array *a,
8823 struct metadata_update **updates)
8824{
8825 /**
d23fe947
DW		 8826 * Find a device with unused free space and use it to replace a
8827 * failed/vacant region in an array. We replace failed regions one a
8828 * array at a time. The result is that a new spare disk will be added
8829 * to the first failed array and after the monitor has finished
8830 * propagating failures the remainder will be consumed.
88758e9d 8831 *
d23fe947
DW		 8832 * FIXME add a capability for mdmon to request spares from another
8833 * container.
88758e9d
DW		 8834 */
8835
8836 struct intel_super *super = a->container->sb;
88758e9d 8837 int inst = a->info.container_member;
949c47a0 8838 struct imsm_dev *dev = get_imsm_dev(super, inst);
238c0a71 8839 struct imsm_map *map = get_imsm_map(dev, MAP_0);
88758e9d
DW		 8840 int failed = a->info.array.raid_disks;
8841 struct mdinfo *rv = NULL;
8842 struct mdinfo *d;
8843 struct mdinfo *di;
8844 struct metadata_update *mu;
8845 struct dl *dl;
8846 struct imsm_update_activate_spare *u;
8847 int num_spares = 0;
8848 int i;
95d07a2c 8849 int allowed;
88758e9d
DW		 8850
8851 for (d = a->info.devs ; d ; d = d->next) {
8852 if ((d->curr_state & DS_FAULTY) &&
8853 d->state_fd >= 0)
8854 /* wait for Removal to happen */
8855 return NULL;
8856 if (d->state_fd >= 0)
8857 failed--;
8858 }
8859
8860 dprintf("imsm: activate spare: inst=%d failed=%d (%d) level=%d\n",
8861 inst, failed, a->info.array.raid_disks, a->info.array.level);
1af97990 8862
e2962bfc
AK		 8863 if (imsm_reshape_blocks_arrays_changes(super))
8864 return NULL;
1af97990 8865
fc8ca064
AK		 8866 /* Cannot activate another spare if rebuild is in progress already
8867 */
8868 if (is_rebuilding(dev)) {
7a862a02 8869 dprintf("imsm: No spare activation allowed. Rebuild in progress already.\n");
fc8ca064
AK		 8870 return NULL;
8871 }
8872
89c67882
AK		 8873 if (a->info.array.level == 4)
8874 /* No repair for takeovered array
8875 * imsm doesn't support raid4
8876 */
8877 return NULL;
8878
3b451610
AK		 8879 if (imsm_check_degraded(super, dev, failed, MAP_0) !=
8880 IMSM_T_STATE_DEGRADED)
88758e9d
DW		 8881 return NULL;
8882
83ca7d45
AP		 8883 if (get_imsm_map(dev, MAP_0)->map_state == IMSM_T_STATE_UNINITIALIZED) {
8884 dprintf("imsm: No spare activation allowed. Volume is not initialized.\n");
8885 return NULL;
8886 }
8887
95d07a2c
LM		 8888 /*
8889 * If there are any failed disks check state of the other volume.
8890 * Block rebuild if the another one is failed until failed disks
8891 * are removed from container.
8892 */
8893 if (failed) {
7a862a02 8894 dprintf("found failed disks in %.*s, check if there anotherfailed sub-array.\n",
c4acd1e5 8895 MAX_RAID_SERIAL_LEN, dev->volume);
95d07a2c
LM		 8896 /* check if states of the other volumes allow for rebuild */
8897 for (i = 0; i < super->anchor->num_raid_devs; i++) {
8898 if (i != inst) {
8899 allowed = imsm_rebuild_allowed(a->container,
8900 i, failed);
8901 if (!allowed)
8902 return NULL;
8903 }
8904 }
8905 }
8906
88758e9d 8907 /* For each slot, if it is not working, find a spare */
88758e9d
DW		 8908 for (i = 0; i < a->info.array.raid_disks; i++) {
8909 for (d = a->info.devs ; d ; d = d->next)
8910 if (d->disk.raid_disk == i)
8911 break;
8912 dprintf("found %d: %p %x\n", i, d, d?d->curr_state:0);
8913 if (d && (d->state_fd >= 0))
8914 continue;
8915
272906ef 8916 /*
a20d2ba5
DW		 8917 * OK, this device needs recovery. Try to re-add the
8918 * previous occupant of this slot, if this fails see if
8919 * we can continue the assimilation of a spare that was
8920 * partially assimilated, finally try to activate a new
8921 * spare.
272906ef
DW		 8922 */
8923 dl = imsm_readd(super, i, a);
8924 if (!dl)
b303fe21 8925 dl = imsm_add_spare(super, i, a, 0, rv);
a20d2ba5 8926 if (!dl)
b303fe21 8927 dl = imsm_add_spare(super, i, a, 1, rv);
272906ef
DW		 8928 if (!dl)
8929 continue;
1011e834 8930
272906ef 8931 /* found a usable disk with enough space */
503975b9 8932 di = xcalloc(1, sizeof(*di));
272906ef
DW		 8933
8934 /* dl->index will be -1 in the case we are activating a
8935 * pristine spare. imsm_process_update() will create a
8936 * new index in this case. Once a disk is found to be
8937 * failed in all member arrays it is kicked from the
8938 * metadata
8939 */
8940 di->disk.number = dl->index;
d23fe947 8941
272906ef
DW		 8942 /* (ab)use di->devs to store a pointer to the device
8943 * we chose
8944 */
8945 di->devs = (struct mdinfo *) dl;
8946
8947 di->disk.raid_disk = i;
8948 di->disk.major = dl->major;
8949 di->disk.minor = dl->minor;
8950 di->disk.state = 0;
d23534e4 8951 di->recovery_start = 0;
5551b113 8952 di->data_offset = pba_of_lba0(map);
272906ef
DW		 8953 di->component_size = a->info.component_size;
8954 di->container_member = inst;
5e46202e 8955 di->bb.supported = 1;
2c8890e9 8956 if (a->info.consistency_policy == CONSISTENCY_POLICY_PPL) {
2432ce9b 8957 di->ppl_sector = get_ppl_sector(super, inst);
c2462068 8958 di->ppl_size = MULTIPLE_PPL_AREA_SIZE_IMSM >> 9;
2432ce9b 8959 }
148acb7b 8960 super->random = random32();
272906ef
DW		 8961 di->next = rv;
8962 rv = di;
8963 num_spares++;
8964 dprintf("%x:%x to be %d at %llu\n", dl->major, dl->minor,
8965 i, di->data_offset);
88758e9d
DW		 8966 }
8967
8968 if (!rv)
8969 /* No spares found */
8970 return rv;
8971 /* Now 'rv' has a list of devices to return.
8972 * Create a metadata_update record to update the
8973 * disk_ord_tbl for the array
8974 */
503975b9 8975 mu = xmalloc(sizeof(*mu));
1011e834 8976 mu->buf = xcalloc(num_spares,
503975b9 8977 sizeof(struct imsm_update_activate_spare));
88758e9d 8978 mu->space = NULL;
cb23f1f4 8979 mu->space_list = NULL;
88758e9d
DW		 8980 mu->len = sizeof(struct imsm_update_activate_spare) * num_spares;
8981 mu->next = *updates;
8982 u = (struct imsm_update_activate_spare *) mu->buf;
8983
8984 for (di = rv ; di ; di = di->next) {
8985 u->type = update_activate_spare;
d23fe947
DW		 8986 u->dl = (struct dl *) di->devs;
8987 di->devs = NULL;
88758e9d
DW		 8988 u->slot = di->disk.raid_disk;
8989 u->array = inst;
8990 u->next = u + 1;
8991 u++;
8992 }
8993 (u-1)->next = NULL;
8994 *updates = mu;
8995
8996 return rv;
8997}
8998
54c2c1ea 8999static int disks_overlap(struct intel_super *super, int idx, struct imsm_update_create_array *u)
8273f55e 9000{
54c2c1ea 9001 struct imsm_dev *dev = get_imsm_dev(super, idx);
238c0a71
AK		 9002 struct imsm_map *map = get_imsm_map(dev, MAP_0);
9003 struct imsm_map *new_map = get_imsm_map(&u->dev, MAP_0);
54c2c1ea
DW		 9004 struct disk_info *inf = get_disk_info(u);
9005 struct imsm_disk *disk;
8273f55e
DW		 9006 int i;
9007 int j;
8273f55e 9008
54c2c1ea 9009 for (i = 0; i < map->num_members; i++) {
238c0a71 9010 disk = get_imsm_disk(super, get_imsm_disk_idx(dev, i, MAP_X));
54c2c1ea
DW		 9011 for (j = 0; j < new_map->num_members; j++)
9012 if (serialcmp(disk->serial, inf[j].serial) == 0)
8273f55e
DW		 9013 return 1;
9014 }
9015
9016 return 0;
9017}
9018
1a64be56
LM		 9019static struct dl *get_disk_super(struct intel_super *super, int major, int minor)
9020{
594dc1b8
JS		 9021 struct dl *dl;
9022
1a64be56 9023 for (dl = super->disks; dl; dl = dl->next)
089f9d79 9024 if (dl->major == major && dl->minor == minor)
1a64be56
LM		 9025 return dl;
9026 return NULL;
9027}
9028
9029static int remove_disk_super(struct intel_super *super, int major, int minor)
9030{
594dc1b8 9031 struct dl *prev;
1a64be56
LM		 9032 struct dl *dl;
9033
9034 prev = NULL;
9035 for (dl = super->disks; dl; dl = dl->next) {
089f9d79 9036 if (dl->major == major && dl->minor == minor) {
1a64be56
LM		 9037 /* remove */
9038 if (prev)
9039 prev->next = dl->next;
9040 else
9041 super->disks = dl->next;
9042 dl->next = NULL;
9043 __free_imsm_disk(dl);
1ade5cc1 9044 dprintf("removed %x:%x\n", major, minor);
1a64be56
LM		 9045 break;
9046 }
9047 prev = dl;
9048 }
9049 return 0;
9050}
9051
f21e18ca 9052static void imsm_delete(struct intel_super *super, struct dl **dlp, unsigned index);
ae6aad82 9053
1a64be56
LM		 9054static int add_remove_disk_update(struct intel_super *super)
9055{
9056 int check_degraded = 0;
594dc1b8
JS		 9057 struct dl *disk;
9058
1a64be56
LM		 9059 /* add/remove some spares to/from the metadata/contrainer */
9060 while (super->disk_mgmt_list) {
9061 struct dl *disk_cfg;
9062
9063 disk_cfg = super->disk_mgmt_list;
9064 super->disk_mgmt_list = disk_cfg->next;
9065 disk_cfg->next = NULL;
9066
9067 if (disk_cfg->action == DISK_ADD) {
9068 disk_cfg->next = super->disks;
9069 super->disks = disk_cfg;
9070 check_degraded = 1;
1ade5cc1
N		 9071 dprintf("added %x:%x\n",
9072 disk_cfg->major, disk_cfg->minor);
1a64be56
LM		 9073 } else if (disk_cfg->action == DISK_REMOVE) {
9074 dprintf("Disk remove action processed: %x.%x\n",
9075 disk_cfg->major, disk_cfg->minor);
9076 disk = get_disk_super(super,
9077 disk_cfg->major,
9078 disk_cfg->minor);
9079 if (disk) {
9080 /* store action status */
9081 disk->action = DISK_REMOVE;
9082 /* remove spare disks only */
9083 if (disk->index == -1) {
9084 remove_disk_super(super,
9085 disk_cfg->major,
9086 disk_cfg->minor);
9087 }
9088 }
9089 /* release allocate disk structure */
9090 __free_imsm_disk(disk_cfg);
9091 }
9092 }
9093 return check_degraded;
9094}
9095
a29911da
PC		 9096static int apply_reshape_migration_update(struct imsm_update_reshape_migration *u,
9097 struct intel_super *super,
9098 void ***space_list)
9099{
9100 struct intel_dev *id;
9101 void **tofree = NULL;
9102 int ret_val = 0;
9103
1ade5cc1 9104 dprintf("(enter)\n");
089f9d79 9105 if (u->subdev < 0 || u->subdev > 1) {
a29911da
PC		 9106 dprintf("imsm: Error: Wrong subdev: %i\n", u->subdev);
9107 return ret_val;
9108 }
089f9d79 9109 if (space_list == NULL || *space_list == NULL) {
a29911da
PC		 9110 dprintf("imsm: Error: Memory is not allocated\n");
9111 return ret_val;
9112 }
9113
9114 for (id = super->devlist ; id; id = id->next) {
9115 if (id->index == (unsigned)u->subdev) {
9116 struct imsm_dev *dev = get_imsm_dev(super, u->subdev);
9117 struct imsm_map *map;
9118 struct imsm_dev *new_dev =
9119 (struct imsm_dev *)*space_list;
238c0a71 9120 struct imsm_map *migr_map = get_imsm_map(dev, MAP_1);
a29911da
PC		 9121 int to_state;
9122 struct dl *new_disk;
9123
9124 if (new_dev == NULL)
9125 return ret_val;
9126 *space_list = **space_list;
9127 memcpy(new_dev, dev, sizeof_imsm_dev(dev, 0));
238c0a71 9128 map = get_imsm_map(new_dev, MAP_0);
a29911da
PC		 9129 if (migr_map) {
9130 dprintf("imsm: Error: migration in progress");
9131 return ret_val;
9132 }
9133
9134 to_state = map->map_state;
9135 if ((u->new_level == 5) && (map->raid_level == 0)) {
9136 map->num_members++;
9137 /* this should not happen */
9138 if (u->new_disks[0] < 0) {
9139 map->failed_disk_num =
9140 map->num_members - 1;
9141 to_state = IMSM_T_STATE_DEGRADED;
9142 } else
9143 to_state = IMSM_T_STATE_NORMAL;
9144 }
8e59f3d8 9145 migrate(new_dev, super, to_state, MIGR_GEN_MIGR);
a29911da
PC		 9146 if (u->new_level > -1)
9147 map->raid_level = u->new_level;
238c0a71 9148 migr_map = get_imsm_map(new_dev, MAP_1);
a29911da
PC		 9149 if ((u->new_level == 5) &&
9150 (migr_map->raid_level == 0)) {
9151 int ord = map->num_members - 1;
9152 migr_map->num_members--;
9153 if (u->new_disks[0] < 0)
9154 ord |= IMSM_ORD_REBUILD;
9155 set_imsm_ord_tbl_ent(map,
9156 map->num_members - 1,
9157 ord);
9158 }
9159 id->dev = new_dev;
9160 tofree = (void **)dev;
9161
4bba0439
PC		 9162 /* update chunk size
9163 */
06fb291a
PB		 9164 if (u->new_chunksize > 0) {
9165 unsigned long long num_data_stripes;
9529d343
MD		 9166 struct imsm_map *dest_map =
9167 get_imsm_map(dev, MAP_0);
06fb291a 9168 int used_disks =
9529d343 9169 imsm_num_data_members(dest_map);
06fb291a
PB		 9170
9171 if (used_disks == 0)
9172 return ret_val;
9173
4bba0439
PC		 9174 map->blocks_per_strip =
9175 __cpu_to_le16(u->new_chunksize * 2);
06fb291a 9176 num_data_stripes =
fcc2c9da 9177 imsm_dev_size(dev) / used_disks;
06fb291a
PB		 9178 num_data_stripes /= map->blocks_per_strip;
9179 num_data_stripes /= map->num_domains;
9180 set_num_data_stripes(map, num_data_stripes);
9181 }
4bba0439 9182
44490938
MD		 9183 /* ensure blocks_per_member has valid value
9184 */
9185 set_blocks_per_member(map,
9186 per_dev_array_size(map) +
9187 NUM_BLOCKS_DIRTY_STRIPE_REGION);
9188
a29911da
PC		 9189 /* add disk
9190 */
089f9d79
JS		 9191 if (u->new_level != 5 || migr_map->raid_level != 0 ||
9192 migr_map->raid_level == map->raid_level)
a29911da
PC		 9193 goto skip_disk_add;
9194
9195 if (u->new_disks[0] >= 0) {
9196 /* use passes spare
9197 */
9198 new_disk = get_disk_super(super,
9199 major(u->new_disks[0]),
9200 minor(u->new_disks[0]));
7a862a02 9201 dprintf("imsm: new disk for reshape is: %i:%i (%p, index = %i)\n",
a29911da
PC		 9202 major(u->new_disks[0]),
9203 minor(u->new_disks[0]),
9204 new_disk, new_disk->index);
9205 if (new_disk == NULL)
9206 goto error_disk_add;
9207
9208 new_disk->index = map->num_members - 1;
9209 /* slot to fill in autolayout
9210 */
9211 new_disk->raiddisk = new_disk->index;
9212 new_disk->disk.status |= CONFIGURED_DISK;
9213 new_disk->disk.status &= ~SPARE_DISK;
9214 } else
9215 goto error_disk_add;
9216
9217skip_disk_add:
9218 *tofree = *space_list;
9219 /* calculate new size
9220 */
f3871fdc 9221 imsm_set_array_size(new_dev, -1);
a29911da
PC		 9222
9223 ret_val = 1;
9224 }
9225 }
9226
9227 if (tofree)
9228 *space_list = tofree;
9229 return ret_val;
9230
9231error_disk_add:
9232 dprintf("Error: imsm: Cannot find disk.\n");
9233 return ret_val;
9234}
9235
f3871fdc
AK		 9236static int apply_size_change_update(struct imsm_update_size_change *u,
9237 struct intel_super *super)
9238{
9239 struct intel_dev *id;
9240 int ret_val = 0;
9241
1ade5cc1 9242 dprintf("(enter)\n");
089f9d79 9243 if (u->subdev < 0 || u->subdev > 1) {
f3871fdc
AK		 9244 dprintf("imsm: Error: Wrong subdev: %i\n", u->subdev);
9245 return ret_val;
9246 }
9247
9248 for (id = super->devlist ; id; id = id->next) {
9249 if (id->index == (unsigned)u->subdev) {
9250 struct imsm_dev *dev = get_imsm_dev(super, u->subdev);
9251 struct imsm_map *map = get_imsm_map(dev, MAP_0);
9529d343 9252 int used_disks = imsm_num_data_members(map);
f3871fdc 9253 unsigned long long blocks_per_member;
06fb291a 9254 unsigned long long num_data_stripes;
44490938
MD		 9255 unsigned long long new_size_per_disk;
9256
9257 if (used_disks == 0)
9258 return 0;
f3871fdc
AK		 9259
9260 /* calculate new size
9261 */
44490938
MD		 9262 new_size_per_disk = u->new_size / used_disks;
9263 blocks_per_member = new_size_per_disk +
9264 NUM_BLOCKS_DIRTY_STRIPE_REGION;
9265 num_data_stripes = new_size_per_disk /
06fb291a
PB		 9266 map->blocks_per_strip;
9267 num_data_stripes /= map->num_domains;
9268 dprintf("(size: %llu, blocks per member: %llu, num_data_stipes: %llu)\n",
44490938 9269 u->new_size, new_size_per_disk,
06fb291a 9270 num_data_stripes);
f3871fdc 9271 set_blocks_per_member(map, blocks_per_member);
06fb291a 9272 set_num_data_stripes(map, num_data_stripes);
f3871fdc
AK		 9273 imsm_set_array_size(dev, u->new_size);
9274
9275 ret_val = 1;
9276 break;
9277 }
9278 }
9279
9280 return ret_val;
9281}
9282
061d7da3 9283static int apply_update_activate_spare(struct imsm_update_activate_spare *u,
ca9de185 9284 struct intel_super *super,
061d7da3
LO		 9285 struct active_array *active_array)
9286{
9287 struct imsm_super *mpb = super->anchor;
9288 struct imsm_dev *dev = get_imsm_dev(super, u->array);
238c0a71 9289 struct imsm_map *map = get_imsm_map(dev, MAP_0);
061d7da3
LO		 9290 struct imsm_map *migr_map;
9291 struct active_array *a;
9292 struct imsm_disk *disk;
9293 __u8 to_state;
9294 struct dl *dl;
9295 unsigned int found;
9296 int failed;
5961eeec 9297 int victim;
061d7da3 9298 int i;
5961eeec 9299 int second_map_created = 0;
061d7da3 9300
5961eeec 9301 for (; u; u = u->next) {
238c0a71 9302 victim = get_imsm_disk_idx(dev, u->slot, MAP_X);
061d7da3 9303
5961eeec 9304 if (victim < 0)
9305 return 0;
061d7da3 9306
5961eeec 9307 for (dl = super->disks; dl; dl = dl->next)
9308 if (dl == u->dl)
9309 break;
061d7da3 9310
5961eeec 9311 if (!dl) {
7a862a02 9312 pr_err("error: imsm_activate_spare passed an unknown disk (index: %d)\n",
5961eeec 9313 u->dl->index);
9314 return 0;
9315 }
061d7da3 9316
5961eeec 9317 /* count failures (excluding rebuilds and the victim)
9318 * to determine map[0] state
9319 */
9320 failed = 0;
9321 for (i = 0; i < map->num_members; i++) {
9322 if (i == u->slot)
9323 continue;
9324 disk = get_imsm_disk(super,
238c0a71 9325 get_imsm_disk_idx(dev, i, MAP_X));
5961eeec 9326 if (!disk || is_failed(disk))
9327 failed++;
9328 }
061d7da3 9329
5961eeec 9330 /* adding a pristine spare, assign a new index */
9331 if (dl->index < 0) {
9332 dl->index = super->anchor->num_disks;
9333 super->anchor->num_disks++;
9334 }
9335 disk = &dl->disk;
9336 disk->status |= CONFIGURED_DISK;
9337 disk->status &= ~SPARE_DISK;
9338
9339 /* mark rebuild */
238c0a71 9340 to_state = imsm_check_degraded(super, dev, failed, MAP_0);
5961eeec 9341 if (!second_map_created) {
9342 second_map_created = 1;
9343 map->map_state = IMSM_T_STATE_DEGRADED;
9344 migrate(dev, super, to_state, MIGR_REBUILD);
9345 } else
9346 map->map_state = to_state;
238c0a71 9347 migr_map = get_imsm_map(dev, MAP_1);
5961eeec 9348 set_imsm_ord_tbl_ent(map, u->slot, dl->index);
9349 set_imsm_ord_tbl_ent(migr_map, u->slot,
9350 dl->index | IMSM_ORD_REBUILD);
9351
9352 /* update the family_num to mark a new container
9353 * generation, being careful to record the existing
9354 * family_num in orig_family_num to clean up after
9355 * earlier mdadm versions that neglected to set it.
9356 */
9357 if (mpb->orig_family_num == 0)
9358 mpb->orig_family_num = mpb->family_num;
9359 mpb->family_num += super->random;
9360
9361 /* count arrays using the victim in the metadata */
9362 found = 0;
9363 for (a = active_array; a ; a = a->next) {
9364 dev = get_imsm_dev(super, a->info.container_member);
238c0a71 9365 map = get_imsm_map(dev, MAP_0);
061d7da3 9366
5961eeec 9367 if (get_imsm_disk_slot(map, victim) >= 0)
9368 found++;
9369 }
061d7da3 9370
5961eeec 9371 /* delete the victim if it is no longer being
9372 * utilized anywhere
061d7da3 9373 */
5961eeec 9374 if (!found) {
9375 struct dl **dlp;
061d7da3 9376
5961eeec 9377 /* We know that 'manager' isn't touching anything,
9378 * so it is safe to delete
9379 */
9380 for (dlp = &super->disks; *dlp; dlp = &(*dlp)->next)
061d7da3
LO		 9381 if ((*dlp)->index == victim)
9382 break;
5961eeec 9383
9384 /* victim may be on the missing list */
9385 if (!*dlp)
9386 for (dlp = &super->missing; *dlp;
9387 dlp = &(*dlp)->next)
9388 if ((*dlp)->index == victim)
9389 break;
9390 imsm_delete(super, dlp, victim);
9391 }
061d7da3
LO		 9392 }
9393
9394 return 1;
9395}
a29911da 9396
2e5dc010
N		 9397static int apply_reshape_container_disks_update(struct imsm_update_reshape *u,
9398 struct intel_super *super,
9399 void ***space_list)
9400{
9401 struct dl *new_disk;
9402 struct intel_dev *id;
9403 int i;
9404 int delta_disks = u->new_raid_disks - u->old_raid_disks;
ee4beede 9405 int disk_count = u->old_raid_disks;
2e5dc010
N		 9406 void **tofree = NULL;
9407 int devices_to_reshape = 1;
9408 struct imsm_super *mpb = super->anchor;
9409 int ret_val = 0;
d098291a 9410 unsigned int dev_id;
2e5dc010 9411
1ade5cc1 9412 dprintf("(enter)\n");
2e5dc010
N		 9413
9414 /* enable spares to use in array */
9415 for (i = 0; i < delta_disks; i++) {
9416 new_disk = get_disk_super(super,
9417 major(u->new_disks[i]),
9418 minor(u->new_disks[i]));
7a862a02 9419 dprintf("imsm: new disk for reshape is: %i:%i (%p, index = %i)\n",
2e5dc010
N		 9420 major(u->new_disks[i]), minor(u->new_disks[i]),
9421 new_disk, new_disk->index);
089f9d79
JS		 9422 if (new_disk == NULL ||
9423 (new_disk->index >= 0 &&
9424 new_disk->index < u->old_raid_disks))
2e5dc010 9425 goto update_reshape_exit;
ee4beede 9426 new_disk->index = disk_count++;
2e5dc010
N		 9427 /* slot to fill in autolayout
9428 */
9429 new_disk->raiddisk = new_disk->index;
9430 new_disk->disk.status |=
9431 CONFIGURED_DISK;
9432 new_disk->disk.status &= ~SPARE_DISK;
9433 }
9434
ed7333bd
AK		 9435 dprintf("imsm: volume set mpb->num_raid_devs = %i\n",
9436 mpb->num_raid_devs);
2e5dc010
N		 9437 /* manage changes in volume
9438 */
d098291a 9439 for (dev_id = 0; dev_id < mpb->num_raid_devs; dev_id++) {
2e5dc010
N		 9440 void **sp = *space_list;
9441 struct imsm_dev *newdev;
9442 struct imsm_map *newmap, *oldmap;
9443
d098291a
AK		 9444 for (id = super->devlist ; id; id = id->next) {
9445 if (id->index == dev_id)
9446 break;
9447 }
9448 if (id == NULL)
9449 break;
2e5dc010
N		 9450 if (!sp)
9451 continue;
9452 *space_list = *sp;
9453 newdev = (void*)sp;
9454 /* Copy the dev, but not (all of) the map */
9455 memcpy(newdev, id->dev, sizeof(*newdev));
238c0a71
AK		 9456 oldmap = get_imsm_map(id->dev, MAP_0);
9457 newmap = get_imsm_map(newdev, MAP_0);
2e5dc010
N		 9458 /* Copy the current map */
9459 memcpy(newmap, oldmap, sizeof_imsm_map(oldmap));
9460 /* update one device only
9461 */
9462 if (devices_to_reshape) {
ed7333bd
AK		 9463 dprintf("imsm: modifying subdev: %i\n",
9464 id->index);
2e5dc010
N		 9465 devices_to_reshape--;
9466 newdev->vol.migr_state = 1;
9467 newdev->vol.curr_migr_unit = 0;
ea672ee1 9468 set_migr_type(newdev, MIGR_GEN_MIGR);
2e5dc010
N		 9469 newmap->num_members = u->new_raid_disks;
9470 for (i = 0; i < delta_disks; i++) {
9471 set_imsm_ord_tbl_ent(newmap,
9472 u->old_raid_disks + i,
9473 u->old_raid_disks + i);
9474 }
9475 /* New map is correct, now need to save old map
9476 */
238c0a71 9477 newmap = get_imsm_map(newdev, MAP_1);
2e5dc010
N		 9478 memcpy(newmap, oldmap, sizeof_imsm_map(oldmap));
9479
f3871fdc 9480 imsm_set_array_size(newdev, -1);
2e5dc010
N		 9481 }
9482
9483 sp = (void **)id->dev;
9484 id->dev = newdev;
9485 *sp = tofree;
9486 tofree = sp;
8e59f3d8
AK		 9487
9488 /* Clear migration record */
9489 memset(super->migr_rec, 0, sizeof(struct migr_record));
2e5dc010 9490 }
819bc634
AK		 9491 if (tofree)
9492 *space_list = tofree;
2e5dc010
N		 9493 ret_val = 1;
9494
9495update_reshape_exit:
9496
9497 return ret_val;
9498}
9499
bb025c2f 9500static int apply_takeover_update(struct imsm_update_takeover *u,
8ca6df95
KW		 9501 struct intel_super *super,
9502 void ***space_list)
bb025c2f
KW		 9503{
9504 struct imsm_dev *dev = NULL;
8ca6df95
KW		 9505 struct intel_dev *dv;
9506 struct imsm_dev *dev_new;
bb025c2f
KW		 9507 struct imsm_map *map;
9508 struct dl *dm, *du;
8ca6df95 9509 int i;
bb025c2f
KW		 9510
9511 for (dv = super->devlist; dv; dv = dv->next)
9512 if (dv->index == (unsigned int)u->subarray) {
9513 dev = dv->dev;
9514 break;
9515 }
9516
9517 if (dev == NULL)
9518 return 0;
9519
238c0a71 9520 map = get_imsm_map(dev, MAP_0);
bb025c2f
KW		 9521
9522 if (u->direction == R10_TO_R0) {
06fb291a
PB		 9523 unsigned long long num_data_stripes;
9524
9525 map->num_domains = 1;
44490938 9526 num_data_stripes = imsm_dev_size(dev) / 2;
06fb291a
PB		 9527 num_data_stripes /= map->blocks_per_strip;
9528 num_data_stripes /= map->num_domains;
9529 set_num_data_stripes(map, num_data_stripes);
9530
43d5ec18 9531 /* Number of failed disks must be half of initial disk number */
3b451610
AK		 9532 if (imsm_count_failed(super, dev, MAP_0) !=
9533 (map->num_members / 2))
43d5ec18
KW		 9534 return 0;
9535
bb025c2f
KW		 9536 /* iterate through devices to mark removed disks as spare */
9537 for (dm = super->disks; dm; dm = dm->next) {
9538 if (dm->disk.status & FAILED_DISK) {
9539 int idx = dm->index;
9540 /* update indexes on the disk list */
9541/* FIXME this loop-with-the-loop looks wrong, I'm not convinced
9542 the index values will end up being correct.... NB */
9543 for (du = super->disks; du; du = du->next)
9544 if (du->index > idx)
9545 du->index--;
9546 /* mark as spare disk */
a8619d23 9547 mark_spare(dm);
bb025c2f
KW		 9548 }
9549 }
bb025c2f
KW		 9550 /* update map */
9551 map->num_members = map->num_members / 2;
9552 map->map_state = IMSM_T_STATE_NORMAL;
9553 map->num_domains = 1;
9554 map->raid_level = 0;
9555 map->failed_disk_num = -1;
9556 }
9557
8ca6df95
KW		 9558 if (u->direction == R0_TO_R10) {
9559 void **space;
9560 /* update slots in current disk list */
9561 for (dm = super->disks; dm; dm = dm->next) {
9562 if (dm->index >= 0)
9563 dm->index *= 2;
9564 }
9565 /* create new *missing* disks */
9566 for (i = 0; i < map->num_members; i++) {
9567 space = *space_list;
9568 if (!space)
9569 continue;
9570 *space_list = *space;
9571 du = (void *)space;
9572 memcpy(du, super->disks, sizeof(*du));
8ca6df95
KW		 9573 du->fd = -1;
9574 du->minor = 0;
9575 du->major = 0;
9576 du->index = (i * 2) + 1;
9577 sprintf((char *)du->disk.serial,
9578 " MISSING_%d", du->index);
9579 sprintf((char *)du->serial,
9580 "MISSING_%d", du->index);
9581 du->next = super->missing;
9582 super->missing = du;
9583 }
9584 /* create new dev and map */
9585 space = *space_list;
9586 if (!space)
9587 return 0;
9588 *space_list = *space;
9589 dev_new = (void *)space;
9590 memcpy(dev_new, dev, sizeof(*dev));
9591 /* update new map */
238c0a71 9592 map = get_imsm_map(dev_new, MAP_0);
8ca6df95 9593 map->num_members = map->num_members * 2;
1a2487c2 9594 map->map_state = IMSM_T_STATE_DEGRADED;
8ca6df95
KW		 9595 map->num_domains = 2;
9596 map->raid_level = 1;
9597 /* replace dev<->dev_new */
9598 dv->dev = dev_new;
9599 }
bb025c2f
KW		 9600 /* update disk order table */
9601 for (du = super->disks; du; du = du->next)
9602 if (du->index >= 0)
9603 set_imsm_ord_tbl_ent(map, du->index, du->index);
8ca6df95 9604 for (du = super->missing; du; du = du->next)
1a2487c2
KW		 9605 if (du->index >= 0) {
9606 set_imsm_ord_tbl_ent(map, du->index, du->index);
4c9e8c1e 9607 mark_missing(super, dv->dev, &du->disk, du->index);
1a2487c2 9608 }
bb025c2f
KW		 9609
9610 return 1;
9611}
9612
e8319a19
DW		 9613static void imsm_process_update(struct supertype *st,
9614 struct metadata_update *update)
9615{
9616 /**
9617 * crack open the metadata_update envelope to find the update record
9618 * update can be one of:
d195167d
AK		 9619 * update_reshape_container_disks - all the arrays in the container
9620 * are being reshaped to have more devices. We need to mark
9621 * the arrays for general migration and convert selected spares
9622 * into active devices.
9623 * update_activate_spare - a spare device has replaced a failed
1011e834
N		 9624 * device in an array, update the disk_ord_tbl. If this disk is
9625 * present in all member arrays then also clear the SPARE_DISK
9626 * flag
d195167d
AK		 9627 * update_create_array
9628 * update_kill_array
9629 * update_rename_array
9630 * update_add_remove_disk
e8319a19
DW		 9631 */
9632 struct intel_super *super = st->sb;
4d7b1503 9633 struct imsm_super *mpb;
e8319a19
DW		 9634 enum imsm_update_type type = *(enum imsm_update_type *) update->buf;
9635
4d7b1503
DW		 9636 /* update requires a larger buf but the allocation failed */
9637 if (super->next_len && !super->next_buf) {
9638 super->next_len = 0;
9639 return;
9640 }
9641
9642 if (super->next_buf) {
9643 memcpy(super->next_buf, super->buf, super->len);
9644 free(super->buf);
9645 super->len = super->next_len;
9646 super->buf = super->next_buf;
9647
9648 super->next_len = 0;
9649 super->next_buf = NULL;
9650 }
9651
9652 mpb = super->anchor;
9653
e8319a19 9654 switch (type) {
0ec5d470
AK		 9655 case update_general_migration_checkpoint: {
9656 struct intel_dev *id;
9657 struct imsm_update_general_migration_checkpoint *u =
9658 (void *)update->buf;
9659
1ade5cc1 9660 dprintf("called for update_general_migration_checkpoint\n");
0ec5d470
AK		 9661
9662 /* find device under general migration */
9663 for (id = super->devlist ; id; id = id->next) {
9664 if (is_gen_migration(id->dev)) {
9665 id->dev->vol.curr_migr_unit =
9666 __cpu_to_le32(u->curr_migr_unit);
9667 super->updates_pending++;
9668 }
9669 }
9670 break;
9671 }
bb025c2f
KW		 9672 case update_takeover: {
9673 struct imsm_update_takeover *u = (void *)update->buf;
1a2487c2
KW		 9674 if (apply_takeover_update(u, super, &update->space_list)) {
9675 imsm_update_version_info(super);
bb025c2f 9676 super->updates_pending++;
1a2487c2 9677 }
bb025c2f
KW		 9678 break;
9679 }
9680
78b10e66 9681 case update_reshape_container_disks: {
d195167d 9682 struct imsm_update_reshape *u = (void *)update->buf;
2e5dc010
N		 9683 if (apply_reshape_container_disks_update(
9684 u, super, &update->space_list))
9685 super->updates_pending++;
78b10e66
N		 9686 break;
9687 }
48c5303a 9688 case update_reshape_migration: {
a29911da
PC		 9689 struct imsm_update_reshape_migration *u = (void *)update->buf;
9690 if (apply_reshape_migration_update(
9691 u, super, &update->space_list))
9692 super->updates_pending++;
48c5303a
PC		 9693 break;
9694 }
f3871fdc
AK		 9695 case update_size_change: {
9696 struct imsm_update_size_change *u = (void *)update->buf;
9697 if (apply_size_change_update(u, super))
9698 super->updates_pending++;
9699 break;
9700 }
e8319a19 9701 case update_activate_spare: {
1011e834 9702 struct imsm_update_activate_spare *u = (void *) update->buf;
061d7da3
LO		 9703 if (apply_update_activate_spare(u, super, st->arrays))
9704 super->updates_pending++;
8273f55e
DW		 9705 break;
9706 }
9707 case update_create_array: {
9708 /* someone wants to create a new array, we need to be aware of
9709 * a few races/collisions:
9710 * 1/ 'Create' called by two separate instances of mdadm
9711 * 2/ 'Create' versus 'activate_spare': mdadm has chosen
9712 * devices that have since been assimilated via
9713 * activate_spare.
9714 * In the event this update can not be carried out mdadm will
9715 * (FIX ME) notice that its update did not take hold.
9716 */
9717 struct imsm_update_create_array *u = (void *) update->buf;
ba2de7ba 9718 struct intel_dev *dv;
8273f55e
DW		 9719 struct imsm_dev *dev;
9720 struct imsm_map *map, *new_map;
9721 unsigned long long start, end;
9722 unsigned long long new_start, new_end;
9723 int i;
54c2c1ea
DW		 9724 struct disk_info *inf;
9725 struct dl *dl;
8273f55e
DW		 9726
9727 /* handle racing creates: first come first serve */
9728 if (u->dev_idx < mpb->num_raid_devs) {
1ade5cc1 9729 dprintf("subarray %d already defined\n", u->dev_idx);
ba2de7ba 9730 goto create_error;
8273f55e
DW		 9731 }
9732
9733 /* check update is next in sequence */
9734 if (u->dev_idx != mpb->num_raid_devs) {
1ade5cc1
N		 9735 dprintf("can not create array %d expected index %d\n",
9736 u->dev_idx, mpb->num_raid_devs);
ba2de7ba 9737 goto create_error;
8273f55e
DW		 9738 }
9739
238c0a71 9740 new_map = get_imsm_map(&u->dev, MAP_0);
5551b113 9741 new_start = pba_of_lba0(new_map);
44490938 9742 new_end = new_start + per_dev_array_size(new_map);
54c2c1ea 9743 inf = get_disk_info(u);
8273f55e
DW		 9744
9745 /* handle activate_spare versus create race:
9746 * check to make sure that overlapping arrays do not include
9747 * overalpping disks
9748 */
9749 for (i = 0; i < mpb->num_raid_devs; i++) {
949c47a0 9750 dev = get_imsm_dev(super, i);
238c0a71 9751 map = get_imsm_map(dev, MAP_0);
5551b113 9752 start = pba_of_lba0(map);
44490938 9753 end = start + per_dev_array_size(map);
8273f55e
DW		 9754 if ((new_start >= start && new_start <= end) ||
9755 (start >= new_start && start <= new_end))
54c2c1ea
DW		 9756 /* overlap */;
9757 else
9758 continue;
9759
9760 if (disks_overlap(super, i, u)) {
1ade5cc1 9761 dprintf("arrays overlap\n");
ba2de7ba 9762 goto create_error;
8273f55e
DW		 9763 }
9764 }
8273f55e 9765
949c47a0
DW		 9766 /* check that prepare update was successful */
9767 if (!update->space) {
1ade5cc1 9768 dprintf("prepare update failed\n");
ba2de7ba 9769 goto create_error;
949c47a0
DW		 9770 }
9771
54c2c1ea
DW		 9772 /* check that all disks are still active before committing
9773 * changes. FIXME: could we instead handle this by creating a
9774 * degraded array? That's probably not what the user expects,
9775 * so better to drop this update on the floor.
9776 */
9777 for (i = 0; i < new_map->num_members; i++) {
9778 dl = serial_to_dl(inf[i].serial, super);
9779 if (!dl) {
1ade5cc1 9780 dprintf("disk disappeared\n");
ba2de7ba 9781 goto create_error;
54c2c1ea 9782 }
949c47a0
DW		 9783 }
9784
8273f55e 9785 super->updates_pending++;
54c2c1ea
DW		 9786
9787 /* convert spares to members and fixup ord_tbl */
9788 for (i = 0; i < new_map->num_members; i++) {
9789 dl = serial_to_dl(inf[i].serial, super);
9790 if (dl->index == -1) {
9791 dl->index = mpb->num_disks;
9792 mpb->num_disks++;
9793 dl->disk.status |= CONFIGURED_DISK;
9794 dl->disk.status &= ~SPARE_DISK;
9795 }
9796 set_imsm_ord_tbl_ent(new_map, i, dl->index);
9797 }
9798
ba2de7ba
DW		 9799 dv = update->space;
9800 dev = dv->dev;
949c47a0
DW		 9801 update->space = NULL;
9802 imsm_copy_dev(dev, &u->dev);
ba2de7ba
DW		 9803 dv->index = u->dev_idx;
9804 dv->next = super->devlist;
9805 super->devlist = dv;
8273f55e 9806 mpb->num_raid_devs++;
8273f55e 9807
4d1313e9 9808 imsm_update_version_info(super);
8273f55e 9809 break;
ba2de7ba
DW		 9810 create_error:
9811 /* mdmon knows how to release update->space, but not
9812 * ((struct intel_dev *) update->space)->dev
9813 */
9814 if (update->space) {
9815 dv = update->space;
9816 free(dv->dev);
9817 }
8273f55e 9818 break;
e8319a19 9819 }
33414a01
DW		 9820 case update_kill_array: {
9821 struct imsm_update_kill_array *u = (void *) update->buf;
9822 int victim = u->dev_idx;
9823 struct active_array *a;
9824 struct intel_dev **dp;
9825 struct imsm_dev *dev;
9826
9827 /* sanity check that we are not affecting the uuid of
9828 * active arrays, or deleting an active array
9829 *
9830 * FIXME when immutable ids are available, but note that
9831 * we'll also need to fixup the invalidated/active
9832 * subarray indexes in mdstat
9833 */
9834 for (a = st->arrays; a; a = a->next)
9835 if (a->info.container_member >= victim)
9836 break;
9837 /* by definition if mdmon is running at least one array
9838 * is active in the container, so checking
9839 * mpb->num_raid_devs is just extra paranoia
9840 */
9841 dev = get_imsm_dev(super, victim);
9842 if (a || !dev || mpb->num_raid_devs == 1) {
9843 dprintf("failed to delete subarray-%d\n", victim);
9844 break;
9845 }
9846
9847 for (dp = &super->devlist; *dp;)
f21e18ca 9848 if ((*dp)->index == (unsigned)super->current_vol) {
33414a01
DW		 9849 *dp = (*dp)->next;
9850 } else {
f21e18ca 9851 if ((*dp)->index > (unsigned)victim)
33414a01
DW		 9852 (*dp)->index--;
9853 dp = &(*dp)->next;
9854 }
9855 mpb->num_raid_devs--;
9856 super->updates_pending++;
9857 break;
9858 }
aa534678
DW		 9859 case update_rename_array: {
9860 struct imsm_update_rename_array *u = (void *) update->buf;
9861 char name[MAX_RAID_SERIAL_LEN+1];
9862 int target = u->dev_idx;
9863 struct active_array *a;
9864 struct imsm_dev *dev;
9865
9866 /* sanity check that we are not affecting the uuid of
9867 * an active array
9868 */
9869 snprintf(name, MAX_RAID_SERIAL_LEN, "%s", (char *) u->name);
9870 name[MAX_RAID_SERIAL_LEN] = '\0';
9871 for (a = st->arrays; a; a = a->next)
9872 if (a->info.container_member == target)
9873 break;
9874 dev = get_imsm_dev(super, u->dev_idx);
9875 if (a || !dev || !check_name(super, name, 1)) {
9876 dprintf("failed to rename subarray-%d\n", target);
9877 break;
9878 }
9879
cdbe98cd 9880 snprintf((char *) dev->volume, MAX_RAID_SERIAL_LEN, "%s", name);
aa534678
DW		 9881 super->updates_pending++;
9882 break;
9883 }
1a64be56 9884 case update_add_remove_disk: {
43dad3d6 9885 /* we may be able to repair some arrays if disks are
095b8088 9886 * being added, check the status of add_remove_disk
1a64be56
LM		 9887 * if discs has been added.
9888 */
9889 if (add_remove_disk_update(super)) {
43dad3d6 9890 struct active_array *a;
072b727f
DW		 9891
9892 super->updates_pending++;
1a64be56 9893 for (a = st->arrays; a; a = a->next)
43dad3d6
DW		 9894 a->check_degraded = 1;
9895 }
43dad3d6 9896 break;
e8319a19 9897 }
bbab0940
TM		 9898 case update_prealloc_badblocks_mem:
9899 break;
e6e9dd3f
AP		 9900 case update_rwh_policy: {
9901 struct imsm_update_rwh_policy *u = (void *)update->buf;
9902 int target = u->dev_idx;
9903 struct imsm_dev *dev = get_imsm_dev(super, target);
9904 if (!dev) {
9905 dprintf("could not find subarray-%d\n", target);
9906 break;
9907 }
9908
9909 if (dev->rwh_policy != u->new_policy) {
9910 dev->rwh_policy = u->new_policy;
9911 super->updates_pending++;
9912 }
9913 break;
9914 }
1a64be56 9915 default:
7a862a02 9916 pr_err("error: unsuported process update type:(type: %d)\n", type);
1a64be56 9917 }
e8319a19 9918}
88758e9d 9919
bc0b9d34
PC		 9920static struct mdinfo *get_spares_for_grow(struct supertype *st);
9921
5fe6f031
N		 9922static int imsm_prepare_update(struct supertype *st,
9923 struct metadata_update *update)
8273f55e 9924{
949c47a0 9925 /**
4d7b1503
DW		 9926 * Allocate space to hold new disk entries, raid-device entries or a new
9927 * mpb if necessary. The manager synchronously waits for updates to
9928 * complete in the monitor, so new mpb buffers allocated here can be
9929 * integrated by the monitor thread without worrying about live pointers
9930 * in the manager thread.
8273f55e 9931 */
095b8088 9932 enum imsm_update_type type;
4d7b1503 9933 struct intel_super *super = st->sb;
f36a9ecd 9934 unsigned int sector_size = super->sector_size;
4d7b1503
DW		 9935 struct imsm_super *mpb = super->anchor;
9936 size_t buf_len;
9937 size_t len = 0;
949c47a0 9938
095b8088
N		 9939 if (update->len < (int)sizeof(type))
9940 return 0;
9941
9942 type = *(enum imsm_update_type *) update->buf;
9943
949c47a0 9944 switch (type) {
0ec5d470 9945 case update_general_migration_checkpoint:
095b8088
N		 9946 if (update->len < (int)sizeof(struct imsm_update_general_migration_checkpoint))
9947 return 0;
1ade5cc1 9948 dprintf("called for update_general_migration_checkpoint\n");
0ec5d470 9949 break;
abedf5fc
KW		 9950 case update_takeover: {
9951 struct imsm_update_takeover *u = (void *)update->buf;
095b8088
N		 9952 if (update->len < (int)sizeof(*u))
9953 return 0;
abedf5fc
KW		 9954 if (u->direction == R0_TO_R10) {
9955 void **tail = (void **)&update->space_list;
9956 struct imsm_dev *dev = get_imsm_dev(super, u->subarray);
238c0a71 9957 struct imsm_map *map = get_imsm_map(dev, MAP_0);
abedf5fc
KW		 9958 int num_members = map->num_members;
9959 void *space;
9960 int size, i;
abedf5fc
KW		 9961 /* allocate memory for added disks */
9962 for (i = 0; i < num_members; i++) {
9963 size = sizeof(struct dl);
503975b9 9964 space = xmalloc(size);
abedf5fc
KW		 9965 *tail = space;
9966 tail = space;
9967 *tail = NULL;
9968 }
9969 /* allocate memory for new device */
9970 size = sizeof_imsm_dev(super->devlist->dev, 0) +
9971 (num_members * sizeof(__u32));
503975b9
N		 9972 space = xmalloc(size);
9973 *tail = space;
9974 tail = space;
9975 *tail = NULL;
9976 len = disks_to_mpb_size(num_members * 2);
abedf5fc
KW		 9977 }
9978
9979 break;
9980 }
78b10e66 9981 case update_reshape_container_disks: {
d195167d
AK		 9982 /* Every raid device in the container is about to
9983 * gain some more devices, and we will enter a
9984 * reconfiguration.
9985 * So each 'imsm_map' will be bigger, and the imsm_vol
9986 * will now hold 2 of them.
9987 * Thus we need new 'struct imsm_dev' allocations sized
9988 * as sizeof_imsm_dev but with more devices in both maps.
9989 */
9990 struct imsm_update_reshape *u = (void *)update->buf;
9991 struct intel_dev *dl;
9992 void **space_tail = (void**)&update->space_list;
9993
095b8088
N		 9994 if (update->len < (int)sizeof(*u))
9995 return 0;
9996
1ade5cc1 9997 dprintf("for update_reshape\n");
d195167d
AK		 9998
9999 for (dl = super->devlist; dl; dl = dl->next) {
10000 int size = sizeof_imsm_dev(dl->dev, 1);
10001 void *s;
d677e0b8
AK		 10002 if (u->new_raid_disks > u->old_raid_disks)
10003 size += sizeof(__u32)*2*
10004 (u->new_raid_disks - u->old_raid_disks);
503975b9 10005 s = xmalloc(size);
d195167d
AK		 10006 *space_tail = s;
10007 space_tail = s;
10008 *space_tail = NULL;
10009 }
10010
10011 len = disks_to_mpb_size(u->new_raid_disks);
10012 dprintf("New anchor length is %llu\n", (unsigned long long)len);
78b10e66
N		 10013 break;
10014 }
48c5303a 10015 case update_reshape_migration: {
bc0b9d34
PC		 10016 /* for migration level 0->5 we need to add disks
10017 * so the same as for container operation we will copy
10018 * device to the bigger location.
10019 * in memory prepared device and new disk area are prepared
10020 * for usage in process update
10021 */
10022 struct imsm_update_reshape_migration *u = (void *)update->buf;
10023 struct intel_dev *id;
10024 void **space_tail = (void **)&update->space_list;
10025 int size;
10026 void *s;
10027 int current_level = -1;
10028
095b8088
N		 10029 if (update->len < (int)sizeof(*u))
10030 return 0;
10031
1ade5cc1 10032 dprintf("for update_reshape\n");
bc0b9d34
PC		 10033
10034 /* add space for bigger array in update
10035 */
10036 for (id = super->devlist; id; id = id->next) {
10037 if (id->index == (unsigned)u->subdev) {
10038 size = sizeof_imsm_dev(id->dev, 1);
10039 if (u->new_raid_disks > u->old_raid_disks)
10040 size += sizeof(__u32)*2*
10041 (u->new_raid_disks - u->old_raid_disks);
503975b9 10042 s = xmalloc(size);
bc0b9d34
PC		 10043 *space_tail = s;
10044 space_tail = s;
10045 *space_tail = NULL;
10046 break;
10047 }
10048 }
10049 if (update->space_list == NULL)
10050 break;
10051
10052 /* add space for disk in update
10053 */
10054 size = sizeof(struct dl);
503975b9 10055 s = xmalloc(size);
bc0b9d34
PC		 10056 *space_tail = s;
10057 space_tail = s;
10058 *space_tail = NULL;
10059
10060 /* add spare device to update
10061 */
10062 for (id = super->devlist ; id; id = id->next)
10063 if (id->index == (unsigned)u->subdev) {
10064 struct imsm_dev *dev;
10065 struct imsm_map *map;
10066
10067 dev = get_imsm_dev(super, u->subdev);
238c0a71 10068 map = get_imsm_map(dev, MAP_0);
bc0b9d34
PC		 10069 current_level = map->raid_level;
10070 break;
10071 }
089f9d79 10072 if (u->new_level == 5 && u->new_level != current_level) {
bc0b9d34
PC		 10073 struct mdinfo *spares;
10074
10075 spares = get_spares_for_grow(st);
10076 if (spares) {
10077 struct dl *dl;
10078 struct mdinfo *dev;
10079
10080 dev = spares->devs;
10081 if (dev) {
10082 u->new_disks[0] =
10083 makedev(dev->disk.major,
10084 dev->disk.minor);
10085 dl = get_disk_super(super,
10086 dev->disk.major,
10087 dev->disk.minor);
10088 dl->index = u->old_raid_disks;
10089 dev = dev->next;
10090 }
10091 sysfs_free(spares);
10092 }
10093 }
10094 len = disks_to_mpb_size(u->new_raid_disks);
10095 dprintf("New anchor length is %llu\n", (unsigned long long)len);
48c5303a
PC		 10096 break;
10097 }
f3871fdc 10098 case update_size_change: {
095b8088
N		 10099 if (update->len < (int)sizeof(struct imsm_update_size_change))
10100 return 0;
10101 break;
10102 }
10103 case update_activate_spare: {
10104 if (update->len < (int)sizeof(struct imsm_update_activate_spare))
10105 return 0;
f3871fdc
AK		 10106 break;
10107 }
949c47a0
DW		 10108 case update_create_array: {
10109 struct imsm_update_create_array *u = (void *) update->buf;
ba2de7ba 10110 struct intel_dev *dv;
54c2c1ea 10111 struct imsm_dev *dev = &u->dev;
238c0a71 10112 struct imsm_map *map = get_imsm_map(dev, MAP_0);
54c2c1ea
DW		 10113 struct dl *dl;
10114 struct disk_info *inf;
10115 int i;
10116 int activate = 0;
949c47a0 10117
095b8088
N		 10118 if (update->len < (int)sizeof(*u))
10119 return 0;
10120
54c2c1ea
DW		 10121 inf = get_disk_info(u);
10122 len = sizeof_imsm_dev(dev, 1);
ba2de7ba 10123 /* allocate a new super->devlist entry */
503975b9
N		 10124 dv = xmalloc(sizeof(*dv));
10125 dv->dev = xmalloc(len);
10126 update->space = dv;
949c47a0 10127
54c2c1ea
DW		 10128 /* count how many spares will be converted to members */
10129 for (i = 0; i < map->num_members; i++) {
10130 dl = serial_to_dl(inf[i].serial, super);
10131 if (!dl) {
10132 /* hmm maybe it failed?, nothing we can do about
10133 * it here
10134 */
10135 continue;
10136 }
10137 if (count_memberships(dl, super) == 0)
10138 activate++;
10139 }
10140 len += activate * sizeof(struct imsm_disk);
949c47a0 10141 break;
095b8088
N		 10142 }
10143 case update_kill_array: {
10144 if (update->len < (int)sizeof(struct imsm_update_kill_array))
10145 return 0;
949c47a0
DW		 10146 break;
10147 }
095b8088
N		 10148 case update_rename_array: {
10149 if (update->len < (int)sizeof(struct imsm_update_rename_array))
10150 return 0;
10151 break;
10152 }
10153 case update_add_remove_disk:
10154 /* no update->len needed */
10155 break;
bbab0940
TM		 10156 case update_prealloc_badblocks_mem:
10157 super->extra_space += sizeof(struct bbm_log) -
10158 get_imsm_bbm_log_size(super->bbm_log);
10159 break;
e6e9dd3f
AP		 10160 case update_rwh_policy: {
10161 if (update->len < (int)sizeof(struct imsm_update_rwh_policy))
10162 return 0;
10163 break;
10164 }
095b8088
N		 10165 default:
10166 return 0;
949c47a0 10167 }
8273f55e 10168
4d7b1503
DW		 10169 /* check if we need a larger metadata buffer */
10170 if (super->next_buf)
10171 buf_len = super->next_len;
10172 else
10173 buf_len = super->len;
10174
bbab0940 10175 if (__le32_to_cpu(mpb->mpb_size) + super->extra_space + len > buf_len) {
4d7b1503
DW		 10176 /* ok we need a larger buf than what is currently allocated
10177 * if this allocation fails process_update will notice that
10178 * ->next_len is set and ->next_buf is NULL
10179 */
bbab0940
TM		 10180 buf_len = ROUND_UP(__le32_to_cpu(mpb->mpb_size) +
10181 super->extra_space + len, sector_size);
4d7b1503
DW		 10182 if (super->next_buf)
10183 free(super->next_buf);
10184
10185 super->next_len = buf_len;
f36a9ecd 10186 if (posix_memalign(&super->next_buf, sector_size, buf_len) == 0)
1f45a8ad
DW		 10187 memset(super->next_buf, 0, buf_len);
10188 else
4d7b1503
DW		 10189 super->next_buf = NULL;
10190 }
5fe6f031 10191 return 1;
8273f55e
DW		 10192}
10193
ae6aad82 10194/* must be called while manager is quiesced */
f21e18ca 10195static void imsm_delete(struct intel_super *super, struct dl **dlp, unsigned index)
ae6aad82
DW		 10196{
10197 struct imsm_super *mpb = super->anchor;
ae6aad82
DW		 10198 struct dl *iter;
10199 struct imsm_dev *dev;
10200 struct imsm_map *map;
4c9e8c1e 10201 unsigned int i, j, num_members;
fb12a745 10202 __u32 ord, ord_map0;
4c9e8c1e 10203 struct bbm_log *log = super->bbm_log;
ae6aad82 10204
1ade5cc1 10205 dprintf("deleting device[%d] from imsm_super\n", index);
ae6aad82
DW		 10206
10207 /* shift all indexes down one */
10208 for (iter = super->disks; iter; iter = iter->next)
f21e18ca 10209 if (iter->index > (int)index)
ae6aad82 10210 iter->index--;
47ee5a45 10211 for (iter = super->missing; iter; iter = iter->next)
f21e18ca 10212 if (iter->index > (int)index)
47ee5a45 10213 iter->index--;
ae6aad82
DW		 10214
10215 for (i = 0; i < mpb->num_raid_devs; i++) {
10216 dev = get_imsm_dev(super, i);
238c0a71 10217 map = get_imsm_map(dev, MAP_0);
24565c9a
DW		 10218 num_members = map->num_members;
10219 for (j = 0; j < num_members; j++) {
10220 /* update ord entries being careful not to propagate
10221 * ord-flags to the first map
10222 */
238c0a71 10223 ord = get_imsm_ord_tbl_ent(dev, j, MAP_X);
fb12a745 10224 ord_map0 = get_imsm_ord_tbl_ent(dev, j, MAP_0);
ae6aad82 10225
24565c9a
DW		 10226 if (ord_to_idx(ord) <= index)
10227 continue;
ae6aad82 10228
238c0a71 10229 map = get_imsm_map(dev, MAP_0);
fb12a745 10230 set_imsm_ord_tbl_ent(map, j, ord_map0 - 1);
238c0a71 10231 map = get_imsm_map(dev, MAP_1);
24565c9a
DW		 10232 if (map)
10233 set_imsm_ord_tbl_ent(map, j, ord - 1);
ae6aad82
DW		 10234 }
10235 }
10236
4c9e8c1e
TM		 10237 for (i = 0; i < log->entry_count; i++) {
10238 struct bbm_log_entry *entry = &log->marked_block_entries[i];
10239
10240 if (entry->disk_ordinal <= index)
10241 continue;
10242 entry->disk_ordinal--;
10243 }
10244
ae6aad82
DW		 10245 mpb->num_disks--;
10246 super->updates_pending++;
24565c9a
DW		 10247 if (*dlp) {
10248 struct dl *dl = *dlp;
10249
10250 *dlp = (*dlp)->next;
10251 __free_imsm_disk(dl);
10252 }
ae6aad82 10253}
9a717282
AK		 10254
10255static void close_targets(int *targets, int new_disks)
10256{
10257 int i;
10258
10259 if (!targets)
10260 return;
10261
10262 for (i = 0; i < new_disks; i++) {
10263 if (targets[i] >= 0) {
10264 close(targets[i]);
10265 targets[i] = -1;
10266 }
10267 }
10268}
10269
10270static int imsm_get_allowed_degradation(int level, int raid_disks,
10271 struct intel_super *super,
10272 struct imsm_dev *dev)
10273{
10274 switch (level) {
bf5cf7c7 10275 case 1:
9a717282
AK		 10276 case 10:{
10277 int ret_val = 0;
10278 struct imsm_map *map;
10279 int i;
10280
10281 ret_val = raid_disks/2;
10282 /* check map if all disks pairs not failed
10283 * in both maps
10284 */
238c0a71 10285 map = get_imsm_map(dev, MAP_0);
9a717282
AK		 10286 for (i = 0; i < ret_val; i++) {
10287 int degradation = 0;
10288 if (get_imsm_disk(super, i) == NULL)
10289 degradation++;
10290 if (get_imsm_disk(super, i + 1) == NULL)
10291 degradation++;
10292 if (degradation == 2)
10293 return 0;
10294 }
238c0a71 10295 map = get_imsm_map(dev, MAP_1);
9a717282
AK		 10296 /* if there is no second map
10297 * result can be returned
10298 */
10299 if (map == NULL)
10300 return ret_val;
10301 /* check degradation in second map
10302 */
10303 for (i = 0; i < ret_val; i++) {
10304 int degradation = 0;
10305 if (get_imsm_disk(super, i) == NULL)
10306 degradation++;
10307 if (get_imsm_disk(super, i + 1) == NULL)
10308 degradation++;
10309 if (degradation == 2)
10310 return 0;
10311 }
10312 return ret_val;
10313 }
10314 case 5:
10315 return 1;
10316 case 6:
10317 return 2;
10318 default:
10319 return 0;
10320 }
10321}
10322
687629c2
AK		 10323/*******************************************************************************
10324 * Function: open_backup_targets
10325 * Description: Function opens file descriptors for all devices given in
10326 * info->devs
10327 * Parameters:
10328 * info : general array info
10329 * raid_disks : number of disks
10330 * raid_fds : table of device's file descriptors
9a717282
AK		 10331 * super : intel super for raid10 degradation check
10332 * dev : intel device for raid10 degradation check
687629c2
AK		 10333 * Returns:
10334 * 0 : success
10335 * -1 : fail
10336 ******************************************************************************/
9a717282
AK		 10337int open_backup_targets(struct mdinfo *info, int raid_disks, int *raid_fds,
10338 struct intel_super *super, struct imsm_dev *dev)
687629c2
AK		 10339{
10340 struct mdinfo *sd;
f627f5ad 10341 int i;
9a717282 10342 int opened = 0;
f627f5ad
AK		 10343
10344 for (i = 0; i < raid_disks; i++)
10345 raid_fds[i] = -1;
687629c2
AK		 10346
10347 for (sd = info->devs ; sd ; sd = sd->next) {
10348 char *dn;
10349
10350 if (sd->disk.state & (1<<MD_DISK_FAULTY)) {
10351 dprintf("disk is faulty!!\n");
10352 continue;
10353 }
10354
089f9d79 10355 if (sd->disk.raid_disk >= raid_disks || sd->disk.raid_disk < 0)
687629c2
AK		 10356 continue;
10357
10358 dn = map_dev(sd->disk.major,
10359 sd->disk.minor, 1);
10360 raid_fds[sd->disk.raid_disk] = dev_open(dn, O_RDWR);
10361 if (raid_fds[sd->disk.raid_disk] < 0) {
e12b3daa 10362 pr_err("cannot open component\n");
9a717282 10363 continue;
687629c2 10364 }
9a717282
AK		 10365 opened++;
10366 }
10367 /* check if maximum array degradation level is not exceeded
10368 */
10369 if ((raid_disks - opened) >
089f9d79
JS		 10370 imsm_get_allowed_degradation(info->new_level, raid_disks,
10371 super, dev)) {
e12b3daa 10372 pr_err("Not enough disks can be opened.\n");
9a717282
AK		 10373 close_targets(raid_fds, raid_disks);
10374 return -2;
687629c2
AK		 10375 }
10376 return 0;
10377}
10378
d31ad643
PB		 10379/*******************************************************************************
10380 * Function: validate_container_imsm
10381 * Description: This routine validates container after assemble,
10382 * eg. if devices in container are under the same controller.
10383 *
10384 * Parameters:
10385 * info : linked list with info about devices used in array
10386 * Returns:
10387 * 1 : HBA mismatch
10388 * 0 : Success
10389 ******************************************************************************/
10390int validate_container_imsm(struct mdinfo *info)
10391{
6b781d33
AP		 10392 if (check_env("IMSM_NO_PLATFORM"))
10393 return 0;
d31ad643 10394
6b781d33
AP		 10395 struct sys_dev *idev;
10396 struct sys_dev *hba = NULL;
10397 struct sys_dev *intel_devices = find_intel_devices();
10398 char *dev_path = devt_to_devpath(makedev(info->disk.major,
10399 info->disk.minor));
10400
10401 for (idev = intel_devices; idev; idev = idev->next) {
10402 if (dev_path && strstr(dev_path, idev->path)) {
10403 hba = idev;
10404 break;
d31ad643 10405 }
6b781d33
AP		 10406 }
10407 if (dev_path)
d31ad643
PB		 10408 free(dev_path);
10409
6b781d33
AP		 10410 if (!hba) {
10411 pr_err("WARNING - Cannot detect HBA for device %s!\n",
10412 devid2kname(makedev(info->disk.major, info->disk.minor)));
10413 return 1;
10414 }
10415
10416 const struct imsm_orom *orom = get_orom_by_device_id(hba->dev_id);
10417 struct mdinfo *dev;
10418
10419 for (dev = info->next; dev; dev = dev->next) {
10420 dev_path = devt_to_devpath(makedev(dev->disk.major, dev->disk.minor));
10421
10422 struct sys_dev *hba2 = NULL;
10423 for (idev = intel_devices; idev; idev = idev->next) {
10424 if (dev_path && strstr(dev_path, idev->path)) {
10425 hba2 = idev;
10426 break;
d31ad643
PB		 10427 }
10428 }
6b781d33
AP		 10429 if (dev_path)
10430 free(dev_path);
10431
10432 const struct imsm_orom *orom2 = hba2 == NULL ? NULL :
10433 get_orom_by_device_id(hba2->dev_id);
10434
10435 if (hba2 && hba->type != hba2->type) {
10436 pr_err("WARNING - HBAs of devices do not match %s != %s\n",
10437 get_sys_dev_type(hba->type), get_sys_dev_type(hba2->type));
10438 return 1;
10439 }
10440
07cb1e57 10441 if (orom != orom2) {
6b781d33
AP		 10442 pr_err("WARNING - IMSM container assembled with disks under different HBAs!\n"
10443 " This operation is not supported and can lead to data loss.\n");
10444 return 1;
10445 }
10446
10447 if (!orom) {
10448 pr_err("WARNING - IMSM container assembled with disks under HBAs without IMSM platform support!\n"
10449 " This operation is not supported and can lead to data loss.\n");
10450 return 1;
10451 }
d31ad643 10452 }
6b781d33 10453
d31ad643
PB		 10454 return 0;
10455}
32141c17 10456
6f50473f
TM		 10457/*******************************************************************************
10458* Function: imsm_record_badblock
10459* Description: This routine stores new bad block record in BBM log
10460*
10461* Parameters:
10462* a : array containing a bad block
10463* slot : disk number containing a bad block
10464* sector : bad block sector
10465* length : bad block sectors range
10466* Returns:
10467* 1 : Success
10468* 0 : Error
10469******************************************************************************/
10470static int imsm_record_badblock(struct active_array *a, int slot,
10471 unsigned long long sector, int length)
10472{
10473 struct intel_super *super = a->container->sb;
10474 int ord;
10475 int ret;
10476
10477 ord = imsm_disk_slot_to_ord(a, slot);
10478 if (ord < 0)
10479 return 0;
10480
10481 ret = record_new_badblock(super->bbm_log, ord_to_idx(ord), sector,
10482 length);
10483 if (ret)
10484 super->updates_pending++;
10485
10486 return ret;
10487}
c07a5a4f
TM		 10488/*******************************************************************************
10489* Function: imsm_clear_badblock
10490* Description: This routine clears bad block record from BBM log
10491*
10492* Parameters:
10493* a : array containing a bad block
10494* slot : disk number containing a bad block
10495* sector : bad block sector
10496* length : bad block sectors range
10497* Returns:
10498* 1 : Success
10499* 0 : Error
10500******************************************************************************/
10501static int imsm_clear_badblock(struct active_array *a, int slot,
10502 unsigned long long sector, int length)
10503{
10504 struct intel_super *super = a->container->sb;
10505 int ord;
10506 int ret;
10507
10508 ord = imsm_disk_slot_to_ord(a, slot);
10509 if (ord < 0)
10510 return 0;
10511
10512 ret = clear_badblock(super->bbm_log, ord_to_idx(ord), sector, length);
10513 if (ret)
10514 super->updates_pending++;
10515
10516 return ret;
10517}
928f1424
TM		 10518/*******************************************************************************
10519* Function: imsm_get_badblocks
10520* Description: This routine get list of bad blocks for an array
10521*
10522* Parameters:
10523* a : array
10524* slot : disk number
10525* Returns:
10526* bb : structure containing bad blocks
10527* NULL : error
10528******************************************************************************/
10529static struct md_bb *imsm_get_badblocks(struct active_array *a, int slot)
10530{
10531 int inst = a->info.container_member;
10532 struct intel_super *super = a->container->sb;
10533 struct imsm_dev *dev = get_imsm_dev(super, inst);
10534 struct imsm_map *map = get_imsm_map(dev, MAP_0);
10535 int ord;
10536
10537 ord = imsm_disk_slot_to_ord(a, slot);
10538 if (ord < 0)
10539 return NULL;
10540
10541 get_volume_badblocks(super->bbm_log, ord_to_idx(ord), pba_of_lba0(map),
44490938 10542 per_dev_array_size(map), &super->bb);
928f1424
TM		 10543
10544 return &super->bb;
10545}
27156a57
TM		 10546/*******************************************************************************
10547* Function: examine_badblocks_imsm
10548* Description: Prints list of bad blocks on a disk to the standard output
10549*
10550* Parameters:
10551* st : metadata handler
10552* fd : open file descriptor for device
10553* devname : device name
10554* Returns:
10555* 0 : Success
10556* 1 : Error
10557******************************************************************************/
10558static int examine_badblocks_imsm(struct supertype *st, int fd, char *devname)
10559{
10560 struct intel_super *super = st->sb;
10561 struct bbm_log *log = super->bbm_log;
10562 struct dl *d = NULL;
10563 int any = 0;
10564
10565 for (d = super->disks; d ; d = d->next) {
10566 if (strcmp(d->devname, devname) == 0)
10567 break;
10568 }
10569
10570 if ((d == NULL) || (d->index < 0)) { /* serial mismatch probably */
10571 pr_err("%s doesn't appear to be part of a raid array\n",
10572 devname);
10573 return 1;
10574 }
10575
10576 if (log != NULL) {
10577 unsigned int i;
10578 struct bbm_log_entry *entry = &log->marked_block_entries[0];
10579
10580 for (i = 0; i < log->entry_count; i++) {
10581 if (entry[i].disk_ordinal == d->index) {
10582 unsigned long long sector = __le48_to_cpu(
10583 &entry[i].defective_block_start);
10584 int cnt = entry[i].marked_count + 1;
10585
10586 if (!any) {
10587 printf("Bad-blocks on %s:\n", devname);
10588 any = 1;
10589 }
10590
10591 printf("%20llu for %d sectors\n", sector, cnt);
10592 }
10593 }
10594 }
10595
10596 if (!any)
10597 printf("No bad-blocks list configured on %s\n", devname);
10598
10599 return 0;
10600}
687629c2
AK		 10601/*******************************************************************************
10602 * Function: init_migr_record_imsm
10603 * Description: Function inits imsm migration record
10604 * Parameters:
10605 * super : imsm internal array info
10606 * dev : device under migration
10607 * info : general array info to find the smallest device
10608 * Returns:
10609 * none
10610 ******************************************************************************/
10611void init_migr_record_imsm(struct supertype *st, struct imsm_dev *dev,
10612 struct mdinfo *info)
10613{
10614 struct intel_super *super = st->sb;
10615 struct migr_record *migr_rec = super->migr_rec;
10616 int new_data_disks;
10617 unsigned long long dsize, dev_sectors;
10618 long long unsigned min_dev_sectors = -1LLU;
10619 struct mdinfo *sd;
10620 char nm[30];
10621 int fd;
238c0a71
AK		 10622 struct imsm_map *map_dest = get_imsm_map(dev, MAP_0);
10623 struct imsm_map *map_src = get_imsm_map(dev, MAP_1);
687629c2 10624 unsigned long long num_migr_units;
3ef4403c 10625 unsigned long long array_blocks;
687629c2
AK		 10626
10627 memset(migr_rec, 0, sizeof(struct migr_record));
10628 migr_rec->family_num = __cpu_to_le32(super->anchor->family_num);
10629
10630 /* only ascending reshape supported now */
10631 migr_rec->ascending_migr = __cpu_to_le32(1);
10632
10633 migr_rec->dest_depth_per_unit = GEN_MIGR_AREA_SIZE /
10634 max(map_dest->blocks_per_strip, map_src->blocks_per_strip);
e1742195
AK		 10635 migr_rec->dest_depth_per_unit *=
10636 max(map_dest->blocks_per_strip, map_src->blocks_per_strip);
9529d343 10637 new_data_disks = imsm_num_data_members(map_dest);
687629c2
AK		 10638 migr_rec->blocks_per_unit =
10639 __cpu_to_le32(migr_rec->dest_depth_per_unit * new_data_disks);
10640 migr_rec->dest_depth_per_unit =
10641 __cpu_to_le32(migr_rec->dest_depth_per_unit);
3ef4403c 10642 array_blocks = info->component_size * new_data_disks;
687629c2
AK		 10643 num_migr_units =
10644 array_blocks / __le32_to_cpu(migr_rec->blocks_per_unit);
10645
10646 if (array_blocks % __le32_to_cpu(migr_rec->blocks_per_unit))
10647 num_migr_units++;
10648 migr_rec->num_migr_units = __cpu_to_le32(num_migr_units);
10649
10650 migr_rec->post_migr_vol_cap = dev->size_low;
10651 migr_rec->post_migr_vol_cap_hi = dev->size_high;
10652
687629c2
AK		 10653 /* Find the smallest dev */
10654 for (sd = info->devs ; sd ; sd = sd->next) {
10655 sprintf(nm, "%d:%d", sd->disk.major, sd->disk.minor);
10656 fd = dev_open(nm, O_RDONLY);
10657 if (fd < 0)
10658 continue;
10659 get_dev_size(fd, NULL, &dsize);
10660 dev_sectors = dsize / 512;
10661 if (dev_sectors < min_dev_sectors)
10662 min_dev_sectors = dev_sectors;
10663 close(fd);
10664 }
10665 migr_rec->ckpt_area_pba = __cpu_to_le32(min_dev_sectors -
10666 RAID_DISK_RESERVED_BLOCKS_IMSM_HI);
10667
10668 write_imsm_migr_rec(st);
10669
10670 return;
10671}
10672
10673/*******************************************************************************
10674 * Function: save_backup_imsm
10675 * Description: Function saves critical data stripes to Migration Copy Area
10676 * and updates the current migration unit status.
10677 * Use restore_stripes() to form a destination stripe,
10678 * and to write it to the Copy Area.
10679 * Parameters:
10680 * st : supertype information
aea93171 10681 * dev : imsm device that backup is saved for
687629c2
AK		 10682 * info : general array info
10683 * buf : input buffer
687629c2
AK		 10684 * length : length of data to backup (blocks_per_unit)
10685 * Returns:
10686 * 0 : success
10687 *, -1 : fail
10688 ******************************************************************************/
10689int save_backup_imsm(struct supertype *st,
10690 struct imsm_dev *dev,
10691 struct mdinfo *info,
10692 void *buf,
687629c2
AK		 10693 int length)
10694{
10695 int rv = -1;
10696 struct intel_super *super = st->sb;
594dc1b8
JS		 10697 unsigned long long *target_offsets;
10698 int *targets;
687629c2 10699 int i;
238c0a71 10700 struct imsm_map *map_dest = get_imsm_map(dev, MAP_0);
687629c2 10701 int new_disks = map_dest->num_members;
ab724b98
AK		 10702 int dest_layout = 0;
10703 int dest_chunk;
d1877f69 10704 unsigned long long start;
9529d343 10705 int data_disks = imsm_num_data_members(map_dest);
687629c2 10706
503975b9 10707 targets = xmalloc(new_disks * sizeof(int));
687629c2 10708
7e45b550
AK		 10709 for (i = 0; i < new_disks; i++)
10710 targets[i] = -1;
10711
503975b9 10712 target_offsets = xcalloc(new_disks, sizeof(unsigned long long));
687629c2 10713
d1877f69 10714 start = info->reshape_progress * 512;
687629c2 10715 for (i = 0; i < new_disks; i++) {
687629c2
AK		 10716 target_offsets[i] = (unsigned long long)
10717 __le32_to_cpu(super->migr_rec->ckpt_area_pba) * 512;
d1877f69
AK		 10718 /* move back copy area adderss, it will be moved forward
10719 * in restore_stripes() using start input variable
10720 */
10721 target_offsets[i] -= start/data_disks;
687629c2
AK		 10722 }
10723
9a717282
AK		 10724 if (open_backup_targets(info, new_disks, targets,
10725 super, dev))
687629c2
AK		 10726 goto abort;
10727
68eb8bc6 10728 dest_layout = imsm_level_to_layout(map_dest->raid_level);
ab724b98
AK		 10729 dest_chunk = __le16_to_cpu(map_dest->blocks_per_strip) * 512;
10730
687629c2
AK		 10731 if (restore_stripes(targets, /* list of dest devices */
10732 target_offsets, /* migration record offsets */
10733 new_disks,
ab724b98
AK		 10734 dest_chunk,
10735 map_dest->raid_level,
10736 dest_layout,
10737 -1, /* source backup file descriptor */
10738 0, /* input buf offset
10739 * always 0 buf is already offseted */
d1877f69 10740 start,
687629c2
AK		 10741 length,
10742 buf) != 0) {
e7b84f9d 10743 pr_err("Error restoring stripes\n");
687629c2
AK		 10744 goto abort;
10745 }
10746
10747 rv = 0;
10748
10749abort:
10750 if (targets) {
9a717282 10751 close_targets(targets, new_disks);
687629c2
AK		 10752 free(targets);
10753 }
10754 free(target_offsets);
10755
10756 return rv;
10757}
10758
10759/*******************************************************************************
10760 * Function: save_checkpoint_imsm
10761 * Description: Function called for current unit status update
10762 * in the migration record. It writes it to disk.
10763 * Parameters:
10764 * super : imsm internal array info
10765 * info : general array info
10766 * Returns:
10767 * 0: success
10768 * 1: failure
0228d92c
AK		 10769 * 2: failure, means no valid migration record
10770 * / no general migration in progress /
687629c2
AK		 10771 ******************************************************************************/
10772int save_checkpoint_imsm(struct supertype *st, struct mdinfo *info, int state)
10773{
10774 struct intel_super *super = st->sb;
f8b72ef5
AK		 10775 unsigned long long blocks_per_unit;
10776 unsigned long long curr_migr_unit;
10777
2e062e82 10778 if (load_imsm_migr_rec(super, info) != 0) {
7a862a02 10779 dprintf("imsm: ERROR: Cannot read migration record for checkpoint save.\n");
2e062e82
AK		 10780 return 1;
10781 }
10782
f8b72ef5
AK		 10783 blocks_per_unit = __le32_to_cpu(super->migr_rec->blocks_per_unit);
10784 if (blocks_per_unit == 0) {
0228d92c
AK		 10785 dprintf("imsm: no migration in progress.\n");
10786 return 2;
687629c2 10787 }
f8b72ef5
AK		 10788 curr_migr_unit = info->reshape_progress / blocks_per_unit;
10789 /* check if array is alligned to copy area
10790 * if it is not alligned, add one to current migration unit value
10791 * this can happend on array reshape finish only
10792 */
10793 if (info->reshape_progress % blocks_per_unit)
10794 curr_migr_unit++;
687629c2
AK		 10795
10796 super->migr_rec->curr_migr_unit =
f8b72ef5 10797 __cpu_to_le32(curr_migr_unit);
687629c2
AK		 10798 super->migr_rec->rec_status = __cpu_to_le32(state);
10799 super->migr_rec->dest_1st_member_lba =
f8b72ef5
AK		 10800 __cpu_to_le32(curr_migr_unit *
10801 __le32_to_cpu(super->migr_rec->dest_depth_per_unit));
687629c2 10802 if (write_imsm_migr_rec(st) < 0) {
7a862a02 10803 dprintf("imsm: Cannot write migration record outside backup area\n");
687629c2
AK		 10804 return 1;
10805 }
10806
10807 return 0;
10808}
10809
276d77db
AK		 10810/*******************************************************************************
10811 * Function: recover_backup_imsm
10812 * Description: Function recovers critical data from the Migration Copy Area
10813 * while assembling an array.
10814 * Parameters:
10815 * super : imsm internal array info
10816 * info : general array info
10817 * Returns:
10818 * 0 : success (or there is no data to recover)
10819 * 1 : fail
10820 ******************************************************************************/
10821int recover_backup_imsm(struct supertype *st, struct mdinfo *info)
10822{
10823 struct intel_super *super = st->sb;
10824 struct migr_record *migr_rec = super->migr_rec;
594dc1b8 10825 struct imsm_map *map_dest;
276d77db
AK		 10826 struct intel_dev *id = NULL;
10827 unsigned long long read_offset;
10828 unsigned long long write_offset;
10829 unsigned unit_len;
10830 int *targets = NULL;
10831 int new_disks, i, err;
10832 char *buf = NULL;
10833 int retval = 1;
f36a9ecd 10834 unsigned int sector_size = super->sector_size;
276d77db
AK		 10835 unsigned long curr_migr_unit = __le32_to_cpu(migr_rec->curr_migr_unit);
10836 unsigned long num_migr_units = __le32_to_cpu(migr_rec->num_migr_units);
276d77db 10837 char buffer[20];
6c3560c0 10838 int skipped_disks = 0;
276d77db
AK		 10839
10840 err = sysfs_get_str(info, NULL, "array_state", (char *)buffer, 20);
10841 if (err < 1)
10842 return 1;
10843
10844 /* recover data only during assemblation */
10845 if (strncmp(buffer, "inactive", 8) != 0)
10846 return 0;
10847 /* no data to recover */
10848 if (__le32_to_cpu(migr_rec->rec_status) == UNIT_SRC_NORMAL)
10849 return 0;
10850 if (curr_migr_unit >= num_migr_units)
10851 return 1;
10852
10853 /* find device during reshape */
10854 for (id = super->devlist; id; id = id->next)
10855 if (is_gen_migration(id->dev))
10856 break;
10857 if (id == NULL)
10858 return 1;
10859
238c0a71 10860 map_dest = get_imsm_map(id->dev, MAP_0);
276d77db
AK		 10861 new_disks = map_dest->num_members;
10862
10863 read_offset = (unsigned long long)
10864 __le32_to_cpu(migr_rec->ckpt_area_pba) * 512;
10865
10866 write_offset = ((unsigned long long)
10867 __le32_to_cpu(migr_rec->dest_1st_member_lba) +
5551b113 10868 pba_of_lba0(map_dest)) * 512;
276d77db
AK		 10869
10870 unit_len = __le32_to_cpu(migr_rec->dest_depth_per_unit) * 512;
f36a9ecd 10871 if (posix_memalign((void **)&buf, sector_size, unit_len) != 0)
276d77db 10872 goto abort;
503975b9 10873 targets = xcalloc(new_disks, sizeof(int));
276d77db 10874
9a717282 10875 if (open_backup_targets(info, new_disks, targets, super, id->dev)) {
e7b84f9d 10876 pr_err("Cannot open some devices belonging to array.\n");
f627f5ad
AK		 10877 goto abort;
10878 }
276d77db
AK		 10879
10880 for (i = 0; i < new_disks; i++) {
6c3560c0
AK		 10881 if (targets[i] < 0) {
10882 skipped_disks++;
10883 continue;
10884 }
276d77db 10885 if (lseek64(targets[i], read_offset, SEEK_SET) < 0) {
e7b84f9d
N		 10886 pr_err("Cannot seek to block: %s\n",
10887 strerror(errno));
137debce
AK		 10888 skipped_disks++;
10889 continue;
276d77db 10890 }
9ec11d1a 10891 if ((unsigned)read(targets[i], buf, unit_len) != unit_len) {
e7b84f9d
N		 10892 pr_err("Cannot read copy area block: %s\n",
10893 strerror(errno));
137debce
AK		 10894 skipped_disks++;
10895 continue;
276d77db
AK		 10896 }
10897 if (lseek64(targets[i], write_offset, SEEK_SET) < 0) {
e7b84f9d
N		 10898 pr_err("Cannot seek to block: %s\n",
10899 strerror(errno));
137debce
AK		 10900 skipped_disks++;
10901 continue;
276d77db 10902 }
9ec11d1a 10903 if ((unsigned)write(targets[i], buf, unit_len) != unit_len) {
e7b84f9d
N		 10904 pr_err("Cannot restore block: %s\n",
10905 strerror(errno));
137debce
AK		 10906 skipped_disks++;
10907 continue;
276d77db
AK		 10908 }
10909 }
10910
137debce
AK		 10911 if (skipped_disks > imsm_get_allowed_degradation(info->new_level,
10912 new_disks,
10913 super,
10914 id->dev)) {
7a862a02 10915 pr_err("Cannot restore data from backup. Too many failed disks\n");
6c3560c0
AK		 10916 goto abort;
10917 }
10918
befb629b
AK		 10919 if (save_checkpoint_imsm(st, info, UNIT_SRC_NORMAL)) {
10920 /* ignore error == 2, this can mean end of reshape here
10921 */
7a862a02 10922 dprintf("imsm: Cannot write checkpoint to migration record (UNIT_SRC_NORMAL) during restart\n");
befb629b 10923 } else
276d77db 10924 retval = 0;
276d77db
AK		 10925
10926abort:
10927 if (targets) {
10928 for (i = 0; i < new_disks; i++)
10929 if (targets[i])
10930 close(targets[i]);
10931 free(targets);
10932 }
10933 free(buf);
10934 return retval;
10935}
10936
2cda7640
ML		 10937static char disk_by_path[] = "/dev/disk/by-path/";
10938
10939static const char *imsm_get_disk_controller_domain(const char *path)
10940{
2cda7640 10941 char disk_path[PATH_MAX];
96234762
LM		 10942 char *drv=NULL;
10943 struct stat st;
2cda7640 10944
6d8d290a 10945 strcpy(disk_path, disk_by_path);
96234762
LM		 10946 strncat(disk_path, path, PATH_MAX - strlen(disk_path) - 1);
10947 if (stat(disk_path, &st) == 0) {
10948 struct sys_dev* hba;
594dc1b8 10949 char *path;
96234762
LM		 10950
10951 path = devt_to_devpath(st.st_rdev);
10952 if (path == NULL)
10953 return "unknown";
10954 hba = find_disk_attached_hba(-1, path);
10955 if (hba && hba->type == SYS_DEV_SAS)
10956 drv = "isci";
10957 else if (hba && hba->type == SYS_DEV_SATA)
10958 drv = "ahci";
c6839718
MT		 10959 else if (hba && hba->type == SYS_DEV_VMD)
10960 drv = "vmd";
10961 else if (hba && hba->type == SYS_DEV_NVME)
10962 drv = "nvme";
1011e834 10963 else
96234762
LM		 10964 drv = "unknown";
10965 dprintf("path: %s hba: %s attached: %s\n",
10966 path, (hba) ? hba->path : "NULL", drv);
10967 free(path);
2cda7640 10968 }
96234762 10969 return drv;
2cda7640
ML		 10970}
10971
4dd2df09 10972static char *imsm_find_array_devnm_by_subdev(int subdev, char *container)
78b10e66 10973{
4dd2df09 10974 static char devnm[32];
78b10e66
N		 10975 char subdev_name[20];
10976 struct mdstat_ent *mdstat;
10977
10978 sprintf(subdev_name, "%d", subdev);
10979 mdstat = mdstat_by_subdev(subdev_name, container);
10980 if (!mdstat)
4dd2df09 10981 return NULL;
78b10e66 10982
4dd2df09 10983 strcpy(devnm, mdstat->devnm);
78b10e66 10984 free_mdstat(mdstat);
4dd2df09 10985 return devnm;
78b10e66
N		 10986}
10987
10988static int imsm_reshape_is_allowed_on_container(struct supertype *st,
10989 struct geo_params *geo,
fbf3d202
AK		 10990 int *old_raid_disks,
10991 int direction)
78b10e66 10992{
694575e7
KW		 10993 /* currently we only support increasing the number of devices
10994 * for a container. This increases the number of device for each
10995 * member array. They must all be RAID0 or RAID5.
10996 */
78b10e66
N		 10997 int ret_val = 0;
10998 struct mdinfo *info, *member;
10999 int devices_that_can_grow = 0;
11000
7a862a02 11001 dprintf("imsm: imsm_reshape_is_allowed_on_container(ENTER): st->devnm = (%s)\n", st->devnm);
78b10e66 11002
d04f65f4 11003 if (geo->size > 0 ||
78b10e66
N		 11004 geo->level != UnSet ||
11005 geo->layout != UnSet ||
11006 geo->chunksize != 0 ||
11007 geo->raid_disks == UnSet) {
7a862a02 11008 dprintf("imsm: Container operation is allowed for raid disks number change only.\n");
78b10e66
N		 11009 return ret_val;
11010 }
11011
fbf3d202 11012 if (direction == ROLLBACK_METADATA_CHANGES) {
7a862a02 11013 dprintf("imsm: Metadata changes rollback is not supported for container operation.\n");
fbf3d202
AK		 11014 return ret_val;
11015 }
11016
78b10e66
N		 11017 info = container_content_imsm(st, NULL);
11018 for (member = info; member; member = member->next) {
4dd2df09 11019 char *result;
78b10e66
N		 11020
11021 dprintf("imsm: checking device_num: %i\n",
11022 member->container_member);
11023
d7d205bd 11024 if (geo->raid_disks <= member->array.raid_disks) {
78b10e66
N		 11025 /* we work on container for Online Capacity Expansion
11026 * only so raid_disks has to grow
11027 */
7a862a02 11028 dprintf("imsm: for container operation raid disks increase is required\n");
78b10e66
N		 11029 break;
11030 }
11031
089f9d79 11032 if (info->array.level != 0 && info->array.level != 5) {
78b10e66
N		 11033 /* we cannot use this container with other raid level
11034 */
7a862a02 11035 dprintf("imsm: for container operation wrong raid level (%i) detected\n",
78b10e66
N		 11036 info->array.level);
11037 break;
11038 } else {
11039 /* check for platform support
11040 * for this raid level configuration
11041 */
11042 struct intel_super *super = st->sb;
11043 if (!is_raid_level_supported(super->orom,
11044 member->array.level,
11045 geo->raid_disks)) {
7a862a02 11046 dprintf("platform does not support raid%d with %d disk%s\n",
78b10e66
N		 11047 info->array.level,
11048 geo->raid_disks,
11049 geo->raid_disks > 1 ? "s" : "");
11050 break;
11051 }
2a4a08e7
AK		 11052 /* check if component size is aligned to chunk size
11053 */
11054 if (info->component_size %
11055 (info->array.chunk_size/512)) {
7a862a02 11056 dprintf("Component size is not aligned to chunk size\n");
2a4a08e7
AK		 11057 break;
11058 }
78b10e66
N		 11059 }
11060
11061 if (*old_raid_disks &&
11062 info->array.raid_disks != *old_raid_disks)
11063 break;
11064 *old_raid_disks = info->array.raid_disks;
11065
11066 /* All raid5 and raid0 volumes in container
11067 * have to be ready for Online Capacity Expansion
11068 * so they need to be assembled. We have already
11069 * checked that no recovery etc is happening.
11070 */
4dd2df09
N		 11071 result = imsm_find_array_devnm_by_subdev(member->container_member,
11072 st->container_devnm);
11073 if (result == NULL) {
78b10e66
N		 11074 dprintf("imsm: cannot find array\n");
11075 break;
11076 }
11077 devices_that_can_grow++;
11078 }
11079 sysfs_free(info);
11080 if (!member && devices_that_can_grow)
11081 ret_val = 1;
11082
11083 if (ret_val)
1ade5cc1 11084 dprintf("Container operation allowed\n");
78b10e66 11085 else
1ade5cc1 11086 dprintf("Error: %i\n", ret_val);
78b10e66
N		 11087
11088 return ret_val;
11089}
11090
11091/* Function: get_spares_for_grow
11092 * Description: Allocates memory and creates list of spare devices
1011e834 11093 * avaliable in container. Checks if spare drive size is acceptable.
78b10e66
N		 11094 * Parameters: Pointer to the supertype structure
11095 * Returns: Pointer to the list of spare devices (mdinfo structure) on success,
1011e834 11096 * NULL if fail
78b10e66
N		 11097 */
11098static struct mdinfo *get_spares_for_grow(struct supertype *st)
11099{
fbfdcb06
AO		 11100 struct spare_criteria sc;
11101
11102 get_spare_criteria_imsm(st, &sc);
11103 return container_choose_spares(st, &sc, NULL, NULL, NULL, 0);
78b10e66
N		 11104}
11105
11106/******************************************************************************
11107 * function: imsm_create_metadata_update_for_reshape
11108 * Function creates update for whole IMSM container.
11109 *
11110 ******************************************************************************/
11111static int imsm_create_metadata_update_for_reshape(
11112 struct supertype *st,
11113 struct geo_params *geo,
11114 int old_raid_disks,
11115 struct imsm_update_reshape **updatep)
11116{
11117 struct intel_super *super = st->sb;
11118 struct imsm_super *mpb = super->anchor;
594dc1b8
JS		 11119 int update_memory_size;
11120 struct imsm_update_reshape *u;
11121 struct mdinfo *spares;
78b10e66 11122 int i;
594dc1b8 11123 int delta_disks;
bbd24d86 11124 struct mdinfo *dev;
78b10e66 11125
1ade5cc1 11126 dprintf("(enter) raid_disks = %i\n", geo->raid_disks);
78b10e66
N		 11127
11128 delta_disks = geo->raid_disks - old_raid_disks;
11129
11130 /* size of all update data without anchor */
11131 update_memory_size = sizeof(struct imsm_update_reshape);
11132
11133 /* now add space for spare disks that we need to add. */
11134 update_memory_size += sizeof(u->new_disks[0]) * (delta_disks - 1);
11135
503975b9 11136 u = xcalloc(1, update_memory_size);
78b10e66
N		 11137 u->type = update_reshape_container_disks;
11138 u->old_raid_disks = old_raid_disks;
11139 u->new_raid_disks = geo->raid_disks;
11140
11141 /* now get spare disks list
11142 */
11143 spares = get_spares_for_grow(st);
11144
d7be7d87 11145 if (spares == NULL || delta_disks > spares->array.spare_disks) {
7a862a02 11146 pr_err("imsm: ERROR: Cannot get spare devices for %s.\n", geo->dev_name);
e4c72d1d 11147 i = -1;
78b10e66
N		 11148 goto abort;
11149 }
11150
11151 /* we have got spares
11152 * update disk list in imsm_disk list table in anchor
11153 */
11154 dprintf("imsm: %i spares are available.\n\n",
11155 spares->array.spare_disks);
11156
bbd24d86 11157 dev = spares->devs;
78b10e66 11158 for (i = 0; i < delta_disks; i++) {
78b10e66
N		 11159 struct dl *dl;
11160
bbd24d86
AK		 11161 if (dev == NULL)
11162 break;
78b10e66
N		 11163 u->new_disks[i] = makedev(dev->disk.major,
11164 dev->disk.minor);
11165 dl = get_disk_super(super, dev->disk.major, dev->disk.minor);
ee4beede
AK		 11166 dl->index = mpb->num_disks;
11167 mpb->num_disks++;
bbd24d86 11168 dev = dev->next;
78b10e66 11169 }
78b10e66
N		 11170
11171abort:
11172 /* free spares
11173 */
11174 sysfs_free(spares);
11175
d677e0b8 11176 dprintf("imsm: reshape update preparation :");
78b10e66 11177 if (i == delta_disks) {
1ade5cc1 11178 dprintf_cont(" OK\n");
78b10e66
N		 11179 *updatep = u;
11180 return update_memory_size;
11181 }
11182 free(u);
1ade5cc1 11183 dprintf_cont(" Error\n");
78b10e66
N		 11184
11185 return 0;
11186}
11187
f3871fdc
AK		 11188/******************************************************************************
11189 * function: imsm_create_metadata_update_for_size_change()
11190 * Creates update for IMSM array for array size change.
11191 *
11192 ******************************************************************************/
11193static int imsm_create_metadata_update_for_size_change(
11194 struct supertype *st,
11195 struct geo_params *geo,
11196 struct imsm_update_size_change **updatep)
11197{
11198 struct intel_super *super = st->sb;
594dc1b8
JS		 11199 int update_memory_size;
11200 struct imsm_update_size_change *u;
f3871fdc 11201
1ade5cc1 11202 dprintf("(enter) New size = %llu\n", geo->size);
f3871fdc
AK		 11203
11204 /* size of all update data without anchor */
11205 update_memory_size = sizeof(struct imsm_update_size_change);
11206
503975b9 11207 u = xcalloc(1, update_memory_size);
f3871fdc
AK		 11208 u->type = update_size_change;
11209 u->subdev = super->current_vol;
11210 u->new_size = geo->size;
11211
11212 dprintf("imsm: reshape update preparation : OK\n");
11213 *updatep = u;
11214
11215 return update_memory_size;
11216}
11217
48c5303a
PC		 11218/******************************************************************************
11219 * function: imsm_create_metadata_update_for_migration()
11220 * Creates update for IMSM array.
11221 *
11222 ******************************************************************************/
11223static int imsm_create_metadata_update_for_migration(
11224 struct supertype *st,
11225 struct geo_params *geo,
11226 struct imsm_update_reshape_migration **updatep)
11227{
11228 struct intel_super *super = st->sb;
594dc1b8
JS		 11229 int update_memory_size;
11230 struct imsm_update_reshape_migration *u;
48c5303a
PC		 11231 struct imsm_dev *dev;
11232 int previous_level = -1;
11233
1ade5cc1 11234 dprintf("(enter) New Level = %i\n", geo->level);
48c5303a
PC		 11235
11236 /* size of all update data without anchor */
11237 update_memory_size = sizeof(struct imsm_update_reshape_migration);
11238
503975b9 11239 u = xcalloc(1, update_memory_size);
48c5303a
PC		 11240 u->type = update_reshape_migration;
11241 u->subdev = super->current_vol;
11242 u->new_level = geo->level;
11243 u->new_layout = geo->layout;
11244 u->new_raid_disks = u->old_raid_disks = geo->raid_disks;
11245 u->new_disks[0] = -1;
4bba0439 11246 u->new_chunksize = -1;
48c5303a
PC		 11247
11248 dev = get_imsm_dev(super, u->subdev);
11249 if (dev) {
11250 struct imsm_map *map;
11251
238c0a71 11252 map = get_imsm_map(dev, MAP_0);
4bba0439
PC		 11253 if (map) {
11254 int current_chunk_size =
11255 __le16_to_cpu(map->blocks_per_strip) / 2;
11256
11257 if (geo->chunksize != current_chunk_size) {
11258 u->new_chunksize = geo->chunksize / 1024;
7a862a02 11259 dprintf("imsm: chunk size change from %i to %i\n",
4bba0439
PC		 11260 current_chunk_size, u->new_chunksize);
11261 }
48c5303a 11262 previous_level = map->raid_level;
4bba0439 11263 }
48c5303a 11264 }
089f9d79 11265 if (geo->level == 5 && previous_level == 0) {
48c5303a
PC		 11266 struct mdinfo *spares = NULL;
11267
11268 u->new_raid_disks++;
11269 spares = get_spares_for_grow(st);
089f9d79 11270 if (spares == NULL || spares->array.spare_disks < 1) {
48c5303a
PC		 11271 free(u);
11272 sysfs_free(spares);
11273 update_memory_size = 0;
565cc99e 11274 pr_err("cannot get spare device for requested migration\n");
48c5303a
PC		 11275 return 0;
11276 }
11277 sysfs_free(spares);
11278 }
11279 dprintf("imsm: reshape update preparation : OK\n");
11280 *updatep = u;
11281
11282 return update_memory_size;
11283}
11284
8dd70bce
AK		 11285static void imsm_update_metadata_locally(struct supertype *st,
11286 void *buf, int len)
11287{
11288 struct metadata_update mu;
11289
11290 mu.buf = buf;
11291 mu.len = len;
11292 mu.space = NULL;
11293 mu.space_list = NULL;
11294 mu.next = NULL;
5fe6f031
N		 11295 if (imsm_prepare_update(st, &mu))
11296 imsm_process_update(st, &mu);
8dd70bce
AK		 11297
11298 while (mu.space_list) {
11299 void **space = mu.space_list;
11300 mu.space_list = *space;
11301 free(space);
11302 }
11303}
78b10e66 11304
471bceb6 11305/***************************************************************************
694575e7 11306* Function: imsm_analyze_change
471bceb6 11307* Description: Function analyze change for single volume
1011e834 11308* and validate if transition is supported
fbf3d202
AK		 11309* Parameters: Geometry parameters, supertype structure,
11310* metadata change direction (apply/rollback)
694575e7 11311* Returns: Operation type code on success, -1 if fail
471bceb6
KW		 11312****************************************************************************/
11313enum imsm_reshape_type imsm_analyze_change(struct supertype *st,
fbf3d202
AK		 11314 struct geo_params *geo,
11315 int direction)
694575e7 11316{
471bceb6
KW		 11317 struct mdinfo info;
11318 int change = -1;
11319 int check_devs = 0;
c21e737b 11320 int chunk;
67a2db32
AK		 11321 /* number of added/removed disks in operation result */
11322 int devNumChange = 0;
11323 /* imsm compatible layout value for array geometry verification */
11324 int imsm_layout = -1;
7abc9871
AK		 11325 int data_disks;
11326 struct imsm_dev *dev;
9529d343 11327 struct imsm_map *map;
7abc9871 11328 struct intel_super *super;
d04f65f4 11329 unsigned long long current_size;
65d38cca 11330 unsigned long long free_size;
d04f65f4 11331 unsigned long long max_size;
65d38cca 11332 int rv;
471bceb6
KW		 11333
11334 getinfo_super_imsm_volume(st, &info, NULL);
089f9d79
JS		 11335 if (geo->level != info.array.level && geo->level >= 0 &&
11336 geo->level != UnSet) {
471bceb6
KW		 11337 switch (info.array.level) {
11338 case 0:
11339 if (geo->level == 5) {
b5347799 11340 change = CH_MIGRATION;
e13ce846 11341 if (geo->layout != ALGORITHM_LEFT_ASYMMETRIC) {
7a862a02 11342 pr_err("Error. Requested Layout not supported (left-asymmetric layout is supported only)!\n");
e13ce846
AK		 11343 change = -1;
11344 goto analyse_change_exit;
11345 }
67a2db32 11346 imsm_layout = geo->layout;
471bceb6 11347 check_devs = 1;
e91a3bad
LM		 11348 devNumChange = 1; /* parity disk added */
11349 } else if (geo->level == 10) {
471bceb6
KW		 11350 change = CH_TAKEOVER;
11351 check_devs = 1;
e91a3bad 11352 devNumChange = 2; /* two mirrors added */
67a2db32 11353 imsm_layout = 0x102; /* imsm supported layout */
471bceb6 11354 }
dfe77a9e
KW		 11355 break;
11356 case 1:
471bceb6
KW		 11357 case 10:
11358 if (geo->level == 0) {
11359 change = CH_TAKEOVER;
11360 check_devs = 1;
e91a3bad 11361 devNumChange = -(geo->raid_disks/2);
67a2db32 11362 imsm_layout = 0; /* imsm raid0 layout */
471bceb6
KW		 11363 }
11364 break;
11365 }
11366 if (change == -1) {
7a862a02 11367 pr_err("Error. Level Migration from %d to %d not supported!\n",
e7b84f9d 11368 info.array.level, geo->level);
471bceb6
KW		 11369 goto analyse_change_exit;
11370 }
11371 } else
11372 geo->level = info.array.level;
11373
089f9d79
JS		 11374 if (geo->layout != info.array.layout &&
11375 (geo->layout != UnSet && geo->layout != -1)) {
b5347799 11376 change = CH_MIGRATION;
089f9d79
JS		 11377 if (info.array.layout == 0 && info.array.level == 5 &&
11378 geo->layout == 5) {
471bceb6 11379 /* reshape 5 -> 4 */
089f9d79
JS		 11380 } else if (info.array.layout == 5 && info.array.level == 5 &&
11381 geo->layout == 0) {
471bceb6
KW		 11382 /* reshape 4 -> 5 */
11383 geo->layout = 0;
11384 geo->level = 5;
11385 } else {
7a862a02 11386 pr_err("Error. Layout Migration from %d to %d not supported!\n",
e7b84f9d 11387 info.array.layout, geo->layout);
471bceb6
KW		 11388 change = -1;
11389 goto analyse_change_exit;
11390 }
67a2db32 11391 } else {
471bceb6 11392 geo->layout = info.array.layout;
67a2db32
AK		 11393 if (imsm_layout == -1)
11394 imsm_layout = info.array.layout;
11395 }
471bceb6 11396
089f9d79
JS		 11397 if (geo->chunksize > 0 && geo->chunksize != UnSet &&
11398 geo->chunksize != info.array.chunk_size) {
2d2b0eb7
MD		 11399 if (info.array.level == 10) {
11400 pr_err("Error. Chunk size change for RAID 10 is not supported.\n");
11401 change = -1;
11402 goto analyse_change_exit;
1e9b2c3f
PB		 11403 } else if (info.component_size % (geo->chunksize/512)) {
11404 pr_err("New chunk size (%dK) does not evenly divide device size (%lluk). Aborting...\n",
11405 geo->chunksize/1024, info.component_size/2);
11406 change = -1;
11407 goto analyse_change_exit;
2d2b0eb7 11408 }
b5347799 11409 change = CH_MIGRATION;
2d2b0eb7 11410 } else {
471bceb6 11411 geo->chunksize = info.array.chunk_size;
2d2b0eb7 11412 }
471bceb6 11413
c21e737b 11414 chunk = geo->chunksize / 1024;
7abc9871
AK		 11415
11416 super = st->sb;
11417 dev = get_imsm_dev(super, super->current_vol);
9529d343
MD		 11418 map = get_imsm_map(dev, MAP_0);
11419 data_disks = imsm_num_data_members(map);
c41e00b2 11420 /* compute current size per disk member
7abc9871 11421 */
c41e00b2
AK		 11422 current_size = info.custom_array_size / data_disks;
11423
089f9d79 11424 if (geo->size > 0 && geo->size != MAX_SIZE) {
c41e00b2
AK		 11425 /* align component size
11426 */
11427 geo->size = imsm_component_size_aligment_check(
11428 get_imsm_raid_level(dev->vol.map),
f36a9ecd 11429 chunk * 1024, super->sector_size,
c41e00b2 11430 geo->size * 2);
65d0b4ce 11431 if (geo->size == 0) {
7a862a02 11432 pr_err("Error. Size expansion is supported only (current size is %llu, requested size /rounded/ is 0).\n",
65d0b4ce
LD		 11433 current_size);
11434 goto analyse_change_exit;
11435 }
c41e00b2 11436 }
7abc9871 11437
089f9d79 11438 if (current_size != geo->size && geo->size > 0) {
7abc9871 11439 if (change != -1) {
7a862a02 11440 pr_err("Error. Size change should be the only one at a time.\n");
7abc9871
AK		 11441 change = -1;
11442 goto analyse_change_exit;
11443 }
11444 if ((super->current_vol + 1) != super->anchor->num_raid_devs) {
7a862a02 11445 pr_err("Error. The last volume in container can be expanded only (%i/%s).\n",
4dd2df09 11446 super->current_vol, st->devnm);
7abc9871
AK		 11447 goto analyse_change_exit;
11448 }
65d38cca
LD		 11449 /* check the maximum available size
11450 */
11451 rv = imsm_get_free_size(st, dev->vol.map->num_members,
11452 0, chunk, &free_size);
11453 if (rv == 0)
11454 /* Cannot find maximum available space
11455 */
11456 max_size = 0;
11457 else {
11458 max_size = free_size + current_size;
11459 /* align component size
11460 */
11461 max_size = imsm_component_size_aligment_check(
11462 get_imsm_raid_level(dev->vol.map),
f36a9ecd 11463 chunk * 1024, super->sector_size,
65d38cca
LD		 11464 max_size);
11465 }
d04f65f4 11466 if (geo->size == MAX_SIZE) {
b130333f
AK		 11467 /* requested size change to the maximum available size
11468 */
65d38cca 11469 if (max_size == 0) {
7a862a02 11470 pr_err("Error. Cannot find maximum available space.\n");
b130333f
AK		 11471 change = -1;
11472 goto analyse_change_exit;
65d38cca
LD		 11473 } else
11474 geo->size = max_size;
c41e00b2 11475 }
b130333f 11476
681b7ae2 11477 if (direction == ROLLBACK_METADATA_CHANGES) {
fbf3d202
AK		 11478 /* accept size for rollback only
11479 */
11480 } else {
11481 /* round size due to metadata compatibility
11482 */
11483 geo->size = (geo->size >> SECT_PER_MB_SHIFT)
11484 << SECT_PER_MB_SHIFT;
11485 dprintf("Prepare update for size change to %llu\n",
11486 geo->size );
11487 if (current_size >= geo->size) {
7a862a02 11488 pr_err("Error. Size expansion is supported only (current size is %llu, requested size /rounded/ is %llu).\n",
e7b84f9d 11489 current_size, geo->size);
fbf3d202
AK		 11490 goto analyse_change_exit;
11491 }
65d38cca 11492 if (max_size && geo->size > max_size) {
7a862a02 11493 pr_err("Error. Requested size is larger than maximum available size (maximum available size is %llu, requested size /rounded/ is %llu).\n",
e7b84f9d 11494 max_size, geo->size);
65d38cca
LD		 11495 goto analyse_change_exit;
11496 }
7abc9871
AK		 11497 }
11498 geo->size *= data_disks;
11499 geo->raid_disks = dev->vol.map->num_members;
11500 change = CH_ARRAY_SIZE;
11501 }
471bceb6
KW		 11502 if (!validate_geometry_imsm(st,
11503 geo->level,
67a2db32 11504 imsm_layout,
e91a3bad 11505 geo->raid_disks + devNumChange,
c21e737b 11506 &chunk,
af4348dd 11507 geo->size, INVALID_SECTORS,
5308f117 11508 0, 0, info.consistency_policy, 1))
471bceb6
KW		 11509 change = -1;
11510
11511 if (check_devs) {
11512 struct intel_super *super = st->sb;
11513 struct imsm_super *mpb = super->anchor;
11514
11515 if (mpb->num_raid_devs > 1) {
7a862a02 11516 pr_err("Error. Cannot perform operation on %s- for this operation it MUST be single array in container\n",
e7b84f9d 11517 geo->dev_name);
471bceb6
KW		 11518 change = -1;
11519 }
11520 }
11521
11522analyse_change_exit:
089f9d79
JS		 11523 if (direction == ROLLBACK_METADATA_CHANGES &&
11524 (change == CH_MIGRATION || change == CH_TAKEOVER)) {
7a862a02 11525 dprintf("imsm: Metadata changes rollback is not supported for migration and takeover operations.\n");
fbf3d202
AK		 11526 change = -1;
11527 }
471bceb6 11528 return change;
694575e7
KW		 11529}
11530
bb025c2f
KW		 11531int imsm_takeover(struct supertype *st, struct geo_params *geo)
11532{
11533 struct intel_super *super = st->sb;
11534 struct imsm_update_takeover *u;
11535
503975b9 11536 u = xmalloc(sizeof(struct imsm_update_takeover));
bb025c2f
KW		 11537
11538 u->type = update_takeover;
11539 u->subarray = super->current_vol;
11540
11541 /* 10->0 transition */
11542 if (geo->level == 0)
11543 u->direction = R10_TO_R0;
11544
0529c688
KW		 11545 /* 0->10 transition */
11546 if (geo->level == 10)
11547 u->direction = R0_TO_R10;
11548
bb025c2f
KW		 11549 /* update metadata locally */
11550 imsm_update_metadata_locally(st, u,
11551 sizeof(struct imsm_update_takeover));
11552 /* and possibly remotely */
11553 if (st->update_tail)
11554 append_metadata_update(st, u,
11555 sizeof(struct imsm_update_takeover));
11556 else
11557 free(u);
11558
11559 return 0;
11560}
11561
d04f65f4
N		 11562static int imsm_reshape_super(struct supertype *st, unsigned long long size,
11563 int level,
78b10e66 11564 int layout, int chunksize, int raid_disks,
41784c88 11565 int delta_disks, char *backup, char *dev,
016e00f5 11566 int direction, int verbose)
78b10e66 11567{
78b10e66
N		 11568 int ret_val = 1;
11569 struct geo_params geo;
11570
1ade5cc1 11571 dprintf("(enter)\n");
78b10e66 11572
71204a50 11573 memset(&geo, 0, sizeof(struct geo_params));
78b10e66
N		 11574
11575 geo.dev_name = dev;
4dd2df09 11576 strcpy(geo.devnm, st->devnm);
78b10e66
N		 11577 geo.size = size;
11578 geo.level = level;
11579 geo.layout = layout;
11580 geo.chunksize = chunksize;
11581 geo.raid_disks = raid_disks;
41784c88
AK		 11582 if (delta_disks != UnSet)
11583 geo.raid_disks += delta_disks;
78b10e66 11584
1ade5cc1
N		 11585 dprintf("for level : %i\n", geo.level);
11586 dprintf("for raid_disks : %i\n", geo.raid_disks);
78b10e66
N		 11587
11588 if (experimental() == 0)
11589 return ret_val;
11590
4dd2df09 11591 if (strcmp(st->container_devnm, st->devnm) == 0) {
694575e7
KW		 11592 /* On container level we can only increase number of devices. */
11593 dprintf("imsm: info: Container operation\n");
78b10e66 11594 int old_raid_disks = 0;
6dc0be30 11595
78b10e66 11596 if (imsm_reshape_is_allowed_on_container(
fbf3d202 11597 st, &geo, &old_raid_disks, direction)) {
78b10e66
N		 11598 struct imsm_update_reshape *u = NULL;
11599 int len;
11600
11601 len = imsm_create_metadata_update_for_reshape(
11602 st, &geo, old_raid_disks, &u);
11603
ed08d51c
AK		 11604 if (len <= 0) {
11605 dprintf("imsm: Cannot prepare update\n");
11606 goto exit_imsm_reshape_super;
11607 }
11608
8dd70bce
AK		 11609 ret_val = 0;
11610 /* update metadata locally */
11611 imsm_update_metadata_locally(st, u, len);
11612 /* and possibly remotely */
11613 if (st->update_tail)
11614 append_metadata_update(st, u, len);
11615 else
ed08d51c 11616 free(u);
8dd70bce 11617
694575e7 11618 } else {
7a862a02 11619 pr_err("(imsm) Operation is not allowed on this container\n");
694575e7
KW		 11620 }
11621 } else {
11622 /* On volume level we support following operations
471bceb6
KW		 11623 * - takeover: raid10 -> raid0; raid0 -> raid10
11624 * - chunk size migration
11625 * - migration: raid5 -> raid0; raid0 -> raid5
11626 */
11627 struct intel_super *super = st->sb;
11628 struct intel_dev *dev = super->devlist;
4dd2df09 11629 int change;
694575e7 11630 dprintf("imsm: info: Volume operation\n");
471bceb6
KW		 11631 /* find requested device */
11632 while (dev) {
1011e834 11633 char *devnm =
4dd2df09
N		 11634 imsm_find_array_devnm_by_subdev(
11635 dev->index, st->container_devnm);
11636 if (devnm && strcmp(devnm, geo.devnm) == 0)
471bceb6
KW		 11637 break;
11638 dev = dev->next;
11639 }
11640 if (dev == NULL) {
4dd2df09
N		 11641 pr_err("Cannot find %s (%s) subarray\n",
11642 geo.dev_name, geo.devnm);
471bceb6
KW		 11643 goto exit_imsm_reshape_super;
11644 }
11645 super->current_vol = dev->index;
fbf3d202 11646 change = imsm_analyze_change(st, &geo, direction);
694575e7 11647 switch (change) {
471bceb6 11648 case CH_TAKEOVER:
bb025c2f 11649 ret_val = imsm_takeover(st, &geo);
694575e7 11650 break;
48c5303a
PC		 11651 case CH_MIGRATION: {
11652 struct imsm_update_reshape_migration *u = NULL;
11653 int len =
11654 imsm_create_metadata_update_for_migration(
11655 st, &geo, &u);
11656 if (len < 1) {
7a862a02 11657 dprintf("imsm: Cannot prepare update\n");
48c5303a
PC		 11658 break;
11659 }
471bceb6 11660 ret_val = 0;
48c5303a
PC		 11661 /* update metadata locally */
11662 imsm_update_metadata_locally(st, u, len);
11663 /* and possibly remotely */
11664 if (st->update_tail)
11665 append_metadata_update(st, u, len);
11666 else
11667 free(u);
11668 }
11669 break;
7abc9871 11670 case CH_ARRAY_SIZE: {
f3871fdc
AK		 11671 struct imsm_update_size_change *u = NULL;
11672 int len =
11673 imsm_create_metadata_update_for_size_change(
11674 st, &geo, &u);
11675 if (len < 1) {
7a862a02 11676 dprintf("imsm: Cannot prepare update\n");
f3871fdc
AK		 11677 break;
11678 }
11679 ret_val = 0;
11680 /* update metadata locally */
11681 imsm_update_metadata_locally(st, u, len);
11682 /* and possibly remotely */
11683 if (st->update_tail)
11684 append_metadata_update(st, u, len);
11685 else
11686 free(u);
7abc9871
AK		 11687 }
11688 break;
471bceb6
KW		 11689 default:
11690 ret_val = 1;
694575e7 11691 }
694575e7 11692 }
78b10e66 11693
ed08d51c 11694exit_imsm_reshape_super:
78b10e66
N		 11695 dprintf("imsm: reshape_super Exit code = %i\n", ret_val);
11696 return ret_val;
11697}
2cda7640 11698
0febb20c
AO		 11699#define COMPLETED_OK 0
11700#define COMPLETED_NONE 1
11701#define COMPLETED_DELAYED 2
11702
11703static int read_completed(int fd, unsigned long long *val)
11704{
11705 int ret;
11706 char buf[50];
11707
11708 ret = sysfs_fd_get_str(fd, buf, 50);
11709 if (ret < 0)
11710 return ret;
11711
11712 ret = COMPLETED_OK;
11713 if (strncmp(buf, "none", 4) == 0) {
11714 ret = COMPLETED_NONE;
11715 } else if (strncmp(buf, "delayed", 7) == 0) {
11716 ret = COMPLETED_DELAYED;
11717 } else {
11718 char *ep;
11719 *val = strtoull(buf, &ep, 0);
11720 if (ep == buf || (*ep != 0 && *ep != '\n' && *ep != ' '))
11721 ret = -1;
11722 }
11723 return ret;
11724}
11725
eee67a47
AK		 11726/*******************************************************************************
11727 * Function: wait_for_reshape_imsm
11728 * Description: Function writes new sync_max value and waits until
11729 * reshape process reach new position
11730 * Parameters:
11731 * sra : general array info
eee67a47
AK		 11732 * ndata : number of disks in new array's layout
11733 * Returns:
11734 * 0 : success,
11735 * 1 : there is no reshape in progress,
11736 * -1 : fail
11737 ******************************************************************************/
ae9f01f8 11738int wait_for_reshape_imsm(struct mdinfo *sra, int ndata)
eee67a47 11739{
85ca499c 11740 int fd = sysfs_get_fd(sra, NULL, "sync_completed");
df2647fa 11741 int retry = 3;
eee67a47 11742 unsigned long long completed;
ae9f01f8
AK		 11743 /* to_complete : new sync_max position */
11744 unsigned long long to_complete = sra->reshape_progress;
11745 unsigned long long position_to_set = to_complete / ndata;
eee67a47 11746
ae9f01f8 11747 if (fd < 0) {
1ade5cc1 11748 dprintf("cannot open reshape_position\n");
eee67a47 11749 return 1;
ae9f01f8 11750 }
eee67a47 11751
df2647fa
PB		 11752 do {
11753 if (sysfs_fd_get_ll(fd, &completed) < 0) {
11754 if (!retry) {
11755 dprintf("cannot read reshape_position (no reshape in progres)\n");
11756 close(fd);
11757 return 1;
11758 }
11759 usleep(30000);
11760 } else
11761 break;
11762 } while (retry--);
eee67a47 11763
85ca499c 11764 if (completed > position_to_set) {
1ade5cc1 11765 dprintf("wrong next position to set %llu (%llu)\n",
85ca499c 11766 to_complete, position_to_set);
ae9f01f8
AK		 11767 close(fd);
11768 return -1;
11769 }
11770 dprintf("Position set: %llu\n", position_to_set);
11771 if (sysfs_set_num(sra, NULL, "sync_max",
11772 position_to_set) != 0) {
1ade5cc1 11773 dprintf("cannot set reshape position to %llu\n",
ae9f01f8
AK		 11774 position_to_set);
11775 close(fd);
11776 return -1;
eee67a47
AK		 11777 }
11778
eee67a47 11779 do {
0febb20c 11780 int rc;
eee67a47 11781 char action[20];
5ff3a780 11782 int timeout = 3000;
0febb20c 11783
5ff3a780 11784 sysfs_wait(fd, &timeout);
a47e44fb
AK		 11785 if (sysfs_get_str(sra, NULL, "sync_action",
11786 action, 20) > 0 &&
d7d3809a 11787 strncmp(action, "reshape", 7) != 0) {
b2be2b62
AO		 11788 if (strncmp(action, "idle", 4) == 0)
11789 break;
d7d3809a
AP		 11790 close(fd);
11791 return -1;
11792 }
0febb20c
AO		 11793
11794 rc = read_completed(fd, &completed);
11795 if (rc < 0) {
1ade5cc1 11796 dprintf("cannot read reshape_position (in loop)\n");
eee67a47
AK		 11797 close(fd);
11798 return 1;
0febb20c
AO		 11799 } else if (rc == COMPLETED_NONE)
11800 break;
85ca499c 11801 } while (completed < position_to_set);
b2be2b62 11802
eee67a47
AK		 11803 close(fd);
11804 return 0;
eee67a47
AK		 11805}
11806
b915c95f
AK		 11807/*******************************************************************************
11808 * Function: check_degradation_change
11809 * Description: Check that array hasn't become failed.
11810 * Parameters:
11811 * info : for sysfs access
11812 * sources : source disks descriptors
11813 * degraded: previous degradation level
11814 * Returns:
11815 * degradation level
11816 ******************************************************************************/
11817int check_degradation_change(struct mdinfo *info,
11818 int *sources,
11819 int degraded)
11820{
11821 unsigned long long new_degraded;
e1993023
LD		 11822 int rv;
11823
11824 rv = sysfs_get_ll(info, NULL, "degraded", &new_degraded);
089f9d79 11825 if (rv == -1 || (new_degraded != (unsigned long long)degraded)) {
b915c95f
AK		 11826 /* check each device to ensure it is still working */
11827 struct mdinfo *sd;
11828 new_degraded = 0;
11829 for (sd = info->devs ; sd ; sd = sd->next) {
11830 if (sd->disk.state & (1<<MD_DISK_FAULTY))
11831 continue;
11832 if (sd->disk.state & (1<<MD_DISK_SYNC)) {
cf52eff5
TM		 11833 char sbuf[100];
11834
b915c95f 11835 if (sysfs_get_str(info,
cf52eff5 11836 sd, "state", sbuf, sizeof(sbuf)) < 0 ||
b915c95f
AK		 11837 strstr(sbuf, "faulty") ||
11838 strstr(sbuf, "in_sync") == NULL) {
11839 /* this device is dead */
11840 sd->disk.state = (1<<MD_DISK_FAULTY);
11841 if (sd->disk.raid_disk >= 0 &&
11842 sources[sd->disk.raid_disk] >= 0) {
11843 close(sources[
11844 sd->disk.raid_disk]);
11845 sources[sd->disk.raid_disk] =
11846 -1;
11847 }
11848 new_degraded++;
11849 }
11850 }
11851 }
11852 }
11853
11854 return new_degraded;
11855}
11856
10f22854
AK		 11857/*******************************************************************************
11858 * Function: imsm_manage_reshape
11859 * Description: Function finds array under reshape and it manages reshape
11860 * process. It creates stripes backups (if required) and sets
942e1cdb 11861 * checkpoints.
10f22854
AK		 11862 * Parameters:
11863 * afd : Backup handle (nattive) - not used
11864 * sra : general array info
11865 * reshape : reshape parameters - not used
11866 * st : supertype structure
11867 * blocks : size of critical section [blocks]
11868 * fds : table of source device descriptor
11869 * offsets : start of array (offest per devices)
11870 * dests : not used
11871 * destfd : table of destination device descriptor
11872 * destoffsets : table of destination offsets (per device)
11873 * Returns:
11874 * 1 : success, reshape is done
11875 * 0 : fail
11876 ******************************************************************************/
999b4972
N		 11877static int imsm_manage_reshape(
11878 int afd, struct mdinfo *sra, struct reshape *reshape,
10f22854 11879 struct supertype *st, unsigned long backup_blocks,
999b4972
N		 11880 int *fds, unsigned long long *offsets,
11881 int dests, int *destfd, unsigned long long *destoffsets)
11882{
10f22854
AK		 11883 int ret_val = 0;
11884 struct intel_super *super = st->sb;
594dc1b8 11885 struct intel_dev *dv;
de44e46f 11886 unsigned int sector_size = super->sector_size;
10f22854 11887 struct imsm_dev *dev = NULL;
9529d343 11888 struct imsm_map *map_src, *map_dest;
10f22854
AK		 11889 int migr_vol_qan = 0;
11890 int ndata, odata; /* [bytes] */
11891 int chunk; /* [bytes] */
11892 struct migr_record *migr_rec;
11893 char *buf = NULL;
11894 unsigned int buf_size; /* [bytes] */
11895 unsigned long long max_position; /* array size [bytes] */
11896 unsigned long long next_step; /* [blocks]/[bytes] */
11897 unsigned long long old_data_stripe_length;
10f22854
AK		 11898 unsigned long long start_src; /* [bytes] */
11899 unsigned long long start; /* [bytes] */
11900 unsigned long long start_buf_shift; /* [bytes] */
b915c95f 11901 int degraded = 0;
ab724b98 11902 int source_layout = 0;
10f22854 11903
79a16a9b
JS		 11904 if (!sra)
11905 return ret_val;
11906
11907 if (!fds || !offsets)
10f22854
AK		 11908 goto abort;
11909
11910 /* Find volume during the reshape */
11911 for (dv = super->devlist; dv; dv = dv->next) {
fc54fe7a
JS		 11912 if (dv->dev->vol.migr_type == MIGR_GEN_MIGR &&
11913 dv->dev->vol.migr_state == 1) {
10f22854
AK		 11914 dev = dv->dev;
11915 migr_vol_qan++;
11916 }
11917 }
11918 /* Only one volume can migrate at the same time */
11919 if (migr_vol_qan != 1) {
676e87a8 11920 pr_err("%s", migr_vol_qan ?
10f22854
AK		 11921 "Number of migrating volumes greater than 1\n" :
11922 "There is no volume during migrationg\n");
11923 goto abort;
11924 }
11925
9529d343 11926 map_dest = get_imsm_map(dev, MAP_0);
238c0a71 11927 map_src = get_imsm_map(dev, MAP_1);
10f22854
AK		 11928 if (map_src == NULL)
11929 goto abort;
10f22854 11930
9529d343
MD		 11931 ndata = imsm_num_data_members(map_dest);
11932 odata = imsm_num_data_members(map_src);
10f22854 11933
7b1ab482 11934 chunk = __le16_to_cpu(map_src->blocks_per_strip) * 512;
10f22854
AK		 11935 old_data_stripe_length = odata * chunk;
11936
11937 migr_rec = super->migr_rec;
11938
10f22854
AK		 11939 /* initialize migration record for start condition */
11940 if (sra->reshape_progress == 0)
11941 init_migr_record_imsm(st, dev, sra);
b2c59438
AK		 11942 else {
11943 if (__le32_to_cpu(migr_rec->rec_status) != UNIT_SRC_NORMAL) {
7a862a02 11944 dprintf("imsm: cannot restart migration when data are present in copy area.\n");
b2c59438
AK		 11945 goto abort;
11946 }
6a75c8ca
AK		 11947 /* Save checkpoint to update migration record for current
11948 * reshape position (in md). It can be farther than current
11949 * reshape position in metadata.
11950 */
11951 if (save_checkpoint_imsm(st, sra, UNIT_SRC_NORMAL) == 1) {
11952 /* ignore error == 2, this can mean end of reshape here
11953 */
7a862a02 11954 dprintf("imsm: Cannot write checkpoint to migration record (UNIT_SRC_NORMAL, initial save)\n");
6a75c8ca
AK		 11955 goto abort;
11956 }
b2c59438 11957 }
10f22854
AK		 11958
11959 /* size for data */
11960 buf_size = __le32_to_cpu(migr_rec->blocks_per_unit) * 512;
11961 /* extend buffer size for parity disk */
11962 buf_size += __le32_to_cpu(migr_rec->dest_depth_per_unit) * 512;
11963 /* add space for stripe aligment */
11964 buf_size += old_data_stripe_length;
de44e46f
PB		 11965 if (posix_memalign((void **)&buf, MAX_SECTOR_SIZE, buf_size)) {
11966 dprintf("imsm: Cannot allocate checkpoint buffer\n");
10f22854
AK		 11967 goto abort;
11968 }
11969
3ef4403c 11970 max_position = sra->component_size * ndata;
68eb8bc6 11971 source_layout = imsm_level_to_layout(map_src->raid_level);
10f22854
AK		 11972
11973 while (__le32_to_cpu(migr_rec->curr_migr_unit) <
11974 __le32_to_cpu(migr_rec->num_migr_units)) {
11975 /* current reshape position [blocks] */
11976 unsigned long long current_position =
11977 __le32_to_cpu(migr_rec->blocks_per_unit)
11978 * __le32_to_cpu(migr_rec->curr_migr_unit);
11979 unsigned long long border;
11980
b915c95f
AK		 11981 /* Check that array hasn't become failed.
11982 */
11983 degraded = check_degradation_change(sra, fds, degraded);
11984 if (degraded > 1) {
7a862a02 11985 dprintf("imsm: Abort reshape due to degradation level (%i)\n", degraded);
b915c95f
AK		 11986 goto abort;
11987 }
11988
10f22854
AK		 11989 next_step = __le32_to_cpu(migr_rec->blocks_per_unit);
11990
11991 if ((current_position + next_step) > max_position)
11992 next_step = max_position - current_position;
11993
92144abf 11994 start = current_position * 512;
10f22854 11995
942e1cdb 11996 /* align reading start to old geometry */
10f22854
AK		 11997 start_buf_shift = start % old_data_stripe_length;
11998 start_src = start - start_buf_shift;
11999
12000 border = (start_src / odata) - (start / ndata);
12001 border /= 512;
12002 if (border <= __le32_to_cpu(migr_rec->dest_depth_per_unit)) {
12003 /* save critical stripes to buf
12004 * start - start address of current unit
12005 * to backup [bytes]
12006 * start_src - start address of current unit
12007 * to backup alligned to source array
12008 * [bytes]
12009 */
594dc1b8 12010 unsigned long long next_step_filler;
10f22854
AK		 12011 unsigned long long copy_length = next_step * 512;
12012
12013 /* allign copy area length to stripe in old geometry */
12014 next_step_filler = ((copy_length + start_buf_shift)
12015 % old_data_stripe_length);
12016 if (next_step_filler)
12017 next_step_filler = (old_data_stripe_length
12018 - next_step_filler);
7a862a02 12019 dprintf("save_stripes() parameters: start = %llu,\tstart_src = %llu,\tnext_step*512 = %llu,\tstart_in_buf_shift = %llu,\tnext_step_filler = %llu\n",
10f22854
AK		 12020 start, start_src, copy_length,
12021 start_buf_shift, next_step_filler);
12022
12023 if (save_stripes(fds, offsets, map_src->num_members,
ab724b98
AK		 12024 chunk, map_src->raid_level,
12025 source_layout, 0, NULL, start_src,
10f22854
AK		 12026 copy_length +
12027 next_step_filler + start_buf_shift,
12028 buf)) {
7a862a02 12029 dprintf("imsm: Cannot save stripes to buffer\n");
10f22854
AK		 12030 goto abort;
12031 }
12032 /* Convert data to destination format and store it
12033 * in backup general migration area
12034 */
12035 if (save_backup_imsm(st, dev, sra,
aea93171 12036 buf + start_buf_shift, copy_length)) {
7a862a02 12037 dprintf("imsm: Cannot save stripes to target devices\n");
10f22854
AK		 12038 goto abort;
12039 }
12040 if (save_checkpoint_imsm(st, sra,
12041 UNIT_SRC_IN_CP_AREA)) {
7a862a02 12042 dprintf("imsm: Cannot write checkpoint to migration record (UNIT_SRC_IN_CP_AREA)\n");
10f22854
AK		 12043 goto abort;
12044 }
8016a6d4
AK		 12045 } else {
12046 /* set next step to use whole border area */
12047 border /= next_step;
12048 if (border > 1)
12049 next_step *= border;
10f22854
AK		 12050 }
12051 /* When data backed up, checkpoint stored,
12052 * kick the kernel to reshape unit of data
12053 */
12054 next_step = next_step + sra->reshape_progress;
8016a6d4
AK		 12055 /* limit next step to array max position */
12056 if (next_step > max_position)
12057 next_step = max_position;
10f22854
AK		 12058 sysfs_set_num(sra, NULL, "suspend_lo", sra->reshape_progress);
12059 sysfs_set_num(sra, NULL, "suspend_hi", next_step);
ae9f01f8 12060 sra->reshape_progress = next_step;
10f22854
AK		 12061
12062 /* wait until reshape finish */
c85338c6 12063 if (wait_for_reshape_imsm(sra, ndata)) {
c47b0ff6
AK		 12064 dprintf("wait_for_reshape_imsm returned error!\n");
12065 goto abort;
12066 }
84d11e6c
N		 12067 if (sigterm)
12068 goto abort;
10f22854 12069
0228d92c
AK		 12070 if (save_checkpoint_imsm(st, sra, UNIT_SRC_NORMAL) == 1) {
12071 /* ignore error == 2, this can mean end of reshape here
12072 */
7a862a02 12073 dprintf("imsm: Cannot write checkpoint to migration record (UNIT_SRC_NORMAL)\n");
10f22854
AK		 12074 goto abort;
12075 }
12076
12077 }
12078
71e5411e
PB		 12079 /* clear migr_rec on disks after successful migration */
12080 struct dl *d;
12081
85337573 12082 memset(super->migr_rec_buf, 0, MIGR_REC_BUF_SECTORS*MAX_SECTOR_SIZE);
71e5411e
PB		 12083 for (d = super->disks; d; d = d->next) {
12084 if (d->index < 0 || is_failed(&d->disk))
12085 continue;
12086 unsigned long long dsize;
12087
12088 get_dev_size(d->fd, NULL, &dsize);
de44e46f 12089 if (lseek64(d->fd, dsize - MIGR_REC_SECTOR_POSITION*sector_size,
71e5411e 12090 SEEK_SET) >= 0) {
466070ad 12091 if ((unsigned int)write(d->fd, super->migr_rec_buf,
de44e46f
PB		 12092 MIGR_REC_BUF_SECTORS*sector_size) !=
12093 MIGR_REC_BUF_SECTORS*sector_size)
71e5411e
PB		 12094 perror("Write migr_rec failed");
12095 }
12096 }
12097
10f22854
AK		 12098 /* return '1' if done */
12099 ret_val = 1;
12100abort:
12101 free(buf);
942e1cdb
N		 12102 /* See Grow.c: abort_reshape() for further explanation */
12103 sysfs_set_num(sra, NULL, "suspend_lo", 0x7FFFFFFFFFFFFFFFULL);
12104 sysfs_set_num(sra, NULL, "suspend_hi", 0);
12105 sysfs_set_num(sra, NULL, "suspend_lo", 0);
10f22854
AK		 12106
12107 return ret_val;
999b4972 12108}
0c21b485 12109
cdddbdbc 12110struct superswitch super_imsm = {
cdddbdbc
DW		 12111 .examine_super = examine_super_imsm,
12112 .brief_examine_super = brief_examine_super_imsm,
4737ae25 12113 .brief_examine_subarrays = brief_examine_subarrays_imsm,
9d84c8ea 12114 .export_examine_super = export_examine_super_imsm,
cdddbdbc
DW		 12115 .detail_super = detail_super_imsm,
12116 .brief_detail_super = brief_detail_super_imsm,
bf5a934a 12117 .write_init_super = write_init_super_imsm,
0e600426
N		 12118 .validate_geometry = validate_geometry_imsm,
12119 .add_to_super = add_to_super_imsm,
1a64be56 12120 .remove_from_super = remove_from_super_imsm,
d665cc31 12121 .detail_platform = detail_platform_imsm,
e50cf220 12122 .export_detail_platform = export_detail_platform_imsm,
33414a01 12123 .kill_subarray = kill_subarray_imsm,
aa534678 12124 .update_subarray = update_subarray_imsm,
2b959fbf 12125 .load_container = load_container_imsm,
71204a50
N		 12126 .default_geometry = default_geometry_imsm,
12127 .get_disk_controller_domain = imsm_get_disk_controller_domain,
12128 .reshape_super = imsm_reshape_super,
12129 .manage_reshape = imsm_manage_reshape,
9e2d750d 12130 .recover_backup = recover_backup_imsm,
74db60b0 12131 .copy_metadata = copy_metadata_imsm,
27156a57 12132 .examine_badblocks = examine_badblocks_imsm,
cdddbdbc
DW		 12133 .match_home = match_home_imsm,
12134 .uuid_from_super= uuid_from_super_imsm,
12135 .getinfo_super = getinfo_super_imsm,
5c4cd5da 12136 .getinfo_super_disks = getinfo_super_disks_imsm,
cdddbdbc
DW		 12137 .update_super = update_super_imsm,
12138
12139 .avail_size = avail_size_imsm,
fbfdcb06 12140 .get_spare_criteria = get_spare_criteria_imsm,
cdddbdbc
DW		 12141
12142 .compare_super = compare_super_imsm,
12143
12144 .load_super = load_super_imsm,
bf5a934a 12145 .init_super = init_super_imsm,
e683ca88 12146 .store_super = store_super_imsm,
cdddbdbc
DW		 12147 .free_super = free_super_imsm,
12148 .match_metadata_desc = match_metadata_desc_imsm,
bf5a934a 12149 .container_content = container_content_imsm,
0c21b485 12150 .validate_container = validate_container_imsm,
cdddbdbc 12151
2432ce9b
AP		 12152 .write_init_ppl = write_init_ppl_imsm,
12153 .validate_ppl = validate_ppl_imsm,
12154
cdddbdbc 12155 .external = 1,
4cce4069 12156 .name = "imsm",
845dea95
NB		 12157
12158/* for mdmon */
12159 .open_new = imsm_open_new,
ed9d66aa 12160 .set_array_state= imsm_set_array_state,
845dea95
NB		 12161 .set_disk = imsm_set_disk,
12162 .sync_metadata = imsm_sync_metadata,
88758e9d 12163 .activate_spare = imsm_activate_spare,
e8319a19 12164 .process_update = imsm_process_update,
8273f55e 12165 .prepare_update = imsm_prepare_update,
6f50473f 12166 .record_bad_block = imsm_record_badblock,
c07a5a4f 12167 .clear_bad_block = imsm_clear_badblock,
928f1424 12168 .get_bad_blocks = imsm_get_badblocks,
cdddbdbc 12169};
Unnamed repository; edit this file 'description' to name the repository.