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1 | /* | |
2 | * mdadm - Intel(R) Matrix Storage Manager Support | |
3 | * | |
4 | * Copyright (C) 2002-2008 Intel Corporation | |
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 | ||
20 | #define HAVE_STDINT_H 1 | |
21 | #include "mdadm.h" | |
22 | #include "mdmon.h" | |
23 | #include "sha1.h" | |
24 | #include "platform-intel.h" | |
25 | #include <values.h> | |
26 | #include <scsi/sg.h> | |
27 | #include <ctype.h> | |
28 | #include <dirent.h> | |
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" | |
35 | #define MPB_VERSION_MANY_VOLUMES_PER_ARRAY "1.2.00" | |
36 | #define MPB_VERSION_3OR4_DISK_ARRAY "1.2.01" | |
37 | #define MPB_VERSION_RAID5 "1.2.02" | |
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" | |
41 | #define MAX_SIGNATURE_LENGTH 32 | |
42 | #define MAX_RAID_SERIAL_LEN 16 | |
43 | ||
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 | */ | |
77 | #define MPB_ATTRIB_SUPPORTED (MPB_ATTRIB_CHECKSUM_VERIFY | \ | |
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 | \ | |
84 | MPB_ATTRIB_EXP_STRIPE_SIZE) | |
85 | ||
86 | /* Define attributes that are unused but not harmful */ | |
87 | #define MPB_ATTRIB_IGNORED (MPB_ATTRIB_NEVER_USE) | |
88 | ||
89 | #define MPB_SECTOR_CNT 2210 | |
90 | #define IMSM_RESERVED_SECTORS 4096 | |
91 | #define NUM_BLOCKS_DIRTY_STRIPE_REGION 2056 | |
92 | #define SECT_PER_MB_SHIFT 11 | |
93 | ||
94 | /* Disk configuration info. */ | |
95 | #define IMSM_MAX_DEVICES 255 | |
96 | struct imsm_disk { | |
97 | __u8 serial[MAX_RAID_SERIAL_LEN];/* 0xD8 - 0xE7 ascii serial number */ | |
98 | __u32 total_blocks; /* 0xE8 - 0xEB total blocks */ | |
99 | __u32 scsi_id; /* 0xEC - 0xEF scsi ID */ | |
100 | #define SPARE_DISK __cpu_to_le32(0x01) /* Spare */ | |
101 | #define CONFIGURED_DISK __cpu_to_le32(0x02) /* Member of some RaidDev */ | |
102 | #define FAILED_DISK __cpu_to_le32(0x04) /* Permanent failure */ | |
103 | __u32 status; /* 0xF0 - 0xF3 */ | |
104 | __u32 owner_cfg_num; /* which config 0,1,2... owns this disk */ | |
105 | #define IMSM_DISK_FILLERS 4 | |
106 | __u32 filler[IMSM_DISK_FILLERS]; /* 0xF4 - 0x107 MPB_DISK_FILLERS for future expansion */ | |
107 | }; | |
108 | ||
109 | /* map selector for map managment | |
110 | */ | |
111 | #define MAP_0 2 | |
112 | #define MAP_1 4 | |
113 | ||
114 | /* RAID map configuration infos. */ | |
115 | struct imsm_map { | |
116 | __u32 pba_of_lba0; /* start address of partition */ | |
117 | __u32 blocks_per_member;/* blocks per member */ | |
118 | __u32 num_data_stripes; /* number of data stripes */ | |
119 | __u16 blocks_per_strip; | |
120 | __u8 map_state; /* Normal, Uninitialized, Degraded, Failed */ | |
121 | #define IMSM_T_STATE_NORMAL 0 | |
122 | #define IMSM_T_STATE_UNINITIALIZED 1 | |
123 | #define IMSM_T_STATE_DEGRADED 2 | |
124 | #define IMSM_T_STATE_FAILED 3 | |
125 | __u8 raid_level; | |
126 | #define IMSM_T_RAID0 0 | |
127 | #define IMSM_T_RAID1 1 | |
128 | #define IMSM_T_RAID5 5 /* since metadata version 1.2.02 ? */ | |
129 | __u8 num_members; /* number of member disks */ | |
130 | __u8 num_domains; /* number of parity domains */ | |
131 | __u8 failed_disk_num; /* valid only when state is degraded */ | |
132 | __u8 ddf; | |
133 | __u32 filler[7]; /* expansion area */ | |
134 | #define IMSM_ORD_REBUILD (1 << 24) | |
135 | __u32 disk_ord_tbl[1]; /* disk_ord_tbl[num_members], | |
136 | * top byte contains some flags | |
137 | */ | |
138 | } __attribute__ ((packed)); | |
139 | ||
140 | struct imsm_vol { | |
141 | __u32 curr_migr_unit; | |
142 | __u32 checkpoint_id; /* id to access curr_migr_unit */ | |
143 | __u8 migr_state; /* Normal or Migrating */ | |
144 | #define MIGR_INIT 0 | |
145 | #define MIGR_REBUILD 1 | |
146 | #define MIGR_VERIFY 2 /* analagous to echo check > sync_action */ | |
147 | #define MIGR_GEN_MIGR 3 | |
148 | #define MIGR_STATE_CHANGE 4 | |
149 | #define MIGR_REPAIR 5 | |
150 | __u8 migr_type; /* Initializing, Rebuilding, ... */ | |
151 | __u8 dirty; | |
152 | __u8 fs_state; /* fast-sync state for CnG (0xff == disabled) */ | |
153 | __u16 verify_errors; /* number of mismatches */ | |
154 | __u16 bad_blocks; /* number of bad blocks during verify */ | |
155 | __u32 filler[4]; | |
156 | struct imsm_map map[1]; | |
157 | /* here comes another one if migr_state */ | |
158 | } __attribute__ ((packed)); | |
159 | ||
160 | struct imsm_dev { | |
161 | __u8 volume[MAX_RAID_SERIAL_LEN]; | |
162 | __u32 size_low; | |
163 | __u32 size_high; | |
164 | #define DEV_BOOTABLE __cpu_to_le32(0x01) | |
165 | #define DEV_BOOT_DEVICE __cpu_to_le32(0x02) | |
166 | #define DEV_READ_COALESCING __cpu_to_le32(0x04) | |
167 | #define DEV_WRITE_COALESCING __cpu_to_le32(0x08) | |
168 | #define DEV_LAST_SHUTDOWN_DIRTY __cpu_to_le32(0x10) | |
169 | #define DEV_HIDDEN_AT_BOOT __cpu_to_le32(0x20) | |
170 | #define DEV_CURRENTLY_HIDDEN __cpu_to_le32(0x40) | |
171 | #define DEV_VERIFY_AND_FIX __cpu_to_le32(0x80) | |
172 | #define DEV_MAP_STATE_UNINIT __cpu_to_le32(0x100) | |
173 | #define DEV_NO_AUTO_RECOVERY __cpu_to_le32(0x200) | |
174 | #define DEV_CLONE_N_GO __cpu_to_le32(0x400) | |
175 | #define DEV_CLONE_MAN_SYNC __cpu_to_le32(0x800) | |
176 | #define DEV_CNG_MASTER_DISK_NUM __cpu_to_le32(0x1000) | |
177 | __u32 status; /* Persistent RaidDev status */ | |
178 | __u32 reserved_blocks; /* Reserved blocks at beginning of volume */ | |
179 | __u8 migr_priority; | |
180 | __u8 num_sub_vols; | |
181 | __u8 tid; | |
182 | __u8 cng_master_disk; | |
183 | __u16 cache_policy; | |
184 | __u8 cng_state; | |
185 | __u8 cng_sub_state; | |
186 | #define IMSM_DEV_FILLERS 10 | |
187 | __u32 filler[IMSM_DEV_FILLERS]; | |
188 | struct imsm_vol vol; | |
189 | } __attribute__ ((packed)); | |
190 | ||
191 | struct imsm_super { | |
192 | __u8 sig[MAX_SIGNATURE_LENGTH]; /* 0x00 - 0x1F */ | |
193 | __u32 check_sum; /* 0x20 - 0x23 MPB Checksum */ | |
194 | __u32 mpb_size; /* 0x24 - 0x27 Size of MPB */ | |
195 | __u32 family_num; /* 0x28 - 0x2B Checksum from first time this config was written */ | |
196 | __u32 generation_num; /* 0x2C - 0x2F Incremented each time this array's MPB is written */ | |
197 | __u32 error_log_size; /* 0x30 - 0x33 in bytes */ | |
198 | __u32 attributes; /* 0x34 - 0x37 */ | |
199 | __u8 num_disks; /* 0x38 Number of configured disks */ | |
200 | __u8 num_raid_devs; /* 0x39 Number of configured volumes */ | |
201 | __u8 error_log_pos; /* 0x3A */ | |
202 | __u8 fill[1]; /* 0x3B */ | |
203 | __u32 cache_size; /* 0x3c - 0x40 in mb */ | |
204 | __u32 orig_family_num; /* 0x40 - 0x43 original family num */ | |
205 | __u32 pwr_cycle_count; /* 0x44 - 0x47 simulated power cycle count for array */ | |
206 | __u32 bbm_log_size; /* 0x48 - 0x4B - size of bad Block Mgmt Log in bytes */ | |
207 | #define IMSM_FILLERS 35 | |
208 | __u32 filler[IMSM_FILLERS]; /* 0x4C - 0xD7 RAID_MPB_FILLERS */ | |
209 | struct imsm_disk disk[1]; /* 0xD8 diskTbl[numDisks] */ | |
210 | /* here comes imsm_dev[num_raid_devs] */ | |
211 | /* here comes BBM logs */ | |
212 | } __attribute__ ((packed)); | |
213 | ||
214 | #define BBM_LOG_MAX_ENTRIES 254 | |
215 | ||
216 | struct bbm_log_entry { | |
217 | __u64 defective_block_start; | |
218 | #define UNREADABLE 0xFFFFFFFF | |
219 | __u32 spare_block_offset; | |
220 | __u16 remapped_marked_count; | |
221 | __u16 disk_ordinal; | |
222 | } __attribute__ ((__packed__)); | |
223 | ||
224 | struct bbm_log { | |
225 | __u32 signature; /* 0xABADB10C */ | |
226 | __u32 entry_count; | |
227 | __u32 reserved_spare_block_count; /* 0 */ | |
228 | __u32 reserved; /* 0xFFFF */ | |
229 | __u64 first_spare_lba; | |
230 | struct bbm_log_entry mapped_block_entries[BBM_LOG_MAX_ENTRIES]; | |
231 | } __attribute__ ((__packed__)); | |
232 | ||
233 | ||
234 | #ifndef MDASSEMBLE | |
235 | static char *map_state_str[] = { "normal", "uninitialized", "degraded", "failed" }; | |
236 | #endif | |
237 | ||
238 | #define RAID_DISK_RESERVED_BLOCKS_IMSM_HI 2209 | |
239 | ||
240 | #define GEN_MIGR_AREA_SIZE 2048 /* General Migration Copy Area size in blocks */ | |
241 | ||
242 | #define UNIT_SRC_NORMAL 0 /* Source data for curr_migr_unit must | |
243 | * be recovered using srcMap */ | |
244 | #define UNIT_SRC_IN_CP_AREA 1 /* Source data for curr_migr_unit has | |
245 | * already been migrated and must | |
246 | * be recovered from checkpoint area */ | |
247 | struct migr_record { | |
248 | __u32 rec_status; /* Status used to determine how to restart | |
249 | * migration in case it aborts | |
250 | * in some fashion */ | |
251 | __u32 curr_migr_unit; /* 0..numMigrUnits-1 */ | |
252 | __u32 family_num; /* Family number of MPB | |
253 | * containing the RaidDev | |
254 | * that is migrating */ | |
255 | __u32 ascending_migr; /* True if migrating in increasing | |
256 | * order of lbas */ | |
257 | __u32 blocks_per_unit; /* Num disk blocks per unit of operation */ | |
258 | __u32 dest_depth_per_unit; /* Num member blocks each destMap | |
259 | * member disk | |
260 | * advances per unit-of-operation */ | |
261 | __u32 ckpt_area_pba; /* Pba of first block of ckpt copy area */ | |
262 | __u32 dest_1st_member_lba; /* First member lba on first | |
263 | * stripe of destination */ | |
264 | __u32 num_migr_units; /* Total num migration units-of-op */ | |
265 | __u32 post_migr_vol_cap; /* Size of volume after | |
266 | * migration completes */ | |
267 | __u32 post_migr_vol_cap_hi; /* Expansion space for LBA64 */ | |
268 | __u32 ckpt_read_disk_num; /* Which member disk in destSubMap[0] the | |
269 | * migration ckpt record was read from | |
270 | * (for recovered migrations) */ | |
271 | } __attribute__ ((__packed__)); | |
272 | ||
273 | static __u8 migr_type(struct imsm_dev *dev) | |
274 | { | |
275 | if (dev->vol.migr_type == MIGR_VERIFY && | |
276 | dev->status & DEV_VERIFY_AND_FIX) | |
277 | return MIGR_REPAIR; | |
278 | else | |
279 | return dev->vol.migr_type; | |
280 | } | |
281 | ||
282 | static void set_migr_type(struct imsm_dev *dev, __u8 migr_type) | |
283 | { | |
284 | /* for compatibility with older oroms convert MIGR_REPAIR, into | |
285 | * MIGR_VERIFY w/ DEV_VERIFY_AND_FIX status | |
286 | */ | |
287 | if (migr_type == MIGR_REPAIR) { | |
288 | dev->vol.migr_type = MIGR_VERIFY; | |
289 | dev->status |= DEV_VERIFY_AND_FIX; | |
290 | } else { | |
291 | dev->vol.migr_type = migr_type; | |
292 | dev->status &= ~DEV_VERIFY_AND_FIX; | |
293 | } | |
294 | } | |
295 | ||
296 | static unsigned int sector_count(__u32 bytes) | |
297 | { | |
298 | return ((bytes + (512-1)) & (~(512-1))) / 512; | |
299 | } | |
300 | ||
301 | static unsigned int mpb_sectors(struct imsm_super *mpb) | |
302 | { | |
303 | return sector_count(__le32_to_cpu(mpb->mpb_size)); | |
304 | } | |
305 | ||
306 | struct intel_dev { | |
307 | struct imsm_dev *dev; | |
308 | struct intel_dev *next; | |
309 | unsigned index; | |
310 | }; | |
311 | ||
312 | struct intel_hba { | |
313 | enum sys_dev_type type; | |
314 | char *path; | |
315 | char *pci_id; | |
316 | struct intel_hba *next; | |
317 | }; | |
318 | ||
319 | enum action { | |
320 | DISK_REMOVE = 1, | |
321 | DISK_ADD | |
322 | }; | |
323 | /* internal representation of IMSM metadata */ | |
324 | struct intel_super { | |
325 | union { | |
326 | void *buf; /* O_DIRECT buffer for reading/writing metadata */ | |
327 | struct imsm_super *anchor; /* immovable parameters */ | |
328 | }; | |
329 | union { | |
330 | void *migr_rec_buf; /* buffer for I/O operations */ | |
331 | struct migr_record *migr_rec; /* migration record */ | |
332 | }; | |
333 | size_t len; /* size of the 'buf' allocation */ | |
334 | void *next_buf; /* for realloc'ing buf from the manager */ | |
335 | size_t next_len; | |
336 | int updates_pending; /* count of pending updates for mdmon */ | |
337 | int current_vol; /* index of raid device undergoing creation */ | |
338 | __u32 create_offset; /* common start for 'current_vol' */ | |
339 | __u32 random; /* random data for seeding new family numbers */ | |
340 | struct intel_dev *devlist; | |
341 | struct dl { | |
342 | struct dl *next; | |
343 | int index; | |
344 | __u8 serial[MAX_RAID_SERIAL_LEN]; | |
345 | int major, minor; | |
346 | char *devname; | |
347 | struct imsm_disk disk; | |
348 | int fd; | |
349 | int extent_cnt; | |
350 | struct extent *e; /* for determining freespace @ create */ | |
351 | int raiddisk; /* slot to fill in autolayout */ | |
352 | enum action action; | |
353 | } *disks, *current_disk; | |
354 | struct dl *disk_mgmt_list; /* list of disks to add/remove while mdmon | |
355 | active */ | |
356 | struct dl *missing; /* disks removed while we weren't looking */ | |
357 | struct bbm_log *bbm_log; | |
358 | struct intel_hba *hba; /* device path of the raid controller for this metadata */ | |
359 | const struct imsm_orom *orom; /* platform firmware support */ | |
360 | struct intel_super *next; /* (temp) list for disambiguating family_num */ | |
361 | }; | |
362 | ||
363 | struct intel_disk { | |
364 | struct imsm_disk disk; | |
365 | #define IMSM_UNKNOWN_OWNER (-1) | |
366 | int owner; | |
367 | struct intel_disk *next; | |
368 | }; | |
369 | ||
370 | struct extent { | |
371 | unsigned long long start, size; | |
372 | }; | |
373 | ||
374 | /* definitions of reshape process types */ | |
375 | enum imsm_reshape_type { | |
376 | CH_TAKEOVER, | |
377 | CH_MIGRATION, | |
378 | }; | |
379 | ||
380 | /* definition of messages passed to imsm_process_update */ | |
381 | enum imsm_update_type { | |
382 | update_activate_spare, | |
383 | update_create_array, | |
384 | update_kill_array, | |
385 | update_rename_array, | |
386 | update_add_remove_disk, | |
387 | update_reshape_container_disks, | |
388 | update_reshape_migration, | |
389 | update_takeover, | |
390 | update_general_migration_checkpoint, | |
391 | }; | |
392 | ||
393 | struct imsm_update_activate_spare { | |
394 | enum imsm_update_type type; | |
395 | struct dl *dl; | |
396 | int slot; | |
397 | int array; | |
398 | struct imsm_update_activate_spare *next; | |
399 | }; | |
400 | ||
401 | struct geo_params { | |
402 | int dev_id; | |
403 | char *dev_name; | |
404 | long long size; | |
405 | int level; | |
406 | int layout; | |
407 | int chunksize; | |
408 | int raid_disks; | |
409 | }; | |
410 | ||
411 | enum takeover_direction { | |
412 | R10_TO_R0, | |
413 | R0_TO_R10 | |
414 | }; | |
415 | struct imsm_update_takeover { | |
416 | enum imsm_update_type type; | |
417 | int subarray; | |
418 | enum takeover_direction direction; | |
419 | }; | |
420 | ||
421 | struct imsm_update_reshape { | |
422 | enum imsm_update_type type; | |
423 | int old_raid_disks; | |
424 | int new_raid_disks; | |
425 | ||
426 | int new_disks[1]; /* new_raid_disks - old_raid_disks makedev number */ | |
427 | }; | |
428 | ||
429 | struct imsm_update_reshape_migration { | |
430 | enum imsm_update_type type; | |
431 | int old_raid_disks; | |
432 | int new_raid_disks; | |
433 | /* fields for array migration changes | |
434 | */ | |
435 | int subdev; | |
436 | int new_level; | |
437 | int new_layout; | |
438 | int new_chunksize; | |
439 | ||
440 | int new_disks[1]; /* new_raid_disks - old_raid_disks makedev number */ | |
441 | }; | |
442 | ||
443 | struct imsm_update_general_migration_checkpoint { | |
444 | enum imsm_update_type type; | |
445 | __u32 curr_migr_unit; | |
446 | }; | |
447 | ||
448 | struct disk_info { | |
449 | __u8 serial[MAX_RAID_SERIAL_LEN]; | |
450 | }; | |
451 | ||
452 | struct imsm_update_create_array { | |
453 | enum imsm_update_type type; | |
454 | int dev_idx; | |
455 | struct imsm_dev dev; | |
456 | }; | |
457 | ||
458 | struct imsm_update_kill_array { | |
459 | enum imsm_update_type type; | |
460 | int dev_idx; | |
461 | }; | |
462 | ||
463 | struct imsm_update_rename_array { | |
464 | enum imsm_update_type type; | |
465 | __u8 name[MAX_RAID_SERIAL_LEN]; | |
466 | int dev_idx; | |
467 | }; | |
468 | ||
469 | struct imsm_update_add_remove_disk { | |
470 | enum imsm_update_type type; | |
471 | }; | |
472 | ||
473 | ||
474 | static const char *_sys_dev_type[] = { | |
475 | [SYS_DEV_UNKNOWN] = "Unknown", | |
476 | [SYS_DEV_SAS] = "SAS", | |
477 | [SYS_DEV_SATA] = "SATA" | |
478 | }; | |
479 | ||
480 | const char *get_sys_dev_type(enum sys_dev_type type) | |
481 | { | |
482 | if (type >= SYS_DEV_MAX) | |
483 | type = SYS_DEV_UNKNOWN; | |
484 | ||
485 | return _sys_dev_type[type]; | |
486 | } | |
487 | ||
488 | static struct intel_hba * alloc_intel_hba(struct sys_dev *device) | |
489 | { | |
490 | struct intel_hba *result = malloc(sizeof(*result)); | |
491 | if (result) { | |
492 | result->type = device->type; | |
493 | result->path = strdup(device->path); | |
494 | result->next = NULL; | |
495 | if (result->path && (result->pci_id = strrchr(result->path, '/')) != NULL) | |
496 | result->pci_id++; | |
497 | } | |
498 | return result; | |
499 | } | |
500 | ||
501 | static struct intel_hba * find_intel_hba(struct intel_hba *hba, struct sys_dev *device) | |
502 | { | |
503 | struct intel_hba *result=NULL; | |
504 | for (result = hba; result; result = result->next) { | |
505 | if (result->type == device->type && strcmp(result->path, device->path) == 0) | |
506 | break; | |
507 | } | |
508 | return result; | |
509 | } | |
510 | ||
511 | static int attach_hba_to_super(struct intel_super *super, struct sys_dev *device) | |
512 | { | |
513 | struct intel_hba *hba; | |
514 | ||
515 | /* check if disk attached to Intel HBA */ | |
516 | hba = find_intel_hba(super->hba, device); | |
517 | if (hba != NULL) | |
518 | return 1; | |
519 | /* Check if HBA is already attached to super */ | |
520 | if (super->hba == NULL) { | |
521 | super->hba = alloc_intel_hba(device); | |
522 | return 1; | |
523 | } | |
524 | ||
525 | hba = super->hba; | |
526 | /* Intel metadata allows for all disks attached to the same type HBA. | |
527 | * Do not sypport odf HBA types mixing | |
528 | */ | |
529 | if (device->type != hba->type) | |
530 | return 2; | |
531 | ||
532 | while (hba->next) | |
533 | hba = hba->next; | |
534 | ||
535 | hba->next = alloc_intel_hba(device); | |
536 | return 1; | |
537 | } | |
538 | ||
539 | static struct sys_dev* find_disk_attached_hba(int fd, const char *devname) | |
540 | { | |
541 | struct sys_dev *list, *elem, *prev; | |
542 | char *disk_path; | |
543 | ||
544 | if ((list = find_intel_devices()) == NULL) | |
545 | return 0; | |
546 | ||
547 | if (fd < 0) | |
548 | disk_path = (char *) devname; | |
549 | else | |
550 | disk_path = diskfd_to_devpath(fd); | |
551 | ||
552 | if (!disk_path) { | |
553 | free_sys_dev(&list); | |
554 | return 0; | |
555 | } | |
556 | ||
557 | for (prev = NULL, elem = list; elem; prev = elem, elem = elem->next) { | |
558 | if (path_attached_to_hba(disk_path, elem->path)) { | |
559 | if (prev == NULL) | |
560 | list = list->next; | |
561 | else | |
562 | prev->next = elem->next; | |
563 | elem->next = NULL; | |
564 | if (disk_path != devname) | |
565 | free(disk_path); | |
566 | free_sys_dev(&list); | |
567 | return elem; | |
568 | } | |
569 | } | |
570 | if (disk_path != devname) | |
571 | free(disk_path); | |
572 | free_sys_dev(&list); | |
573 | ||
574 | return NULL; | |
575 | } | |
576 | ||
577 | ||
578 | static int find_intel_hba_capability(int fd, struct intel_super *super, | |
579 | char *devname); | |
580 | ||
581 | static struct supertype *match_metadata_desc_imsm(char *arg) | |
582 | { | |
583 | struct supertype *st; | |
584 | ||
585 | if (strcmp(arg, "imsm") != 0 && | |
586 | strcmp(arg, "default") != 0 | |
587 | ) | |
588 | return NULL; | |
589 | ||
590 | st = malloc(sizeof(*st)); | |
591 | if (!st) | |
592 | return NULL; | |
593 | memset(st, 0, sizeof(*st)); | |
594 | st->container_dev = NoMdDev; | |
595 | st->ss = &super_imsm; | |
596 | st->max_devs = IMSM_MAX_DEVICES; | |
597 | st->minor_version = 0; | |
598 | st->sb = NULL; | |
599 | return st; | |
600 | } | |
601 | ||
602 | #ifndef MDASSEMBLE | |
603 | static __u8 *get_imsm_version(struct imsm_super *mpb) | |
604 | { | |
605 | return &mpb->sig[MPB_SIG_LEN]; | |
606 | } | |
607 | #endif | |
608 | ||
609 | /* retrieve a disk directly from the anchor when the anchor is known to be | |
610 | * up-to-date, currently only at load time | |
611 | */ | |
612 | static struct imsm_disk *__get_imsm_disk(struct imsm_super *mpb, __u8 index) | |
613 | { | |
614 | if (index >= mpb->num_disks) | |
615 | return NULL; | |
616 | return &mpb->disk[index]; | |
617 | } | |
618 | ||
619 | /* retrieve the disk description based on a index of the disk | |
620 | * in the sub-array | |
621 | */ | |
622 | static struct dl *get_imsm_dl_disk(struct intel_super *super, __u8 index) | |
623 | { | |
624 | struct dl *d; | |
625 | ||
626 | for (d = super->disks; d; d = d->next) | |
627 | if (d->index == index) | |
628 | return d; | |
629 | ||
630 | return NULL; | |
631 | } | |
632 | /* retrieve a disk from the parsed metadata */ | |
633 | static struct imsm_disk *get_imsm_disk(struct intel_super *super, __u8 index) | |
634 | { | |
635 | struct dl *dl; | |
636 | ||
637 | dl = get_imsm_dl_disk(super, index); | |
638 | if (dl) | |
639 | return &dl->disk; | |
640 | ||
641 | return NULL; | |
642 | } | |
643 | ||
644 | /* generate a checksum directly from the anchor when the anchor is known to be | |
645 | * up-to-date, currently only at load or write_super after coalescing | |
646 | */ | |
647 | static __u32 __gen_imsm_checksum(struct imsm_super *mpb) | |
648 | { | |
649 | __u32 end = mpb->mpb_size / sizeof(end); | |
650 | __u32 *p = (__u32 *) mpb; | |
651 | __u32 sum = 0; | |
652 | ||
653 | while (end--) { | |
654 | sum += __le32_to_cpu(*p); | |
655 | p++; | |
656 | } | |
657 | ||
658 | return sum - __le32_to_cpu(mpb->check_sum); | |
659 | } | |
660 | ||
661 | static size_t sizeof_imsm_map(struct imsm_map *map) | |
662 | { | |
663 | return sizeof(struct imsm_map) + sizeof(__u32) * (map->num_members - 1); | |
664 | } | |
665 | ||
666 | struct imsm_map *get_imsm_map(struct imsm_dev *dev, int second_map) | |
667 | { | |
668 | /* A device can have 2 maps if it is in the middle of a migration. | |
669 | * If second_map is: | |
670 | * MAP_0 or 0 - we return the first map | |
671 | * MAP_1 or 1 - we return the second map if it exists, else NULL | |
672 | * -1 - we return the second map if it exists, else the first | |
673 | */ | |
674 | struct imsm_map *map = &dev->vol.map[0]; | |
675 | struct imsm_map *map2 = NULL; | |
676 | ||
677 | if (dev->vol.migr_state) | |
678 | map2 = (void *)map + sizeof_imsm_map(map); | |
679 | ||
680 | switch (second_map) { | |
681 | case MAP_0: | |
682 | case 0: | |
683 | break; | |
684 | case MAP_1: | |
685 | case 1: | |
686 | map = map2; | |
687 | break; | |
688 | case -1: | |
689 | if (map2) | |
690 | map = map2; | |
691 | break; | |
692 | default: | |
693 | map = NULL; | |
694 | } | |
695 | return map; | |
696 | ||
697 | } | |
698 | ||
699 | /* return the size of the device. | |
700 | * migr_state increases the returned size if map[0] were to be duplicated | |
701 | */ | |
702 | static size_t sizeof_imsm_dev(struct imsm_dev *dev, int migr_state) | |
703 | { | |
704 | size_t size = sizeof(*dev) - sizeof(struct imsm_map) + | |
705 | sizeof_imsm_map(get_imsm_map(dev, 0)); | |
706 | ||
707 | /* migrating means an additional map */ | |
708 | if (dev->vol.migr_state) | |
709 | size += sizeof_imsm_map(get_imsm_map(dev, 1)); | |
710 | else if (migr_state) | |
711 | size += sizeof_imsm_map(get_imsm_map(dev, 0)); | |
712 | ||
713 | return size; | |
714 | } | |
715 | ||
716 | #ifndef MDASSEMBLE | |
717 | /* retrieve disk serial number list from a metadata update */ | |
718 | static struct disk_info *get_disk_info(struct imsm_update_create_array *update) | |
719 | { | |
720 | void *u = update; | |
721 | struct disk_info *inf; | |
722 | ||
723 | inf = u + sizeof(*update) - sizeof(struct imsm_dev) + | |
724 | sizeof_imsm_dev(&update->dev, 0); | |
725 | ||
726 | return inf; | |
727 | } | |
728 | #endif | |
729 | ||
730 | static struct imsm_dev *__get_imsm_dev(struct imsm_super *mpb, __u8 index) | |
731 | { | |
732 | int offset; | |
733 | int i; | |
734 | void *_mpb = mpb; | |
735 | ||
736 | if (index >= mpb->num_raid_devs) | |
737 | return NULL; | |
738 | ||
739 | /* devices start after all disks */ | |
740 | offset = ((void *) &mpb->disk[mpb->num_disks]) - _mpb; | |
741 | ||
742 | for (i = 0; i <= index; i++) | |
743 | if (i == index) | |
744 | return _mpb + offset; | |
745 | else | |
746 | offset += sizeof_imsm_dev(_mpb + offset, 0); | |
747 | ||
748 | return NULL; | |
749 | } | |
750 | ||
751 | static struct imsm_dev *get_imsm_dev(struct intel_super *super, __u8 index) | |
752 | { | |
753 | struct intel_dev *dv; | |
754 | ||
755 | if (index >= super->anchor->num_raid_devs) | |
756 | return NULL; | |
757 | for (dv = super->devlist; dv; dv = dv->next) | |
758 | if (dv->index == index) | |
759 | return dv->dev; | |
760 | return NULL; | |
761 | } | |
762 | ||
763 | /* | |
764 | * for second_map: | |
765 | * == 0 get first map | |
766 | * == 1 get second map | |
767 | * == -1 than get map according to the current migr_state | |
768 | */ | |
769 | static __u32 get_imsm_ord_tbl_ent(struct imsm_dev *dev, | |
770 | int slot, | |
771 | int second_map) | |
772 | { | |
773 | struct imsm_map *map; | |
774 | ||
775 | map = get_imsm_map(dev, second_map); | |
776 | ||
777 | /* top byte identifies disk under rebuild */ | |
778 | return __le32_to_cpu(map->disk_ord_tbl[slot]); | |
779 | } | |
780 | ||
781 | #define ord_to_idx(ord) (((ord) << 8) >> 8) | |
782 | static __u32 get_imsm_disk_idx(struct imsm_dev *dev, int slot, int second_map) | |
783 | { | |
784 | __u32 ord = get_imsm_ord_tbl_ent(dev, slot, second_map); | |
785 | ||
786 | return ord_to_idx(ord); | |
787 | } | |
788 | ||
789 | static void set_imsm_ord_tbl_ent(struct imsm_map *map, int slot, __u32 ord) | |
790 | { | |
791 | map->disk_ord_tbl[slot] = __cpu_to_le32(ord); | |
792 | } | |
793 | ||
794 | static int get_imsm_disk_slot(struct imsm_map *map, unsigned idx) | |
795 | { | |
796 | int slot; | |
797 | __u32 ord; | |
798 | ||
799 | for (slot = 0; slot < map->num_members; slot++) { | |
800 | ord = __le32_to_cpu(map->disk_ord_tbl[slot]); | |
801 | if (ord_to_idx(ord) == idx) | |
802 | return slot; | |
803 | } | |
804 | ||
805 | return -1; | |
806 | } | |
807 | ||
808 | static int get_imsm_raid_level(struct imsm_map *map) | |
809 | { | |
810 | if (map->raid_level == 1) { | |
811 | if (map->num_members == 2) | |
812 | return 1; | |
813 | else | |
814 | return 10; | |
815 | } | |
816 | ||
817 | return map->raid_level; | |
818 | } | |
819 | ||
820 | static int cmp_extent(const void *av, const void *bv) | |
821 | { | |
822 | const struct extent *a = av; | |
823 | const struct extent *b = bv; | |
824 | if (a->start < b->start) | |
825 | return -1; | |
826 | if (a->start > b->start) | |
827 | return 1; | |
828 | return 0; | |
829 | } | |
830 | ||
831 | static int count_memberships(struct dl *dl, struct intel_super *super) | |
832 | { | |
833 | int memberships = 0; | |
834 | int i; | |
835 | ||
836 | for (i = 0; i < super->anchor->num_raid_devs; i++) { | |
837 | struct imsm_dev *dev = get_imsm_dev(super, i); | |
838 | struct imsm_map *map = get_imsm_map(dev, 0); | |
839 | ||
840 | if (get_imsm_disk_slot(map, dl->index) >= 0) | |
841 | memberships++; | |
842 | } | |
843 | ||
844 | return memberships; | |
845 | } | |
846 | ||
847 | static __u32 imsm_min_reserved_sectors(struct intel_super *super); | |
848 | ||
849 | static struct extent *get_extents(struct intel_super *super, struct dl *dl) | |
850 | { | |
851 | /* find a list of used extents on the given physical device */ | |
852 | struct extent *rv, *e; | |
853 | int i; | |
854 | int memberships = count_memberships(dl, super); | |
855 | __u32 reservation; | |
856 | ||
857 | /* trim the reserved area for spares, so they can join any array | |
858 | * regardless of whether the OROM has assigned sectors from the | |
859 | * IMSM_RESERVED_SECTORS region | |
860 | */ | |
861 | if (dl->index == -1) | |
862 | reservation = imsm_min_reserved_sectors(super); | |
863 | else | |
864 | reservation = MPB_SECTOR_CNT + IMSM_RESERVED_SECTORS; | |
865 | ||
866 | rv = malloc(sizeof(struct extent) * (memberships + 1)); | |
867 | if (!rv) | |
868 | return NULL; | |
869 | e = rv; | |
870 | ||
871 | for (i = 0; i < super->anchor->num_raid_devs; i++) { | |
872 | struct imsm_dev *dev = get_imsm_dev(super, i); | |
873 | struct imsm_map *map = get_imsm_map(dev, 0); | |
874 | ||
875 | if (get_imsm_disk_slot(map, dl->index) >= 0) { | |
876 | e->start = __le32_to_cpu(map->pba_of_lba0); | |
877 | e->size = __le32_to_cpu(map->blocks_per_member); | |
878 | e++; | |
879 | } | |
880 | } | |
881 | qsort(rv, memberships, sizeof(*rv), cmp_extent); | |
882 | ||
883 | /* determine the start of the metadata | |
884 | * when no raid devices are defined use the default | |
885 | * ...otherwise allow the metadata to truncate the value | |
886 | * as is the case with older versions of imsm | |
887 | */ | |
888 | if (memberships) { | |
889 | struct extent *last = &rv[memberships - 1]; | |
890 | __u32 remainder; | |
891 | ||
892 | remainder = __le32_to_cpu(dl->disk.total_blocks) - | |
893 | (last->start + last->size); | |
894 | /* round down to 1k block to satisfy precision of the kernel | |
895 | * 'size' interface | |
896 | */ | |
897 | remainder &= ~1UL; | |
898 | /* make sure remainder is still sane */ | |
899 | if (remainder < (unsigned)ROUND_UP(super->len, 512) >> 9) | |
900 | remainder = ROUND_UP(super->len, 512) >> 9; | |
901 | if (reservation > remainder) | |
902 | reservation = remainder; | |
903 | } | |
904 | e->start = __le32_to_cpu(dl->disk.total_blocks) - reservation; | |
905 | e->size = 0; | |
906 | return rv; | |
907 | } | |
908 | ||
909 | /* try to determine how much space is reserved for metadata from | |
910 | * the last get_extents() entry, otherwise fallback to the | |
911 | * default | |
912 | */ | |
913 | static __u32 imsm_reserved_sectors(struct intel_super *super, struct dl *dl) | |
914 | { | |
915 | struct extent *e; | |
916 | int i; | |
917 | __u32 rv; | |
918 | ||
919 | /* for spares just return a minimal reservation which will grow | |
920 | * once the spare is picked up by an array | |
921 | */ | |
922 | if (dl->index == -1) | |
923 | return MPB_SECTOR_CNT; | |
924 | ||
925 | e = get_extents(super, dl); | |
926 | if (!e) | |
927 | return MPB_SECTOR_CNT + IMSM_RESERVED_SECTORS; | |
928 | ||
929 | /* scroll to last entry */ | |
930 | for (i = 0; e[i].size; i++) | |
931 | continue; | |
932 | ||
933 | rv = __le32_to_cpu(dl->disk.total_blocks) - e[i].start; | |
934 | ||
935 | free(e); | |
936 | ||
937 | return rv; | |
938 | } | |
939 | ||
940 | static int is_spare(struct imsm_disk *disk) | |
941 | { | |
942 | return (disk->status & SPARE_DISK) == SPARE_DISK; | |
943 | } | |
944 | ||
945 | static int is_configured(struct imsm_disk *disk) | |
946 | { | |
947 | return (disk->status & CONFIGURED_DISK) == CONFIGURED_DISK; | |
948 | } | |
949 | ||
950 | static int is_failed(struct imsm_disk *disk) | |
951 | { | |
952 | return (disk->status & FAILED_DISK) == FAILED_DISK; | |
953 | } | |
954 | ||
955 | /* try to determine how much space is reserved for metadata from | |
956 | * the last get_extents() entry on the smallest active disk, | |
957 | * otherwise fallback to the default | |
958 | */ | |
959 | static __u32 imsm_min_reserved_sectors(struct intel_super *super) | |
960 | { | |
961 | struct extent *e; | |
962 | int i; | |
963 | __u32 min_active, remainder; | |
964 | __u32 rv = MPB_SECTOR_CNT + IMSM_RESERVED_SECTORS; | |
965 | struct dl *dl, *dl_min = NULL; | |
966 | ||
967 | if (!super) | |
968 | return rv; | |
969 | ||
970 | min_active = 0; | |
971 | for (dl = super->disks; dl; dl = dl->next) { | |
972 | if (dl->index < 0) | |
973 | continue; | |
974 | if (dl->disk.total_blocks < min_active || min_active == 0) { | |
975 | dl_min = dl; | |
976 | min_active = dl->disk.total_blocks; | |
977 | } | |
978 | } | |
979 | if (!dl_min) | |
980 | return rv; | |
981 | ||
982 | /* find last lba used by subarrays on the smallest active disk */ | |
983 | e = get_extents(super, dl_min); | |
984 | if (!e) | |
985 | return rv; | |
986 | for (i = 0; e[i].size; i++) | |
987 | continue; | |
988 | ||
989 | remainder = min_active - e[i].start; | |
990 | free(e); | |
991 | ||
992 | /* to give priority to recovery we should not require full | |
993 | IMSM_RESERVED_SECTORS from the spare */ | |
994 | rv = MPB_SECTOR_CNT + NUM_BLOCKS_DIRTY_STRIPE_REGION; | |
995 | ||
996 | /* if real reservation is smaller use that value */ | |
997 | return (remainder < rv) ? remainder : rv; | |
998 | } | |
999 | ||
1000 | /* Return minimum size of a spare that can be used in this array*/ | |
1001 | static unsigned long long min_acceptable_spare_size_imsm(struct supertype *st) | |
1002 | { | |
1003 | struct intel_super *super = st->sb; | |
1004 | struct dl *dl; | |
1005 | struct extent *e; | |
1006 | int i; | |
1007 | unsigned long long rv = 0; | |
1008 | ||
1009 | if (!super) | |
1010 | return rv; | |
1011 | /* find first active disk in array */ | |
1012 | dl = super->disks; | |
1013 | while (dl && (is_failed(&dl->disk) || dl->index == -1)) | |
1014 | dl = dl->next; | |
1015 | if (!dl) | |
1016 | return rv; | |
1017 | /* find last lba used by subarrays */ | |
1018 | e = get_extents(super, dl); | |
1019 | if (!e) | |
1020 | return rv; | |
1021 | for (i = 0; e[i].size; i++) | |
1022 | continue; | |
1023 | if (i > 0) | |
1024 | rv = e[i-1].start + e[i-1].size; | |
1025 | free(e); | |
1026 | ||
1027 | /* add the amount of space needed for metadata */ | |
1028 | rv = rv + imsm_min_reserved_sectors(super); | |
1029 | ||
1030 | return rv * 512; | |
1031 | } | |
1032 | ||
1033 | static int is_gen_migration(struct imsm_dev *dev); | |
1034 | ||
1035 | #ifndef MDASSEMBLE | |
1036 | static __u64 blocks_per_migr_unit(struct intel_super *super, | |
1037 | struct imsm_dev *dev); | |
1038 | ||
1039 | static void print_imsm_dev(struct intel_super *super, | |
1040 | struct imsm_dev *dev, | |
1041 | char *uuid, | |
1042 | int disk_idx) | |
1043 | { | |
1044 | __u64 sz; | |
1045 | int slot, i; | |
1046 | struct imsm_map *map = get_imsm_map(dev, 0); | |
1047 | struct imsm_map *map2 = get_imsm_map(dev, 1); | |
1048 | __u32 ord; | |
1049 | ||
1050 | printf("\n"); | |
1051 | printf("[%.16s]:\n", dev->volume); | |
1052 | printf(" UUID : %s\n", uuid); | |
1053 | printf(" RAID Level : %d", get_imsm_raid_level(map)); | |
1054 | if (map2) | |
1055 | printf(" <-- %d", get_imsm_raid_level(map2)); | |
1056 | printf("\n"); | |
1057 | printf(" Members : %d", map->num_members); | |
1058 | if (map2) | |
1059 | printf(" <-- %d", map2->num_members); | |
1060 | printf("\n"); | |
1061 | printf(" Slots : ["); | |
1062 | for (i = 0; i < map->num_members; i++) { | |
1063 | ord = get_imsm_ord_tbl_ent(dev, i, 0); | |
1064 | printf("%s", ord & IMSM_ORD_REBUILD ? "_" : "U"); | |
1065 | } | |
1066 | printf("]"); | |
1067 | if (map2) { | |
1068 | printf(" <-- ["); | |
1069 | for (i = 0; i < map2->num_members; i++) { | |
1070 | ord = get_imsm_ord_tbl_ent(dev, i, 1); | |
1071 | printf("%s", ord & IMSM_ORD_REBUILD ? "_" : "U"); | |
1072 | } | |
1073 | printf("]"); | |
1074 | } | |
1075 | printf("\n"); | |
1076 | printf(" Failed disk : "); | |
1077 | if (map->failed_disk_num == 0xff) | |
1078 | printf("none"); | |
1079 | else | |
1080 | printf("%i", map->failed_disk_num); | |
1081 | printf("\n"); | |
1082 | slot = get_imsm_disk_slot(map, disk_idx); | |
1083 | if (slot >= 0) { | |
1084 | ord = get_imsm_ord_tbl_ent(dev, slot, -1); | |
1085 | printf(" This Slot : %d%s\n", slot, | |
1086 | ord & IMSM_ORD_REBUILD ? " (out-of-sync)" : ""); | |
1087 | } else | |
1088 | printf(" This Slot : ?\n"); | |
1089 | sz = __le32_to_cpu(dev->size_high); | |
1090 | sz <<= 32; | |
1091 | sz += __le32_to_cpu(dev->size_low); | |
1092 | printf(" Array Size : %llu%s\n", (unsigned long long)sz, | |
1093 | human_size(sz * 512)); | |
1094 | sz = __le32_to_cpu(map->blocks_per_member); | |
1095 | printf(" Per Dev Size : %llu%s\n", (unsigned long long)sz, | |
1096 | human_size(sz * 512)); | |
1097 | printf(" Sector Offset : %u\n", | |
1098 | __le32_to_cpu(map->pba_of_lba0)); | |
1099 | printf(" Num Stripes : %u\n", | |
1100 | __le32_to_cpu(map->num_data_stripes)); | |
1101 | printf(" Chunk Size : %u KiB", | |
1102 | __le16_to_cpu(map->blocks_per_strip) / 2); | |
1103 | if (map2) | |
1104 | printf(" <-- %u KiB", | |
1105 | __le16_to_cpu(map2->blocks_per_strip) / 2); | |
1106 | printf("\n"); | |
1107 | printf(" Reserved : %d\n", __le32_to_cpu(dev->reserved_blocks)); | |
1108 | printf(" Migrate State : "); | |
1109 | if (dev->vol.migr_state) { | |
1110 | if (migr_type(dev) == MIGR_INIT) | |
1111 | printf("initialize\n"); | |
1112 | else if (migr_type(dev) == MIGR_REBUILD) | |
1113 | printf("rebuild\n"); | |
1114 | else if (migr_type(dev) == MIGR_VERIFY) | |
1115 | printf("check\n"); | |
1116 | else if (migr_type(dev) == MIGR_GEN_MIGR) | |
1117 | printf("general migration\n"); | |
1118 | else if (migr_type(dev) == MIGR_STATE_CHANGE) | |
1119 | printf("state change\n"); | |
1120 | else if (migr_type(dev) == MIGR_REPAIR) | |
1121 | printf("repair\n"); | |
1122 | else | |
1123 | printf("<unknown:%d>\n", migr_type(dev)); | |
1124 | } else | |
1125 | printf("idle\n"); | |
1126 | printf(" Map State : %s", map_state_str[map->map_state]); | |
1127 | if (dev->vol.migr_state) { | |
1128 | struct imsm_map *map = get_imsm_map(dev, 1); | |
1129 | ||
1130 | printf(" <-- %s", map_state_str[map->map_state]); | |
1131 | printf("\n Checkpoint : %u ", | |
1132 | __le32_to_cpu(dev->vol.curr_migr_unit)); | |
1133 | if ((is_gen_migration(dev)) && (super->disks->index > 1)) | |
1134 | printf("(N/A)"); | |
1135 | else | |
1136 | printf("(%llu)", (unsigned long long) | |
1137 | blocks_per_migr_unit(super, dev)); | |
1138 | } | |
1139 | printf("\n"); | |
1140 | printf(" Dirty State : %s\n", dev->vol.dirty ? "dirty" : "clean"); | |
1141 | } | |
1142 | ||
1143 | static void print_imsm_disk(struct imsm_disk *disk, int index, __u32 reserved) | |
1144 | { | |
1145 | char str[MAX_RAID_SERIAL_LEN + 1]; | |
1146 | __u64 sz; | |
1147 | ||
1148 | if (index < -1 || !disk) | |
1149 | return; | |
1150 | ||
1151 | printf("\n"); | |
1152 | snprintf(str, MAX_RAID_SERIAL_LEN + 1, "%s", disk->serial); | |
1153 | if (index >= 0) | |
1154 | printf(" Disk%02d Serial : %s\n", index, str); | |
1155 | else | |
1156 | printf(" Disk Serial : %s\n", str); | |
1157 | printf(" State :%s%s%s\n", is_spare(disk) ? " spare" : "", | |
1158 | is_configured(disk) ? " active" : "", | |
1159 | is_failed(disk) ? " failed" : ""); | |
1160 | printf(" Id : %08x\n", __le32_to_cpu(disk->scsi_id)); | |
1161 | sz = __le32_to_cpu(disk->total_blocks) - reserved; | |
1162 | printf(" Usable Size : %llu%s\n", (unsigned long long)sz, | |
1163 | human_size(sz * 512)); | |
1164 | } | |
1165 | ||
1166 | void examine_migr_rec_imsm(struct intel_super *super) | |
1167 | { | |
1168 | struct migr_record *migr_rec = super->migr_rec; | |
1169 | struct imsm_super *mpb = super->anchor; | |
1170 | int i; | |
1171 | ||
1172 | for (i = 0; i < mpb->num_raid_devs; i++) { | |
1173 | struct imsm_dev *dev = __get_imsm_dev(mpb, i); | |
1174 | if (is_gen_migration(dev) == 0) | |
1175 | continue; | |
1176 | ||
1177 | printf("\nMigration Record Information:"); | |
1178 | if (super->disks->index > 1) { | |
1179 | printf(" Empty\n "); | |
1180 | printf("Examine one of first two disks in array\n"); | |
1181 | break; | |
1182 | } | |
1183 | printf("\n Status : "); | |
1184 | if (__le32_to_cpu(migr_rec->rec_status) == UNIT_SRC_NORMAL) | |
1185 | printf("Normal\n"); | |
1186 | else | |
1187 | printf("Contains Data\n"); | |
1188 | printf(" Current Unit : %u\n", | |
1189 | __le32_to_cpu(migr_rec->curr_migr_unit)); | |
1190 | printf(" Family : %u\n", | |
1191 | __le32_to_cpu(migr_rec->family_num)); | |
1192 | printf(" Ascending : %u\n", | |
1193 | __le32_to_cpu(migr_rec->ascending_migr)); | |
1194 | printf(" Blocks Per Unit : %u\n", | |
1195 | __le32_to_cpu(migr_rec->blocks_per_unit)); | |
1196 | printf(" Dest. Depth Per Unit : %u\n", | |
1197 | __le32_to_cpu(migr_rec->dest_depth_per_unit)); | |
1198 | printf(" Checkpoint Area pba : %u\n", | |
1199 | __le32_to_cpu(migr_rec->ckpt_area_pba)); | |
1200 | printf(" First member lba : %u\n", | |
1201 | __le32_to_cpu(migr_rec->dest_1st_member_lba)); | |
1202 | printf(" Total Number of Units : %u\n", | |
1203 | __le32_to_cpu(migr_rec->num_migr_units)); | |
1204 | printf(" Size of volume : %u\n", | |
1205 | __le32_to_cpu(migr_rec->post_migr_vol_cap)); | |
1206 | printf(" Expansion space for LBA64 : %u\n", | |
1207 | __le32_to_cpu(migr_rec->post_migr_vol_cap_hi)); | |
1208 | printf(" Record was read from : %u\n", | |
1209 | __le32_to_cpu(migr_rec->ckpt_read_disk_num)); | |
1210 | ||
1211 | break; | |
1212 | } | |
1213 | } | |
1214 | #endif /* MDASSEMBLE */ | |
1215 | /******************************************************************************* | |
1216 | * function: imsm_check_attributes | |
1217 | * Description: Function checks if features represented by attributes flags | |
1218 | * are supported by mdadm. | |
1219 | * Parameters: | |
1220 | * attributes - Attributes read from metadata | |
1221 | * Returns: | |
1222 | * 0 - passed attributes contains unsupported features flags | |
1223 | * 1 - all features are supported | |
1224 | ******************************************************************************/ | |
1225 | static int imsm_check_attributes(__u32 attributes) | |
1226 | { | |
1227 | int ret_val = 1; | |
1228 | __u32 not_supported = MPB_ATTRIB_SUPPORTED^0xffffffff; | |
1229 | ||
1230 | not_supported &= ~MPB_ATTRIB_IGNORED; | |
1231 | ||
1232 | not_supported &= attributes; | |
1233 | if (not_supported) { | |
1234 | fprintf(stderr, Name "(IMSM): Unsupported attributes : %x\n", | |
1235 | (unsigned)__le32_to_cpu(not_supported)); | |
1236 | if (not_supported & MPB_ATTRIB_CHECKSUM_VERIFY) { | |
1237 | dprintf("\t\tMPB_ATTRIB_CHECKSUM_VERIFY \n"); | |
1238 | not_supported ^= MPB_ATTRIB_CHECKSUM_VERIFY; | |
1239 | } | |
1240 | if (not_supported & MPB_ATTRIB_2TB) { | |
1241 | dprintf("\t\tMPB_ATTRIB_2TB\n"); | |
1242 | not_supported ^= MPB_ATTRIB_2TB; | |
1243 | } | |
1244 | if (not_supported & MPB_ATTRIB_RAID0) { | |
1245 | dprintf("\t\tMPB_ATTRIB_RAID0\n"); | |
1246 | not_supported ^= MPB_ATTRIB_RAID0; | |
1247 | } | |
1248 | if (not_supported & MPB_ATTRIB_RAID1) { | |
1249 | dprintf("\t\tMPB_ATTRIB_RAID1\n"); | |
1250 | not_supported ^= MPB_ATTRIB_RAID1; | |
1251 | } | |
1252 | if (not_supported & MPB_ATTRIB_RAID10) { | |
1253 | dprintf("\t\tMPB_ATTRIB_RAID10\n"); | |
1254 | not_supported ^= MPB_ATTRIB_RAID10; | |
1255 | } | |
1256 | if (not_supported & MPB_ATTRIB_RAID1E) { | |
1257 | dprintf("\t\tMPB_ATTRIB_RAID1E\n"); | |
1258 | not_supported ^= MPB_ATTRIB_RAID1E; | |
1259 | } | |
1260 | if (not_supported & MPB_ATTRIB_RAID5) { | |
1261 | dprintf("\t\tMPB_ATTRIB_RAID5\n"); | |
1262 | not_supported ^= MPB_ATTRIB_RAID5; | |
1263 | } | |
1264 | if (not_supported & MPB_ATTRIB_RAIDCNG) { | |
1265 | dprintf("\t\tMPB_ATTRIB_RAIDCNG\n"); | |
1266 | not_supported ^= MPB_ATTRIB_RAIDCNG; | |
1267 | } | |
1268 | if (not_supported & MPB_ATTRIB_BBM) { | |
1269 | dprintf("\t\tMPB_ATTRIB_BBM\n"); | |
1270 | not_supported ^= MPB_ATTRIB_BBM; | |
1271 | } | |
1272 | if (not_supported & MPB_ATTRIB_CHECKSUM_VERIFY) { | |
1273 | dprintf("\t\tMPB_ATTRIB_CHECKSUM_VERIFY (== MPB_ATTRIB_LEGACY)\n"); | |
1274 | not_supported ^= MPB_ATTRIB_CHECKSUM_VERIFY; | |
1275 | } | |
1276 | if (not_supported & MPB_ATTRIB_EXP_STRIPE_SIZE) { | |
1277 | dprintf("\t\tMPB_ATTRIB_EXP_STRIP_SIZE\n"); | |
1278 | not_supported ^= MPB_ATTRIB_EXP_STRIPE_SIZE; | |
1279 | } | |
1280 | if (not_supported & MPB_ATTRIB_2TB_DISK) { | |
1281 | dprintf("\t\tMPB_ATTRIB_2TB_DISK\n"); | |
1282 | not_supported ^= MPB_ATTRIB_2TB_DISK; | |
1283 | } | |
1284 | if (not_supported & MPB_ATTRIB_NEVER_USE2) { | |
1285 | dprintf("\t\tMPB_ATTRIB_NEVER_USE2\n"); | |
1286 | not_supported ^= MPB_ATTRIB_NEVER_USE2; | |
1287 | } | |
1288 | if (not_supported & MPB_ATTRIB_NEVER_USE) { | |
1289 | dprintf("\t\tMPB_ATTRIB_NEVER_USE\n"); | |
1290 | not_supported ^= MPB_ATTRIB_NEVER_USE; | |
1291 | } | |
1292 | ||
1293 | if (not_supported) | |
1294 | dprintf(Name "(IMSM): Unknown attributes : %x\n", not_supported); | |
1295 | ||
1296 | ret_val = 0; | |
1297 | } | |
1298 | ||
1299 | return ret_val; | |
1300 | } | |
1301 | ||
1302 | #ifndef MDASSEMBLE | |
1303 | static void getinfo_super_imsm(struct supertype *st, struct mdinfo *info, char *map); | |
1304 | ||
1305 | static void examine_super_imsm(struct supertype *st, char *homehost) | |
1306 | { | |
1307 | struct intel_super *super = st->sb; | |
1308 | struct imsm_super *mpb = super->anchor; | |
1309 | char str[MAX_SIGNATURE_LENGTH]; | |
1310 | int i; | |
1311 | struct mdinfo info; | |
1312 | char nbuf[64]; | |
1313 | __u32 sum; | |
1314 | __u32 reserved = imsm_reserved_sectors(super, super->disks); | |
1315 | struct dl *dl; | |
1316 | ||
1317 | snprintf(str, MPB_SIG_LEN, "%s", mpb->sig); | |
1318 | printf(" Magic : %s\n", str); | |
1319 | snprintf(str, strlen(MPB_VERSION_RAID0), "%s", get_imsm_version(mpb)); | |
1320 | printf(" Version : %s\n", get_imsm_version(mpb)); | |
1321 | printf(" Orig Family : %08x\n", __le32_to_cpu(mpb->orig_family_num)); | |
1322 | printf(" Family : %08x\n", __le32_to_cpu(mpb->family_num)); | |
1323 | printf(" Generation : %08x\n", __le32_to_cpu(mpb->generation_num)); | |
1324 | printf(" Attributes : "); | |
1325 | if (imsm_check_attributes(mpb->attributes)) | |
1326 | printf("All supported\n"); | |
1327 | else | |
1328 | printf("not supported\n"); | |
1329 | getinfo_super_imsm(st, &info, NULL); | |
1330 | fname_from_uuid(st, &info, nbuf, ':'); | |
1331 | printf(" UUID : %s\n", nbuf + 5); | |
1332 | sum = __le32_to_cpu(mpb->check_sum); | |
1333 | printf(" Checksum : %08x %s\n", sum, | |
1334 | __gen_imsm_checksum(mpb) == sum ? "correct" : "incorrect"); | |
1335 | printf(" MPB Sectors : %d\n", mpb_sectors(mpb)); | |
1336 | printf(" Disks : %d\n", mpb->num_disks); | |
1337 | printf(" RAID Devices : %d\n", mpb->num_raid_devs); | |
1338 | print_imsm_disk(__get_imsm_disk(mpb, super->disks->index), super->disks->index, reserved); | |
1339 | if (super->bbm_log) { | |
1340 | struct bbm_log *log = super->bbm_log; | |
1341 | ||
1342 | printf("\n"); | |
1343 | printf("Bad Block Management Log:\n"); | |
1344 | printf(" Log Size : %d\n", __le32_to_cpu(mpb->bbm_log_size)); | |
1345 | printf(" Signature : %x\n", __le32_to_cpu(log->signature)); | |
1346 | printf(" Entry Count : %d\n", __le32_to_cpu(log->entry_count)); | |
1347 | printf(" Spare Blocks : %d\n", __le32_to_cpu(log->reserved_spare_block_count)); | |
1348 | printf(" First Spare : %llx\n", | |
1349 | (unsigned long long) __le64_to_cpu(log->first_spare_lba)); | |
1350 | } | |
1351 | for (i = 0; i < mpb->num_raid_devs; i++) { | |
1352 | struct mdinfo info; | |
1353 | struct imsm_dev *dev = __get_imsm_dev(mpb, i); | |
1354 | ||
1355 | super->current_vol = i; | |
1356 | getinfo_super_imsm(st, &info, NULL); | |
1357 | fname_from_uuid(st, &info, nbuf, ':'); | |
1358 | print_imsm_dev(super, dev, nbuf + 5, super->disks->index); | |
1359 | } | |
1360 | for (i = 0; i < mpb->num_disks; i++) { | |
1361 | if (i == super->disks->index) | |
1362 | continue; | |
1363 | print_imsm_disk(__get_imsm_disk(mpb, i), i, reserved); | |
1364 | } | |
1365 | ||
1366 | for (dl = super->disks; dl; dl = dl->next) | |
1367 | if (dl->index == -1) | |
1368 | print_imsm_disk(&dl->disk, -1, reserved); | |
1369 | ||
1370 | examine_migr_rec_imsm(super); | |
1371 | } | |
1372 | ||
1373 | static void brief_examine_super_imsm(struct supertype *st, int verbose) | |
1374 | { | |
1375 | /* We just write a generic IMSM ARRAY entry */ | |
1376 | struct mdinfo info; | |
1377 | char nbuf[64]; | |
1378 | struct intel_super *super = st->sb; | |
1379 | ||
1380 | if (!super->anchor->num_raid_devs) { | |
1381 | printf("ARRAY metadata=imsm\n"); | |
1382 | return; | |
1383 | } | |
1384 | ||
1385 | getinfo_super_imsm(st, &info, NULL); | |
1386 | fname_from_uuid(st, &info, nbuf, ':'); | |
1387 | printf("ARRAY metadata=imsm UUID=%s\n", nbuf + 5); | |
1388 | } | |
1389 | ||
1390 | static void brief_examine_subarrays_imsm(struct supertype *st, int verbose) | |
1391 | { | |
1392 | /* We just write a generic IMSM ARRAY entry */ | |
1393 | struct mdinfo info; | |
1394 | char nbuf[64]; | |
1395 | char nbuf1[64]; | |
1396 | struct intel_super *super = st->sb; | |
1397 | int i; | |
1398 | ||
1399 | if (!super->anchor->num_raid_devs) | |
1400 | return; | |
1401 | ||
1402 | getinfo_super_imsm(st, &info, NULL); | |
1403 | fname_from_uuid(st, &info, nbuf, ':'); | |
1404 | for (i = 0; i < super->anchor->num_raid_devs; i++) { | |
1405 | struct imsm_dev *dev = get_imsm_dev(super, i); | |
1406 | ||
1407 | super->current_vol = i; | |
1408 | getinfo_super_imsm(st, &info, NULL); | |
1409 | fname_from_uuid(st, &info, nbuf1, ':'); | |
1410 | printf("ARRAY /dev/md/%.16s container=%s member=%d UUID=%s\n", | |
1411 | dev->volume, nbuf + 5, i, nbuf1 + 5); | |
1412 | } | |
1413 | } | |
1414 | ||
1415 | static void export_examine_super_imsm(struct supertype *st) | |
1416 | { | |
1417 | struct intel_super *super = st->sb; | |
1418 | struct imsm_super *mpb = super->anchor; | |
1419 | struct mdinfo info; | |
1420 | char nbuf[64]; | |
1421 | ||
1422 | getinfo_super_imsm(st, &info, NULL); | |
1423 | fname_from_uuid(st, &info, nbuf, ':'); | |
1424 | printf("MD_METADATA=imsm\n"); | |
1425 | printf("MD_LEVEL=container\n"); | |
1426 | printf("MD_UUID=%s\n", nbuf+5); | |
1427 | printf("MD_DEVICES=%u\n", mpb->num_disks); | |
1428 | } | |
1429 | ||
1430 | static void detail_super_imsm(struct supertype *st, char *homehost) | |
1431 | { | |
1432 | struct mdinfo info; | |
1433 | char nbuf[64]; | |
1434 | ||
1435 | getinfo_super_imsm(st, &info, NULL); | |
1436 | fname_from_uuid(st, &info, nbuf, ':'); | |
1437 | printf("\n UUID : %s\n", nbuf + 5); | |
1438 | } | |
1439 | ||
1440 | static void brief_detail_super_imsm(struct supertype *st) | |
1441 | { | |
1442 | struct mdinfo info; | |
1443 | char nbuf[64]; | |
1444 | getinfo_super_imsm(st, &info, NULL); | |
1445 | fname_from_uuid(st, &info, nbuf, ':'); | |
1446 | printf(" UUID=%s", nbuf + 5); | |
1447 | } | |
1448 | ||
1449 | static int imsm_read_serial(int fd, char *devname, __u8 *serial); | |
1450 | static void fd2devname(int fd, char *name); | |
1451 | ||
1452 | static int ahci_enumerate_ports(const char *hba_path, int port_count, int host_base, int verbose) | |
1453 | { | |
1454 | /* dump an unsorted list of devices attached to AHCI Intel storage | |
1455 | * controller, as well as non-connected ports | |
1456 | */ | |
1457 | int hba_len = strlen(hba_path) + 1; | |
1458 | struct dirent *ent; | |
1459 | DIR *dir; | |
1460 | char *path = NULL; | |
1461 | int err = 0; | |
1462 | unsigned long port_mask = (1 << port_count) - 1; | |
1463 | ||
1464 | if (port_count > (int)sizeof(port_mask) * 8) { | |
1465 | if (verbose) | |
1466 | fprintf(stderr, Name ": port_count %d out of range\n", port_count); | |
1467 | return 2; | |
1468 | } | |
1469 | ||
1470 | /* scroll through /sys/dev/block looking for devices attached to | |
1471 | * this hba | |
1472 | */ | |
1473 | dir = opendir("/sys/dev/block"); | |
1474 | for (ent = dir ? readdir(dir) : NULL; ent; ent = readdir(dir)) { | |
1475 | int fd; | |
1476 | char model[64]; | |
1477 | char vendor[64]; | |
1478 | char buf[1024]; | |
1479 | int major, minor; | |
1480 | char *device; | |
1481 | char *c; | |
1482 | int port; | |
1483 | int type; | |
1484 | ||
1485 | if (sscanf(ent->d_name, "%d:%d", &major, &minor) != 2) | |
1486 | continue; | |
1487 | path = devt_to_devpath(makedev(major, minor)); | |
1488 | if (!path) | |
1489 | continue; | |
1490 | if (!path_attached_to_hba(path, hba_path)) { | |
1491 | free(path); | |
1492 | path = NULL; | |
1493 | continue; | |
1494 | } | |
1495 | ||
1496 | /* retrieve the scsi device type */ | |
1497 | if (asprintf(&device, "/sys/dev/block/%d:%d/device/xxxxxxx", major, minor) < 0) { | |
1498 | if (verbose) | |
1499 | fprintf(stderr, Name ": failed to allocate 'device'\n"); | |
1500 | err = 2; | |
1501 | break; | |
1502 | } | |
1503 | sprintf(device, "/sys/dev/block/%d:%d/device/type", major, minor); | |
1504 | if (load_sys(device, buf) != 0) { | |
1505 | if (verbose) | |
1506 | fprintf(stderr, Name ": failed to read device type for %s\n", | |
1507 | path); | |
1508 | err = 2; | |
1509 | free(device); | |
1510 | break; | |
1511 | } | |
1512 | type = strtoul(buf, NULL, 10); | |
1513 | ||
1514 | /* if it's not a disk print the vendor and model */ | |
1515 | if (!(type == 0 || type == 7 || type == 14)) { | |
1516 | vendor[0] = '\0'; | |
1517 | model[0] = '\0'; | |
1518 | sprintf(device, "/sys/dev/block/%d:%d/device/vendor", major, minor); | |
1519 | if (load_sys(device, buf) == 0) { | |
1520 | strncpy(vendor, buf, sizeof(vendor)); | |
1521 | vendor[sizeof(vendor) - 1] = '\0'; | |
1522 | c = (char *) &vendor[sizeof(vendor) - 1]; | |
1523 | while (isspace(*c) || *c == '\0') | |
1524 | *c-- = '\0'; | |
1525 | ||
1526 | } | |
1527 | sprintf(device, "/sys/dev/block/%d:%d/device/model", major, minor); | |
1528 | if (load_sys(device, buf) == 0) { | |
1529 | strncpy(model, buf, sizeof(model)); | |
1530 | model[sizeof(model) - 1] = '\0'; | |
1531 | c = (char *) &model[sizeof(model) - 1]; | |
1532 | while (isspace(*c) || *c == '\0') | |
1533 | *c-- = '\0'; | |
1534 | } | |
1535 | ||
1536 | if (vendor[0] && model[0]) | |
1537 | sprintf(buf, "%.64s %.64s", vendor, model); | |
1538 | else | |
1539 | switch (type) { /* numbers from hald/linux/device.c */ | |
1540 | case 1: sprintf(buf, "tape"); break; | |
1541 | case 2: sprintf(buf, "printer"); break; | |
1542 | case 3: sprintf(buf, "processor"); break; | |
1543 | case 4: | |
1544 | case 5: sprintf(buf, "cdrom"); break; | |
1545 | case 6: sprintf(buf, "scanner"); break; | |
1546 | case 8: sprintf(buf, "media_changer"); break; | |
1547 | case 9: sprintf(buf, "comm"); break; | |
1548 | case 12: sprintf(buf, "raid"); break; | |
1549 | default: sprintf(buf, "unknown"); | |
1550 | } | |
1551 | } else | |
1552 | buf[0] = '\0'; | |
1553 | free(device); | |
1554 | ||
1555 | /* chop device path to 'host%d' and calculate the port number */ | |
1556 | c = strchr(&path[hba_len], '/'); | |
1557 | if (!c) { | |
1558 | if (verbose) | |
1559 | fprintf(stderr, Name ": %s - invalid path name\n", path + hba_len); | |
1560 | err = 2; | |
1561 | break; | |
1562 | } | |
1563 | *c = '\0'; | |
1564 | if (sscanf(&path[hba_len], "host%d", &port) == 1) | |
1565 | port -= host_base; | |
1566 | else { | |
1567 | if (verbose) { | |
1568 | *c = '/'; /* repair the full string */ | |
1569 | fprintf(stderr, Name ": failed to determine port number for %s\n", | |
1570 | path); | |
1571 | } | |
1572 | err = 2; | |
1573 | break; | |
1574 | } | |
1575 | ||
1576 | /* mark this port as used */ | |
1577 | port_mask &= ~(1 << port); | |
1578 | ||
1579 | /* print out the device information */ | |
1580 | if (buf[0]) { | |
1581 | printf(" Port%d : - non-disk device (%s) -\n", port, buf); | |
1582 | continue; | |
1583 | } | |
1584 | ||
1585 | fd = dev_open(ent->d_name, O_RDONLY); | |
1586 | if (fd < 0) | |
1587 | printf(" Port%d : - disk info unavailable -\n", port); | |
1588 | else { | |
1589 | fd2devname(fd, buf); | |
1590 | printf(" Port%d : %s", port, buf); | |
1591 | if (imsm_read_serial(fd, NULL, (__u8 *) buf) == 0) | |
1592 | printf(" (%.*s)\n", MAX_RAID_SERIAL_LEN, buf); | |
1593 | else | |
1594 | printf(" ()\n"); | |
1595 | close(fd); | |
1596 | } | |
1597 | free(path); | |
1598 | path = NULL; | |
1599 | } | |
1600 | if (path) | |
1601 | free(path); | |
1602 | if (dir) | |
1603 | closedir(dir); | |
1604 | if (err == 0) { | |
1605 | int i; | |
1606 | ||
1607 | for (i = 0; i < port_count; i++) | |
1608 | if (port_mask & (1 << i)) | |
1609 | printf(" Port%d : - no device attached -\n", i); | |
1610 | } | |
1611 | ||
1612 | return err; | |
1613 | } | |
1614 | ||
1615 | static void print_found_intel_controllers(struct sys_dev *elem) | |
1616 | { | |
1617 | for (; elem; elem = elem->next) { | |
1618 | fprintf(stderr, Name ": found Intel(R) "); | |
1619 | if (elem->type == SYS_DEV_SATA) | |
1620 | fprintf(stderr, "SATA "); | |
1621 | else if (elem->type == SYS_DEV_SAS) | |
1622 | fprintf(stderr, "SAS "); | |
1623 | fprintf(stderr, "RAID controller"); | |
1624 | if (elem->pci_id) | |
1625 | fprintf(stderr, " at %s", elem->pci_id); | |
1626 | fprintf(stderr, ".\n"); | |
1627 | } | |
1628 | fflush(stderr); | |
1629 | } | |
1630 | ||
1631 | static int ahci_get_port_count(const char *hba_path, int *port_count) | |
1632 | { | |
1633 | struct dirent *ent; | |
1634 | DIR *dir; | |
1635 | int host_base = -1; | |
1636 | ||
1637 | *port_count = 0; | |
1638 | if ((dir = opendir(hba_path)) == NULL) | |
1639 | return -1; | |
1640 | ||
1641 | for (ent = readdir(dir); ent; ent = readdir(dir)) { | |
1642 | int host; | |
1643 | ||
1644 | if (sscanf(ent->d_name, "host%d", &host) != 1) | |
1645 | continue; | |
1646 | if (*port_count == 0) | |
1647 | host_base = host; | |
1648 | else if (host < host_base) | |
1649 | host_base = host; | |
1650 | ||
1651 | if (host + 1 > *port_count + host_base) | |
1652 | *port_count = host + 1 - host_base; | |
1653 | } | |
1654 | closedir(dir); | |
1655 | return host_base; | |
1656 | } | |
1657 | ||
1658 | static void print_imsm_capability(const struct imsm_orom *orom) | |
1659 | { | |
1660 | printf(" Platform : Intel(R) Matrix Storage Manager\n"); | |
1661 | printf(" Version : %d.%d.%d.%d\n", orom->major_ver, orom->minor_ver, | |
1662 | orom->hotfix_ver, orom->build); | |
1663 | printf(" RAID Levels :%s%s%s%s%s\n", | |
1664 | imsm_orom_has_raid0(orom) ? " raid0" : "", | |
1665 | imsm_orom_has_raid1(orom) ? " raid1" : "", | |
1666 | imsm_orom_has_raid1e(orom) ? " raid1e" : "", | |
1667 | imsm_orom_has_raid10(orom) ? " raid10" : "", | |
1668 | imsm_orom_has_raid5(orom) ? " raid5" : ""); | |
1669 | printf(" Chunk Sizes :%s%s%s%s%s%s%s%s%s%s%s%s%s%s%s%s\n", | |
1670 | imsm_orom_has_chunk(orom, 2) ? " 2k" : "", | |
1671 | imsm_orom_has_chunk(orom, 4) ? " 4k" : "", | |
1672 | imsm_orom_has_chunk(orom, 8) ? " 8k" : "", | |
1673 | imsm_orom_has_chunk(orom, 16) ? " 16k" : "", | |
1674 | imsm_orom_has_chunk(orom, 32) ? " 32k" : "", | |
1675 | imsm_orom_has_chunk(orom, 64) ? " 64k" : "", | |
1676 | imsm_orom_has_chunk(orom, 128) ? " 128k" : "", | |
1677 | imsm_orom_has_chunk(orom, 256) ? " 256k" : "", | |
1678 | imsm_orom_has_chunk(orom, 512) ? " 512k" : "", | |
1679 | imsm_orom_has_chunk(orom, 1024*1) ? " 1M" : "", | |
1680 | imsm_orom_has_chunk(orom, 1024*2) ? " 2M" : "", | |
1681 | imsm_orom_has_chunk(orom, 1024*4) ? " 4M" : "", | |
1682 | imsm_orom_has_chunk(orom, 1024*8) ? " 8M" : "", | |
1683 | imsm_orom_has_chunk(orom, 1024*16) ? " 16M" : "", | |
1684 | imsm_orom_has_chunk(orom, 1024*32) ? " 32M" : "", | |
1685 | imsm_orom_has_chunk(orom, 1024*64) ? " 64M" : ""); | |
1686 | printf(" Max Disks : %d\n", orom->tds); | |
1687 | printf(" Max Volumes : %d\n", orom->vpa); | |
1688 | return; | |
1689 | } | |
1690 | ||
1691 | static int detail_platform_imsm(int verbose, int enumerate_only) | |
1692 | { | |
1693 | /* There are two components to imsm platform support, the ahci SATA | |
1694 | * controller and the option-rom. To find the SATA controller we | |
1695 | * simply look in /sys/bus/pci/drivers/ahci to see if an ahci | |
1696 | * controller with the Intel vendor id is present. This approach | |
1697 | * allows mdadm to leverage the kernel's ahci detection logic, with the | |
1698 | * caveat that if ahci.ko is not loaded mdadm will not be able to | |
1699 | * detect platform raid capabilities. The option-rom resides in a | |
1700 | * platform "Adapter ROM". We scan for its signature to retrieve the | |
1701 | * platform capabilities. If raid support is disabled in the BIOS the | |
1702 | * option-rom capability structure will not be available. | |
1703 | */ | |
1704 | const struct imsm_orom *orom; | |
1705 | struct sys_dev *list, *hba; | |
1706 | int host_base = 0; | |
1707 | int port_count = 0; | |
1708 | int result=0; | |
1709 | ||
1710 | if (enumerate_only) { | |
1711 | if (check_env("IMSM_NO_PLATFORM")) | |
1712 | return 0; | |
1713 | list = find_intel_devices(); | |
1714 | if (!list) | |
1715 | return 2; | |
1716 | for (hba = list; hba; hba = hba->next) { | |
1717 | orom = find_imsm_capability(hba->type); | |
1718 | if (!orom) { | |
1719 | result = 2; | |
1720 | break; | |
1721 | } | |
1722 | } | |
1723 | free_sys_dev(&list); | |
1724 | return result; | |
1725 | } | |
1726 | ||
1727 | list = find_intel_devices(); | |
1728 | if (!list) { | |
1729 | if (verbose) | |
1730 | fprintf(stderr, Name ": no active Intel(R) RAID " | |
1731 | "controller found.\n"); | |
1732 | free_sys_dev(&list); | |
1733 | return 2; | |
1734 | } else if (verbose) | |
1735 | print_found_intel_controllers(list); | |
1736 | ||
1737 | for (hba = list; hba; hba = hba->next) { | |
1738 | orom = find_imsm_capability(hba->type); | |
1739 | if (!orom) | |
1740 | fprintf(stderr, Name ": imsm capabilities not found for controller: %s (type %s)\n", | |
1741 | hba->path, get_sys_dev_type(hba->type)); | |
1742 | else | |
1743 | print_imsm_capability(orom); | |
1744 | } | |
1745 | ||
1746 | for (hba = list; hba; hba = hba->next) { | |
1747 | printf(" I/O Controller : %s (%s)\n", | |
1748 | hba->path, get_sys_dev_type(hba->type)); | |
1749 | ||
1750 | if (hba->type == SYS_DEV_SATA) { | |
1751 | host_base = ahci_get_port_count(hba->path, &port_count); | |
1752 | if (ahci_enumerate_ports(hba->path, port_count, host_base, verbose)) { | |
1753 | if (verbose) | |
1754 | fprintf(stderr, Name ": failed to enumerate " | |
1755 | "ports on SATA controller at %s.", hba->pci_id); | |
1756 | result |= 2; | |
1757 | } | |
1758 | } | |
1759 | } | |
1760 | ||
1761 | free_sys_dev(&list); | |
1762 | return result; | |
1763 | } | |
1764 | #endif | |
1765 | ||
1766 | static int match_home_imsm(struct supertype *st, char *homehost) | |
1767 | { | |
1768 | /* the imsm metadata format does not specify any host | |
1769 | * identification information. We return -1 since we can never | |
1770 | * confirm nor deny whether a given array is "meant" for this | |
1771 | * host. We rely on compare_super and the 'family_num' fields to | |
1772 | * exclude member disks that do not belong, and we rely on | |
1773 | * mdadm.conf to specify the arrays that should be assembled. | |
1774 | * Auto-assembly may still pick up "foreign" arrays. | |
1775 | */ | |
1776 | ||
1777 | return -1; | |
1778 | } | |
1779 | ||
1780 | static void uuid_from_super_imsm(struct supertype *st, int uuid[4]) | |
1781 | { | |
1782 | /* The uuid returned here is used for: | |
1783 | * uuid to put into bitmap file (Create, Grow) | |
1784 | * uuid for backup header when saving critical section (Grow) | |
1785 | * comparing uuids when re-adding a device into an array | |
1786 | * In these cases the uuid required is that of the data-array, | |
1787 | * not the device-set. | |
1788 | * uuid to recognise same set when adding a missing device back | |
1789 | * to an array. This is a uuid for the device-set. | |
1790 | * | |
1791 | * For each of these we can make do with a truncated | |
1792 | * or hashed uuid rather than the original, as long as | |
1793 | * everyone agrees. | |
1794 | * In each case the uuid required is that of the data-array, | |
1795 | * not the device-set. | |
1796 | */ | |
1797 | /* imsm does not track uuid's so we synthesis one using sha1 on | |
1798 | * - The signature (Which is constant for all imsm array, but no matter) | |
1799 | * - the orig_family_num of the container | |
1800 | * - the index number of the volume | |
1801 | * - the 'serial' number of the volume. | |
1802 | * Hopefully these are all constant. | |
1803 | */ | |
1804 | struct intel_super *super = st->sb; | |
1805 | ||
1806 | char buf[20]; | |
1807 | struct sha1_ctx ctx; | |
1808 | struct imsm_dev *dev = NULL; | |
1809 | __u32 family_num; | |
1810 | ||
1811 | /* some mdadm versions failed to set ->orig_family_num, in which | |
1812 | * case fall back to ->family_num. orig_family_num will be | |
1813 | * fixed up with the first metadata update. | |
1814 | */ | |
1815 | family_num = super->anchor->orig_family_num; | |
1816 | if (family_num == 0) | |
1817 | family_num = super->anchor->family_num; | |
1818 | sha1_init_ctx(&ctx); | |
1819 | sha1_process_bytes(super->anchor->sig, MPB_SIG_LEN, &ctx); | |
1820 | sha1_process_bytes(&family_num, sizeof(__u32), &ctx); | |
1821 | if (super->current_vol >= 0) | |
1822 | dev = get_imsm_dev(super, super->current_vol); | |
1823 | if (dev) { | |
1824 | __u32 vol = super->current_vol; | |
1825 | sha1_process_bytes(&vol, sizeof(vol), &ctx); | |
1826 | sha1_process_bytes(dev->volume, MAX_RAID_SERIAL_LEN, &ctx); | |
1827 | } | |
1828 | sha1_finish_ctx(&ctx, buf); | |
1829 | memcpy(uuid, buf, 4*4); | |
1830 | } | |
1831 | ||
1832 | #if 0 | |
1833 | static void | |
1834 | get_imsm_numerical_version(struct imsm_super *mpb, int *m, int *p) | |
1835 | { | |
1836 | __u8 *v = get_imsm_version(mpb); | |
1837 | __u8 *end = mpb->sig + MAX_SIGNATURE_LENGTH; | |
1838 | char major[] = { 0, 0, 0 }; | |
1839 | char minor[] = { 0 ,0, 0 }; | |
1840 | char patch[] = { 0, 0, 0 }; | |
1841 | char *ver_parse[] = { major, minor, patch }; | |
1842 | int i, j; | |
1843 | ||
1844 | i = j = 0; | |
1845 | while (*v != '\0' && v < end) { | |
1846 | if (*v != '.' && j < 2) | |
1847 | ver_parse[i][j++] = *v; | |
1848 | else { | |
1849 | i++; | |
1850 | j = 0; | |
1851 | } | |
1852 | v++; | |
1853 | } | |
1854 | ||
1855 | *m = strtol(minor, NULL, 0); | |
1856 | *p = strtol(patch, NULL, 0); | |
1857 | } | |
1858 | #endif | |
1859 | ||
1860 | static __u32 migr_strip_blocks_resync(struct imsm_dev *dev) | |
1861 | { | |
1862 | /* migr_strip_size when repairing or initializing parity */ | |
1863 | struct imsm_map *map = get_imsm_map(dev, 0); | |
1864 | __u32 chunk = __le32_to_cpu(map->blocks_per_strip); | |
1865 | ||
1866 | switch (get_imsm_raid_level(map)) { | |
1867 | case 5: | |
1868 | case 10: | |
1869 | return chunk; | |
1870 | default: | |
1871 | return 128*1024 >> 9; | |
1872 | } | |
1873 | } | |
1874 | ||
1875 | static __u32 migr_strip_blocks_rebuild(struct imsm_dev *dev) | |
1876 | { | |
1877 | /* migr_strip_size when rebuilding a degraded disk, no idea why | |
1878 | * this is different than migr_strip_size_resync(), but it's good | |
1879 | * to be compatible | |
1880 | */ | |
1881 | struct imsm_map *map = get_imsm_map(dev, 1); | |
1882 | __u32 chunk = __le32_to_cpu(map->blocks_per_strip); | |
1883 | ||
1884 | switch (get_imsm_raid_level(map)) { | |
1885 | case 1: | |
1886 | case 10: | |
1887 | if (map->num_members % map->num_domains == 0) | |
1888 | return 128*1024 >> 9; | |
1889 | else | |
1890 | return chunk; | |
1891 | case 5: | |
1892 | return max((__u32) 64*1024 >> 9, chunk); | |
1893 | default: | |
1894 | return 128*1024 >> 9; | |
1895 | } | |
1896 | } | |
1897 | ||
1898 | static __u32 num_stripes_per_unit_resync(struct imsm_dev *dev) | |
1899 | { | |
1900 | struct imsm_map *lo = get_imsm_map(dev, 0); | |
1901 | struct imsm_map *hi = get_imsm_map(dev, 1); | |
1902 | __u32 lo_chunk = __le32_to_cpu(lo->blocks_per_strip); | |
1903 | __u32 hi_chunk = __le32_to_cpu(hi->blocks_per_strip); | |
1904 | ||
1905 | return max((__u32) 1, hi_chunk / lo_chunk); | |
1906 | } | |
1907 | ||
1908 | static __u32 num_stripes_per_unit_rebuild(struct imsm_dev *dev) | |
1909 | { | |
1910 | struct imsm_map *lo = get_imsm_map(dev, 0); | |
1911 | int level = get_imsm_raid_level(lo); | |
1912 | ||
1913 | if (level == 1 || level == 10) { | |
1914 | struct imsm_map *hi = get_imsm_map(dev, 1); | |
1915 | ||
1916 | return hi->num_domains; | |
1917 | } else | |
1918 | return num_stripes_per_unit_resync(dev); | |
1919 | } | |
1920 | ||
1921 | static __u8 imsm_num_data_members(struct imsm_dev *dev, int second_map) | |
1922 | { | |
1923 | /* named 'imsm_' because raid0, raid1 and raid10 | |
1924 | * counter-intuitively have the same number of data disks | |
1925 | */ | |
1926 | struct imsm_map *map = get_imsm_map(dev, second_map); | |
1927 | ||
1928 | switch (get_imsm_raid_level(map)) { | |
1929 | case 0: | |
1930 | case 1: | |
1931 | case 10: | |
1932 | return map->num_members; | |
1933 | case 5: | |
1934 | return map->num_members - 1; | |
1935 | default: | |
1936 | dprintf("%s: unsupported raid level\n", __func__); | |
1937 | return 0; | |
1938 | } | |
1939 | } | |
1940 | ||
1941 | static __u32 parity_segment_depth(struct imsm_dev *dev) | |
1942 | { | |
1943 | struct imsm_map *map = get_imsm_map(dev, 0); | |
1944 | __u32 chunk = __le32_to_cpu(map->blocks_per_strip); | |
1945 | ||
1946 | switch(get_imsm_raid_level(map)) { | |
1947 | case 1: | |
1948 | case 10: | |
1949 | return chunk * map->num_domains; | |
1950 | case 5: | |
1951 | return chunk * map->num_members; | |
1952 | default: | |
1953 | return chunk; | |
1954 | } | |
1955 | } | |
1956 | ||
1957 | static __u32 map_migr_block(struct imsm_dev *dev, __u32 block) | |
1958 | { | |
1959 | struct imsm_map *map = get_imsm_map(dev, 1); | |
1960 | __u32 chunk = __le32_to_cpu(map->blocks_per_strip); | |
1961 | __u32 strip = block / chunk; | |
1962 | ||
1963 | switch (get_imsm_raid_level(map)) { | |
1964 | case 1: | |
1965 | case 10: { | |
1966 | __u32 vol_strip = (strip * map->num_domains) + 1; | |
1967 | __u32 vol_stripe = vol_strip / map->num_members; | |
1968 | ||
1969 | return vol_stripe * chunk + block % chunk; | |
1970 | } case 5: { | |
1971 | __u32 stripe = strip / (map->num_members - 1); | |
1972 | ||
1973 | return stripe * chunk + block % chunk; | |
1974 | } | |
1975 | default: | |
1976 | return 0; | |
1977 | } | |
1978 | } | |
1979 | ||
1980 | static __u64 blocks_per_migr_unit(struct intel_super *super, | |
1981 | struct imsm_dev *dev) | |
1982 | { | |
1983 | /* calculate the conversion factor between per member 'blocks' | |
1984 | * (md/{resync,rebuild}_start) and imsm migration units, return | |
1985 | * 0 for the 'not migrating' and 'unsupported migration' cases | |
1986 | */ | |
1987 | if (!dev->vol.migr_state) | |
1988 | return 0; | |
1989 | ||
1990 | switch (migr_type(dev)) { | |
1991 | case MIGR_GEN_MIGR: { | |
1992 | struct migr_record *migr_rec = super->migr_rec; | |
1993 | return __le32_to_cpu(migr_rec->blocks_per_unit); | |
1994 | } | |
1995 | case MIGR_VERIFY: | |
1996 | case MIGR_REPAIR: | |
1997 | case MIGR_INIT: { | |
1998 | struct imsm_map *map = get_imsm_map(dev, 0); | |
1999 | __u32 stripes_per_unit; | |
2000 | __u32 blocks_per_unit; | |
2001 | __u32 parity_depth; | |
2002 | __u32 migr_chunk; | |
2003 | __u32 block_map; | |
2004 | __u32 block_rel; | |
2005 | __u32 segment; | |
2006 | __u32 stripe; | |
2007 | __u8 disks; | |
2008 | ||
2009 | /* yes, this is really the translation of migr_units to | |
2010 | * per-member blocks in the 'resync' case | |
2011 | */ | |
2012 | stripes_per_unit = num_stripes_per_unit_resync(dev); | |
2013 | migr_chunk = migr_strip_blocks_resync(dev); | |
2014 | disks = imsm_num_data_members(dev, 0); | |
2015 | blocks_per_unit = stripes_per_unit * migr_chunk * disks; | |
2016 | stripe = __le16_to_cpu(map->blocks_per_strip) * disks; | |
2017 | segment = blocks_per_unit / stripe; | |
2018 | block_rel = blocks_per_unit - segment * stripe; | |
2019 | parity_depth = parity_segment_depth(dev); | |
2020 | block_map = map_migr_block(dev, block_rel); | |
2021 | return block_map + parity_depth * segment; | |
2022 | } | |
2023 | case MIGR_REBUILD: { | |
2024 | __u32 stripes_per_unit; | |
2025 | __u32 migr_chunk; | |
2026 | ||
2027 | stripes_per_unit = num_stripes_per_unit_rebuild(dev); | |
2028 | migr_chunk = migr_strip_blocks_rebuild(dev); | |
2029 | return migr_chunk * stripes_per_unit; | |
2030 | } | |
2031 | case MIGR_STATE_CHANGE: | |
2032 | default: | |
2033 | return 0; | |
2034 | } | |
2035 | } | |
2036 | ||
2037 | static int imsm_level_to_layout(int level) | |
2038 | { | |
2039 | switch (level) { | |
2040 | case 0: | |
2041 | case 1: | |
2042 | return 0; | |
2043 | case 5: | |
2044 | case 6: | |
2045 | return ALGORITHM_LEFT_ASYMMETRIC; | |
2046 | case 10: | |
2047 | return 0x102; | |
2048 | } | |
2049 | return UnSet; | |
2050 | } | |
2051 | ||
2052 | /******************************************************************************* | |
2053 | * Function: read_imsm_migr_rec | |
2054 | * Description: Function reads imsm migration record from last sector of disk | |
2055 | * Parameters: | |
2056 | * fd : disk descriptor | |
2057 | * super : metadata info | |
2058 | * Returns: | |
2059 | * 0 : success, | |
2060 | * -1 : fail | |
2061 | ******************************************************************************/ | |
2062 | static int read_imsm_migr_rec(int fd, struct intel_super *super) | |
2063 | { | |
2064 | int ret_val = -1; | |
2065 | unsigned long long dsize; | |
2066 | ||
2067 | get_dev_size(fd, NULL, &dsize); | |
2068 | if (lseek64(fd, dsize - 512, SEEK_SET) < 0) { | |
2069 | fprintf(stderr, | |
2070 | Name ": Cannot seek to anchor block: %s\n", | |
2071 | strerror(errno)); | |
2072 | goto out; | |
2073 | } | |
2074 | if (read(fd, super->migr_rec_buf, 512) != 512) { | |
2075 | fprintf(stderr, | |
2076 | Name ": Cannot read migr record block: %s\n", | |
2077 | strerror(errno)); | |
2078 | goto out; | |
2079 | } | |
2080 | ret_val = 0; | |
2081 | ||
2082 | out: | |
2083 | return ret_val; | |
2084 | } | |
2085 | ||
2086 | /******************************************************************************* | |
2087 | * Function: load_imsm_migr_rec | |
2088 | * Description: Function reads imsm migration record (it is stored at the last | |
2089 | * sector of disk) | |
2090 | * Parameters: | |
2091 | * super : imsm internal array info | |
2092 | * info : general array info | |
2093 | * Returns: | |
2094 | * 0 : success | |
2095 | * -1 : fail | |
2096 | ******************************************************************************/ | |
2097 | static int load_imsm_migr_rec(struct intel_super *super, struct mdinfo *info) | |
2098 | { | |
2099 | struct mdinfo *sd; | |
2100 | struct dl *dl = NULL; | |
2101 | char nm[30]; | |
2102 | int retval = -1; | |
2103 | int fd = -1; | |
2104 | ||
2105 | if (info) { | |
2106 | for (sd = info->devs ; sd ; sd = sd->next) { | |
2107 | /* read only from one of the first two slots */ | |
2108 | if ((sd->disk.raid_disk > 1) || | |
2109 | (sd->disk.raid_disk < 0)) | |
2110 | continue; | |
2111 | sprintf(nm, "%d:%d", sd->disk.major, sd->disk.minor); | |
2112 | fd = dev_open(nm, O_RDONLY); | |
2113 | if (fd >= 0) | |
2114 | break; | |
2115 | } | |
2116 | } | |
2117 | if (fd < 0) { | |
2118 | for (dl = super->disks; dl; dl = dl->next) { | |
2119 | /* read only from one of the first two slots */ | |
2120 | if (dl->index > 1) | |
2121 | continue; | |
2122 | sprintf(nm, "%d:%d", dl->major, dl->minor); | |
2123 | fd = dev_open(nm, O_RDONLY); | |
2124 | if (fd >= 0) | |
2125 | break; | |
2126 | } | |
2127 | } | |
2128 | if (fd < 0) | |
2129 | goto out; | |
2130 | retval = read_imsm_migr_rec(fd, super); | |
2131 | ||
2132 | out: | |
2133 | if (fd >= 0) | |
2134 | close(fd); | |
2135 | return retval; | |
2136 | } | |
2137 | ||
2138 | #ifndef MDASSEMBLE | |
2139 | /******************************************************************************* | |
2140 | * function: imsm_create_metadata_checkpoint_update | |
2141 | * Description: It creates update for checkpoint change. | |
2142 | * Parameters: | |
2143 | * super : imsm internal array info | |
2144 | * u : pointer to prepared update | |
2145 | * Returns: | |
2146 | * Uptate length. | |
2147 | * If length is equal to 0, input pointer u contains no update | |
2148 | ******************************************************************************/ | |
2149 | static int imsm_create_metadata_checkpoint_update( | |
2150 | struct intel_super *super, | |
2151 | struct imsm_update_general_migration_checkpoint **u) | |
2152 | { | |
2153 | ||
2154 | int update_memory_size = 0; | |
2155 | ||
2156 | dprintf("imsm_create_metadata_checkpoint_update(enter)\n"); | |
2157 | ||
2158 | if (u == NULL) | |
2159 | return 0; | |
2160 | *u = NULL; | |
2161 | ||
2162 | /* size of all update data without anchor */ | |
2163 | update_memory_size = | |
2164 | sizeof(struct imsm_update_general_migration_checkpoint); | |
2165 | ||
2166 | *u = calloc(1, update_memory_size); | |
2167 | if (*u == NULL) { | |
2168 | dprintf("error: cannot get memory for " | |
2169 | "imsm_create_metadata_checkpoint_update update\n"); | |
2170 | return 0; | |
2171 | } | |
2172 | (*u)->type = update_general_migration_checkpoint; | |
2173 | (*u)->curr_migr_unit = __le32_to_cpu(super->migr_rec->curr_migr_unit); | |
2174 | dprintf("imsm_create_metadata_checkpoint_update: prepared for %u\n", | |
2175 | (*u)->curr_migr_unit); | |
2176 | ||
2177 | return update_memory_size; | |
2178 | } | |
2179 | ||
2180 | ||
2181 | static void imsm_update_metadata_locally(struct supertype *st, | |
2182 | void *buf, int len); | |
2183 | ||
2184 | /******************************************************************************* | |
2185 | * Function: write_imsm_migr_rec | |
2186 | * Description: Function writes imsm migration record | |
2187 | * (at the last sector of disk) | |
2188 | * Parameters: | |
2189 | * super : imsm internal array info | |
2190 | * Returns: | |
2191 | * 0 : success | |
2192 | * -1 : if fail | |
2193 | ******************************************************************************/ | |
2194 | static int write_imsm_migr_rec(struct supertype *st) | |
2195 | { | |
2196 | struct intel_super *super = st->sb; | |
2197 | unsigned long long dsize; | |
2198 | char nm[30]; | |
2199 | int fd = -1; | |
2200 | int retval = -1; | |
2201 | struct dl *sd; | |
2202 | int len; | |
2203 | struct imsm_update_general_migration_checkpoint *u; | |
2204 | ||
2205 | for (sd = super->disks ; sd ; sd = sd->next) { | |
2206 | /* write to 2 first slots only */ | |
2207 | if ((sd->index < 0) || (sd->index > 1)) | |
2208 | continue; | |
2209 | sprintf(nm, "%d:%d", sd->major, sd->minor); | |
2210 | fd = dev_open(nm, O_RDWR); | |
2211 | if (fd < 0) | |
2212 | continue; | |
2213 | get_dev_size(fd, NULL, &dsize); | |
2214 | if (lseek64(fd, dsize - 512, SEEK_SET) < 0) { | |
2215 | fprintf(stderr, | |
2216 | Name ": Cannot seek to anchor block: %s\n", | |
2217 | strerror(errno)); | |
2218 | goto out; | |
2219 | } | |
2220 | if (write(fd, super->migr_rec_buf, 512) != 512) { | |
2221 | fprintf(stderr, | |
2222 | Name ": Cannot write migr record block: %s\n", | |
2223 | strerror(errno)); | |
2224 | goto out; | |
2225 | } | |
2226 | close(fd); | |
2227 | fd = -1; | |
2228 | } | |
2229 | /* update checkpoint information in metadata */ | |
2230 | len = imsm_create_metadata_checkpoint_update(super, &u); | |
2231 | ||
2232 | if (len <= 0) { | |
2233 | dprintf("imsm: Cannot prepare update\n"); | |
2234 | goto out; | |
2235 | } | |
2236 | /* update metadata locally */ | |
2237 | imsm_update_metadata_locally(st, u, len); | |
2238 | /* and possibly remotely */ | |
2239 | if (st->update_tail) { | |
2240 | append_metadata_update(st, u, len); | |
2241 | /* during reshape we do all work inside metadata handler | |
2242 | * manage_reshape(), so metadata update has to be triggered | |
2243 | * insida it | |
2244 | */ | |
2245 | flush_metadata_updates(st); | |
2246 | st->update_tail = &st->updates; | |
2247 | } else | |
2248 | free(u); | |
2249 | ||
2250 | retval = 0; | |
2251 | out: | |
2252 | if (fd >= 0) | |
2253 | close(fd); | |
2254 | return retval; | |
2255 | } | |
2256 | #endif /* MDASSEMBLE */ | |
2257 | ||
2258 | /* spare/missing disks activations are not allowe when | |
2259 | * array/container performs reshape operation, because | |
2260 | * all arrays in container works on the same disks set | |
2261 | */ | |
2262 | int imsm_reshape_blocks_arrays_changes(struct intel_super *super) | |
2263 | { | |
2264 | int rv = 0; | |
2265 | struct intel_dev *i_dev; | |
2266 | struct imsm_dev *dev; | |
2267 | ||
2268 | /* check whole container | |
2269 | */ | |
2270 | for (i_dev = super->devlist; i_dev; i_dev = i_dev->next) { | |
2271 | dev = i_dev->dev; | |
2272 | if (is_gen_migration(dev)) { | |
2273 | /* No repair during any migration in container | |
2274 | */ | |
2275 | rv = 1; | |
2276 | break; | |
2277 | } | |
2278 | } | |
2279 | return rv; | |
2280 | } | |
2281 | ||
2282 | static void getinfo_super_imsm_volume(struct supertype *st, struct mdinfo *info, char *dmap) | |
2283 | { | |
2284 | struct intel_super *super = st->sb; | |
2285 | struct migr_record *migr_rec = super->migr_rec; | |
2286 | struct imsm_dev *dev = get_imsm_dev(super, super->current_vol); | |
2287 | struct imsm_map *map = get_imsm_map(dev, 0); | |
2288 | struct imsm_map *prev_map = get_imsm_map(dev, 1); | |
2289 | struct imsm_map *map_to_analyse = map; | |
2290 | struct dl *dl; | |
2291 | char *devname; | |
2292 | unsigned int component_size_alligment; | |
2293 | int map_disks = info->array.raid_disks; | |
2294 | ||
2295 | memset(info, 0, sizeof(*info)); | |
2296 | if (prev_map) | |
2297 | map_to_analyse = prev_map; | |
2298 | ||
2299 | dl = super->current_disk; | |
2300 | ||
2301 | info->container_member = super->current_vol; | |
2302 | info->array.raid_disks = map->num_members; | |
2303 | info->array.level = get_imsm_raid_level(map_to_analyse); | |
2304 | info->array.layout = imsm_level_to_layout(info->array.level); | |
2305 | info->array.md_minor = -1; | |
2306 | info->array.ctime = 0; | |
2307 | info->array.utime = 0; | |
2308 | info->array.chunk_size = | |
2309 | __le16_to_cpu(map_to_analyse->blocks_per_strip) << 9; | |
2310 | info->array.state = !dev->vol.dirty; | |
2311 | info->custom_array_size = __le32_to_cpu(dev->size_high); | |
2312 | info->custom_array_size <<= 32; | |
2313 | info->custom_array_size |= __le32_to_cpu(dev->size_low); | |
2314 | info->recovery_blocked = imsm_reshape_blocks_arrays_changes(st->sb); | |
2315 | ||
2316 | if (is_gen_migration(dev)) { | |
2317 | info->reshape_active = 1; | |
2318 | info->new_level = get_imsm_raid_level(map); | |
2319 | info->new_layout = imsm_level_to_layout(info->new_level); | |
2320 | info->new_chunk = __le16_to_cpu(map->blocks_per_strip) << 9; | |
2321 | info->delta_disks = map->num_members - prev_map->num_members; | |
2322 | if (info->delta_disks) { | |
2323 | /* this needs to be applied to every array | |
2324 | * in the container. | |
2325 | */ | |
2326 | info->reshape_active = CONTAINER_RESHAPE; | |
2327 | } | |
2328 | /* We shape information that we give to md might have to be | |
2329 | * modify to cope with md's requirement for reshaping arrays. | |
2330 | * For example, when reshaping a RAID0, md requires it to be | |
2331 | * presented as a degraded RAID4. | |
2332 | * Also if a RAID0 is migrating to a RAID5 we need to specify | |
2333 | * the array as already being RAID5, but the 'before' layout | |
2334 | * is a RAID4-like layout. | |
2335 | */ | |
2336 | switch (info->array.level) { | |
2337 | case 0: | |
2338 | switch(info->new_level) { | |
2339 | case 0: | |
2340 | /* conversion is happening as RAID4 */ | |
2341 | info->array.level = 4; | |
2342 | info->array.raid_disks += 1; | |
2343 | break; | |
2344 | case 5: | |
2345 | /* conversion is happening as RAID5 */ | |
2346 | info->array.level = 5; | |
2347 | info->array.layout = ALGORITHM_PARITY_N; | |
2348 | info->delta_disks -= 1; | |
2349 | break; | |
2350 | default: | |
2351 | /* FIXME error message */ | |
2352 | info->array.level = UnSet; | |
2353 | break; | |
2354 | } | |
2355 | break; | |
2356 | } | |
2357 | } else { | |
2358 | info->new_level = UnSet; | |
2359 | info->new_layout = UnSet; | |
2360 | info->new_chunk = info->array.chunk_size; | |
2361 | info->delta_disks = 0; | |
2362 | } | |
2363 | ||
2364 | if (dl) { | |
2365 | info->disk.major = dl->major; | |
2366 | info->disk.minor = dl->minor; | |
2367 | info->disk.number = dl->index; | |
2368 | info->disk.raid_disk = get_imsm_disk_slot(map_to_analyse, | |
2369 | dl->index); | |
2370 | } | |
2371 | ||
2372 | info->data_offset = __le32_to_cpu(map_to_analyse->pba_of_lba0); | |
2373 | info->component_size = | |
2374 | __le32_to_cpu(map_to_analyse->blocks_per_member); | |
2375 | ||
2376 | /* check component size aligment | |
2377 | */ | |
2378 | component_size_alligment = | |
2379 | info->component_size % (info->array.chunk_size/512); | |
2380 | ||
2381 | if (component_size_alligment && | |
2382 | (info->array.level != 1) && (info->array.level != UnSet)) { | |
2383 | dprintf("imsm: reported component size alligned from %llu ", | |
2384 | info->component_size); | |
2385 | info->component_size -= component_size_alligment; | |
2386 | dprintf("to %llu (%i).\n", | |
2387 | info->component_size, component_size_alligment); | |
2388 | } | |
2389 | ||
2390 | memset(info->uuid, 0, sizeof(info->uuid)); | |
2391 | info->recovery_start = MaxSector; | |
2392 | ||
2393 | info->reshape_progress = 0; | |
2394 | info->resync_start = MaxSector; | |
2395 | if ((map_to_analyse->map_state == IMSM_T_STATE_UNINITIALIZED || | |
2396 | dev->vol.dirty) && | |
2397 | imsm_reshape_blocks_arrays_changes(super) == 0) { | |
2398 | info->resync_start = 0; | |
2399 | } | |
2400 | if (dev->vol.migr_state) { | |
2401 | switch (migr_type(dev)) { | |
2402 | case MIGR_REPAIR: | |
2403 | case MIGR_INIT: { | |
2404 | __u64 blocks_per_unit = blocks_per_migr_unit(super, | |
2405 | dev); | |
2406 | __u64 units = __le32_to_cpu(dev->vol.curr_migr_unit); | |
2407 | ||
2408 | info->resync_start = blocks_per_unit * units; | |
2409 | break; | |
2410 | } | |
2411 | case MIGR_GEN_MIGR: { | |
2412 | __u64 blocks_per_unit = blocks_per_migr_unit(super, | |
2413 | dev); | |
2414 | __u64 units = __le32_to_cpu(migr_rec->curr_migr_unit); | |
2415 | unsigned long long array_blocks; | |
2416 | int used_disks; | |
2417 | ||
2418 | if (__le32_to_cpu(migr_rec->ascending_migr) && | |
2419 | (units < | |
2420 | (__le32_to_cpu(migr_rec->num_migr_units)-1)) && | |
2421 | (super->migr_rec->rec_status == | |
2422 | __cpu_to_le32(UNIT_SRC_IN_CP_AREA))) | |
2423 | units++; | |
2424 | ||
2425 | info->reshape_progress = blocks_per_unit * units; | |
2426 | ||
2427 | dprintf("IMSM: General Migration checkpoint : %llu " | |
2428 | "(%llu) -> read reshape progress : %llu\n", | |
2429 | (unsigned long long)units, | |
2430 | (unsigned long long)blocks_per_unit, | |
2431 | info->reshape_progress); | |
2432 | ||
2433 | used_disks = imsm_num_data_members(dev, 1); | |
2434 | if (used_disks > 0) { | |
2435 | array_blocks = map->blocks_per_member * | |
2436 | used_disks; | |
2437 | /* round array size down to closest MB | |
2438 | */ | |
2439 | info->custom_array_size = (array_blocks | |
2440 | >> SECT_PER_MB_SHIFT) | |
2441 | << SECT_PER_MB_SHIFT; | |
2442 | } | |
2443 | } | |
2444 | case MIGR_VERIFY: | |
2445 | /* we could emulate the checkpointing of | |
2446 | * 'sync_action=check' migrations, but for now | |
2447 | * we just immediately complete them | |
2448 | */ | |
2449 | case MIGR_REBUILD: | |
2450 | /* this is handled by container_content_imsm() */ | |
2451 | case MIGR_STATE_CHANGE: | |
2452 | /* FIXME handle other migrations */ | |
2453 | default: | |
2454 | /* we are not dirty, so... */ | |
2455 | info->resync_start = MaxSector; | |
2456 | } | |
2457 | } | |
2458 | ||
2459 | strncpy(info->name, (char *) dev->volume, MAX_RAID_SERIAL_LEN); | |
2460 | info->name[MAX_RAID_SERIAL_LEN] = 0; | |
2461 | ||
2462 | info->array.major_version = -1; | |
2463 | info->array.minor_version = -2; | |
2464 | devname = devnum2devname(st->container_dev); | |
2465 | *info->text_version = '\0'; | |
2466 | if (devname) | |
2467 | sprintf(info->text_version, "/%s/%d", devname, info->container_member); | |
2468 | free(devname); | |
2469 | info->safe_mode_delay = 4000; /* 4 secs like the Matrix driver */ | |
2470 | uuid_from_super_imsm(st, info->uuid); | |
2471 | ||
2472 | if (dmap) { | |
2473 | int i, j; | |
2474 | for (i=0; i<map_disks; i++) { | |
2475 | dmap[i] = 0; | |
2476 | if (i < info->array.raid_disks) { | |
2477 | struct imsm_disk *dsk; | |
2478 | j = get_imsm_disk_idx(dev, i, -1); | |
2479 | dsk = get_imsm_disk(super, j); | |
2480 | if (dsk && (dsk->status & CONFIGURED_DISK)) | |
2481 | dmap[i] = 1; | |
2482 | } | |
2483 | } | |
2484 | } | |
2485 | } | |
2486 | ||
2487 | static __u8 imsm_check_degraded(struct intel_super *super, struct imsm_dev *dev, | |
2488 | int failed, int look_in_map); | |
2489 | ||
2490 | static int imsm_count_failed(struct intel_super *super, struct imsm_dev *dev, | |
2491 | int look_in_map); | |
2492 | ||
2493 | static void manage_second_map(struct intel_super *super, struct imsm_dev *dev) | |
2494 | { | |
2495 | if (is_gen_migration(dev)) { | |
2496 | int failed; | |
2497 | __u8 map_state; | |
2498 | struct imsm_map *map2 = get_imsm_map(dev, MAP_1); | |
2499 | ||
2500 | failed = imsm_count_failed(super, dev, MAP_1); | |
2501 | map_state = imsm_check_degraded(super, dev, failed, | |
2502 | MAP_1); | |
2503 | if (map2->map_state != map_state) { | |
2504 | map2->map_state = map_state; | |
2505 | super->updates_pending++; | |
2506 | } | |
2507 | } | |
2508 | } | |
2509 | ||
2510 | static struct imsm_disk *get_imsm_missing(struct intel_super *super, __u8 index) | |
2511 | { | |
2512 | struct dl *d; | |
2513 | ||
2514 | for (d = super->missing; d; d = d->next) | |
2515 | if (d->index == index) | |
2516 | return &d->disk; | |
2517 | return NULL; | |
2518 | } | |
2519 | ||
2520 | static void getinfo_super_imsm(struct supertype *st, struct mdinfo *info, char *map) | |
2521 | { | |
2522 | struct intel_super *super = st->sb; | |
2523 | struct imsm_disk *disk; | |
2524 | int map_disks = info->array.raid_disks; | |
2525 | int max_enough = -1; | |
2526 | int i; | |
2527 | struct imsm_super *mpb; | |
2528 | ||
2529 | if (super->current_vol >= 0) { | |
2530 | getinfo_super_imsm_volume(st, info, map); | |
2531 | return; | |
2532 | } | |
2533 | memset(info, 0, sizeof(*info)); | |
2534 | ||
2535 | /* Set raid_disks to zero so that Assemble will always pull in valid | |
2536 | * spares | |
2537 | */ | |
2538 | info->array.raid_disks = 0; | |
2539 | info->array.level = LEVEL_CONTAINER; | |
2540 | info->array.layout = 0; | |
2541 | info->array.md_minor = -1; | |
2542 | info->array.ctime = 0; /* N/A for imsm */ | |
2543 | info->array.utime = 0; | |
2544 | info->array.chunk_size = 0; | |
2545 | ||
2546 | info->disk.major = 0; | |
2547 | info->disk.minor = 0; | |
2548 | info->disk.raid_disk = -1; | |
2549 | info->reshape_active = 0; | |
2550 | info->array.major_version = -1; | |
2551 | info->array.minor_version = -2; | |
2552 | strcpy(info->text_version, "imsm"); | |
2553 | info->safe_mode_delay = 0; | |
2554 | info->disk.number = -1; | |
2555 | info->disk.state = 0; | |
2556 | info->name[0] = 0; | |
2557 | info->recovery_start = MaxSector; | |
2558 | info->recovery_blocked = imsm_reshape_blocks_arrays_changes(st->sb); | |
2559 | ||
2560 | /* do we have the all the insync disks that we expect? */ | |
2561 | mpb = super->anchor; | |
2562 | ||
2563 | for (i = 0; i < mpb->num_raid_devs; i++) { | |
2564 | struct imsm_dev *dev = get_imsm_dev(super, i); | |
2565 | int failed, enough, j, missing = 0; | |
2566 | struct imsm_map *map; | |
2567 | __u8 state; | |
2568 | ||
2569 | failed = imsm_count_failed(super, dev, MAP_0); | |
2570 | state = imsm_check_degraded(super, dev, failed, MAP_0); | |
2571 | map = get_imsm_map(dev, 0); | |
2572 | ||
2573 | /* any newly missing disks? | |
2574 | * (catches single-degraded vs double-degraded) | |
2575 | */ | |
2576 | for (j = 0; j < map->num_members; j++) { | |
2577 | __u32 ord = get_imsm_ord_tbl_ent(dev, j, 0); | |
2578 | __u32 idx = ord_to_idx(ord); | |
2579 | ||
2580 | if (!(ord & IMSM_ORD_REBUILD) && | |
2581 | get_imsm_missing(super, idx)) { | |
2582 | missing = 1; | |
2583 | break; | |
2584 | } | |
2585 | } | |
2586 | ||
2587 | if (state == IMSM_T_STATE_FAILED) | |
2588 | enough = -1; | |
2589 | else if (state == IMSM_T_STATE_DEGRADED && | |
2590 | (state != map->map_state || missing)) | |
2591 | enough = 0; | |
2592 | else /* we're normal, or already degraded */ | |
2593 | enough = 1; | |
2594 | ||
2595 | /* in the missing/failed disk case check to see | |
2596 | * if at least one array is runnable | |
2597 | */ | |
2598 | max_enough = max(max_enough, enough); | |
2599 | } | |
2600 | dprintf("%s: enough: %d\n", __func__, max_enough); | |
2601 | info->container_enough = max_enough; | |
2602 | ||
2603 | if (super->disks) { | |
2604 | __u32 reserved = imsm_reserved_sectors(super, super->disks); | |
2605 | ||
2606 | disk = &super->disks->disk; | |
2607 | info->data_offset = __le32_to_cpu(disk->total_blocks) - reserved; | |
2608 | info->component_size = reserved; | |
2609 | info->disk.state = is_configured(disk) ? (1 << MD_DISK_ACTIVE) : 0; | |
2610 | /* we don't change info->disk.raid_disk here because | |
2611 | * this state will be finalized in mdmon after we have | |
2612 | * found the 'most fresh' version of the metadata | |
2613 | */ | |
2614 | info->disk.state |= is_failed(disk) ? (1 << MD_DISK_FAULTY) : 0; | |
2615 | info->disk.state |= is_spare(disk) ? 0 : (1 << MD_DISK_SYNC); | |
2616 | } | |
2617 | ||
2618 | /* only call uuid_from_super_imsm when this disk is part of a populated container, | |
2619 | * ->compare_super may have updated the 'num_raid_devs' field for spares | |
2620 | */ | |
2621 | if (info->disk.state & (1 << MD_DISK_SYNC) || super->anchor->num_raid_devs) | |
2622 | uuid_from_super_imsm(st, info->uuid); | |
2623 | else | |
2624 | memcpy(info->uuid, uuid_zero, sizeof(uuid_zero)); | |
2625 | ||
2626 | /* I don't know how to compute 'map' on imsm, so use safe default */ | |
2627 | if (map) { | |
2628 | int i; | |
2629 | for (i = 0; i < map_disks; i++) | |
2630 | map[i] = 1; | |
2631 | } | |
2632 | ||
2633 | } | |
2634 | ||
2635 | /* allocates memory and fills disk in mdinfo structure | |
2636 | * for each disk in array */ | |
2637 | struct mdinfo *getinfo_super_disks_imsm(struct supertype *st) | |
2638 | { | |
2639 | struct mdinfo *mddev = NULL; | |
2640 | struct intel_super *super = st->sb; | |
2641 | struct imsm_disk *disk; | |
2642 | int count = 0; | |
2643 | struct dl *dl; | |
2644 | if (!super || !super->disks) | |
2645 | return NULL; | |
2646 | dl = super->disks; | |
2647 | mddev = malloc(sizeof(*mddev)); | |
2648 | if (!mddev) { | |
2649 | fprintf(stderr, Name ": Failed to allocate memory.\n"); | |
2650 | return NULL; | |
2651 | } | |
2652 | memset(mddev, 0, sizeof(*mddev)); | |
2653 | while (dl) { | |
2654 | struct mdinfo *tmp; | |
2655 | disk = &dl->disk; | |
2656 | tmp = malloc(sizeof(*tmp)); | |
2657 | if (!tmp) { | |
2658 | fprintf(stderr, Name ": Failed to allocate memory.\n"); | |
2659 | if (mddev) | |
2660 | sysfs_free(mddev); | |
2661 | return NULL; | |
2662 | } | |
2663 | memset(tmp, 0, sizeof(*tmp)); | |
2664 | if (mddev->devs) | |
2665 | tmp->next = mddev->devs; | |
2666 | mddev->devs = tmp; | |
2667 | tmp->disk.number = count++; | |
2668 | tmp->disk.major = dl->major; | |
2669 | tmp->disk.minor = dl->minor; | |
2670 | tmp->disk.state = is_configured(disk) ? | |
2671 | (1 << MD_DISK_ACTIVE) : 0; | |
2672 | tmp->disk.state |= is_failed(disk) ? (1 << MD_DISK_FAULTY) : 0; | |
2673 | tmp->disk.state |= is_spare(disk) ? 0 : (1 << MD_DISK_SYNC); | |
2674 | tmp->disk.raid_disk = -1; | |
2675 | dl = dl->next; | |
2676 | } | |
2677 | return mddev; | |
2678 | } | |
2679 | ||
2680 | static int update_super_imsm(struct supertype *st, struct mdinfo *info, | |
2681 | char *update, char *devname, int verbose, | |
2682 | int uuid_set, char *homehost) | |
2683 | { | |
2684 | /* For 'assemble' and 'force' we need to return non-zero if any | |
2685 | * change was made. For others, the return value is ignored. | |
2686 | * Update options are: | |
2687 | * force-one : This device looks a bit old but needs to be included, | |
2688 | * update age info appropriately. | |
2689 | * assemble: clear any 'faulty' flag to allow this device to | |
2690 | * be assembled. | |
2691 | * force-array: Array is degraded but being forced, mark it clean | |
2692 | * if that will be needed to assemble it. | |
2693 | * | |
2694 | * newdev: not used ???? | |
2695 | * grow: Array has gained a new device - this is currently for | |
2696 | * linear only | |
2697 | * resync: mark as dirty so a resync will happen. | |
2698 | * name: update the name - preserving the homehost | |
2699 | * uuid: Change the uuid of the array to match watch is given | |
2700 | * | |
2701 | * Following are not relevant for this imsm: | |
2702 | * sparc2.2 : update from old dodgey metadata | |
2703 | * super-minor: change the preferred_minor number | |
2704 | * summaries: update redundant counters. | |
2705 | * homehost: update the recorded homehost | |
2706 | * _reshape_progress: record new reshape_progress position. | |
2707 | */ | |
2708 | int rv = 1; | |
2709 | struct intel_super *super = st->sb; | |
2710 | struct imsm_super *mpb; | |
2711 | ||
2712 | /* we can only update container info */ | |
2713 | if (!super || super->current_vol >= 0 || !super->anchor) | |
2714 | return 1; | |
2715 | ||
2716 | mpb = super->anchor; | |
2717 | ||
2718 | if (strcmp(update, "uuid") == 0 && uuid_set && !info->update_private) | |
2719 | rv = -1; | |
2720 | else if (strcmp(update, "uuid") == 0 && uuid_set && info->update_private) { | |
2721 | mpb->orig_family_num = *((__u32 *) info->update_private); | |
2722 | rv = 0; | |
2723 | } else if (strcmp(update, "uuid") == 0) { | |
2724 | __u32 *new_family = malloc(sizeof(*new_family)); | |
2725 | ||
2726 | /* update orig_family_number with the incoming random | |
2727 | * data, report the new effective uuid, and store the | |
2728 | * new orig_family_num for future updates. | |
2729 | */ | |
2730 | if (new_family) { | |
2731 | memcpy(&mpb->orig_family_num, info->uuid, sizeof(__u32)); | |
2732 | uuid_from_super_imsm(st, info->uuid); | |
2733 | *new_family = mpb->orig_family_num; | |
2734 | info->update_private = new_family; | |
2735 | rv = 0; | |
2736 | } | |
2737 | } else if (strcmp(update, "assemble") == 0) | |
2738 | rv = 0; | |
2739 | else | |
2740 | rv = -1; | |
2741 | ||
2742 | /* successful update? recompute checksum */ | |
2743 | if (rv == 0) | |
2744 | mpb->check_sum = __le32_to_cpu(__gen_imsm_checksum(mpb)); | |
2745 | ||
2746 | return rv; | |
2747 | } | |
2748 | ||
2749 | static size_t disks_to_mpb_size(int disks) | |
2750 | { | |
2751 | size_t size; | |
2752 | ||
2753 | size = sizeof(struct imsm_super); | |
2754 | size += (disks - 1) * sizeof(struct imsm_disk); | |
2755 | size += 2 * sizeof(struct imsm_dev); | |
2756 | /* up to 2 maps per raid device (-2 for imsm_maps in imsm_dev */ | |
2757 | size += (4 - 2) * sizeof(struct imsm_map); | |
2758 | /* 4 possible disk_ord_tbl's */ | |
2759 | size += 4 * (disks - 1) * sizeof(__u32); | |
2760 | ||
2761 | return size; | |
2762 | } | |
2763 | ||
2764 | static __u64 avail_size_imsm(struct supertype *st, __u64 devsize) | |
2765 | { | |
2766 | if (devsize < (MPB_SECTOR_CNT + IMSM_RESERVED_SECTORS)) | |
2767 | return 0; | |
2768 | ||
2769 | return devsize - (MPB_SECTOR_CNT + IMSM_RESERVED_SECTORS); | |
2770 | } | |
2771 | ||
2772 | static void free_devlist(struct intel_super *super) | |
2773 | { | |
2774 | struct intel_dev *dv; | |
2775 | ||
2776 | while (super->devlist) { | |
2777 | dv = super->devlist->next; | |
2778 | free(super->devlist->dev); | |
2779 | free(super->devlist); | |
2780 | super->devlist = dv; | |
2781 | } | |
2782 | } | |
2783 | ||
2784 | static void imsm_copy_dev(struct imsm_dev *dest, struct imsm_dev *src) | |
2785 | { | |
2786 | memcpy(dest, src, sizeof_imsm_dev(src, 0)); | |
2787 | } | |
2788 | ||
2789 | static int compare_super_imsm(struct supertype *st, struct supertype *tst) | |
2790 | { | |
2791 | /* | |
2792 | * return: | |
2793 | * 0 same, or first was empty, and second was copied | |
2794 | * 1 second had wrong number | |
2795 | * 2 wrong uuid | |
2796 | * 3 wrong other info | |
2797 | */ | |
2798 | struct intel_super *first = st->sb; | |
2799 | struct intel_super *sec = tst->sb; | |
2800 | ||
2801 | if (!first) { | |
2802 | st->sb = tst->sb; | |
2803 | tst->sb = NULL; | |
2804 | return 0; | |
2805 | } | |
2806 | /* in platform dependent environment test if the disks | |
2807 | * use the same Intel hba | |
2808 | */ | |
2809 | if (!check_env("IMSM_NO_PLATFORM")) { | |
2810 | if (!first->hba || !sec->hba || | |
2811 | (first->hba->type != sec->hba->type)) { | |
2812 | fprintf(stderr, | |
2813 | "HBAs of devices does not match %s != %s\n", | |
2814 | first->hba ? get_sys_dev_type(first->hba->type) : NULL, | |
2815 | sec->hba ? get_sys_dev_type(sec->hba->type) : NULL); | |
2816 | return 3; | |
2817 | } | |
2818 | } | |
2819 | ||
2820 | /* if an anchor does not have num_raid_devs set then it is a free | |
2821 | * floating spare | |
2822 | */ | |
2823 | if (first->anchor->num_raid_devs > 0 && | |
2824 | sec->anchor->num_raid_devs > 0) { | |
2825 | /* Determine if these disks might ever have been | |
2826 | * related. Further disambiguation can only take place | |
2827 | * in load_super_imsm_all | |
2828 | */ | |
2829 | __u32 first_family = first->anchor->orig_family_num; | |
2830 | __u32 sec_family = sec->anchor->orig_family_num; | |
2831 | ||
2832 | if (memcmp(first->anchor->sig, sec->anchor->sig, | |
2833 | MAX_SIGNATURE_LENGTH) != 0) | |
2834 | return 3; | |
2835 | ||
2836 | if (first_family == 0) | |
2837 | first_family = first->anchor->family_num; | |
2838 | if (sec_family == 0) | |
2839 | sec_family = sec->anchor->family_num; | |
2840 | ||
2841 | if (first_family != sec_family) | |
2842 | return 3; | |
2843 | ||
2844 | } | |
2845 | ||
2846 | ||
2847 | /* if 'first' is a spare promote it to a populated mpb with sec's | |
2848 | * family number | |
2849 | */ | |
2850 | if (first->anchor->num_raid_devs == 0 && | |
2851 | sec->anchor->num_raid_devs > 0) { | |
2852 | int i; | |
2853 | struct intel_dev *dv; | |
2854 | struct imsm_dev *dev; | |
2855 | ||
2856 | /* we need to copy raid device info from sec if an allocation | |
2857 | * fails here we don't associate the spare | |
2858 | */ | |
2859 | for (i = 0; i < sec->anchor->num_raid_devs; i++) { | |
2860 | dv = malloc(sizeof(*dv)); | |
2861 | if (!dv) | |
2862 | break; | |
2863 | dev = malloc(sizeof_imsm_dev(get_imsm_dev(sec, i), 1)); | |
2864 | if (!dev) { | |
2865 | free(dv); | |
2866 | break; | |
2867 | } | |
2868 | dv->dev = dev; | |
2869 | dv->index = i; | |
2870 | dv->next = first->devlist; | |
2871 | first->devlist = dv; | |
2872 | } | |
2873 | if (i < sec->anchor->num_raid_devs) { | |
2874 | /* allocation failure */ | |
2875 | free_devlist(first); | |
2876 | fprintf(stderr, "imsm: failed to associate spare\n"); | |
2877 | return 3; | |
2878 | } | |
2879 | first->anchor->num_raid_devs = sec->anchor->num_raid_devs; | |
2880 | first->anchor->orig_family_num = sec->anchor->orig_family_num; | |
2881 | first->anchor->family_num = sec->anchor->family_num; | |
2882 | memcpy(first->anchor->sig, sec->anchor->sig, MAX_SIGNATURE_LENGTH); | |
2883 | for (i = 0; i < sec->anchor->num_raid_devs; i++) | |
2884 | imsm_copy_dev(get_imsm_dev(first, i), get_imsm_dev(sec, i)); | |
2885 | } | |
2886 | ||
2887 | return 0; | |
2888 | } | |
2889 | ||
2890 | static void fd2devname(int fd, char *name) | |
2891 | { | |
2892 | struct stat st; | |
2893 | char path[256]; | |
2894 | char dname[PATH_MAX]; | |
2895 | char *nm; | |
2896 | int rv; | |
2897 | ||
2898 | name[0] = '\0'; | |
2899 | if (fstat(fd, &st) != 0) | |
2900 | return; | |
2901 | sprintf(path, "/sys/dev/block/%d:%d", | |
2902 | major(st.st_rdev), minor(st.st_rdev)); | |
2903 | ||
2904 | rv = readlink(path, dname, sizeof(dname)-1); | |
2905 | if (rv <= 0) | |
2906 | return; | |
2907 | ||
2908 | dname[rv] = '\0'; | |
2909 | nm = strrchr(dname, '/'); | |
2910 | if (nm) { | |
2911 | nm++; | |
2912 | snprintf(name, MAX_RAID_SERIAL_LEN, "/dev/%s", nm); | |
2913 | } | |
2914 | } | |
2915 | ||
2916 | extern int scsi_get_serial(int fd, void *buf, size_t buf_len); | |
2917 | ||
2918 | static int imsm_read_serial(int fd, char *devname, | |
2919 | __u8 serial[MAX_RAID_SERIAL_LEN]) | |
2920 | { | |
2921 | unsigned char scsi_serial[255]; | |
2922 | int rv; | |
2923 | int rsp_len; | |
2924 | int len; | |
2925 | char *dest; | |
2926 | char *src; | |
2927 | char *rsp_buf; | |
2928 | int i; | |
2929 | ||
2930 | memset(scsi_serial, 0, sizeof(scsi_serial)); | |
2931 | ||
2932 | rv = scsi_get_serial(fd, scsi_serial, sizeof(scsi_serial)); | |
2933 | ||
2934 | if (rv && check_env("IMSM_DEVNAME_AS_SERIAL")) { | |
2935 | memset(serial, 0, MAX_RAID_SERIAL_LEN); | |
2936 | fd2devname(fd, (char *) serial); | |
2937 | return 0; | |
2938 | } | |
2939 | ||
2940 | if (rv != 0) { | |
2941 | if (devname) | |
2942 | fprintf(stderr, | |
2943 | Name ": Failed to retrieve serial for %s\n", | |
2944 | devname); | |
2945 | return rv; | |
2946 | } | |
2947 | ||
2948 | rsp_len = scsi_serial[3]; | |
2949 | if (!rsp_len) { | |
2950 | if (devname) | |
2951 | fprintf(stderr, | |
2952 | Name ": Failed to retrieve serial for %s\n", | |
2953 | devname); | |
2954 | return 2; | |
2955 | } | |
2956 | rsp_buf = (char *) &scsi_serial[4]; | |
2957 | ||
2958 | /* trim all whitespace and non-printable characters and convert | |
2959 | * ':' to ';' | |
2960 | */ | |
2961 | for (i = 0, dest = rsp_buf; i < rsp_len; i++) { | |
2962 | src = &rsp_buf[i]; | |
2963 | if (*src > 0x20) { | |
2964 | /* ':' is reserved for use in placeholder serial | |
2965 | * numbers for missing disks | |
2966 | */ | |
2967 | if (*src == ':') | |
2968 | *dest++ = ';'; | |
2969 | else | |
2970 | *dest++ = *src; | |
2971 | } | |
2972 | } | |
2973 | len = dest - rsp_buf; | |
2974 | dest = rsp_buf; | |
2975 | ||
2976 | /* truncate leading characters */ | |
2977 | if (len > MAX_RAID_SERIAL_LEN) { | |
2978 | dest += len - MAX_RAID_SERIAL_LEN; | |
2979 | len = MAX_RAID_SERIAL_LEN; | |
2980 | } | |
2981 | ||
2982 | memset(serial, 0, MAX_RAID_SERIAL_LEN); | |
2983 | memcpy(serial, dest, len); | |
2984 | ||
2985 | return 0; | |
2986 | } | |
2987 | ||
2988 | static int serialcmp(__u8 *s1, __u8 *s2) | |
2989 | { | |
2990 | return strncmp((char *) s1, (char *) s2, MAX_RAID_SERIAL_LEN); | |
2991 | } | |
2992 | ||
2993 | static void serialcpy(__u8 *dest, __u8 *src) | |
2994 | { | |
2995 | strncpy((char *) dest, (char *) src, MAX_RAID_SERIAL_LEN); | |
2996 | } | |
2997 | ||
2998 | static struct dl *serial_to_dl(__u8 *serial, struct intel_super *super) | |
2999 | { | |
3000 | struct dl *dl; | |
3001 | ||
3002 | for (dl = super->disks; dl; dl = dl->next) | |
3003 | if (serialcmp(dl->serial, serial) == 0) | |
3004 | break; | |
3005 | ||
3006 | return dl; | |
3007 | } | |
3008 | ||
3009 | static struct imsm_disk * | |
3010 | __serial_to_disk(__u8 *serial, struct imsm_super *mpb, int *idx) | |
3011 | { | |
3012 | int i; | |
3013 | ||
3014 | for (i = 0; i < mpb->num_disks; i++) { | |
3015 | struct imsm_disk *disk = __get_imsm_disk(mpb, i); | |
3016 | ||
3017 | if (serialcmp(disk->serial, serial) == 0) { | |
3018 | if (idx) | |
3019 | *idx = i; | |
3020 | return disk; | |
3021 | } | |
3022 | } | |
3023 | ||
3024 | return NULL; | |
3025 | } | |
3026 | ||
3027 | static int | |
3028 | load_imsm_disk(int fd, struct intel_super *super, char *devname, int keep_fd) | |
3029 | { | |
3030 | struct imsm_disk *disk; | |
3031 | struct dl *dl; | |
3032 | struct stat stb; | |
3033 | int rv; | |
3034 | char name[40]; | |
3035 | __u8 serial[MAX_RAID_SERIAL_LEN]; | |
3036 | ||
3037 | rv = imsm_read_serial(fd, devname, serial); | |
3038 | ||
3039 | if (rv != 0) | |
3040 | return 2; | |
3041 | ||
3042 | dl = calloc(1, sizeof(*dl)); | |
3043 | if (!dl) { | |
3044 | if (devname) | |
3045 | fprintf(stderr, | |
3046 | Name ": failed to allocate disk buffer for %s\n", | |
3047 | devname); | |
3048 | return 2; | |
3049 | } | |
3050 | ||
3051 | fstat(fd, &stb); | |
3052 | dl->major = major(stb.st_rdev); | |
3053 | dl->minor = minor(stb.st_rdev); | |
3054 | dl->next = super->disks; | |
3055 | dl->fd = keep_fd ? fd : -1; | |
3056 | assert(super->disks == NULL); | |
3057 | super->disks = dl; | |
3058 | serialcpy(dl->serial, serial); | |
3059 | dl->index = -2; | |
3060 | dl->e = NULL; | |
3061 | fd2devname(fd, name); | |
3062 | if (devname) | |
3063 | dl->devname = strdup(devname); | |
3064 | else | |
3065 | dl->devname = strdup(name); | |
3066 | ||
3067 | /* look up this disk's index in the current anchor */ | |
3068 | disk = __serial_to_disk(dl->serial, super->anchor, &dl->index); | |
3069 | if (disk) { | |
3070 | dl->disk = *disk; | |
3071 | /* only set index on disks that are a member of a | |
3072 | * populated contianer, i.e. one with raid_devs | |
3073 | */ | |
3074 | if (is_failed(&dl->disk)) | |
3075 | dl->index = -2; | |
3076 | else if (is_spare(&dl->disk)) | |
3077 | dl->index = -1; | |
3078 | } | |
3079 | ||
3080 | return 0; | |
3081 | } | |
3082 | ||
3083 | #ifndef MDASSEMBLE | |
3084 | /* When migrating map0 contains the 'destination' state while map1 | |
3085 | * contains the current state. When not migrating map0 contains the | |
3086 | * current state. This routine assumes that map[0].map_state is set to | |
3087 | * the current array state before being called. | |
3088 | * | |
3089 | * Migration is indicated by one of the following states | |
3090 | * 1/ Idle (migr_state=0 map0state=normal||unitialized||degraded||failed) | |
3091 | * 2/ Initialize (migr_state=1 migr_type=MIGR_INIT map0state=normal | |
3092 | * map1state=unitialized) | |
3093 | * 3/ Repair (Resync) (migr_state=1 migr_type=MIGR_REPAIR map0state=normal | |
3094 | * map1state=normal) | |
3095 | * 4/ Rebuild (migr_state=1 migr_type=MIGR_REBUILD map0state=normal | |
3096 | * map1state=degraded) | |
3097 | * 5/ Migration (mig_state=1 migr_type=MIGR_GEN_MIGR map0state=normal | |
3098 | * map1state=normal) | |
3099 | */ | |
3100 | static void migrate(struct imsm_dev *dev, struct intel_super *super, | |
3101 | __u8 to_state, int migr_type) | |
3102 | { | |
3103 | struct imsm_map *dest; | |
3104 | struct imsm_map *src = get_imsm_map(dev, 0); | |
3105 | ||
3106 | dev->vol.migr_state = 1; | |
3107 | set_migr_type(dev, migr_type); | |
3108 | dev->vol.curr_migr_unit = 0; | |
3109 | dest = get_imsm_map(dev, 1); | |
3110 | ||
3111 | /* duplicate and then set the target end state in map[0] */ | |
3112 | memcpy(dest, src, sizeof_imsm_map(src)); | |
3113 | if ((migr_type == MIGR_REBUILD) || | |
3114 | (migr_type == MIGR_GEN_MIGR)) { | |
3115 | __u32 ord; | |
3116 | int i; | |
3117 | ||
3118 | for (i = 0; i < src->num_members; i++) { | |
3119 | ord = __le32_to_cpu(src->disk_ord_tbl[i]); | |
3120 | set_imsm_ord_tbl_ent(src, i, ord_to_idx(ord)); | |
3121 | } | |
3122 | } | |
3123 | ||
3124 | if (migr_type == MIGR_GEN_MIGR) | |
3125 | /* Clear migration record */ | |
3126 | memset(super->migr_rec, 0, sizeof(struct migr_record)); | |
3127 | ||
3128 | src->map_state = to_state; | |
3129 | } | |
3130 | ||
3131 | static void end_migration(struct imsm_dev *dev, struct intel_super *super, | |
3132 | __u8 map_state) | |
3133 | { | |
3134 | struct imsm_map *map = get_imsm_map(dev, 0); | |
3135 | struct imsm_map *prev = get_imsm_map(dev, dev->vol.migr_state); | |
3136 | int i, j; | |
3137 | ||
3138 | /* merge any IMSM_ORD_REBUILD bits that were not successfully | |
3139 | * completed in the last migration. | |
3140 | * | |
3141 | * FIXME add support for raid-level-migration | |
3142 | */ | |
3143 | if ((map_state != map->map_state) && (is_gen_migration(dev) == 0) && | |
3144 | (prev->map_state != IMSM_T_STATE_UNINITIALIZED)) { | |
3145 | /* when final map state is other than expected | |
3146 | * merge maps (not for migration) | |
3147 | */ | |
3148 | int failed; | |
3149 | ||
3150 | for (i = 0; i < prev->num_members; i++) | |
3151 | for (j = 0; j < map->num_members; j++) | |
3152 | /* during online capacity expansion | |
3153 | * disks position can be changed | |
3154 | * if takeover is used | |
3155 | */ | |
3156 | if (ord_to_idx(map->disk_ord_tbl[j]) == | |
3157 | ord_to_idx(prev->disk_ord_tbl[i])) { | |
3158 | map->disk_ord_tbl[j] |= | |
3159 | prev->disk_ord_tbl[i]; | |
3160 | break; | |
3161 | } | |
3162 | failed = imsm_count_failed(super, dev, MAP_0); | |
3163 | map_state = imsm_check_degraded(super, dev, failed, MAP_0); | |
3164 | } | |
3165 | ||
3166 | dev->vol.migr_state = 0; | |
3167 | set_migr_type(dev, 0); | |
3168 | dev->vol.curr_migr_unit = 0; | |
3169 | map->map_state = map_state; | |
3170 | } | |
3171 | #endif | |
3172 | ||
3173 | static int parse_raid_devices(struct intel_super *super) | |
3174 | { | |
3175 | int i; | |
3176 | struct imsm_dev *dev_new; | |
3177 | size_t len, len_migr; | |
3178 | size_t max_len = 0; | |
3179 | size_t space_needed = 0; | |
3180 | struct imsm_super *mpb = super->anchor; | |
3181 | ||
3182 | for (i = 0; i < super->anchor->num_raid_devs; i++) { | |
3183 | struct imsm_dev *dev_iter = __get_imsm_dev(super->anchor, i); | |
3184 | struct intel_dev *dv; | |
3185 | ||
3186 | len = sizeof_imsm_dev(dev_iter, 0); | |
3187 | len_migr = sizeof_imsm_dev(dev_iter, 1); | |
3188 | if (len_migr > len) | |
3189 | space_needed += len_migr - len; | |
3190 | ||
3191 | dv = malloc(sizeof(*dv)); | |
3192 | if (!dv) | |
3193 | return 1; | |
3194 | if (max_len < len_migr) | |
3195 | max_len = len_migr; | |
3196 | if (max_len > len_migr) | |
3197 | space_needed += max_len - len_migr; | |
3198 | dev_new = malloc(max_len); | |
3199 | if (!dev_new) { | |
3200 | free(dv); | |
3201 | return 1; | |
3202 | } | |
3203 | imsm_copy_dev(dev_new, dev_iter); | |
3204 | dv->dev = dev_new; | |
3205 | dv->index = i; | |
3206 | dv->next = super->devlist; | |
3207 | super->devlist = dv; | |
3208 | } | |
3209 | ||
3210 | /* ensure that super->buf is large enough when all raid devices | |
3211 | * are migrating | |
3212 | */ | |
3213 | if (__le32_to_cpu(mpb->mpb_size) + space_needed > super->len) { | |
3214 | void *buf; | |
3215 | ||
3216 | len = ROUND_UP(__le32_to_cpu(mpb->mpb_size) + space_needed, 512); | |
3217 | if (posix_memalign(&buf, 512, len) != 0) | |
3218 | return 1; | |
3219 | ||
3220 | memcpy(buf, super->buf, super->len); | |
3221 | memset(buf + super->len, 0, len - super->len); | |
3222 | free(super->buf); | |
3223 | super->buf = buf; | |
3224 | super->len = len; | |
3225 | } | |
3226 | ||
3227 | return 0; | |
3228 | } | |
3229 | ||
3230 | /* retrieve a pointer to the bbm log which starts after all raid devices */ | |
3231 | struct bbm_log *__get_imsm_bbm_log(struct imsm_super *mpb) | |
3232 | { | |
3233 | void *ptr = NULL; | |
3234 | ||
3235 | if (__le32_to_cpu(mpb->bbm_log_size)) { | |
3236 | ptr = mpb; | |
3237 | ptr += mpb->mpb_size - __le32_to_cpu(mpb->bbm_log_size); | |
3238 | } | |
3239 | ||
3240 | return ptr; | |
3241 | } | |
3242 | ||
3243 | /******************************************************************************* | |
3244 | * Function: check_mpb_migr_compatibility | |
3245 | * Description: Function checks for unsupported migration features: | |
3246 | * - migration optimization area (pba_of_lba0) | |
3247 | * - descending reshape (ascending_migr) | |
3248 | * Parameters: | |
3249 | * super : imsm metadata information | |
3250 | * Returns: | |
3251 | * 0 : migration is compatible | |
3252 | * -1 : migration is not compatible | |
3253 | ******************************************************************************/ | |
3254 | int check_mpb_migr_compatibility(struct intel_super *super) | |
3255 | { | |
3256 | struct imsm_map *map0, *map1; | |
3257 | struct migr_record *migr_rec = super->migr_rec; | |
3258 | int i; | |
3259 | ||
3260 | for (i = 0; i < super->anchor->num_raid_devs; i++) { | |
3261 | struct imsm_dev *dev_iter = __get_imsm_dev(super->anchor, i); | |
3262 | ||
3263 | if (dev_iter && | |
3264 | dev_iter->vol.migr_state == 1 && | |
3265 | dev_iter->vol.migr_type == MIGR_GEN_MIGR) { | |
3266 | /* This device is migrating */ | |
3267 | map0 = get_imsm_map(dev_iter, 0); | |
3268 | map1 = get_imsm_map(dev_iter, 1); | |
3269 | if (map0->pba_of_lba0 != map1->pba_of_lba0) | |
3270 | /* migration optimization area was used */ | |
3271 | return -1; | |
3272 | if (migr_rec->ascending_migr == 0 | |
3273 | && migr_rec->dest_depth_per_unit > 0) | |
3274 | /* descending reshape not supported yet */ | |
3275 | return -1; | |
3276 | } | |
3277 | } | |
3278 | return 0; | |
3279 | } | |
3280 | ||
3281 | static void __free_imsm(struct intel_super *super, int free_disks); | |
3282 | ||
3283 | /* load_imsm_mpb - read matrix metadata | |
3284 | * allocates super->mpb to be freed by free_imsm | |
3285 | */ | |
3286 | static int load_imsm_mpb(int fd, struct intel_super *super, char *devname) | |
3287 | { | |
3288 | unsigned long long dsize; | |
3289 | unsigned long long sectors; | |
3290 | struct stat; | |
3291 | struct imsm_super *anchor; | |
3292 | __u32 check_sum; | |
3293 | ||
3294 | get_dev_size(fd, NULL, &dsize); | |
3295 | if (dsize < 1024) { | |
3296 | if (devname) | |
3297 | fprintf(stderr, | |
3298 | Name ": %s: device to small for imsm\n", | |
3299 | devname); | |
3300 | return 1; | |
3301 | } | |
3302 | ||
3303 | if (lseek64(fd, dsize - (512 * 2), SEEK_SET) < 0) { | |
3304 | if (devname) | |
3305 | fprintf(stderr, Name | |
3306 | ": Cannot seek to anchor block on %s: %s\n", | |
3307 | devname, strerror(errno)); | |
3308 | return 1; | |
3309 | } | |
3310 | ||
3311 | if (posix_memalign((void**)&anchor, 512, 512) != 0) { | |
3312 | if (devname) | |
3313 | fprintf(stderr, | |
3314 | Name ": Failed to allocate imsm anchor buffer" | |
3315 | " on %s\n", devname); | |
3316 | return 1; | |
3317 | } | |
3318 | if (read(fd, anchor, 512) != 512) { | |
3319 | if (devname) | |
3320 | fprintf(stderr, | |
3321 | Name ": Cannot read anchor block on %s: %s\n", | |
3322 | devname, strerror(errno)); | |
3323 | free(anchor); | |
3324 | return 1; | |
3325 | } | |
3326 | ||
3327 | if (strncmp((char *) anchor->sig, MPB_SIGNATURE, MPB_SIG_LEN) != 0) { | |
3328 | if (devname) | |
3329 | fprintf(stderr, | |
3330 | Name ": no IMSM anchor on %s\n", devname); | |
3331 | free(anchor); | |
3332 | return 2; | |
3333 | } | |
3334 | ||
3335 | __free_imsm(super, 0); | |
3336 | /* reload capability and hba */ | |
3337 | ||
3338 | /* capability and hba must be updated with new super allocation */ | |
3339 | find_intel_hba_capability(fd, super, devname); | |
3340 | super->len = ROUND_UP(anchor->mpb_size, 512); | |
3341 | if (posix_memalign(&super->buf, 512, super->len) != 0) { | |
3342 | if (devname) | |
3343 | fprintf(stderr, | |
3344 | Name ": unable to allocate %zu byte mpb buffer\n", | |
3345 | super->len); | |
3346 | free(anchor); | |
3347 | return 2; | |
3348 | } | |
3349 | memcpy(super->buf, anchor, 512); | |
3350 | ||
3351 | sectors = mpb_sectors(anchor) - 1; | |
3352 | free(anchor); | |
3353 | ||
3354 | if (posix_memalign(&super->migr_rec_buf, 512, 512) != 0) { | |
3355 | fprintf(stderr, Name | |
3356 | ": %s could not allocate migr_rec buffer\n", __func__); | |
3357 | free(super->buf); | |
3358 | return 2; | |
3359 | } | |
3360 | ||
3361 | if (!sectors) { | |
3362 | check_sum = __gen_imsm_checksum(super->anchor); | |
3363 | if (check_sum != __le32_to_cpu(super->anchor->check_sum)) { | |
3364 | if (devname) | |
3365 | fprintf(stderr, | |
3366 | Name ": IMSM checksum %x != %x on %s\n", | |
3367 | check_sum, | |
3368 | __le32_to_cpu(super->anchor->check_sum), | |
3369 | devname); | |
3370 | return 2; | |
3371 | } | |
3372 | ||
3373 | return 0; | |
3374 | } | |
3375 | ||
3376 | /* read the extended mpb */ | |
3377 | if (lseek64(fd, dsize - (512 * (2 + sectors)), SEEK_SET) < 0) { | |
3378 | if (devname) | |
3379 | fprintf(stderr, | |
3380 | Name ": Cannot seek to extended mpb on %s: %s\n", | |
3381 | devname, strerror(errno)); | |
3382 | return 1; | |
3383 | } | |
3384 | ||
3385 | if ((unsigned)read(fd, super->buf + 512, super->len - 512) != super->len - 512) { | |
3386 | if (devname) | |
3387 | fprintf(stderr, | |
3388 | Name ": Cannot read extended mpb on %s: %s\n", | |
3389 | devname, strerror(errno)); | |
3390 | return 2; | |
3391 | } | |
3392 | ||
3393 | check_sum = __gen_imsm_checksum(super->anchor); | |
3394 | if (check_sum != __le32_to_cpu(super->anchor->check_sum)) { | |
3395 | if (devname) | |
3396 | fprintf(stderr, | |
3397 | Name ": IMSM checksum %x != %x on %s\n", | |
3398 | check_sum, __le32_to_cpu(super->anchor->check_sum), | |
3399 | devname); | |
3400 | return 3; | |
3401 | } | |
3402 | ||
3403 | /* FIXME the BBM log is disk specific so we cannot use this global | |
3404 | * buffer for all disks. Ok for now since we only look at the global | |
3405 | * bbm_log_size parameter to gate assembly | |
3406 | */ | |
3407 | super->bbm_log = __get_imsm_bbm_log(super->anchor); | |
3408 | ||
3409 | return 0; | |
3410 | } | |
3411 | ||
3412 | static int read_imsm_migr_rec(int fd, struct intel_super *super); | |
3413 | ||
3414 | static int | |
3415 | load_and_parse_mpb(int fd, struct intel_super *super, char *devname, int keep_fd) | |
3416 | { | |
3417 | int err; | |
3418 | ||
3419 | err = load_imsm_mpb(fd, super, devname); | |
3420 | if (err) | |
3421 | return err; | |
3422 | err = load_imsm_disk(fd, super, devname, keep_fd); | |
3423 | if (err) | |
3424 | return err; | |
3425 | err = parse_raid_devices(super); | |
3426 | ||
3427 | return err; | |
3428 | } | |
3429 | ||
3430 | static void __free_imsm_disk(struct dl *d) | |
3431 | { | |
3432 | if (d->fd >= 0) | |
3433 | close(d->fd); | |
3434 | if (d->devname) | |
3435 | free(d->devname); | |
3436 | if (d->e) | |
3437 | free(d->e); | |
3438 | free(d); | |
3439 | ||
3440 | } | |
3441 | ||
3442 | static void free_imsm_disks(struct intel_super *super) | |
3443 | { | |
3444 | struct dl *d; | |
3445 | ||
3446 | while (super->disks) { | |
3447 | d = super->disks; | |
3448 | super->disks = d->next; | |
3449 | __free_imsm_disk(d); | |
3450 | } | |
3451 | while (super->disk_mgmt_list) { | |
3452 | d = super->disk_mgmt_list; | |
3453 | super->disk_mgmt_list = d->next; | |
3454 | __free_imsm_disk(d); | |
3455 | } | |
3456 | while (super->missing) { | |
3457 | d = super->missing; | |
3458 | super->missing = d->next; | |
3459 | __free_imsm_disk(d); | |
3460 | } | |
3461 | ||
3462 | } | |
3463 | ||
3464 | /* free all the pieces hanging off of a super pointer */ | |
3465 | static void __free_imsm(struct intel_super *super, int free_disks) | |
3466 | { | |
3467 | struct intel_hba *elem, *next; | |
3468 | ||
3469 | if (super->buf) { | |
3470 | free(super->buf); | |
3471 | super->buf = NULL; | |
3472 | } | |
3473 | /* unlink capability description */ | |
3474 | super->orom = NULL; | |
3475 | if (super->migr_rec_buf) { | |
3476 | free(super->migr_rec_buf); | |
3477 | super->migr_rec_buf = NULL; | |
3478 | } | |
3479 | if (free_disks) | |
3480 | free_imsm_disks(super); | |
3481 | free_devlist(super); | |
3482 | elem = super->hba; | |
3483 | while (elem) { | |
3484 | if (elem->path) | |
3485 | free((void *)elem->path); | |
3486 | next = elem->next; | |
3487 | free(elem); | |
3488 | elem = next; | |
3489 | } | |
3490 | super->hba = NULL; | |
3491 | } | |
3492 | ||
3493 | static void free_imsm(struct intel_super *super) | |
3494 | { | |
3495 | __free_imsm(super, 1); | |
3496 | free(super); | |
3497 | } | |
3498 | ||
3499 | static void free_super_imsm(struct supertype *st) | |
3500 | { | |
3501 | struct intel_super *super = st->sb; | |
3502 | ||
3503 | if (!super) | |
3504 | return; | |
3505 | ||
3506 | free_imsm(super); | |
3507 | st->sb = NULL; | |
3508 | } | |
3509 | ||
3510 | static struct intel_super *alloc_super(void) | |
3511 | { | |
3512 | struct intel_super *super = malloc(sizeof(*super)); | |
3513 | ||
3514 | if (super) { | |
3515 | memset(super, 0, sizeof(*super)); | |
3516 | super->current_vol = -1; | |
3517 | super->create_offset = ~((__u32 ) 0); | |
3518 | } | |
3519 | return super; | |
3520 | } | |
3521 | ||
3522 | /* | |
3523 | * find and allocate hba and OROM/EFI based on valid fd of RAID component device | |
3524 | */ | |
3525 | static int find_intel_hba_capability(int fd, struct intel_super *super, char *devname) | |
3526 | { | |
3527 | struct sys_dev *hba_name; | |
3528 | int rv = 0; | |
3529 | ||
3530 | if ((fd < 0) || check_env("IMSM_NO_PLATFORM")) { | |
3531 | super->orom = NULL; | |
3532 | super->hba = NULL; | |
3533 | return 0; | |
3534 | } | |
3535 | hba_name = find_disk_attached_hba(fd, NULL); | |
3536 | if (!hba_name) { | |
3537 | if (devname) | |
3538 | fprintf(stderr, | |
3539 | Name ": %s is not attached to Intel(R) RAID controller.\n", | |
3540 | devname); | |
3541 | return 1; | |
3542 | } | |
3543 | rv = attach_hba_to_super(super, hba_name); | |
3544 | if (rv == 2) { | |
3545 | if (devname) { | |
3546 | struct intel_hba *hba = super->hba; | |
3547 | ||
3548 | fprintf(stderr, Name ": %s is attached to Intel(R) %s RAID " | |
3549 | "controller (%s),\n" | |
3550 | " but the container is assigned to Intel(R) " | |
3551 | "%s RAID controller (", | |
3552 | devname, | |
3553 | hba_name->path, | |
3554 | hba_name->pci_id ? : "Err!", | |
3555 | get_sys_dev_type(hba_name->type)); | |
3556 | ||
3557 | while (hba) { | |
3558 | fprintf(stderr, "%s", hba->pci_id ? : "Err!"); | |
3559 | if (hba->next) | |
3560 | fprintf(stderr, ", "); | |
3561 | hba = hba->next; | |
3562 | } | |
3563 | ||
3564 | fprintf(stderr, ").\n" | |
3565 | " Mixing devices attached to different controllers " | |
3566 | "is not allowed.\n"); | |
3567 | } | |
3568 | free_sys_dev(&hba_name); | |
3569 | return 2; | |
3570 | } | |
3571 | super->orom = find_imsm_capability(hba_name->type); | |
3572 | free_sys_dev(&hba_name); | |
3573 | if (!super->orom) | |
3574 | return 3; | |
3575 | return 0; | |
3576 | } | |
3577 | ||
3578 | /* find_missing - helper routine for load_super_imsm_all that identifies | |
3579 | * disks that have disappeared from the system. This routine relies on | |
3580 | * the mpb being uptodate, which it is at load time. | |
3581 | */ | |
3582 | static int find_missing(struct intel_super *super) | |
3583 | { | |
3584 | int i; | |
3585 | struct imsm_super *mpb = super->anchor; | |
3586 | struct dl *dl; | |
3587 | struct imsm_disk *disk; | |
3588 | ||
3589 | for (i = 0; i < mpb->num_disks; i++) { | |
3590 | disk = __get_imsm_disk(mpb, i); | |
3591 | dl = serial_to_dl(disk->serial, super); | |
3592 | if (dl) | |
3593 | continue; | |
3594 | ||
3595 | dl = malloc(sizeof(*dl)); | |
3596 | if (!dl) | |
3597 | return 1; | |
3598 | dl->major = 0; | |
3599 | dl->minor = 0; | |
3600 | dl->fd = -1; | |
3601 | dl->devname = strdup("missing"); | |
3602 | dl->index = i; | |
3603 | serialcpy(dl->serial, disk->serial); | |
3604 | dl->disk = *disk; | |
3605 | dl->e = NULL; | |
3606 | dl->next = super->missing; | |
3607 | super->missing = dl; | |
3608 | } | |
3609 | ||
3610 | return 0; | |
3611 | } | |
3612 | ||
3613 | #ifndef MDASSEMBLE | |
3614 | static struct intel_disk *disk_list_get(__u8 *serial, struct intel_disk *disk_list) | |
3615 | { | |
3616 | struct intel_disk *idisk = disk_list; | |
3617 | ||
3618 | while (idisk) { | |
3619 | if (serialcmp(idisk->disk.serial, serial) == 0) | |
3620 | break; | |
3621 | idisk = idisk->next; | |
3622 | } | |
3623 | ||
3624 | return idisk; | |
3625 | } | |
3626 | ||
3627 | static int __prep_thunderdome(struct intel_super **table, int tbl_size, | |
3628 | struct intel_super *super, | |
3629 | struct intel_disk **disk_list) | |
3630 | { | |
3631 | struct imsm_disk *d = &super->disks->disk; | |
3632 | struct imsm_super *mpb = super->anchor; | |
3633 | int i, j; | |
3634 | ||
3635 | for (i = 0; i < tbl_size; i++) { | |
3636 | struct imsm_super *tbl_mpb = table[i]->anchor; | |
3637 | struct imsm_disk *tbl_d = &table[i]->disks->disk; | |
3638 | ||
3639 | if (tbl_mpb->family_num == mpb->family_num) { | |
3640 | if (tbl_mpb->check_sum == mpb->check_sum) { | |
3641 | dprintf("%s: mpb from %d:%d matches %d:%d\n", | |
3642 | __func__, super->disks->major, | |
3643 | super->disks->minor, | |
3644 | table[i]->disks->major, | |
3645 | table[i]->disks->minor); | |
3646 | break; | |
3647 | } | |
3648 | ||
3649 | if (((is_configured(d) && !is_configured(tbl_d)) || | |
3650 | is_configured(d) == is_configured(tbl_d)) && | |
3651 | tbl_mpb->generation_num < mpb->generation_num) { | |
3652 | /* current version of the mpb is a | |
3653 | * better candidate than the one in | |
3654 | * super_table, but copy over "cross | |
3655 | * generational" status | |
3656 | */ | |
3657 | struct intel_disk *idisk; | |
3658 | ||
3659 | dprintf("%s: mpb from %d:%d replaces %d:%d\n", | |
3660 | __func__, super->disks->major, | |
3661 | super->disks->minor, | |
3662 | table[i]->disks->major, | |
3663 | table[i]->disks->minor); | |
3664 | ||
3665 | idisk = disk_list_get(tbl_d->serial, *disk_list); | |
3666 | if (idisk && is_failed(&idisk->disk)) | |
3667 | tbl_d->status |= FAILED_DISK; | |
3668 | break; | |
3669 | } else { | |
3670 | struct intel_disk *idisk; | |
3671 | struct imsm_disk *disk; | |
3672 | ||
3673 | /* tbl_mpb is more up to date, but copy | |
3674 | * over cross generational status before | |
3675 | * returning | |
3676 | */ | |
3677 | disk = __serial_to_disk(d->serial, mpb, NULL); | |
3678 | if (disk && is_failed(disk)) | |
3679 | d->status |= FAILED_DISK; | |
3680 | ||
3681 | idisk = disk_list_get(d->serial, *disk_list); | |
3682 | if (idisk) { | |
3683 | idisk->owner = i; | |
3684 | if (disk && is_configured(disk)) | |
3685 | idisk->disk.status |= CONFIGURED_DISK; | |
3686 | } | |
3687 | ||
3688 | dprintf("%s: mpb from %d:%d prefer %d:%d\n", | |
3689 | __func__, super->disks->major, | |
3690 | super->disks->minor, | |
3691 | table[i]->disks->major, | |
3692 | table[i]->disks->minor); | |
3693 | ||
3694 | return tbl_size; | |
3695 | } | |
3696 | } | |
3697 | } | |
3698 | ||
3699 | if (i >= tbl_size) | |
3700 | table[tbl_size++] = super; | |
3701 | else | |
3702 | table[i] = super; | |
3703 | ||
3704 | /* update/extend the merged list of imsm_disk records */ | |
3705 | for (j = 0; j < mpb->num_disks; j++) { | |
3706 | struct imsm_disk *disk = __get_imsm_disk(mpb, j); | |
3707 | struct intel_disk *idisk; | |
3708 | ||
3709 | idisk = disk_list_get(disk->serial, *disk_list); | |
3710 | if (idisk) { | |
3711 | idisk->disk.status |= disk->status; | |
3712 | if (is_configured(&idisk->disk) || | |
3713 | is_failed(&idisk->disk)) | |
3714 | idisk->disk.status &= ~(SPARE_DISK); | |
3715 | } else { | |
3716 | idisk = calloc(1, sizeof(*idisk)); | |
3717 | if (!idisk) | |
3718 | return -1; | |
3719 | idisk->owner = IMSM_UNKNOWN_OWNER; | |
3720 | idisk->disk = *disk; | |
3721 | idisk->next = *disk_list; | |
3722 | *disk_list = idisk; | |
3723 | } | |
3724 | ||
3725 | if (serialcmp(idisk->disk.serial, d->serial) == 0) | |
3726 | idisk->owner = i; | |
3727 | } | |
3728 | ||
3729 | return tbl_size; | |
3730 | } | |
3731 | ||
3732 | static struct intel_super * | |
3733 | validate_members(struct intel_super *super, struct intel_disk *disk_list, | |
3734 | const int owner) | |
3735 | { | |
3736 | struct imsm_super *mpb = super->anchor; | |
3737 | int ok_count = 0; | |
3738 | int i; | |
3739 | ||
3740 | for (i = 0; i < mpb->num_disks; i++) { | |
3741 | struct imsm_disk *disk = __get_imsm_disk(mpb, i); | |
3742 | struct intel_disk *idisk; | |
3743 | ||
3744 | idisk = disk_list_get(disk->serial, disk_list); | |
3745 | if (idisk) { | |
3746 | if (idisk->owner == owner || | |
3747 | idisk->owner == IMSM_UNKNOWN_OWNER) | |
3748 | ok_count++; | |
3749 | else | |
3750 | dprintf("%s: '%.16s' owner %d != %d\n", | |
3751 | __func__, disk->serial, idisk->owner, | |
3752 | owner); | |
3753 | } else { | |
3754 | dprintf("%s: unknown disk %x [%d]: %.16s\n", | |
3755 | __func__, __le32_to_cpu(mpb->family_num), i, | |
3756 | disk->serial); | |
3757 | break; | |
3758 | } | |
3759 | } | |
3760 | ||
3761 | if (ok_count == mpb->num_disks) | |
3762 | return super; | |
3763 | return NULL; | |
3764 | } | |
3765 | ||
3766 | static void show_conflicts(__u32 family_num, struct intel_super *super_list) | |
3767 | { | |
3768 | struct intel_super *s; | |
3769 | ||
3770 | for (s = super_list; s; s = s->next) { | |
3771 | if (family_num != s->anchor->family_num) | |
3772 | continue; | |
3773 | fprintf(stderr, "Conflict, offlining family %#x on '%s'\n", | |
3774 | __le32_to_cpu(family_num), s->disks->devname); | |
3775 | } | |
3776 | } | |
3777 | ||
3778 | static struct intel_super * | |
3779 | imsm_thunderdome(struct intel_super **super_list, int len) | |
3780 | { | |
3781 | struct intel_super *super_table[len]; | |
3782 | struct intel_disk *disk_list = NULL; | |
3783 | struct intel_super *champion, *spare; | |
3784 | struct intel_super *s, **del; | |
3785 | int tbl_size = 0; | |
3786 | int conflict; | |
3787 | int i; | |
3788 | ||
3789 | memset(super_table, 0, sizeof(super_table)); | |
3790 | for (s = *super_list; s; s = s->next) | |
3791 | tbl_size = __prep_thunderdome(super_table, tbl_size, s, &disk_list); | |
3792 | ||
3793 | for (i = 0; i < tbl_size; i++) { | |
3794 | struct imsm_disk *d; | |
3795 | struct intel_disk *idisk; | |
3796 | struct imsm_super *mpb = super_table[i]->anchor; | |
3797 | ||
3798 | s = super_table[i]; | |
3799 | d = &s->disks->disk; | |
3800 | ||
3801 | /* 'd' must appear in merged disk list for its | |
3802 | * configuration to be valid | |
3803 | */ | |
3804 | idisk = disk_list_get(d->serial, disk_list); | |
3805 | if (idisk && idisk->owner == i) | |
3806 | s = validate_members(s, disk_list, i); | |
3807 | else | |
3808 | s = NULL; | |
3809 | ||
3810 | if (!s) | |
3811 | dprintf("%s: marking family: %#x from %d:%d offline\n", | |
3812 | __func__, mpb->family_num, | |
3813 | super_table[i]->disks->major, | |
3814 | super_table[i]->disks->minor); | |
3815 | super_table[i] = s; | |
3816 | } | |
3817 | ||
3818 | /* This is where the mdadm implementation differs from the Windows | |
3819 | * driver which has no strict concept of a container. We can only | |
3820 | * assemble one family from a container, so when returning a prodigal | |
3821 | * array member to this system the code will not be able to disambiguate | |
3822 | * the container contents that should be assembled ("foreign" versus | |
3823 | * "local"). It requires user intervention to set the orig_family_num | |
3824 | * to a new value to establish a new container. The Windows driver in | |
3825 | * this situation fixes up the volume name in place and manages the | |
3826 | * foreign array as an independent entity. | |
3827 | */ | |
3828 | s = NULL; | |
3829 | spare = NULL; | |
3830 | conflict = 0; | |
3831 | for (i = 0; i < tbl_size; i++) { | |
3832 | struct intel_super *tbl_ent = super_table[i]; | |
3833 | int is_spare = 0; | |
3834 | ||
3835 | if (!tbl_ent) | |
3836 | continue; | |
3837 | ||
3838 | if (tbl_ent->anchor->num_raid_devs == 0) { | |
3839 | spare = tbl_ent; | |
3840 | is_spare = 1; | |
3841 | } | |
3842 | ||
3843 | if (s && !is_spare) { | |
3844 | show_conflicts(tbl_ent->anchor->family_num, *super_list); | |
3845 | conflict++; | |
3846 | } else if (!s && !is_spare) | |
3847 | s = tbl_ent; | |
3848 | } | |
3849 | ||
3850 | if (!s) | |
3851 | s = spare; | |
3852 | if (!s) { | |
3853 | champion = NULL; | |
3854 | goto out; | |
3855 | } | |
3856 | champion = s; | |
3857 | ||
3858 | if (conflict) | |
3859 | fprintf(stderr, "Chose family %#x on '%s', " | |
3860 | "assemble conflicts to new container with '--update=uuid'\n", | |
3861 | __le32_to_cpu(s->anchor->family_num), s->disks->devname); | |
3862 | ||
3863 | /* collect all dl's onto 'champion', and update them to | |
3864 | * champion's version of the status | |
3865 | */ | |
3866 | for (s = *super_list; s; s = s->next) { | |
3867 | struct imsm_super *mpb = champion->anchor; | |
3868 | struct dl *dl = s->disks; | |
3869 | ||
3870 | if (s == champion) | |
3871 | continue; | |
3872 | ||
3873 | for (i = 0; i < mpb->num_disks; i++) { | |
3874 | struct imsm_disk *disk; | |
3875 | ||
3876 | disk = __serial_to_disk(dl->serial, mpb, &dl->index); | |
3877 | if (disk) { | |
3878 | dl->disk = *disk; | |
3879 | /* only set index on disks that are a member of | |
3880 | * a populated contianer, i.e. one with | |
3881 | * raid_devs | |
3882 | */ | |
3883 | if (is_failed(&dl->disk)) | |
3884 | dl->index = -2; | |
3885 | else if (is_spare(&dl->disk)) | |
3886 | dl->index = -1; | |
3887 | break; | |
3888 | } | |
3889 | } | |
3890 | ||
3891 | if (i >= mpb->num_disks) { | |
3892 | struct intel_disk *idisk; | |
3893 | ||
3894 | idisk = disk_list_get(dl->serial, disk_list); | |
3895 | if (idisk && is_spare(&idisk->disk) && | |
3896 | !is_failed(&idisk->disk) && !is_configured(&idisk->disk)) | |
3897 | dl->index = -1; | |
3898 | else { | |
3899 | dl->index = -2; | |
3900 | continue; | |
3901 | } | |
3902 | } | |
3903 | ||
3904 | dl->next = champion->disks; | |
3905 | champion->disks = dl; | |
3906 | s->disks = NULL; | |
3907 | } | |
3908 | ||
3909 | /* delete 'champion' from super_list */ | |
3910 | for (del = super_list; *del; ) { | |
3911 | if (*del == champion) { | |
3912 | *del = (*del)->next; | |
3913 | break; | |
3914 | } else | |
3915 | del = &(*del)->next; | |
3916 | } | |
3917 | champion->next = NULL; | |
3918 | ||
3919 | out: | |
3920 | while (disk_list) { | |
3921 | struct intel_disk *idisk = disk_list; | |
3922 | ||
3923 | disk_list = disk_list->next; | |
3924 | free(idisk); | |
3925 | } | |
3926 | ||
3927 | return champion; | |
3928 | } | |
3929 | ||
3930 | static int load_super_imsm_all(struct supertype *st, int fd, void **sbp, | |
3931 | char *devname) | |
3932 | { | |
3933 | struct mdinfo *sra; | |
3934 | struct intel_super *super_list = NULL; | |
3935 | struct intel_super *super = NULL; | |
3936 | int devnum = fd2devnum(fd); | |
3937 | struct mdinfo *sd; | |
3938 | int retry; | |
3939 | int err = 0; | |
3940 | int i; | |
3941 | ||
3942 | /* check if 'fd' an opened container */ | |
3943 | sra = sysfs_read(fd, 0, GET_LEVEL|GET_VERSION|GET_DEVS|GET_STATE); | |
3944 | if (!sra) | |
3945 | return 1; | |
3946 | ||
3947 | if (sra->array.major_version != -1 || | |
3948 | sra->array.minor_version != -2 || | |
3949 | strcmp(sra->text_version, "imsm") != 0) { | |
3950 | err = 1; | |
3951 | goto error; | |
3952 | } | |
3953 | /* load all mpbs */ | |
3954 | for (sd = sra->devs, i = 0; sd; sd = sd->next, i++) { | |
3955 | struct intel_super *s = alloc_super(); | |
3956 | char nm[32]; | |
3957 | int dfd; | |
3958 | int rv; | |
3959 | ||
3960 | err = 1; | |
3961 | if (!s) | |
3962 | goto error; | |
3963 | s->next = super_list; | |
3964 | super_list = s; | |
3965 | ||
3966 | err = 2; | |
3967 | sprintf(nm, "%d:%d", sd->disk.major, sd->disk.minor); | |
3968 | dfd = dev_open(nm, O_RDWR); | |
3969 | if (dfd < 0) | |
3970 | goto error; | |
3971 | ||
3972 | rv = find_intel_hba_capability(dfd, s, devname); | |
3973 | /* no orom/efi or non-intel hba of the disk */ | |
3974 | if (rv != 0) | |
3975 | goto error; | |
3976 | ||
3977 | err = load_and_parse_mpb(dfd, s, NULL, 1); | |
3978 | ||
3979 | /* retry the load if we might have raced against mdmon */ | |
3980 | if (err == 3 && mdmon_running(devnum)) | |
3981 | for (retry = 0; retry < 3; retry++) { | |
3982 | usleep(3000); | |
3983 | err = load_and_parse_mpb(dfd, s, NULL, 1); | |
3984 | if (err != 3) | |
3985 | break; | |
3986 | } | |
3987 | if (err) | |
3988 | goto error; | |
3989 | } | |
3990 | ||
3991 | /* all mpbs enter, maybe one leaves */ | |
3992 | super = imsm_thunderdome(&super_list, i); | |
3993 | if (!super) { | |
3994 | err = 1; | |
3995 | goto error; | |
3996 | } | |
3997 | ||
3998 | if (find_missing(super) != 0) { | |
3999 | free_imsm(super); | |
4000 | err = 2; | |
4001 | goto error; | |
4002 | } | |
4003 | ||
4004 | /* load migration record */ | |
4005 | err = load_imsm_migr_rec(super, NULL); | |
4006 | if (err) { | |
4007 | err = 4; | |
4008 | goto error; | |
4009 | } | |
4010 | ||
4011 | /* Check migration compatibility */ | |
4012 | if (check_mpb_migr_compatibility(super) != 0) { | |
4013 | fprintf(stderr, Name ": Unsupported migration detected"); | |
4014 | if (devname) | |
4015 | fprintf(stderr, " on %s\n", devname); | |
4016 | else | |
4017 | fprintf(stderr, " (IMSM).\n"); | |
4018 | ||
4019 | err = 5; | |
4020 | goto error; | |
4021 | } | |
4022 | ||
4023 | err = 0; | |
4024 | ||
4025 | error: | |
4026 | while (super_list) { | |
4027 | struct intel_super *s = super_list; | |
4028 | ||
4029 | super_list = super_list->next; | |
4030 | free_imsm(s); | |
4031 | } | |
4032 | sysfs_free(sra); | |
4033 | ||
4034 | if (err) | |
4035 | return err; | |
4036 | ||
4037 | *sbp = super; | |
4038 | st->container_dev = devnum; | |
4039 | if (err == 0 && st->ss == NULL) { | |
4040 | st->ss = &super_imsm; | |
4041 | st->minor_version = 0; | |
4042 | st->max_devs = IMSM_MAX_DEVICES; | |
4043 | } | |
4044 | return 0; | |
4045 | } | |
4046 | ||
4047 | static int load_container_imsm(struct supertype *st, int fd, char *devname) | |
4048 | { | |
4049 | return load_super_imsm_all(st, fd, &st->sb, devname); | |
4050 | } | |
4051 | #endif | |
4052 | ||
4053 | static int load_super_imsm(struct supertype *st, int fd, char *devname) | |
4054 | { | |
4055 | struct intel_super *super; | |
4056 | int rv; | |
4057 | ||
4058 | if (test_partition(fd)) | |
4059 | /* IMSM not allowed on partitions */ | |
4060 | return 1; | |
4061 | ||
4062 | free_super_imsm(st); | |
4063 | ||
4064 | super = alloc_super(); | |
4065 | if (!super) { | |
4066 | fprintf(stderr, | |
4067 | Name ": malloc of %zu failed.\n", | |
4068 | sizeof(*super)); | |
4069 | return 1; | |
4070 | } | |
4071 | /* Load hba and capabilities if they exist. | |
4072 | * But do not preclude loading metadata in case capabilities or hba are | |
4073 | * non-compliant and ignore_hw_compat is set. | |
4074 | */ | |
4075 | rv = find_intel_hba_capability(fd, super, devname); | |
4076 | /* no orom/efi or non-intel hba of the disk */ | |
4077 | if ((rv != 0) && (st->ignore_hw_compat == 0)) { | |
4078 | if (devname) | |
4079 | fprintf(stderr, | |
4080 | Name ": No OROM/EFI properties for %s\n", devname); | |
4081 | free_imsm(super); | |
4082 | return 2; | |
4083 | } | |
4084 | rv = load_and_parse_mpb(fd, super, devname, 0); | |
4085 | ||
4086 | if (rv) { | |
4087 | if (devname) | |
4088 | fprintf(stderr, | |
4089 | Name ": Failed to load all information " | |
4090 | "sections on %s\n", devname); | |
4091 | free_imsm(super); | |
4092 | return rv; | |
4093 | } | |
4094 | ||
4095 | st->sb = super; | |
4096 | if (st->ss == NULL) { | |
4097 | st->ss = &super_imsm; | |
4098 | st->minor_version = 0; | |
4099 | st->max_devs = IMSM_MAX_DEVICES; | |
4100 | } | |
4101 | ||
4102 | /* load migration record */ | |
4103 | if (load_imsm_migr_rec(super, NULL) == 0) { | |
4104 | /* Check for unsupported migration features */ | |
4105 | if (check_mpb_migr_compatibility(super) != 0) { | |
4106 | fprintf(stderr, | |
4107 | Name ": Unsupported migration detected"); | |
4108 | if (devname) | |
4109 | fprintf(stderr, " on %s\n", devname); | |
4110 | else | |
4111 | fprintf(stderr, " (IMSM).\n"); | |
4112 | return 3; | |
4113 | } | |
4114 | } | |
4115 | ||
4116 | return 0; | |
4117 | } | |
4118 | ||
4119 | static __u16 info_to_blocks_per_strip(mdu_array_info_t *info) | |
4120 | { | |
4121 | if (info->level == 1) | |
4122 | return 128; | |
4123 | return info->chunk_size >> 9; | |
4124 | } | |
4125 | ||
4126 | static __u32 info_to_num_data_stripes(mdu_array_info_t *info, int num_domains) | |
4127 | { | |
4128 | __u32 num_stripes; | |
4129 | ||
4130 | num_stripes = (info->size * 2) / info_to_blocks_per_strip(info); | |
4131 | num_stripes /= num_domains; | |
4132 | ||
4133 | return num_stripes; | |
4134 | } | |
4135 | ||
4136 | static __u32 info_to_blocks_per_member(mdu_array_info_t *info) | |
4137 | { | |
4138 | if (info->level == 1) | |
4139 | return info->size * 2; | |
4140 | else | |
4141 | return (info->size * 2) & ~(info_to_blocks_per_strip(info) - 1); | |
4142 | } | |
4143 | ||
4144 | static void imsm_update_version_info(struct intel_super *super) | |
4145 | { | |
4146 | /* update the version and attributes */ | |
4147 | struct imsm_super *mpb = super->anchor; | |
4148 | char *version; | |
4149 | struct imsm_dev *dev; | |
4150 | struct imsm_map *map; | |
4151 | int i; | |
4152 | ||
4153 | for (i = 0; i < mpb->num_raid_devs; i++) { | |
4154 | dev = get_imsm_dev(super, i); | |
4155 | map = get_imsm_map(dev, 0); | |
4156 | if (__le32_to_cpu(dev->size_high) > 0) | |
4157 | mpb->attributes |= MPB_ATTRIB_2TB; | |
4158 | ||
4159 | /* FIXME detect when an array spans a port multiplier */ | |
4160 | #if 0 | |
4161 | mpb->attributes |= MPB_ATTRIB_PM; | |
4162 | #endif | |
4163 | ||
4164 | if (mpb->num_raid_devs > 1 || | |
4165 | mpb->attributes != MPB_ATTRIB_CHECKSUM_VERIFY) { | |
4166 | version = MPB_VERSION_ATTRIBS; | |
4167 | switch (get_imsm_raid_level(map)) { | |
4168 | case 0: mpb->attributes |= MPB_ATTRIB_RAID0; break; | |
4169 | case 1: mpb->attributes |= MPB_ATTRIB_RAID1; break; | |
4170 | case 10: mpb->attributes |= MPB_ATTRIB_RAID10; break; | |
4171 | case 5: mpb->attributes |= MPB_ATTRIB_RAID5; break; | |
4172 | } | |
4173 | } else { | |
4174 | if (map->num_members >= 5) | |
4175 | version = MPB_VERSION_5OR6_DISK_ARRAY; | |
4176 | else if (dev->status == DEV_CLONE_N_GO) | |
4177 | version = MPB_VERSION_CNG; | |
4178 | else if (get_imsm_raid_level(map) == 5) | |
4179 | version = MPB_VERSION_RAID5; | |
4180 | else if (map->num_members >= 3) | |
4181 | version = MPB_VERSION_3OR4_DISK_ARRAY; | |
4182 | else if (get_imsm_raid_level(map) == 1) | |
4183 | version = MPB_VERSION_RAID1; | |
4184 | else | |
4185 | version = MPB_VERSION_RAID0; | |
4186 | } | |
4187 | strcpy(((char *) mpb->sig) + strlen(MPB_SIGNATURE), version); | |
4188 | } | |
4189 | } | |
4190 | ||
4191 | static int check_name(struct intel_super *super, char *name, int quiet) | |
4192 | { | |
4193 | struct imsm_super *mpb = super->anchor; | |
4194 | char *reason = NULL; | |
4195 | int i; | |
4196 | ||
4197 | if (strlen(name) > MAX_RAID_SERIAL_LEN) | |
4198 | reason = "must be 16 characters or less"; | |
4199 | ||
4200 | for (i = 0; i < mpb->num_raid_devs; i++) { | |
4201 | struct imsm_dev *dev = get_imsm_dev(super, i); | |
4202 | ||
4203 | if (strncmp((char *) dev->volume, name, MAX_RAID_SERIAL_LEN) == 0) { | |
4204 | reason = "already exists"; | |
4205 | break; | |
4206 | } | |
4207 | } | |
4208 | ||
4209 | if (reason && !quiet) | |
4210 | fprintf(stderr, Name ": imsm volume name %s\n", reason); | |
4211 | ||
4212 | return !reason; | |
4213 | } | |
4214 | ||
4215 | static int init_super_imsm_volume(struct supertype *st, mdu_array_info_t *info, | |
4216 | unsigned long long size, char *name, | |
4217 | char *homehost, int *uuid) | |
4218 | { | |
4219 | /* We are creating a volume inside a pre-existing container. | |
4220 | * so st->sb is already set. | |
4221 | */ | |
4222 | struct intel_super *super = st->sb; | |
4223 | struct imsm_super *mpb = super->anchor; | |
4224 | struct intel_dev *dv; | |
4225 | struct imsm_dev *dev; | |
4226 | struct imsm_vol *vol; | |
4227 | struct imsm_map *map; | |
4228 | int idx = mpb->num_raid_devs; | |
4229 | int i; | |
4230 | unsigned long long array_blocks; | |
4231 | size_t size_old, size_new; | |
4232 | __u32 num_data_stripes; | |
4233 | ||
4234 | if (super->orom && mpb->num_raid_devs >= super->orom->vpa) { | |
4235 | fprintf(stderr, Name": This imsm-container already has the " | |
4236 | "maximum of %d volumes\n", super->orom->vpa); | |
4237 | return 0; | |
4238 | } | |
4239 | ||
4240 | /* ensure the mpb is large enough for the new data */ | |
4241 | size_old = __le32_to_cpu(mpb->mpb_size); | |
4242 | size_new = disks_to_mpb_size(info->nr_disks); | |
4243 | if (size_new > size_old) { | |
4244 | void *mpb_new; | |
4245 | size_t size_round = ROUND_UP(size_new, 512); | |
4246 | ||
4247 | if (posix_memalign(&mpb_new, 512, size_round) != 0) { | |
4248 | fprintf(stderr, Name": could not allocate new mpb\n"); | |
4249 | return 0; | |
4250 | } | |
4251 | if (posix_memalign(&super->migr_rec_buf, 512, 512) != 0) { | |
4252 | fprintf(stderr, Name | |
4253 | ": %s could not allocate migr_rec buffer\n", | |
4254 | __func__); | |
4255 | free(super->buf); | |
4256 | free(super); | |
4257 | free(mpb_new); | |
4258 | return 0; | |
4259 | } | |
4260 | memcpy(mpb_new, mpb, size_old); | |
4261 | free(mpb); | |
4262 | mpb = mpb_new; | |
4263 | super->anchor = mpb_new; | |
4264 | mpb->mpb_size = __cpu_to_le32(size_new); | |
4265 | memset(mpb_new + size_old, 0, size_round - size_old); | |
4266 | } | |
4267 | super->current_vol = idx; | |
4268 | ||
4269 | /* handle 'failed_disks' by either: | |
4270 | * a) create dummy disk entries in the table if this the first | |
4271 | * volume in the array. We add them here as this is the only | |
4272 | * opportunity to add them. add_to_super_imsm_volume() | |
4273 | * handles the non-failed disks and continues incrementing | |
4274 | * mpb->num_disks. | |
4275 | * b) validate that 'failed_disks' matches the current number | |
4276 | * of missing disks if the container is populated | |
4277 | */ | |
4278 | if (super->current_vol == 0) { | |
4279 | mpb->num_disks = 0; | |
4280 | for (i = 0; i < info->failed_disks; i++) { | |
4281 | struct imsm_disk *disk; | |
4282 | ||
4283 | mpb->num_disks++; | |
4284 | disk = __get_imsm_disk(mpb, i); | |
4285 | disk->status = CONFIGURED_DISK | FAILED_DISK; | |
4286 | disk->scsi_id = __cpu_to_le32(~(__u32)0); | |
4287 | snprintf((char *) disk->serial, MAX_RAID_SERIAL_LEN, | |
4288 | "missing:%d", i); | |
4289 | } | |
4290 | find_missing(super); | |
4291 | } else { | |
4292 | int missing = 0; | |
4293 | struct dl *d; | |
4294 | ||
4295 | for (d = super->missing; d; d = d->next) | |
4296 | missing++; | |
4297 | if (info->failed_disks > missing) { | |
4298 | fprintf(stderr, Name": unable to add 'missing' disk to container\n"); | |
4299 | return 0; | |
4300 | } | |
4301 | } | |
4302 | ||
4303 | if (!check_name(super, name, 0)) | |
4304 | return 0; | |
4305 | dv = malloc(sizeof(*dv)); | |
4306 | if (!dv) { | |
4307 | fprintf(stderr, Name ": failed to allocate device list entry\n"); | |
4308 | return 0; | |
4309 | } | |
4310 | dev = calloc(1, sizeof(*dev) + sizeof(__u32) * (info->raid_disks - 1)); | |
4311 | if (!dev) { | |
4312 | free(dv); | |
4313 | fprintf(stderr, Name": could not allocate raid device\n"); | |
4314 | return 0; | |
4315 | } | |
4316 | ||
4317 | strncpy((char *) dev->volume, name, MAX_RAID_SERIAL_LEN); | |
4318 | if (info->level == 1) | |
4319 | array_blocks = info_to_blocks_per_member(info); | |
4320 | else | |
4321 | array_blocks = calc_array_size(info->level, info->raid_disks, | |
4322 | info->layout, info->chunk_size, | |
4323 | info->size*2); | |
4324 | /* round array size down to closest MB */ | |
4325 | array_blocks = (array_blocks >> SECT_PER_MB_SHIFT) << SECT_PER_MB_SHIFT; | |
4326 | ||
4327 | dev->size_low = __cpu_to_le32((__u32) array_blocks); | |
4328 | dev->size_high = __cpu_to_le32((__u32) (array_blocks >> 32)); | |
4329 | dev->status = (DEV_READ_COALESCING | DEV_WRITE_COALESCING); | |
4330 | vol = &dev->vol; | |
4331 | vol->migr_state = 0; | |
4332 | set_migr_type(dev, MIGR_INIT); | |
4333 | vol->dirty = !info->state; | |
4334 | vol->curr_migr_unit = 0; | |
4335 | map = get_imsm_map(dev, 0); | |
4336 | map->pba_of_lba0 = __cpu_to_le32(super->create_offset); | |
4337 | map->blocks_per_member = __cpu_to_le32(info_to_blocks_per_member(info)); | |
4338 | map->blocks_per_strip = __cpu_to_le16(info_to_blocks_per_strip(info)); | |
4339 | map->failed_disk_num = ~0; | |
4340 | if (info->level > 0) | |
4341 | map->map_state = IMSM_T_STATE_UNINITIALIZED; | |
4342 | else | |
4343 | map->map_state = info->failed_disks ? IMSM_T_STATE_FAILED : | |
4344 | IMSM_T_STATE_NORMAL; | |
4345 | map->ddf = 1; | |
4346 | ||
4347 | if (info->level == 1 && info->raid_disks > 2) { | |
4348 | free(dev); | |
4349 | free(dv); | |
4350 | fprintf(stderr, Name": imsm does not support more than 2 disks" | |
4351 | "in a raid1 volume\n"); | |
4352 | return 0; | |
4353 | } | |
4354 | ||
4355 | map->raid_level = info->level; | |
4356 | if (info->level == 10) { | |
4357 | map->raid_level = 1; | |
4358 | map->num_domains = info->raid_disks / 2; | |
4359 | } else if (info->level == 1) | |
4360 | map->num_domains = info->raid_disks; | |
4361 | else | |
4362 | map->num_domains = 1; | |
4363 | ||
4364 | num_data_stripes = info_to_num_data_stripes(info, map->num_domains); | |
4365 | map->num_data_stripes = __cpu_to_le32(num_data_stripes); | |
4366 | ||
4367 | map->num_members = info->raid_disks; | |
4368 | for (i = 0; i < map->num_members; i++) { | |
4369 | /* initialized in add_to_super */ | |
4370 | set_imsm_ord_tbl_ent(map, i, IMSM_ORD_REBUILD); | |
4371 | } | |
4372 | mpb->num_raid_devs++; | |
4373 | ||
4374 | dv->dev = dev; | |
4375 | dv->index = super->current_vol; | |
4376 | dv->next = super->devlist; | |
4377 | super->devlist = dv; | |
4378 | ||
4379 | imsm_update_version_info(super); | |
4380 | ||
4381 | return 1; | |
4382 | } | |
4383 | ||
4384 | static int init_super_imsm(struct supertype *st, mdu_array_info_t *info, | |
4385 | unsigned long long size, char *name, | |
4386 | char *homehost, int *uuid) | |
4387 | { | |
4388 | /* This is primarily called by Create when creating a new array. | |
4389 | * We will then get add_to_super called for each component, and then | |
4390 | * write_init_super called to write it out to each device. | |
4391 | * For IMSM, Create can create on fresh devices or on a pre-existing | |
4392 | * array. | |
4393 | * To create on a pre-existing array a different method will be called. | |
4394 | * This one is just for fresh drives. | |
4395 | */ | |
4396 | struct intel_super *super; | |
4397 | struct imsm_super *mpb; | |
4398 | size_t mpb_size; | |
4399 | char *version; | |
4400 | ||
4401 | if (st->sb) | |
4402 | return init_super_imsm_volume(st, info, size, name, homehost, uuid); | |
4403 | ||
4404 | if (info) | |
4405 | mpb_size = disks_to_mpb_size(info->nr_disks); | |
4406 | else | |
4407 | mpb_size = 512; | |
4408 | ||
4409 | super = alloc_super(); | |
4410 | if (super && posix_memalign(&super->buf, 512, mpb_size) != 0) { | |
4411 | free(super); | |
4412 | super = NULL; | |
4413 | } | |
4414 | if (!super) { | |
4415 | fprintf(stderr, Name | |
4416 | ": %s could not allocate superblock\n", __func__); | |
4417 | return 0; | |
4418 | } | |
4419 | if (posix_memalign(&super->migr_rec_buf, 512, 512) != 0) { | |
4420 | fprintf(stderr, Name | |
4421 | ": %s could not allocate migr_rec buffer\n", __func__); | |
4422 | free(super->buf); | |
4423 | free(super); | |
4424 | return 0; | |
4425 | } | |
4426 | memset(super->buf, 0, mpb_size); | |
4427 | mpb = super->buf; | |
4428 | mpb->mpb_size = __cpu_to_le32(mpb_size); | |
4429 | st->sb = super; | |
4430 | ||
4431 | if (info == NULL) { | |
4432 | /* zeroing superblock */ | |
4433 | return 0; | |
4434 | } | |
4435 | ||
4436 | mpb->attributes = MPB_ATTRIB_CHECKSUM_VERIFY; | |
4437 | ||
4438 | version = (char *) mpb->sig; | |
4439 | strcpy(version, MPB_SIGNATURE); | |
4440 | version += strlen(MPB_SIGNATURE); | |
4441 | strcpy(version, MPB_VERSION_RAID0); | |
4442 | ||
4443 | return 1; | |
4444 | } | |
4445 | ||
4446 | #ifndef MDASSEMBLE | |
4447 | static int add_to_super_imsm_volume(struct supertype *st, mdu_disk_info_t *dk, | |
4448 | int fd, char *devname) | |
4449 | { | |
4450 | struct intel_super *super = st->sb; | |
4451 | struct imsm_super *mpb = super->anchor; | |
4452 | struct imsm_disk *_disk; | |
4453 | struct imsm_dev *dev; | |
4454 | struct imsm_map *map; | |
4455 | struct dl *dl, *df; | |
4456 | int slot; | |
4457 | ||
4458 | dev = get_imsm_dev(super, super->current_vol); | |
4459 | map = get_imsm_map(dev, 0); | |
4460 | ||
4461 | if (! (dk->state & (1<<MD_DISK_SYNC))) { | |
4462 | fprintf(stderr, Name ": %s: Cannot add spare devices to IMSM volume\n", | |
4463 | devname); | |
4464 | return 1; | |
4465 | } | |
4466 | ||
4467 | if (fd == -1) { | |
4468 | /* we're doing autolayout so grab the pre-marked (in | |
4469 | * validate_geometry) raid_disk | |
4470 | */ | |
4471 | for (dl = super->disks; dl; dl = dl->next) | |
4472 | if (dl->raiddisk == dk->raid_disk) | |
4473 | break; | |
4474 | } else { | |
4475 | for (dl = super->disks; dl ; dl = dl->next) | |
4476 | if (dl->major == dk->major && | |
4477 | dl->minor == dk->minor) | |
4478 | break; | |
4479 | } | |
4480 | ||
4481 | if (!dl) { | |
4482 | fprintf(stderr, Name ": %s is not a member of the same container\n", devname); | |
4483 | return 1; | |
4484 | } | |
4485 | ||
4486 | /* add a pristine spare to the metadata */ | |
4487 | if (dl->index < 0) { | |
4488 | dl->index = super->anchor->num_disks; | |
4489 | super->anchor->num_disks++; | |
4490 | } | |
4491 | /* Check the device has not already been added */ | |
4492 | slot = get_imsm_disk_slot(map, dl->index); | |
4493 | if (slot >= 0 && | |
4494 | (get_imsm_ord_tbl_ent(dev, slot, -1) & IMSM_ORD_REBUILD) == 0) { | |
4495 | fprintf(stderr, Name ": %s has been included in this array twice\n", | |
4496 | devname); | |
4497 | return 1; | |
4498 | } | |
4499 | set_imsm_ord_tbl_ent(map, dk->raid_disk, dl->index); | |
4500 | dl->disk.status = CONFIGURED_DISK; | |
4501 | ||
4502 | /* update size of 'missing' disks to be at least as large as the | |
4503 | * largest acitve member (we only have dummy missing disks when | |
4504 | * creating the first volume) | |
4505 | */ | |
4506 | if (super->current_vol == 0) { | |
4507 | for (df = super->missing; df; df = df->next) { | |
4508 | if (dl->disk.total_blocks > df->disk.total_blocks) | |
4509 | df->disk.total_blocks = dl->disk.total_blocks; | |
4510 | _disk = __get_imsm_disk(mpb, df->index); | |
4511 | *_disk = df->disk; | |
4512 | } | |
4513 | } | |
4514 | ||
4515 | /* refresh unset/failed slots to point to valid 'missing' entries */ | |
4516 | for (df = super->missing; df; df = df->next) | |
4517 | for (slot = 0; slot < mpb->num_disks; slot++) { | |
4518 | __u32 ord = get_imsm_ord_tbl_ent(dev, slot, -1); | |
4519 | ||
4520 | if ((ord & IMSM_ORD_REBUILD) == 0) | |
4521 | continue; | |
4522 | set_imsm_ord_tbl_ent(map, slot, df->index | IMSM_ORD_REBUILD); | |
4523 | if (is_gen_migration(dev)) { | |
4524 | struct imsm_map *map2 = get_imsm_map(dev, 1); | |
4525 | if (slot < map2->num_members) { | |
4526 | __u32 ord2 = get_imsm_ord_tbl_ent(dev, | |
4527 | slot, | |
4528 | 1); | |
4529 | if ((unsigned)df->index == | |
4530 | ord_to_idx(ord2)) | |
4531 | set_imsm_ord_tbl_ent(map2, | |
4532 | slot, | |
4533 | df->index | | |
4534 | IMSM_ORD_REBUILD); | |
4535 | } | |
4536 | } | |
4537 | dprintf("set slot:%d to missing disk:%d\n", slot, df->index); | |
4538 | break; | |
4539 | } | |
4540 | ||
4541 | /* if we are creating the first raid device update the family number */ | |
4542 | if (super->current_vol == 0) { | |
4543 | __u32 sum; | |
4544 | struct imsm_dev *_dev = __get_imsm_dev(mpb, 0); | |
4545 | ||
4546 | _disk = __get_imsm_disk(mpb, dl->index); | |
4547 | if (!_dev || !_disk) { | |
4548 | fprintf(stderr, Name ": BUG mpb setup error\n"); | |
4549 | return 1; | |
4550 | } | |
4551 | *_dev = *dev; | |
4552 | *_disk = dl->disk; | |
4553 | sum = random32(); | |
4554 | sum += __gen_imsm_checksum(mpb); | |
4555 | mpb->family_num = __cpu_to_le32(sum); | |
4556 | mpb->orig_family_num = mpb->family_num; | |
4557 | } | |
4558 | super->current_disk = dl; | |
4559 | return 0; | |
4560 | } | |
4561 | ||
4562 | /* mark_spare() | |
4563 | * Function marks disk as spare and restores disk serial | |
4564 | * in case it was previously marked as failed by takeover operation | |
4565 | * reruns: | |
4566 | * -1 : critical error | |
4567 | * 0 : disk is marked as spare but serial is not set | |
4568 | * 1 : success | |
4569 | */ | |
4570 | int mark_spare(struct dl *disk) | |
4571 | { | |
4572 | __u8 serial[MAX_RAID_SERIAL_LEN]; | |
4573 | int ret_val = -1; | |
4574 | ||
4575 | if (!disk) | |
4576 | return ret_val; | |
4577 | ||
4578 | ret_val = 0; | |
4579 | if (!imsm_read_serial(disk->fd, NULL, serial)) { | |
4580 | /* Restore disk serial number, because takeover marks disk | |
4581 | * as failed and adds to serial ':0' before it becomes | |
4582 | * a spare disk. | |
4583 | */ | |
4584 | serialcpy(disk->serial, serial); | |
4585 | serialcpy(disk->disk.serial, serial); | |
4586 | ret_val = 1; | |
4587 | } | |
4588 | disk->disk.status = SPARE_DISK; | |
4589 | disk->index = -1; | |
4590 | ||
4591 | return ret_val; | |
4592 | } | |
4593 | ||
4594 | static int add_to_super_imsm(struct supertype *st, mdu_disk_info_t *dk, | |
4595 | int fd, char *devname) | |
4596 | { | |
4597 | struct intel_super *super = st->sb; | |
4598 | struct dl *dd; | |
4599 | unsigned long long size; | |
4600 | __u32 id; | |
4601 | int rv; | |
4602 | struct stat stb; | |
4603 | ||
4604 | /* If we are on an RAID enabled platform check that the disk is | |
4605 | * attached to the raid controller. | |
4606 | * We do not need to test disks attachment for container based additions, | |
4607 | * they shall be already tested when container was created/assembled. | |
4608 | */ | |
4609 | rv = find_intel_hba_capability(fd, super, devname); | |
4610 | /* no orom/efi or non-intel hba of the disk */ | |
4611 | if (rv != 0) { | |
4612 | dprintf("capability: %p fd: %d ret: %d\n", | |
4613 | super->orom, fd, rv); | |
4614 | return 1; | |
4615 | } | |
4616 | ||
4617 | if (super->current_vol >= 0) | |
4618 | return add_to_super_imsm_volume(st, dk, fd, devname); | |
4619 | ||
4620 | fstat(fd, &stb); | |
4621 | dd = malloc(sizeof(*dd)); | |
4622 | if (!dd) { | |
4623 | fprintf(stderr, | |
4624 | Name ": malloc failed %s:%d.\n", __func__, __LINE__); | |
4625 | return 1; | |
4626 | } | |
4627 | memset(dd, 0, sizeof(*dd)); | |
4628 | dd->major = major(stb.st_rdev); | |
4629 | dd->minor = minor(stb.st_rdev); | |
4630 | dd->devname = devname ? strdup(devname) : NULL; | |
4631 | dd->fd = fd; | |
4632 | dd->e = NULL; | |
4633 | dd->action = DISK_ADD; | |
4634 | rv = imsm_read_serial(fd, devname, dd->serial); | |
4635 | if (rv) { | |
4636 | fprintf(stderr, | |
4637 | Name ": failed to retrieve scsi serial, aborting\n"); | |
4638 | free(dd); | |
4639 | abort(); | |
4640 | } | |
4641 | ||
4642 | get_dev_size(fd, NULL, &size); | |
4643 | size /= 512; | |
4644 | serialcpy(dd->disk.serial, dd->serial); | |
4645 | dd->disk.total_blocks = __cpu_to_le32(size); | |
4646 | mark_spare(dd); | |
4647 | if (sysfs_disk_to_scsi_id(fd, &id) == 0) | |
4648 | dd->disk.scsi_id = __cpu_to_le32(id); | |
4649 | else | |
4650 | dd->disk.scsi_id = __cpu_to_le32(0); | |
4651 | ||
4652 | if (st->update_tail) { | |
4653 | dd->next = super->disk_mgmt_list; | |
4654 | super->disk_mgmt_list = dd; | |
4655 | } else { | |
4656 | dd->next = super->disks; | |
4657 | super->disks = dd; | |
4658 | super->updates_pending++; | |
4659 | } | |
4660 | ||
4661 | return 0; | |
4662 | } | |
4663 | ||
4664 | ||
4665 | static int remove_from_super_imsm(struct supertype *st, mdu_disk_info_t *dk) | |
4666 | { | |
4667 | struct intel_super *super = st->sb; | |
4668 | struct dl *dd; | |
4669 | ||
4670 | /* remove from super works only in mdmon - for communication | |
4671 | * manager - monitor. Check if communication memory buffer | |
4672 | * is prepared. | |
4673 | */ | |
4674 | if (!st->update_tail) { | |
4675 | fprintf(stderr, | |
4676 | Name ": %s shall be used in mdmon context only" | |
4677 | "(line %d).\n", __func__, __LINE__); | |
4678 | return 1; | |
4679 | } | |
4680 | dd = malloc(sizeof(*dd)); | |
4681 | if (!dd) { | |
4682 | fprintf(stderr, | |
4683 | Name ": malloc failed %s:%d.\n", __func__, __LINE__); | |
4684 | return 1; | |
4685 | } | |
4686 | memset(dd, 0, sizeof(*dd)); | |
4687 | dd->major = dk->major; | |
4688 | dd->minor = dk->minor; | |
4689 | dd->fd = -1; | |
4690 | mark_spare(dd); | |
4691 | dd->action = DISK_REMOVE; | |
4692 | ||
4693 | dd->next = super->disk_mgmt_list; | |
4694 | super->disk_mgmt_list = dd; | |
4695 | ||
4696 | ||
4697 | return 0; | |
4698 | } | |
4699 | ||
4700 | static int store_imsm_mpb(int fd, struct imsm_super *mpb); | |
4701 | ||
4702 | static union { | |
4703 | char buf[512]; | |
4704 | struct imsm_super anchor; | |
4705 | } spare_record __attribute__ ((aligned(512))); | |
4706 | ||
4707 | /* spare records have their own family number and do not have any defined raid | |
4708 | * devices | |
4709 | */ | |
4710 | static int write_super_imsm_spares(struct intel_super *super, int doclose) | |
4711 | { | |
4712 | struct imsm_super *mpb = super->anchor; | |
4713 | struct imsm_super *spare = &spare_record.anchor; | |
4714 | __u32 sum; | |
4715 | struct dl *d; | |
4716 | ||
4717 | spare->mpb_size = __cpu_to_le32(sizeof(struct imsm_super)), | |
4718 | spare->generation_num = __cpu_to_le32(1UL), | |
4719 | spare->attributes = MPB_ATTRIB_CHECKSUM_VERIFY; | |
4720 | spare->num_disks = 1, | |
4721 | spare->num_raid_devs = 0, | |
4722 | spare->cache_size = mpb->cache_size, | |
4723 | spare->pwr_cycle_count = __cpu_to_le32(1), | |
4724 | ||
4725 | snprintf((char *) spare->sig, MAX_SIGNATURE_LENGTH, | |
4726 | MPB_SIGNATURE MPB_VERSION_RAID0); | |
4727 | ||
4728 | for (d = super->disks; d; d = d->next) { | |
4729 | if (d->index != -1) | |
4730 | continue; | |
4731 | ||
4732 | spare->disk[0] = d->disk; | |
4733 | sum = __gen_imsm_checksum(spare); | |
4734 | spare->family_num = __cpu_to_le32(sum); | |
4735 | spare->orig_family_num = 0; | |
4736 | sum = __gen_imsm_checksum(spare); | |
4737 | spare->check_sum = __cpu_to_le32(sum); | |
4738 | ||
4739 | if (store_imsm_mpb(d->fd, spare)) { | |
4740 | fprintf(stderr, "%s: failed for device %d:%d %s\n", | |
4741 | __func__, d->major, d->minor, strerror(errno)); | |
4742 | return 1; | |
4743 | } | |
4744 | if (doclose) { | |
4745 | close(d->fd); | |
4746 | d->fd = -1; | |
4747 | } | |
4748 | } | |
4749 | ||
4750 | return 0; | |
4751 | } | |
4752 | ||
4753 | static int write_super_imsm(struct supertype *st, int doclose) | |
4754 | { | |
4755 | struct intel_super *super = st->sb; | |
4756 | struct imsm_super *mpb = super->anchor; | |
4757 | struct dl *d; | |
4758 | __u32 generation; | |
4759 | __u32 sum; | |
4760 | int spares = 0; | |
4761 | int i; | |
4762 | __u32 mpb_size = sizeof(struct imsm_super) - sizeof(struct imsm_disk); | |
4763 | int num_disks = 0; | |
4764 | int clear_migration_record = 1; | |
4765 | ||
4766 | /* 'generation' is incremented everytime the metadata is written */ | |
4767 | generation = __le32_to_cpu(mpb->generation_num); | |
4768 | generation++; | |
4769 | mpb->generation_num = __cpu_to_le32(generation); | |
4770 | ||
4771 | /* fix up cases where previous mdadm releases failed to set | |
4772 | * orig_family_num | |
4773 | */ | |
4774 | if (mpb->orig_family_num == 0) | |
4775 | mpb->orig_family_num = mpb->family_num; | |
4776 | ||
4777 | for (d = super->disks; d; d = d->next) { | |
4778 | if (d->index == -1) | |
4779 | spares++; | |
4780 | else { | |
4781 | mpb->disk[d->index] = d->disk; | |
4782 | num_disks++; | |
4783 | } | |
4784 | } | |
4785 | for (d = super->missing; d; d = d->next) { | |
4786 | mpb->disk[d->index] = d->disk; | |
4787 | num_disks++; | |
4788 | } | |
4789 | mpb->num_disks = num_disks; | |
4790 | mpb_size += sizeof(struct imsm_disk) * mpb->num_disks; | |
4791 | ||
4792 | for (i = 0; i < mpb->num_raid_devs; i++) { | |
4793 | struct imsm_dev *dev = __get_imsm_dev(mpb, i); | |
4794 | struct imsm_dev *dev2 = get_imsm_dev(super, i); | |
4795 | if (dev && dev2) { | |
4796 | imsm_copy_dev(dev, dev2); | |
4797 | mpb_size += sizeof_imsm_dev(dev, 0); | |
4798 | } | |
4799 | if (is_gen_migration(dev2)) | |
4800 | clear_migration_record = 0; | |
4801 | } | |
4802 | mpb_size += __le32_to_cpu(mpb->bbm_log_size); | |
4803 | mpb->mpb_size = __cpu_to_le32(mpb_size); | |
4804 | ||
4805 | /* recalculate checksum */ | |
4806 | sum = __gen_imsm_checksum(mpb); | |
4807 | mpb->check_sum = __cpu_to_le32(sum); | |
4808 | ||
4809 | if (clear_migration_record) | |
4810 | memset(super->migr_rec_buf, 0, 512); | |
4811 | ||
4812 | /* write the mpb for disks that compose raid devices */ | |
4813 | for (d = super->disks; d ; d = d->next) { | |
4814 | if (d->index < 0 || is_failed(&d->disk)) | |
4815 | continue; | |
4816 | if (store_imsm_mpb(d->fd, mpb)) | |
4817 | fprintf(stderr, "%s: failed for device %d:%d %s\n", | |
4818 | __func__, d->major, d->minor, strerror(errno)); | |
4819 | if (clear_migration_record) { | |
4820 | unsigned long long dsize; | |
4821 | ||
4822 | get_dev_size(d->fd, NULL, &dsize); | |
4823 | if (lseek64(d->fd, dsize - 512, SEEK_SET) >= 0) { | |
4824 | if (write(d->fd, super->migr_rec_buf, 512) != 512) | |
4825 | perror("Write migr_rec failed"); | |
4826 | } | |
4827 | } | |
4828 | if (doclose) { | |
4829 | close(d->fd); | |
4830 | d->fd = -1; | |
4831 | } | |
4832 | } | |
4833 | ||
4834 | if (spares) | |
4835 | return write_super_imsm_spares(super, doclose); | |
4836 | ||
4837 | return 0; | |
4838 | } | |
4839 | ||
4840 | ||
4841 | static int create_array(struct supertype *st, int dev_idx) | |
4842 | { | |
4843 | size_t len; | |
4844 | struct imsm_update_create_array *u; | |
4845 | struct intel_super *super = st->sb; | |
4846 | struct imsm_dev *dev = get_imsm_dev(super, dev_idx); | |
4847 | struct imsm_map *map = get_imsm_map(dev, 0); | |
4848 | struct disk_info *inf; | |
4849 | struct imsm_disk *disk; | |
4850 | int i; | |
4851 | ||
4852 | len = sizeof(*u) - sizeof(*dev) + sizeof_imsm_dev(dev, 0) + | |
4853 | sizeof(*inf) * map->num_members; | |
4854 | u = malloc(len); | |
4855 | if (!u) { | |
4856 | fprintf(stderr, "%s: failed to allocate update buffer\n", | |
4857 | __func__); | |
4858 | return 1; | |
4859 | } | |
4860 | ||
4861 | u->type = update_create_array; | |
4862 | u->dev_idx = dev_idx; | |
4863 | imsm_copy_dev(&u->dev, dev); | |
4864 | inf = get_disk_info(u); | |
4865 | for (i = 0; i < map->num_members; i++) { | |
4866 | int idx = get_imsm_disk_idx(dev, i, -1); | |
4867 | ||
4868 | disk = get_imsm_disk(super, idx); | |
4869 | serialcpy(inf[i].serial, disk->serial); | |
4870 | } | |
4871 | append_metadata_update(st, u, len); | |
4872 | ||
4873 | return 0; | |
4874 | } | |
4875 | ||
4876 | static int mgmt_disk(struct supertype *st) | |
4877 | { | |
4878 | struct intel_super *super = st->sb; | |
4879 | size_t len; | |
4880 | struct imsm_update_add_remove_disk *u; | |
4881 | ||
4882 | if (!super->disk_mgmt_list) | |
4883 | return 0; | |
4884 | ||
4885 | len = sizeof(*u); | |
4886 | u = malloc(len); | |
4887 | if (!u) { | |
4888 | fprintf(stderr, "%s: failed to allocate update buffer\n", | |
4889 | __func__); | |
4890 | return 1; | |
4891 | } | |
4892 | ||
4893 | u->type = update_add_remove_disk; | |
4894 | append_metadata_update(st, u, len); | |
4895 | ||
4896 | return 0; | |
4897 | } | |
4898 | ||
4899 | static int write_init_super_imsm(struct supertype *st) | |
4900 | { | |
4901 | struct intel_super *super = st->sb; | |
4902 | int current_vol = super->current_vol; | |
4903 | ||
4904 | /* we are done with current_vol reset it to point st at the container */ | |
4905 | super->current_vol = -1; | |
4906 | ||
4907 | if (st->update_tail) { | |
4908 | /* queue the recently created array / added disk | |
4909 | * as a metadata update */ | |
4910 | int rv; | |
4911 | ||
4912 | /* determine if we are creating a volume or adding a disk */ | |
4913 | if (current_vol < 0) { | |
4914 | /* in the mgmt (add/remove) disk case we are running | |
4915 | * in mdmon context, so don't close fd's | |
4916 | */ | |
4917 | return mgmt_disk(st); | |
4918 | } else | |
4919 | rv = create_array(st, current_vol); | |
4920 | ||
4921 | return rv; | |
4922 | } else { | |
4923 | struct dl *d; | |
4924 | for (d = super->disks; d; d = d->next) | |
4925 | Kill(d->devname, NULL, 0, 1, 1); | |
4926 | return write_super_imsm(st, 1); | |
4927 | } | |
4928 | } | |
4929 | #endif | |
4930 | ||
4931 | static int store_super_imsm(struct supertype *st, int fd) | |
4932 | { | |
4933 | struct intel_super *super = st->sb; | |
4934 | struct imsm_super *mpb = super ? super->anchor : NULL; | |
4935 | ||
4936 | if (!mpb) | |
4937 | return 1; | |
4938 | ||
4939 | #ifndef MDASSEMBLE | |
4940 | return store_imsm_mpb(fd, mpb); | |
4941 | #else | |
4942 | return 1; | |
4943 | #endif | |
4944 | } | |
4945 | ||
4946 | static int imsm_bbm_log_size(struct imsm_super *mpb) | |
4947 | { | |
4948 | return __le32_to_cpu(mpb->bbm_log_size); | |
4949 | } | |
4950 | ||
4951 | #ifndef MDASSEMBLE | |
4952 | static int validate_geometry_imsm_container(struct supertype *st, int level, | |
4953 | int layout, int raiddisks, int chunk, | |
4954 | unsigned long long size, char *dev, | |
4955 | unsigned long long *freesize, | |
4956 | int verbose) | |
4957 | { | |
4958 | int fd; | |
4959 | unsigned long long ldsize; | |
4960 | struct intel_super *super=NULL; | |
4961 | int rv = 0; | |
4962 | ||
4963 | if (level != LEVEL_CONTAINER) | |
4964 | return 0; | |
4965 | if (!dev) | |
4966 | return 1; | |
4967 | ||
4968 | fd = open(dev, O_RDONLY|O_EXCL, 0); | |
4969 | if (fd < 0) { | |
4970 | if (verbose) | |
4971 | fprintf(stderr, Name ": imsm: Cannot open %s: %s\n", | |
4972 | dev, strerror(errno)); | |
4973 | return 0; | |
4974 | } | |
4975 | if (!get_dev_size(fd, dev, &ldsize)) { | |
4976 | close(fd); | |
4977 | return 0; | |
4978 | } | |
4979 | ||
4980 | /* capabilities retrieve could be possible | |
4981 | * note that there is no fd for the disks in array. | |
4982 | */ | |
4983 | super = alloc_super(); | |
4984 | if (!super) { | |
4985 | fprintf(stderr, | |
4986 | Name ": malloc of %zu failed.\n", | |
4987 | sizeof(*super)); | |
4988 | close(fd); | |
4989 | return 0; | |
4990 | } | |
4991 | ||
4992 | rv = find_intel_hba_capability(fd, super, verbose ? dev : NULL); | |
4993 | if (rv != 0) { | |
4994 | #if DEBUG | |
4995 | char str[256]; | |
4996 | fd2devname(fd, str); | |
4997 | dprintf("validate_geometry_imsm_container: fd: %d %s orom: %p rv: %d raiddisk: %d\n", | |
4998 | fd, str, super->orom, rv, raiddisks); | |
4999 | #endif | |
5000 | /* no orom/efi or non-intel hba of the disk */ | |
5001 | close(fd); | |
5002 | free_imsm(super); | |
5003 | return 0; | |
5004 | } | |
5005 | close(fd); | |
5006 | if (super->orom && raiddisks > super->orom->tds) { | |
5007 | if (verbose) | |
5008 | fprintf(stderr, Name ": %d exceeds maximum number of" | |
5009 | " platform supported disks: %d\n", | |
5010 | raiddisks, super->orom->tds); | |
5011 | ||
5012 | free_imsm(super); | |
5013 | return 0; | |
5014 | } | |
5015 | ||
5016 | *freesize = avail_size_imsm(st, ldsize >> 9); | |
5017 | free_imsm(super); | |
5018 | ||
5019 | return 1; | |
5020 | } | |
5021 | ||
5022 | static unsigned long long find_size(struct extent *e, int *idx, int num_extents) | |
5023 | { | |
5024 | const unsigned long long base_start = e[*idx].start; | |
5025 | unsigned long long end = base_start + e[*idx].size; | |
5026 | int i; | |
5027 | ||
5028 | if (base_start == end) | |
5029 | return 0; | |
5030 | ||
5031 | *idx = *idx + 1; | |
5032 | for (i = *idx; i < num_extents; i++) { | |
5033 | /* extend overlapping extents */ | |
5034 | if (e[i].start >= base_start && | |
5035 | e[i].start <= end) { | |
5036 | if (e[i].size == 0) | |
5037 | return 0; | |
5038 | if (e[i].start + e[i].size > end) | |
5039 | end = e[i].start + e[i].size; | |
5040 | } else if (e[i].start > end) { | |
5041 | *idx = i; | |
5042 | break; | |
5043 | } | |
5044 | } | |
5045 | ||
5046 | return end - base_start; | |
5047 | } | |
5048 | ||
5049 | static unsigned long long merge_extents(struct intel_super *super, int sum_extents) | |
5050 | { | |
5051 | /* build a composite disk with all known extents and generate a new | |
5052 | * 'maxsize' given the "all disks in an array must share a common start | |
5053 | * offset" constraint | |
5054 | */ | |
5055 | struct extent *e = calloc(sum_extents, sizeof(*e)); | |
5056 | struct dl *dl; | |
5057 | int i, j; | |
5058 | int start_extent; | |
5059 | unsigned long long pos; | |
5060 | unsigned long long start = 0; | |
5061 | unsigned long long maxsize; | |
5062 | unsigned long reserve; | |
5063 | ||
5064 | if (!e) | |
5065 | return 0; | |
5066 | ||
5067 | /* coalesce and sort all extents. also, check to see if we need to | |
5068 | * reserve space between member arrays | |
5069 | */ | |
5070 | j = 0; | |
5071 | for (dl = super->disks; dl; dl = dl->next) { | |
5072 | if (!dl->e) | |
5073 | continue; | |
5074 | for (i = 0; i < dl->extent_cnt; i++) | |
5075 | e[j++] = dl->e[i]; | |
5076 | } | |
5077 | qsort(e, sum_extents, sizeof(*e), cmp_extent); | |
5078 | ||
5079 | /* merge extents */ | |
5080 | i = 0; | |
5081 | j = 0; | |
5082 | while (i < sum_extents) { | |
5083 | e[j].start = e[i].start; | |
5084 | e[j].size = find_size(e, &i, sum_extents); | |
5085 | j++; | |
5086 | if (e[j-1].size == 0) | |
5087 | break; | |
5088 | } | |
5089 | ||
5090 | pos = 0; | |
5091 | maxsize = 0; | |
5092 | start_extent = 0; | |
5093 | i = 0; | |
5094 | do { | |
5095 | unsigned long long esize; | |
5096 | ||
5097 | esize = e[i].start - pos; | |
5098 | if (esize >= maxsize) { | |
5099 | maxsize = esize; | |
5100 | start = pos; | |
5101 | start_extent = i; | |
5102 | } | |
5103 | pos = e[i].start + e[i].size; | |
5104 | i++; | |
5105 | } while (e[i-1].size); | |
5106 | free(e); | |
5107 | ||
5108 | if (maxsize == 0) | |
5109 | return 0; | |
5110 | ||
5111 | /* FIXME assumes volume at offset 0 is the first volume in a | |
5112 | * container | |
5113 | */ | |
5114 | if (start_extent > 0) | |
5115 | reserve = IMSM_RESERVED_SECTORS; /* gap between raid regions */ | |
5116 | else | |
5117 | reserve = 0; | |
5118 | ||
5119 | if (maxsize < reserve) | |
5120 | return 0; | |
5121 | ||
5122 | super->create_offset = ~((__u32) 0); | |
5123 | if (start + reserve > super->create_offset) | |
5124 | return 0; /* start overflows create_offset */ | |
5125 | super->create_offset = start + reserve; | |
5126 | ||
5127 | return maxsize - reserve; | |
5128 | } | |
5129 | ||
5130 | static int is_raid_level_supported(const struct imsm_orom *orom, int level, int raiddisks) | |
5131 | { | |
5132 | if (level < 0 || level == 6 || level == 4) | |
5133 | return 0; | |
5134 | ||
5135 | /* if we have an orom prevent invalid raid levels */ | |
5136 | if (orom) | |
5137 | switch (level) { | |
5138 | case 0: return imsm_orom_has_raid0(orom); | |
5139 | case 1: | |
5140 | if (raiddisks > 2) | |
5141 | return imsm_orom_has_raid1e(orom); | |
5142 | return imsm_orom_has_raid1(orom) && raiddisks == 2; | |
5143 | case 10: return imsm_orom_has_raid10(orom) && raiddisks == 4; | |
5144 | case 5: return imsm_orom_has_raid5(orom) && raiddisks > 2; | |
5145 | } | |
5146 | else | |
5147 | return 1; /* not on an Intel RAID platform so anything goes */ | |
5148 | ||
5149 | return 0; | |
5150 | } | |
5151 | ||
5152 | static int imsm_default_chunk(const struct imsm_orom *orom) | |
5153 | { | |
5154 | /* up to 512 if the plaform supports it, otherwise the platform max. | |
5155 | * 128 if no platform detected | |
5156 | */ | |
5157 | int fs = max(7, orom ? fls(orom->sss) : 0); | |
5158 | ||
5159 | return min(512, (1 << fs)); | |
5160 | } | |
5161 | ||
5162 | #define pr_vrb(fmt, arg...) (void) (verbose && fprintf(stderr, Name fmt, ##arg)) | |
5163 | static int | |
5164 | validate_geometry_imsm_orom(struct intel_super *super, int level, int layout, | |
5165 | int raiddisks, int *chunk, int verbose) | |
5166 | { | |
5167 | /* check/set platform and metadata limits/defaults */ | |
5168 | if (super->orom && raiddisks > super->orom->dpa) { | |
5169 | pr_vrb(": platform supports a maximum of %d disks per array\n", | |
5170 | super->orom->dpa); | |
5171 | return 0; | |
5172 | } | |
5173 | ||
5174 | /* capabilities of OROM tested - copied from validate_geometry_imsm_volume */ | |
5175 | if (!is_raid_level_supported(super->orom, level, raiddisks)) { | |
5176 | pr_vrb(": platform does not support raid%d with %d disk%s\n", | |
5177 | level, raiddisks, raiddisks > 1 ? "s" : ""); | |
5178 | return 0; | |
5179 | } | |
5180 | ||
5181 | if (chunk && (*chunk == 0 || *chunk == UnSet)) | |
5182 | *chunk = imsm_default_chunk(super->orom); | |
5183 | ||
5184 | if (super->orom && chunk && !imsm_orom_has_chunk(super->orom, *chunk)) { | |
5185 | pr_vrb(": platform does not support a chunk size of: " | |
5186 | "%d\n", *chunk); | |
5187 | return 0; | |
5188 | } | |
5189 | ||
5190 | if (layout != imsm_level_to_layout(level)) { | |
5191 | if (level == 5) | |
5192 | pr_vrb(": imsm raid 5 only supports the left-asymmetric layout\n"); | |
5193 | else if (level == 10) | |
5194 | pr_vrb(": imsm raid 10 only supports the n2 layout\n"); | |
5195 | else | |
5196 | pr_vrb(": imsm unknown layout %#x for this raid level %d\n", | |
5197 | layout, level); | |
5198 | return 0; | |
5199 | } | |
5200 | return 1; | |
5201 | } | |
5202 | ||
5203 | /* validate_geometry_imsm_volume - lifted from validate_geometry_ddf_bvd | |
5204 | * FIX ME add ahci details | |
5205 | */ | |
5206 | static int validate_geometry_imsm_volume(struct supertype *st, int level, | |
5207 | int layout, int raiddisks, int *chunk, | |
5208 | unsigned long long size, char *dev, | |
5209 | unsigned long long *freesize, | |
5210 | int verbose) | |
5211 | { | |
5212 | struct stat stb; | |
5213 | struct intel_super *super = st->sb; | |
5214 | struct imsm_super *mpb; | |
5215 | struct dl *dl; | |
5216 | unsigned long long pos = 0; | |
5217 | unsigned long long maxsize; | |
5218 | struct extent *e; | |
5219 | int i; | |
5220 | ||
5221 | /* We must have the container info already read in. */ | |
5222 | if (!super) | |
5223 | return 0; | |
5224 | ||
5225 | mpb = super->anchor; | |
5226 | ||
5227 | if (mpb->num_raid_devs > 0 && mpb->num_disks != raiddisks) { | |
5228 | fprintf(stderr, Name ": the option-rom requires all " | |
5229 | "member disks to be a member of all volumes.\n"); | |
5230 | return 0; | |
5231 | } | |
5232 | ||
5233 | if (!validate_geometry_imsm_orom(super, level, layout, raiddisks, chunk, verbose)) { | |
5234 | fprintf(stderr, Name ": RAID gemetry validation failed. " | |
5235 | "Cannot proceed with the action(s).\n"); | |
5236 | return 0; | |
5237 | } | |
5238 | if (!dev) { | |
5239 | /* General test: make sure there is space for | |
5240 | * 'raiddisks' device extents of size 'size' at a given | |
5241 | * offset | |
5242 | */ | |
5243 | unsigned long long minsize = size; | |
5244 | unsigned long long start_offset = MaxSector; | |
5245 | int dcnt = 0; | |
5246 | if (minsize == 0) | |
5247 | minsize = MPB_SECTOR_CNT + IMSM_RESERVED_SECTORS; | |
5248 | for (dl = super->disks; dl ; dl = dl->next) { | |
5249 | int found = 0; | |
5250 | ||
5251 | pos = 0; | |
5252 | i = 0; | |
5253 | e = get_extents(super, dl); | |
5254 | if (!e) continue; | |
5255 | do { | |
5256 | unsigned long long esize; | |
5257 | esize = e[i].start - pos; | |
5258 | if (esize >= minsize) | |
5259 | found = 1; | |
5260 | if (found && start_offset == MaxSector) { | |
5261 | start_offset = pos; | |
5262 | break; | |
5263 | } else if (found && pos != start_offset) { | |
5264 | found = 0; | |
5265 | break; | |
5266 | } | |
5267 | pos = e[i].start + e[i].size; | |
5268 | i++; | |
5269 | } while (e[i-1].size); | |
5270 | if (found) | |
5271 | dcnt++; | |
5272 | free(e); | |
5273 | } | |
5274 | if (dcnt < raiddisks) { | |
5275 | if (verbose) | |
5276 | fprintf(stderr, Name ": imsm: Not enough " | |
5277 | "devices with space for this array " | |
5278 | "(%d < %d)\n", | |
5279 | dcnt, raiddisks); | |
5280 | return 0; | |
5281 | } | |
5282 | return 1; | |
5283 | } | |
5284 | ||
5285 | /* This device must be a member of the set */ | |
5286 | if (stat(dev, &stb) < 0) | |
5287 | return 0; | |
5288 | if ((S_IFMT & stb.st_mode) != S_IFBLK) | |
5289 | return 0; | |
5290 | for (dl = super->disks ; dl ; dl = dl->next) { | |
5291 | if (dl->major == (int)major(stb.st_rdev) && | |
5292 | dl->minor == (int)minor(stb.st_rdev)) | |
5293 | break; | |
5294 | } | |
5295 | if (!dl) { | |
5296 | if (verbose) | |
5297 | fprintf(stderr, Name ": %s is not in the " | |
5298 | "same imsm set\n", dev); | |
5299 | return 0; | |
5300 | } else if (super->orom && dl->index < 0 && mpb->num_raid_devs) { | |
5301 | /* If a volume is present then the current creation attempt | |
5302 | * cannot incorporate new spares because the orom may not | |
5303 | * understand this configuration (all member disks must be | |
5304 | * members of each array in the container). | |
5305 | */ | |
5306 | fprintf(stderr, Name ": %s is a spare and a volume" | |
5307 | " is already defined for this container\n", dev); | |
5308 | fprintf(stderr, Name ": The option-rom requires all member" | |
5309 | " disks to be a member of all volumes\n"); | |
5310 | return 0; | |
5311 | } | |
5312 | ||
5313 | /* retrieve the largest free space block */ | |
5314 | e = get_extents(super, dl); | |
5315 | maxsize = 0; | |
5316 | i = 0; | |
5317 | if (e) { | |
5318 | do { | |
5319 | unsigned long long esize; | |
5320 | ||
5321 | esize = e[i].start - pos; | |
5322 | if (esize >= maxsize) | |
5323 | maxsize = esize; | |
5324 | pos = e[i].start + e[i].size; | |
5325 | i++; | |
5326 | } while (e[i-1].size); | |
5327 | dl->e = e; | |
5328 | dl->extent_cnt = i; | |
5329 | } else { | |
5330 | if (verbose) | |
5331 | fprintf(stderr, Name ": unable to determine free space for: %s\n", | |
5332 | dev); | |
5333 | return 0; | |
5334 | } | |
5335 | if (maxsize < size) { | |
5336 | if (verbose) | |
5337 | fprintf(stderr, Name ": %s not enough space (%llu < %llu)\n", | |
5338 | dev, maxsize, size); | |
5339 | return 0; | |
5340 | } | |
5341 | ||
5342 | /* count total number of extents for merge */ | |
5343 | i = 0; | |
5344 | for (dl = super->disks; dl; dl = dl->next) | |
5345 | if (dl->e) | |
5346 | i += dl->extent_cnt; | |
5347 | ||
5348 | maxsize = merge_extents(super, i); | |
5349 | ||
5350 | if (!check_env("IMSM_NO_PLATFORM") && | |
5351 | mpb->num_raid_devs > 0 && size && size != maxsize) { | |
5352 | fprintf(stderr, Name ": attempting to create a second " | |
5353 | "volume with size less then remaining space. " | |
5354 | "Aborting...\n"); | |
5355 | return 0; | |
5356 | } | |
5357 | ||
5358 | if (maxsize < size || maxsize == 0) { | |
5359 | if (verbose) | |
5360 | fprintf(stderr, Name ": not enough space after merge (%llu < %llu)\n", | |
5361 | maxsize, size); | |
5362 | return 0; | |
5363 | } | |
5364 | ||
5365 | *freesize = maxsize; | |
5366 | ||
5367 | return 1; | |
5368 | } | |
5369 | ||
5370 | static int reserve_space(struct supertype *st, int raiddisks, | |
5371 | unsigned long long size, int chunk, | |
5372 | unsigned long long *freesize) | |
5373 | { | |
5374 | struct intel_super *super = st->sb; | |
5375 | struct imsm_super *mpb = super->anchor; | |
5376 | struct dl *dl; | |
5377 | int i; | |
5378 | int extent_cnt; | |
5379 | struct extent *e; | |
5380 | unsigned long long maxsize; | |
5381 | unsigned long long minsize; | |
5382 | int cnt; | |
5383 | int used; | |
5384 | ||
5385 | /* find the largest common start free region of the possible disks */ | |
5386 | used = 0; | |
5387 | extent_cnt = 0; | |
5388 | cnt = 0; | |
5389 | for (dl = super->disks; dl; dl = dl->next) { | |
5390 | dl->raiddisk = -1; | |
5391 | ||
5392 | if (dl->index >= 0) | |
5393 | used++; | |
5394 | ||
5395 | /* don't activate new spares if we are orom constrained | |
5396 | * and there is already a volume active in the container | |
5397 | */ | |
5398 | if (super->orom && dl->index < 0 && mpb->num_raid_devs) | |
5399 | continue; | |
5400 | ||
5401 | e = get_extents(super, dl); | |
5402 | if (!e) | |
5403 | continue; | |
5404 | for (i = 1; e[i-1].size; i++) | |
5405 | ; | |
5406 | dl->e = e; | |
5407 | dl->extent_cnt = i; | |
5408 | extent_cnt += i; | |
5409 | cnt++; | |
5410 | } | |
5411 | ||
5412 | maxsize = merge_extents(super, extent_cnt); | |
5413 | minsize = size; | |
5414 | if (size == 0) | |
5415 | /* chunk is in K */ | |
5416 | minsize = chunk * 2; | |
5417 | ||
5418 | if (cnt < raiddisks || | |
5419 | (super->orom && used && used != raiddisks) || | |
5420 | maxsize < minsize || | |
5421 | maxsize == 0) { | |
5422 | fprintf(stderr, Name ": not enough devices with space to create array.\n"); | |
5423 | return 0; /* No enough free spaces large enough */ | |
5424 | } | |
5425 | ||
5426 | if (size == 0) { | |
5427 | size = maxsize; | |
5428 | if (chunk) { | |
5429 | size /= 2 * chunk; | |
5430 | size *= 2 * chunk; | |
5431 | } | |
5432 | } | |
5433 | ||
5434 | cnt = 0; | |
5435 | for (dl = super->disks; dl; dl = dl->next) | |
5436 | if (dl->e) | |
5437 | dl->raiddisk = cnt++; | |
5438 | ||
5439 | *freesize = size; | |
5440 | ||
5441 | return 1; | |
5442 | } | |
5443 | ||
5444 | static int validate_geometry_imsm(struct supertype *st, int level, int layout, | |
5445 | int raiddisks, int *chunk, unsigned long long size, | |
5446 | char *dev, unsigned long long *freesize, | |
5447 | int verbose) | |
5448 | { | |
5449 | int fd, cfd; | |
5450 | struct mdinfo *sra; | |
5451 | int is_member = 0; | |
5452 | ||
5453 | /* load capability | |
5454 | * if given unused devices create a container | |
5455 | * if given given devices in a container create a member volume | |
5456 | */ | |
5457 | if (level == LEVEL_CONTAINER) { | |
5458 | /* Must be a fresh device to add to a container */ | |
5459 | return validate_geometry_imsm_container(st, level, layout, | |
5460 | raiddisks, | |
5461 | chunk?*chunk:0, size, | |
5462 | dev, freesize, | |
5463 | verbose); | |
5464 | } | |
5465 | ||
5466 | if (!dev) { | |
5467 | if (st->sb) { | |
5468 | if (!validate_geometry_imsm_orom(st->sb, level, layout, | |
5469 | raiddisks, chunk, | |
5470 | verbose)) | |
5471 | return 0; | |
5472 | /* we are being asked to automatically layout a | |
5473 | * new volume based on the current contents of | |
5474 | * the container. If the the parameters can be | |
5475 | * satisfied reserve_space will record the disks, | |
5476 | * start offset, and size of the volume to be | |
5477 | * created. add_to_super and getinfo_super | |
5478 | * detect when autolayout is in progress. | |
5479 | */ | |
5480 | if (freesize) | |
5481 | return reserve_space(st, raiddisks, size, | |
5482 | chunk?*chunk:0, freesize); | |
5483 | } | |
5484 | return 1; | |
5485 | } | |
5486 | if (st->sb) { | |
5487 | /* creating in a given container */ | |
5488 | return validate_geometry_imsm_volume(st, level, layout, | |
5489 | raiddisks, chunk, size, | |
5490 | dev, freesize, verbose); | |
5491 | } | |
5492 | ||
5493 | /* This device needs to be a device in an 'imsm' container */ | |
5494 | fd = open(dev, O_RDONLY|O_EXCL, 0); | |
5495 | if (fd >= 0) { | |
5496 | if (verbose) | |
5497 | fprintf(stderr, | |
5498 | Name ": Cannot create this array on device %s\n", | |
5499 | dev); | |
5500 | close(fd); | |
5501 | return 0; | |
5502 | } | |
5503 | if (errno != EBUSY || (fd = open(dev, O_RDONLY, 0)) < 0) { | |
5504 | if (verbose) | |
5505 | fprintf(stderr, Name ": Cannot open %s: %s\n", | |
5506 | dev, strerror(errno)); | |
5507 | return 0; | |
5508 | } | |
5509 | /* Well, it is in use by someone, maybe an 'imsm' container. */ | |
5510 | cfd = open_container(fd); | |
5511 | close(fd); | |
5512 | if (cfd < 0) { | |
5513 | if (verbose) | |
5514 | fprintf(stderr, Name ": Cannot use %s: It is busy\n", | |
5515 | dev); | |
5516 | return 0; | |
5517 | } | |
5518 | sra = sysfs_read(cfd, 0, GET_VERSION); | |
5519 | if (sra && sra->array.major_version == -1 && | |
5520 | strcmp(sra->text_version, "imsm") == 0) | |
5521 | is_member = 1; | |
5522 | sysfs_free(sra); | |
5523 | if (is_member) { | |
5524 | /* This is a member of a imsm container. Load the container | |
5525 | * and try to create a volume | |
5526 | */ | |
5527 | struct intel_super *super; | |
5528 | ||
5529 | if (load_super_imsm_all(st, cfd, (void **) &super, NULL) == 0) { | |
5530 | st->sb = super; | |
5531 | st->container_dev = fd2devnum(cfd); | |
5532 | close(cfd); | |
5533 | return validate_geometry_imsm_volume(st, level, layout, | |
5534 | raiddisks, chunk, | |
5535 | size, dev, | |
5536 | freesize, 1) | |
5537 | ? 1 : -1; | |
5538 | } | |
5539 | } | |
5540 | ||
5541 | if (verbose) | |
5542 | fprintf(stderr, Name ": failed container membership check\n"); | |
5543 | ||
5544 | close(cfd); | |
5545 | return 0; | |
5546 | } | |
5547 | ||
5548 | static void default_geometry_imsm(struct supertype *st, int *level, int *layout, int *chunk) | |
5549 | { | |
5550 | struct intel_super *super = st->sb; | |
5551 | ||
5552 | if (level && *level == UnSet) | |
5553 | *level = LEVEL_CONTAINER; | |
5554 | ||
5555 | if (level && layout && *layout == UnSet) | |
5556 | *layout = imsm_level_to_layout(*level); | |
5557 | ||
5558 | if (chunk && (*chunk == UnSet || *chunk == 0)) | |
5559 | *chunk = imsm_default_chunk(super->orom); | |
5560 | } | |
5561 | ||
5562 | static void handle_missing(struct intel_super *super, struct imsm_dev *dev); | |
5563 | ||
5564 | static int kill_subarray_imsm(struct supertype *st) | |
5565 | { | |
5566 | /* remove the subarray currently referenced by ->current_vol */ | |
5567 | __u8 i; | |
5568 | struct intel_dev **dp; | |
5569 | struct intel_super *super = st->sb; | |
5570 | __u8 current_vol = super->current_vol; | |
5571 | struct imsm_super *mpb = super->anchor; | |
5572 | ||
5573 | if (super->current_vol < 0) | |
5574 | return 2; | |
5575 | super->current_vol = -1; /* invalidate subarray cursor */ | |
5576 | ||
5577 | /* block deletions that would change the uuid of active subarrays | |
5578 | * | |
5579 | * FIXME when immutable ids are available, but note that we'll | |
5580 | * also need to fixup the invalidated/active subarray indexes in | |
5581 | * mdstat | |
5582 | */ | |
5583 | for (i = 0; i < mpb->num_raid_devs; i++) { | |
5584 | char subarray[4]; | |
5585 | ||
5586 | if (i < current_vol) | |
5587 | continue; | |
5588 | sprintf(subarray, "%u", i); | |
5589 | if (is_subarray_active(subarray, st->devname)) { | |
5590 | fprintf(stderr, | |
5591 | Name ": deleting subarray-%d would change the UUID of active subarray-%d, aborting\n", | |
5592 | current_vol, i); | |
5593 | ||
5594 | return 2; | |
5595 | } | |
5596 | } | |
5597 | ||
5598 | if (st->update_tail) { | |
5599 | struct imsm_update_kill_array *u = malloc(sizeof(*u)); | |
5600 | ||
5601 | if (!u) | |
5602 | return 2; | |
5603 | u->type = update_kill_array; | |
5604 | u->dev_idx = current_vol; | |
5605 | append_metadata_update(st, u, sizeof(*u)); | |
5606 | ||
5607 | return 0; | |
5608 | } | |
5609 | ||
5610 | for (dp = &super->devlist; *dp;) | |
5611 | if ((*dp)->index == current_vol) { | |
5612 | *dp = (*dp)->next; | |
5613 | } else { | |
5614 | handle_missing(super, (*dp)->dev); | |
5615 | if ((*dp)->index > current_vol) | |
5616 | (*dp)->index--; | |
5617 | dp = &(*dp)->next; | |
5618 | } | |
5619 | ||
5620 | /* no more raid devices, all active components are now spares, | |
5621 | * but of course failed are still failed | |
5622 | */ | |
5623 | if (--mpb->num_raid_devs == 0) { | |
5624 | struct dl *d; | |
5625 | ||
5626 | for (d = super->disks; d; d = d->next) | |
5627 | if (d->index > -2) | |
5628 | mark_spare(d); | |
5629 | } | |
5630 | ||
5631 | super->updates_pending++; | |
5632 | ||
5633 | return 0; | |
5634 | } | |
5635 | ||
5636 | static int update_subarray_imsm(struct supertype *st, char *subarray, | |
5637 | char *update, struct mddev_ident *ident) | |
5638 | { | |
5639 | /* update the subarray currently referenced by ->current_vol */ | |
5640 | struct intel_super *super = st->sb; | |
5641 | struct imsm_super *mpb = super->anchor; | |
5642 | ||
5643 | if (strcmp(update, "name") == 0) { | |
5644 | char *name = ident->name; | |
5645 | char *ep; | |
5646 | int vol; | |
5647 | ||
5648 | if (is_subarray_active(subarray, st->devname)) { | |
5649 | fprintf(stderr, | |
5650 | Name ": Unable to update name of active subarray\n"); | |
5651 | return 2; | |
5652 | } | |
5653 | ||
5654 | if (!check_name(super, name, 0)) | |
5655 | return 2; | |
5656 | ||
5657 | vol = strtoul(subarray, &ep, 10); | |
5658 | if (*ep != '\0' || vol >= super->anchor->num_raid_devs) | |
5659 | return 2; | |
5660 | ||
5661 | if (st->update_tail) { | |
5662 | struct imsm_update_rename_array *u = malloc(sizeof(*u)); | |
5663 | ||
5664 | if (!u) | |
5665 | return 2; | |
5666 | u->type = update_rename_array; | |
5667 | u->dev_idx = vol; | |
5668 | snprintf((char *) u->name, MAX_RAID_SERIAL_LEN, "%s", name); | |
5669 | append_metadata_update(st, u, sizeof(*u)); | |
5670 | } else { | |
5671 | struct imsm_dev *dev; | |
5672 | int i; | |
5673 | ||
5674 | dev = get_imsm_dev(super, vol); | |
5675 | snprintf((char *) dev->volume, MAX_RAID_SERIAL_LEN, "%s", name); | |
5676 | for (i = 0; i < mpb->num_raid_devs; i++) { | |
5677 | dev = get_imsm_dev(super, i); | |
5678 | handle_missing(super, dev); | |
5679 | } | |
5680 | super->updates_pending++; | |
5681 | } | |
5682 | } else | |
5683 | return 2; | |
5684 | ||
5685 | return 0; | |
5686 | } | |
5687 | #endif /* MDASSEMBLE */ | |
5688 | ||
5689 | static int is_gen_migration(struct imsm_dev *dev) | |
5690 | { | |
5691 | if (dev == NULL) | |
5692 | return 0; | |
5693 | ||
5694 | if (!dev->vol.migr_state) | |
5695 | return 0; | |
5696 | ||
5697 | if (migr_type(dev) == MIGR_GEN_MIGR) | |
5698 | return 1; | |
5699 | ||
5700 | return 0; | |
5701 | } | |
5702 | ||
5703 | static int is_rebuilding(struct imsm_dev *dev) | |
5704 | { | |
5705 | struct imsm_map *migr_map; | |
5706 | ||
5707 | if (!dev->vol.migr_state) | |
5708 | return 0; | |
5709 | ||
5710 | if (migr_type(dev) != MIGR_REBUILD) | |
5711 | return 0; | |
5712 | ||
5713 | migr_map = get_imsm_map(dev, 1); | |
5714 | ||
5715 | if (migr_map->map_state == IMSM_T_STATE_DEGRADED) | |
5716 | return 1; | |
5717 | else | |
5718 | return 0; | |
5719 | } | |
5720 | ||
5721 | static void update_recovery_start(struct intel_super *super, | |
5722 | struct imsm_dev *dev, | |
5723 | struct mdinfo *array) | |
5724 | { | |
5725 | struct mdinfo *rebuild = NULL; | |
5726 | struct mdinfo *d; | |
5727 | __u32 units; | |
5728 | ||
5729 | if (!is_rebuilding(dev)) | |
5730 | return; | |
5731 | ||
5732 | /* Find the rebuild target, but punt on the dual rebuild case */ | |
5733 | for (d = array->devs; d; d = d->next) | |
5734 | if (d->recovery_start == 0) { | |
5735 | if (rebuild) | |
5736 | return; | |
5737 | rebuild = d; | |
5738 | } | |
5739 | ||
5740 | if (!rebuild) { | |
5741 | /* (?) none of the disks are marked with | |
5742 | * IMSM_ORD_REBUILD, so assume they are missing and the | |
5743 | * disk_ord_tbl was not correctly updated | |
5744 | */ | |
5745 | dprintf("%s: failed to locate out-of-sync disk\n", __func__); | |
5746 | return; | |
5747 | } | |
5748 | ||
5749 | units = __le32_to_cpu(dev->vol.curr_migr_unit); | |
5750 | rebuild->recovery_start = units * blocks_per_migr_unit(super, dev); | |
5751 | } | |
5752 | ||
5753 | #ifndef MDASSEMBLE | |
5754 | static int recover_backup_imsm(struct supertype *st, struct mdinfo *info); | |
5755 | #endif | |
5756 | ||
5757 | static struct mdinfo *container_content_imsm(struct supertype *st, char *subarray) | |
5758 | { | |
5759 | /* Given a container loaded by load_super_imsm_all, | |
5760 | * extract information about all the arrays into | |
5761 | * an mdinfo tree. | |
5762 | * If 'subarray' is given, just extract info about that array. | |
5763 | * | |
5764 | * For each imsm_dev create an mdinfo, fill it in, | |
5765 | * then look for matching devices in super->disks | |
5766 | * and create appropriate device mdinfo. | |
5767 | */ | |
5768 | struct intel_super *super = st->sb; | |
5769 | struct imsm_super *mpb = super->anchor; | |
5770 | struct mdinfo *rest = NULL; | |
5771 | unsigned int i; | |
5772 | int sb_errors = 0; | |
5773 | struct dl *d; | |
5774 | int spare_disks = 0; | |
5775 | ||
5776 | /* do not assemble arrays when not all attributes are supported */ | |
5777 | if (imsm_check_attributes(mpb->attributes) == 0) { | |
5778 | sb_errors = 1; | |
5779 | fprintf(stderr, Name ": Unsupported attributes in IMSM metadata." | |
5780 | "Arrays activation is blocked.\n"); | |
5781 | } | |
5782 | ||
5783 | /* check for bad blocks */ | |
5784 | if (imsm_bbm_log_size(super->anchor)) { | |
5785 | fprintf(stderr, Name ": BBM log found in IMSM metadata." | |
5786 | "Arrays activation is blocked.\n"); | |
5787 | sb_errors = 1; | |
5788 | } | |
5789 | ||
5790 | ||
5791 | /* count spare devices, not used in maps | |
5792 | */ | |
5793 | for (d = super->disks; d; d = d->next) | |
5794 | if (d->index == -1) | |
5795 | spare_disks++; | |
5796 | ||
5797 | for (i = 0; i < mpb->num_raid_devs; i++) { | |
5798 | struct imsm_dev *dev; | |
5799 | struct imsm_map *map; | |
5800 | struct imsm_map *map2; | |
5801 | struct mdinfo *this; | |
5802 | int slot, chunk; | |
5803 | char *ep; | |
5804 | ||
5805 | if (subarray && | |
5806 | (i != strtoul(subarray, &ep, 10) || *ep != '\0')) | |
5807 | continue; | |
5808 | ||
5809 | dev = get_imsm_dev(super, i); | |
5810 | map = get_imsm_map(dev, 0); | |
5811 | map2 = get_imsm_map(dev, 1); | |
5812 | ||
5813 | /* do not publish arrays that are in the middle of an | |
5814 | * unsupported migration | |
5815 | */ | |
5816 | if (dev->vol.migr_state && | |
5817 | (migr_type(dev) == MIGR_STATE_CHANGE)) { | |
5818 | fprintf(stderr, Name ": cannot assemble volume '%.16s':" | |
5819 | " unsupported migration in progress\n", | |
5820 | dev->volume); | |
5821 | continue; | |
5822 | } | |
5823 | /* do not publish arrays that are not support by controller's | |
5824 | * OROM/EFI | |
5825 | */ | |
5826 | ||
5827 | chunk = __le16_to_cpu(map->blocks_per_strip) >> 1; | |
5828 | this = malloc(sizeof(*this)); | |
5829 | if (!this) { | |
5830 | fprintf(stderr, Name ": failed to allocate %zu bytes\n", | |
5831 | sizeof(*this)); | |
5832 | break; | |
5833 | } | |
5834 | ||
5835 | super->current_vol = i; | |
5836 | getinfo_super_imsm_volume(st, this, NULL); | |
5837 | this->next = rest; | |
5838 | #ifndef MDASSEMBLE | |
5839 | /* mdadm does not support all metadata features- set the bit in all arrays state */ | |
5840 | if (!validate_geometry_imsm_orom(super, | |
5841 | get_imsm_raid_level(map), /* RAID level */ | |
5842 | imsm_level_to_layout(get_imsm_raid_level(map)), | |
5843 | map->num_members, /* raid disks */ | |
5844 | &chunk, | |
5845 | 1 /* verbose */)) { | |
5846 | fprintf(stderr, Name ": IMSM RAID geometry validation" | |
5847 | " failed. Array %s activation is blocked.\n", | |
5848 | dev->volume); | |
5849 | this->array.state |= | |
5850 | (1<<MD_SB_BLOCK_CONTAINER_RESHAPE) | | |
5851 | (1<<MD_SB_BLOCK_VOLUME); | |
5852 | } | |
5853 | #endif | |
5854 | ||
5855 | /* if array has bad blocks, set suitable bit in all arrays state */ | |
5856 | if (sb_errors) | |
5857 | this->array.state |= | |
5858 | (1<<MD_SB_BLOCK_CONTAINER_RESHAPE) | | |
5859 | (1<<MD_SB_BLOCK_VOLUME); | |
5860 | ||
5861 | for (slot = 0 ; slot < map->num_members; slot++) { | |
5862 | unsigned long long recovery_start; | |
5863 | struct mdinfo *info_d; | |
5864 | struct dl *d; | |
5865 | int idx; | |
5866 | int skip; | |
5867 | __u32 ord; | |
5868 | ||
5869 | skip = 0; | |
5870 | idx = get_imsm_disk_idx(dev, slot, 0); | |
5871 | ord = get_imsm_ord_tbl_ent(dev, slot, -1); | |
5872 | for (d = super->disks; d ; d = d->next) | |
5873 | if (d->index == idx) | |
5874 | break; | |
5875 | ||
5876 | recovery_start = MaxSector; | |
5877 | if (d == NULL) | |
5878 | skip = 1; | |
5879 | if (d && is_failed(&d->disk)) | |
5880 | skip = 1; | |
5881 | if (ord & IMSM_ORD_REBUILD) | |
5882 | recovery_start = 0; | |
5883 | ||
5884 | /* | |
5885 | * if we skip some disks the array will be assmebled degraded; | |
5886 | * reset resync start to avoid a dirty-degraded | |
5887 | * situation when performing the intial sync | |
5888 | * | |
5889 | * FIXME handle dirty degraded | |
5890 | */ | |
5891 | if ((skip || recovery_start == 0) && !dev->vol.dirty) | |
5892 | this->resync_start = MaxSector; | |
5893 | if (skip) | |
5894 | continue; | |
5895 | ||
5896 | info_d = calloc(1, sizeof(*info_d)); | |
5897 | if (!info_d) { | |
5898 | fprintf(stderr, Name ": failed to allocate disk" | |
5899 | " for volume %.16s\n", dev->volume); | |
5900 | info_d = this->devs; | |
5901 | while (info_d) { | |
5902 | struct mdinfo *d = info_d->next; | |
5903 | ||
5904 | free(info_d); | |
5905 | info_d = d; | |
5906 | } | |
5907 | free(this); | |
5908 | this = rest; | |
5909 | break; | |
5910 | } | |
5911 | info_d->next = this->devs; | |
5912 | this->devs = info_d; | |
5913 | ||
5914 | info_d->disk.number = d->index; | |
5915 | info_d->disk.major = d->major; | |
5916 | info_d->disk.minor = d->minor; | |
5917 | info_d->disk.raid_disk = slot; | |
5918 | info_d->recovery_start = recovery_start; | |
5919 | if (map2) { | |
5920 | if (slot < map2->num_members) | |
5921 | info_d->disk.state = (1 << MD_DISK_ACTIVE); | |
5922 | else | |
5923 | this->array.spare_disks++; | |
5924 | } else { | |
5925 | if (slot < map->num_members) | |
5926 | info_d->disk.state = (1 << MD_DISK_ACTIVE); | |
5927 | else | |
5928 | this->array.spare_disks++; | |
5929 | } | |
5930 | if (info_d->recovery_start == MaxSector) | |
5931 | this->array.working_disks++; | |
5932 | ||
5933 | info_d->events = __le32_to_cpu(mpb->generation_num); | |
5934 | info_d->data_offset = __le32_to_cpu(map->pba_of_lba0); | |
5935 | info_d->component_size = __le32_to_cpu(map->blocks_per_member); | |
5936 | } | |
5937 | /* now that the disk list is up-to-date fixup recovery_start */ | |
5938 | update_recovery_start(super, dev, this); | |
5939 | this->array.spare_disks += spare_disks; | |
5940 | ||
5941 | #ifndef MDASSEMBLE | |
5942 | /* check for reshape */ | |
5943 | if (this->reshape_active == 1) | |
5944 | recover_backup_imsm(st, this); | |
5945 | #endif | |
5946 | rest = this; | |
5947 | } | |
5948 | ||
5949 | return rest; | |
5950 | } | |
5951 | ||
5952 | ||
5953 | static __u8 imsm_check_degraded(struct intel_super *super, struct imsm_dev *dev, | |
5954 | int failed, int look_in_map) | |
5955 | { | |
5956 | struct imsm_map *map; | |
5957 | ||
5958 | map = get_imsm_map(dev, look_in_map); | |
5959 | ||
5960 | if (!failed) | |
5961 | return map->map_state == IMSM_T_STATE_UNINITIALIZED ? | |
5962 | IMSM_T_STATE_UNINITIALIZED : IMSM_T_STATE_NORMAL; | |
5963 | ||
5964 | switch (get_imsm_raid_level(map)) { | |
5965 | case 0: | |
5966 | return IMSM_T_STATE_FAILED; | |
5967 | break; | |
5968 | case 1: | |
5969 | if (failed < map->num_members) | |
5970 | return IMSM_T_STATE_DEGRADED; | |
5971 | else | |
5972 | return IMSM_T_STATE_FAILED; | |
5973 | break; | |
5974 | case 10: | |
5975 | { | |
5976 | /** | |
5977 | * check to see if any mirrors have failed, otherwise we | |
5978 | * are degraded. Even numbered slots are mirrored on | |
5979 | * slot+1 | |
5980 | */ | |
5981 | int i; | |
5982 | /* gcc -Os complains that this is unused */ | |
5983 | int insync = insync; | |
5984 | ||
5985 | for (i = 0; i < map->num_members; i++) { | |
5986 | __u32 ord = get_imsm_ord_tbl_ent(dev, i, -1); | |
5987 | int idx = ord_to_idx(ord); | |
5988 | struct imsm_disk *disk; | |
5989 | ||
5990 | /* reset the potential in-sync count on even-numbered | |
5991 | * slots. num_copies is always 2 for imsm raid10 | |
5992 | */ | |
5993 | if ((i & 1) == 0) | |
5994 | insync = 2; | |
5995 | ||
5996 | disk = get_imsm_disk(super, idx); | |
5997 | if (!disk || is_failed(disk) || ord & IMSM_ORD_REBUILD) | |
5998 | insync--; | |
5999 | ||
6000 | /* no in-sync disks left in this mirror the | |
6001 | * array has failed | |
6002 | */ | |
6003 | if (insync == 0) | |
6004 | return IMSM_T_STATE_FAILED; | |
6005 | } | |
6006 | ||
6007 | return IMSM_T_STATE_DEGRADED; | |
6008 | } | |
6009 | case 5: | |
6010 | if (failed < 2) | |
6011 | return IMSM_T_STATE_DEGRADED; | |
6012 | else | |
6013 | return IMSM_T_STATE_FAILED; | |
6014 | break; | |
6015 | default: | |
6016 | break; | |
6017 | } | |
6018 | ||
6019 | return map->map_state; | |
6020 | } | |
6021 | ||
6022 | static int imsm_count_failed(struct intel_super *super, struct imsm_dev *dev, | |
6023 | int look_in_map) | |
6024 | { | |
6025 | int i; | |
6026 | int failed = 0; | |
6027 | struct imsm_disk *disk; | |
6028 | struct imsm_map *map = get_imsm_map(dev, MAP_0); | |
6029 | struct imsm_map *prev = get_imsm_map(dev, MAP_1); | |
6030 | struct imsm_map *map_for_loop; | |
6031 | __u32 ord; | |
6032 | int idx; | |
6033 | int idx_1; | |
6034 | ||
6035 | /* at the beginning of migration we set IMSM_ORD_REBUILD on | |
6036 | * disks that are being rebuilt. New failures are recorded to | |
6037 | * map[0]. So we look through all the disks we started with and | |
6038 | * see if any failures are still present, or if any new ones | |
6039 | * have arrived | |
6040 | */ | |
6041 | map_for_loop = map; | |
6042 | if (prev && (map->num_members < prev->num_members)) | |
6043 | map_for_loop = prev; | |
6044 | ||
6045 | for (i = 0; i < map_for_loop->num_members; i++) { | |
6046 | idx_1 = -255; | |
6047 | if (prev && | |
6048 | (look_in_map & MAP_1) && (i < prev->num_members)) { | |
6049 | ord = __le32_to_cpu(prev->disk_ord_tbl[i]); | |
6050 | idx_1 = ord_to_idx(ord); | |
6051 | ||
6052 | disk = get_imsm_disk(super, idx_1); | |
6053 | if (!disk || is_failed(disk) || ord & IMSM_ORD_REBUILD) | |
6054 | failed++; | |
6055 | } | |
6056 | if ((look_in_map & MAP_0) && (i < map->num_members)) { | |
6057 | ord = __le32_to_cpu(map->disk_ord_tbl[i]); | |
6058 | idx = ord_to_idx(ord); | |
6059 | ||
6060 | if (idx != idx_1) { | |
6061 | disk = get_imsm_disk(super, idx); | |
6062 | if (!disk || is_failed(disk) || | |
6063 | ord & IMSM_ORD_REBUILD) | |
6064 | failed++; | |
6065 | } | |
6066 | } | |
6067 | } | |
6068 | ||
6069 | return failed; | |
6070 | } | |
6071 | ||
6072 | #ifndef MDASSEMBLE | |
6073 | static int imsm_open_new(struct supertype *c, struct active_array *a, | |
6074 | char *inst) | |
6075 | { | |
6076 | struct intel_super *super = c->sb; | |
6077 | struct imsm_super *mpb = super->anchor; | |
6078 | ||
6079 | if (atoi(inst) >= mpb->num_raid_devs) { | |
6080 | fprintf(stderr, "%s: subarry index %d, out of range\n", | |
6081 | __func__, atoi(inst)); | |
6082 | return -ENODEV; | |
6083 | } | |
6084 | ||
6085 | dprintf("imsm: open_new %s\n", inst); | |
6086 | a->info.container_member = atoi(inst); | |
6087 | return 0; | |
6088 | } | |
6089 | ||
6090 | static int is_resyncing(struct imsm_dev *dev) | |
6091 | { | |
6092 | struct imsm_map *migr_map; | |
6093 | ||
6094 | if (!dev->vol.migr_state) | |
6095 | return 0; | |
6096 | ||
6097 | if (migr_type(dev) == MIGR_INIT || | |
6098 | migr_type(dev) == MIGR_REPAIR) | |
6099 | return 1; | |
6100 | ||
6101 | if (migr_type(dev) == MIGR_GEN_MIGR) | |
6102 | return 0; | |
6103 | ||
6104 | migr_map = get_imsm_map(dev, 1); | |
6105 | ||
6106 | if ((migr_map->map_state == IMSM_T_STATE_NORMAL) && | |
6107 | (dev->vol.migr_type != MIGR_GEN_MIGR)) | |
6108 | return 1; | |
6109 | else | |
6110 | return 0; | |
6111 | } | |
6112 | ||
6113 | /* return true if we recorded new information */ | |
6114 | static int mark_failure(struct imsm_dev *dev, struct imsm_disk *disk, int idx) | |
6115 | { | |
6116 | __u32 ord; | |
6117 | int slot; | |
6118 | struct imsm_map *map; | |
6119 | char buf[MAX_RAID_SERIAL_LEN+3]; | |
6120 | unsigned int len, shift = 0; | |
6121 | ||
6122 | /* new failures are always set in map[0] */ | |
6123 | map = get_imsm_map(dev, 0); | |
6124 | ||
6125 | slot = get_imsm_disk_slot(map, idx); | |
6126 | if (slot < 0) | |
6127 | return 0; | |
6128 | ||
6129 | ord = __le32_to_cpu(map->disk_ord_tbl[slot]); | |
6130 | if (is_failed(disk) && (ord & IMSM_ORD_REBUILD)) | |
6131 | return 0; | |
6132 | ||
6133 | memcpy(buf, disk->serial, MAX_RAID_SERIAL_LEN); | |
6134 | buf[MAX_RAID_SERIAL_LEN] = '\000'; | |
6135 | strcat(buf, ":0"); | |
6136 | if ((len = strlen(buf)) >= MAX_RAID_SERIAL_LEN) | |
6137 | shift = len - MAX_RAID_SERIAL_LEN + 1; | |
6138 | strncpy((char *)disk->serial, &buf[shift], MAX_RAID_SERIAL_LEN); | |
6139 | ||
6140 | disk->status |= FAILED_DISK; | |
6141 | set_imsm_ord_tbl_ent(map, slot, idx | IMSM_ORD_REBUILD); | |
6142 | if (is_gen_migration(dev)) { | |
6143 | struct imsm_map *map2 = get_imsm_map(dev, 1); | |
6144 | if (slot < map2->num_members) | |
6145 | set_imsm_ord_tbl_ent(map2, slot, | |
6146 | idx | IMSM_ORD_REBUILD); | |
6147 | } | |
6148 | if (map->failed_disk_num == 0xff) | |
6149 | map->failed_disk_num = slot; | |
6150 | return 1; | |
6151 | } | |
6152 | ||
6153 | static void mark_missing(struct imsm_dev *dev, struct imsm_disk *disk, int idx) | |
6154 | { | |
6155 | mark_failure(dev, disk, idx); | |
6156 | ||
6157 | if (disk->scsi_id == __cpu_to_le32(~(__u32)0)) | |
6158 | return; | |
6159 | ||
6160 | disk->scsi_id = __cpu_to_le32(~(__u32)0); | |
6161 | memmove(&disk->serial[0], &disk->serial[1], MAX_RAID_SERIAL_LEN - 1); | |
6162 | } | |
6163 | ||
6164 | static void handle_missing(struct intel_super *super, struct imsm_dev *dev) | |
6165 | { | |
6166 | struct dl *dl; | |
6167 | ||
6168 | if (!super->missing) | |
6169 | return; | |
6170 | ||
6171 | dprintf("imsm: mark missing\n"); | |
6172 | for (dl = super->missing; dl; dl = dl->next) | |
6173 | mark_missing(dev, &dl->disk, dl->index); | |
6174 | super->updates_pending++; | |
6175 | } | |
6176 | ||
6177 | static unsigned long long imsm_set_array_size(struct imsm_dev *dev) | |
6178 | { | |
6179 | int used_disks = imsm_num_data_members(dev, 0); | |
6180 | unsigned long long array_blocks; | |
6181 | struct imsm_map *map; | |
6182 | ||
6183 | if (used_disks == 0) { | |
6184 | /* when problems occures | |
6185 | * return current array_blocks value | |
6186 | */ | |
6187 | array_blocks = __le32_to_cpu(dev->size_high); | |
6188 | array_blocks = array_blocks << 32; | |
6189 | array_blocks += __le32_to_cpu(dev->size_low); | |
6190 | ||
6191 | return array_blocks; | |
6192 | } | |
6193 | ||
6194 | /* set array size in metadata | |
6195 | */ | |
6196 | map = get_imsm_map(dev, 0); | |
6197 | array_blocks = map->blocks_per_member * used_disks; | |
6198 | ||
6199 | /* round array size down to closest MB | |
6200 | */ | |
6201 | array_blocks = (array_blocks >> SECT_PER_MB_SHIFT) << SECT_PER_MB_SHIFT; | |
6202 | dev->size_low = __cpu_to_le32((__u32)array_blocks); | |
6203 | dev->size_high = __cpu_to_le32((__u32)(array_blocks >> 32)); | |
6204 | ||
6205 | return array_blocks; | |
6206 | } | |
6207 | ||
6208 | static void imsm_set_disk(struct active_array *a, int n, int state); | |
6209 | ||
6210 | static void imsm_progress_container_reshape(struct intel_super *super) | |
6211 | { | |
6212 | /* if no device has a migr_state, but some device has a | |
6213 | * different number of members than the previous device, start | |
6214 | * changing the number of devices in this device to match | |
6215 | * previous. | |
6216 | */ | |
6217 | struct imsm_super *mpb = super->anchor; | |
6218 | int prev_disks = -1; | |
6219 | int i; | |
6220 | int copy_map_size; | |
6221 | ||
6222 | for (i = 0; i < mpb->num_raid_devs; i++) { | |
6223 | struct imsm_dev *dev = get_imsm_dev(super, i); | |
6224 | struct imsm_map *map = get_imsm_map(dev, 0); | |
6225 | struct imsm_map *map2; | |
6226 | int prev_num_members; | |
6227 | ||
6228 | if (dev->vol.migr_state) | |
6229 | return; | |
6230 | ||
6231 | if (prev_disks == -1) | |
6232 | prev_disks = map->num_members; | |
6233 | if (prev_disks == map->num_members) | |
6234 | continue; | |
6235 | ||
6236 | /* OK, this array needs to enter reshape mode. | |
6237 | * i.e it needs a migr_state | |
6238 | */ | |
6239 | ||
6240 | copy_map_size = sizeof_imsm_map(map); | |
6241 | prev_num_members = map->num_members; | |
6242 | map->num_members = prev_disks; | |
6243 | dev->vol.migr_state = 1; | |
6244 | dev->vol.curr_migr_unit = 0; | |
6245 | set_migr_type(dev, MIGR_GEN_MIGR); | |
6246 | for (i = prev_num_members; | |
6247 | i < map->num_members; i++) | |
6248 | set_imsm_ord_tbl_ent(map, i, i); | |
6249 | map2 = get_imsm_map(dev, 1); | |
6250 | /* Copy the current map */ | |
6251 | memcpy(map2, map, copy_map_size); | |
6252 | map2->num_members = prev_num_members; | |
6253 | ||
6254 | imsm_set_array_size(dev); | |
6255 | super->updates_pending++; | |
6256 | } | |
6257 | } | |
6258 | ||
6259 | /* Handle dirty -> clean transititions, resync and reshape. Degraded and rebuild | |
6260 | * states are handled in imsm_set_disk() with one exception, when a | |
6261 | * resync is stopped due to a new failure this routine will set the | |
6262 | * 'degraded' state for the array. | |
6263 | */ | |
6264 | static int imsm_set_array_state(struct active_array *a, int consistent) | |
6265 | { | |
6266 | int inst = a->info.container_member; | |
6267 | struct intel_super *super = a->container->sb; | |
6268 | struct imsm_dev *dev = get_imsm_dev(super, inst); | |
6269 | struct imsm_map *map = get_imsm_map(dev, 0); | |
6270 | int failed = imsm_count_failed(super, dev, MAP_0); | |
6271 | __u8 map_state = imsm_check_degraded(super, dev, failed, MAP_0); | |
6272 | __u32 blocks_per_unit; | |
6273 | ||
6274 | if (dev->vol.migr_state && | |
6275 | dev->vol.migr_type == MIGR_GEN_MIGR) { | |
6276 | /* array state change is blocked due to reshape action | |
6277 | * We might need to | |
6278 | * - abort the reshape (if last_checkpoint is 0 and action!= reshape) | |
6279 | * - finish the reshape (if last_checkpoint is big and action != reshape) | |
6280 | * - update curr_migr_unit | |
6281 | */ | |
6282 | if (a->curr_action == reshape) { | |
6283 | /* still reshaping, maybe update curr_migr_unit */ | |
6284 | goto mark_checkpoint; | |
6285 | } else { | |
6286 | if (a->last_checkpoint == 0 && a->prev_action == reshape) { | |
6287 | /* for some reason we aborted the reshape. | |
6288 | * | |
6289 | * disable automatic metadata rollback | |
6290 | * user action is required to recover process | |
6291 | */ | |
6292 | if (0) { | |
6293 | struct imsm_map *map2 = get_imsm_map(dev, 1); | |
6294 | dev->vol.migr_state = 0; | |
6295 | set_migr_type(dev, 0); | |
6296 | dev->vol.curr_migr_unit = 0; | |
6297 | memcpy(map, map2, sizeof_imsm_map(map2)); | |
6298 | super->updates_pending++; | |
6299 | } | |
6300 | } | |
6301 | if (a->last_checkpoint >= a->info.component_size) { | |
6302 | unsigned long long array_blocks; | |
6303 | int used_disks; | |
6304 | struct mdinfo *mdi; | |
6305 | ||
6306 | used_disks = imsm_num_data_members(dev, 0); | |
6307 | if (used_disks > 0) { | |
6308 | array_blocks = | |
6309 | map->blocks_per_member * | |
6310 | used_disks; | |
6311 | /* round array size down to closest MB | |
6312 | */ | |
6313 | array_blocks = (array_blocks | |
6314 | >> SECT_PER_MB_SHIFT) | |
6315 | << SECT_PER_MB_SHIFT; | |
6316 | a->info.custom_array_size = array_blocks; | |
6317 | /* encourage manager to update array | |
6318 | * size | |
6319 | */ | |
6320 | ||
6321 | a->check_reshape = 1; | |
6322 | } | |
6323 | /* finalize online capacity expansion/reshape */ | |
6324 | for (mdi = a->info.devs; mdi; mdi = mdi->next) | |
6325 | imsm_set_disk(a, | |
6326 | mdi->disk.raid_disk, | |
6327 | mdi->curr_state); | |
6328 | ||
6329 | imsm_progress_container_reshape(super); | |
6330 | } | |
6331 | } | |
6332 | } | |
6333 | ||
6334 | /* before we activate this array handle any missing disks */ | |
6335 | if (consistent == 2) | |
6336 | handle_missing(super, dev); | |
6337 | ||
6338 | if (consistent == 2 && | |
6339 | (!is_resync_complete(&a->info) || | |
6340 | map_state != IMSM_T_STATE_NORMAL || | |
6341 | dev->vol.migr_state)) | |
6342 | consistent = 0; | |
6343 | ||
6344 | if (is_resync_complete(&a->info)) { | |
6345 | /* complete intialization / resync, | |
6346 | * recovery and interrupted recovery is completed in | |
6347 | * ->set_disk | |
6348 | */ | |
6349 | if (is_resyncing(dev)) { | |
6350 | dprintf("imsm: mark resync done\n"); | |
6351 | end_migration(dev, super, map_state); | |
6352 | super->updates_pending++; | |
6353 | a->last_checkpoint = 0; | |
6354 | } | |
6355 | } else if ((!is_resyncing(dev) && !failed) && | |
6356 | (imsm_reshape_blocks_arrays_changes(super) == 0)) { | |
6357 | /* mark the start of the init process if nothing is failed */ | |
6358 | dprintf("imsm: mark resync start\n"); | |
6359 | if (map->map_state == IMSM_T_STATE_UNINITIALIZED) | |
6360 | migrate(dev, super, IMSM_T_STATE_NORMAL, MIGR_INIT); | |
6361 | else | |
6362 | migrate(dev, super, IMSM_T_STATE_NORMAL, MIGR_REPAIR); | |
6363 | super->updates_pending++; | |
6364 | } | |
6365 | ||
6366 | mark_checkpoint: | |
6367 | /* skip checkpointing for general migration, | |
6368 | * it is controlled in mdadm | |
6369 | */ | |
6370 | if (is_gen_migration(dev)) | |
6371 | goto skip_mark_checkpoint; | |
6372 | ||
6373 | /* check if we can update curr_migr_unit from resync_start, recovery_start */ | |
6374 | blocks_per_unit = blocks_per_migr_unit(super, dev); | |
6375 | if (blocks_per_unit) { | |
6376 | __u32 units32; | |
6377 | __u64 units; | |
6378 | ||
6379 | units = a->last_checkpoint / blocks_per_unit; | |
6380 | units32 = units; | |
6381 | ||
6382 | /* check that we did not overflow 32-bits, and that | |
6383 | * curr_migr_unit needs updating | |
6384 | */ | |
6385 | if (units32 == units && | |
6386 | units32 != 0 && | |
6387 | __le32_to_cpu(dev->vol.curr_migr_unit) != units32) { | |
6388 | dprintf("imsm: mark checkpoint (%u)\n", units32); | |
6389 | dev->vol.curr_migr_unit = __cpu_to_le32(units32); | |
6390 | super->updates_pending++; | |
6391 | } | |
6392 | } | |
6393 | ||
6394 | skip_mark_checkpoint: | |
6395 | /* mark dirty / clean */ | |
6396 | if (dev->vol.dirty != !consistent) { | |
6397 | dprintf("imsm: mark '%s'\n", consistent ? "clean" : "dirty"); | |
6398 | if (consistent) | |
6399 | dev->vol.dirty = 0; | |
6400 | else | |
6401 | dev->vol.dirty = 1; | |
6402 | super->updates_pending++; | |
6403 | } | |
6404 | ||
6405 | return consistent; | |
6406 | } | |
6407 | ||
6408 | static void imsm_set_disk(struct active_array *a, int n, int state) | |
6409 | { | |
6410 | int inst = a->info.container_member; | |
6411 | struct intel_super *super = a->container->sb; | |
6412 | struct imsm_dev *dev = get_imsm_dev(super, inst); | |
6413 | struct imsm_map *map = get_imsm_map(dev, 0); | |
6414 | struct imsm_disk *disk; | |
6415 | int failed; | |
6416 | __u32 ord; | |
6417 | __u8 map_state; | |
6418 | ||
6419 | if (n > map->num_members) | |
6420 | fprintf(stderr, "imsm: set_disk %d out of range 0..%d\n", | |
6421 | n, map->num_members - 1); | |
6422 | ||
6423 | if (n < 0) | |
6424 | return; | |
6425 | ||
6426 | dprintf("imsm: set_disk %d:%x\n", n, state); | |
6427 | ||
6428 | ord = get_imsm_ord_tbl_ent(dev, n, 0); | |
6429 | disk = get_imsm_disk(super, ord_to_idx(ord)); | |
6430 | ||
6431 | /* check for new failures */ | |
6432 | if (state & DS_FAULTY) { | |
6433 | if (mark_failure(dev, disk, ord_to_idx(ord))) | |
6434 | super->updates_pending++; | |
6435 | } | |
6436 | ||
6437 | /* check if in_sync */ | |
6438 | if (state & DS_INSYNC && ord & IMSM_ORD_REBUILD && is_rebuilding(dev)) { | |
6439 | struct imsm_map *migr_map = get_imsm_map(dev, 1); | |
6440 | ||
6441 | set_imsm_ord_tbl_ent(migr_map, n, ord_to_idx(ord)); | |
6442 | super->updates_pending++; | |
6443 | } | |
6444 | ||
6445 | failed = imsm_count_failed(super, dev, MAP_0); | |
6446 | map_state = imsm_check_degraded(super, dev, failed, MAP_0); | |
6447 | ||
6448 | /* check if recovery complete, newly degraded, or failed */ | |
6449 | if (map_state == IMSM_T_STATE_NORMAL && is_rebuilding(dev)) { | |
6450 | end_migration(dev, super, map_state); | |
6451 | map = get_imsm_map(dev, 0); | |
6452 | map->failed_disk_num = ~0; | |
6453 | super->updates_pending++; | |
6454 | a->last_checkpoint = 0; | |
6455 | } else if (map_state == IMSM_T_STATE_DEGRADED && | |
6456 | map->map_state != map_state && | |
6457 | !dev->vol.migr_state) { | |
6458 | dprintf("imsm: mark degraded\n"); | |
6459 | map->map_state = map_state; | |
6460 | super->updates_pending++; | |
6461 | a->last_checkpoint = 0; | |
6462 | } else if (map_state == IMSM_T_STATE_FAILED && | |
6463 | map->map_state != map_state) { | |
6464 | dprintf("imsm: mark failed\n"); | |
6465 | end_migration(dev, super, map_state); | |
6466 | super->updates_pending++; | |
6467 | a->last_checkpoint = 0; | |
6468 | } else if (is_gen_migration(dev)) { | |
6469 | dprintf("imsm: Detected General Migration in state: "); | |
6470 | ||
6471 | switch (map_state) { | |
6472 | case IMSM_T_STATE_NORMAL: | |
6473 | dprintf("normal\n"); | |
6474 | if (a->last_checkpoint >= a->info.component_size) | |
6475 | end_migration(dev, super, map_state); | |
6476 | map = get_imsm_map(dev, 0); | |
6477 | map->failed_disk_num = ~0; | |
6478 | break; | |
6479 | case IMSM_T_STATE_DEGRADED: | |
6480 | dprintf("degraded\n"); | |
6481 | if (a->last_checkpoint >= a->info.component_size) | |
6482 | end_migration(dev, super, map_state); | |
6483 | else | |
6484 | manage_second_map(super, dev); | |
6485 | break; | |
6486 | default: | |
6487 | dprintf("failed\n"); | |
6488 | } | |
6489 | map->map_state = map_state; | |
6490 | super->updates_pending++; | |
6491 | } | |
6492 | } | |
6493 | ||
6494 | static int store_imsm_mpb(int fd, struct imsm_super *mpb) | |
6495 | { | |
6496 | void *buf = mpb; | |
6497 | __u32 mpb_size = __le32_to_cpu(mpb->mpb_size); | |
6498 | unsigned long long dsize; | |
6499 | unsigned long long sectors; | |
6500 | ||
6501 | get_dev_size(fd, NULL, &dsize); | |
6502 | ||
6503 | if (mpb_size > 512) { | |
6504 | /* -1 to account for anchor */ | |
6505 | sectors = mpb_sectors(mpb) - 1; | |
6506 | ||
6507 | /* write the extended mpb to the sectors preceeding the anchor */ | |
6508 | if (lseek64(fd, dsize - (512 * (2 + sectors)), SEEK_SET) < 0) | |
6509 | return 1; | |
6510 | ||
6511 | if ((unsigned long long)write(fd, buf + 512, 512 * sectors) | |
6512 | != 512 * sectors) | |
6513 | return 1; | |
6514 | } | |
6515 | ||
6516 | /* first block is stored on second to last sector of the disk */ | |
6517 | if (lseek64(fd, dsize - (512 * 2), SEEK_SET) < 0) | |
6518 | return 1; | |
6519 | ||
6520 | if (write(fd, buf, 512) != 512) | |
6521 | return 1; | |
6522 | ||
6523 | return 0; | |
6524 | } | |
6525 | ||
6526 | static void imsm_sync_metadata(struct supertype *container) | |
6527 | { | |
6528 | struct intel_super *super = container->sb; | |
6529 | ||
6530 | dprintf("sync metadata: %d\n", super->updates_pending); | |
6531 | if (!super->updates_pending) | |
6532 | return; | |
6533 | ||
6534 | write_super_imsm(container, 0); | |
6535 | ||
6536 | super->updates_pending = 0; | |
6537 | } | |
6538 | ||
6539 | static struct dl *imsm_readd(struct intel_super *super, int idx, struct active_array *a) | |
6540 | { | |
6541 | struct imsm_dev *dev = get_imsm_dev(super, a->info.container_member); | |
6542 | int i = get_imsm_disk_idx(dev, idx, -1); | |
6543 | struct dl *dl; | |
6544 | ||
6545 | for (dl = super->disks; dl; dl = dl->next) | |
6546 | if (dl->index == i) | |
6547 | break; | |
6548 | ||
6549 | if (dl && is_failed(&dl->disk)) | |
6550 | dl = NULL; | |
6551 | ||
6552 | if (dl) | |
6553 | dprintf("%s: found %x:%x\n", __func__, dl->major, dl->minor); | |
6554 | ||
6555 | return dl; | |
6556 | } | |
6557 | ||
6558 | static struct dl *imsm_add_spare(struct intel_super *super, int slot, | |
6559 | struct active_array *a, int activate_new, | |
6560 | struct mdinfo *additional_test_list) | |
6561 | { | |
6562 | struct imsm_dev *dev = get_imsm_dev(super, a->info.container_member); | |
6563 | int idx = get_imsm_disk_idx(dev, slot, -1); | |
6564 | struct imsm_super *mpb = super->anchor; | |
6565 | struct imsm_map *map; | |
6566 | unsigned long long pos; | |
6567 | struct mdinfo *d; | |
6568 | struct extent *ex; | |
6569 | int i, j; | |
6570 | int found; | |
6571 | __u32 array_start = 0; | |
6572 | __u32 array_end = 0; | |
6573 | struct dl *dl; | |
6574 | struct mdinfo *test_list; | |
6575 | ||
6576 | for (dl = super->disks; dl; dl = dl->next) { | |
6577 | /* If in this array, skip */ | |
6578 | for (d = a->info.devs ; d ; d = d->next) | |
6579 | if (d->state_fd >= 0 && | |
6580 | d->disk.major == dl->major && | |
6581 | d->disk.minor == dl->minor) { | |
6582 | dprintf("%x:%x already in array\n", | |
6583 | dl->major, dl->minor); | |
6584 | break; | |
6585 | } | |
6586 | if (d) | |
6587 | continue; | |
6588 | test_list = additional_test_list; | |
6589 | while (test_list) { | |
6590 | if (test_list->disk.major == dl->major && | |
6591 | test_list->disk.minor == dl->minor) { | |
6592 | dprintf("%x:%x already in additional test list\n", | |
6593 | dl->major, dl->minor); | |
6594 | break; | |
6595 | } | |
6596 | test_list = test_list->next; | |
6597 | } | |
6598 | if (test_list) | |
6599 | continue; | |
6600 | ||
6601 | /* skip in use or failed drives */ | |
6602 | if (is_failed(&dl->disk) || idx == dl->index || | |
6603 | dl->index == -2) { | |
6604 | dprintf("%x:%x status (failed: %d index: %d)\n", | |
6605 | dl->major, dl->minor, is_failed(&dl->disk), idx); | |
6606 | continue; | |
6607 | } | |
6608 | ||
6609 | /* skip pure spares when we are looking for partially | |
6610 | * assimilated drives | |
6611 | */ | |
6612 | if (dl->index == -1 && !activate_new) | |
6613 | continue; | |
6614 | ||
6615 | /* Does this unused device have the requisite free space? | |
6616 | * It needs to be able to cover all member volumes | |
6617 | */ | |
6618 | ex = get_extents(super, dl); | |
6619 | if (!ex) { | |
6620 | dprintf("cannot get extents\n"); | |
6621 | continue; | |
6622 | } | |
6623 | for (i = 0; i < mpb->num_raid_devs; i++) { | |
6624 | dev = get_imsm_dev(super, i); | |
6625 | map = get_imsm_map(dev, 0); | |
6626 | ||
6627 | /* check if this disk is already a member of | |
6628 | * this array | |
6629 | */ | |
6630 | if (get_imsm_disk_slot(map, dl->index) >= 0) | |
6631 | continue; | |
6632 | ||
6633 | found = 0; | |
6634 | j = 0; | |
6635 | pos = 0; | |
6636 | array_start = __le32_to_cpu(map->pba_of_lba0); | |
6637 | array_end = array_start + | |
6638 | __le32_to_cpu(map->blocks_per_member) - 1; | |
6639 | ||
6640 | do { | |
6641 | /* check that we can start at pba_of_lba0 with | |
6642 | * blocks_per_member of space | |
6643 | */ | |
6644 | if (array_start >= pos && array_end < ex[j].start) { | |
6645 | found = 1; | |
6646 | break; | |
6647 | } | |
6648 | pos = ex[j].start + ex[j].size; | |
6649 | j++; | |
6650 | } while (ex[j-1].size); | |
6651 | ||
6652 | if (!found) | |
6653 | break; | |
6654 | } | |
6655 | ||
6656 | free(ex); | |
6657 | if (i < mpb->num_raid_devs) { | |
6658 | dprintf("%x:%x does not have %u to %u available\n", | |
6659 | dl->major, dl->minor, array_start, array_end); | |
6660 | /* No room */ | |
6661 | continue; | |
6662 | } | |
6663 | return dl; | |
6664 | } | |
6665 | ||
6666 | return dl; | |
6667 | } | |
6668 | ||
6669 | ||
6670 | static int imsm_rebuild_allowed(struct supertype *cont, int dev_idx, int failed) | |
6671 | { | |
6672 | struct imsm_dev *dev2; | |
6673 | struct imsm_map *map; | |
6674 | struct dl *idisk; | |
6675 | int slot; | |
6676 | int idx; | |
6677 | __u8 state; | |
6678 | ||
6679 | dev2 = get_imsm_dev(cont->sb, dev_idx); | |
6680 | if (dev2) { | |
6681 | state = imsm_check_degraded(cont->sb, dev2, failed, | |
6682 | MAP_0); | |
6683 | if (state == IMSM_T_STATE_FAILED) { | |
6684 | map = get_imsm_map(dev2, 0); | |
6685 | if (!map) | |
6686 | return 1; | |
6687 | for (slot = 0; slot < map->num_members; slot++) { | |
6688 | /* | |
6689 | * Check if failed disks are deleted from intel | |
6690 | * disk list or are marked to be deleted | |
6691 | */ | |
6692 | idx = get_imsm_disk_idx(dev2, slot, -1); | |
6693 | idisk = get_imsm_dl_disk(cont->sb, idx); | |
6694 | /* | |
6695 | * Do not rebuild the array if failed disks | |
6696 | * from failed sub-array are not removed from | |
6697 | * container. | |
6698 | */ | |
6699 | if (idisk && | |
6700 | is_failed(&idisk->disk) && | |
6701 | (idisk->action != DISK_REMOVE)) | |
6702 | return 0; | |
6703 | } | |
6704 | } | |
6705 | } | |
6706 | return 1; | |
6707 | } | |
6708 | ||
6709 | static struct mdinfo *imsm_activate_spare(struct active_array *a, | |
6710 | struct metadata_update **updates) | |
6711 | { | |
6712 | /** | |
6713 | * Find a device with unused free space and use it to replace a | |
6714 | * failed/vacant region in an array. We replace failed regions one a | |
6715 | * array at a time. The result is that a new spare disk will be added | |
6716 | * to the first failed array and after the monitor has finished | |
6717 | * propagating failures the remainder will be consumed. | |
6718 | * | |
6719 | * FIXME add a capability for mdmon to request spares from another | |
6720 | * container. | |
6721 | */ | |
6722 | ||
6723 | struct intel_super *super = a->container->sb; | |
6724 | int inst = a->info.container_member; | |
6725 | struct imsm_dev *dev = get_imsm_dev(super, inst); | |
6726 | struct imsm_map *map = get_imsm_map(dev, 0); | |
6727 | int failed = a->info.array.raid_disks; | |
6728 | struct mdinfo *rv = NULL; | |
6729 | struct mdinfo *d; | |
6730 | struct mdinfo *di; | |
6731 | struct metadata_update *mu; | |
6732 | struct dl *dl; | |
6733 | struct imsm_update_activate_spare *u; | |
6734 | int num_spares = 0; | |
6735 | int i; | |
6736 | int allowed; | |
6737 | ||
6738 | for (d = a->info.devs ; d ; d = d->next) { | |
6739 | if ((d->curr_state & DS_FAULTY) && | |
6740 | d->state_fd >= 0) | |
6741 | /* wait for Removal to happen */ | |
6742 | return NULL; | |
6743 | if (d->state_fd >= 0) | |
6744 | failed--; | |
6745 | } | |
6746 | ||
6747 | dprintf("imsm: activate spare: inst=%d failed=%d (%d) level=%d\n", | |
6748 | inst, failed, a->info.array.raid_disks, a->info.array.level); | |
6749 | ||
6750 | if (imsm_reshape_blocks_arrays_changes(super)) | |
6751 | return NULL; | |
6752 | ||
6753 | if (a->info.array.level == 4) | |
6754 | /* No repair for takeovered array | |
6755 | * imsm doesn't support raid4 | |
6756 | */ | |
6757 | return NULL; | |
6758 | ||
6759 | if (imsm_check_degraded(super, dev, failed, MAP_0) != | |
6760 | IMSM_T_STATE_DEGRADED) | |
6761 | return NULL; | |
6762 | ||
6763 | /* | |
6764 | * If there are any failed disks check state of the other volume. | |
6765 | * Block rebuild if the another one is failed until failed disks | |
6766 | * are removed from container. | |
6767 | */ | |
6768 | if (failed) { | |
6769 | dprintf("found failed disks in %.*s, check if there another" | |
6770 | "failed sub-array.\n", | |
6771 | MAX_RAID_SERIAL_LEN, dev->volume); | |
6772 | /* check if states of the other volumes allow for rebuild */ | |
6773 | for (i = 0; i < super->anchor->num_raid_devs; i++) { | |
6774 | if (i != inst) { | |
6775 | allowed = imsm_rebuild_allowed(a->container, | |
6776 | i, failed); | |
6777 | if (!allowed) | |
6778 | return NULL; | |
6779 | } | |
6780 | } | |
6781 | } | |
6782 | ||
6783 | /* For each slot, if it is not working, find a spare */ | |
6784 | for (i = 0; i < a->info.array.raid_disks; i++) { | |
6785 | for (d = a->info.devs ; d ; d = d->next) | |
6786 | if (d->disk.raid_disk == i) | |
6787 | break; | |
6788 | dprintf("found %d: %p %x\n", i, d, d?d->curr_state:0); | |
6789 | if (d && (d->state_fd >= 0)) | |
6790 | continue; | |
6791 | ||
6792 | /* | |
6793 | * OK, this device needs recovery. Try to re-add the | |
6794 | * previous occupant of this slot, if this fails see if | |
6795 | * we can continue the assimilation of a spare that was | |
6796 | * partially assimilated, finally try to activate a new | |
6797 | * spare. | |
6798 | */ | |
6799 | dl = imsm_readd(super, i, a); | |
6800 | if (!dl) | |
6801 | dl = imsm_add_spare(super, i, a, 0, rv); | |
6802 | if (!dl) | |
6803 | dl = imsm_add_spare(super, i, a, 1, rv); | |
6804 | if (!dl) | |
6805 | continue; | |
6806 | ||
6807 | /* found a usable disk with enough space */ | |
6808 | di = malloc(sizeof(*di)); | |
6809 | if (!di) | |
6810 | continue; | |
6811 | memset(di, 0, sizeof(*di)); | |
6812 | ||
6813 | /* dl->index will be -1 in the case we are activating a | |
6814 | * pristine spare. imsm_process_update() will create a | |
6815 | * new index in this case. Once a disk is found to be | |
6816 | * failed in all member arrays it is kicked from the | |
6817 | * metadata | |
6818 | */ | |
6819 | di->disk.number = dl->index; | |
6820 | ||
6821 | /* (ab)use di->devs to store a pointer to the device | |
6822 | * we chose | |
6823 | */ | |
6824 | di->devs = (struct mdinfo *) dl; | |
6825 | ||
6826 | di->disk.raid_disk = i; | |
6827 | di->disk.major = dl->major; | |
6828 | di->disk.minor = dl->minor; | |
6829 | di->disk.state = 0; | |
6830 | di->recovery_start = 0; | |
6831 | di->data_offset = __le32_to_cpu(map->pba_of_lba0); | |
6832 | di->component_size = a->info.component_size; | |
6833 | di->container_member = inst; | |
6834 | super->random = random32(); | |
6835 | di->next = rv; | |
6836 | rv = di; | |
6837 | num_spares++; | |
6838 | dprintf("%x:%x to be %d at %llu\n", dl->major, dl->minor, | |
6839 | i, di->data_offset); | |
6840 | } | |
6841 | ||
6842 | if (!rv) | |
6843 | /* No spares found */ | |
6844 | return rv; | |
6845 | /* Now 'rv' has a list of devices to return. | |
6846 | * Create a metadata_update record to update the | |
6847 | * disk_ord_tbl for the array | |
6848 | */ | |
6849 | mu = malloc(sizeof(*mu)); | |
6850 | if (mu) { | |
6851 | mu->buf = malloc(sizeof(struct imsm_update_activate_spare) * num_spares); | |
6852 | if (mu->buf == NULL) { | |
6853 | free(mu); | |
6854 | mu = NULL; | |
6855 | } | |
6856 | } | |
6857 | if (!mu) { | |
6858 | while (rv) { | |
6859 | struct mdinfo *n = rv->next; | |
6860 | ||
6861 | free(rv); | |
6862 | rv = n; | |
6863 | } | |
6864 | return NULL; | |
6865 | } | |
6866 | ||
6867 | mu->space = NULL; | |
6868 | mu->space_list = NULL; | |
6869 | mu->len = sizeof(struct imsm_update_activate_spare) * num_spares; | |
6870 | mu->next = *updates; | |
6871 | u = (struct imsm_update_activate_spare *) mu->buf; | |
6872 | ||
6873 | for (di = rv ; di ; di = di->next) { | |
6874 | u->type = update_activate_spare; | |
6875 | u->dl = (struct dl *) di->devs; | |
6876 | di->devs = NULL; | |
6877 | u->slot = di->disk.raid_disk; | |
6878 | u->array = inst; | |
6879 | u->next = u + 1; | |
6880 | u++; | |
6881 | } | |
6882 | (u-1)->next = NULL; | |
6883 | *updates = mu; | |
6884 | ||
6885 | return rv; | |
6886 | } | |
6887 | ||
6888 | static int disks_overlap(struct intel_super *super, int idx, struct imsm_update_create_array *u) | |
6889 | { | |
6890 | struct imsm_dev *dev = get_imsm_dev(super, idx); | |
6891 | struct imsm_map *map = get_imsm_map(dev, 0); | |
6892 | struct imsm_map *new_map = get_imsm_map(&u->dev, 0); | |
6893 | struct disk_info *inf = get_disk_info(u); | |
6894 | struct imsm_disk *disk; | |
6895 | int i; | |
6896 | int j; | |
6897 | ||
6898 | for (i = 0; i < map->num_members; i++) { | |
6899 | disk = get_imsm_disk(super, get_imsm_disk_idx(dev, i, -1)); | |
6900 | for (j = 0; j < new_map->num_members; j++) | |
6901 | if (serialcmp(disk->serial, inf[j].serial) == 0) | |
6902 | return 1; | |
6903 | } | |
6904 | ||
6905 | return 0; | |
6906 | } | |
6907 | ||
6908 | ||
6909 | static struct dl *get_disk_super(struct intel_super *super, int major, int minor) | |
6910 | { | |
6911 | struct dl *dl = NULL; | |
6912 | for (dl = super->disks; dl; dl = dl->next) | |
6913 | if ((dl->major == major) && (dl->minor == minor)) | |
6914 | return dl; | |
6915 | return NULL; | |
6916 | } | |
6917 | ||
6918 | static int remove_disk_super(struct intel_super *super, int major, int minor) | |
6919 | { | |
6920 | struct dl *prev = NULL; | |
6921 | struct dl *dl; | |
6922 | ||
6923 | prev = NULL; | |
6924 | for (dl = super->disks; dl; dl = dl->next) { | |
6925 | if ((dl->major == major) && (dl->minor == minor)) { | |
6926 | /* remove */ | |
6927 | if (prev) | |
6928 | prev->next = dl->next; | |
6929 | else | |
6930 | super->disks = dl->next; | |
6931 | dl->next = NULL; | |
6932 | __free_imsm_disk(dl); | |
6933 | dprintf("%s: removed %x:%x\n", | |
6934 | __func__, major, minor); | |
6935 | break; | |
6936 | } | |
6937 | prev = dl; | |
6938 | } | |
6939 | return 0; | |
6940 | } | |
6941 | ||
6942 | static void imsm_delete(struct intel_super *super, struct dl **dlp, unsigned index); | |
6943 | ||
6944 | static int add_remove_disk_update(struct intel_super *super) | |
6945 | { | |
6946 | int check_degraded = 0; | |
6947 | struct dl *disk = NULL; | |
6948 | /* add/remove some spares to/from the metadata/contrainer */ | |
6949 | while (super->disk_mgmt_list) { | |
6950 | struct dl *disk_cfg; | |
6951 | ||
6952 | disk_cfg = super->disk_mgmt_list; | |
6953 | super->disk_mgmt_list = disk_cfg->next; | |
6954 | disk_cfg->next = NULL; | |
6955 | ||
6956 | if (disk_cfg->action == DISK_ADD) { | |
6957 | disk_cfg->next = super->disks; | |
6958 | super->disks = disk_cfg; | |
6959 | check_degraded = 1; | |
6960 | dprintf("%s: added %x:%x\n", | |
6961 | __func__, disk_cfg->major, | |
6962 | disk_cfg->minor); | |
6963 | } else if (disk_cfg->action == DISK_REMOVE) { | |
6964 | dprintf("Disk remove action processed: %x.%x\n", | |
6965 | disk_cfg->major, disk_cfg->minor); | |
6966 | disk = get_disk_super(super, | |
6967 | disk_cfg->major, | |
6968 | disk_cfg->minor); | |
6969 | if (disk) { | |
6970 | /* store action status */ | |
6971 | disk->action = DISK_REMOVE; | |
6972 | /* remove spare disks only */ | |
6973 | if (disk->index == -1) { | |
6974 | remove_disk_super(super, | |
6975 | disk_cfg->major, | |
6976 | disk_cfg->minor); | |
6977 | } | |
6978 | } | |
6979 | /* release allocate disk structure */ | |
6980 | __free_imsm_disk(disk_cfg); | |
6981 | } | |
6982 | } | |
6983 | return check_degraded; | |
6984 | } | |
6985 | ||
6986 | ||
6987 | static int apply_reshape_migration_update(struct imsm_update_reshape_migration *u, | |
6988 | struct intel_super *super, | |
6989 | void ***space_list) | |
6990 | { | |
6991 | struct intel_dev *id; | |
6992 | void **tofree = NULL; | |
6993 | int ret_val = 0; | |
6994 | ||
6995 | dprintf("apply_reshape_migration_update()\n"); | |
6996 | if ((u->subdev < 0) || | |
6997 | (u->subdev > 1)) { | |
6998 | dprintf("imsm: Error: Wrong subdev: %i\n", u->subdev); | |
6999 | return ret_val; | |
7000 | } | |
7001 | if ((space_list == NULL) || (*space_list == NULL)) { | |
7002 | dprintf("imsm: Error: Memory is not allocated\n"); | |
7003 | return ret_val; | |
7004 | } | |
7005 | ||
7006 | for (id = super->devlist ; id; id = id->next) { | |
7007 | if (id->index == (unsigned)u->subdev) { | |
7008 | struct imsm_dev *dev = get_imsm_dev(super, u->subdev); | |
7009 | struct imsm_map *map; | |
7010 | struct imsm_dev *new_dev = | |
7011 | (struct imsm_dev *)*space_list; | |
7012 | struct imsm_map *migr_map = get_imsm_map(dev, 1); | |
7013 | int to_state; | |
7014 | struct dl *new_disk; | |
7015 | ||
7016 | if (new_dev == NULL) | |
7017 | return ret_val; | |
7018 | *space_list = **space_list; | |
7019 | memcpy(new_dev, dev, sizeof_imsm_dev(dev, 0)); | |
7020 | map = get_imsm_map(new_dev, 0); | |
7021 | if (migr_map) { | |
7022 | dprintf("imsm: Error: migration in progress"); | |
7023 | return ret_val; | |
7024 | } | |
7025 | ||
7026 | to_state = map->map_state; | |
7027 | if ((u->new_level == 5) && (map->raid_level == 0)) { | |
7028 | map->num_members++; | |
7029 | /* this should not happen */ | |
7030 | if (u->new_disks[0] < 0) { | |
7031 | map->failed_disk_num = | |
7032 | map->num_members - 1; | |
7033 | to_state = IMSM_T_STATE_DEGRADED; | |
7034 | } else | |
7035 | to_state = IMSM_T_STATE_NORMAL; | |
7036 | } | |
7037 | migrate(new_dev, super, to_state, MIGR_GEN_MIGR); | |
7038 | if (u->new_level > -1) | |
7039 | map->raid_level = u->new_level; | |
7040 | migr_map = get_imsm_map(new_dev, 1); | |
7041 | if ((u->new_level == 5) && | |
7042 | (migr_map->raid_level == 0)) { | |
7043 | int ord = map->num_members - 1; | |
7044 | migr_map->num_members--; | |
7045 | if (u->new_disks[0] < 0) | |
7046 | ord |= IMSM_ORD_REBUILD; | |
7047 | set_imsm_ord_tbl_ent(map, | |
7048 | map->num_members - 1, | |
7049 | ord); | |
7050 | } | |
7051 | id->dev = new_dev; | |
7052 | tofree = (void **)dev; | |
7053 | ||
7054 | /* update chunk size | |
7055 | */ | |
7056 | if (u->new_chunksize > 0) | |
7057 | map->blocks_per_strip = | |
7058 | __cpu_to_le16(u->new_chunksize * 2); | |
7059 | ||
7060 | /* add disk | |
7061 | */ | |
7062 | if ((u->new_level != 5) || | |
7063 | (migr_map->raid_level != 0) || | |
7064 | (migr_map->raid_level == map->raid_level)) | |
7065 | goto skip_disk_add; | |
7066 | ||
7067 | if (u->new_disks[0] >= 0) { | |
7068 | /* use passes spare | |
7069 | */ | |
7070 | new_disk = get_disk_super(super, | |
7071 | major(u->new_disks[0]), | |
7072 | minor(u->new_disks[0])); | |
7073 | dprintf("imsm: new disk for reshape is: %i:%i " | |
7074 | "(%p, index = %i)\n", | |
7075 | major(u->new_disks[0]), | |
7076 | minor(u->new_disks[0]), | |
7077 | new_disk, new_disk->index); | |
7078 | if (new_disk == NULL) | |
7079 | goto error_disk_add; | |
7080 | ||
7081 | new_disk->index = map->num_members - 1; | |
7082 | /* slot to fill in autolayout | |
7083 | */ | |
7084 | new_disk->raiddisk = new_disk->index; | |
7085 | new_disk->disk.status |= CONFIGURED_DISK; | |
7086 | new_disk->disk.status &= ~SPARE_DISK; | |
7087 | } else | |
7088 | goto error_disk_add; | |
7089 | ||
7090 | skip_disk_add: | |
7091 | *tofree = *space_list; | |
7092 | /* calculate new size | |
7093 | */ | |
7094 | imsm_set_array_size(new_dev); | |
7095 | ||
7096 | ret_val = 1; | |
7097 | } | |
7098 | } | |
7099 | ||
7100 | if (tofree) | |
7101 | *space_list = tofree; | |
7102 | return ret_val; | |
7103 | ||
7104 | error_disk_add: | |
7105 | dprintf("Error: imsm: Cannot find disk.\n"); | |
7106 | return ret_val; | |
7107 | } | |
7108 | ||
7109 | static int apply_update_activate_spare(struct imsm_update_activate_spare *u, | |
7110 | struct intel_super *super, | |
7111 | struct active_array *active_array) | |
7112 | { | |
7113 | struct imsm_super *mpb = super->anchor; | |
7114 | struct imsm_dev *dev = get_imsm_dev(super, u->array); | |
7115 | struct imsm_map *map = get_imsm_map(dev, 0); | |
7116 | struct imsm_map *migr_map; | |
7117 | struct active_array *a; | |
7118 | struct imsm_disk *disk; | |
7119 | __u8 to_state; | |
7120 | struct dl *dl; | |
7121 | unsigned int found; | |
7122 | int failed; | |
7123 | int victim; | |
7124 | int i; | |
7125 | int second_map_created = 0; | |
7126 | ||
7127 | for (; u; u = u->next) { | |
7128 | victim = get_imsm_disk_idx(dev, u->slot, -1); | |
7129 | ||
7130 | if (victim < 0) | |
7131 | return 0; | |
7132 | ||
7133 | for (dl = super->disks; dl; dl = dl->next) | |
7134 | if (dl == u->dl) | |
7135 | break; | |
7136 | ||
7137 | if (!dl) { | |
7138 | fprintf(stderr, "error: imsm_activate_spare passed " | |
7139 | "an unknown disk (index: %d)\n", | |
7140 | u->dl->index); | |
7141 | return 0; | |
7142 | } | |
7143 | ||
7144 | /* count failures (excluding rebuilds and the victim) | |
7145 | * to determine map[0] state | |
7146 | */ | |
7147 | failed = 0; | |
7148 | for (i = 0; i < map->num_members; i++) { | |
7149 | if (i == u->slot) | |
7150 | continue; | |
7151 | disk = get_imsm_disk(super, | |
7152 | get_imsm_disk_idx(dev, i, -1)); | |
7153 | if (!disk || is_failed(disk)) | |
7154 | failed++; | |
7155 | } | |
7156 | ||
7157 | /* adding a pristine spare, assign a new index */ | |
7158 | if (dl->index < 0) { | |
7159 | dl->index = super->anchor->num_disks; | |
7160 | super->anchor->num_disks++; | |
7161 | } | |
7162 | disk = &dl->disk; | |
7163 | disk->status |= CONFIGURED_DISK; | |
7164 | disk->status &= ~SPARE_DISK; | |
7165 | ||
7166 | /* mark rebuild */ | |
7167 | to_state = imsm_check_degraded(super, dev, failed, | |
7168 | MAP_0); | |
7169 | if (!second_map_created) { | |
7170 | second_map_created = 1; | |
7171 | map->map_state = IMSM_T_STATE_DEGRADED; | |
7172 | migrate(dev, super, to_state, MIGR_REBUILD); | |
7173 | } else | |
7174 | map->map_state = to_state; | |
7175 | migr_map = get_imsm_map(dev, 1); | |
7176 | set_imsm_ord_tbl_ent(map, u->slot, dl->index); | |
7177 | set_imsm_ord_tbl_ent(migr_map, u->slot, | |
7178 | dl->index | IMSM_ORD_REBUILD); | |
7179 | ||
7180 | /* update the family_num to mark a new container | |
7181 | * generation, being careful to record the existing | |
7182 | * family_num in orig_family_num to clean up after | |
7183 | * earlier mdadm versions that neglected to set it. | |
7184 | */ | |
7185 | if (mpb->orig_family_num == 0) | |
7186 | mpb->orig_family_num = mpb->family_num; | |
7187 | mpb->family_num += super->random; | |
7188 | ||
7189 | /* count arrays using the victim in the metadata */ | |
7190 | found = 0; | |
7191 | for (a = active_array; a ; a = a->next) { | |
7192 | dev = get_imsm_dev(super, a->info.container_member); | |
7193 | map = get_imsm_map(dev, 0); | |
7194 | ||
7195 | if (get_imsm_disk_slot(map, victim) >= 0) | |
7196 | found++; | |
7197 | } | |
7198 | ||
7199 | /* delete the victim if it is no longer being | |
7200 | * utilized anywhere | |
7201 | */ | |
7202 | if (!found) { | |
7203 | struct dl **dlp; | |
7204 | ||
7205 | /* We know that 'manager' isn't touching anything, | |
7206 | * so it is safe to delete | |
7207 | */ | |
7208 | for (dlp = &super->disks; *dlp; dlp = &(*dlp)->next) | |
7209 | if ((*dlp)->index == victim) | |
7210 | break; | |
7211 | ||
7212 | /* victim may be on the missing list */ | |
7213 | if (!*dlp) | |
7214 | for (dlp = &super->missing; *dlp; | |
7215 | dlp = &(*dlp)->next) | |
7216 | if ((*dlp)->index == victim) | |
7217 | break; | |
7218 | imsm_delete(super, dlp, victim); | |
7219 | } | |
7220 | } | |
7221 | ||
7222 | return 1; | |
7223 | } | |
7224 | ||
7225 | static int apply_reshape_container_disks_update(struct imsm_update_reshape *u, | |
7226 | struct intel_super *super, | |
7227 | void ***space_list) | |
7228 | { | |
7229 | struct dl *new_disk; | |
7230 | struct intel_dev *id; | |
7231 | int i; | |
7232 | int delta_disks = u->new_raid_disks - u->old_raid_disks; | |
7233 | int disk_count = u->old_raid_disks; | |
7234 | void **tofree = NULL; | |
7235 | int devices_to_reshape = 1; | |
7236 | struct imsm_super *mpb = super->anchor; | |
7237 | int ret_val = 0; | |
7238 | unsigned int dev_id; | |
7239 | ||
7240 | dprintf("imsm: apply_reshape_container_disks_update()\n"); | |
7241 | ||
7242 | /* enable spares to use in array */ | |
7243 | for (i = 0; i < delta_disks; i++) { | |
7244 | new_disk = get_disk_super(super, | |
7245 | major(u->new_disks[i]), | |
7246 | minor(u->new_disks[i])); | |
7247 | dprintf("imsm: new disk for reshape is: %i:%i " | |
7248 | "(%p, index = %i)\n", | |
7249 | major(u->new_disks[i]), minor(u->new_disks[i]), | |
7250 | new_disk, new_disk->index); | |
7251 | if ((new_disk == NULL) || | |
7252 | ((new_disk->index >= 0) && | |
7253 | (new_disk->index < u->old_raid_disks))) | |
7254 | goto update_reshape_exit; | |
7255 | new_disk->index = disk_count++; | |
7256 | /* slot to fill in autolayout | |
7257 | */ | |
7258 | new_disk->raiddisk = new_disk->index; | |
7259 | new_disk->disk.status |= | |
7260 | CONFIGURED_DISK; | |
7261 | new_disk->disk.status &= ~SPARE_DISK; | |
7262 | } | |
7263 | ||
7264 | dprintf("imsm: volume set mpb->num_raid_devs = %i\n", | |
7265 | mpb->num_raid_devs); | |
7266 | /* manage changes in volume | |
7267 | */ | |
7268 | for (dev_id = 0; dev_id < mpb->num_raid_devs; dev_id++) { | |
7269 | void **sp = *space_list; | |
7270 | struct imsm_dev *newdev; | |
7271 | struct imsm_map *newmap, *oldmap; | |
7272 | ||
7273 | for (id = super->devlist ; id; id = id->next) { | |
7274 | if (id->index == dev_id) | |
7275 | break; | |
7276 | } | |
7277 | if (id == NULL) | |
7278 | break; | |
7279 | if (!sp) | |
7280 | continue; | |
7281 | *space_list = *sp; | |
7282 | newdev = (void*)sp; | |
7283 | /* Copy the dev, but not (all of) the map */ | |
7284 | memcpy(newdev, id->dev, sizeof(*newdev)); | |
7285 | oldmap = get_imsm_map(id->dev, 0); | |
7286 | newmap = get_imsm_map(newdev, 0); | |
7287 | /* Copy the current map */ | |
7288 | memcpy(newmap, oldmap, sizeof_imsm_map(oldmap)); | |
7289 | /* update one device only | |
7290 | */ | |
7291 | if (devices_to_reshape) { | |
7292 | dprintf("imsm: modifying subdev: %i\n", | |
7293 | id->index); | |
7294 | devices_to_reshape--; | |
7295 | newdev->vol.migr_state = 1; | |
7296 | newdev->vol.curr_migr_unit = 0; | |
7297 | set_migr_type(newdev, MIGR_GEN_MIGR); | |
7298 | newmap->num_members = u->new_raid_disks; | |
7299 | for (i = 0; i < delta_disks; i++) { | |
7300 | set_imsm_ord_tbl_ent(newmap, | |
7301 | u->old_raid_disks + i, | |
7302 | u->old_raid_disks + i); | |
7303 | } | |
7304 | /* New map is correct, now need to save old map | |
7305 | */ | |
7306 | newmap = get_imsm_map(newdev, 1); | |
7307 | memcpy(newmap, oldmap, sizeof_imsm_map(oldmap)); | |
7308 | ||
7309 | imsm_set_array_size(newdev); | |
7310 | } | |
7311 | ||
7312 | sp = (void **)id->dev; | |
7313 | id->dev = newdev; | |
7314 | *sp = tofree; | |
7315 | tofree = sp; | |
7316 | ||
7317 | /* Clear migration record */ | |
7318 | memset(super->migr_rec, 0, sizeof(struct migr_record)); | |
7319 | } | |
7320 | if (tofree) | |
7321 | *space_list = tofree; | |
7322 | ret_val = 1; | |
7323 | ||
7324 | update_reshape_exit: | |
7325 | ||
7326 | return ret_val; | |
7327 | } | |
7328 | ||
7329 | static int apply_takeover_update(struct imsm_update_takeover *u, | |
7330 | struct intel_super *super, | |
7331 | void ***space_list) | |
7332 | { | |
7333 | struct imsm_dev *dev = NULL; | |
7334 | struct intel_dev *dv; | |
7335 | struct imsm_dev *dev_new; | |
7336 | struct imsm_map *map; | |
7337 | struct dl *dm, *du; | |
7338 | int i; | |
7339 | ||
7340 | for (dv = super->devlist; dv; dv = dv->next) | |
7341 | if (dv->index == (unsigned int)u->subarray) { | |
7342 | dev = dv->dev; | |
7343 | break; | |
7344 | } | |
7345 | ||
7346 | if (dev == NULL) | |
7347 | return 0; | |
7348 | ||
7349 | map = get_imsm_map(dev, 0); | |
7350 | ||
7351 | if (u->direction == R10_TO_R0) { | |
7352 | /* Number of failed disks must be half of initial disk number */ | |
7353 | if (imsm_count_failed(super, dev, MAP_0) != | |
7354 | (map->num_members / 2)) | |
7355 | return 0; | |
7356 | ||
7357 | /* iterate through devices to mark removed disks as spare */ | |
7358 | for (dm = super->disks; dm; dm = dm->next) { | |
7359 | if (dm->disk.status & FAILED_DISK) { | |
7360 | int idx = dm->index; | |
7361 | /* update indexes on the disk list */ | |
7362 | /* FIXME this loop-with-the-loop looks wrong, I'm not convinced | |
7363 | the index values will end up being correct.... NB */ | |
7364 | for (du = super->disks; du; du = du->next) | |
7365 | if (du->index > idx) | |
7366 | du->index--; | |
7367 | /* mark as spare disk */ | |
7368 | mark_spare(dm); | |
7369 | } | |
7370 | } | |
7371 | /* update map */ | |
7372 | map->num_members = map->num_members / 2; | |
7373 | map->map_state = IMSM_T_STATE_NORMAL; | |
7374 | map->num_domains = 1; | |
7375 | map->raid_level = 0; | |
7376 | map->failed_disk_num = -1; | |
7377 | } | |
7378 | ||
7379 | if (u->direction == R0_TO_R10) { | |
7380 | void **space; | |
7381 | /* update slots in current disk list */ | |
7382 | for (dm = super->disks; dm; dm = dm->next) { | |
7383 | if (dm->index >= 0) | |
7384 | dm->index *= 2; | |
7385 | } | |
7386 | /* create new *missing* disks */ | |
7387 | for (i = 0; i < map->num_members; i++) { | |
7388 | space = *space_list; | |
7389 | if (!space) | |
7390 | continue; | |
7391 | *space_list = *space; | |
7392 | du = (void *)space; | |
7393 | memcpy(du, super->disks, sizeof(*du)); | |
7394 | du->fd = -1; | |
7395 | du->minor = 0; | |
7396 | du->major = 0; | |
7397 | du->index = (i * 2) + 1; | |
7398 | sprintf((char *)du->disk.serial, | |
7399 | " MISSING_%d", du->index); | |
7400 | sprintf((char *)du->serial, | |
7401 | "MISSING_%d", du->index); | |
7402 | du->next = super->missing; | |
7403 | super->missing = du; | |
7404 | } | |
7405 | /* create new dev and map */ | |
7406 | space = *space_list; | |
7407 | if (!space) | |
7408 | return 0; | |
7409 | *space_list = *space; | |
7410 | dev_new = (void *)space; | |
7411 | memcpy(dev_new, dev, sizeof(*dev)); | |
7412 | /* update new map */ | |
7413 | map = get_imsm_map(dev_new, 0); | |
7414 | map->num_members = map->num_members * 2; | |
7415 | map->map_state = IMSM_T_STATE_DEGRADED; | |
7416 | map->num_domains = 2; | |
7417 | map->raid_level = 1; | |
7418 | /* replace dev<->dev_new */ | |
7419 | dv->dev = dev_new; | |
7420 | } | |
7421 | /* update disk order table */ | |
7422 | for (du = super->disks; du; du = du->next) | |
7423 | if (du->index >= 0) | |
7424 | set_imsm_ord_tbl_ent(map, du->index, du->index); | |
7425 | for (du = super->missing; du; du = du->next) | |
7426 | if (du->index >= 0) { | |
7427 | set_imsm_ord_tbl_ent(map, du->index, du->index); | |
7428 | mark_missing(dv->dev, &du->disk, du->index); | |
7429 | } | |
7430 | ||
7431 | return 1; | |
7432 | } | |
7433 | ||
7434 | static void imsm_process_update(struct supertype *st, | |
7435 | struct metadata_update *update) | |
7436 | { | |
7437 | /** | |
7438 | * crack open the metadata_update envelope to find the update record | |
7439 | * update can be one of: | |
7440 | * update_reshape_container_disks - all the arrays in the container | |
7441 | * are being reshaped to have more devices. We need to mark | |
7442 | * the arrays for general migration and convert selected spares | |
7443 | * into active devices. | |
7444 | * update_activate_spare - a spare device has replaced a failed | |
7445 | * device in an array, update the disk_ord_tbl. If this disk is | |
7446 | * present in all member arrays then also clear the SPARE_DISK | |
7447 | * flag | |
7448 | * update_create_array | |
7449 | * update_kill_array | |
7450 | * update_rename_array | |
7451 | * update_add_remove_disk | |
7452 | */ | |
7453 | struct intel_super *super = st->sb; | |
7454 | struct imsm_super *mpb; | |
7455 | enum imsm_update_type type = *(enum imsm_update_type *) update->buf; | |
7456 | ||
7457 | /* update requires a larger buf but the allocation failed */ | |
7458 | if (super->next_len && !super->next_buf) { | |
7459 | super->next_len = 0; | |
7460 | return; | |
7461 | } | |
7462 | ||
7463 | if (super->next_buf) { | |
7464 | memcpy(super->next_buf, super->buf, super->len); | |
7465 | free(super->buf); | |
7466 | super->len = super->next_len; | |
7467 | super->buf = super->next_buf; | |
7468 | ||
7469 | super->next_len = 0; | |
7470 | super->next_buf = NULL; | |
7471 | } | |
7472 | ||
7473 | mpb = super->anchor; | |
7474 | ||
7475 | switch (type) { | |
7476 | case update_general_migration_checkpoint: { | |
7477 | struct intel_dev *id; | |
7478 | struct imsm_update_general_migration_checkpoint *u = | |
7479 | (void *)update->buf; | |
7480 | ||
7481 | dprintf("imsm: process_update() " | |
7482 | "for update_general_migration_checkpoint called\n"); | |
7483 | ||
7484 | /* find device under general migration */ | |
7485 | for (id = super->devlist ; id; id = id->next) { | |
7486 | if (is_gen_migration(id->dev)) { | |
7487 | id->dev->vol.curr_migr_unit = | |
7488 | __cpu_to_le32(u->curr_migr_unit); | |
7489 | super->updates_pending++; | |
7490 | } | |
7491 | } | |
7492 | break; | |
7493 | } | |
7494 | case update_takeover: { | |
7495 | struct imsm_update_takeover *u = (void *)update->buf; | |
7496 | if (apply_takeover_update(u, super, &update->space_list)) { | |
7497 | imsm_update_version_info(super); | |
7498 | super->updates_pending++; | |
7499 | } | |
7500 | break; | |
7501 | } | |
7502 | ||
7503 | case update_reshape_container_disks: { | |
7504 | struct imsm_update_reshape *u = (void *)update->buf; | |
7505 | if (apply_reshape_container_disks_update( | |
7506 | u, super, &update->space_list)) | |
7507 | super->updates_pending++; | |
7508 | break; | |
7509 | } | |
7510 | case update_reshape_migration: { | |
7511 | struct imsm_update_reshape_migration *u = (void *)update->buf; | |
7512 | if (apply_reshape_migration_update( | |
7513 | u, super, &update->space_list)) | |
7514 | super->updates_pending++; | |
7515 | break; | |
7516 | } | |
7517 | case update_activate_spare: { | |
7518 | struct imsm_update_activate_spare *u = (void *) update->buf; | |
7519 | if (apply_update_activate_spare(u, super, st->arrays)) | |
7520 | super->updates_pending++; | |
7521 | break; | |
7522 | } | |
7523 | case update_create_array: { | |
7524 | /* someone wants to create a new array, we need to be aware of | |
7525 | * a few races/collisions: | |
7526 | * 1/ 'Create' called by two separate instances of mdadm | |
7527 | * 2/ 'Create' versus 'activate_spare': mdadm has chosen | |
7528 | * devices that have since been assimilated via | |
7529 | * activate_spare. | |
7530 | * In the event this update can not be carried out mdadm will | |
7531 | * (FIX ME) notice that its update did not take hold. | |
7532 | */ | |
7533 | struct imsm_update_create_array *u = (void *) update->buf; | |
7534 | struct intel_dev *dv; | |
7535 | struct imsm_dev *dev; | |
7536 | struct imsm_map *map, *new_map; | |
7537 | unsigned long long start, end; | |
7538 | unsigned long long new_start, new_end; | |
7539 | int i; | |
7540 | struct disk_info *inf; | |
7541 | struct dl *dl; | |
7542 | ||
7543 | /* handle racing creates: first come first serve */ | |
7544 | if (u->dev_idx < mpb->num_raid_devs) { | |
7545 | dprintf("%s: subarray %d already defined\n", | |
7546 | __func__, u->dev_idx); | |
7547 | goto create_error; | |
7548 | } | |
7549 | ||
7550 | /* check update is next in sequence */ | |
7551 | if (u->dev_idx != mpb->num_raid_devs) { | |
7552 | dprintf("%s: can not create array %d expected index %d\n", | |
7553 | __func__, u->dev_idx, mpb->num_raid_devs); | |
7554 | goto create_error; | |
7555 | } | |
7556 | ||
7557 | new_map = get_imsm_map(&u->dev, 0); | |
7558 | new_start = __le32_to_cpu(new_map->pba_of_lba0); | |
7559 | new_end = new_start + __le32_to_cpu(new_map->blocks_per_member); | |
7560 | inf = get_disk_info(u); | |
7561 | ||
7562 | /* handle activate_spare versus create race: | |
7563 | * check to make sure that overlapping arrays do not include | |
7564 | * overalpping disks | |
7565 | */ | |
7566 | for (i = 0; i < mpb->num_raid_devs; i++) { | |
7567 | dev = get_imsm_dev(super, i); | |
7568 | map = get_imsm_map(dev, 0); | |
7569 | start = __le32_to_cpu(map->pba_of_lba0); | |
7570 | end = start + __le32_to_cpu(map->blocks_per_member); | |
7571 | if ((new_start >= start && new_start <= end) || | |
7572 | (start >= new_start && start <= new_end)) | |
7573 | /* overlap */; | |
7574 | else | |
7575 | continue; | |
7576 | ||
7577 | if (disks_overlap(super, i, u)) { | |
7578 | dprintf("%s: arrays overlap\n", __func__); | |
7579 | goto create_error; | |
7580 | } | |
7581 | } | |
7582 | ||
7583 | /* check that prepare update was successful */ | |
7584 | if (!update->space) { | |
7585 | dprintf("%s: prepare update failed\n", __func__); | |
7586 | goto create_error; | |
7587 | } | |
7588 | ||
7589 | /* check that all disks are still active before committing | |
7590 | * changes. FIXME: could we instead handle this by creating a | |
7591 | * degraded array? That's probably not what the user expects, | |
7592 | * so better to drop this update on the floor. | |
7593 | */ | |
7594 | for (i = 0; i < new_map->num_members; i++) { | |
7595 | dl = serial_to_dl(inf[i].serial, super); | |
7596 | if (!dl) { | |
7597 | dprintf("%s: disk disappeared\n", __func__); | |
7598 | goto create_error; | |
7599 | } | |
7600 | } | |
7601 | ||
7602 | super->updates_pending++; | |
7603 | ||
7604 | /* convert spares to members and fixup ord_tbl */ | |
7605 | for (i = 0; i < new_map->num_members; i++) { | |
7606 | dl = serial_to_dl(inf[i].serial, super); | |
7607 | if (dl->index == -1) { | |
7608 | dl->index = mpb->num_disks; | |
7609 | mpb->num_disks++; | |
7610 | dl->disk.status |= CONFIGURED_DISK; | |
7611 | dl->disk.status &= ~SPARE_DISK; | |
7612 | } | |
7613 | set_imsm_ord_tbl_ent(new_map, i, dl->index); | |
7614 | } | |
7615 | ||
7616 | dv = update->space; | |
7617 | dev = dv->dev; | |
7618 | update->space = NULL; | |
7619 | imsm_copy_dev(dev, &u->dev); | |
7620 | dv->index = u->dev_idx; | |
7621 | dv->next = super->devlist; | |
7622 | super->devlist = dv; | |
7623 | mpb->num_raid_devs++; | |
7624 | ||
7625 | imsm_update_version_info(super); | |
7626 | break; | |
7627 | create_error: | |
7628 | /* mdmon knows how to release update->space, but not | |
7629 | * ((struct intel_dev *) update->space)->dev | |
7630 | */ | |
7631 | if (update->space) { | |
7632 | dv = update->space; | |
7633 | free(dv->dev); | |
7634 | } | |
7635 | break; | |
7636 | } | |
7637 | case update_kill_array: { | |
7638 | struct imsm_update_kill_array *u = (void *) update->buf; | |
7639 | int victim = u->dev_idx; | |
7640 | struct active_array *a; | |
7641 | struct intel_dev **dp; | |
7642 | struct imsm_dev *dev; | |
7643 | ||
7644 | /* sanity check that we are not affecting the uuid of | |
7645 | * active arrays, or deleting an active array | |
7646 | * | |
7647 | * FIXME when immutable ids are available, but note that | |
7648 | * we'll also need to fixup the invalidated/active | |
7649 | * subarray indexes in mdstat | |
7650 | */ | |
7651 | for (a = st->arrays; a; a = a->next) | |
7652 | if (a->info.container_member >= victim) | |
7653 | break; | |
7654 | /* by definition if mdmon is running at least one array | |
7655 | * is active in the container, so checking | |
7656 | * mpb->num_raid_devs is just extra paranoia | |
7657 | */ | |
7658 | dev = get_imsm_dev(super, victim); | |
7659 | if (a || !dev || mpb->num_raid_devs == 1) { | |
7660 | dprintf("failed to delete subarray-%d\n", victim); | |
7661 | break; | |
7662 | } | |
7663 | ||
7664 | for (dp = &super->devlist; *dp;) | |
7665 | if ((*dp)->index == (unsigned)super->current_vol) { | |
7666 | *dp = (*dp)->next; | |
7667 | } else { | |
7668 | if ((*dp)->index > (unsigned)victim) | |
7669 | (*dp)->index--; | |
7670 | dp = &(*dp)->next; | |
7671 | } | |
7672 | mpb->num_raid_devs--; | |
7673 | super->updates_pending++; | |
7674 | break; | |
7675 | } | |
7676 | case update_rename_array: { | |
7677 | struct imsm_update_rename_array *u = (void *) update->buf; | |
7678 | char name[MAX_RAID_SERIAL_LEN+1]; | |
7679 | int target = u->dev_idx; | |
7680 | struct active_array *a; | |
7681 | struct imsm_dev *dev; | |
7682 | ||
7683 | /* sanity check that we are not affecting the uuid of | |
7684 | * an active array | |
7685 | */ | |
7686 | snprintf(name, MAX_RAID_SERIAL_LEN, "%s", (char *) u->name); | |
7687 | name[MAX_RAID_SERIAL_LEN] = '\0'; | |
7688 | for (a = st->arrays; a; a = a->next) | |
7689 | if (a->info.container_member == target) | |
7690 | break; | |
7691 | dev = get_imsm_dev(super, u->dev_idx); | |
7692 | if (a || !dev || !check_name(super, name, 1)) { | |
7693 | dprintf("failed to rename subarray-%d\n", target); | |
7694 | break; | |
7695 | } | |
7696 | ||
7697 | snprintf((char *) dev->volume, MAX_RAID_SERIAL_LEN, "%s", name); | |
7698 | super->updates_pending++; | |
7699 | break; | |
7700 | } | |
7701 | case update_add_remove_disk: { | |
7702 | /* we may be able to repair some arrays if disks are | |
7703 | * being added, check teh status of add_remove_disk | |
7704 | * if discs has been added. | |
7705 | */ | |
7706 | if (add_remove_disk_update(super)) { | |
7707 | struct active_array *a; | |
7708 | ||
7709 | super->updates_pending++; | |
7710 | for (a = st->arrays; a; a = a->next) | |
7711 | a->check_degraded = 1; | |
7712 | } | |
7713 | break; | |
7714 | } | |
7715 | default: | |
7716 | fprintf(stderr, "error: unsuported process update type:" | |
7717 | "(type: %d)\n", type); | |
7718 | } | |
7719 | } | |
7720 | ||
7721 | static struct mdinfo *get_spares_for_grow(struct supertype *st); | |
7722 | ||
7723 | static void imsm_prepare_update(struct supertype *st, | |
7724 | struct metadata_update *update) | |
7725 | { | |
7726 | /** | |
7727 | * Allocate space to hold new disk entries, raid-device entries or a new | |
7728 | * mpb if necessary. The manager synchronously waits for updates to | |
7729 | * complete in the monitor, so new mpb buffers allocated here can be | |
7730 | * integrated by the monitor thread without worrying about live pointers | |
7731 | * in the manager thread. | |
7732 | */ | |
7733 | enum imsm_update_type type = *(enum imsm_update_type *) update->buf; | |
7734 | struct intel_super *super = st->sb; | |
7735 | struct imsm_super *mpb = super->anchor; | |
7736 | size_t buf_len; | |
7737 | size_t len = 0; | |
7738 | ||
7739 | switch (type) { | |
7740 | case update_general_migration_checkpoint: | |
7741 | dprintf("imsm: prepare_update() " | |
7742 | "for update_general_migration_checkpoint called\n"); | |
7743 | break; | |
7744 | case update_takeover: { | |
7745 | struct imsm_update_takeover *u = (void *)update->buf; | |
7746 | if (u->direction == R0_TO_R10) { | |
7747 | void **tail = (void **)&update->space_list; | |
7748 | struct imsm_dev *dev = get_imsm_dev(super, u->subarray); | |
7749 | struct imsm_map *map = get_imsm_map(dev, 0); | |
7750 | int num_members = map->num_members; | |
7751 | void *space; | |
7752 | int size, i; | |
7753 | int err = 0; | |
7754 | /* allocate memory for added disks */ | |
7755 | for (i = 0; i < num_members; i++) { | |
7756 | size = sizeof(struct dl); | |
7757 | space = malloc(size); | |
7758 | if (!space) { | |
7759 | err++; | |
7760 | break; | |
7761 | } | |
7762 | *tail = space; | |
7763 | tail = space; | |
7764 | *tail = NULL; | |
7765 | } | |
7766 | /* allocate memory for new device */ | |
7767 | size = sizeof_imsm_dev(super->devlist->dev, 0) + | |
7768 | (num_members * sizeof(__u32)); | |
7769 | space = malloc(size); | |
7770 | if (!space) | |
7771 | err++; | |
7772 | else { | |
7773 | *tail = space; | |
7774 | tail = space; | |
7775 | *tail = NULL; | |
7776 | } | |
7777 | if (!err) { | |
7778 | len = disks_to_mpb_size(num_members * 2); | |
7779 | } else { | |
7780 | /* if allocation didn't success, free buffer */ | |
7781 | while (update->space_list) { | |
7782 | void **sp = update->space_list; | |
7783 | update->space_list = *sp; | |
7784 | free(sp); | |
7785 | } | |
7786 | } | |
7787 | } | |
7788 | ||
7789 | break; | |
7790 | } | |
7791 | case update_reshape_container_disks: { | |
7792 | /* Every raid device in the container is about to | |
7793 | * gain some more devices, and we will enter a | |
7794 | * reconfiguration. | |
7795 | * So each 'imsm_map' will be bigger, and the imsm_vol | |
7796 | * will now hold 2 of them. | |
7797 | * Thus we need new 'struct imsm_dev' allocations sized | |
7798 | * as sizeof_imsm_dev but with more devices in both maps. | |
7799 | */ | |
7800 | struct imsm_update_reshape *u = (void *)update->buf; | |
7801 | struct intel_dev *dl; | |
7802 | void **space_tail = (void**)&update->space_list; | |
7803 | ||
7804 | dprintf("imsm: imsm_prepare_update() for update_reshape\n"); | |
7805 | ||
7806 | for (dl = super->devlist; dl; dl = dl->next) { | |
7807 | int size = sizeof_imsm_dev(dl->dev, 1); | |
7808 | void *s; | |
7809 | if (u->new_raid_disks > u->old_raid_disks) | |
7810 | size += sizeof(__u32)*2* | |
7811 | (u->new_raid_disks - u->old_raid_disks); | |
7812 | s = malloc(size); | |
7813 | if (!s) | |
7814 | break; | |
7815 | *space_tail = s; | |
7816 | space_tail = s; | |
7817 | *space_tail = NULL; | |
7818 | } | |
7819 | ||
7820 | len = disks_to_mpb_size(u->new_raid_disks); | |
7821 | dprintf("New anchor length is %llu\n", (unsigned long long)len); | |
7822 | break; | |
7823 | } | |
7824 | case update_reshape_migration: { | |
7825 | /* for migration level 0->5 we need to add disks | |
7826 | * so the same as for container operation we will copy | |
7827 | * device to the bigger location. | |
7828 | * in memory prepared device and new disk area are prepared | |
7829 | * for usage in process update | |
7830 | */ | |
7831 | struct imsm_update_reshape_migration *u = (void *)update->buf; | |
7832 | struct intel_dev *id; | |
7833 | void **space_tail = (void **)&update->space_list; | |
7834 | int size; | |
7835 | void *s; | |
7836 | int current_level = -1; | |
7837 | ||
7838 | dprintf("imsm: imsm_prepare_update() for update_reshape\n"); | |
7839 | ||
7840 | /* add space for bigger array in update | |
7841 | */ | |
7842 | for (id = super->devlist; id; id = id->next) { | |
7843 | if (id->index == (unsigned)u->subdev) { | |
7844 | size = sizeof_imsm_dev(id->dev, 1); | |
7845 | if (u->new_raid_disks > u->old_raid_disks) | |
7846 | size += sizeof(__u32)*2* | |
7847 | (u->new_raid_disks - u->old_raid_disks); | |
7848 | s = malloc(size); | |
7849 | if (!s) | |
7850 | break; | |
7851 | *space_tail = s; | |
7852 | space_tail = s; | |
7853 | *space_tail = NULL; | |
7854 | break; | |
7855 | } | |
7856 | } | |
7857 | if (update->space_list == NULL) | |
7858 | break; | |
7859 | ||
7860 | /* add space for disk in update | |
7861 | */ | |
7862 | size = sizeof(struct dl); | |
7863 | s = malloc(size); | |
7864 | if (!s) { | |
7865 | free(update->space_list); | |
7866 | update->space_list = NULL; | |
7867 | break; | |
7868 | } | |
7869 | *space_tail = s; | |
7870 | space_tail = s; | |
7871 | *space_tail = NULL; | |
7872 | ||
7873 | /* add spare device to update | |
7874 | */ | |
7875 | for (id = super->devlist ; id; id = id->next) | |
7876 | if (id->index == (unsigned)u->subdev) { | |
7877 | struct imsm_dev *dev; | |
7878 | struct imsm_map *map; | |
7879 | ||
7880 | dev = get_imsm_dev(super, u->subdev); | |
7881 | map = get_imsm_map(dev, 0); | |
7882 | current_level = map->raid_level; | |
7883 | break; | |
7884 | } | |
7885 | if ((u->new_level == 5) && (u->new_level != current_level)) { | |
7886 | struct mdinfo *spares; | |
7887 | ||
7888 | spares = get_spares_for_grow(st); | |
7889 | if (spares) { | |
7890 | struct dl *dl; | |
7891 | struct mdinfo *dev; | |
7892 | ||
7893 | dev = spares->devs; | |
7894 | if (dev) { | |
7895 | u->new_disks[0] = | |
7896 | makedev(dev->disk.major, | |
7897 | dev->disk.minor); | |
7898 | dl = get_disk_super(super, | |
7899 | dev->disk.major, | |
7900 | dev->disk.minor); | |
7901 | dl->index = u->old_raid_disks; | |
7902 | dev = dev->next; | |
7903 | } | |
7904 | sysfs_free(spares); | |
7905 | } | |
7906 | } | |
7907 | len = disks_to_mpb_size(u->new_raid_disks); | |
7908 | dprintf("New anchor length is %llu\n", (unsigned long long)len); | |
7909 | break; | |
7910 | } | |
7911 | case update_create_array: { | |
7912 | struct imsm_update_create_array *u = (void *) update->buf; | |
7913 | struct intel_dev *dv; | |
7914 | struct imsm_dev *dev = &u->dev; | |
7915 | struct imsm_map *map = get_imsm_map(dev, 0); | |
7916 | struct dl *dl; | |
7917 | struct disk_info *inf; | |
7918 | int i; | |
7919 | int activate = 0; | |
7920 | ||
7921 | inf = get_disk_info(u); | |
7922 | len = sizeof_imsm_dev(dev, 1); | |
7923 | /* allocate a new super->devlist entry */ | |
7924 | dv = malloc(sizeof(*dv)); | |
7925 | if (dv) { | |
7926 | dv->dev = malloc(len); | |
7927 | if (dv->dev) | |
7928 | update->space = dv; | |
7929 | else { | |
7930 | free(dv); | |
7931 | update->space = NULL; | |
7932 | } | |
7933 | } | |
7934 | ||
7935 | /* count how many spares will be converted to members */ | |
7936 | for (i = 0; i < map->num_members; i++) { | |
7937 | dl = serial_to_dl(inf[i].serial, super); | |
7938 | if (!dl) { | |
7939 | /* hmm maybe it failed?, nothing we can do about | |
7940 | * it here | |
7941 | */ | |
7942 | continue; | |
7943 | } | |
7944 | if (count_memberships(dl, super) == 0) | |
7945 | activate++; | |
7946 | } | |
7947 | len += activate * sizeof(struct imsm_disk); | |
7948 | break; | |
7949 | default: | |
7950 | break; | |
7951 | } | |
7952 | } | |
7953 | ||
7954 | /* check if we need a larger metadata buffer */ | |
7955 | if (super->next_buf) | |
7956 | buf_len = super->next_len; | |
7957 | else | |
7958 | buf_len = super->len; | |
7959 | ||
7960 | if (__le32_to_cpu(mpb->mpb_size) + len > buf_len) { | |
7961 | /* ok we need a larger buf than what is currently allocated | |
7962 | * if this allocation fails process_update will notice that | |
7963 | * ->next_len is set and ->next_buf is NULL | |
7964 | */ | |
7965 | buf_len = ROUND_UP(__le32_to_cpu(mpb->mpb_size) + len, 512); | |
7966 | if (super->next_buf) | |
7967 | free(super->next_buf); | |
7968 | ||
7969 | super->next_len = buf_len; | |
7970 | if (posix_memalign(&super->next_buf, 512, buf_len) == 0) | |
7971 | memset(super->next_buf, 0, buf_len); | |
7972 | else | |
7973 | super->next_buf = NULL; | |
7974 | } | |
7975 | } | |
7976 | ||
7977 | /* must be called while manager is quiesced */ | |
7978 | static void imsm_delete(struct intel_super *super, struct dl **dlp, unsigned index) | |
7979 | { | |
7980 | struct imsm_super *mpb = super->anchor; | |
7981 | struct dl *iter; | |
7982 | struct imsm_dev *dev; | |
7983 | struct imsm_map *map; | |
7984 | int i, j, num_members; | |
7985 | __u32 ord; | |
7986 | ||
7987 | dprintf("%s: deleting device[%d] from imsm_super\n", | |
7988 | __func__, index); | |
7989 | ||
7990 | /* shift all indexes down one */ | |
7991 | for (iter = super->disks; iter; iter = iter->next) | |
7992 | if (iter->index > (int)index) | |
7993 | iter->index--; | |
7994 | for (iter = super->missing; iter; iter = iter->next) | |
7995 | if (iter->index > (int)index) | |
7996 | iter->index--; | |
7997 | ||
7998 | for (i = 0; i < mpb->num_raid_devs; i++) { | |
7999 | dev = get_imsm_dev(super, i); | |
8000 | map = get_imsm_map(dev, 0); | |
8001 | num_members = map->num_members; | |
8002 | for (j = 0; j < num_members; j++) { | |
8003 | /* update ord entries being careful not to propagate | |
8004 | * ord-flags to the first map | |
8005 | */ | |
8006 | ord = get_imsm_ord_tbl_ent(dev, j, -1); | |
8007 | ||
8008 | if (ord_to_idx(ord) <= index) | |
8009 | continue; | |
8010 | ||
8011 | map = get_imsm_map(dev, 0); | |
8012 | set_imsm_ord_tbl_ent(map, j, ord_to_idx(ord - 1)); | |
8013 | map = get_imsm_map(dev, 1); | |
8014 | if (map) | |
8015 | set_imsm_ord_tbl_ent(map, j, ord - 1); | |
8016 | } | |
8017 | } | |
8018 | ||
8019 | mpb->num_disks--; | |
8020 | super->updates_pending++; | |
8021 | if (*dlp) { | |
8022 | struct dl *dl = *dlp; | |
8023 | ||
8024 | *dlp = (*dlp)->next; | |
8025 | __free_imsm_disk(dl); | |
8026 | } | |
8027 | } | |
8028 | #endif /* MDASSEMBLE */ | |
8029 | ||
8030 | static void close_targets(int *targets, int new_disks) | |
8031 | { | |
8032 | int i; | |
8033 | ||
8034 | if (!targets) | |
8035 | return; | |
8036 | ||
8037 | for (i = 0; i < new_disks; i++) { | |
8038 | if (targets[i] >= 0) { | |
8039 | close(targets[i]); | |
8040 | targets[i] = -1; | |
8041 | } | |
8042 | } | |
8043 | } | |
8044 | ||
8045 | static int imsm_get_allowed_degradation(int level, int raid_disks, | |
8046 | struct intel_super *super, | |
8047 | struct imsm_dev *dev) | |
8048 | { | |
8049 | switch (level) { | |
8050 | case 10:{ | |
8051 | int ret_val = 0; | |
8052 | struct imsm_map *map; | |
8053 | int i; | |
8054 | ||
8055 | ret_val = raid_disks/2; | |
8056 | /* check map if all disks pairs not failed | |
8057 | * in both maps | |
8058 | */ | |
8059 | map = get_imsm_map(dev, 0); | |
8060 | for (i = 0; i < ret_val; i++) { | |
8061 | int degradation = 0; | |
8062 | if (get_imsm_disk(super, i) == NULL) | |
8063 | degradation++; | |
8064 | if (get_imsm_disk(super, i + 1) == NULL) | |
8065 | degradation++; | |
8066 | if (degradation == 2) | |
8067 | return 0; | |
8068 | } | |
8069 | map = get_imsm_map(dev, 1); | |
8070 | /* if there is no second map | |
8071 | * result can be returned | |
8072 | */ | |
8073 | if (map == NULL) | |
8074 | return ret_val; | |
8075 | /* check degradation in second map | |
8076 | */ | |
8077 | for (i = 0; i < ret_val; i++) { | |
8078 | int degradation = 0; | |
8079 | if (get_imsm_disk(super, i) == NULL) | |
8080 | degradation++; | |
8081 | if (get_imsm_disk(super, i + 1) == NULL) | |
8082 | degradation++; | |
8083 | if (degradation == 2) | |
8084 | return 0; | |
8085 | } | |
8086 | return ret_val; | |
8087 | } | |
8088 | case 5: | |
8089 | return 1; | |
8090 | case 6: | |
8091 | return 2; | |
8092 | default: | |
8093 | return 0; | |
8094 | } | |
8095 | } | |
8096 | ||
8097 | ||
8098 | /******************************************************************************* | |
8099 | * Function: open_backup_targets | |
8100 | * Description: Function opens file descriptors for all devices given in | |
8101 | * info->devs | |
8102 | * Parameters: | |
8103 | * info : general array info | |
8104 | * raid_disks : number of disks | |
8105 | * raid_fds : table of device's file descriptors | |
8106 | * super : intel super for raid10 degradation check | |
8107 | * dev : intel device for raid10 degradation check | |
8108 | * Returns: | |
8109 | * 0 : success | |
8110 | * -1 : fail | |
8111 | ******************************************************************************/ | |
8112 | int open_backup_targets(struct mdinfo *info, int raid_disks, int *raid_fds, | |
8113 | struct intel_super *super, struct imsm_dev *dev) | |
8114 | { | |
8115 | struct mdinfo *sd; | |
8116 | int i; | |
8117 | int opened = 0; | |
8118 | ||
8119 | for (i = 0; i < raid_disks; i++) | |
8120 | raid_fds[i] = -1; | |
8121 | ||
8122 | for (sd = info->devs ; sd ; sd = sd->next) { | |
8123 | char *dn; | |
8124 | ||
8125 | if (sd->disk.state & (1<<MD_DISK_FAULTY)) { | |
8126 | dprintf("disk is faulty!!\n"); | |
8127 | continue; | |
8128 | } | |
8129 | ||
8130 | if ((sd->disk.raid_disk >= raid_disks) || | |
8131 | (sd->disk.raid_disk < 0)) | |
8132 | continue; | |
8133 | ||
8134 | dn = map_dev(sd->disk.major, | |
8135 | sd->disk.minor, 1); | |
8136 | raid_fds[sd->disk.raid_disk] = dev_open(dn, O_RDWR); | |
8137 | if (raid_fds[sd->disk.raid_disk] < 0) { | |
8138 | fprintf(stderr, "cannot open component\n"); | |
8139 | continue; | |
8140 | } | |
8141 | opened++; | |
8142 | } | |
8143 | /* check if maximum array degradation level is not exceeded | |
8144 | */ | |
8145 | if ((raid_disks - opened) > | |
8146 | imsm_get_allowed_degradation(info->new_level, | |
8147 | raid_disks, | |
8148 | super, dev)) { | |
8149 | fprintf(stderr, "Not enough disks can be opened.\n"); | |
8150 | close_targets(raid_fds, raid_disks); | |
8151 | return -2; | |
8152 | } | |
8153 | return 0; | |
8154 | } | |
8155 | ||
8156 | #ifndef MDASSEMBLE | |
8157 | /******************************************************************************* | |
8158 | * Function: init_migr_record_imsm | |
8159 | * Description: Function inits imsm migration record | |
8160 | * Parameters: | |
8161 | * super : imsm internal array info | |
8162 | * dev : device under migration | |
8163 | * info : general array info to find the smallest device | |
8164 | * Returns: | |
8165 | * none | |
8166 | ******************************************************************************/ | |
8167 | void init_migr_record_imsm(struct supertype *st, struct imsm_dev *dev, | |
8168 | struct mdinfo *info) | |
8169 | { | |
8170 | struct intel_super *super = st->sb; | |
8171 | struct migr_record *migr_rec = super->migr_rec; | |
8172 | int new_data_disks; | |
8173 | unsigned long long dsize, dev_sectors; | |
8174 | long long unsigned min_dev_sectors = -1LLU; | |
8175 | struct mdinfo *sd; | |
8176 | char nm[30]; | |
8177 | int fd; | |
8178 | struct imsm_map *map_dest = get_imsm_map(dev, 0); | |
8179 | struct imsm_map *map_src = get_imsm_map(dev, 1); | |
8180 | unsigned long long num_migr_units; | |
8181 | unsigned long long array_blocks; | |
8182 | ||
8183 | memset(migr_rec, 0, sizeof(struct migr_record)); | |
8184 | migr_rec->family_num = __cpu_to_le32(super->anchor->family_num); | |
8185 | ||
8186 | /* only ascending reshape supported now */ | |
8187 | migr_rec->ascending_migr = __cpu_to_le32(1); | |
8188 | ||
8189 | migr_rec->dest_depth_per_unit = GEN_MIGR_AREA_SIZE / | |
8190 | max(map_dest->blocks_per_strip, map_src->blocks_per_strip); | |
8191 | migr_rec->dest_depth_per_unit *= map_dest->blocks_per_strip; | |
8192 | new_data_disks = imsm_num_data_members(dev, 0); | |
8193 | migr_rec->blocks_per_unit = | |
8194 | __cpu_to_le32(migr_rec->dest_depth_per_unit * new_data_disks); | |
8195 | migr_rec->dest_depth_per_unit = | |
8196 | __cpu_to_le32(migr_rec->dest_depth_per_unit); | |
8197 | array_blocks = info->component_size * new_data_disks; | |
8198 | num_migr_units = | |
8199 | array_blocks / __le32_to_cpu(migr_rec->blocks_per_unit); | |
8200 | ||
8201 | if (array_blocks % __le32_to_cpu(migr_rec->blocks_per_unit)) | |
8202 | num_migr_units++; | |
8203 | migr_rec->num_migr_units = __cpu_to_le32(num_migr_units); | |
8204 | ||
8205 | migr_rec->post_migr_vol_cap = dev->size_low; | |
8206 | migr_rec->post_migr_vol_cap_hi = dev->size_high; | |
8207 | ||
8208 | ||
8209 | /* Find the smallest dev */ | |
8210 | for (sd = info->devs ; sd ; sd = sd->next) { | |
8211 | sprintf(nm, "%d:%d", sd->disk.major, sd->disk.minor); | |
8212 | fd = dev_open(nm, O_RDONLY); | |
8213 | if (fd < 0) | |
8214 | continue; | |
8215 | get_dev_size(fd, NULL, &dsize); | |
8216 | dev_sectors = dsize / 512; | |
8217 | if (dev_sectors < min_dev_sectors) | |
8218 | min_dev_sectors = dev_sectors; | |
8219 | close(fd); | |
8220 | } | |
8221 | migr_rec->ckpt_area_pba = __cpu_to_le32(min_dev_sectors - | |
8222 | RAID_DISK_RESERVED_BLOCKS_IMSM_HI); | |
8223 | ||
8224 | write_imsm_migr_rec(st); | |
8225 | ||
8226 | return; | |
8227 | } | |
8228 | ||
8229 | /******************************************************************************* | |
8230 | * Function: save_backup_imsm | |
8231 | * Description: Function saves critical data stripes to Migration Copy Area | |
8232 | * and updates the current migration unit status. | |
8233 | * Use restore_stripes() to form a destination stripe, | |
8234 | * and to write it to the Copy Area. | |
8235 | * Parameters: | |
8236 | * st : supertype information | |
8237 | * dev : imsm device that backup is saved for | |
8238 | * info : general array info | |
8239 | * buf : input buffer | |
8240 | * length : length of data to backup (blocks_per_unit) | |
8241 | * Returns: | |
8242 | * 0 : success | |
8243 | *, -1 : fail | |
8244 | ******************************************************************************/ | |
8245 | int save_backup_imsm(struct supertype *st, | |
8246 | struct imsm_dev *dev, | |
8247 | struct mdinfo *info, | |
8248 | void *buf, | |
8249 | int length) | |
8250 | { | |
8251 | int rv = -1; | |
8252 | struct intel_super *super = st->sb; | |
8253 | unsigned long long *target_offsets = NULL; | |
8254 | int *targets = NULL; | |
8255 | int i; | |
8256 | struct imsm_map *map_dest = get_imsm_map(dev, 0); | |
8257 | int new_disks = map_dest->num_members; | |
8258 | int dest_layout = 0; | |
8259 | int dest_chunk; | |
8260 | unsigned long long start; | |
8261 | int data_disks = imsm_num_data_members(dev, 0); | |
8262 | ||
8263 | targets = malloc(new_disks * sizeof(int)); | |
8264 | if (!targets) | |
8265 | goto abort; | |
8266 | ||
8267 | for (i = 0; i < new_disks; i++) | |
8268 | targets[i] = -1; | |
8269 | ||
8270 | target_offsets = malloc(new_disks * sizeof(unsigned long long)); | |
8271 | if (!target_offsets) | |
8272 | goto abort; | |
8273 | ||
8274 | start = info->reshape_progress * 512; | |
8275 | for (i = 0; i < new_disks; i++) { | |
8276 | target_offsets[i] = (unsigned long long) | |
8277 | __le32_to_cpu(super->migr_rec->ckpt_area_pba) * 512; | |
8278 | /* move back copy area adderss, it will be moved forward | |
8279 | * in restore_stripes() using start input variable | |
8280 | */ | |
8281 | target_offsets[i] -= start/data_disks; | |
8282 | } | |
8283 | ||
8284 | if (open_backup_targets(info, new_disks, targets, | |
8285 | super, dev)) | |
8286 | goto abort; | |
8287 | ||
8288 | dest_layout = imsm_level_to_layout(map_dest->raid_level); | |
8289 | dest_chunk = __le16_to_cpu(map_dest->blocks_per_strip) * 512; | |
8290 | ||
8291 | if (restore_stripes(targets, /* list of dest devices */ | |
8292 | target_offsets, /* migration record offsets */ | |
8293 | new_disks, | |
8294 | dest_chunk, | |
8295 | map_dest->raid_level, | |
8296 | dest_layout, | |
8297 | -1, /* source backup file descriptor */ | |
8298 | 0, /* input buf offset | |
8299 | * always 0 buf is already offseted */ | |
8300 | start, | |
8301 | length, | |
8302 | buf) != 0) { | |
8303 | fprintf(stderr, Name ": Error restoring stripes\n"); | |
8304 | goto abort; | |
8305 | } | |
8306 | ||
8307 | rv = 0; | |
8308 | ||
8309 | abort: | |
8310 | if (targets) { | |
8311 | close_targets(targets, new_disks); | |
8312 | free(targets); | |
8313 | } | |
8314 | free(target_offsets); | |
8315 | ||
8316 | return rv; | |
8317 | } | |
8318 | ||
8319 | /******************************************************************************* | |
8320 | * Function: save_checkpoint_imsm | |
8321 | * Description: Function called for current unit status update | |
8322 | * in the migration record. It writes it to disk. | |
8323 | * Parameters: | |
8324 | * super : imsm internal array info | |
8325 | * info : general array info | |
8326 | * Returns: | |
8327 | * 0: success | |
8328 | * 1: failure | |
8329 | * 2: failure, means no valid migration record | |
8330 | * / no general migration in progress / | |
8331 | ******************************************************************************/ | |
8332 | int save_checkpoint_imsm(struct supertype *st, struct mdinfo *info, int state) | |
8333 | { | |
8334 | struct intel_super *super = st->sb; | |
8335 | unsigned long long blocks_per_unit; | |
8336 | unsigned long long curr_migr_unit; | |
8337 | ||
8338 | if (load_imsm_migr_rec(super, info) != 0) { | |
8339 | dprintf("imsm: ERROR: Cannot read migration record " | |
8340 | "for checkpoint save.\n"); | |
8341 | return 1; | |
8342 | } | |
8343 | ||
8344 | blocks_per_unit = __le32_to_cpu(super->migr_rec->blocks_per_unit); | |
8345 | if (blocks_per_unit == 0) { | |
8346 | dprintf("imsm: no migration in progress.\n"); | |
8347 | return 2; | |
8348 | } | |
8349 | curr_migr_unit = info->reshape_progress / blocks_per_unit; | |
8350 | /* check if array is alligned to copy area | |
8351 | * if it is not alligned, add one to current migration unit value | |
8352 | * this can happend on array reshape finish only | |
8353 | */ | |
8354 | if (info->reshape_progress % blocks_per_unit) | |
8355 | curr_migr_unit++; | |
8356 | ||
8357 | super->migr_rec->curr_migr_unit = | |
8358 | __cpu_to_le32(curr_migr_unit); | |
8359 | super->migr_rec->rec_status = __cpu_to_le32(state); | |
8360 | super->migr_rec->dest_1st_member_lba = | |
8361 | __cpu_to_le32(curr_migr_unit * | |
8362 | __le32_to_cpu(super->migr_rec->dest_depth_per_unit)); | |
8363 | if (write_imsm_migr_rec(st) < 0) { | |
8364 | dprintf("imsm: Cannot write migration record " | |
8365 | "outside backup area\n"); | |
8366 | return 1; | |
8367 | } | |
8368 | ||
8369 | return 0; | |
8370 | } | |
8371 | ||
8372 | /******************************************************************************* | |
8373 | * Function: recover_backup_imsm | |
8374 | * Description: Function recovers critical data from the Migration Copy Area | |
8375 | * while assembling an array. | |
8376 | * Parameters: | |
8377 | * super : imsm internal array info | |
8378 | * info : general array info | |
8379 | * Returns: | |
8380 | * 0 : success (or there is no data to recover) | |
8381 | * 1 : fail | |
8382 | ******************************************************************************/ | |
8383 | int recover_backup_imsm(struct supertype *st, struct mdinfo *info) | |
8384 | { | |
8385 | struct intel_super *super = st->sb; | |
8386 | struct migr_record *migr_rec = super->migr_rec; | |
8387 | struct imsm_map *map_dest = NULL; | |
8388 | struct intel_dev *id = NULL; | |
8389 | unsigned long long read_offset; | |
8390 | unsigned long long write_offset; | |
8391 | unsigned unit_len; | |
8392 | int *targets = NULL; | |
8393 | int new_disks, i, err; | |
8394 | char *buf = NULL; | |
8395 | int retval = 1; | |
8396 | unsigned long curr_migr_unit = __le32_to_cpu(migr_rec->curr_migr_unit); | |
8397 | unsigned long num_migr_units = __le32_to_cpu(migr_rec->num_migr_units); | |
8398 | char buffer[20]; | |
8399 | int skipped_disks = 0; | |
8400 | ||
8401 | err = sysfs_get_str(info, NULL, "array_state", (char *)buffer, 20); | |
8402 | if (err < 1) | |
8403 | return 1; | |
8404 | ||
8405 | /* recover data only during assemblation */ | |
8406 | if (strncmp(buffer, "inactive", 8) != 0) | |
8407 | return 0; | |
8408 | /* no data to recover */ | |
8409 | if (__le32_to_cpu(migr_rec->rec_status) == UNIT_SRC_NORMAL) | |
8410 | return 0; | |
8411 | if (curr_migr_unit >= num_migr_units) | |
8412 | return 1; | |
8413 | ||
8414 | /* find device during reshape */ | |
8415 | for (id = super->devlist; id; id = id->next) | |
8416 | if (is_gen_migration(id->dev)) | |
8417 | break; | |
8418 | if (id == NULL) | |
8419 | return 1; | |
8420 | ||
8421 | map_dest = get_imsm_map(id->dev, 0); | |
8422 | new_disks = map_dest->num_members; | |
8423 | ||
8424 | read_offset = (unsigned long long) | |
8425 | __le32_to_cpu(migr_rec->ckpt_area_pba) * 512; | |
8426 | ||
8427 | write_offset = ((unsigned long long) | |
8428 | __le32_to_cpu(migr_rec->dest_1st_member_lba) + | |
8429 | __le32_to_cpu(map_dest->pba_of_lba0)) * 512; | |
8430 | ||
8431 | unit_len = __le32_to_cpu(migr_rec->dest_depth_per_unit) * 512; | |
8432 | if (posix_memalign((void **)&buf, 512, unit_len) != 0) | |
8433 | goto abort; | |
8434 | targets = malloc(new_disks * sizeof(int)); | |
8435 | if (!targets) | |
8436 | goto abort; | |
8437 | ||
8438 | if (open_backup_targets(info, new_disks, targets, super, id->dev)) { | |
8439 | fprintf(stderr, | |
8440 | Name ": Cannot open some devices belonging to array.\n"); | |
8441 | goto abort; | |
8442 | } | |
8443 | ||
8444 | for (i = 0; i < new_disks; i++) { | |
8445 | if (targets[i] < 0) { | |
8446 | skipped_disks++; | |
8447 | continue; | |
8448 | } | |
8449 | if (lseek64(targets[i], read_offset, SEEK_SET) < 0) { | |
8450 | fprintf(stderr, | |
8451 | Name ": Cannot seek to block: %s\n", | |
8452 | strerror(errno)); | |
8453 | skipped_disks++; | |
8454 | continue; | |
8455 | } | |
8456 | if ((unsigned)read(targets[i], buf, unit_len) != unit_len) { | |
8457 | fprintf(stderr, | |
8458 | Name ": Cannot read copy area block: %s\n", | |
8459 | strerror(errno)); | |
8460 | skipped_disks++; | |
8461 | continue; | |
8462 | } | |
8463 | if (lseek64(targets[i], write_offset, SEEK_SET) < 0) { | |
8464 | fprintf(stderr, | |
8465 | Name ": Cannot seek to block: %s\n", | |
8466 | strerror(errno)); | |
8467 | skipped_disks++; | |
8468 | continue; | |
8469 | } | |
8470 | if ((unsigned)write(targets[i], buf, unit_len) != unit_len) { | |
8471 | fprintf(stderr, | |
8472 | Name ": Cannot restore block: %s\n", | |
8473 | strerror(errno)); | |
8474 | skipped_disks++; | |
8475 | continue; | |
8476 | } | |
8477 | } | |
8478 | ||
8479 | if (skipped_disks > imsm_get_allowed_degradation(info->new_level, | |
8480 | new_disks, | |
8481 | super, | |
8482 | id->dev)) { | |
8483 | fprintf(stderr, | |
8484 | Name ": Cannot restore data from backup." | |
8485 | " Too many failed disks\n"); | |
8486 | goto abort; | |
8487 | } | |
8488 | ||
8489 | if (save_checkpoint_imsm(st, info, UNIT_SRC_NORMAL)) { | |
8490 | /* ignore error == 2, this can mean end of reshape here | |
8491 | */ | |
8492 | dprintf("imsm: Cannot write checkpoint to " | |
8493 | "migration record (UNIT_SRC_NORMAL) during restart\n"); | |
8494 | } else | |
8495 | retval = 0; | |
8496 | ||
8497 | abort: | |
8498 | if (targets) { | |
8499 | for (i = 0; i < new_disks; i++) | |
8500 | if (targets[i]) | |
8501 | close(targets[i]); | |
8502 | free(targets); | |
8503 | } | |
8504 | free(buf); | |
8505 | return retval; | |
8506 | } | |
8507 | ||
8508 | static char disk_by_path[] = "/dev/disk/by-path/"; | |
8509 | ||
8510 | static const char *imsm_get_disk_controller_domain(const char *path) | |
8511 | { | |
8512 | char disk_path[PATH_MAX]; | |
8513 | char *drv=NULL; | |
8514 | struct stat st; | |
8515 | ||
8516 | strncpy(disk_path, disk_by_path, PATH_MAX - 1); | |
8517 | strncat(disk_path, path, PATH_MAX - strlen(disk_path) - 1); | |
8518 | if (stat(disk_path, &st) == 0) { | |
8519 | struct sys_dev* hba; | |
8520 | char *path=NULL; | |
8521 | ||
8522 | path = devt_to_devpath(st.st_rdev); | |
8523 | if (path == NULL) | |
8524 | return "unknown"; | |
8525 | hba = find_disk_attached_hba(-1, path); | |
8526 | if (hba && hba->type == SYS_DEV_SAS) | |
8527 | drv = "isci"; | |
8528 | else if (hba && hba->type == SYS_DEV_SATA) | |
8529 | drv = "ahci"; | |
8530 | else | |
8531 | drv = "unknown"; | |
8532 | dprintf("path: %s hba: %s attached: %s\n", | |
8533 | path, (hba) ? hba->path : "NULL", drv); | |
8534 | free(path); | |
8535 | if (hba) | |
8536 | free_sys_dev(&hba); | |
8537 | } | |
8538 | return drv; | |
8539 | } | |
8540 | ||
8541 | static int imsm_find_array_minor_by_subdev(int subdev, int container, int *minor) | |
8542 | { | |
8543 | char subdev_name[20]; | |
8544 | struct mdstat_ent *mdstat; | |
8545 | ||
8546 | sprintf(subdev_name, "%d", subdev); | |
8547 | mdstat = mdstat_by_subdev(subdev_name, container); | |
8548 | if (!mdstat) | |
8549 | return -1; | |
8550 | ||
8551 | *minor = mdstat->devnum; | |
8552 | free_mdstat(mdstat); | |
8553 | return 0; | |
8554 | } | |
8555 | ||
8556 | static int imsm_reshape_is_allowed_on_container(struct supertype *st, | |
8557 | struct geo_params *geo, | |
8558 | int *old_raid_disks) | |
8559 | { | |
8560 | /* currently we only support increasing the number of devices | |
8561 | * for a container. This increases the number of device for each | |
8562 | * member array. They must all be RAID0 or RAID5. | |
8563 | */ | |
8564 | int ret_val = 0; | |
8565 | struct mdinfo *info, *member; | |
8566 | int devices_that_can_grow = 0; | |
8567 | ||
8568 | dprintf("imsm: imsm_reshape_is_allowed_on_container(ENTER): " | |
8569 | "st->devnum = (%i)\n", | |
8570 | st->devnum); | |
8571 | ||
8572 | if (geo->size != -1 || | |
8573 | geo->level != UnSet || | |
8574 | geo->layout != UnSet || | |
8575 | geo->chunksize != 0 || | |
8576 | geo->raid_disks == UnSet) { | |
8577 | dprintf("imsm: Container operation is allowed for " | |
8578 | "raid disks number change only.\n"); | |
8579 | return ret_val; | |
8580 | } | |
8581 | ||
8582 | info = container_content_imsm(st, NULL); | |
8583 | for (member = info; member; member = member->next) { | |
8584 | int result; | |
8585 | int minor; | |
8586 | ||
8587 | dprintf("imsm: checking device_num: %i\n", | |
8588 | member->container_member); | |
8589 | ||
8590 | if (geo->raid_disks <= member->array.raid_disks) { | |
8591 | /* we work on container for Online Capacity Expansion | |
8592 | * only so raid_disks has to grow | |
8593 | */ | |
8594 | dprintf("imsm: for container operation raid disks " | |
8595 | "increase is required\n"); | |
8596 | break; | |
8597 | } | |
8598 | ||
8599 | if ((info->array.level != 0) && | |
8600 | (info->array.level != 5)) { | |
8601 | /* we cannot use this container with other raid level | |
8602 | */ | |
8603 | dprintf("imsm: for container operation wrong" | |
8604 | " raid level (%i) detected\n", | |
8605 | info->array.level); | |
8606 | break; | |
8607 | } else { | |
8608 | /* check for platform support | |
8609 | * for this raid level configuration | |
8610 | */ | |
8611 | struct intel_super *super = st->sb; | |
8612 | if (!is_raid_level_supported(super->orom, | |
8613 | member->array.level, | |
8614 | geo->raid_disks)) { | |
8615 | dprintf("platform does not support raid%d with" | |
8616 | " %d disk%s\n", | |
8617 | info->array.level, | |
8618 | geo->raid_disks, | |
8619 | geo->raid_disks > 1 ? "s" : ""); | |
8620 | break; | |
8621 | } | |
8622 | /* check if component size is aligned to chunk size | |
8623 | */ | |
8624 | if (info->component_size % | |
8625 | (info->array.chunk_size/512)) { | |
8626 | dprintf("Component size is not aligned to " | |
8627 | "chunk size\n"); | |
8628 | break; | |
8629 | } | |
8630 | } | |
8631 | ||
8632 | if (*old_raid_disks && | |
8633 | info->array.raid_disks != *old_raid_disks) | |
8634 | break; | |
8635 | *old_raid_disks = info->array.raid_disks; | |
8636 | ||
8637 | /* All raid5 and raid0 volumes in container | |
8638 | * have to be ready for Online Capacity Expansion | |
8639 | * so they need to be assembled. We have already | |
8640 | * checked that no recovery etc is happening. | |
8641 | */ | |
8642 | result = imsm_find_array_minor_by_subdev(member->container_member, | |
8643 | st->container_dev, | |
8644 | &minor); | |
8645 | if (result < 0) { | |
8646 | dprintf("imsm: cannot find array\n"); | |
8647 | break; | |
8648 | } | |
8649 | devices_that_can_grow++; | |
8650 | } | |
8651 | sysfs_free(info); | |
8652 | if (!member && devices_that_can_grow) | |
8653 | ret_val = 1; | |
8654 | ||
8655 | if (ret_val) | |
8656 | dprintf("\tContainer operation allowed\n"); | |
8657 | else | |
8658 | dprintf("\tError: %i\n", ret_val); | |
8659 | ||
8660 | return ret_val; | |
8661 | } | |
8662 | ||
8663 | /* Function: get_spares_for_grow | |
8664 | * Description: Allocates memory and creates list of spare devices | |
8665 | * avaliable in container. Checks if spare drive size is acceptable. | |
8666 | * Parameters: Pointer to the supertype structure | |
8667 | * Returns: Pointer to the list of spare devices (mdinfo structure) on success, | |
8668 | * NULL if fail | |
8669 | */ | |
8670 | static struct mdinfo *get_spares_for_grow(struct supertype *st) | |
8671 | { | |
8672 | unsigned long long min_size = min_acceptable_spare_size_imsm(st); | |
8673 | return container_choose_spares(st, min_size, NULL, NULL, NULL, 0); | |
8674 | } | |
8675 | ||
8676 | /****************************************************************************** | |
8677 | * function: imsm_create_metadata_update_for_reshape | |
8678 | * Function creates update for whole IMSM container. | |
8679 | * | |
8680 | ******************************************************************************/ | |
8681 | static int imsm_create_metadata_update_for_reshape( | |
8682 | struct supertype *st, | |
8683 | struct geo_params *geo, | |
8684 | int old_raid_disks, | |
8685 | struct imsm_update_reshape **updatep) | |
8686 | { | |
8687 | struct intel_super *super = st->sb; | |
8688 | struct imsm_super *mpb = super->anchor; | |
8689 | int update_memory_size = 0; | |
8690 | struct imsm_update_reshape *u = NULL; | |
8691 | struct mdinfo *spares = NULL; | |
8692 | int i; | |
8693 | int delta_disks = 0; | |
8694 | struct mdinfo *dev; | |
8695 | ||
8696 | dprintf("imsm_update_metadata_for_reshape(enter) raid_disks = %i\n", | |
8697 | geo->raid_disks); | |
8698 | ||
8699 | delta_disks = geo->raid_disks - old_raid_disks; | |
8700 | ||
8701 | /* size of all update data without anchor */ | |
8702 | update_memory_size = sizeof(struct imsm_update_reshape); | |
8703 | ||
8704 | /* now add space for spare disks that we need to add. */ | |
8705 | update_memory_size += sizeof(u->new_disks[0]) * (delta_disks - 1); | |
8706 | ||
8707 | u = calloc(1, update_memory_size); | |
8708 | if (u == NULL) { | |
8709 | dprintf("error: " | |
8710 | "cannot get memory for imsm_update_reshape update\n"); | |
8711 | return 0; | |
8712 | } | |
8713 | u->type = update_reshape_container_disks; | |
8714 | u->old_raid_disks = old_raid_disks; | |
8715 | u->new_raid_disks = geo->raid_disks; | |
8716 | ||
8717 | /* now get spare disks list | |
8718 | */ | |
8719 | spares = get_spares_for_grow(st); | |
8720 | ||
8721 | if (spares == NULL | |
8722 | || delta_disks > spares->array.spare_disks) { | |
8723 | fprintf(stderr, Name ": imsm: ERROR: Cannot get spare devices " | |
8724 | "for %s.\n", geo->dev_name); | |
8725 | i = -1; | |
8726 | goto abort; | |
8727 | } | |
8728 | ||
8729 | /* we have got spares | |
8730 | * update disk list in imsm_disk list table in anchor | |
8731 | */ | |
8732 | dprintf("imsm: %i spares are available.\n\n", | |
8733 | spares->array.spare_disks); | |
8734 | ||
8735 | dev = spares->devs; | |
8736 | for (i = 0; i < delta_disks; i++) { | |
8737 | struct dl *dl; | |
8738 | ||
8739 | if (dev == NULL) | |
8740 | break; | |
8741 | u->new_disks[i] = makedev(dev->disk.major, | |
8742 | dev->disk.minor); | |
8743 | dl = get_disk_super(super, dev->disk.major, dev->disk.minor); | |
8744 | dl->index = mpb->num_disks; | |
8745 | mpb->num_disks++; | |
8746 | dev = dev->next; | |
8747 | } | |
8748 | ||
8749 | abort: | |
8750 | /* free spares | |
8751 | */ | |
8752 | sysfs_free(spares); | |
8753 | ||
8754 | dprintf("imsm: reshape update preparation :"); | |
8755 | if (i == delta_disks) { | |
8756 | dprintf(" OK\n"); | |
8757 | *updatep = u; | |
8758 | return update_memory_size; | |
8759 | } | |
8760 | free(u); | |
8761 | dprintf(" Error\n"); | |
8762 | ||
8763 | return 0; | |
8764 | } | |
8765 | ||
8766 | /****************************************************************************** | |
8767 | * function: imsm_create_metadata_update_for_migration() | |
8768 | * Creates update for IMSM array. | |
8769 | * | |
8770 | ******************************************************************************/ | |
8771 | static int imsm_create_metadata_update_for_migration( | |
8772 | struct supertype *st, | |
8773 | struct geo_params *geo, | |
8774 | struct imsm_update_reshape_migration **updatep) | |
8775 | { | |
8776 | struct intel_super *super = st->sb; | |
8777 | int update_memory_size = 0; | |
8778 | struct imsm_update_reshape_migration *u = NULL; | |
8779 | struct imsm_dev *dev; | |
8780 | int previous_level = -1; | |
8781 | ||
8782 | dprintf("imsm_create_metadata_update_for_migration(enter)" | |
8783 | " New Level = %i\n", geo->level); | |
8784 | ||
8785 | /* size of all update data without anchor */ | |
8786 | update_memory_size = sizeof(struct imsm_update_reshape_migration); | |
8787 | ||
8788 | u = calloc(1, update_memory_size); | |
8789 | if (u == NULL) { | |
8790 | dprintf("error: cannot get memory for " | |
8791 | "imsm_create_metadata_update_for_migration\n"); | |
8792 | return 0; | |
8793 | } | |
8794 | u->type = update_reshape_migration; | |
8795 | u->subdev = super->current_vol; | |
8796 | u->new_level = geo->level; | |
8797 | u->new_layout = geo->layout; | |
8798 | u->new_raid_disks = u->old_raid_disks = geo->raid_disks; | |
8799 | u->new_disks[0] = -1; | |
8800 | u->new_chunksize = -1; | |
8801 | ||
8802 | dev = get_imsm_dev(super, u->subdev); | |
8803 | if (dev) { | |
8804 | struct imsm_map *map; | |
8805 | ||
8806 | map = get_imsm_map(dev, 0); | |
8807 | if (map) { | |
8808 | int current_chunk_size = | |
8809 | __le16_to_cpu(map->blocks_per_strip) / 2; | |
8810 | ||
8811 | if (geo->chunksize != current_chunk_size) { | |
8812 | u->new_chunksize = geo->chunksize / 1024; | |
8813 | dprintf("imsm: " | |
8814 | "chunk size change from %i to %i\n", | |
8815 | current_chunk_size, u->new_chunksize); | |
8816 | } | |
8817 | previous_level = map->raid_level; | |
8818 | } | |
8819 | } | |
8820 | if ((geo->level == 5) && (previous_level == 0)) { | |
8821 | struct mdinfo *spares = NULL; | |
8822 | ||
8823 | u->new_raid_disks++; | |
8824 | spares = get_spares_for_grow(st); | |
8825 | if ((spares == NULL) || (spares->array.spare_disks < 1)) { | |
8826 | free(u); | |
8827 | sysfs_free(spares); | |
8828 | update_memory_size = 0; | |
8829 | dprintf("error: cannot get spare device " | |
8830 | "for requested migration"); | |
8831 | return 0; | |
8832 | } | |
8833 | sysfs_free(spares); | |
8834 | } | |
8835 | dprintf("imsm: reshape update preparation : OK\n"); | |
8836 | *updatep = u; | |
8837 | ||
8838 | return update_memory_size; | |
8839 | } | |
8840 | ||
8841 | static void imsm_update_metadata_locally(struct supertype *st, | |
8842 | void *buf, int len) | |
8843 | { | |
8844 | struct metadata_update mu; | |
8845 | ||
8846 | mu.buf = buf; | |
8847 | mu.len = len; | |
8848 | mu.space = NULL; | |
8849 | mu.space_list = NULL; | |
8850 | mu.next = NULL; | |
8851 | imsm_prepare_update(st, &mu); | |
8852 | imsm_process_update(st, &mu); | |
8853 | ||
8854 | while (mu.space_list) { | |
8855 | void **space = mu.space_list; | |
8856 | mu.space_list = *space; | |
8857 | free(space); | |
8858 | } | |
8859 | } | |
8860 | ||
8861 | /*************************************************************************** | |
8862 | * Function: imsm_analyze_change | |
8863 | * Description: Function analyze change for single volume | |
8864 | * and validate if transition is supported | |
8865 | * Parameters: Geometry parameters, supertype structure | |
8866 | * Returns: Operation type code on success, -1 if fail | |
8867 | ****************************************************************************/ | |
8868 | enum imsm_reshape_type imsm_analyze_change(struct supertype *st, | |
8869 | struct geo_params *geo) | |
8870 | { | |
8871 | struct mdinfo info; | |
8872 | int change = -1; | |
8873 | int check_devs = 0; | |
8874 | int chunk; | |
8875 | int devNumChange=0; | |
8876 | int layout = -1; | |
8877 | ||
8878 | getinfo_super_imsm_volume(st, &info, NULL); | |
8879 | if ((geo->level != info.array.level) && | |
8880 | (geo->level >= 0) && | |
8881 | (geo->level != UnSet)) { | |
8882 | switch (info.array.level) { | |
8883 | case 0: | |
8884 | if (geo->level == 5) { | |
8885 | change = CH_MIGRATION; | |
8886 | if (geo->layout != ALGORITHM_LEFT_ASYMMETRIC) { | |
8887 | fprintf(stderr, | |
8888 | Name " Error. Requested Layout " | |
8889 | "not supported (left-asymmetric layout " | |
8890 | "is supported only)!\n"); | |
8891 | change = -1; | |
8892 | goto analyse_change_exit; | |
8893 | } | |
8894 | layout = geo->layout; | |
8895 | check_devs = 1; | |
8896 | devNumChange = 1; /* parity disk added */ | |
8897 | } else if (geo->level == 10) { | |
8898 | change = CH_TAKEOVER; | |
8899 | check_devs = 1; | |
8900 | devNumChange = 2; /* two mirrors added */ | |
8901 | layout = 0x102; /* imsm supported layout */ | |
8902 | } | |
8903 | break; | |
8904 | case 1: | |
8905 | case 10: | |
8906 | if (geo->level == 0) { | |
8907 | change = CH_TAKEOVER; | |
8908 | check_devs = 1; | |
8909 | devNumChange = -(geo->raid_disks/2); | |
8910 | layout = 0; /* imsm raid0 layout */ | |
8911 | } | |
8912 | break; | |
8913 | } | |
8914 | if (change == -1) { | |
8915 | fprintf(stderr, | |
8916 | Name " Error. Level Migration from %d to %d " | |
8917 | "not supported!\n", | |
8918 | info.array.level, geo->level); | |
8919 | goto analyse_change_exit; | |
8920 | } | |
8921 | } else | |
8922 | geo->level = info.array.level; | |
8923 | ||
8924 | if ((geo->layout != info.array.layout) | |
8925 | && ((geo->layout != UnSet) && (geo->layout != -1))) { | |
8926 | change = CH_MIGRATION; | |
8927 | if ((info.array.layout == 0) | |
8928 | && (info.array.level == 5) | |
8929 | && (geo->layout == 5)) { | |
8930 | /* reshape 5 -> 4 */ | |
8931 | } else if ((info.array.layout == 5) | |
8932 | && (info.array.level == 5) | |
8933 | && (geo->layout == 0)) { | |
8934 | /* reshape 4 -> 5 */ | |
8935 | geo->layout = 0; | |
8936 | geo->level = 5; | |
8937 | } else { | |
8938 | fprintf(stderr, | |
8939 | Name " Error. Layout Migration from %d to %d " | |
8940 | "not supported!\n", | |
8941 | info.array.layout, geo->layout); | |
8942 | change = -1; | |
8943 | goto analyse_change_exit; | |
8944 | } | |
8945 | } else | |
8946 | geo->layout = info.array.layout; | |
8947 | ||
8948 | if ((geo->chunksize > 0) && (geo->chunksize != UnSet) | |
8949 | && (geo->chunksize != info.array.chunk_size)) | |
8950 | change = CH_MIGRATION; | |
8951 | else | |
8952 | geo->chunksize = info.array.chunk_size; | |
8953 | ||
8954 | chunk = geo->chunksize / 1024; | |
8955 | if (!validate_geometry_imsm(st, | |
8956 | geo->level, | |
8957 | layout, | |
8958 | geo->raid_disks + devNumChange, | |
8959 | &chunk, | |
8960 | geo->size, | |
8961 | 0, 0, 1)) | |
8962 | change = -1; | |
8963 | ||
8964 | if (check_devs) { | |
8965 | struct intel_super *super = st->sb; | |
8966 | struct imsm_super *mpb = super->anchor; | |
8967 | ||
8968 | if (mpb->num_raid_devs > 1) { | |
8969 | fprintf(stderr, | |
8970 | Name " Error. Cannot perform operation on %s" | |
8971 | "- for this operation it MUST be single " | |
8972 | "array in container\n", | |
8973 | geo->dev_name); | |
8974 | change = -1; | |
8975 | } | |
8976 | } | |
8977 | ||
8978 | analyse_change_exit: | |
8979 | ||
8980 | return change; | |
8981 | } | |
8982 | ||
8983 | int imsm_takeover(struct supertype *st, struct geo_params *geo) | |
8984 | { | |
8985 | struct intel_super *super = st->sb; | |
8986 | struct imsm_update_takeover *u; | |
8987 | ||
8988 | u = malloc(sizeof(struct imsm_update_takeover)); | |
8989 | if (u == NULL) | |
8990 | return 1; | |
8991 | ||
8992 | u->type = update_takeover; | |
8993 | u->subarray = super->current_vol; | |
8994 | ||
8995 | /* 10->0 transition */ | |
8996 | if (geo->level == 0) | |
8997 | u->direction = R10_TO_R0; | |
8998 | ||
8999 | /* 0->10 transition */ | |
9000 | if (geo->level == 10) | |
9001 | u->direction = R0_TO_R10; | |
9002 | ||
9003 | /* update metadata locally */ | |
9004 | imsm_update_metadata_locally(st, u, | |
9005 | sizeof(struct imsm_update_takeover)); | |
9006 | /* and possibly remotely */ | |
9007 | if (st->update_tail) | |
9008 | append_metadata_update(st, u, | |
9009 | sizeof(struct imsm_update_takeover)); | |
9010 | else | |
9011 | free(u); | |
9012 | ||
9013 | return 0; | |
9014 | } | |
9015 | ||
9016 | static int imsm_reshape_super(struct supertype *st, long long size, int level, | |
9017 | int layout, int chunksize, int raid_disks, | |
9018 | int delta_disks, char *backup, char *dev, | |
9019 | int verbose) | |
9020 | { | |
9021 | int ret_val = 1; | |
9022 | struct geo_params geo; | |
9023 | ||
9024 | dprintf("imsm: reshape_super called.\n"); | |
9025 | ||
9026 | memset(&geo, 0, sizeof(struct geo_params)); | |
9027 | ||
9028 | geo.dev_name = dev; | |
9029 | geo.dev_id = st->devnum; | |
9030 | geo.size = size; | |
9031 | geo.level = level; | |
9032 | geo.layout = layout; | |
9033 | geo.chunksize = chunksize; | |
9034 | geo.raid_disks = raid_disks; | |
9035 | if (delta_disks != UnSet) | |
9036 | geo.raid_disks += delta_disks; | |
9037 | ||
9038 | dprintf("\tfor level : %i\n", geo.level); | |
9039 | dprintf("\tfor raid_disks : %i\n", geo.raid_disks); | |
9040 | ||
9041 | if (experimental() == 0) | |
9042 | return ret_val; | |
9043 | ||
9044 | if (st->container_dev == st->devnum) { | |
9045 | /* On container level we can only increase number of devices. */ | |
9046 | dprintf("imsm: info: Container operation\n"); | |
9047 | int old_raid_disks = 0; | |
9048 | ||
9049 | if (imsm_reshape_is_allowed_on_container( | |
9050 | st, &geo, &old_raid_disks)) { | |
9051 | struct imsm_update_reshape *u = NULL; | |
9052 | int len; | |
9053 | ||
9054 | len = imsm_create_metadata_update_for_reshape( | |
9055 | st, &geo, old_raid_disks, &u); | |
9056 | ||
9057 | if (len <= 0) { | |
9058 | dprintf("imsm: Cannot prepare update\n"); | |
9059 | goto exit_imsm_reshape_super; | |
9060 | } | |
9061 | ||
9062 | ret_val = 0; | |
9063 | /* update metadata locally */ | |
9064 | imsm_update_metadata_locally(st, u, len); | |
9065 | /* and possibly remotely */ | |
9066 | if (st->update_tail) | |
9067 | append_metadata_update(st, u, len); | |
9068 | else | |
9069 | free(u); | |
9070 | ||
9071 | } else { | |
9072 | fprintf(stderr, Name ": (imsm) Operation " | |
9073 | "is not allowed on this container\n"); | |
9074 | } | |
9075 | } else { | |
9076 | /* On volume level we support following operations | |
9077 | * - takeover: raid10 -> raid0; raid0 -> raid10 | |
9078 | * - chunk size migration | |
9079 | * - migration: raid5 -> raid0; raid0 -> raid5 | |
9080 | */ | |
9081 | struct intel_super *super = st->sb; | |
9082 | struct intel_dev *dev = super->devlist; | |
9083 | int change, devnum; | |
9084 | dprintf("imsm: info: Volume operation\n"); | |
9085 | /* find requested device */ | |
9086 | while (dev) { | |
9087 | if (imsm_find_array_minor_by_subdev( | |
9088 | dev->index, st->container_dev, &devnum) == 0 | |
9089 | && devnum == geo.dev_id) | |
9090 | break; | |
9091 | dev = dev->next; | |
9092 | } | |
9093 | if (dev == NULL) { | |
9094 | fprintf(stderr, Name " Cannot find %s (%i) subarray\n", | |
9095 | geo.dev_name, geo.dev_id); | |
9096 | goto exit_imsm_reshape_super; | |
9097 | } | |
9098 | super->current_vol = dev->index; | |
9099 | change = imsm_analyze_change(st, &geo); | |
9100 | switch (change) { | |
9101 | case CH_TAKEOVER: | |
9102 | ret_val = imsm_takeover(st, &geo); | |
9103 | break; | |
9104 | case CH_MIGRATION: { | |
9105 | struct imsm_update_reshape_migration *u = NULL; | |
9106 | int len = | |
9107 | imsm_create_metadata_update_for_migration( | |
9108 | st, &geo, &u); | |
9109 | if (len < 1) { | |
9110 | dprintf("imsm: " | |
9111 | "Cannot prepare update\n"); | |
9112 | break; | |
9113 | } | |
9114 | ret_val = 0; | |
9115 | /* update metadata locally */ | |
9116 | imsm_update_metadata_locally(st, u, len); | |
9117 | /* and possibly remotely */ | |
9118 | if (st->update_tail) | |
9119 | append_metadata_update(st, u, len); | |
9120 | else | |
9121 | free(u); | |
9122 | } | |
9123 | break; | |
9124 | default: | |
9125 | ret_val = 1; | |
9126 | } | |
9127 | } | |
9128 | ||
9129 | exit_imsm_reshape_super: | |
9130 | dprintf("imsm: reshape_super Exit code = %i\n", ret_val); | |
9131 | return ret_val; | |
9132 | } | |
9133 | ||
9134 | /******************************************************************************* | |
9135 | * Function: wait_for_reshape_imsm | |
9136 | * Description: Function writes new sync_max value and waits until | |
9137 | * reshape process reach new position | |
9138 | * Parameters: | |
9139 | * sra : general array info | |
9140 | * ndata : number of disks in new array's layout | |
9141 | * Returns: | |
9142 | * 0 : success, | |
9143 | * 1 : there is no reshape in progress, | |
9144 | * -1 : fail | |
9145 | ******************************************************************************/ | |
9146 | int wait_for_reshape_imsm(struct mdinfo *sra, int ndata) | |
9147 | { | |
9148 | int fd = sysfs_get_fd(sra, NULL, "reshape_position"); | |
9149 | unsigned long long completed; | |
9150 | /* to_complete : new sync_max position */ | |
9151 | unsigned long long to_complete = sra->reshape_progress; | |
9152 | unsigned long long position_to_set = to_complete / ndata; | |
9153 | ||
9154 | if (fd < 0) { | |
9155 | dprintf("imsm: wait_for_reshape_imsm() " | |
9156 | "cannot open reshape_position\n"); | |
9157 | return 1; | |
9158 | } | |
9159 | ||
9160 | if (sysfs_fd_get_ll(fd, &completed) < 0) { | |
9161 | dprintf("imsm: wait_for_reshape_imsm() " | |
9162 | "cannot read reshape_position (no reshape in progres)\n"); | |
9163 | close(fd); | |
9164 | return 0; | |
9165 | } | |
9166 | ||
9167 | if (completed > to_complete) { | |
9168 | dprintf("imsm: wait_for_reshape_imsm() " | |
9169 | "wrong next position to set %llu (%llu)\n", | |
9170 | to_complete, completed); | |
9171 | close(fd); | |
9172 | return -1; | |
9173 | } | |
9174 | dprintf("Position set: %llu\n", position_to_set); | |
9175 | if (sysfs_set_num(sra, NULL, "sync_max", | |
9176 | position_to_set) != 0) { | |
9177 | dprintf("imsm: wait_for_reshape_imsm() " | |
9178 | "cannot set reshape position to %llu\n", | |
9179 | position_to_set); | |
9180 | close(fd); | |
9181 | return -1; | |
9182 | } | |
9183 | ||
9184 | do { | |
9185 | char action[20]; | |
9186 | fd_set rfds; | |
9187 | FD_ZERO(&rfds); | |
9188 | FD_SET(fd, &rfds); | |
9189 | select(fd+1, &rfds, NULL, NULL, NULL); | |
9190 | if (sysfs_get_str(sra, NULL, "sync_action", | |
9191 | action, 20) > 0 && | |
9192 | strncmp(action, "reshape", 7) != 0) | |
9193 | break; | |
9194 | if (sysfs_fd_get_ll(fd, &completed) < 0) { | |
9195 | dprintf("imsm: wait_for_reshape_imsm() " | |
9196 | "cannot read reshape_position (in loop)\n"); | |
9197 | close(fd); | |
9198 | return 1; | |
9199 | } | |
9200 | } while (completed < to_complete); | |
9201 | close(fd); | |
9202 | return 0; | |
9203 | ||
9204 | } | |
9205 | ||
9206 | /******************************************************************************* | |
9207 | * Function: check_degradation_change | |
9208 | * Description: Check that array hasn't become failed. | |
9209 | * Parameters: | |
9210 | * info : for sysfs access | |
9211 | * sources : source disks descriptors | |
9212 | * degraded: previous degradation level | |
9213 | * Returns: | |
9214 | * degradation level | |
9215 | ******************************************************************************/ | |
9216 | int check_degradation_change(struct mdinfo *info, | |
9217 | int *sources, | |
9218 | int degraded) | |
9219 | { | |
9220 | unsigned long long new_degraded; | |
9221 | sysfs_get_ll(info, NULL, "degraded", &new_degraded); | |
9222 | if (new_degraded != (unsigned long long)degraded) { | |
9223 | /* check each device to ensure it is still working */ | |
9224 | struct mdinfo *sd; | |
9225 | new_degraded = 0; | |
9226 | for (sd = info->devs ; sd ; sd = sd->next) { | |
9227 | if (sd->disk.state & (1<<MD_DISK_FAULTY)) | |
9228 | continue; | |
9229 | if (sd->disk.state & (1<<MD_DISK_SYNC)) { | |
9230 | char sbuf[20]; | |
9231 | if (sysfs_get_str(info, | |
9232 | sd, "state", sbuf, 20) < 0 || | |
9233 | strstr(sbuf, "faulty") || | |
9234 | strstr(sbuf, "in_sync") == NULL) { | |
9235 | /* this device is dead */ | |
9236 | sd->disk.state = (1<<MD_DISK_FAULTY); | |
9237 | if (sd->disk.raid_disk >= 0 && | |
9238 | sources[sd->disk.raid_disk] >= 0) { | |
9239 | close(sources[ | |
9240 | sd->disk.raid_disk]); | |
9241 | sources[sd->disk.raid_disk] = | |
9242 | -1; | |
9243 | } | |
9244 | new_degraded++; | |
9245 | } | |
9246 | } | |
9247 | } | |
9248 | } | |
9249 | ||
9250 | return new_degraded; | |
9251 | } | |
9252 | ||
9253 | /******************************************************************************* | |
9254 | * Function: imsm_manage_reshape | |
9255 | * Description: Function finds array under reshape and it manages reshape | |
9256 | * process. It creates stripes backups (if required) and sets | |
9257 | * checheckpoits. | |
9258 | * Parameters: | |
9259 | * afd : Backup handle (nattive) - not used | |
9260 | * sra : general array info | |
9261 | * reshape : reshape parameters - not used | |
9262 | * st : supertype structure | |
9263 | * blocks : size of critical section [blocks] | |
9264 | * fds : table of source device descriptor | |
9265 | * offsets : start of array (offest per devices) | |
9266 | * dests : not used | |
9267 | * destfd : table of destination device descriptor | |
9268 | * destoffsets : table of destination offsets (per device) | |
9269 | * Returns: | |
9270 | * 1 : success, reshape is done | |
9271 | * 0 : fail | |
9272 | ******************************************************************************/ | |
9273 | static int imsm_manage_reshape( | |
9274 | int afd, struct mdinfo *sra, struct reshape *reshape, | |
9275 | struct supertype *st, unsigned long backup_blocks, | |
9276 | int *fds, unsigned long long *offsets, | |
9277 | int dests, int *destfd, unsigned long long *destoffsets) | |
9278 | { | |
9279 | int ret_val = 0; | |
9280 | struct intel_super *super = st->sb; | |
9281 | struct intel_dev *dv = NULL; | |
9282 | struct imsm_dev *dev = NULL; | |
9283 | struct imsm_map *map_src; | |
9284 | int migr_vol_qan = 0; | |
9285 | int ndata, odata; /* [bytes] */ | |
9286 | int chunk; /* [bytes] */ | |
9287 | struct migr_record *migr_rec; | |
9288 | char *buf = NULL; | |
9289 | unsigned int buf_size; /* [bytes] */ | |
9290 | unsigned long long max_position; /* array size [bytes] */ | |
9291 | unsigned long long next_step; /* [blocks]/[bytes] */ | |
9292 | unsigned long long old_data_stripe_length; | |
9293 | unsigned long long start_src; /* [bytes] */ | |
9294 | unsigned long long start; /* [bytes] */ | |
9295 | unsigned long long start_buf_shift; /* [bytes] */ | |
9296 | int degraded = 0; | |
9297 | int source_layout = 0; | |
9298 | ||
9299 | if (!fds || !offsets || !sra) | |
9300 | goto abort; | |
9301 | ||
9302 | /* Find volume during the reshape */ | |
9303 | for (dv = super->devlist; dv; dv = dv->next) { | |
9304 | if (dv->dev->vol.migr_type == MIGR_GEN_MIGR | |
9305 | && dv->dev->vol.migr_state == 1) { | |
9306 | dev = dv->dev; | |
9307 | migr_vol_qan++; | |
9308 | } | |
9309 | } | |
9310 | /* Only one volume can migrate at the same time */ | |
9311 | if (migr_vol_qan != 1) { | |
9312 | fprintf(stderr, Name " : %s", migr_vol_qan ? | |
9313 | "Number of migrating volumes greater than 1\n" : | |
9314 | "There is no volume during migrationg\n"); | |
9315 | goto abort; | |
9316 | } | |
9317 | ||
9318 | map_src = get_imsm_map(dev, 1); | |
9319 | if (map_src == NULL) | |
9320 | goto abort; | |
9321 | ||
9322 | ndata = imsm_num_data_members(dev, 0); | |
9323 | odata = imsm_num_data_members(dev, 1); | |
9324 | ||
9325 | chunk = __le16_to_cpu(map_src->blocks_per_strip) * 512; | |
9326 | old_data_stripe_length = odata * chunk; | |
9327 | ||
9328 | migr_rec = super->migr_rec; | |
9329 | ||
9330 | /* initialize migration record for start condition */ | |
9331 | if (sra->reshape_progress == 0) | |
9332 | init_migr_record_imsm(st, dev, sra); | |
9333 | else { | |
9334 | if (__le32_to_cpu(migr_rec->rec_status) != UNIT_SRC_NORMAL) { | |
9335 | dprintf("imsm: cannot restart migration when data " | |
9336 | "are present in copy area.\n"); | |
9337 | goto abort; | |
9338 | } | |
9339 | } | |
9340 | ||
9341 | /* size for data */ | |
9342 | buf_size = __le32_to_cpu(migr_rec->blocks_per_unit) * 512; | |
9343 | /* extend buffer size for parity disk */ | |
9344 | buf_size += __le32_to_cpu(migr_rec->dest_depth_per_unit) * 512; | |
9345 | /* add space for stripe aligment */ | |
9346 | buf_size += old_data_stripe_length; | |
9347 | if (posix_memalign((void **)&buf, 4096, buf_size)) { | |
9348 | dprintf("imsm: Cannot allocate checpoint buffer\n"); | |
9349 | goto abort; | |
9350 | } | |
9351 | ||
9352 | max_position = sra->component_size * ndata; | |
9353 | source_layout = imsm_level_to_layout(map_src->raid_level); | |
9354 | ||
9355 | while (__le32_to_cpu(migr_rec->curr_migr_unit) < | |
9356 | __le32_to_cpu(migr_rec->num_migr_units)) { | |
9357 | /* current reshape position [blocks] */ | |
9358 | unsigned long long current_position = | |
9359 | __le32_to_cpu(migr_rec->blocks_per_unit) | |
9360 | * __le32_to_cpu(migr_rec->curr_migr_unit); | |
9361 | unsigned long long border; | |
9362 | ||
9363 | /* Check that array hasn't become failed. | |
9364 | */ | |
9365 | degraded = check_degradation_change(sra, fds, degraded); | |
9366 | if (degraded > 1) { | |
9367 | dprintf("imsm: Abort reshape due to degradation" | |
9368 | " level (%i)\n", degraded); | |
9369 | goto abort; | |
9370 | } | |
9371 | ||
9372 | next_step = __le32_to_cpu(migr_rec->blocks_per_unit); | |
9373 | ||
9374 | if ((current_position + next_step) > max_position) | |
9375 | next_step = max_position - current_position; | |
9376 | ||
9377 | start = current_position * 512; | |
9378 | ||
9379 | /* allign reading start to old geometry */ | |
9380 | start_buf_shift = start % old_data_stripe_length; | |
9381 | start_src = start - start_buf_shift; | |
9382 | ||
9383 | border = (start_src / odata) - (start / ndata); | |
9384 | border /= 512; | |
9385 | if (border <= __le32_to_cpu(migr_rec->dest_depth_per_unit)) { | |
9386 | /* save critical stripes to buf | |
9387 | * start - start address of current unit | |
9388 | * to backup [bytes] | |
9389 | * start_src - start address of current unit | |
9390 | * to backup alligned to source array | |
9391 | * [bytes] | |
9392 | */ | |
9393 | unsigned long long next_step_filler = 0; | |
9394 | unsigned long long copy_length = next_step * 512; | |
9395 | ||
9396 | /* allign copy area length to stripe in old geometry */ | |
9397 | next_step_filler = ((copy_length + start_buf_shift) | |
9398 | % old_data_stripe_length); | |
9399 | if (next_step_filler) | |
9400 | next_step_filler = (old_data_stripe_length | |
9401 | - next_step_filler); | |
9402 | dprintf("save_stripes() parameters: start = %llu," | |
9403 | "\tstart_src = %llu,\tnext_step*512 = %llu," | |
9404 | "\tstart_in_buf_shift = %llu," | |
9405 | "\tnext_step_filler = %llu\n", | |
9406 | start, start_src, copy_length, | |
9407 | start_buf_shift, next_step_filler); | |
9408 | ||
9409 | if (save_stripes(fds, offsets, map_src->num_members, | |
9410 | chunk, map_src->raid_level, | |
9411 | source_layout, 0, NULL, start_src, | |
9412 | copy_length + | |
9413 | next_step_filler + start_buf_shift, | |
9414 | buf)) { | |
9415 | dprintf("imsm: Cannot save stripes" | |
9416 | " to buffer\n"); | |
9417 | goto abort; | |
9418 | } | |
9419 | /* Convert data to destination format and store it | |
9420 | * in backup general migration area | |
9421 | */ | |
9422 | if (save_backup_imsm(st, dev, sra, | |
9423 | buf + start_buf_shift, copy_length)) { | |
9424 | dprintf("imsm: Cannot save stripes to " | |
9425 | "target devices\n"); | |
9426 | goto abort; | |
9427 | } | |
9428 | if (save_checkpoint_imsm(st, sra, | |
9429 | UNIT_SRC_IN_CP_AREA)) { | |
9430 | dprintf("imsm: Cannot write checkpoint to " | |
9431 | "migration record (UNIT_SRC_IN_CP_AREA)\n"); | |
9432 | goto abort; | |
9433 | } | |
9434 | } else { | |
9435 | /* set next step to use whole border area */ | |
9436 | border /= next_step; | |
9437 | if (border > 1) | |
9438 | next_step *= border; | |
9439 | } | |
9440 | /* When data backed up, checkpoint stored, | |
9441 | * kick the kernel to reshape unit of data | |
9442 | */ | |
9443 | next_step = next_step + sra->reshape_progress; | |
9444 | /* limit next step to array max position */ | |
9445 | if (next_step > max_position) | |
9446 | next_step = max_position; | |
9447 | sysfs_set_num(sra, NULL, "suspend_lo", sra->reshape_progress); | |
9448 | sysfs_set_num(sra, NULL, "suspend_hi", next_step); | |
9449 | sra->reshape_progress = next_step; | |
9450 | ||
9451 | /* wait until reshape finish */ | |
9452 | if (wait_for_reshape_imsm(sra, ndata) < 0) { | |
9453 | dprintf("wait_for_reshape_imsm returned error!\n"); | |
9454 | goto abort; | |
9455 | } | |
9456 | ||
9457 | if (save_checkpoint_imsm(st, sra, UNIT_SRC_NORMAL) == 1) { | |
9458 | /* ignore error == 2, this can mean end of reshape here | |
9459 | */ | |
9460 | dprintf("imsm: Cannot write checkpoint to " | |
9461 | "migration record (UNIT_SRC_NORMAL)\n"); | |
9462 | goto abort; | |
9463 | } | |
9464 | ||
9465 | } | |
9466 | ||
9467 | /* return '1' if done */ | |
9468 | ret_val = 1; | |
9469 | abort: | |
9470 | free(buf); | |
9471 | abort_reshape(sra); | |
9472 | ||
9473 | return ret_val; | |
9474 | } | |
9475 | #endif /* MDASSEMBLE */ | |
9476 | ||
9477 | struct superswitch super_imsm = { | |
9478 | #ifndef MDASSEMBLE | |
9479 | .examine_super = examine_super_imsm, | |
9480 | .brief_examine_super = brief_examine_super_imsm, | |
9481 | .brief_examine_subarrays = brief_examine_subarrays_imsm, | |
9482 | .export_examine_super = export_examine_super_imsm, | |
9483 | .detail_super = detail_super_imsm, | |
9484 | .brief_detail_super = brief_detail_super_imsm, | |
9485 | .write_init_super = write_init_super_imsm, | |
9486 | .validate_geometry = validate_geometry_imsm, | |
9487 | .add_to_super = add_to_super_imsm, | |
9488 | .remove_from_super = remove_from_super_imsm, | |
9489 | .detail_platform = detail_platform_imsm, | |
9490 | .kill_subarray = kill_subarray_imsm, | |
9491 | .update_subarray = update_subarray_imsm, | |
9492 | .load_container = load_container_imsm, | |
9493 | .default_geometry = default_geometry_imsm, | |
9494 | .get_disk_controller_domain = imsm_get_disk_controller_domain, | |
9495 | .reshape_super = imsm_reshape_super, | |
9496 | .manage_reshape = imsm_manage_reshape, | |
9497 | .recover_backup = recover_backup_imsm, | |
9498 | #endif | |
9499 | .match_home = match_home_imsm, | |
9500 | .uuid_from_super= uuid_from_super_imsm, | |
9501 | .getinfo_super = getinfo_super_imsm, | |
9502 | .getinfo_super_disks = getinfo_super_disks_imsm, | |
9503 | .update_super = update_super_imsm, | |
9504 | ||
9505 | .avail_size = avail_size_imsm, | |
9506 | .min_acceptable_spare_size = min_acceptable_spare_size_imsm, | |
9507 | ||
9508 | .compare_super = compare_super_imsm, | |
9509 | ||
9510 | .load_super = load_super_imsm, | |
9511 | .init_super = init_super_imsm, | |
9512 | .store_super = store_super_imsm, | |
9513 | .free_super = free_super_imsm, | |
9514 | .match_metadata_desc = match_metadata_desc_imsm, | |
9515 | .container_content = container_content_imsm, | |
9516 | ||
9517 | ||
9518 | .external = 1, | |
9519 | .name = "imsm", | |
9520 | ||
9521 | #ifndef MDASSEMBLE | |
9522 | /* for mdmon */ | |
9523 | .open_new = imsm_open_new, | |
9524 | .set_array_state= imsm_set_array_state, | |
9525 | .set_disk = imsm_set_disk, | |
9526 | .sync_metadata = imsm_sync_metadata, | |
9527 | .activate_spare = imsm_activate_spare, | |
9528 | .process_update = imsm_process_update, | |
9529 | .prepare_update = imsm_prepare_update, | |
9530 | #endif /* MDASSEMBLE */ | |
9531 | }; |