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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 0 | |
112 | #define MAP_1 1 | |
113 | #define MAP_X -1 | |
114 | ||
115 | /* RAID map configuration infos. */ | |
116 | struct imsm_map { | |
117 | __u32 pba_of_lba0; /* start address of partition */ | |
118 | __u32 blocks_per_member;/* blocks per member */ | |
119 | __u32 num_data_stripes; /* number of data stripes */ | |
120 | __u16 blocks_per_strip; | |
121 | __u8 map_state; /* Normal, Uninitialized, Degraded, Failed */ | |
122 | #define IMSM_T_STATE_NORMAL 0 | |
123 | #define IMSM_T_STATE_UNINITIALIZED 1 | |
124 | #define IMSM_T_STATE_DEGRADED 2 | |
125 | #define IMSM_T_STATE_FAILED 3 | |
126 | __u8 raid_level; | |
127 | #define IMSM_T_RAID0 0 | |
128 | #define IMSM_T_RAID1 1 | |
129 | #define IMSM_T_RAID5 5 /* since metadata version 1.2.02 ? */ | |
130 | __u8 num_members; /* number of member disks */ | |
131 | __u8 num_domains; /* number of parity domains */ | |
132 | __u8 failed_disk_num; /* valid only when state is degraded */ | |
133 | __u8 ddf; | |
134 | __u32 filler[7]; /* expansion area */ | |
135 | #define IMSM_ORD_REBUILD (1 << 24) | |
136 | __u32 disk_ord_tbl[1]; /* disk_ord_tbl[num_members], | |
137 | * top byte contains some flags | |
138 | */ | |
139 | } __attribute__ ((packed)); | |
140 | ||
141 | struct imsm_vol { | |
142 | __u32 curr_migr_unit; | |
143 | __u32 checkpoint_id; /* id to access curr_migr_unit */ | |
144 | __u8 migr_state; /* Normal or Migrating */ | |
145 | #define MIGR_INIT 0 | |
146 | #define MIGR_REBUILD 1 | |
147 | #define MIGR_VERIFY 2 /* analagous to echo check > sync_action */ | |
148 | #define MIGR_GEN_MIGR 3 | |
149 | #define MIGR_STATE_CHANGE 4 | |
150 | #define MIGR_REPAIR 5 | |
151 | __u8 migr_type; /* Initializing, Rebuilding, ... */ | |
152 | __u8 dirty; | |
153 | __u8 fs_state; /* fast-sync state for CnG (0xff == disabled) */ | |
154 | __u16 verify_errors; /* number of mismatches */ | |
155 | __u16 bad_blocks; /* number of bad blocks during verify */ | |
156 | __u32 filler[4]; | |
157 | struct imsm_map map[1]; | |
158 | /* here comes another one if migr_state */ | |
159 | } __attribute__ ((packed)); | |
160 | ||
161 | struct imsm_dev { | |
162 | __u8 volume[MAX_RAID_SERIAL_LEN]; | |
163 | __u32 size_low; | |
164 | __u32 size_high; | |
165 | #define DEV_BOOTABLE __cpu_to_le32(0x01) | |
166 | #define DEV_BOOT_DEVICE __cpu_to_le32(0x02) | |
167 | #define DEV_READ_COALESCING __cpu_to_le32(0x04) | |
168 | #define DEV_WRITE_COALESCING __cpu_to_le32(0x08) | |
169 | #define DEV_LAST_SHUTDOWN_DIRTY __cpu_to_le32(0x10) | |
170 | #define DEV_HIDDEN_AT_BOOT __cpu_to_le32(0x20) | |
171 | #define DEV_CURRENTLY_HIDDEN __cpu_to_le32(0x40) | |
172 | #define DEV_VERIFY_AND_FIX __cpu_to_le32(0x80) | |
173 | #define DEV_MAP_STATE_UNINIT __cpu_to_le32(0x100) | |
174 | #define DEV_NO_AUTO_RECOVERY __cpu_to_le32(0x200) | |
175 | #define DEV_CLONE_N_GO __cpu_to_le32(0x400) | |
176 | #define DEV_CLONE_MAN_SYNC __cpu_to_le32(0x800) | |
177 | #define DEV_CNG_MASTER_DISK_NUM __cpu_to_le32(0x1000) | |
178 | __u32 status; /* Persistent RaidDev status */ | |
179 | __u32 reserved_blocks; /* Reserved blocks at beginning of volume */ | |
180 | __u8 migr_priority; | |
181 | __u8 num_sub_vols; | |
182 | __u8 tid; | |
183 | __u8 cng_master_disk; | |
184 | __u16 cache_policy; | |
185 | __u8 cng_state; | |
186 | __u8 cng_sub_state; | |
187 | #define IMSM_DEV_FILLERS 10 | |
188 | __u32 filler[IMSM_DEV_FILLERS]; | |
189 | struct imsm_vol vol; | |
190 | } __attribute__ ((packed)); | |
191 | ||
192 | struct imsm_super { | |
193 | __u8 sig[MAX_SIGNATURE_LENGTH]; /* 0x00 - 0x1F */ | |
194 | __u32 check_sum; /* 0x20 - 0x23 MPB Checksum */ | |
195 | __u32 mpb_size; /* 0x24 - 0x27 Size of MPB */ | |
196 | __u32 family_num; /* 0x28 - 0x2B Checksum from first time this config was written */ | |
197 | __u32 generation_num; /* 0x2C - 0x2F Incremented each time this array's MPB is written */ | |
198 | __u32 error_log_size; /* 0x30 - 0x33 in bytes */ | |
199 | __u32 attributes; /* 0x34 - 0x37 */ | |
200 | __u8 num_disks; /* 0x38 Number of configured disks */ | |
201 | __u8 num_raid_devs; /* 0x39 Number of configured volumes */ | |
202 | __u8 error_log_pos; /* 0x3A */ | |
203 | __u8 fill[1]; /* 0x3B */ | |
204 | __u32 cache_size; /* 0x3c - 0x40 in mb */ | |
205 | __u32 orig_family_num; /* 0x40 - 0x43 original family num */ | |
206 | __u32 pwr_cycle_count; /* 0x44 - 0x47 simulated power cycle count for array */ | |
207 | __u32 bbm_log_size; /* 0x48 - 0x4B - size of bad Block Mgmt Log in bytes */ | |
208 | #define IMSM_FILLERS 35 | |
209 | __u32 filler[IMSM_FILLERS]; /* 0x4C - 0xD7 RAID_MPB_FILLERS */ | |
210 | struct imsm_disk disk[1]; /* 0xD8 diskTbl[numDisks] */ | |
211 | /* here comes imsm_dev[num_raid_devs] */ | |
212 | /* here comes BBM logs */ | |
213 | } __attribute__ ((packed)); | |
214 | ||
215 | #define BBM_LOG_MAX_ENTRIES 254 | |
216 | ||
217 | struct bbm_log_entry { | |
218 | __u64 defective_block_start; | |
219 | #define UNREADABLE 0xFFFFFFFF | |
220 | __u32 spare_block_offset; | |
221 | __u16 remapped_marked_count; | |
222 | __u16 disk_ordinal; | |
223 | } __attribute__ ((__packed__)); | |
224 | ||
225 | struct bbm_log { | |
226 | __u32 signature; /* 0xABADB10C */ | |
227 | __u32 entry_count; | |
228 | __u32 reserved_spare_block_count; /* 0 */ | |
229 | __u32 reserved; /* 0xFFFF */ | |
230 | __u64 first_spare_lba; | |
231 | struct bbm_log_entry mapped_block_entries[BBM_LOG_MAX_ENTRIES]; | |
232 | } __attribute__ ((__packed__)); | |
233 | ||
234 | ||
235 | #ifndef MDASSEMBLE | |
236 | static char *map_state_str[] = { "normal", "uninitialized", "degraded", "failed" }; | |
237 | #endif | |
238 | ||
239 | #define RAID_DISK_RESERVED_BLOCKS_IMSM_HI 2209 | |
240 | ||
241 | #define GEN_MIGR_AREA_SIZE 2048 /* General Migration Copy Area size in blocks */ | |
242 | ||
243 | #define MIGR_REC_BUF_SIZE 512 /* size of migr_record i/o buffer */ | |
244 | #define MIGR_REC_POSITION 512 /* migr_record position offset on disk, | |
245 | * MIGR_REC_BUF_SIZE <= MIGR_REC_POSITION | |
246 | */ | |
247 | ||
248 | ||
249 | #define UNIT_SRC_NORMAL 0 /* Source data for curr_migr_unit must | |
250 | * be recovered using srcMap */ | |
251 | #define UNIT_SRC_IN_CP_AREA 1 /* Source data for curr_migr_unit has | |
252 | * already been migrated and must | |
253 | * be recovered from checkpoint area */ | |
254 | struct migr_record { | |
255 | __u32 rec_status; /* Status used to determine how to restart | |
256 | * migration in case it aborts | |
257 | * in some fashion */ | |
258 | __u32 curr_migr_unit; /* 0..numMigrUnits-1 */ | |
259 | __u32 family_num; /* Family number of MPB | |
260 | * containing the RaidDev | |
261 | * that is migrating */ | |
262 | __u32 ascending_migr; /* True if migrating in increasing | |
263 | * order of lbas */ | |
264 | __u32 blocks_per_unit; /* Num disk blocks per unit of operation */ | |
265 | __u32 dest_depth_per_unit; /* Num member blocks each destMap | |
266 | * member disk | |
267 | * advances per unit-of-operation */ | |
268 | __u32 ckpt_area_pba; /* Pba of first block of ckpt copy area */ | |
269 | __u32 dest_1st_member_lba; /* First member lba on first | |
270 | * stripe of destination */ | |
271 | __u32 num_migr_units; /* Total num migration units-of-op */ | |
272 | __u32 post_migr_vol_cap; /* Size of volume after | |
273 | * migration completes */ | |
274 | __u32 post_migr_vol_cap_hi; /* Expansion space for LBA64 */ | |
275 | __u32 ckpt_read_disk_num; /* Which member disk in destSubMap[0] the | |
276 | * migration ckpt record was read from | |
277 | * (for recovered migrations) */ | |
278 | } __attribute__ ((__packed__)); | |
279 | ||
280 | static __u8 migr_type(struct imsm_dev *dev) | |
281 | { | |
282 | if (dev->vol.migr_type == MIGR_VERIFY && | |
283 | dev->status & DEV_VERIFY_AND_FIX) | |
284 | return MIGR_REPAIR; | |
285 | else | |
286 | return dev->vol.migr_type; | |
287 | } | |
288 | ||
289 | static void set_migr_type(struct imsm_dev *dev, __u8 migr_type) | |
290 | { | |
291 | /* for compatibility with older oroms convert MIGR_REPAIR, into | |
292 | * MIGR_VERIFY w/ DEV_VERIFY_AND_FIX status | |
293 | */ | |
294 | if (migr_type == MIGR_REPAIR) { | |
295 | dev->vol.migr_type = MIGR_VERIFY; | |
296 | dev->status |= DEV_VERIFY_AND_FIX; | |
297 | } else { | |
298 | dev->vol.migr_type = migr_type; | |
299 | dev->status &= ~DEV_VERIFY_AND_FIX; | |
300 | } | |
301 | } | |
302 | ||
303 | static unsigned int sector_count(__u32 bytes) | |
304 | { | |
305 | return ((bytes + (512-1)) & (~(512-1))) / 512; | |
306 | } | |
307 | ||
308 | static unsigned int mpb_sectors(struct imsm_super *mpb) | |
309 | { | |
310 | return sector_count(__le32_to_cpu(mpb->mpb_size)); | |
311 | } | |
312 | ||
313 | struct intel_dev { | |
314 | struct imsm_dev *dev; | |
315 | struct intel_dev *next; | |
316 | unsigned index; | |
317 | }; | |
318 | ||
319 | struct intel_hba { | |
320 | enum sys_dev_type type; | |
321 | char *path; | |
322 | char *pci_id; | |
323 | struct intel_hba *next; | |
324 | }; | |
325 | ||
326 | enum action { | |
327 | DISK_REMOVE = 1, | |
328 | DISK_ADD | |
329 | }; | |
330 | /* internal representation of IMSM metadata */ | |
331 | struct intel_super { | |
332 | union { | |
333 | void *buf; /* O_DIRECT buffer for reading/writing metadata */ | |
334 | struct imsm_super *anchor; /* immovable parameters */ | |
335 | }; | |
336 | union { | |
337 | void *migr_rec_buf; /* buffer for I/O operations */ | |
338 | struct migr_record *migr_rec; /* migration record */ | |
339 | }; | |
340 | size_t len; /* size of the 'buf' allocation */ | |
341 | void *next_buf; /* for realloc'ing buf from the manager */ | |
342 | size_t next_len; | |
343 | int updates_pending; /* count of pending updates for mdmon */ | |
344 | int current_vol; /* index of raid device undergoing creation */ | |
345 | __u32 create_offset; /* common start for 'current_vol' */ | |
346 | __u32 random; /* random data for seeding new family numbers */ | |
347 | struct intel_dev *devlist; | |
348 | struct dl { | |
349 | struct dl *next; | |
350 | int index; | |
351 | __u8 serial[MAX_RAID_SERIAL_LEN]; | |
352 | int major, minor; | |
353 | char *devname; | |
354 | struct imsm_disk disk; | |
355 | int fd; | |
356 | int extent_cnt; | |
357 | struct extent *e; /* for determining freespace @ create */ | |
358 | int raiddisk; /* slot to fill in autolayout */ | |
359 | enum action action; | |
360 | } *disks, *current_disk; | |
361 | struct dl *disk_mgmt_list; /* list of disks to add/remove while mdmon | |
362 | active */ | |
363 | struct dl *missing; /* disks removed while we weren't looking */ | |
364 | struct bbm_log *bbm_log; | |
365 | struct intel_hba *hba; /* device path of the raid controller for this metadata */ | |
366 | const struct imsm_orom *orom; /* platform firmware support */ | |
367 | struct intel_super *next; /* (temp) list for disambiguating family_num */ | |
368 | }; | |
369 | ||
370 | struct intel_disk { | |
371 | struct imsm_disk disk; | |
372 | #define IMSM_UNKNOWN_OWNER (-1) | |
373 | int owner; | |
374 | struct intel_disk *next; | |
375 | }; | |
376 | ||
377 | struct extent { | |
378 | unsigned long long start, size; | |
379 | }; | |
380 | ||
381 | /* definitions of reshape process types */ | |
382 | enum imsm_reshape_type { | |
383 | CH_TAKEOVER, | |
384 | CH_MIGRATION, | |
385 | }; | |
386 | ||
387 | /* definition of messages passed to imsm_process_update */ | |
388 | enum imsm_update_type { | |
389 | update_activate_spare, | |
390 | update_create_array, | |
391 | update_kill_array, | |
392 | update_rename_array, | |
393 | update_add_remove_disk, | |
394 | update_reshape_container_disks, | |
395 | update_reshape_migration, | |
396 | update_takeover, | |
397 | update_general_migration_checkpoint, | |
398 | }; | |
399 | ||
400 | struct imsm_update_activate_spare { | |
401 | enum imsm_update_type type; | |
402 | struct dl *dl; | |
403 | int slot; | |
404 | int array; | |
405 | struct imsm_update_activate_spare *next; | |
406 | }; | |
407 | ||
408 | struct geo_params { | |
409 | int dev_id; | |
410 | char *dev_name; | |
411 | long long size; | |
412 | int level; | |
413 | int layout; | |
414 | int chunksize; | |
415 | int raid_disks; | |
416 | }; | |
417 | ||
418 | enum takeover_direction { | |
419 | R10_TO_R0, | |
420 | R0_TO_R10 | |
421 | }; | |
422 | struct imsm_update_takeover { | |
423 | enum imsm_update_type type; | |
424 | int subarray; | |
425 | enum takeover_direction direction; | |
426 | }; | |
427 | ||
428 | struct imsm_update_reshape { | |
429 | enum imsm_update_type type; | |
430 | int old_raid_disks; | |
431 | int new_raid_disks; | |
432 | ||
433 | int new_disks[1]; /* new_raid_disks - old_raid_disks makedev number */ | |
434 | }; | |
435 | ||
436 | struct imsm_update_reshape_migration { | |
437 | enum imsm_update_type type; | |
438 | int old_raid_disks; | |
439 | int new_raid_disks; | |
440 | /* fields for array migration changes | |
441 | */ | |
442 | int subdev; | |
443 | int new_level; | |
444 | int new_layout; | |
445 | int new_chunksize; | |
446 | ||
447 | int new_disks[1]; /* new_raid_disks - old_raid_disks makedev number */ | |
448 | }; | |
449 | ||
450 | struct imsm_update_general_migration_checkpoint { | |
451 | enum imsm_update_type type; | |
452 | __u32 curr_migr_unit; | |
453 | }; | |
454 | ||
455 | struct disk_info { | |
456 | __u8 serial[MAX_RAID_SERIAL_LEN]; | |
457 | }; | |
458 | ||
459 | struct imsm_update_create_array { | |
460 | enum imsm_update_type type; | |
461 | int dev_idx; | |
462 | struct imsm_dev dev; | |
463 | }; | |
464 | ||
465 | struct imsm_update_kill_array { | |
466 | enum imsm_update_type type; | |
467 | int dev_idx; | |
468 | }; | |
469 | ||
470 | struct imsm_update_rename_array { | |
471 | enum imsm_update_type type; | |
472 | __u8 name[MAX_RAID_SERIAL_LEN]; | |
473 | int dev_idx; | |
474 | }; | |
475 | ||
476 | struct imsm_update_add_remove_disk { | |
477 | enum imsm_update_type type; | |
478 | }; | |
479 | ||
480 | ||
481 | static const char *_sys_dev_type[] = { | |
482 | [SYS_DEV_UNKNOWN] = "Unknown", | |
483 | [SYS_DEV_SAS] = "SAS", | |
484 | [SYS_DEV_SATA] = "SATA" | |
485 | }; | |
486 | ||
487 | const char *get_sys_dev_type(enum sys_dev_type type) | |
488 | { | |
489 | if (type >= SYS_DEV_MAX) | |
490 | type = SYS_DEV_UNKNOWN; | |
491 | ||
492 | return _sys_dev_type[type]; | |
493 | } | |
494 | ||
495 | static struct intel_hba * alloc_intel_hba(struct sys_dev *device) | |
496 | { | |
497 | struct intel_hba *result = malloc(sizeof(*result)); | |
498 | if (result) { | |
499 | result->type = device->type; | |
500 | result->path = strdup(device->path); | |
501 | result->next = NULL; | |
502 | if (result->path && (result->pci_id = strrchr(result->path, '/')) != NULL) | |
503 | result->pci_id++; | |
504 | } | |
505 | return result; | |
506 | } | |
507 | ||
508 | static struct intel_hba * find_intel_hba(struct intel_hba *hba, struct sys_dev *device) | |
509 | { | |
510 | struct intel_hba *result=NULL; | |
511 | for (result = hba; result; result = result->next) { | |
512 | if (result->type == device->type && strcmp(result->path, device->path) == 0) | |
513 | break; | |
514 | } | |
515 | return result; | |
516 | } | |
517 | ||
518 | static int attach_hba_to_super(struct intel_super *super, struct sys_dev *device) | |
519 | { | |
520 | struct intel_hba *hba; | |
521 | ||
522 | /* check if disk attached to Intel HBA */ | |
523 | hba = find_intel_hba(super->hba, device); | |
524 | if (hba != NULL) | |
525 | return 1; | |
526 | /* Check if HBA is already attached to super */ | |
527 | if (super->hba == NULL) { | |
528 | super->hba = alloc_intel_hba(device); | |
529 | return 1; | |
530 | } | |
531 | ||
532 | hba = super->hba; | |
533 | /* Intel metadata allows for all disks attached to the same type HBA. | |
534 | * Do not sypport odf HBA types mixing | |
535 | */ | |
536 | if (device->type != hba->type) | |
537 | return 2; | |
538 | ||
539 | while (hba->next) | |
540 | hba = hba->next; | |
541 | ||
542 | hba->next = alloc_intel_hba(device); | |
543 | return 1; | |
544 | } | |
545 | ||
546 | static struct sys_dev* find_disk_attached_hba(int fd, const char *devname) | |
547 | { | |
548 | struct sys_dev *list, *elem, *prev; | |
549 | char *disk_path; | |
550 | ||
551 | if ((list = find_intel_devices()) == NULL) | |
552 | return 0; | |
553 | ||
554 | if (fd < 0) | |
555 | disk_path = (char *) devname; | |
556 | else | |
557 | disk_path = diskfd_to_devpath(fd); | |
558 | ||
559 | if (!disk_path) { | |
560 | free_sys_dev(&list); | |
561 | return 0; | |
562 | } | |
563 | ||
564 | for (prev = NULL, elem = list; elem; prev = elem, elem = elem->next) { | |
565 | if (path_attached_to_hba(disk_path, elem->path)) { | |
566 | if (prev == NULL) | |
567 | list = list->next; | |
568 | else | |
569 | prev->next = elem->next; | |
570 | elem->next = NULL; | |
571 | if (disk_path != devname) | |
572 | free(disk_path); | |
573 | free_sys_dev(&list); | |
574 | return elem; | |
575 | } | |
576 | } | |
577 | if (disk_path != devname) | |
578 | free(disk_path); | |
579 | free_sys_dev(&list); | |
580 | ||
581 | return NULL; | |
582 | } | |
583 | ||
584 | ||
585 | static int find_intel_hba_capability(int fd, struct intel_super *super, | |
586 | char *devname); | |
587 | ||
588 | static struct supertype *match_metadata_desc_imsm(char *arg) | |
589 | { | |
590 | struct supertype *st; | |
591 | ||
592 | if (strcmp(arg, "imsm") != 0 && | |
593 | strcmp(arg, "default") != 0 | |
594 | ) | |
595 | return NULL; | |
596 | ||
597 | st = malloc(sizeof(*st)); | |
598 | if (!st) | |
599 | return NULL; | |
600 | memset(st, 0, sizeof(*st)); | |
601 | st->container_dev = NoMdDev; | |
602 | st->ss = &super_imsm; | |
603 | st->max_devs = IMSM_MAX_DEVICES; | |
604 | st->minor_version = 0; | |
605 | st->sb = NULL; | |
606 | return st; | |
607 | } | |
608 | ||
609 | #ifndef MDASSEMBLE | |
610 | static __u8 *get_imsm_version(struct imsm_super *mpb) | |
611 | { | |
612 | return &mpb->sig[MPB_SIG_LEN]; | |
613 | } | |
614 | #endif | |
615 | ||
616 | /* retrieve a disk directly from the anchor when the anchor is known to be | |
617 | * up-to-date, currently only at load time | |
618 | */ | |
619 | static struct imsm_disk *__get_imsm_disk(struct imsm_super *mpb, __u8 index) | |
620 | { | |
621 | if (index >= mpb->num_disks) | |
622 | return NULL; | |
623 | return &mpb->disk[index]; | |
624 | } | |
625 | ||
626 | /* retrieve the disk description based on a index of the disk | |
627 | * in the sub-array | |
628 | */ | |
629 | static struct dl *get_imsm_dl_disk(struct intel_super *super, __u8 index) | |
630 | { | |
631 | struct dl *d; | |
632 | ||
633 | for (d = super->disks; d; d = d->next) | |
634 | if (d->index == index) | |
635 | return d; | |
636 | ||
637 | return NULL; | |
638 | } | |
639 | /* retrieve a disk from the parsed metadata */ | |
640 | static struct imsm_disk *get_imsm_disk(struct intel_super *super, __u8 index) | |
641 | { | |
642 | struct dl *dl; | |
643 | ||
644 | dl = get_imsm_dl_disk(super, index); | |
645 | if (dl) | |
646 | return &dl->disk; | |
647 | ||
648 | return NULL; | |
649 | } | |
650 | ||
651 | /* generate a checksum directly from the anchor when the anchor is known to be | |
652 | * up-to-date, currently only at load or write_super after coalescing | |
653 | */ | |
654 | static __u32 __gen_imsm_checksum(struct imsm_super *mpb) | |
655 | { | |
656 | __u32 end = mpb->mpb_size / sizeof(end); | |
657 | __u32 *p = (__u32 *) mpb; | |
658 | __u32 sum = 0; | |
659 | ||
660 | while (end--) { | |
661 | sum += __le32_to_cpu(*p); | |
662 | p++; | |
663 | } | |
664 | ||
665 | return sum - __le32_to_cpu(mpb->check_sum); | |
666 | } | |
667 | ||
668 | static size_t sizeof_imsm_map(struct imsm_map *map) | |
669 | { | |
670 | return sizeof(struct imsm_map) + sizeof(__u32) * (map->num_members - 1); | |
671 | } | |
672 | ||
673 | struct imsm_map *get_imsm_map(struct imsm_dev *dev, int second_map) | |
674 | { | |
675 | /* A device can have 2 maps if it is in the middle of a migration. | |
676 | * If second_map is: | |
677 | * MAP_0 - we return the first map | |
678 | * MAP_1 - we return the second map if it exists, else NULL | |
679 | * MAP_X - we return the second map if it exists, else the first | |
680 | */ | |
681 | struct imsm_map *map = &dev->vol.map[0]; | |
682 | struct imsm_map *map2 = NULL; | |
683 | ||
684 | if (dev->vol.migr_state) | |
685 | map2 = (void *)map + sizeof_imsm_map(map); | |
686 | ||
687 | switch (second_map) { | |
688 | case MAP_0: | |
689 | break; | |
690 | case MAP_1: | |
691 | map = map2; | |
692 | break; | |
693 | case MAP_X: | |
694 | if (map2) | |
695 | map = map2; | |
696 | break; | |
697 | default: | |
698 | map = NULL; | |
699 | } | |
700 | return map; | |
701 | ||
702 | } | |
703 | ||
704 | /* return the size of the device. | |
705 | * migr_state increases the returned size if map[0] were to be duplicated | |
706 | */ | |
707 | static size_t sizeof_imsm_dev(struct imsm_dev *dev, int migr_state) | |
708 | { | |
709 | size_t size = sizeof(*dev) - sizeof(struct imsm_map) + | |
710 | sizeof_imsm_map(get_imsm_map(dev, MAP_0)); | |
711 | ||
712 | /* migrating means an additional map */ | |
713 | if (dev->vol.migr_state) | |
714 | size += sizeof_imsm_map(get_imsm_map(dev, MAP_1)); | |
715 | else if (migr_state) | |
716 | size += sizeof_imsm_map(get_imsm_map(dev, MAP_0)); | |
717 | ||
718 | return size; | |
719 | } | |
720 | ||
721 | #ifndef MDASSEMBLE | |
722 | /* retrieve disk serial number list from a metadata update */ | |
723 | static struct disk_info *get_disk_info(struct imsm_update_create_array *update) | |
724 | { | |
725 | void *u = update; | |
726 | struct disk_info *inf; | |
727 | ||
728 | inf = u + sizeof(*update) - sizeof(struct imsm_dev) + | |
729 | sizeof_imsm_dev(&update->dev, 0); | |
730 | ||
731 | return inf; | |
732 | } | |
733 | #endif | |
734 | ||
735 | static struct imsm_dev *__get_imsm_dev(struct imsm_super *mpb, __u8 index) | |
736 | { | |
737 | int offset; | |
738 | int i; | |
739 | void *_mpb = mpb; | |
740 | ||
741 | if (index >= mpb->num_raid_devs) | |
742 | return NULL; | |
743 | ||
744 | /* devices start after all disks */ | |
745 | offset = ((void *) &mpb->disk[mpb->num_disks]) - _mpb; | |
746 | ||
747 | for (i = 0; i <= index; i++) | |
748 | if (i == index) | |
749 | return _mpb + offset; | |
750 | else | |
751 | offset += sizeof_imsm_dev(_mpb + offset, 0); | |
752 | ||
753 | return NULL; | |
754 | } | |
755 | ||
756 | static struct imsm_dev *get_imsm_dev(struct intel_super *super, __u8 index) | |
757 | { | |
758 | struct intel_dev *dv; | |
759 | ||
760 | if (index >= super->anchor->num_raid_devs) | |
761 | return NULL; | |
762 | for (dv = super->devlist; dv; dv = dv->next) | |
763 | if (dv->index == index) | |
764 | return dv->dev; | |
765 | return NULL; | |
766 | } | |
767 | ||
768 | /* | |
769 | * for second_map: | |
770 | * == MAP_0 get first map | |
771 | * == MAP_1 get second map | |
772 | * == MAP_X than get map according to the current migr_state | |
773 | */ | |
774 | static __u32 get_imsm_ord_tbl_ent(struct imsm_dev *dev, | |
775 | int slot, | |
776 | int second_map) | |
777 | { | |
778 | struct imsm_map *map; | |
779 | ||
780 | map = get_imsm_map(dev, second_map); | |
781 | ||
782 | /* top byte identifies disk under rebuild */ | |
783 | return __le32_to_cpu(map->disk_ord_tbl[slot]); | |
784 | } | |
785 | ||
786 | #define ord_to_idx(ord) (((ord) << 8) >> 8) | |
787 | static __u32 get_imsm_disk_idx(struct imsm_dev *dev, int slot, int second_map) | |
788 | { | |
789 | __u32 ord = get_imsm_ord_tbl_ent(dev, slot, second_map); | |
790 | ||
791 | return ord_to_idx(ord); | |
792 | } | |
793 | ||
794 | static void set_imsm_ord_tbl_ent(struct imsm_map *map, int slot, __u32 ord) | |
795 | { | |
796 | map->disk_ord_tbl[slot] = __cpu_to_le32(ord); | |
797 | } | |
798 | ||
799 | static int get_imsm_disk_slot(struct imsm_map *map, unsigned idx) | |
800 | { | |
801 | int slot; | |
802 | __u32 ord; | |
803 | ||
804 | for (slot = 0; slot < map->num_members; slot++) { | |
805 | ord = __le32_to_cpu(map->disk_ord_tbl[slot]); | |
806 | if (ord_to_idx(ord) == idx) | |
807 | return slot; | |
808 | } | |
809 | ||
810 | return -1; | |
811 | } | |
812 | ||
813 | static int get_imsm_raid_level(struct imsm_map *map) | |
814 | { | |
815 | if (map->raid_level == 1) { | |
816 | if (map->num_members == 2) | |
817 | return 1; | |
818 | else | |
819 | return 10; | |
820 | } | |
821 | ||
822 | return map->raid_level; | |
823 | } | |
824 | ||
825 | static int cmp_extent(const void *av, const void *bv) | |
826 | { | |
827 | const struct extent *a = av; | |
828 | const struct extent *b = bv; | |
829 | if (a->start < b->start) | |
830 | return -1; | |
831 | if (a->start > b->start) | |
832 | return 1; | |
833 | return 0; | |
834 | } | |
835 | ||
836 | static int count_memberships(struct dl *dl, struct intel_super *super) | |
837 | { | |
838 | int memberships = 0; | |
839 | int i; | |
840 | ||
841 | for (i = 0; i < super->anchor->num_raid_devs; i++) { | |
842 | struct imsm_dev *dev = get_imsm_dev(super, i); | |
843 | struct imsm_map *map = get_imsm_map(dev, MAP_0); | |
844 | ||
845 | if (get_imsm_disk_slot(map, dl->index) >= 0) | |
846 | memberships++; | |
847 | } | |
848 | ||
849 | return memberships; | |
850 | } | |
851 | ||
852 | static __u32 imsm_min_reserved_sectors(struct intel_super *super); | |
853 | ||
854 | static struct extent *get_extents(struct intel_super *super, struct dl *dl) | |
855 | { | |
856 | /* find a list of used extents on the given physical device */ | |
857 | struct extent *rv, *e; | |
858 | int i; | |
859 | int memberships = count_memberships(dl, super); | |
860 | __u32 reservation; | |
861 | ||
862 | /* trim the reserved area for spares, so they can join any array | |
863 | * regardless of whether the OROM has assigned sectors from the | |
864 | * IMSM_RESERVED_SECTORS region | |
865 | */ | |
866 | if (dl->index == -1) | |
867 | reservation = imsm_min_reserved_sectors(super); | |
868 | else | |
869 | reservation = MPB_SECTOR_CNT + IMSM_RESERVED_SECTORS; | |
870 | ||
871 | rv = malloc(sizeof(struct extent) * (memberships + 1)); | |
872 | if (!rv) | |
873 | return NULL; | |
874 | e = rv; | |
875 | ||
876 | for (i = 0; i < super->anchor->num_raid_devs; i++) { | |
877 | struct imsm_dev *dev = get_imsm_dev(super, i); | |
878 | struct imsm_map *map = get_imsm_map(dev, MAP_0); | |
879 | ||
880 | if (get_imsm_disk_slot(map, dl->index) >= 0) { | |
881 | e->start = __le32_to_cpu(map->pba_of_lba0); | |
882 | e->size = __le32_to_cpu(map->blocks_per_member); | |
883 | e++; | |
884 | } | |
885 | } | |
886 | qsort(rv, memberships, sizeof(*rv), cmp_extent); | |
887 | ||
888 | /* determine the start of the metadata | |
889 | * when no raid devices are defined use the default | |
890 | * ...otherwise allow the metadata to truncate the value | |
891 | * as is the case with older versions of imsm | |
892 | */ | |
893 | if (memberships) { | |
894 | struct extent *last = &rv[memberships - 1]; | |
895 | __u32 remainder; | |
896 | ||
897 | remainder = __le32_to_cpu(dl->disk.total_blocks) - | |
898 | (last->start + last->size); | |
899 | /* round down to 1k block to satisfy precision of the kernel | |
900 | * 'size' interface | |
901 | */ | |
902 | remainder &= ~1UL; | |
903 | /* make sure remainder is still sane */ | |
904 | if (remainder < (unsigned)ROUND_UP(super->len, 512) >> 9) | |
905 | remainder = ROUND_UP(super->len, 512) >> 9; | |
906 | if (reservation > remainder) | |
907 | reservation = remainder; | |
908 | } | |
909 | e->start = __le32_to_cpu(dl->disk.total_blocks) - reservation; | |
910 | e->size = 0; | |
911 | return rv; | |
912 | } | |
913 | ||
914 | /* try to determine how much space is reserved for metadata from | |
915 | * the last get_extents() entry, otherwise fallback to the | |
916 | * default | |
917 | */ | |
918 | static __u32 imsm_reserved_sectors(struct intel_super *super, struct dl *dl) | |
919 | { | |
920 | struct extent *e; | |
921 | int i; | |
922 | __u32 rv; | |
923 | ||
924 | /* for spares just return a minimal reservation which will grow | |
925 | * once the spare is picked up by an array | |
926 | */ | |
927 | if (dl->index == -1) | |
928 | return MPB_SECTOR_CNT; | |
929 | ||
930 | e = get_extents(super, dl); | |
931 | if (!e) | |
932 | return MPB_SECTOR_CNT + IMSM_RESERVED_SECTORS; | |
933 | ||
934 | /* scroll to last entry */ | |
935 | for (i = 0; e[i].size; i++) | |
936 | continue; | |
937 | ||
938 | rv = __le32_to_cpu(dl->disk.total_blocks) - e[i].start; | |
939 | ||
940 | free(e); | |
941 | ||
942 | return rv; | |
943 | } | |
944 | ||
945 | static int is_spare(struct imsm_disk *disk) | |
946 | { | |
947 | return (disk->status & SPARE_DISK) == SPARE_DISK; | |
948 | } | |
949 | ||
950 | static int is_configured(struct imsm_disk *disk) | |
951 | { | |
952 | return (disk->status & CONFIGURED_DISK) == CONFIGURED_DISK; | |
953 | } | |
954 | ||
955 | static int is_failed(struct imsm_disk *disk) | |
956 | { | |
957 | return (disk->status & FAILED_DISK) == FAILED_DISK; | |
958 | } | |
959 | ||
960 | /* try to determine how much space is reserved for metadata from | |
961 | * the last get_extents() entry on the smallest active disk, | |
962 | * otherwise fallback to the default | |
963 | */ | |
964 | static __u32 imsm_min_reserved_sectors(struct intel_super *super) | |
965 | { | |
966 | struct extent *e; | |
967 | int i; | |
968 | __u32 min_active, remainder; | |
969 | __u32 rv = MPB_SECTOR_CNT + IMSM_RESERVED_SECTORS; | |
970 | struct dl *dl, *dl_min = NULL; | |
971 | ||
972 | if (!super) | |
973 | return rv; | |
974 | ||
975 | min_active = 0; | |
976 | for (dl = super->disks; dl; dl = dl->next) { | |
977 | if (dl->index < 0) | |
978 | continue; | |
979 | if (dl->disk.total_blocks < min_active || min_active == 0) { | |
980 | dl_min = dl; | |
981 | min_active = dl->disk.total_blocks; | |
982 | } | |
983 | } | |
984 | if (!dl_min) | |
985 | return rv; | |
986 | ||
987 | /* find last lba used by subarrays on the smallest active disk */ | |
988 | e = get_extents(super, dl_min); | |
989 | if (!e) | |
990 | return rv; | |
991 | for (i = 0; e[i].size; i++) | |
992 | continue; | |
993 | ||
994 | remainder = min_active - e[i].start; | |
995 | free(e); | |
996 | ||
997 | /* to give priority to recovery we should not require full | |
998 | IMSM_RESERVED_SECTORS from the spare */ | |
999 | rv = MPB_SECTOR_CNT + NUM_BLOCKS_DIRTY_STRIPE_REGION; | |
1000 | ||
1001 | /* if real reservation is smaller use that value */ | |
1002 | return (remainder < rv) ? remainder : rv; | |
1003 | } | |
1004 | ||
1005 | /* Return minimum size of a spare that can be used in this array*/ | |
1006 | static unsigned long long min_acceptable_spare_size_imsm(struct supertype *st) | |
1007 | { | |
1008 | struct intel_super *super = st->sb; | |
1009 | struct dl *dl; | |
1010 | struct extent *e; | |
1011 | int i; | |
1012 | unsigned long long rv = 0; | |
1013 | ||
1014 | if (!super) | |
1015 | return rv; | |
1016 | /* find first active disk in array */ | |
1017 | dl = super->disks; | |
1018 | while (dl && (is_failed(&dl->disk) || dl->index == -1)) | |
1019 | dl = dl->next; | |
1020 | if (!dl) | |
1021 | return rv; | |
1022 | /* find last lba used by subarrays */ | |
1023 | e = get_extents(super, dl); | |
1024 | if (!e) | |
1025 | return rv; | |
1026 | for (i = 0; e[i].size; i++) | |
1027 | continue; | |
1028 | if (i > 0) | |
1029 | rv = e[i-1].start + e[i-1].size; | |
1030 | free(e); | |
1031 | ||
1032 | /* add the amount of space needed for metadata */ | |
1033 | rv = rv + imsm_min_reserved_sectors(super); | |
1034 | ||
1035 | return rv * 512; | |
1036 | } | |
1037 | ||
1038 | static int is_gen_migration(struct imsm_dev *dev); | |
1039 | ||
1040 | #ifndef MDASSEMBLE | |
1041 | static __u64 blocks_per_migr_unit(struct intel_super *super, | |
1042 | struct imsm_dev *dev); | |
1043 | ||
1044 | static void print_imsm_dev(struct intel_super *super, | |
1045 | struct imsm_dev *dev, | |
1046 | char *uuid, | |
1047 | int disk_idx) | |
1048 | { | |
1049 | __u64 sz; | |
1050 | int slot, i; | |
1051 | struct imsm_map *map = get_imsm_map(dev, MAP_0); | |
1052 | struct imsm_map *map2 = get_imsm_map(dev, MAP_1); | |
1053 | __u32 ord; | |
1054 | ||
1055 | printf("\n"); | |
1056 | printf("[%.16s]:\n", dev->volume); | |
1057 | printf(" UUID : %s\n", uuid); | |
1058 | printf(" RAID Level : %d", get_imsm_raid_level(map)); | |
1059 | if (map2) | |
1060 | printf(" <-- %d", get_imsm_raid_level(map2)); | |
1061 | printf("\n"); | |
1062 | printf(" Members : %d", map->num_members); | |
1063 | if (map2) | |
1064 | printf(" <-- %d", map2->num_members); | |
1065 | printf("\n"); | |
1066 | printf(" Slots : ["); | |
1067 | for (i = 0; i < map->num_members; i++) { | |
1068 | ord = get_imsm_ord_tbl_ent(dev, i, MAP_0); | |
1069 | printf("%s", ord & IMSM_ORD_REBUILD ? "_" : "U"); | |
1070 | } | |
1071 | printf("]"); | |
1072 | if (map2) { | |
1073 | printf(" <-- ["); | |
1074 | for (i = 0; i < map2->num_members; i++) { | |
1075 | ord = get_imsm_ord_tbl_ent(dev, i, MAP_1); | |
1076 | printf("%s", ord & IMSM_ORD_REBUILD ? "_" : "U"); | |
1077 | } | |
1078 | printf("]"); | |
1079 | } | |
1080 | printf("\n"); | |
1081 | printf(" Failed disk : "); | |
1082 | if (map->failed_disk_num == 0xff) | |
1083 | printf("none"); | |
1084 | else | |
1085 | printf("%i", map->failed_disk_num); | |
1086 | printf("\n"); | |
1087 | slot = get_imsm_disk_slot(map, disk_idx); | |
1088 | if (slot >= 0) { | |
1089 | ord = get_imsm_ord_tbl_ent(dev, slot, MAP_X); | |
1090 | printf(" This Slot : %d%s\n", slot, | |
1091 | ord & IMSM_ORD_REBUILD ? " (out-of-sync)" : ""); | |
1092 | } else | |
1093 | printf(" This Slot : ?\n"); | |
1094 | sz = __le32_to_cpu(dev->size_high); | |
1095 | sz <<= 32; | |
1096 | sz += __le32_to_cpu(dev->size_low); | |
1097 | printf(" Array Size : %llu%s\n", (unsigned long long)sz, | |
1098 | human_size(sz * 512)); | |
1099 | sz = __le32_to_cpu(map->blocks_per_member); | |
1100 | printf(" Per Dev Size : %llu%s\n", (unsigned long long)sz, | |
1101 | human_size(sz * 512)); | |
1102 | printf(" Sector Offset : %u\n", | |
1103 | __le32_to_cpu(map->pba_of_lba0)); | |
1104 | printf(" Num Stripes : %u\n", | |
1105 | __le32_to_cpu(map->num_data_stripes)); | |
1106 | printf(" Chunk Size : %u KiB", | |
1107 | __le16_to_cpu(map->blocks_per_strip) / 2); | |
1108 | if (map2) | |
1109 | printf(" <-- %u KiB", | |
1110 | __le16_to_cpu(map2->blocks_per_strip) / 2); | |
1111 | printf("\n"); | |
1112 | printf(" Reserved : %d\n", __le32_to_cpu(dev->reserved_blocks)); | |
1113 | printf(" Migrate State : "); | |
1114 | if (dev->vol.migr_state) { | |
1115 | if (migr_type(dev) == MIGR_INIT) | |
1116 | printf("initialize\n"); | |
1117 | else if (migr_type(dev) == MIGR_REBUILD) | |
1118 | printf("rebuild\n"); | |
1119 | else if (migr_type(dev) == MIGR_VERIFY) | |
1120 | printf("check\n"); | |
1121 | else if (migr_type(dev) == MIGR_GEN_MIGR) | |
1122 | printf("general migration\n"); | |
1123 | else if (migr_type(dev) == MIGR_STATE_CHANGE) | |
1124 | printf("state change\n"); | |
1125 | else if (migr_type(dev) == MIGR_REPAIR) | |
1126 | printf("repair\n"); | |
1127 | else | |
1128 | printf("<unknown:%d>\n", migr_type(dev)); | |
1129 | } else | |
1130 | printf("idle\n"); | |
1131 | printf(" Map State : %s", map_state_str[map->map_state]); | |
1132 | if (dev->vol.migr_state) { | |
1133 | struct imsm_map *map = get_imsm_map(dev, MAP_1); | |
1134 | ||
1135 | printf(" <-- %s", map_state_str[map->map_state]); | |
1136 | printf("\n Checkpoint : %u ", | |
1137 | __le32_to_cpu(dev->vol.curr_migr_unit)); | |
1138 | if ((is_gen_migration(dev)) && ((slot > 1) || (slot < 0))) | |
1139 | printf("(N/A)"); | |
1140 | else | |
1141 | printf("(%llu)", (unsigned long long) | |
1142 | blocks_per_migr_unit(super, dev)); | |
1143 | } | |
1144 | printf("\n"); | |
1145 | printf(" Dirty State : %s\n", dev->vol.dirty ? "dirty" : "clean"); | |
1146 | } | |
1147 | ||
1148 | static void print_imsm_disk(struct imsm_disk *disk, int index, __u32 reserved) | |
1149 | { | |
1150 | char str[MAX_RAID_SERIAL_LEN + 1]; | |
1151 | __u64 sz; | |
1152 | ||
1153 | if (index < -1 || !disk) | |
1154 | return; | |
1155 | ||
1156 | printf("\n"); | |
1157 | snprintf(str, MAX_RAID_SERIAL_LEN + 1, "%s", disk->serial); | |
1158 | if (index >= 0) | |
1159 | printf(" Disk%02d Serial : %s\n", index, str); | |
1160 | else | |
1161 | printf(" Disk Serial : %s\n", str); | |
1162 | printf(" State :%s%s%s\n", is_spare(disk) ? " spare" : "", | |
1163 | is_configured(disk) ? " active" : "", | |
1164 | is_failed(disk) ? " failed" : ""); | |
1165 | printf(" Id : %08x\n", __le32_to_cpu(disk->scsi_id)); | |
1166 | sz = __le32_to_cpu(disk->total_blocks) - reserved; | |
1167 | printf(" Usable Size : %llu%s\n", (unsigned long long)sz, | |
1168 | human_size(sz * 512)); | |
1169 | } | |
1170 | ||
1171 | void examine_migr_rec_imsm(struct intel_super *super) | |
1172 | { | |
1173 | struct migr_record *migr_rec = super->migr_rec; | |
1174 | struct imsm_super *mpb = super->anchor; | |
1175 | int i; | |
1176 | ||
1177 | for (i = 0; i < mpb->num_raid_devs; i++) { | |
1178 | struct imsm_dev *dev = __get_imsm_dev(mpb, i); | |
1179 | struct imsm_map *map; | |
1180 | int slot = -1; | |
1181 | ||
1182 | if (is_gen_migration(dev) == 0) | |
1183 | continue; | |
1184 | ||
1185 | printf("\nMigration Record Information:"); | |
1186 | ||
1187 | /* first map under migration */ | |
1188 | map = get_imsm_map(dev, MAP_0); | |
1189 | if (map) | |
1190 | slot = get_imsm_disk_slot(map, super->disks->index); | |
1191 | if ((map == NULL) || (slot > 1) || (slot < 0)) { | |
1192 | printf(" Empty\n "); | |
1193 | printf("Examine one of first two disks in array\n"); | |
1194 | break; | |
1195 | } | |
1196 | printf("\n Status : "); | |
1197 | if (__le32_to_cpu(migr_rec->rec_status) == UNIT_SRC_NORMAL) | |
1198 | printf("Normal\n"); | |
1199 | else | |
1200 | printf("Contains Data\n"); | |
1201 | printf(" Current Unit : %u\n", | |
1202 | __le32_to_cpu(migr_rec->curr_migr_unit)); | |
1203 | printf(" Family : %u\n", | |
1204 | __le32_to_cpu(migr_rec->family_num)); | |
1205 | printf(" Ascending : %u\n", | |
1206 | __le32_to_cpu(migr_rec->ascending_migr)); | |
1207 | printf(" Blocks Per Unit : %u\n", | |
1208 | __le32_to_cpu(migr_rec->blocks_per_unit)); | |
1209 | printf(" Dest. Depth Per Unit : %u\n", | |
1210 | __le32_to_cpu(migr_rec->dest_depth_per_unit)); | |
1211 | printf(" Checkpoint Area pba : %u\n", | |
1212 | __le32_to_cpu(migr_rec->ckpt_area_pba)); | |
1213 | printf(" First member lba : %u\n", | |
1214 | __le32_to_cpu(migr_rec->dest_1st_member_lba)); | |
1215 | printf(" Total Number of Units : %u\n", | |
1216 | __le32_to_cpu(migr_rec->num_migr_units)); | |
1217 | printf(" Size of volume : %u\n", | |
1218 | __le32_to_cpu(migr_rec->post_migr_vol_cap)); | |
1219 | printf(" Expansion space for LBA64 : %u\n", | |
1220 | __le32_to_cpu(migr_rec->post_migr_vol_cap_hi)); | |
1221 | printf(" Record was read from : %u\n", | |
1222 | __le32_to_cpu(migr_rec->ckpt_read_disk_num)); | |
1223 | ||
1224 | break; | |
1225 | } | |
1226 | } | |
1227 | #endif /* MDASSEMBLE */ | |
1228 | /******************************************************************************* | |
1229 | * function: imsm_check_attributes | |
1230 | * Description: Function checks if features represented by attributes flags | |
1231 | * are supported by mdadm. | |
1232 | * Parameters: | |
1233 | * attributes - Attributes read from metadata | |
1234 | * Returns: | |
1235 | * 0 - passed attributes contains unsupported features flags | |
1236 | * 1 - all features are supported | |
1237 | ******************************************************************************/ | |
1238 | static int imsm_check_attributes(__u32 attributes) | |
1239 | { | |
1240 | int ret_val = 1; | |
1241 | __u32 not_supported = MPB_ATTRIB_SUPPORTED^0xffffffff; | |
1242 | ||
1243 | not_supported &= ~MPB_ATTRIB_IGNORED; | |
1244 | ||
1245 | not_supported &= attributes; | |
1246 | if (not_supported) { | |
1247 | fprintf(stderr, Name "(IMSM): Unsupported attributes : %x\n", | |
1248 | (unsigned)__le32_to_cpu(not_supported)); | |
1249 | if (not_supported & MPB_ATTRIB_CHECKSUM_VERIFY) { | |
1250 | dprintf("\t\tMPB_ATTRIB_CHECKSUM_VERIFY \n"); | |
1251 | not_supported ^= MPB_ATTRIB_CHECKSUM_VERIFY; | |
1252 | } | |
1253 | if (not_supported & MPB_ATTRIB_2TB) { | |
1254 | dprintf("\t\tMPB_ATTRIB_2TB\n"); | |
1255 | not_supported ^= MPB_ATTRIB_2TB; | |
1256 | } | |
1257 | if (not_supported & MPB_ATTRIB_RAID0) { | |
1258 | dprintf("\t\tMPB_ATTRIB_RAID0\n"); | |
1259 | not_supported ^= MPB_ATTRIB_RAID0; | |
1260 | } | |
1261 | if (not_supported & MPB_ATTRIB_RAID1) { | |
1262 | dprintf("\t\tMPB_ATTRIB_RAID1\n"); | |
1263 | not_supported ^= MPB_ATTRIB_RAID1; | |
1264 | } | |
1265 | if (not_supported & MPB_ATTRIB_RAID10) { | |
1266 | dprintf("\t\tMPB_ATTRIB_RAID10\n"); | |
1267 | not_supported ^= MPB_ATTRIB_RAID10; | |
1268 | } | |
1269 | if (not_supported & MPB_ATTRIB_RAID1E) { | |
1270 | dprintf("\t\tMPB_ATTRIB_RAID1E\n"); | |
1271 | not_supported ^= MPB_ATTRIB_RAID1E; | |
1272 | } | |
1273 | if (not_supported & MPB_ATTRIB_RAID5) { | |
1274 | dprintf("\t\tMPB_ATTRIB_RAID5\n"); | |
1275 | not_supported ^= MPB_ATTRIB_RAID5; | |
1276 | } | |
1277 | if (not_supported & MPB_ATTRIB_RAIDCNG) { | |
1278 | dprintf("\t\tMPB_ATTRIB_RAIDCNG\n"); | |
1279 | not_supported ^= MPB_ATTRIB_RAIDCNG; | |
1280 | } | |
1281 | if (not_supported & MPB_ATTRIB_BBM) { | |
1282 | dprintf("\t\tMPB_ATTRIB_BBM\n"); | |
1283 | not_supported ^= MPB_ATTRIB_BBM; | |
1284 | } | |
1285 | if (not_supported & MPB_ATTRIB_CHECKSUM_VERIFY) { | |
1286 | dprintf("\t\tMPB_ATTRIB_CHECKSUM_VERIFY (== MPB_ATTRIB_LEGACY)\n"); | |
1287 | not_supported ^= MPB_ATTRIB_CHECKSUM_VERIFY; | |
1288 | } | |
1289 | if (not_supported & MPB_ATTRIB_EXP_STRIPE_SIZE) { | |
1290 | dprintf("\t\tMPB_ATTRIB_EXP_STRIP_SIZE\n"); | |
1291 | not_supported ^= MPB_ATTRIB_EXP_STRIPE_SIZE; | |
1292 | } | |
1293 | if (not_supported & MPB_ATTRIB_2TB_DISK) { | |
1294 | dprintf("\t\tMPB_ATTRIB_2TB_DISK\n"); | |
1295 | not_supported ^= MPB_ATTRIB_2TB_DISK; | |
1296 | } | |
1297 | if (not_supported & MPB_ATTRIB_NEVER_USE2) { | |
1298 | dprintf("\t\tMPB_ATTRIB_NEVER_USE2\n"); | |
1299 | not_supported ^= MPB_ATTRIB_NEVER_USE2; | |
1300 | } | |
1301 | if (not_supported & MPB_ATTRIB_NEVER_USE) { | |
1302 | dprintf("\t\tMPB_ATTRIB_NEVER_USE\n"); | |
1303 | not_supported ^= MPB_ATTRIB_NEVER_USE; | |
1304 | } | |
1305 | ||
1306 | if (not_supported) | |
1307 | dprintf(Name "(IMSM): Unknown attributes : %x\n", not_supported); | |
1308 | ||
1309 | ret_val = 0; | |
1310 | } | |
1311 | ||
1312 | return ret_val; | |
1313 | } | |
1314 | ||
1315 | #ifndef MDASSEMBLE | |
1316 | static void getinfo_super_imsm(struct supertype *st, struct mdinfo *info, char *map); | |
1317 | ||
1318 | static void examine_super_imsm(struct supertype *st, char *homehost) | |
1319 | { | |
1320 | struct intel_super *super = st->sb; | |
1321 | struct imsm_super *mpb = super->anchor; | |
1322 | char str[MAX_SIGNATURE_LENGTH]; | |
1323 | int i; | |
1324 | struct mdinfo info; | |
1325 | char nbuf[64]; | |
1326 | __u32 sum; | |
1327 | __u32 reserved = imsm_reserved_sectors(super, super->disks); | |
1328 | struct dl *dl; | |
1329 | ||
1330 | snprintf(str, MPB_SIG_LEN, "%s", mpb->sig); | |
1331 | printf(" Magic : %s\n", str); | |
1332 | snprintf(str, strlen(MPB_VERSION_RAID0), "%s", get_imsm_version(mpb)); | |
1333 | printf(" Version : %s\n", get_imsm_version(mpb)); | |
1334 | printf(" Orig Family : %08x\n", __le32_to_cpu(mpb->orig_family_num)); | |
1335 | printf(" Family : %08x\n", __le32_to_cpu(mpb->family_num)); | |
1336 | printf(" Generation : %08x\n", __le32_to_cpu(mpb->generation_num)); | |
1337 | printf(" Attributes : "); | |
1338 | if (imsm_check_attributes(mpb->attributes)) | |
1339 | printf("All supported\n"); | |
1340 | else | |
1341 | printf("not supported\n"); | |
1342 | getinfo_super_imsm(st, &info, NULL); | |
1343 | fname_from_uuid(st, &info, nbuf, ':'); | |
1344 | printf(" UUID : %s\n", nbuf + 5); | |
1345 | sum = __le32_to_cpu(mpb->check_sum); | |
1346 | printf(" Checksum : %08x %s\n", sum, | |
1347 | __gen_imsm_checksum(mpb) == sum ? "correct" : "incorrect"); | |
1348 | printf(" MPB Sectors : %d\n", mpb_sectors(mpb)); | |
1349 | printf(" Disks : %d\n", mpb->num_disks); | |
1350 | printf(" RAID Devices : %d\n", mpb->num_raid_devs); | |
1351 | print_imsm_disk(__get_imsm_disk(mpb, super->disks->index), super->disks->index, reserved); | |
1352 | if (super->bbm_log) { | |
1353 | struct bbm_log *log = super->bbm_log; | |
1354 | ||
1355 | printf("\n"); | |
1356 | printf("Bad Block Management Log:\n"); | |
1357 | printf(" Log Size : %d\n", __le32_to_cpu(mpb->bbm_log_size)); | |
1358 | printf(" Signature : %x\n", __le32_to_cpu(log->signature)); | |
1359 | printf(" Entry Count : %d\n", __le32_to_cpu(log->entry_count)); | |
1360 | printf(" Spare Blocks : %d\n", __le32_to_cpu(log->reserved_spare_block_count)); | |
1361 | printf(" First Spare : %llx\n", | |
1362 | (unsigned long long) __le64_to_cpu(log->first_spare_lba)); | |
1363 | } | |
1364 | for (i = 0; i < mpb->num_raid_devs; i++) { | |
1365 | struct mdinfo info; | |
1366 | struct imsm_dev *dev = __get_imsm_dev(mpb, i); | |
1367 | ||
1368 | super->current_vol = i; | |
1369 | getinfo_super_imsm(st, &info, NULL); | |
1370 | fname_from_uuid(st, &info, nbuf, ':'); | |
1371 | print_imsm_dev(super, dev, nbuf + 5, super->disks->index); | |
1372 | } | |
1373 | for (i = 0; i < mpb->num_disks; i++) { | |
1374 | if (i == super->disks->index) | |
1375 | continue; | |
1376 | print_imsm_disk(__get_imsm_disk(mpb, i), i, reserved); | |
1377 | } | |
1378 | ||
1379 | for (dl = super->disks; dl; dl = dl->next) | |
1380 | if (dl->index == -1) | |
1381 | print_imsm_disk(&dl->disk, -1, reserved); | |
1382 | ||
1383 | examine_migr_rec_imsm(super); | |
1384 | } | |
1385 | ||
1386 | static void brief_examine_super_imsm(struct supertype *st, int verbose) | |
1387 | { | |
1388 | /* We just write a generic IMSM ARRAY entry */ | |
1389 | struct mdinfo info; | |
1390 | char nbuf[64]; | |
1391 | struct intel_super *super = st->sb; | |
1392 | ||
1393 | if (!super->anchor->num_raid_devs) { | |
1394 | printf("ARRAY metadata=imsm\n"); | |
1395 | return; | |
1396 | } | |
1397 | ||
1398 | getinfo_super_imsm(st, &info, NULL); | |
1399 | fname_from_uuid(st, &info, nbuf, ':'); | |
1400 | printf("ARRAY metadata=imsm UUID=%s\n", nbuf + 5); | |
1401 | } | |
1402 | ||
1403 | static void brief_examine_subarrays_imsm(struct supertype *st, int verbose) | |
1404 | { | |
1405 | /* We just write a generic IMSM ARRAY entry */ | |
1406 | struct mdinfo info; | |
1407 | char nbuf[64]; | |
1408 | char nbuf1[64]; | |
1409 | struct intel_super *super = st->sb; | |
1410 | int i; | |
1411 | ||
1412 | if (!super->anchor->num_raid_devs) | |
1413 | return; | |
1414 | ||
1415 | getinfo_super_imsm(st, &info, NULL); | |
1416 | fname_from_uuid(st, &info, nbuf, ':'); | |
1417 | for (i = 0; i < super->anchor->num_raid_devs; i++) { | |
1418 | struct imsm_dev *dev = get_imsm_dev(super, i); | |
1419 | ||
1420 | super->current_vol = i; | |
1421 | getinfo_super_imsm(st, &info, NULL); | |
1422 | fname_from_uuid(st, &info, nbuf1, ':'); | |
1423 | printf("ARRAY /dev/md/%.16s container=%s member=%d UUID=%s\n", | |
1424 | dev->volume, nbuf + 5, i, nbuf1 + 5); | |
1425 | } | |
1426 | } | |
1427 | ||
1428 | static void export_examine_super_imsm(struct supertype *st) | |
1429 | { | |
1430 | struct intel_super *super = st->sb; | |
1431 | struct imsm_super *mpb = super->anchor; | |
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("MD_METADATA=imsm\n"); | |
1438 | printf("MD_LEVEL=container\n"); | |
1439 | printf("MD_UUID=%s\n", nbuf+5); | |
1440 | printf("MD_DEVICES=%u\n", mpb->num_disks); | |
1441 | } | |
1442 | ||
1443 | static void detail_super_imsm(struct supertype *st, char *homehost) | |
1444 | { | |
1445 | struct mdinfo info; | |
1446 | char nbuf[64]; | |
1447 | ||
1448 | getinfo_super_imsm(st, &info, NULL); | |
1449 | fname_from_uuid(st, &info, nbuf, ':'); | |
1450 | printf("\n UUID : %s\n", nbuf + 5); | |
1451 | } | |
1452 | ||
1453 | static void brief_detail_super_imsm(struct supertype *st) | |
1454 | { | |
1455 | struct mdinfo info; | |
1456 | char nbuf[64]; | |
1457 | getinfo_super_imsm(st, &info, NULL); | |
1458 | fname_from_uuid(st, &info, nbuf, ':'); | |
1459 | printf(" UUID=%s", nbuf + 5); | |
1460 | } | |
1461 | ||
1462 | static int imsm_read_serial(int fd, char *devname, __u8 *serial); | |
1463 | static void fd2devname(int fd, char *name); | |
1464 | ||
1465 | static int ahci_enumerate_ports(const char *hba_path, int port_count, int host_base, int verbose) | |
1466 | { | |
1467 | /* dump an unsorted list of devices attached to AHCI Intel storage | |
1468 | * controller, as well as non-connected ports | |
1469 | */ | |
1470 | int hba_len = strlen(hba_path) + 1; | |
1471 | struct dirent *ent; | |
1472 | DIR *dir; | |
1473 | char *path = NULL; | |
1474 | int err = 0; | |
1475 | unsigned long port_mask = (1 << port_count) - 1; | |
1476 | ||
1477 | if (port_count > (int)sizeof(port_mask) * 8) { | |
1478 | if (verbose) | |
1479 | fprintf(stderr, Name ": port_count %d out of range\n", port_count); | |
1480 | return 2; | |
1481 | } | |
1482 | ||
1483 | /* scroll through /sys/dev/block looking for devices attached to | |
1484 | * this hba | |
1485 | */ | |
1486 | dir = opendir("/sys/dev/block"); | |
1487 | for (ent = dir ? readdir(dir) : NULL; ent; ent = readdir(dir)) { | |
1488 | int fd; | |
1489 | char model[64]; | |
1490 | char vendor[64]; | |
1491 | char buf[1024]; | |
1492 | int major, minor; | |
1493 | char *device; | |
1494 | char *c; | |
1495 | int port; | |
1496 | int type; | |
1497 | ||
1498 | if (sscanf(ent->d_name, "%d:%d", &major, &minor) != 2) | |
1499 | continue; | |
1500 | path = devt_to_devpath(makedev(major, minor)); | |
1501 | if (!path) | |
1502 | continue; | |
1503 | if (!path_attached_to_hba(path, hba_path)) { | |
1504 | free(path); | |
1505 | path = NULL; | |
1506 | continue; | |
1507 | } | |
1508 | ||
1509 | /* retrieve the scsi device type */ | |
1510 | if (asprintf(&device, "/sys/dev/block/%d:%d/device/xxxxxxx", major, minor) < 0) { | |
1511 | if (verbose) | |
1512 | fprintf(stderr, Name ": failed to allocate 'device'\n"); | |
1513 | err = 2; | |
1514 | break; | |
1515 | } | |
1516 | sprintf(device, "/sys/dev/block/%d:%d/device/type", major, minor); | |
1517 | if (load_sys(device, buf) != 0) { | |
1518 | if (verbose) | |
1519 | fprintf(stderr, Name ": failed to read device type for %s\n", | |
1520 | path); | |
1521 | err = 2; | |
1522 | free(device); | |
1523 | break; | |
1524 | } | |
1525 | type = strtoul(buf, NULL, 10); | |
1526 | ||
1527 | /* if it's not a disk print the vendor and model */ | |
1528 | if (!(type == 0 || type == 7 || type == 14)) { | |
1529 | vendor[0] = '\0'; | |
1530 | model[0] = '\0'; | |
1531 | sprintf(device, "/sys/dev/block/%d:%d/device/vendor", major, minor); | |
1532 | if (load_sys(device, buf) == 0) { | |
1533 | strncpy(vendor, buf, sizeof(vendor)); | |
1534 | vendor[sizeof(vendor) - 1] = '\0'; | |
1535 | c = (char *) &vendor[sizeof(vendor) - 1]; | |
1536 | while (isspace(*c) || *c == '\0') | |
1537 | *c-- = '\0'; | |
1538 | ||
1539 | } | |
1540 | sprintf(device, "/sys/dev/block/%d:%d/device/model", major, minor); | |
1541 | if (load_sys(device, buf) == 0) { | |
1542 | strncpy(model, buf, sizeof(model)); | |
1543 | model[sizeof(model) - 1] = '\0'; | |
1544 | c = (char *) &model[sizeof(model) - 1]; | |
1545 | while (isspace(*c) || *c == '\0') | |
1546 | *c-- = '\0'; | |
1547 | } | |
1548 | ||
1549 | if (vendor[0] && model[0]) | |
1550 | sprintf(buf, "%.64s %.64s", vendor, model); | |
1551 | else | |
1552 | switch (type) { /* numbers from hald/linux/device.c */ | |
1553 | case 1: sprintf(buf, "tape"); break; | |
1554 | case 2: sprintf(buf, "printer"); break; | |
1555 | case 3: sprintf(buf, "processor"); break; | |
1556 | case 4: | |
1557 | case 5: sprintf(buf, "cdrom"); break; | |
1558 | case 6: sprintf(buf, "scanner"); break; | |
1559 | case 8: sprintf(buf, "media_changer"); break; | |
1560 | case 9: sprintf(buf, "comm"); break; | |
1561 | case 12: sprintf(buf, "raid"); break; | |
1562 | default: sprintf(buf, "unknown"); | |
1563 | } | |
1564 | } else | |
1565 | buf[0] = '\0'; | |
1566 | free(device); | |
1567 | ||
1568 | /* chop device path to 'host%d' and calculate the port number */ | |
1569 | c = strchr(&path[hba_len], '/'); | |
1570 | if (!c) { | |
1571 | if (verbose) | |
1572 | fprintf(stderr, Name ": %s - invalid path name\n", path + hba_len); | |
1573 | err = 2; | |
1574 | break; | |
1575 | } | |
1576 | *c = '\0'; | |
1577 | if (sscanf(&path[hba_len], "host%d", &port) == 1) | |
1578 | port -= host_base; | |
1579 | else { | |
1580 | if (verbose) { | |
1581 | *c = '/'; /* repair the full string */ | |
1582 | fprintf(stderr, Name ": failed to determine port number for %s\n", | |
1583 | path); | |
1584 | } | |
1585 | err = 2; | |
1586 | break; | |
1587 | } | |
1588 | ||
1589 | /* mark this port as used */ | |
1590 | port_mask &= ~(1 << port); | |
1591 | ||
1592 | /* print out the device information */ | |
1593 | if (buf[0]) { | |
1594 | printf(" Port%d : - non-disk device (%s) -\n", port, buf); | |
1595 | continue; | |
1596 | } | |
1597 | ||
1598 | fd = dev_open(ent->d_name, O_RDONLY); | |
1599 | if (fd < 0) | |
1600 | printf(" Port%d : - disk info unavailable -\n", port); | |
1601 | else { | |
1602 | fd2devname(fd, buf); | |
1603 | printf(" Port%d : %s", port, buf); | |
1604 | if (imsm_read_serial(fd, NULL, (__u8 *) buf) == 0) | |
1605 | printf(" (%.*s)\n", MAX_RAID_SERIAL_LEN, buf); | |
1606 | else | |
1607 | printf(" ()\n"); | |
1608 | close(fd); | |
1609 | } | |
1610 | free(path); | |
1611 | path = NULL; | |
1612 | } | |
1613 | if (path) | |
1614 | free(path); | |
1615 | if (dir) | |
1616 | closedir(dir); | |
1617 | if (err == 0) { | |
1618 | int i; | |
1619 | ||
1620 | for (i = 0; i < port_count; i++) | |
1621 | if (port_mask & (1 << i)) | |
1622 | printf(" Port%d : - no device attached -\n", i); | |
1623 | } | |
1624 | ||
1625 | return err; | |
1626 | } | |
1627 | ||
1628 | static void print_found_intel_controllers(struct sys_dev *elem) | |
1629 | { | |
1630 | for (; elem; elem = elem->next) { | |
1631 | fprintf(stderr, Name ": found Intel(R) "); | |
1632 | if (elem->type == SYS_DEV_SATA) | |
1633 | fprintf(stderr, "SATA "); | |
1634 | else if (elem->type == SYS_DEV_SAS) | |
1635 | fprintf(stderr, "SAS "); | |
1636 | fprintf(stderr, "RAID controller"); | |
1637 | if (elem->pci_id) | |
1638 | fprintf(stderr, " at %s", elem->pci_id); | |
1639 | fprintf(stderr, ".\n"); | |
1640 | } | |
1641 | fflush(stderr); | |
1642 | } | |
1643 | ||
1644 | static int ahci_get_port_count(const char *hba_path, int *port_count) | |
1645 | { | |
1646 | struct dirent *ent; | |
1647 | DIR *dir; | |
1648 | int host_base = -1; | |
1649 | ||
1650 | *port_count = 0; | |
1651 | if ((dir = opendir(hba_path)) == NULL) | |
1652 | return -1; | |
1653 | ||
1654 | for (ent = readdir(dir); ent; ent = readdir(dir)) { | |
1655 | int host; | |
1656 | ||
1657 | if (sscanf(ent->d_name, "host%d", &host) != 1) | |
1658 | continue; | |
1659 | if (*port_count == 0) | |
1660 | host_base = host; | |
1661 | else if (host < host_base) | |
1662 | host_base = host; | |
1663 | ||
1664 | if (host + 1 > *port_count + host_base) | |
1665 | *port_count = host + 1 - host_base; | |
1666 | } | |
1667 | closedir(dir); | |
1668 | return host_base; | |
1669 | } | |
1670 | ||
1671 | static void print_imsm_capability(const struct imsm_orom *orom) | |
1672 | { | |
1673 | printf(" Platform : Intel(R) Matrix Storage Manager\n"); | |
1674 | printf(" Version : %d.%d.%d.%d\n", orom->major_ver, orom->minor_ver, | |
1675 | orom->hotfix_ver, orom->build); | |
1676 | printf(" RAID Levels :%s%s%s%s%s\n", | |
1677 | imsm_orom_has_raid0(orom) ? " raid0" : "", | |
1678 | imsm_orom_has_raid1(orom) ? " raid1" : "", | |
1679 | imsm_orom_has_raid1e(orom) ? " raid1e" : "", | |
1680 | imsm_orom_has_raid10(orom) ? " raid10" : "", | |
1681 | imsm_orom_has_raid5(orom) ? " raid5" : ""); | |
1682 | printf(" Chunk Sizes :%s%s%s%s%s%s%s%s%s%s%s%s%s%s%s%s\n", | |
1683 | imsm_orom_has_chunk(orom, 2) ? " 2k" : "", | |
1684 | imsm_orom_has_chunk(orom, 4) ? " 4k" : "", | |
1685 | imsm_orom_has_chunk(orom, 8) ? " 8k" : "", | |
1686 | imsm_orom_has_chunk(orom, 16) ? " 16k" : "", | |
1687 | imsm_orom_has_chunk(orom, 32) ? " 32k" : "", | |
1688 | imsm_orom_has_chunk(orom, 64) ? " 64k" : "", | |
1689 | imsm_orom_has_chunk(orom, 128) ? " 128k" : "", | |
1690 | imsm_orom_has_chunk(orom, 256) ? " 256k" : "", | |
1691 | imsm_orom_has_chunk(orom, 512) ? " 512k" : "", | |
1692 | imsm_orom_has_chunk(orom, 1024*1) ? " 1M" : "", | |
1693 | imsm_orom_has_chunk(orom, 1024*2) ? " 2M" : "", | |
1694 | imsm_orom_has_chunk(orom, 1024*4) ? " 4M" : "", | |
1695 | imsm_orom_has_chunk(orom, 1024*8) ? " 8M" : "", | |
1696 | imsm_orom_has_chunk(orom, 1024*16) ? " 16M" : "", | |
1697 | imsm_orom_has_chunk(orom, 1024*32) ? " 32M" : "", | |
1698 | imsm_orom_has_chunk(orom, 1024*64) ? " 64M" : ""); | |
1699 | printf(" Max Disks : %d\n", orom->tds); | |
1700 | printf(" Max Volumes : %d\n", orom->vpa); | |
1701 | return; | |
1702 | } | |
1703 | ||
1704 | static int detail_platform_imsm(int verbose, int enumerate_only) | |
1705 | { | |
1706 | /* There are two components to imsm platform support, the ahci SATA | |
1707 | * controller and the option-rom. To find the SATA controller we | |
1708 | * simply look in /sys/bus/pci/drivers/ahci to see if an ahci | |
1709 | * controller with the Intel vendor id is present. This approach | |
1710 | * allows mdadm to leverage the kernel's ahci detection logic, with the | |
1711 | * caveat that if ahci.ko is not loaded mdadm will not be able to | |
1712 | * detect platform raid capabilities. The option-rom resides in a | |
1713 | * platform "Adapter ROM". We scan for its signature to retrieve the | |
1714 | * platform capabilities. If raid support is disabled in the BIOS the | |
1715 | * option-rom capability structure will not be available. | |
1716 | */ | |
1717 | const struct imsm_orom *orom; | |
1718 | struct sys_dev *list, *hba; | |
1719 | int host_base = 0; | |
1720 | int port_count = 0; | |
1721 | int result=0; | |
1722 | ||
1723 | if (enumerate_only) { | |
1724 | if (check_env("IMSM_NO_PLATFORM")) | |
1725 | return 0; | |
1726 | list = find_intel_devices(); | |
1727 | if (!list) | |
1728 | return 2; | |
1729 | for (hba = list; hba; hba = hba->next) { | |
1730 | orom = find_imsm_capability(hba->type); | |
1731 | if (!orom) { | |
1732 | result = 2; | |
1733 | break; | |
1734 | } | |
1735 | } | |
1736 | free_sys_dev(&list); | |
1737 | return result; | |
1738 | } | |
1739 | ||
1740 | list = find_intel_devices(); | |
1741 | if (!list) { | |
1742 | if (verbose) | |
1743 | fprintf(stderr, Name ": no active Intel(R) RAID " | |
1744 | "controller found.\n"); | |
1745 | free_sys_dev(&list); | |
1746 | return 2; | |
1747 | } else if (verbose) | |
1748 | print_found_intel_controllers(list); | |
1749 | ||
1750 | for (hba = list; hba; hba = hba->next) { | |
1751 | orom = find_imsm_capability(hba->type); | |
1752 | if (!orom) | |
1753 | fprintf(stderr, Name ": imsm capabilities not found for controller: %s (type %s)\n", | |
1754 | hba->path, get_sys_dev_type(hba->type)); | |
1755 | else | |
1756 | print_imsm_capability(orom); | |
1757 | } | |
1758 | ||
1759 | for (hba = list; hba; hba = hba->next) { | |
1760 | printf(" I/O Controller : %s (%s)\n", | |
1761 | hba->path, get_sys_dev_type(hba->type)); | |
1762 | ||
1763 | if (hba->type == SYS_DEV_SATA) { | |
1764 | host_base = ahci_get_port_count(hba->path, &port_count); | |
1765 | if (ahci_enumerate_ports(hba->path, port_count, host_base, verbose)) { | |
1766 | if (verbose) | |
1767 | fprintf(stderr, Name ": failed to enumerate " | |
1768 | "ports on SATA controller at %s.", hba->pci_id); | |
1769 | result |= 2; | |
1770 | } | |
1771 | } | |
1772 | } | |
1773 | ||
1774 | free_sys_dev(&list); | |
1775 | return result; | |
1776 | } | |
1777 | #endif | |
1778 | ||
1779 | static int match_home_imsm(struct supertype *st, char *homehost) | |
1780 | { | |
1781 | /* the imsm metadata format does not specify any host | |
1782 | * identification information. We return -1 since we can never | |
1783 | * confirm nor deny whether a given array is "meant" for this | |
1784 | * host. We rely on compare_super and the 'family_num' fields to | |
1785 | * exclude member disks that do not belong, and we rely on | |
1786 | * mdadm.conf to specify the arrays that should be assembled. | |
1787 | * Auto-assembly may still pick up "foreign" arrays. | |
1788 | */ | |
1789 | ||
1790 | return -1; | |
1791 | } | |
1792 | ||
1793 | static void uuid_from_super_imsm(struct supertype *st, int uuid[4]) | |
1794 | { | |
1795 | /* The uuid returned here is used for: | |
1796 | * uuid to put into bitmap file (Create, Grow) | |
1797 | * uuid for backup header when saving critical section (Grow) | |
1798 | * comparing uuids when re-adding a device into an array | |
1799 | * In these cases the uuid required is that of the data-array, | |
1800 | * not the device-set. | |
1801 | * uuid to recognise same set when adding a missing device back | |
1802 | * to an array. This is a uuid for the device-set. | |
1803 | * | |
1804 | * For each of these we can make do with a truncated | |
1805 | * or hashed uuid rather than the original, as long as | |
1806 | * everyone agrees. | |
1807 | * In each case the uuid required is that of the data-array, | |
1808 | * not the device-set. | |
1809 | */ | |
1810 | /* imsm does not track uuid's so we synthesis one using sha1 on | |
1811 | * - The signature (Which is constant for all imsm array, but no matter) | |
1812 | * - the orig_family_num of the container | |
1813 | * - the index number of the volume | |
1814 | * - the 'serial' number of the volume. | |
1815 | * Hopefully these are all constant. | |
1816 | */ | |
1817 | struct intel_super *super = st->sb; | |
1818 | ||
1819 | char buf[20]; | |
1820 | struct sha1_ctx ctx; | |
1821 | struct imsm_dev *dev = NULL; | |
1822 | __u32 family_num; | |
1823 | ||
1824 | /* some mdadm versions failed to set ->orig_family_num, in which | |
1825 | * case fall back to ->family_num. orig_family_num will be | |
1826 | * fixed up with the first metadata update. | |
1827 | */ | |
1828 | family_num = super->anchor->orig_family_num; | |
1829 | if (family_num == 0) | |
1830 | family_num = super->anchor->family_num; | |
1831 | sha1_init_ctx(&ctx); | |
1832 | sha1_process_bytes(super->anchor->sig, MPB_SIG_LEN, &ctx); | |
1833 | sha1_process_bytes(&family_num, sizeof(__u32), &ctx); | |
1834 | if (super->current_vol >= 0) | |
1835 | dev = get_imsm_dev(super, super->current_vol); | |
1836 | if (dev) { | |
1837 | __u32 vol = super->current_vol; | |
1838 | sha1_process_bytes(&vol, sizeof(vol), &ctx); | |
1839 | sha1_process_bytes(dev->volume, MAX_RAID_SERIAL_LEN, &ctx); | |
1840 | } | |
1841 | sha1_finish_ctx(&ctx, buf); | |
1842 | memcpy(uuid, buf, 4*4); | |
1843 | } | |
1844 | ||
1845 | #if 0 | |
1846 | static void | |
1847 | get_imsm_numerical_version(struct imsm_super *mpb, int *m, int *p) | |
1848 | { | |
1849 | __u8 *v = get_imsm_version(mpb); | |
1850 | __u8 *end = mpb->sig + MAX_SIGNATURE_LENGTH; | |
1851 | char major[] = { 0, 0, 0 }; | |
1852 | char minor[] = { 0 ,0, 0 }; | |
1853 | char patch[] = { 0, 0, 0 }; | |
1854 | char *ver_parse[] = { major, minor, patch }; | |
1855 | int i, j; | |
1856 | ||
1857 | i = j = 0; | |
1858 | while (*v != '\0' && v < end) { | |
1859 | if (*v != '.' && j < 2) | |
1860 | ver_parse[i][j++] = *v; | |
1861 | else { | |
1862 | i++; | |
1863 | j = 0; | |
1864 | } | |
1865 | v++; | |
1866 | } | |
1867 | ||
1868 | *m = strtol(minor, NULL, 0); | |
1869 | *p = strtol(patch, NULL, 0); | |
1870 | } | |
1871 | #endif | |
1872 | ||
1873 | static __u32 migr_strip_blocks_resync(struct imsm_dev *dev) | |
1874 | { | |
1875 | /* migr_strip_size when repairing or initializing parity */ | |
1876 | struct imsm_map *map = get_imsm_map(dev, MAP_0); | |
1877 | __u32 chunk = __le32_to_cpu(map->blocks_per_strip); | |
1878 | ||
1879 | switch (get_imsm_raid_level(map)) { | |
1880 | case 5: | |
1881 | case 10: | |
1882 | return chunk; | |
1883 | default: | |
1884 | return 128*1024 >> 9; | |
1885 | } | |
1886 | } | |
1887 | ||
1888 | static __u32 migr_strip_blocks_rebuild(struct imsm_dev *dev) | |
1889 | { | |
1890 | /* migr_strip_size when rebuilding a degraded disk, no idea why | |
1891 | * this is different than migr_strip_size_resync(), but it's good | |
1892 | * to be compatible | |
1893 | */ | |
1894 | struct imsm_map *map = get_imsm_map(dev, MAP_1); | |
1895 | __u32 chunk = __le32_to_cpu(map->blocks_per_strip); | |
1896 | ||
1897 | switch (get_imsm_raid_level(map)) { | |
1898 | case 1: | |
1899 | case 10: | |
1900 | if (map->num_members % map->num_domains == 0) | |
1901 | return 128*1024 >> 9; | |
1902 | else | |
1903 | return chunk; | |
1904 | case 5: | |
1905 | return max((__u32) 64*1024 >> 9, chunk); | |
1906 | default: | |
1907 | return 128*1024 >> 9; | |
1908 | } | |
1909 | } | |
1910 | ||
1911 | static __u32 num_stripes_per_unit_resync(struct imsm_dev *dev) | |
1912 | { | |
1913 | struct imsm_map *lo = get_imsm_map(dev, MAP_0); | |
1914 | struct imsm_map *hi = get_imsm_map(dev, MAP_1); | |
1915 | __u32 lo_chunk = __le32_to_cpu(lo->blocks_per_strip); | |
1916 | __u32 hi_chunk = __le32_to_cpu(hi->blocks_per_strip); | |
1917 | ||
1918 | return max((__u32) 1, hi_chunk / lo_chunk); | |
1919 | } | |
1920 | ||
1921 | static __u32 num_stripes_per_unit_rebuild(struct imsm_dev *dev) | |
1922 | { | |
1923 | struct imsm_map *lo = get_imsm_map(dev, MAP_0); | |
1924 | int level = get_imsm_raid_level(lo); | |
1925 | ||
1926 | if (level == 1 || level == 10) { | |
1927 | struct imsm_map *hi = get_imsm_map(dev, MAP_1); | |
1928 | ||
1929 | return hi->num_domains; | |
1930 | } else | |
1931 | return num_stripes_per_unit_resync(dev); | |
1932 | } | |
1933 | ||
1934 | static __u8 imsm_num_data_members(struct imsm_dev *dev, int second_map) | |
1935 | { | |
1936 | /* named 'imsm_' because raid0, raid1 and raid10 | |
1937 | * counter-intuitively have the same number of data disks | |
1938 | */ | |
1939 | struct imsm_map *map = get_imsm_map(dev, second_map); | |
1940 | ||
1941 | switch (get_imsm_raid_level(map)) { | |
1942 | case 0: | |
1943 | case 1: | |
1944 | case 10: | |
1945 | return map->num_members; | |
1946 | case 5: | |
1947 | return map->num_members - 1; | |
1948 | default: | |
1949 | dprintf("%s: unsupported raid level\n", __func__); | |
1950 | return 0; | |
1951 | } | |
1952 | } | |
1953 | ||
1954 | static __u32 parity_segment_depth(struct imsm_dev *dev) | |
1955 | { | |
1956 | struct imsm_map *map = get_imsm_map(dev, MAP_0); | |
1957 | __u32 chunk = __le32_to_cpu(map->blocks_per_strip); | |
1958 | ||
1959 | switch(get_imsm_raid_level(map)) { | |
1960 | case 1: | |
1961 | case 10: | |
1962 | return chunk * map->num_domains; | |
1963 | case 5: | |
1964 | return chunk * map->num_members; | |
1965 | default: | |
1966 | return chunk; | |
1967 | } | |
1968 | } | |
1969 | ||
1970 | static __u32 map_migr_block(struct imsm_dev *dev, __u32 block) | |
1971 | { | |
1972 | struct imsm_map *map = get_imsm_map(dev, MAP_1); | |
1973 | __u32 chunk = __le32_to_cpu(map->blocks_per_strip); | |
1974 | __u32 strip = block / chunk; | |
1975 | ||
1976 | switch (get_imsm_raid_level(map)) { | |
1977 | case 1: | |
1978 | case 10: { | |
1979 | __u32 vol_strip = (strip * map->num_domains) + 1; | |
1980 | __u32 vol_stripe = vol_strip / map->num_members; | |
1981 | ||
1982 | return vol_stripe * chunk + block % chunk; | |
1983 | } case 5: { | |
1984 | __u32 stripe = strip / (map->num_members - 1); | |
1985 | ||
1986 | return stripe * chunk + block % chunk; | |
1987 | } | |
1988 | default: | |
1989 | return 0; | |
1990 | } | |
1991 | } | |
1992 | ||
1993 | static __u64 blocks_per_migr_unit(struct intel_super *super, | |
1994 | struct imsm_dev *dev) | |
1995 | { | |
1996 | /* calculate the conversion factor between per member 'blocks' | |
1997 | * (md/{resync,rebuild}_start) and imsm migration units, return | |
1998 | * 0 for the 'not migrating' and 'unsupported migration' cases | |
1999 | */ | |
2000 | if (!dev->vol.migr_state) | |
2001 | return 0; | |
2002 | ||
2003 | switch (migr_type(dev)) { | |
2004 | case MIGR_GEN_MIGR: { | |
2005 | struct migr_record *migr_rec = super->migr_rec; | |
2006 | return __le32_to_cpu(migr_rec->blocks_per_unit); | |
2007 | } | |
2008 | case MIGR_VERIFY: | |
2009 | case MIGR_REPAIR: | |
2010 | case MIGR_INIT: { | |
2011 | struct imsm_map *map = get_imsm_map(dev, MAP_0); | |
2012 | __u32 stripes_per_unit; | |
2013 | __u32 blocks_per_unit; | |
2014 | __u32 parity_depth; | |
2015 | __u32 migr_chunk; | |
2016 | __u32 block_map; | |
2017 | __u32 block_rel; | |
2018 | __u32 segment; | |
2019 | __u32 stripe; | |
2020 | __u8 disks; | |
2021 | ||
2022 | /* yes, this is really the translation of migr_units to | |
2023 | * per-member blocks in the 'resync' case | |
2024 | */ | |
2025 | stripes_per_unit = num_stripes_per_unit_resync(dev); | |
2026 | migr_chunk = migr_strip_blocks_resync(dev); | |
2027 | disks = imsm_num_data_members(dev, MAP_0); | |
2028 | blocks_per_unit = stripes_per_unit * migr_chunk * disks; | |
2029 | stripe = __le16_to_cpu(map->blocks_per_strip) * disks; | |
2030 | segment = blocks_per_unit / stripe; | |
2031 | block_rel = blocks_per_unit - segment * stripe; | |
2032 | parity_depth = parity_segment_depth(dev); | |
2033 | block_map = map_migr_block(dev, block_rel); | |
2034 | return block_map + parity_depth * segment; | |
2035 | } | |
2036 | case MIGR_REBUILD: { | |
2037 | __u32 stripes_per_unit; | |
2038 | __u32 migr_chunk; | |
2039 | ||
2040 | stripes_per_unit = num_stripes_per_unit_rebuild(dev); | |
2041 | migr_chunk = migr_strip_blocks_rebuild(dev); | |
2042 | return migr_chunk * stripes_per_unit; | |
2043 | } | |
2044 | case MIGR_STATE_CHANGE: | |
2045 | default: | |
2046 | return 0; | |
2047 | } | |
2048 | } | |
2049 | ||
2050 | static int imsm_level_to_layout(int level) | |
2051 | { | |
2052 | switch (level) { | |
2053 | case 0: | |
2054 | case 1: | |
2055 | return 0; | |
2056 | case 5: | |
2057 | case 6: | |
2058 | return ALGORITHM_LEFT_ASYMMETRIC; | |
2059 | case 10: | |
2060 | return 0x102; | |
2061 | } | |
2062 | return UnSet; | |
2063 | } | |
2064 | ||
2065 | /******************************************************************************* | |
2066 | * Function: read_imsm_migr_rec | |
2067 | * Description: Function reads imsm migration record from last sector of disk | |
2068 | * Parameters: | |
2069 | * fd : disk descriptor | |
2070 | * super : metadata info | |
2071 | * Returns: | |
2072 | * 0 : success, | |
2073 | * -1 : fail | |
2074 | ******************************************************************************/ | |
2075 | static int read_imsm_migr_rec(int fd, struct intel_super *super) | |
2076 | { | |
2077 | int ret_val = -1; | |
2078 | unsigned long long dsize; | |
2079 | ||
2080 | get_dev_size(fd, NULL, &dsize); | |
2081 | if (lseek64(fd, dsize - MIGR_REC_POSITION, SEEK_SET) < 0) { | |
2082 | fprintf(stderr, | |
2083 | Name ": Cannot seek to anchor block: %s\n", | |
2084 | strerror(errno)); | |
2085 | goto out; | |
2086 | } | |
2087 | if (read(fd, super->migr_rec_buf, MIGR_REC_BUF_SIZE) != | |
2088 | MIGR_REC_BUF_SIZE) { | |
2089 | fprintf(stderr, | |
2090 | Name ": Cannot read migr record block: %s\n", | |
2091 | strerror(errno)); | |
2092 | goto out; | |
2093 | } | |
2094 | ret_val = 0; | |
2095 | ||
2096 | out: | |
2097 | return ret_val; | |
2098 | } | |
2099 | ||
2100 | static struct imsm_dev *imsm_get_device_during_migration( | |
2101 | struct intel_super *super) | |
2102 | { | |
2103 | ||
2104 | struct intel_dev *dv; | |
2105 | ||
2106 | for (dv = super->devlist; dv; dv = dv->next) { | |
2107 | if (is_gen_migration(dv->dev)) | |
2108 | return dv->dev; | |
2109 | } | |
2110 | return NULL; | |
2111 | } | |
2112 | ||
2113 | /******************************************************************************* | |
2114 | * Function: load_imsm_migr_rec | |
2115 | * Description: Function reads imsm migration record (it is stored at the last | |
2116 | * sector of disk) | |
2117 | * Parameters: | |
2118 | * super : imsm internal array info | |
2119 | * info : general array info | |
2120 | * Returns: | |
2121 | * 0 : success | |
2122 | * -1 : fail | |
2123 | * -2 : no migration in progress | |
2124 | ******************************************************************************/ | |
2125 | static int load_imsm_migr_rec(struct intel_super *super, struct mdinfo *info) | |
2126 | { | |
2127 | struct mdinfo *sd; | |
2128 | struct dl *dl = NULL; | |
2129 | char nm[30]; | |
2130 | int retval = -1; | |
2131 | int fd = -1; | |
2132 | struct imsm_dev *dev; | |
2133 | struct imsm_map *map = NULL; | |
2134 | int slot = -1; | |
2135 | ||
2136 | /* find map under migration */ | |
2137 | dev = imsm_get_device_during_migration(super); | |
2138 | /* nothing to load,no migration in progress? | |
2139 | */ | |
2140 | if (dev == NULL) | |
2141 | return -2; | |
2142 | map = get_imsm_map(dev, MAP_0); | |
2143 | ||
2144 | if (info) { | |
2145 | for (sd = info->devs ; sd ; sd = sd->next) { | |
2146 | /* skip spare and failed disks | |
2147 | */ | |
2148 | if (sd->disk.raid_disk < 0) | |
2149 | continue; | |
2150 | /* read only from one of the first two slots */ | |
2151 | if (map) | |
2152 | slot = get_imsm_disk_slot(map, | |
2153 | sd->disk.raid_disk); | |
2154 | if ((map == NULL) || (slot > 1) || (slot < 0)) | |
2155 | continue; | |
2156 | ||
2157 | sprintf(nm, "%d:%d", sd->disk.major, sd->disk.minor); | |
2158 | fd = dev_open(nm, O_RDONLY); | |
2159 | if (fd >= 0) | |
2160 | break; | |
2161 | } | |
2162 | } | |
2163 | if (fd < 0) { | |
2164 | for (dl = super->disks; dl; dl = dl->next) { | |
2165 | /* skip spare and failed disks | |
2166 | */ | |
2167 | if (dl->index < 0) | |
2168 | continue; | |
2169 | /* read only from one of the first two slots */ | |
2170 | if (map) | |
2171 | slot = get_imsm_disk_slot(map, dl->index); | |
2172 | if ((map == NULL) || (slot > 1) || (slot < 0)) | |
2173 | continue; | |
2174 | sprintf(nm, "%d:%d", dl->major, dl->minor); | |
2175 | fd = dev_open(nm, O_RDONLY); | |
2176 | if (fd >= 0) | |
2177 | break; | |
2178 | } | |
2179 | } | |
2180 | if (fd < 0) | |
2181 | goto out; | |
2182 | retval = read_imsm_migr_rec(fd, super); | |
2183 | ||
2184 | out: | |
2185 | if (fd >= 0) | |
2186 | close(fd); | |
2187 | return retval; | |
2188 | } | |
2189 | ||
2190 | #ifndef MDASSEMBLE | |
2191 | /******************************************************************************* | |
2192 | * function: imsm_create_metadata_checkpoint_update | |
2193 | * Description: It creates update for checkpoint change. | |
2194 | * Parameters: | |
2195 | * super : imsm internal array info | |
2196 | * u : pointer to prepared update | |
2197 | * Returns: | |
2198 | * Uptate length. | |
2199 | * If length is equal to 0, input pointer u contains no update | |
2200 | ******************************************************************************/ | |
2201 | static int imsm_create_metadata_checkpoint_update( | |
2202 | struct intel_super *super, | |
2203 | struct imsm_update_general_migration_checkpoint **u) | |
2204 | { | |
2205 | ||
2206 | int update_memory_size = 0; | |
2207 | ||
2208 | dprintf("imsm_create_metadata_checkpoint_update(enter)\n"); | |
2209 | ||
2210 | if (u == NULL) | |
2211 | return 0; | |
2212 | *u = NULL; | |
2213 | ||
2214 | /* size of all update data without anchor */ | |
2215 | update_memory_size = | |
2216 | sizeof(struct imsm_update_general_migration_checkpoint); | |
2217 | ||
2218 | *u = calloc(1, update_memory_size); | |
2219 | if (*u == NULL) { | |
2220 | dprintf("error: cannot get memory for " | |
2221 | "imsm_create_metadata_checkpoint_update update\n"); | |
2222 | return 0; | |
2223 | } | |
2224 | (*u)->type = update_general_migration_checkpoint; | |
2225 | (*u)->curr_migr_unit = __le32_to_cpu(super->migr_rec->curr_migr_unit); | |
2226 | dprintf("imsm_create_metadata_checkpoint_update: prepared for %u\n", | |
2227 | (*u)->curr_migr_unit); | |
2228 | ||
2229 | return update_memory_size; | |
2230 | } | |
2231 | ||
2232 | ||
2233 | static void imsm_update_metadata_locally(struct supertype *st, | |
2234 | void *buf, int len); | |
2235 | ||
2236 | /******************************************************************************* | |
2237 | * Function: write_imsm_migr_rec | |
2238 | * Description: Function writes imsm migration record | |
2239 | * (at the last sector of disk) | |
2240 | * Parameters: | |
2241 | * super : imsm internal array info | |
2242 | * Returns: | |
2243 | * 0 : success | |
2244 | * -1 : if fail | |
2245 | ******************************************************************************/ | |
2246 | static int write_imsm_migr_rec(struct supertype *st) | |
2247 | { | |
2248 | struct intel_super *super = st->sb; | |
2249 | unsigned long long dsize; | |
2250 | char nm[30]; | |
2251 | int fd = -1; | |
2252 | int retval = -1; | |
2253 | struct dl *sd; | |
2254 | int len; | |
2255 | struct imsm_update_general_migration_checkpoint *u; | |
2256 | struct imsm_dev *dev; | |
2257 | struct imsm_map *map = NULL; | |
2258 | ||
2259 | /* find map under migration */ | |
2260 | dev = imsm_get_device_during_migration(super); | |
2261 | /* if no migration, write buffer anyway to clear migr_record | |
2262 | * on disk based on first available device | |
2263 | */ | |
2264 | if (dev == NULL) | |
2265 | dev = get_imsm_dev(super, super->current_vol < 0 ? 0 : | |
2266 | super->current_vol); | |
2267 | ||
2268 | map = get_imsm_map(dev, MAP_0); | |
2269 | ||
2270 | for (sd = super->disks ; sd ; sd = sd->next) { | |
2271 | int slot = -1; | |
2272 | ||
2273 | /* skip failed and spare devices */ | |
2274 | if (sd->index < 0) | |
2275 | continue; | |
2276 | /* write to 2 first slots only */ | |
2277 | if (map) | |
2278 | slot = get_imsm_disk_slot(map, sd->index); | |
2279 | if ((map == NULL) || (slot > 1) || (slot < 0)) | |
2280 | continue; | |
2281 | ||
2282 | sprintf(nm, "%d:%d", sd->major, sd->minor); | |
2283 | fd = dev_open(nm, O_RDWR); | |
2284 | if (fd < 0) | |
2285 | continue; | |
2286 | get_dev_size(fd, NULL, &dsize); | |
2287 | if (lseek64(fd, dsize - MIGR_REC_POSITION, SEEK_SET) < 0) { | |
2288 | fprintf(stderr, | |
2289 | Name ": Cannot seek to anchor block: %s\n", | |
2290 | strerror(errno)); | |
2291 | goto out; | |
2292 | } | |
2293 | if (write(fd, super->migr_rec_buf, MIGR_REC_BUF_SIZE) != | |
2294 | MIGR_REC_BUF_SIZE) { | |
2295 | fprintf(stderr, | |
2296 | Name ": Cannot write migr record block: %s\n", | |
2297 | strerror(errno)); | |
2298 | goto out; | |
2299 | } | |
2300 | close(fd); | |
2301 | fd = -1; | |
2302 | } | |
2303 | /* update checkpoint information in metadata */ | |
2304 | len = imsm_create_metadata_checkpoint_update(super, &u); | |
2305 | ||
2306 | if (len <= 0) { | |
2307 | dprintf("imsm: Cannot prepare update\n"); | |
2308 | goto out; | |
2309 | } | |
2310 | /* update metadata locally */ | |
2311 | imsm_update_metadata_locally(st, u, len); | |
2312 | /* and possibly remotely */ | |
2313 | if (st->update_tail) { | |
2314 | append_metadata_update(st, u, len); | |
2315 | /* during reshape we do all work inside metadata handler | |
2316 | * manage_reshape(), so metadata update has to be triggered | |
2317 | * insida it | |
2318 | */ | |
2319 | flush_metadata_updates(st); | |
2320 | st->update_tail = &st->updates; | |
2321 | } else | |
2322 | free(u); | |
2323 | ||
2324 | retval = 0; | |
2325 | out: | |
2326 | if (fd >= 0) | |
2327 | close(fd); | |
2328 | return retval; | |
2329 | } | |
2330 | #endif /* MDASSEMBLE */ | |
2331 | ||
2332 | /* spare/missing disks activations are not allowe when | |
2333 | * array/container performs reshape operation, because | |
2334 | * all arrays in container works on the same disks set | |
2335 | */ | |
2336 | int imsm_reshape_blocks_arrays_changes(struct intel_super *super) | |
2337 | { | |
2338 | int rv = 0; | |
2339 | struct intel_dev *i_dev; | |
2340 | struct imsm_dev *dev; | |
2341 | ||
2342 | /* check whole container | |
2343 | */ | |
2344 | for (i_dev = super->devlist; i_dev; i_dev = i_dev->next) { | |
2345 | dev = i_dev->dev; | |
2346 | if (is_gen_migration(dev)) { | |
2347 | /* No repair during any migration in container | |
2348 | */ | |
2349 | rv = 1; | |
2350 | break; | |
2351 | } | |
2352 | } | |
2353 | return rv; | |
2354 | } | |
2355 | ||
2356 | static void getinfo_super_imsm_volume(struct supertype *st, struct mdinfo *info, char *dmap) | |
2357 | { | |
2358 | struct intel_super *super = st->sb; | |
2359 | struct migr_record *migr_rec = super->migr_rec; | |
2360 | struct imsm_dev *dev = get_imsm_dev(super, super->current_vol); | |
2361 | struct imsm_map *map = get_imsm_map(dev, MAP_0); | |
2362 | struct imsm_map *prev_map = get_imsm_map(dev, MAP_1); | |
2363 | struct imsm_map *map_to_analyse = map; | |
2364 | struct dl *dl; | |
2365 | char *devname; | |
2366 | unsigned int component_size_alligment; | |
2367 | int map_disks = info->array.raid_disks; | |
2368 | ||
2369 | memset(info, 0, sizeof(*info)); | |
2370 | if (prev_map) | |
2371 | map_to_analyse = prev_map; | |
2372 | ||
2373 | dl = super->current_disk; | |
2374 | ||
2375 | info->container_member = super->current_vol; | |
2376 | info->array.raid_disks = map->num_members; | |
2377 | info->array.level = get_imsm_raid_level(map_to_analyse); | |
2378 | info->array.layout = imsm_level_to_layout(info->array.level); | |
2379 | info->array.md_minor = -1; | |
2380 | info->array.ctime = 0; | |
2381 | info->array.utime = 0; | |
2382 | info->array.chunk_size = | |
2383 | __le16_to_cpu(map_to_analyse->blocks_per_strip) << 9; | |
2384 | info->array.state = !dev->vol.dirty; | |
2385 | info->custom_array_size = __le32_to_cpu(dev->size_high); | |
2386 | info->custom_array_size <<= 32; | |
2387 | info->custom_array_size |= __le32_to_cpu(dev->size_low); | |
2388 | info->recovery_blocked = imsm_reshape_blocks_arrays_changes(st->sb); | |
2389 | ||
2390 | if (is_gen_migration(dev)) { | |
2391 | info->reshape_active = 1; | |
2392 | info->new_level = get_imsm_raid_level(map); | |
2393 | info->new_layout = imsm_level_to_layout(info->new_level); | |
2394 | info->new_chunk = __le16_to_cpu(map->blocks_per_strip) << 9; | |
2395 | info->delta_disks = map->num_members - prev_map->num_members; | |
2396 | if (info->delta_disks) { | |
2397 | /* this needs to be applied to every array | |
2398 | * in the container. | |
2399 | */ | |
2400 | info->reshape_active = CONTAINER_RESHAPE; | |
2401 | } | |
2402 | /* We shape information that we give to md might have to be | |
2403 | * modify to cope with md's requirement for reshaping arrays. | |
2404 | * For example, when reshaping a RAID0, md requires it to be | |
2405 | * presented as a degraded RAID4. | |
2406 | * Also if a RAID0 is migrating to a RAID5 we need to specify | |
2407 | * the array as already being RAID5, but the 'before' layout | |
2408 | * is a RAID4-like layout. | |
2409 | */ | |
2410 | switch (info->array.level) { | |
2411 | case 0: | |
2412 | switch(info->new_level) { | |
2413 | case 0: | |
2414 | /* conversion is happening as RAID4 */ | |
2415 | info->array.level = 4; | |
2416 | info->array.raid_disks += 1; | |
2417 | break; | |
2418 | case 5: | |
2419 | /* conversion is happening as RAID5 */ | |
2420 | info->array.level = 5; | |
2421 | info->array.layout = ALGORITHM_PARITY_N; | |
2422 | info->delta_disks -= 1; | |
2423 | break; | |
2424 | default: | |
2425 | /* FIXME error message */ | |
2426 | info->array.level = UnSet; | |
2427 | break; | |
2428 | } | |
2429 | break; | |
2430 | } | |
2431 | } else { | |
2432 | info->new_level = UnSet; | |
2433 | info->new_layout = UnSet; | |
2434 | info->new_chunk = info->array.chunk_size; | |
2435 | info->delta_disks = 0; | |
2436 | } | |
2437 | ||
2438 | if (dl) { | |
2439 | info->disk.major = dl->major; | |
2440 | info->disk.minor = dl->minor; | |
2441 | info->disk.number = dl->index; | |
2442 | info->disk.raid_disk = get_imsm_disk_slot(map_to_analyse, | |
2443 | dl->index); | |
2444 | } | |
2445 | ||
2446 | info->data_offset = __le32_to_cpu(map_to_analyse->pba_of_lba0); | |
2447 | info->component_size = | |
2448 | __le32_to_cpu(map_to_analyse->blocks_per_member); | |
2449 | ||
2450 | /* check component size aligment | |
2451 | */ | |
2452 | component_size_alligment = | |
2453 | info->component_size % (info->array.chunk_size/512); | |
2454 | ||
2455 | if (component_size_alligment && | |
2456 | (info->array.level != 1) && (info->array.level != UnSet)) { | |
2457 | dprintf("imsm: reported component size alligned from %llu ", | |
2458 | info->component_size); | |
2459 | info->component_size -= component_size_alligment; | |
2460 | dprintf("to %llu (%i).\n", | |
2461 | info->component_size, component_size_alligment); | |
2462 | } | |
2463 | ||
2464 | memset(info->uuid, 0, sizeof(info->uuid)); | |
2465 | info->recovery_start = MaxSector; | |
2466 | ||
2467 | info->reshape_progress = 0; | |
2468 | info->resync_start = MaxSector; | |
2469 | if ((map_to_analyse->map_state == IMSM_T_STATE_UNINITIALIZED || | |
2470 | dev->vol.dirty) && | |
2471 | imsm_reshape_blocks_arrays_changes(super) == 0) { | |
2472 | info->resync_start = 0; | |
2473 | } | |
2474 | if (dev->vol.migr_state) { | |
2475 | switch (migr_type(dev)) { | |
2476 | case MIGR_REPAIR: | |
2477 | case MIGR_INIT: { | |
2478 | __u64 blocks_per_unit = blocks_per_migr_unit(super, | |
2479 | dev); | |
2480 | __u64 units = __le32_to_cpu(dev->vol.curr_migr_unit); | |
2481 | ||
2482 | info->resync_start = blocks_per_unit * units; | |
2483 | break; | |
2484 | } | |
2485 | case MIGR_GEN_MIGR: { | |
2486 | __u64 blocks_per_unit = blocks_per_migr_unit(super, | |
2487 | dev); | |
2488 | __u64 units = __le32_to_cpu(migr_rec->curr_migr_unit); | |
2489 | unsigned long long array_blocks; | |
2490 | int used_disks; | |
2491 | ||
2492 | if (__le32_to_cpu(migr_rec->ascending_migr) && | |
2493 | (units < | |
2494 | (__le32_to_cpu(migr_rec->num_migr_units)-1)) && | |
2495 | (super->migr_rec->rec_status == | |
2496 | __cpu_to_le32(UNIT_SRC_IN_CP_AREA))) | |
2497 | units++; | |
2498 | ||
2499 | info->reshape_progress = blocks_per_unit * units; | |
2500 | ||
2501 | dprintf("IMSM: General Migration checkpoint : %llu " | |
2502 | "(%llu) -> read reshape progress : %llu\n", | |
2503 | (unsigned long long)units, | |
2504 | (unsigned long long)blocks_per_unit, | |
2505 | info->reshape_progress); | |
2506 | ||
2507 | used_disks = imsm_num_data_members(dev, MAP_1); | |
2508 | if (used_disks > 0) { | |
2509 | array_blocks = map->blocks_per_member * | |
2510 | used_disks; | |
2511 | /* round array size down to closest MB | |
2512 | */ | |
2513 | info->custom_array_size = (array_blocks | |
2514 | >> SECT_PER_MB_SHIFT) | |
2515 | << SECT_PER_MB_SHIFT; | |
2516 | } | |
2517 | } | |
2518 | case MIGR_VERIFY: | |
2519 | /* we could emulate the checkpointing of | |
2520 | * 'sync_action=check' migrations, but for now | |
2521 | * we just immediately complete them | |
2522 | */ | |
2523 | case MIGR_REBUILD: | |
2524 | /* this is handled by container_content_imsm() */ | |
2525 | case MIGR_STATE_CHANGE: | |
2526 | /* FIXME handle other migrations */ | |
2527 | default: | |
2528 | /* we are not dirty, so... */ | |
2529 | info->resync_start = MaxSector; | |
2530 | } | |
2531 | } | |
2532 | ||
2533 | strncpy(info->name, (char *) dev->volume, MAX_RAID_SERIAL_LEN); | |
2534 | info->name[MAX_RAID_SERIAL_LEN] = 0; | |
2535 | ||
2536 | info->array.major_version = -1; | |
2537 | info->array.minor_version = -2; | |
2538 | devname = devnum2devname(st->container_dev); | |
2539 | *info->text_version = '\0'; | |
2540 | if (devname) | |
2541 | sprintf(info->text_version, "/%s/%d", devname, info->container_member); | |
2542 | free(devname); | |
2543 | info->safe_mode_delay = 4000; /* 4 secs like the Matrix driver */ | |
2544 | uuid_from_super_imsm(st, info->uuid); | |
2545 | ||
2546 | if (dmap) { | |
2547 | int i, j; | |
2548 | for (i=0; i<map_disks; i++) { | |
2549 | dmap[i] = 0; | |
2550 | if (i < info->array.raid_disks) { | |
2551 | struct imsm_disk *dsk; | |
2552 | j = get_imsm_disk_idx(dev, i, MAP_X); | |
2553 | dsk = get_imsm_disk(super, j); | |
2554 | if (dsk && (dsk->status & CONFIGURED_DISK)) | |
2555 | dmap[i] = 1; | |
2556 | } | |
2557 | } | |
2558 | } | |
2559 | } | |
2560 | ||
2561 | static __u8 imsm_check_degraded(struct intel_super *super, struct imsm_dev *dev, | |
2562 | int failed, int look_in_map); | |
2563 | ||
2564 | static int imsm_count_failed(struct intel_super *super, struct imsm_dev *dev, | |
2565 | int look_in_map); | |
2566 | ||
2567 | ||
2568 | #ifndef MDASSEMBLE | |
2569 | static void manage_second_map(struct intel_super *super, struct imsm_dev *dev) | |
2570 | { | |
2571 | if (is_gen_migration(dev)) { | |
2572 | int failed; | |
2573 | __u8 map_state; | |
2574 | struct imsm_map *map2 = get_imsm_map(dev, MAP_1); | |
2575 | ||
2576 | failed = imsm_count_failed(super, dev, MAP_1); | |
2577 | map_state = imsm_check_degraded(super, dev, failed, MAP_1); | |
2578 | if (map2->map_state != map_state) { | |
2579 | map2->map_state = map_state; | |
2580 | super->updates_pending++; | |
2581 | } | |
2582 | } | |
2583 | } | |
2584 | #endif | |
2585 | ||
2586 | static struct imsm_disk *get_imsm_missing(struct intel_super *super, __u8 index) | |
2587 | { | |
2588 | struct dl *d; | |
2589 | ||
2590 | for (d = super->missing; d; d = d->next) | |
2591 | if (d->index == index) | |
2592 | return &d->disk; | |
2593 | return NULL; | |
2594 | } | |
2595 | ||
2596 | static void getinfo_super_imsm(struct supertype *st, struct mdinfo *info, char *map) | |
2597 | { | |
2598 | struct intel_super *super = st->sb; | |
2599 | struct imsm_disk *disk; | |
2600 | int map_disks = info->array.raid_disks; | |
2601 | int max_enough = -1; | |
2602 | int i; | |
2603 | struct imsm_super *mpb; | |
2604 | ||
2605 | if (super->current_vol >= 0) { | |
2606 | getinfo_super_imsm_volume(st, info, map); | |
2607 | return; | |
2608 | } | |
2609 | memset(info, 0, sizeof(*info)); | |
2610 | ||
2611 | /* Set raid_disks to zero so that Assemble will always pull in valid | |
2612 | * spares | |
2613 | */ | |
2614 | info->array.raid_disks = 0; | |
2615 | info->array.level = LEVEL_CONTAINER; | |
2616 | info->array.layout = 0; | |
2617 | info->array.md_minor = -1; | |
2618 | info->array.ctime = 0; /* N/A for imsm */ | |
2619 | info->array.utime = 0; | |
2620 | info->array.chunk_size = 0; | |
2621 | ||
2622 | info->disk.major = 0; | |
2623 | info->disk.minor = 0; | |
2624 | info->disk.raid_disk = -1; | |
2625 | info->reshape_active = 0; | |
2626 | info->array.major_version = -1; | |
2627 | info->array.minor_version = -2; | |
2628 | strcpy(info->text_version, "imsm"); | |
2629 | info->safe_mode_delay = 0; | |
2630 | info->disk.number = -1; | |
2631 | info->disk.state = 0; | |
2632 | info->name[0] = 0; | |
2633 | info->recovery_start = MaxSector; | |
2634 | info->recovery_blocked = imsm_reshape_blocks_arrays_changes(st->sb); | |
2635 | ||
2636 | /* do we have the all the insync disks that we expect? */ | |
2637 | mpb = super->anchor; | |
2638 | ||
2639 | for (i = 0; i < mpb->num_raid_devs; i++) { | |
2640 | struct imsm_dev *dev = get_imsm_dev(super, i); | |
2641 | int failed, enough, j, missing = 0; | |
2642 | struct imsm_map *map; | |
2643 | __u8 state; | |
2644 | ||
2645 | failed = imsm_count_failed(super, dev, MAP_0); | |
2646 | state = imsm_check_degraded(super, dev, failed, MAP_0); | |
2647 | map = get_imsm_map(dev, MAP_0); | |
2648 | ||
2649 | /* any newly missing disks? | |
2650 | * (catches single-degraded vs double-degraded) | |
2651 | */ | |
2652 | for (j = 0; j < map->num_members; j++) { | |
2653 | __u32 ord = get_imsm_ord_tbl_ent(dev, j, MAP_0); | |
2654 | __u32 idx = ord_to_idx(ord); | |
2655 | ||
2656 | if (!(ord & IMSM_ORD_REBUILD) && | |
2657 | get_imsm_missing(super, idx)) { | |
2658 | missing = 1; | |
2659 | break; | |
2660 | } | |
2661 | } | |
2662 | ||
2663 | if (state == IMSM_T_STATE_FAILED) | |
2664 | enough = -1; | |
2665 | else if (state == IMSM_T_STATE_DEGRADED && | |
2666 | (state != map->map_state || missing)) | |
2667 | enough = 0; | |
2668 | else /* we're normal, or already degraded */ | |
2669 | enough = 1; | |
2670 | ||
2671 | /* in the missing/failed disk case check to see | |
2672 | * if at least one array is runnable | |
2673 | */ | |
2674 | max_enough = max(max_enough, enough); | |
2675 | } | |
2676 | dprintf("%s: enough: %d\n", __func__, max_enough); | |
2677 | info->container_enough = max_enough; | |
2678 | ||
2679 | if (super->disks) { | |
2680 | __u32 reserved = imsm_reserved_sectors(super, super->disks); | |
2681 | ||
2682 | disk = &super->disks->disk; | |
2683 | info->data_offset = __le32_to_cpu(disk->total_blocks) - reserved; | |
2684 | info->component_size = reserved; | |
2685 | info->disk.state = is_configured(disk) ? (1 << MD_DISK_ACTIVE) : 0; | |
2686 | /* we don't change info->disk.raid_disk here because | |
2687 | * this state will be finalized in mdmon after we have | |
2688 | * found the 'most fresh' version of the metadata | |
2689 | */ | |
2690 | info->disk.state |= is_failed(disk) ? (1 << MD_DISK_FAULTY) : 0; | |
2691 | info->disk.state |= is_spare(disk) ? 0 : (1 << MD_DISK_SYNC); | |
2692 | } | |
2693 | ||
2694 | /* only call uuid_from_super_imsm when this disk is part of a populated container, | |
2695 | * ->compare_super may have updated the 'num_raid_devs' field for spares | |
2696 | */ | |
2697 | if (info->disk.state & (1 << MD_DISK_SYNC) || super->anchor->num_raid_devs) | |
2698 | uuid_from_super_imsm(st, info->uuid); | |
2699 | else | |
2700 | memcpy(info->uuid, uuid_zero, sizeof(uuid_zero)); | |
2701 | ||
2702 | /* I don't know how to compute 'map' on imsm, so use safe default */ | |
2703 | if (map) { | |
2704 | int i; | |
2705 | for (i = 0; i < map_disks; i++) | |
2706 | map[i] = 1; | |
2707 | } | |
2708 | ||
2709 | } | |
2710 | ||
2711 | /* allocates memory and fills disk in mdinfo structure | |
2712 | * for each disk in array */ | |
2713 | struct mdinfo *getinfo_super_disks_imsm(struct supertype *st) | |
2714 | { | |
2715 | struct mdinfo *mddev = NULL; | |
2716 | struct intel_super *super = st->sb; | |
2717 | struct imsm_disk *disk; | |
2718 | int count = 0; | |
2719 | struct dl *dl; | |
2720 | if (!super || !super->disks) | |
2721 | return NULL; | |
2722 | dl = super->disks; | |
2723 | mddev = malloc(sizeof(*mddev)); | |
2724 | if (!mddev) { | |
2725 | fprintf(stderr, Name ": Failed to allocate memory.\n"); | |
2726 | return NULL; | |
2727 | } | |
2728 | memset(mddev, 0, sizeof(*mddev)); | |
2729 | while (dl) { | |
2730 | struct mdinfo *tmp; | |
2731 | disk = &dl->disk; | |
2732 | tmp = malloc(sizeof(*tmp)); | |
2733 | if (!tmp) { | |
2734 | fprintf(stderr, Name ": Failed to allocate memory.\n"); | |
2735 | if (mddev) | |
2736 | sysfs_free(mddev); | |
2737 | return NULL; | |
2738 | } | |
2739 | memset(tmp, 0, sizeof(*tmp)); | |
2740 | if (mddev->devs) | |
2741 | tmp->next = mddev->devs; | |
2742 | mddev->devs = tmp; | |
2743 | tmp->disk.number = count++; | |
2744 | tmp->disk.major = dl->major; | |
2745 | tmp->disk.minor = dl->minor; | |
2746 | tmp->disk.state = is_configured(disk) ? | |
2747 | (1 << MD_DISK_ACTIVE) : 0; | |
2748 | tmp->disk.state |= is_failed(disk) ? (1 << MD_DISK_FAULTY) : 0; | |
2749 | tmp->disk.state |= is_spare(disk) ? 0 : (1 << MD_DISK_SYNC); | |
2750 | tmp->disk.raid_disk = -1; | |
2751 | dl = dl->next; | |
2752 | } | |
2753 | return mddev; | |
2754 | } | |
2755 | ||
2756 | static int update_super_imsm(struct supertype *st, struct mdinfo *info, | |
2757 | char *update, char *devname, int verbose, | |
2758 | int uuid_set, char *homehost) | |
2759 | { | |
2760 | /* For 'assemble' and 'force' we need to return non-zero if any | |
2761 | * change was made. For others, the return value is ignored. | |
2762 | * Update options are: | |
2763 | * force-one : This device looks a bit old but needs to be included, | |
2764 | * update age info appropriately. | |
2765 | * assemble: clear any 'faulty' flag to allow this device to | |
2766 | * be assembled. | |
2767 | * force-array: Array is degraded but being forced, mark it clean | |
2768 | * if that will be needed to assemble it. | |
2769 | * | |
2770 | * newdev: not used ???? | |
2771 | * grow: Array has gained a new device - this is currently for | |
2772 | * linear only | |
2773 | * resync: mark as dirty so a resync will happen. | |
2774 | * name: update the name - preserving the homehost | |
2775 | * uuid: Change the uuid of the array to match watch is given | |
2776 | * | |
2777 | * Following are not relevant for this imsm: | |
2778 | * sparc2.2 : update from old dodgey metadata | |
2779 | * super-minor: change the preferred_minor number | |
2780 | * summaries: update redundant counters. | |
2781 | * homehost: update the recorded homehost | |
2782 | * _reshape_progress: record new reshape_progress position. | |
2783 | */ | |
2784 | int rv = 1; | |
2785 | struct intel_super *super = st->sb; | |
2786 | struct imsm_super *mpb; | |
2787 | ||
2788 | /* we can only update container info */ | |
2789 | if (!super || super->current_vol >= 0 || !super->anchor) | |
2790 | return 1; | |
2791 | ||
2792 | mpb = super->anchor; | |
2793 | ||
2794 | if (strcmp(update, "uuid") == 0) { | |
2795 | /* We take this to mean that the family_num should be updated. | |
2796 | * However that is much smaller than the uuid so we cannot really | |
2797 | * allow an explicit uuid to be given. And it is hard to reliably | |
2798 | * know if one was. | |
2799 | * So if !uuid_set we know the current uuid is random and just used | |
2800 | * the first 'int' and copy it to the other 3 positions. | |
2801 | * Otherwise we require the 4 'int's to be the same as would be the | |
2802 | * case if we are using a random uuid. So an explicit uuid will be | |
2803 | * accepted as long as all for ints are the same... which shouldn't hurt | |
2804 | */ | |
2805 | if (!uuid_set) { | |
2806 | info->uuid[1] = info->uuid[2] = info->uuid[3] = info->uuid[0]; | |
2807 | rv = 0; | |
2808 | } else { | |
2809 | if (info->uuid[0] != info->uuid[1] || | |
2810 | info->uuid[1] != info->uuid[2] || | |
2811 | info->uuid[2] != info->uuid[3]) | |
2812 | rv = -1; | |
2813 | else | |
2814 | rv = 0; | |
2815 | } | |
2816 | if (rv == 0) | |
2817 | mpb->orig_family_num = info->uuid[0]; | |
2818 | } else if (strcmp(update, "assemble") == 0) | |
2819 | rv = 0; | |
2820 | else | |
2821 | rv = -1; | |
2822 | ||
2823 | /* successful update? recompute checksum */ | |
2824 | if (rv == 0) | |
2825 | mpb->check_sum = __le32_to_cpu(__gen_imsm_checksum(mpb)); | |
2826 | ||
2827 | return rv; | |
2828 | } | |
2829 | ||
2830 | static size_t disks_to_mpb_size(int disks) | |
2831 | { | |
2832 | size_t size; | |
2833 | ||
2834 | size = sizeof(struct imsm_super); | |
2835 | size += (disks - 1) * sizeof(struct imsm_disk); | |
2836 | size += 2 * sizeof(struct imsm_dev); | |
2837 | /* up to 2 maps per raid device (-2 for imsm_maps in imsm_dev */ | |
2838 | size += (4 - 2) * sizeof(struct imsm_map); | |
2839 | /* 4 possible disk_ord_tbl's */ | |
2840 | size += 4 * (disks - 1) * sizeof(__u32); | |
2841 | ||
2842 | return size; | |
2843 | } | |
2844 | ||
2845 | static __u64 avail_size_imsm(struct supertype *st, __u64 devsize) | |
2846 | { | |
2847 | if (devsize < (MPB_SECTOR_CNT + IMSM_RESERVED_SECTORS)) | |
2848 | return 0; | |
2849 | ||
2850 | return devsize - (MPB_SECTOR_CNT + IMSM_RESERVED_SECTORS); | |
2851 | } | |
2852 | ||
2853 | static void free_devlist(struct intel_super *super) | |
2854 | { | |
2855 | struct intel_dev *dv; | |
2856 | ||
2857 | while (super->devlist) { | |
2858 | dv = super->devlist->next; | |
2859 | free(super->devlist->dev); | |
2860 | free(super->devlist); | |
2861 | super->devlist = dv; | |
2862 | } | |
2863 | } | |
2864 | ||
2865 | static void imsm_copy_dev(struct imsm_dev *dest, struct imsm_dev *src) | |
2866 | { | |
2867 | memcpy(dest, src, sizeof_imsm_dev(src, 0)); | |
2868 | } | |
2869 | ||
2870 | static int compare_super_imsm(struct supertype *st, struct supertype *tst) | |
2871 | { | |
2872 | /* | |
2873 | * return: | |
2874 | * 0 same, or first was empty, and second was copied | |
2875 | * 1 second had wrong number | |
2876 | * 2 wrong uuid | |
2877 | * 3 wrong other info | |
2878 | */ | |
2879 | struct intel_super *first = st->sb; | |
2880 | struct intel_super *sec = tst->sb; | |
2881 | ||
2882 | if (!first) { | |
2883 | st->sb = tst->sb; | |
2884 | tst->sb = NULL; | |
2885 | return 0; | |
2886 | } | |
2887 | /* in platform dependent environment test if the disks | |
2888 | * use the same Intel hba | |
2889 | */ | |
2890 | if (!check_env("IMSM_NO_PLATFORM")) { | |
2891 | if (!first->hba || !sec->hba || | |
2892 | (first->hba->type != sec->hba->type)) { | |
2893 | fprintf(stderr, | |
2894 | "HBAs of devices does not match %s != %s\n", | |
2895 | first->hba ? get_sys_dev_type(first->hba->type) : NULL, | |
2896 | sec->hba ? get_sys_dev_type(sec->hba->type) : NULL); | |
2897 | return 3; | |
2898 | } | |
2899 | } | |
2900 | ||
2901 | /* if an anchor does not have num_raid_devs set then it is a free | |
2902 | * floating spare | |
2903 | */ | |
2904 | if (first->anchor->num_raid_devs > 0 && | |
2905 | sec->anchor->num_raid_devs > 0) { | |
2906 | /* Determine if these disks might ever have been | |
2907 | * related. Further disambiguation can only take place | |
2908 | * in load_super_imsm_all | |
2909 | */ | |
2910 | __u32 first_family = first->anchor->orig_family_num; | |
2911 | __u32 sec_family = sec->anchor->orig_family_num; | |
2912 | ||
2913 | if (memcmp(first->anchor->sig, sec->anchor->sig, | |
2914 | MAX_SIGNATURE_LENGTH) != 0) | |
2915 | return 3; | |
2916 | ||
2917 | if (first_family == 0) | |
2918 | first_family = first->anchor->family_num; | |
2919 | if (sec_family == 0) | |
2920 | sec_family = sec->anchor->family_num; | |
2921 | ||
2922 | if (first_family != sec_family) | |
2923 | return 3; | |
2924 | ||
2925 | } | |
2926 | ||
2927 | ||
2928 | /* if 'first' is a spare promote it to a populated mpb with sec's | |
2929 | * family number | |
2930 | */ | |
2931 | if (first->anchor->num_raid_devs == 0 && | |
2932 | sec->anchor->num_raid_devs > 0) { | |
2933 | int i; | |
2934 | struct intel_dev *dv; | |
2935 | struct imsm_dev *dev; | |
2936 | ||
2937 | /* we need to copy raid device info from sec if an allocation | |
2938 | * fails here we don't associate the spare | |
2939 | */ | |
2940 | for (i = 0; i < sec->anchor->num_raid_devs; i++) { | |
2941 | dv = malloc(sizeof(*dv)); | |
2942 | if (!dv) | |
2943 | break; | |
2944 | dev = malloc(sizeof_imsm_dev(get_imsm_dev(sec, i), 1)); | |
2945 | if (!dev) { | |
2946 | free(dv); | |
2947 | break; | |
2948 | } | |
2949 | dv->dev = dev; | |
2950 | dv->index = i; | |
2951 | dv->next = first->devlist; | |
2952 | first->devlist = dv; | |
2953 | } | |
2954 | if (i < sec->anchor->num_raid_devs) { | |
2955 | /* allocation failure */ | |
2956 | free_devlist(first); | |
2957 | fprintf(stderr, "imsm: failed to associate spare\n"); | |
2958 | return 3; | |
2959 | } | |
2960 | first->anchor->num_raid_devs = sec->anchor->num_raid_devs; | |
2961 | first->anchor->orig_family_num = sec->anchor->orig_family_num; | |
2962 | first->anchor->family_num = sec->anchor->family_num; | |
2963 | memcpy(first->anchor->sig, sec->anchor->sig, MAX_SIGNATURE_LENGTH); | |
2964 | for (i = 0; i < sec->anchor->num_raid_devs; i++) | |
2965 | imsm_copy_dev(get_imsm_dev(first, i), get_imsm_dev(sec, i)); | |
2966 | } | |
2967 | ||
2968 | return 0; | |
2969 | } | |
2970 | ||
2971 | static void fd2devname(int fd, char *name) | |
2972 | { | |
2973 | struct stat st; | |
2974 | char path[256]; | |
2975 | char dname[PATH_MAX]; | |
2976 | char *nm; | |
2977 | int rv; | |
2978 | ||
2979 | name[0] = '\0'; | |
2980 | if (fstat(fd, &st) != 0) | |
2981 | return; | |
2982 | sprintf(path, "/sys/dev/block/%d:%d", | |
2983 | major(st.st_rdev), minor(st.st_rdev)); | |
2984 | ||
2985 | rv = readlink(path, dname, sizeof(dname)-1); | |
2986 | if (rv <= 0) | |
2987 | return; | |
2988 | ||
2989 | dname[rv] = '\0'; | |
2990 | nm = strrchr(dname, '/'); | |
2991 | if (nm) { | |
2992 | nm++; | |
2993 | snprintf(name, MAX_RAID_SERIAL_LEN, "/dev/%s", nm); | |
2994 | } | |
2995 | } | |
2996 | ||
2997 | extern int scsi_get_serial(int fd, void *buf, size_t buf_len); | |
2998 | ||
2999 | static int imsm_read_serial(int fd, char *devname, | |
3000 | __u8 serial[MAX_RAID_SERIAL_LEN]) | |
3001 | { | |
3002 | unsigned char scsi_serial[255]; | |
3003 | int rv; | |
3004 | int rsp_len; | |
3005 | int len; | |
3006 | char *dest; | |
3007 | char *src; | |
3008 | char *rsp_buf; | |
3009 | int i; | |
3010 | ||
3011 | memset(scsi_serial, 0, sizeof(scsi_serial)); | |
3012 | ||
3013 | rv = scsi_get_serial(fd, scsi_serial, sizeof(scsi_serial)); | |
3014 | ||
3015 | if (rv && check_env("IMSM_DEVNAME_AS_SERIAL")) { | |
3016 | memset(serial, 0, MAX_RAID_SERIAL_LEN); | |
3017 | fd2devname(fd, (char *) serial); | |
3018 | return 0; | |
3019 | } | |
3020 | ||
3021 | if (rv != 0) { | |
3022 | if (devname) | |
3023 | fprintf(stderr, | |
3024 | Name ": Failed to retrieve serial for %s\n", | |
3025 | devname); | |
3026 | return rv; | |
3027 | } | |
3028 | ||
3029 | rsp_len = scsi_serial[3]; | |
3030 | if (!rsp_len) { | |
3031 | if (devname) | |
3032 | fprintf(stderr, | |
3033 | Name ": Failed to retrieve serial for %s\n", | |
3034 | devname); | |
3035 | return 2; | |
3036 | } | |
3037 | rsp_buf = (char *) &scsi_serial[4]; | |
3038 | ||
3039 | /* trim all whitespace and non-printable characters and convert | |
3040 | * ':' to ';' | |
3041 | */ | |
3042 | for (i = 0, dest = rsp_buf; i < rsp_len; i++) { | |
3043 | src = &rsp_buf[i]; | |
3044 | if (*src > 0x20) { | |
3045 | /* ':' is reserved for use in placeholder serial | |
3046 | * numbers for missing disks | |
3047 | */ | |
3048 | if (*src == ':') | |
3049 | *dest++ = ';'; | |
3050 | else | |
3051 | *dest++ = *src; | |
3052 | } | |
3053 | } | |
3054 | len = dest - rsp_buf; | |
3055 | dest = rsp_buf; | |
3056 | ||
3057 | /* truncate leading characters */ | |
3058 | if (len > MAX_RAID_SERIAL_LEN) { | |
3059 | dest += len - MAX_RAID_SERIAL_LEN; | |
3060 | len = MAX_RAID_SERIAL_LEN; | |
3061 | } | |
3062 | ||
3063 | memset(serial, 0, MAX_RAID_SERIAL_LEN); | |
3064 | memcpy(serial, dest, len); | |
3065 | ||
3066 | return 0; | |
3067 | } | |
3068 | ||
3069 | static int serialcmp(__u8 *s1, __u8 *s2) | |
3070 | { | |
3071 | return strncmp((char *) s1, (char *) s2, MAX_RAID_SERIAL_LEN); | |
3072 | } | |
3073 | ||
3074 | static void serialcpy(__u8 *dest, __u8 *src) | |
3075 | { | |
3076 | strncpy((char *) dest, (char *) src, MAX_RAID_SERIAL_LEN); | |
3077 | } | |
3078 | ||
3079 | static struct dl *serial_to_dl(__u8 *serial, struct intel_super *super) | |
3080 | { | |
3081 | struct dl *dl; | |
3082 | ||
3083 | for (dl = super->disks; dl; dl = dl->next) | |
3084 | if (serialcmp(dl->serial, serial) == 0) | |
3085 | break; | |
3086 | ||
3087 | return dl; | |
3088 | } | |
3089 | ||
3090 | static struct imsm_disk * | |
3091 | __serial_to_disk(__u8 *serial, struct imsm_super *mpb, int *idx) | |
3092 | { | |
3093 | int i; | |
3094 | ||
3095 | for (i = 0; i < mpb->num_disks; i++) { | |
3096 | struct imsm_disk *disk = __get_imsm_disk(mpb, i); | |
3097 | ||
3098 | if (serialcmp(disk->serial, serial) == 0) { | |
3099 | if (idx) | |
3100 | *idx = i; | |
3101 | return disk; | |
3102 | } | |
3103 | } | |
3104 | ||
3105 | return NULL; | |
3106 | } | |
3107 | ||
3108 | static int | |
3109 | load_imsm_disk(int fd, struct intel_super *super, char *devname, int keep_fd) | |
3110 | { | |
3111 | struct imsm_disk *disk; | |
3112 | struct dl *dl; | |
3113 | struct stat stb; | |
3114 | int rv; | |
3115 | char name[40]; | |
3116 | __u8 serial[MAX_RAID_SERIAL_LEN]; | |
3117 | ||
3118 | rv = imsm_read_serial(fd, devname, serial); | |
3119 | ||
3120 | if (rv != 0) | |
3121 | return 2; | |
3122 | ||
3123 | dl = calloc(1, sizeof(*dl)); | |
3124 | if (!dl) { | |
3125 | if (devname) | |
3126 | fprintf(stderr, | |
3127 | Name ": failed to allocate disk buffer for %s\n", | |
3128 | devname); | |
3129 | return 2; | |
3130 | } | |
3131 | ||
3132 | fstat(fd, &stb); | |
3133 | dl->major = major(stb.st_rdev); | |
3134 | dl->minor = minor(stb.st_rdev); | |
3135 | dl->next = super->disks; | |
3136 | dl->fd = keep_fd ? fd : -1; | |
3137 | assert(super->disks == NULL); | |
3138 | super->disks = dl; | |
3139 | serialcpy(dl->serial, serial); | |
3140 | dl->index = -2; | |
3141 | dl->e = NULL; | |
3142 | fd2devname(fd, name); | |
3143 | if (devname) | |
3144 | dl->devname = strdup(devname); | |
3145 | else | |
3146 | dl->devname = strdup(name); | |
3147 | ||
3148 | /* look up this disk's index in the current anchor */ | |
3149 | disk = __serial_to_disk(dl->serial, super->anchor, &dl->index); | |
3150 | if (disk) { | |
3151 | dl->disk = *disk; | |
3152 | /* only set index on disks that are a member of a | |
3153 | * populated contianer, i.e. one with raid_devs | |
3154 | */ | |
3155 | if (is_failed(&dl->disk)) | |
3156 | dl->index = -2; | |
3157 | else if (is_spare(&dl->disk)) | |
3158 | dl->index = -1; | |
3159 | } | |
3160 | ||
3161 | return 0; | |
3162 | } | |
3163 | ||
3164 | #ifndef MDASSEMBLE | |
3165 | /* When migrating map0 contains the 'destination' state while map1 | |
3166 | * contains the current state. When not migrating map0 contains the | |
3167 | * current state. This routine assumes that map[0].map_state is set to | |
3168 | * the current array state before being called. | |
3169 | * | |
3170 | * Migration is indicated by one of the following states | |
3171 | * 1/ Idle (migr_state=0 map0state=normal||unitialized||degraded||failed) | |
3172 | * 2/ Initialize (migr_state=1 migr_type=MIGR_INIT map0state=normal | |
3173 | * map1state=unitialized) | |
3174 | * 3/ Repair (Resync) (migr_state=1 migr_type=MIGR_REPAIR map0state=normal | |
3175 | * map1state=normal) | |
3176 | * 4/ Rebuild (migr_state=1 migr_type=MIGR_REBUILD map0state=normal | |
3177 | * map1state=degraded) | |
3178 | * 5/ Migration (mig_state=1 migr_type=MIGR_GEN_MIGR map0state=normal | |
3179 | * map1state=normal) | |
3180 | */ | |
3181 | static void migrate(struct imsm_dev *dev, struct intel_super *super, | |
3182 | __u8 to_state, int migr_type) | |
3183 | { | |
3184 | struct imsm_map *dest; | |
3185 | struct imsm_map *src = get_imsm_map(dev, MAP_0); | |
3186 | ||
3187 | dev->vol.migr_state = 1; | |
3188 | set_migr_type(dev, migr_type); | |
3189 | dev->vol.curr_migr_unit = 0; | |
3190 | dest = get_imsm_map(dev, MAP_1); | |
3191 | ||
3192 | /* duplicate and then set the target end state in map[0] */ | |
3193 | memcpy(dest, src, sizeof_imsm_map(src)); | |
3194 | if ((migr_type == MIGR_REBUILD) || | |
3195 | (migr_type == MIGR_GEN_MIGR)) { | |
3196 | __u32 ord; | |
3197 | int i; | |
3198 | ||
3199 | for (i = 0; i < src->num_members; i++) { | |
3200 | ord = __le32_to_cpu(src->disk_ord_tbl[i]); | |
3201 | set_imsm_ord_tbl_ent(src, i, ord_to_idx(ord)); | |
3202 | } | |
3203 | } | |
3204 | ||
3205 | if (migr_type == MIGR_GEN_MIGR) | |
3206 | /* Clear migration record */ | |
3207 | memset(super->migr_rec, 0, sizeof(struct migr_record)); | |
3208 | ||
3209 | src->map_state = to_state; | |
3210 | } | |
3211 | ||
3212 | static void end_migration(struct imsm_dev *dev, struct intel_super *super, | |
3213 | __u8 map_state) | |
3214 | { | |
3215 | struct imsm_map *map = get_imsm_map(dev, MAP_0); | |
3216 | struct imsm_map *prev = get_imsm_map(dev, dev->vol.migr_state == 0 ? | |
3217 | MAP_0 : MAP_1); | |
3218 | int i, j; | |
3219 | ||
3220 | /* merge any IMSM_ORD_REBUILD bits that were not successfully | |
3221 | * completed in the last migration. | |
3222 | * | |
3223 | * FIXME add support for raid-level-migration | |
3224 | */ | |
3225 | if ((map_state != map->map_state) && (is_gen_migration(dev) == 0) && | |
3226 | (prev->map_state != IMSM_T_STATE_UNINITIALIZED)) { | |
3227 | /* when final map state is other than expected | |
3228 | * merge maps (not for migration) | |
3229 | */ | |
3230 | int failed; | |
3231 | ||
3232 | for (i = 0; i < prev->num_members; i++) | |
3233 | for (j = 0; j < map->num_members; j++) | |
3234 | /* during online capacity expansion | |
3235 | * disks position can be changed | |
3236 | * if takeover is used | |
3237 | */ | |
3238 | if (ord_to_idx(map->disk_ord_tbl[j]) == | |
3239 | ord_to_idx(prev->disk_ord_tbl[i])) { | |
3240 | map->disk_ord_tbl[j] |= | |
3241 | prev->disk_ord_tbl[i]; | |
3242 | break; | |
3243 | } | |
3244 | failed = imsm_count_failed(super, dev, MAP_0); | |
3245 | map_state = imsm_check_degraded(super, dev, failed, MAP_0); | |
3246 | } | |
3247 | ||
3248 | dev->vol.migr_state = 0; | |
3249 | set_migr_type(dev, 0); | |
3250 | dev->vol.curr_migr_unit = 0; | |
3251 | map->map_state = map_state; | |
3252 | } | |
3253 | #endif | |
3254 | ||
3255 | static int parse_raid_devices(struct intel_super *super) | |
3256 | { | |
3257 | int i; | |
3258 | struct imsm_dev *dev_new; | |
3259 | size_t len, len_migr; | |
3260 | size_t max_len = 0; | |
3261 | size_t space_needed = 0; | |
3262 | struct imsm_super *mpb = super->anchor; | |
3263 | ||
3264 | for (i = 0; i < super->anchor->num_raid_devs; i++) { | |
3265 | struct imsm_dev *dev_iter = __get_imsm_dev(super->anchor, i); | |
3266 | struct intel_dev *dv; | |
3267 | ||
3268 | len = sizeof_imsm_dev(dev_iter, 0); | |
3269 | len_migr = sizeof_imsm_dev(dev_iter, 1); | |
3270 | if (len_migr > len) | |
3271 | space_needed += len_migr - len; | |
3272 | ||
3273 | dv = malloc(sizeof(*dv)); | |
3274 | if (!dv) | |
3275 | return 1; | |
3276 | if (max_len < len_migr) | |
3277 | max_len = len_migr; | |
3278 | if (max_len > len_migr) | |
3279 | space_needed += max_len - len_migr; | |
3280 | dev_new = malloc(max_len); | |
3281 | if (!dev_new) { | |
3282 | free(dv); | |
3283 | return 1; | |
3284 | } | |
3285 | imsm_copy_dev(dev_new, dev_iter); | |
3286 | dv->dev = dev_new; | |
3287 | dv->index = i; | |
3288 | dv->next = super->devlist; | |
3289 | super->devlist = dv; | |
3290 | } | |
3291 | ||
3292 | /* ensure that super->buf is large enough when all raid devices | |
3293 | * are migrating | |
3294 | */ | |
3295 | if (__le32_to_cpu(mpb->mpb_size) + space_needed > super->len) { | |
3296 | void *buf; | |
3297 | ||
3298 | len = ROUND_UP(__le32_to_cpu(mpb->mpb_size) + space_needed, 512); | |
3299 | if (posix_memalign(&buf, 512, len) != 0) | |
3300 | return 1; | |
3301 | ||
3302 | memcpy(buf, super->buf, super->len); | |
3303 | memset(buf + super->len, 0, len - super->len); | |
3304 | free(super->buf); | |
3305 | super->buf = buf; | |
3306 | super->len = len; | |
3307 | } | |
3308 | ||
3309 | return 0; | |
3310 | } | |
3311 | ||
3312 | /* retrieve a pointer to the bbm log which starts after all raid devices */ | |
3313 | struct bbm_log *__get_imsm_bbm_log(struct imsm_super *mpb) | |
3314 | { | |
3315 | void *ptr = NULL; | |
3316 | ||
3317 | if (__le32_to_cpu(mpb->bbm_log_size)) { | |
3318 | ptr = mpb; | |
3319 | ptr += mpb->mpb_size - __le32_to_cpu(mpb->bbm_log_size); | |
3320 | } | |
3321 | ||
3322 | return ptr; | |
3323 | } | |
3324 | ||
3325 | /******************************************************************************* | |
3326 | * Function: check_mpb_migr_compatibility | |
3327 | * Description: Function checks for unsupported migration features: | |
3328 | * - migration optimization area (pba_of_lba0) | |
3329 | * - descending reshape (ascending_migr) | |
3330 | * Parameters: | |
3331 | * super : imsm metadata information | |
3332 | * Returns: | |
3333 | * 0 : migration is compatible | |
3334 | * -1 : migration is not compatible | |
3335 | ******************************************************************************/ | |
3336 | int check_mpb_migr_compatibility(struct intel_super *super) | |
3337 | { | |
3338 | struct imsm_map *map0, *map1; | |
3339 | struct migr_record *migr_rec = super->migr_rec; | |
3340 | int i; | |
3341 | ||
3342 | for (i = 0; i < super->anchor->num_raid_devs; i++) { | |
3343 | struct imsm_dev *dev_iter = __get_imsm_dev(super->anchor, i); | |
3344 | ||
3345 | if (dev_iter && | |
3346 | dev_iter->vol.migr_state == 1 && | |
3347 | dev_iter->vol.migr_type == MIGR_GEN_MIGR) { | |
3348 | /* This device is migrating */ | |
3349 | map0 = get_imsm_map(dev_iter, MAP_0); | |
3350 | map1 = get_imsm_map(dev_iter, MAP_1); | |
3351 | if (map0->pba_of_lba0 != map1->pba_of_lba0) | |
3352 | /* migration optimization area was used */ | |
3353 | return -1; | |
3354 | if (migr_rec->ascending_migr == 0 | |
3355 | && migr_rec->dest_depth_per_unit > 0) | |
3356 | /* descending reshape not supported yet */ | |
3357 | return -1; | |
3358 | } | |
3359 | } | |
3360 | return 0; | |
3361 | } | |
3362 | ||
3363 | static void __free_imsm(struct intel_super *super, int free_disks); | |
3364 | ||
3365 | /* load_imsm_mpb - read matrix metadata | |
3366 | * allocates super->mpb to be freed by free_imsm | |
3367 | */ | |
3368 | static int load_imsm_mpb(int fd, struct intel_super *super, char *devname) | |
3369 | { | |
3370 | unsigned long long dsize; | |
3371 | unsigned long long sectors; | |
3372 | struct stat; | |
3373 | struct imsm_super *anchor; | |
3374 | __u32 check_sum; | |
3375 | ||
3376 | get_dev_size(fd, NULL, &dsize); | |
3377 | if (dsize < 1024) { | |
3378 | if (devname) | |
3379 | fprintf(stderr, | |
3380 | Name ": %s: device to small for imsm\n", | |
3381 | devname); | |
3382 | return 1; | |
3383 | } | |
3384 | ||
3385 | if (lseek64(fd, dsize - (512 * 2), SEEK_SET) < 0) { | |
3386 | if (devname) | |
3387 | fprintf(stderr, Name | |
3388 | ": Cannot seek to anchor block on %s: %s\n", | |
3389 | devname, strerror(errno)); | |
3390 | return 1; | |
3391 | } | |
3392 | ||
3393 | if (posix_memalign((void**)&anchor, 512, 512) != 0) { | |
3394 | if (devname) | |
3395 | fprintf(stderr, | |
3396 | Name ": Failed to allocate imsm anchor buffer" | |
3397 | " on %s\n", devname); | |
3398 | return 1; | |
3399 | } | |
3400 | if (read(fd, anchor, 512) != 512) { | |
3401 | if (devname) | |
3402 | fprintf(stderr, | |
3403 | Name ": Cannot read anchor block on %s: %s\n", | |
3404 | devname, strerror(errno)); | |
3405 | free(anchor); | |
3406 | return 1; | |
3407 | } | |
3408 | ||
3409 | if (strncmp((char *) anchor->sig, MPB_SIGNATURE, MPB_SIG_LEN) != 0) { | |
3410 | if (devname) | |
3411 | fprintf(stderr, | |
3412 | Name ": no IMSM anchor on %s\n", devname); | |
3413 | free(anchor); | |
3414 | return 2; | |
3415 | } | |
3416 | ||
3417 | __free_imsm(super, 0); | |
3418 | /* reload capability and hba */ | |
3419 | ||
3420 | /* capability and hba must be updated with new super allocation */ | |
3421 | find_intel_hba_capability(fd, super, devname); | |
3422 | super->len = ROUND_UP(anchor->mpb_size, 512); | |
3423 | if (posix_memalign(&super->buf, 512, super->len) != 0) { | |
3424 | if (devname) | |
3425 | fprintf(stderr, | |
3426 | Name ": unable to allocate %zu byte mpb buffer\n", | |
3427 | super->len); | |
3428 | free(anchor); | |
3429 | return 2; | |
3430 | } | |
3431 | memcpy(super->buf, anchor, 512); | |
3432 | ||
3433 | sectors = mpb_sectors(anchor) - 1; | |
3434 | free(anchor); | |
3435 | ||
3436 | if (posix_memalign(&super->migr_rec_buf, 512, MIGR_REC_BUF_SIZE) != 0) { | |
3437 | fprintf(stderr, Name | |
3438 | ": %s could not allocate migr_rec buffer\n", __func__); | |
3439 | free(super->buf); | |
3440 | return 2; | |
3441 | } | |
3442 | ||
3443 | if (!sectors) { | |
3444 | check_sum = __gen_imsm_checksum(super->anchor); | |
3445 | if (check_sum != __le32_to_cpu(super->anchor->check_sum)) { | |
3446 | if (devname) | |
3447 | fprintf(stderr, | |
3448 | Name ": IMSM checksum %x != %x on %s\n", | |
3449 | check_sum, | |
3450 | __le32_to_cpu(super->anchor->check_sum), | |
3451 | devname); | |
3452 | return 2; | |
3453 | } | |
3454 | ||
3455 | return 0; | |
3456 | } | |
3457 | ||
3458 | /* read the extended mpb */ | |
3459 | if (lseek64(fd, dsize - (512 * (2 + sectors)), SEEK_SET) < 0) { | |
3460 | if (devname) | |
3461 | fprintf(stderr, | |
3462 | Name ": Cannot seek to extended mpb on %s: %s\n", | |
3463 | devname, strerror(errno)); | |
3464 | return 1; | |
3465 | } | |
3466 | ||
3467 | if ((unsigned)read(fd, super->buf + 512, super->len - 512) != super->len - 512) { | |
3468 | if (devname) | |
3469 | fprintf(stderr, | |
3470 | Name ": Cannot read extended mpb on %s: %s\n", | |
3471 | devname, strerror(errno)); | |
3472 | return 2; | |
3473 | } | |
3474 | ||
3475 | check_sum = __gen_imsm_checksum(super->anchor); | |
3476 | if (check_sum != __le32_to_cpu(super->anchor->check_sum)) { | |
3477 | if (devname) | |
3478 | fprintf(stderr, | |
3479 | Name ": IMSM checksum %x != %x on %s\n", | |
3480 | check_sum, __le32_to_cpu(super->anchor->check_sum), | |
3481 | devname); | |
3482 | return 3; | |
3483 | } | |
3484 | ||
3485 | /* FIXME the BBM log is disk specific so we cannot use this global | |
3486 | * buffer for all disks. Ok for now since we only look at the global | |
3487 | * bbm_log_size parameter to gate assembly | |
3488 | */ | |
3489 | super->bbm_log = __get_imsm_bbm_log(super->anchor); | |
3490 | ||
3491 | return 0; | |
3492 | } | |
3493 | ||
3494 | static int read_imsm_migr_rec(int fd, struct intel_super *super); | |
3495 | ||
3496 | static int | |
3497 | load_and_parse_mpb(int fd, struct intel_super *super, char *devname, int keep_fd) | |
3498 | { | |
3499 | int err; | |
3500 | ||
3501 | err = load_imsm_mpb(fd, super, devname); | |
3502 | if (err) | |
3503 | return err; | |
3504 | err = load_imsm_disk(fd, super, devname, keep_fd); | |
3505 | if (err) | |
3506 | return err; | |
3507 | err = parse_raid_devices(super); | |
3508 | ||
3509 | return err; | |
3510 | } | |
3511 | ||
3512 | static void __free_imsm_disk(struct dl *d) | |
3513 | { | |
3514 | if (d->fd >= 0) | |
3515 | close(d->fd); | |
3516 | if (d->devname) | |
3517 | free(d->devname); | |
3518 | if (d->e) | |
3519 | free(d->e); | |
3520 | free(d); | |
3521 | ||
3522 | } | |
3523 | ||
3524 | static void free_imsm_disks(struct intel_super *super) | |
3525 | { | |
3526 | struct dl *d; | |
3527 | ||
3528 | while (super->disks) { | |
3529 | d = super->disks; | |
3530 | super->disks = d->next; | |
3531 | __free_imsm_disk(d); | |
3532 | } | |
3533 | while (super->disk_mgmt_list) { | |
3534 | d = super->disk_mgmt_list; | |
3535 | super->disk_mgmt_list = d->next; | |
3536 | __free_imsm_disk(d); | |
3537 | } | |
3538 | while (super->missing) { | |
3539 | d = super->missing; | |
3540 | super->missing = d->next; | |
3541 | __free_imsm_disk(d); | |
3542 | } | |
3543 | ||
3544 | } | |
3545 | ||
3546 | /* free all the pieces hanging off of a super pointer */ | |
3547 | static void __free_imsm(struct intel_super *super, int free_disks) | |
3548 | { | |
3549 | struct intel_hba *elem, *next; | |
3550 | ||
3551 | if (super->buf) { | |
3552 | free(super->buf); | |
3553 | super->buf = NULL; | |
3554 | } | |
3555 | /* unlink capability description */ | |
3556 | super->orom = NULL; | |
3557 | if (super->migr_rec_buf) { | |
3558 | free(super->migr_rec_buf); | |
3559 | super->migr_rec_buf = NULL; | |
3560 | } | |
3561 | if (free_disks) | |
3562 | free_imsm_disks(super); | |
3563 | free_devlist(super); | |
3564 | elem = super->hba; | |
3565 | while (elem) { | |
3566 | if (elem->path) | |
3567 | free((void *)elem->path); | |
3568 | next = elem->next; | |
3569 | free(elem); | |
3570 | elem = next; | |
3571 | } | |
3572 | super->hba = NULL; | |
3573 | } | |
3574 | ||
3575 | static void free_imsm(struct intel_super *super) | |
3576 | { | |
3577 | __free_imsm(super, 1); | |
3578 | free(super); | |
3579 | } | |
3580 | ||
3581 | static void free_super_imsm(struct supertype *st) | |
3582 | { | |
3583 | struct intel_super *super = st->sb; | |
3584 | ||
3585 | if (!super) | |
3586 | return; | |
3587 | ||
3588 | free_imsm(super); | |
3589 | st->sb = NULL; | |
3590 | } | |
3591 | ||
3592 | static struct intel_super *alloc_super(void) | |
3593 | { | |
3594 | struct intel_super *super = malloc(sizeof(*super)); | |
3595 | ||
3596 | if (super) { | |
3597 | memset(super, 0, sizeof(*super)); | |
3598 | super->current_vol = -1; | |
3599 | super->create_offset = ~((__u32 ) 0); | |
3600 | } | |
3601 | return super; | |
3602 | } | |
3603 | ||
3604 | /* | |
3605 | * find and allocate hba and OROM/EFI based on valid fd of RAID component device | |
3606 | */ | |
3607 | static int find_intel_hba_capability(int fd, struct intel_super *super, char *devname) | |
3608 | { | |
3609 | struct sys_dev *hba_name; | |
3610 | int rv = 0; | |
3611 | ||
3612 | if ((fd < 0) || check_env("IMSM_NO_PLATFORM")) { | |
3613 | super->orom = NULL; | |
3614 | super->hba = NULL; | |
3615 | return 0; | |
3616 | } | |
3617 | hba_name = find_disk_attached_hba(fd, NULL); | |
3618 | if (!hba_name) { | |
3619 | if (devname) | |
3620 | fprintf(stderr, | |
3621 | Name ": %s is not attached to Intel(R) RAID controller.\n", | |
3622 | devname); | |
3623 | return 1; | |
3624 | } | |
3625 | rv = attach_hba_to_super(super, hba_name); | |
3626 | if (rv == 2) { | |
3627 | if (devname) { | |
3628 | struct intel_hba *hba = super->hba; | |
3629 | ||
3630 | fprintf(stderr, Name ": %s is attached to Intel(R) %s RAID " | |
3631 | "controller (%s),\n" | |
3632 | " but the container is assigned to Intel(R) " | |
3633 | "%s RAID controller (", | |
3634 | devname, | |
3635 | hba_name->path, | |
3636 | hba_name->pci_id ? : "Err!", | |
3637 | get_sys_dev_type(hba_name->type)); | |
3638 | ||
3639 | while (hba) { | |
3640 | fprintf(stderr, "%s", hba->pci_id ? : "Err!"); | |
3641 | if (hba->next) | |
3642 | fprintf(stderr, ", "); | |
3643 | hba = hba->next; | |
3644 | } | |
3645 | ||
3646 | fprintf(stderr, ").\n" | |
3647 | " Mixing devices attached to different controllers " | |
3648 | "is not allowed.\n"); | |
3649 | } | |
3650 | free_sys_dev(&hba_name); | |
3651 | return 2; | |
3652 | } | |
3653 | super->orom = find_imsm_capability(hba_name->type); | |
3654 | free_sys_dev(&hba_name); | |
3655 | if (!super->orom) | |
3656 | return 3; | |
3657 | return 0; | |
3658 | } | |
3659 | ||
3660 | /* find_missing - helper routine for load_super_imsm_all that identifies | |
3661 | * disks that have disappeared from the system. This routine relies on | |
3662 | * the mpb being uptodate, which it is at load time. | |
3663 | */ | |
3664 | static int find_missing(struct intel_super *super) | |
3665 | { | |
3666 | int i; | |
3667 | struct imsm_super *mpb = super->anchor; | |
3668 | struct dl *dl; | |
3669 | struct imsm_disk *disk; | |
3670 | ||
3671 | for (i = 0; i < mpb->num_disks; i++) { | |
3672 | disk = __get_imsm_disk(mpb, i); | |
3673 | dl = serial_to_dl(disk->serial, super); | |
3674 | if (dl) | |
3675 | continue; | |
3676 | ||
3677 | dl = malloc(sizeof(*dl)); | |
3678 | if (!dl) | |
3679 | return 1; | |
3680 | dl->major = 0; | |
3681 | dl->minor = 0; | |
3682 | dl->fd = -1; | |
3683 | dl->devname = strdup("missing"); | |
3684 | dl->index = i; | |
3685 | serialcpy(dl->serial, disk->serial); | |
3686 | dl->disk = *disk; | |
3687 | dl->e = NULL; | |
3688 | dl->next = super->missing; | |
3689 | super->missing = dl; | |
3690 | } | |
3691 | ||
3692 | return 0; | |
3693 | } | |
3694 | ||
3695 | #ifndef MDASSEMBLE | |
3696 | static struct intel_disk *disk_list_get(__u8 *serial, struct intel_disk *disk_list) | |
3697 | { | |
3698 | struct intel_disk *idisk = disk_list; | |
3699 | ||
3700 | while (idisk) { | |
3701 | if (serialcmp(idisk->disk.serial, serial) == 0) | |
3702 | break; | |
3703 | idisk = idisk->next; | |
3704 | } | |
3705 | ||
3706 | return idisk; | |
3707 | } | |
3708 | ||
3709 | static int __prep_thunderdome(struct intel_super **table, int tbl_size, | |
3710 | struct intel_super *super, | |
3711 | struct intel_disk **disk_list) | |
3712 | { | |
3713 | struct imsm_disk *d = &super->disks->disk; | |
3714 | struct imsm_super *mpb = super->anchor; | |
3715 | int i, j; | |
3716 | ||
3717 | for (i = 0; i < tbl_size; i++) { | |
3718 | struct imsm_super *tbl_mpb = table[i]->anchor; | |
3719 | struct imsm_disk *tbl_d = &table[i]->disks->disk; | |
3720 | ||
3721 | if (tbl_mpb->family_num == mpb->family_num) { | |
3722 | if (tbl_mpb->check_sum == mpb->check_sum) { | |
3723 | dprintf("%s: mpb from %d:%d matches %d:%d\n", | |
3724 | __func__, super->disks->major, | |
3725 | super->disks->minor, | |
3726 | table[i]->disks->major, | |
3727 | table[i]->disks->minor); | |
3728 | break; | |
3729 | } | |
3730 | ||
3731 | if (((is_configured(d) && !is_configured(tbl_d)) || | |
3732 | is_configured(d) == is_configured(tbl_d)) && | |
3733 | tbl_mpb->generation_num < mpb->generation_num) { | |
3734 | /* current version of the mpb is a | |
3735 | * better candidate than the one in | |
3736 | * super_table, but copy over "cross | |
3737 | * generational" status | |
3738 | */ | |
3739 | struct intel_disk *idisk; | |
3740 | ||
3741 | dprintf("%s: mpb from %d:%d replaces %d:%d\n", | |
3742 | __func__, super->disks->major, | |
3743 | super->disks->minor, | |
3744 | table[i]->disks->major, | |
3745 | table[i]->disks->minor); | |
3746 | ||
3747 | idisk = disk_list_get(tbl_d->serial, *disk_list); | |
3748 | if (idisk && is_failed(&idisk->disk)) | |
3749 | tbl_d->status |= FAILED_DISK; | |
3750 | break; | |
3751 | } else { | |
3752 | struct intel_disk *idisk; | |
3753 | struct imsm_disk *disk; | |
3754 | ||
3755 | /* tbl_mpb is more up to date, but copy | |
3756 | * over cross generational status before | |
3757 | * returning | |
3758 | */ | |
3759 | disk = __serial_to_disk(d->serial, mpb, NULL); | |
3760 | if (disk && is_failed(disk)) | |
3761 | d->status |= FAILED_DISK; | |
3762 | ||
3763 | idisk = disk_list_get(d->serial, *disk_list); | |
3764 | if (idisk) { | |
3765 | idisk->owner = i; | |
3766 | if (disk && is_configured(disk)) | |
3767 | idisk->disk.status |= CONFIGURED_DISK; | |
3768 | } | |
3769 | ||
3770 | dprintf("%s: mpb from %d:%d prefer %d:%d\n", | |
3771 | __func__, super->disks->major, | |
3772 | super->disks->minor, | |
3773 | table[i]->disks->major, | |
3774 | table[i]->disks->minor); | |
3775 | ||
3776 | return tbl_size; | |
3777 | } | |
3778 | } | |
3779 | } | |
3780 | ||
3781 | if (i >= tbl_size) | |
3782 | table[tbl_size++] = super; | |
3783 | else | |
3784 | table[i] = super; | |
3785 | ||
3786 | /* update/extend the merged list of imsm_disk records */ | |
3787 | for (j = 0; j < mpb->num_disks; j++) { | |
3788 | struct imsm_disk *disk = __get_imsm_disk(mpb, j); | |
3789 | struct intel_disk *idisk; | |
3790 | ||
3791 | idisk = disk_list_get(disk->serial, *disk_list); | |
3792 | if (idisk) { | |
3793 | idisk->disk.status |= disk->status; | |
3794 | if (is_configured(&idisk->disk) || | |
3795 | is_failed(&idisk->disk)) | |
3796 | idisk->disk.status &= ~(SPARE_DISK); | |
3797 | } else { | |
3798 | idisk = calloc(1, sizeof(*idisk)); | |
3799 | if (!idisk) | |
3800 | return -1; | |
3801 | idisk->owner = IMSM_UNKNOWN_OWNER; | |
3802 | idisk->disk = *disk; | |
3803 | idisk->next = *disk_list; | |
3804 | *disk_list = idisk; | |
3805 | } | |
3806 | ||
3807 | if (serialcmp(idisk->disk.serial, d->serial) == 0) | |
3808 | idisk->owner = i; | |
3809 | } | |
3810 | ||
3811 | return tbl_size; | |
3812 | } | |
3813 | ||
3814 | static struct intel_super * | |
3815 | validate_members(struct intel_super *super, struct intel_disk *disk_list, | |
3816 | const int owner) | |
3817 | { | |
3818 | struct imsm_super *mpb = super->anchor; | |
3819 | int ok_count = 0; | |
3820 | int i; | |
3821 | ||
3822 | for (i = 0; i < mpb->num_disks; i++) { | |
3823 | struct imsm_disk *disk = __get_imsm_disk(mpb, i); | |
3824 | struct intel_disk *idisk; | |
3825 | ||
3826 | idisk = disk_list_get(disk->serial, disk_list); | |
3827 | if (idisk) { | |
3828 | if (idisk->owner == owner || | |
3829 | idisk->owner == IMSM_UNKNOWN_OWNER) | |
3830 | ok_count++; | |
3831 | else | |
3832 | dprintf("%s: '%.16s' owner %d != %d\n", | |
3833 | __func__, disk->serial, idisk->owner, | |
3834 | owner); | |
3835 | } else { | |
3836 | dprintf("%s: unknown disk %x [%d]: %.16s\n", | |
3837 | __func__, __le32_to_cpu(mpb->family_num), i, | |
3838 | disk->serial); | |
3839 | break; | |
3840 | } | |
3841 | } | |
3842 | ||
3843 | if (ok_count == mpb->num_disks) | |
3844 | return super; | |
3845 | return NULL; | |
3846 | } | |
3847 | ||
3848 | static void show_conflicts(__u32 family_num, struct intel_super *super_list) | |
3849 | { | |
3850 | struct intel_super *s; | |
3851 | ||
3852 | for (s = super_list; s; s = s->next) { | |
3853 | if (family_num != s->anchor->family_num) | |
3854 | continue; | |
3855 | fprintf(stderr, "Conflict, offlining family %#x on '%s'\n", | |
3856 | __le32_to_cpu(family_num), s->disks->devname); | |
3857 | } | |
3858 | } | |
3859 | ||
3860 | static struct intel_super * | |
3861 | imsm_thunderdome(struct intel_super **super_list, int len) | |
3862 | { | |
3863 | struct intel_super *super_table[len]; | |
3864 | struct intel_disk *disk_list = NULL; | |
3865 | struct intel_super *champion, *spare; | |
3866 | struct intel_super *s, **del; | |
3867 | int tbl_size = 0; | |
3868 | int conflict; | |
3869 | int i; | |
3870 | ||
3871 | memset(super_table, 0, sizeof(super_table)); | |
3872 | for (s = *super_list; s; s = s->next) | |
3873 | tbl_size = __prep_thunderdome(super_table, tbl_size, s, &disk_list); | |
3874 | ||
3875 | for (i = 0; i < tbl_size; i++) { | |
3876 | struct imsm_disk *d; | |
3877 | struct intel_disk *idisk; | |
3878 | struct imsm_super *mpb = super_table[i]->anchor; | |
3879 | ||
3880 | s = super_table[i]; | |
3881 | d = &s->disks->disk; | |
3882 | ||
3883 | /* 'd' must appear in merged disk list for its | |
3884 | * configuration to be valid | |
3885 | */ | |
3886 | idisk = disk_list_get(d->serial, disk_list); | |
3887 | if (idisk && idisk->owner == i) | |
3888 | s = validate_members(s, disk_list, i); | |
3889 | else | |
3890 | s = NULL; | |
3891 | ||
3892 | if (!s) | |
3893 | dprintf("%s: marking family: %#x from %d:%d offline\n", | |
3894 | __func__, mpb->family_num, | |
3895 | super_table[i]->disks->major, | |
3896 | super_table[i]->disks->minor); | |
3897 | super_table[i] = s; | |
3898 | } | |
3899 | ||
3900 | /* This is where the mdadm implementation differs from the Windows | |
3901 | * driver which has no strict concept of a container. We can only | |
3902 | * assemble one family from a container, so when returning a prodigal | |
3903 | * array member to this system the code will not be able to disambiguate | |
3904 | * the container contents that should be assembled ("foreign" versus | |
3905 | * "local"). It requires user intervention to set the orig_family_num | |
3906 | * to a new value to establish a new container. The Windows driver in | |
3907 | * this situation fixes up the volume name in place and manages the | |
3908 | * foreign array as an independent entity. | |
3909 | */ | |
3910 | s = NULL; | |
3911 | spare = NULL; | |
3912 | conflict = 0; | |
3913 | for (i = 0; i < tbl_size; i++) { | |
3914 | struct intel_super *tbl_ent = super_table[i]; | |
3915 | int is_spare = 0; | |
3916 | ||
3917 | if (!tbl_ent) | |
3918 | continue; | |
3919 | ||
3920 | if (tbl_ent->anchor->num_raid_devs == 0) { | |
3921 | spare = tbl_ent; | |
3922 | is_spare = 1; | |
3923 | } | |
3924 | ||
3925 | if (s && !is_spare) { | |
3926 | show_conflicts(tbl_ent->anchor->family_num, *super_list); | |
3927 | conflict++; | |
3928 | } else if (!s && !is_spare) | |
3929 | s = tbl_ent; | |
3930 | } | |
3931 | ||
3932 | if (!s) | |
3933 | s = spare; | |
3934 | if (!s) { | |
3935 | champion = NULL; | |
3936 | goto out; | |
3937 | } | |
3938 | champion = s; | |
3939 | ||
3940 | if (conflict) | |
3941 | fprintf(stderr, "Chose family %#x on '%s', " | |
3942 | "assemble conflicts to new container with '--update=uuid'\n", | |
3943 | __le32_to_cpu(s->anchor->family_num), s->disks->devname); | |
3944 | ||
3945 | /* collect all dl's onto 'champion', and update them to | |
3946 | * champion's version of the status | |
3947 | */ | |
3948 | for (s = *super_list; s; s = s->next) { | |
3949 | struct imsm_super *mpb = champion->anchor; | |
3950 | struct dl *dl = s->disks; | |
3951 | ||
3952 | if (s == champion) | |
3953 | continue; | |
3954 | ||
3955 | for (i = 0; i < mpb->num_disks; i++) { | |
3956 | struct imsm_disk *disk; | |
3957 | ||
3958 | disk = __serial_to_disk(dl->serial, mpb, &dl->index); | |
3959 | if (disk) { | |
3960 | dl->disk = *disk; | |
3961 | /* only set index on disks that are a member of | |
3962 | * a populated contianer, i.e. one with | |
3963 | * raid_devs | |
3964 | */ | |
3965 | if (is_failed(&dl->disk)) | |
3966 | dl->index = -2; | |
3967 | else if (is_spare(&dl->disk)) | |
3968 | dl->index = -1; | |
3969 | break; | |
3970 | } | |
3971 | } | |
3972 | ||
3973 | if (i >= mpb->num_disks) { | |
3974 | struct intel_disk *idisk; | |
3975 | ||
3976 | idisk = disk_list_get(dl->serial, disk_list); | |
3977 | if (idisk && is_spare(&idisk->disk) && | |
3978 | !is_failed(&idisk->disk) && !is_configured(&idisk->disk)) | |
3979 | dl->index = -1; | |
3980 | else { | |
3981 | dl->index = -2; | |
3982 | continue; | |
3983 | } | |
3984 | } | |
3985 | ||
3986 | dl->next = champion->disks; | |
3987 | champion->disks = dl; | |
3988 | s->disks = NULL; | |
3989 | } | |
3990 | ||
3991 | /* delete 'champion' from super_list */ | |
3992 | for (del = super_list; *del; ) { | |
3993 | if (*del == champion) { | |
3994 | *del = (*del)->next; | |
3995 | break; | |
3996 | } else | |
3997 | del = &(*del)->next; | |
3998 | } | |
3999 | champion->next = NULL; | |
4000 | ||
4001 | out: | |
4002 | while (disk_list) { | |
4003 | struct intel_disk *idisk = disk_list; | |
4004 | ||
4005 | disk_list = disk_list->next; | |
4006 | free(idisk); | |
4007 | } | |
4008 | ||
4009 | return champion; | |
4010 | } | |
4011 | ||
4012 | static int load_super_imsm_all(struct supertype *st, int fd, void **sbp, | |
4013 | char *devname) | |
4014 | { | |
4015 | struct mdinfo *sra; | |
4016 | struct intel_super *super_list = NULL; | |
4017 | struct intel_super *super = NULL; | |
4018 | int devnum = fd2devnum(fd); | |
4019 | struct mdinfo *sd; | |
4020 | int retry; | |
4021 | int err = 0; | |
4022 | int i; | |
4023 | ||
4024 | /* check if 'fd' an opened container */ | |
4025 | sra = sysfs_read(fd, 0, GET_LEVEL|GET_VERSION|GET_DEVS|GET_STATE); | |
4026 | if (!sra) | |
4027 | return 1; | |
4028 | ||
4029 | if (sra->array.major_version != -1 || | |
4030 | sra->array.minor_version != -2 || | |
4031 | strcmp(sra->text_version, "imsm") != 0) { | |
4032 | err = 1; | |
4033 | goto error; | |
4034 | } | |
4035 | /* load all mpbs */ | |
4036 | for (sd = sra->devs, i = 0; sd; sd = sd->next, i++) { | |
4037 | struct intel_super *s = alloc_super(); | |
4038 | char nm[32]; | |
4039 | int dfd; | |
4040 | int rv; | |
4041 | ||
4042 | err = 1; | |
4043 | if (!s) | |
4044 | goto error; | |
4045 | s->next = super_list; | |
4046 | super_list = s; | |
4047 | ||
4048 | err = 2; | |
4049 | sprintf(nm, "%d:%d", sd->disk.major, sd->disk.minor); | |
4050 | dfd = dev_open(nm, O_RDWR); | |
4051 | if (dfd < 0) | |
4052 | goto error; | |
4053 | ||
4054 | rv = find_intel_hba_capability(dfd, s, devname); | |
4055 | /* no orom/efi or non-intel hba of the disk */ | |
4056 | if (rv != 0) | |
4057 | goto error; | |
4058 | ||
4059 | err = load_and_parse_mpb(dfd, s, NULL, 1); | |
4060 | ||
4061 | /* retry the load if we might have raced against mdmon */ | |
4062 | if (err == 3 && mdmon_running(devnum)) | |
4063 | for (retry = 0; retry < 3; retry++) { | |
4064 | usleep(3000); | |
4065 | err = load_and_parse_mpb(dfd, s, NULL, 1); | |
4066 | if (err != 3) | |
4067 | break; | |
4068 | } | |
4069 | if (err) | |
4070 | goto error; | |
4071 | } | |
4072 | ||
4073 | /* all mpbs enter, maybe one leaves */ | |
4074 | super = imsm_thunderdome(&super_list, i); | |
4075 | if (!super) { | |
4076 | err = 1; | |
4077 | goto error; | |
4078 | } | |
4079 | ||
4080 | if (find_missing(super) != 0) { | |
4081 | free_imsm(super); | |
4082 | err = 2; | |
4083 | goto error; | |
4084 | } | |
4085 | ||
4086 | /* load migration record */ | |
4087 | err = load_imsm_migr_rec(super, NULL); | |
4088 | if (err == -1) { | |
4089 | /* migration is in progress, | |
4090 | * but migr_rec cannot be loaded, | |
4091 | */ | |
4092 | err = 4; | |
4093 | goto error; | |
4094 | } | |
4095 | ||
4096 | /* Check migration compatibility */ | |
4097 | if ((err == 0) && (check_mpb_migr_compatibility(super) != 0)) { | |
4098 | fprintf(stderr, Name ": Unsupported migration detected"); | |
4099 | if (devname) | |
4100 | fprintf(stderr, " on %s\n", devname); | |
4101 | else | |
4102 | fprintf(stderr, " (IMSM).\n"); | |
4103 | ||
4104 | err = 5; | |
4105 | goto error; | |
4106 | } | |
4107 | ||
4108 | err = 0; | |
4109 | ||
4110 | error: | |
4111 | while (super_list) { | |
4112 | struct intel_super *s = super_list; | |
4113 | ||
4114 | super_list = super_list->next; | |
4115 | free_imsm(s); | |
4116 | } | |
4117 | sysfs_free(sra); | |
4118 | ||
4119 | if (err) | |
4120 | return err; | |
4121 | ||
4122 | *sbp = super; | |
4123 | st->container_dev = devnum; | |
4124 | if (err == 0 && st->ss == NULL) { | |
4125 | st->ss = &super_imsm; | |
4126 | st->minor_version = 0; | |
4127 | st->max_devs = IMSM_MAX_DEVICES; | |
4128 | } | |
4129 | return 0; | |
4130 | } | |
4131 | ||
4132 | static int load_container_imsm(struct supertype *st, int fd, char *devname) | |
4133 | { | |
4134 | return load_super_imsm_all(st, fd, &st->sb, devname); | |
4135 | } | |
4136 | #endif | |
4137 | ||
4138 | static int load_super_imsm(struct supertype *st, int fd, char *devname) | |
4139 | { | |
4140 | struct intel_super *super; | |
4141 | int rv; | |
4142 | ||
4143 | if (test_partition(fd)) | |
4144 | /* IMSM not allowed on partitions */ | |
4145 | return 1; | |
4146 | ||
4147 | free_super_imsm(st); | |
4148 | ||
4149 | super = alloc_super(); | |
4150 | if (!super) { | |
4151 | fprintf(stderr, | |
4152 | Name ": malloc of %zu failed.\n", | |
4153 | sizeof(*super)); | |
4154 | return 1; | |
4155 | } | |
4156 | /* Load hba and capabilities if they exist. | |
4157 | * But do not preclude loading metadata in case capabilities or hba are | |
4158 | * non-compliant and ignore_hw_compat is set. | |
4159 | */ | |
4160 | rv = find_intel_hba_capability(fd, super, devname); | |
4161 | /* no orom/efi or non-intel hba of the disk */ | |
4162 | if ((rv != 0) && (st->ignore_hw_compat == 0)) { | |
4163 | if (devname) | |
4164 | fprintf(stderr, | |
4165 | Name ": No OROM/EFI properties for %s\n", devname); | |
4166 | free_imsm(super); | |
4167 | return 2; | |
4168 | } | |
4169 | rv = load_and_parse_mpb(fd, super, devname, 0); | |
4170 | ||
4171 | if (rv) { | |
4172 | if (devname) | |
4173 | fprintf(stderr, | |
4174 | Name ": Failed to load all information " | |
4175 | "sections on %s\n", devname); | |
4176 | free_imsm(super); | |
4177 | return rv; | |
4178 | } | |
4179 | ||
4180 | st->sb = super; | |
4181 | if (st->ss == NULL) { | |
4182 | st->ss = &super_imsm; | |
4183 | st->minor_version = 0; | |
4184 | st->max_devs = IMSM_MAX_DEVICES; | |
4185 | } | |
4186 | ||
4187 | /* load migration record */ | |
4188 | if (load_imsm_migr_rec(super, NULL) == 0) { | |
4189 | /* Check for unsupported migration features */ | |
4190 | if (check_mpb_migr_compatibility(super) != 0) { | |
4191 | fprintf(stderr, | |
4192 | Name ": Unsupported migration detected"); | |
4193 | if (devname) | |
4194 | fprintf(stderr, " on %s\n", devname); | |
4195 | else | |
4196 | fprintf(stderr, " (IMSM).\n"); | |
4197 | return 3; | |
4198 | } | |
4199 | } | |
4200 | ||
4201 | return 0; | |
4202 | } | |
4203 | ||
4204 | static __u16 info_to_blocks_per_strip(mdu_array_info_t *info) | |
4205 | { | |
4206 | if (info->level == 1) | |
4207 | return 128; | |
4208 | return info->chunk_size >> 9; | |
4209 | } | |
4210 | ||
4211 | static __u32 info_to_num_data_stripes(mdu_array_info_t *info, int num_domains) | |
4212 | { | |
4213 | __u32 num_stripes; | |
4214 | ||
4215 | num_stripes = (info->size * 2) / info_to_blocks_per_strip(info); | |
4216 | num_stripes /= num_domains; | |
4217 | ||
4218 | return num_stripes; | |
4219 | } | |
4220 | ||
4221 | static __u32 info_to_blocks_per_member(mdu_array_info_t *info) | |
4222 | { | |
4223 | if (info->level == 1) | |
4224 | return info->size * 2; | |
4225 | else | |
4226 | return (info->size * 2) & ~(info_to_blocks_per_strip(info) - 1); | |
4227 | } | |
4228 | ||
4229 | static void imsm_update_version_info(struct intel_super *super) | |
4230 | { | |
4231 | /* update the version and attributes */ | |
4232 | struct imsm_super *mpb = super->anchor; | |
4233 | char *version; | |
4234 | struct imsm_dev *dev; | |
4235 | struct imsm_map *map; | |
4236 | int i; | |
4237 | ||
4238 | for (i = 0; i < mpb->num_raid_devs; i++) { | |
4239 | dev = get_imsm_dev(super, i); | |
4240 | map = get_imsm_map(dev, MAP_0); | |
4241 | if (__le32_to_cpu(dev->size_high) > 0) | |
4242 | mpb->attributes |= MPB_ATTRIB_2TB; | |
4243 | ||
4244 | /* FIXME detect when an array spans a port multiplier */ | |
4245 | #if 0 | |
4246 | mpb->attributes |= MPB_ATTRIB_PM; | |
4247 | #endif | |
4248 | ||
4249 | if (mpb->num_raid_devs > 1 || | |
4250 | mpb->attributes != MPB_ATTRIB_CHECKSUM_VERIFY) { | |
4251 | version = MPB_VERSION_ATTRIBS; | |
4252 | switch (get_imsm_raid_level(map)) { | |
4253 | case 0: mpb->attributes |= MPB_ATTRIB_RAID0; break; | |
4254 | case 1: mpb->attributes |= MPB_ATTRIB_RAID1; break; | |
4255 | case 10: mpb->attributes |= MPB_ATTRIB_RAID10; break; | |
4256 | case 5: mpb->attributes |= MPB_ATTRIB_RAID5; break; | |
4257 | } | |
4258 | } else { | |
4259 | if (map->num_members >= 5) | |
4260 | version = MPB_VERSION_5OR6_DISK_ARRAY; | |
4261 | else if (dev->status == DEV_CLONE_N_GO) | |
4262 | version = MPB_VERSION_CNG; | |
4263 | else if (get_imsm_raid_level(map) == 5) | |
4264 | version = MPB_VERSION_RAID5; | |
4265 | else if (map->num_members >= 3) | |
4266 | version = MPB_VERSION_3OR4_DISK_ARRAY; | |
4267 | else if (get_imsm_raid_level(map) == 1) | |
4268 | version = MPB_VERSION_RAID1; | |
4269 | else | |
4270 | version = MPB_VERSION_RAID0; | |
4271 | } | |
4272 | strcpy(((char *) mpb->sig) + strlen(MPB_SIGNATURE), version); | |
4273 | } | |
4274 | } | |
4275 | ||
4276 | static int check_name(struct intel_super *super, char *name, int quiet) | |
4277 | { | |
4278 | struct imsm_super *mpb = super->anchor; | |
4279 | char *reason = NULL; | |
4280 | int i; | |
4281 | ||
4282 | if (strlen(name) > MAX_RAID_SERIAL_LEN) | |
4283 | reason = "must be 16 characters or less"; | |
4284 | ||
4285 | for (i = 0; i < mpb->num_raid_devs; i++) { | |
4286 | struct imsm_dev *dev = get_imsm_dev(super, i); | |
4287 | ||
4288 | if (strncmp((char *) dev->volume, name, MAX_RAID_SERIAL_LEN) == 0) { | |
4289 | reason = "already exists"; | |
4290 | break; | |
4291 | } | |
4292 | } | |
4293 | ||
4294 | if (reason && !quiet) | |
4295 | fprintf(stderr, Name ": imsm volume name %s\n", reason); | |
4296 | ||
4297 | return !reason; | |
4298 | } | |
4299 | ||
4300 | static int init_super_imsm_volume(struct supertype *st, mdu_array_info_t *info, | |
4301 | unsigned long long size, char *name, | |
4302 | char *homehost, int *uuid) | |
4303 | { | |
4304 | /* We are creating a volume inside a pre-existing container. | |
4305 | * so st->sb is already set. | |
4306 | */ | |
4307 | struct intel_super *super = st->sb; | |
4308 | struct imsm_super *mpb = super->anchor; | |
4309 | struct intel_dev *dv; | |
4310 | struct imsm_dev *dev; | |
4311 | struct imsm_vol *vol; | |
4312 | struct imsm_map *map; | |
4313 | int idx = mpb->num_raid_devs; | |
4314 | int i; | |
4315 | unsigned long long array_blocks; | |
4316 | size_t size_old, size_new; | |
4317 | __u32 num_data_stripes; | |
4318 | ||
4319 | if (super->orom && mpb->num_raid_devs >= super->orom->vpa) { | |
4320 | fprintf(stderr, Name": This imsm-container already has the " | |
4321 | "maximum of %d volumes\n", super->orom->vpa); | |
4322 | return 0; | |
4323 | } | |
4324 | ||
4325 | /* ensure the mpb is large enough for the new data */ | |
4326 | size_old = __le32_to_cpu(mpb->mpb_size); | |
4327 | size_new = disks_to_mpb_size(info->nr_disks); | |
4328 | if (size_new > size_old) { | |
4329 | void *mpb_new; | |
4330 | size_t size_round = ROUND_UP(size_new, 512); | |
4331 | ||
4332 | if (posix_memalign(&mpb_new, 512, size_round) != 0) { | |
4333 | fprintf(stderr, Name": could not allocate new mpb\n"); | |
4334 | return 0; | |
4335 | } | |
4336 | if (posix_memalign(&super->migr_rec_buf, 512, | |
4337 | MIGR_REC_BUF_SIZE) != 0) { | |
4338 | fprintf(stderr, Name | |
4339 | ": %s could not allocate migr_rec buffer\n", | |
4340 | __func__); | |
4341 | free(super->buf); | |
4342 | free(super); | |
4343 | free(mpb_new); | |
4344 | return 0; | |
4345 | } | |
4346 | memcpy(mpb_new, mpb, size_old); | |
4347 | free(mpb); | |
4348 | mpb = mpb_new; | |
4349 | super->anchor = mpb_new; | |
4350 | mpb->mpb_size = __cpu_to_le32(size_new); | |
4351 | memset(mpb_new + size_old, 0, size_round - size_old); | |
4352 | } | |
4353 | super->current_vol = idx; | |
4354 | ||
4355 | /* handle 'failed_disks' by either: | |
4356 | * a) create dummy disk entries in the table if this the first | |
4357 | * volume in the array. We add them here as this is the only | |
4358 | * opportunity to add them. add_to_super_imsm_volume() | |
4359 | * handles the non-failed disks and continues incrementing | |
4360 | * mpb->num_disks. | |
4361 | * b) validate that 'failed_disks' matches the current number | |
4362 | * of missing disks if the container is populated | |
4363 | */ | |
4364 | if (super->current_vol == 0) { | |
4365 | mpb->num_disks = 0; | |
4366 | for (i = 0; i < info->failed_disks; i++) { | |
4367 | struct imsm_disk *disk; | |
4368 | ||
4369 | mpb->num_disks++; | |
4370 | disk = __get_imsm_disk(mpb, i); | |
4371 | disk->status = CONFIGURED_DISK | FAILED_DISK; | |
4372 | disk->scsi_id = __cpu_to_le32(~(__u32)0); | |
4373 | snprintf((char *) disk->serial, MAX_RAID_SERIAL_LEN, | |
4374 | "missing:%d", i); | |
4375 | } | |
4376 | find_missing(super); | |
4377 | } else { | |
4378 | int missing = 0; | |
4379 | struct dl *d; | |
4380 | ||
4381 | for (d = super->missing; d; d = d->next) | |
4382 | missing++; | |
4383 | if (info->failed_disks > missing) { | |
4384 | fprintf(stderr, Name": unable to add 'missing' disk to container\n"); | |
4385 | return 0; | |
4386 | } | |
4387 | } | |
4388 | ||
4389 | if (!check_name(super, name, 0)) | |
4390 | return 0; | |
4391 | dv = malloc(sizeof(*dv)); | |
4392 | if (!dv) { | |
4393 | fprintf(stderr, Name ": failed to allocate device list entry\n"); | |
4394 | return 0; | |
4395 | } | |
4396 | dev = calloc(1, sizeof(*dev) + sizeof(__u32) * (info->raid_disks - 1)); | |
4397 | if (!dev) { | |
4398 | free(dv); | |
4399 | fprintf(stderr, Name": could not allocate raid device\n"); | |
4400 | return 0; | |
4401 | } | |
4402 | ||
4403 | strncpy((char *) dev->volume, name, MAX_RAID_SERIAL_LEN); | |
4404 | if (info->level == 1) | |
4405 | array_blocks = info_to_blocks_per_member(info); | |
4406 | else | |
4407 | array_blocks = calc_array_size(info->level, info->raid_disks, | |
4408 | info->layout, info->chunk_size, | |
4409 | info->size*2); | |
4410 | /* round array size down to closest MB */ | |
4411 | array_blocks = (array_blocks >> SECT_PER_MB_SHIFT) << SECT_PER_MB_SHIFT; | |
4412 | ||
4413 | dev->size_low = __cpu_to_le32((__u32) array_blocks); | |
4414 | dev->size_high = __cpu_to_le32((__u32) (array_blocks >> 32)); | |
4415 | dev->status = (DEV_READ_COALESCING | DEV_WRITE_COALESCING); | |
4416 | vol = &dev->vol; | |
4417 | vol->migr_state = 0; | |
4418 | set_migr_type(dev, MIGR_INIT); | |
4419 | vol->dirty = !info->state; | |
4420 | vol->curr_migr_unit = 0; | |
4421 | map = get_imsm_map(dev, MAP_0); | |
4422 | map->pba_of_lba0 = __cpu_to_le32(super->create_offset); | |
4423 | map->blocks_per_member = __cpu_to_le32(info_to_blocks_per_member(info)); | |
4424 | map->blocks_per_strip = __cpu_to_le16(info_to_blocks_per_strip(info)); | |
4425 | map->failed_disk_num = ~0; | |
4426 | if (info->level > 0) | |
4427 | map->map_state = IMSM_T_STATE_UNINITIALIZED; | |
4428 | else | |
4429 | map->map_state = info->failed_disks ? IMSM_T_STATE_FAILED : | |
4430 | IMSM_T_STATE_NORMAL; | |
4431 | map->ddf = 1; | |
4432 | ||
4433 | if (info->level == 1 && info->raid_disks > 2) { | |
4434 | free(dev); | |
4435 | free(dv); | |
4436 | fprintf(stderr, Name": imsm does not support more than 2 disks" | |
4437 | "in a raid1 volume\n"); | |
4438 | return 0; | |
4439 | } | |
4440 | ||
4441 | map->raid_level = info->level; | |
4442 | if (info->level == 10) { | |
4443 | map->raid_level = 1; | |
4444 | map->num_domains = info->raid_disks / 2; | |
4445 | } else if (info->level == 1) | |
4446 | map->num_domains = info->raid_disks; | |
4447 | else | |
4448 | map->num_domains = 1; | |
4449 | ||
4450 | num_data_stripes = info_to_num_data_stripes(info, map->num_domains); | |
4451 | map->num_data_stripes = __cpu_to_le32(num_data_stripes); | |
4452 | ||
4453 | map->num_members = info->raid_disks; | |
4454 | for (i = 0; i < map->num_members; i++) { | |
4455 | /* initialized in add_to_super */ | |
4456 | set_imsm_ord_tbl_ent(map, i, IMSM_ORD_REBUILD); | |
4457 | } | |
4458 | mpb->num_raid_devs++; | |
4459 | ||
4460 | dv->dev = dev; | |
4461 | dv->index = super->current_vol; | |
4462 | dv->next = super->devlist; | |
4463 | super->devlist = dv; | |
4464 | ||
4465 | imsm_update_version_info(super); | |
4466 | ||
4467 | return 1; | |
4468 | } | |
4469 | ||
4470 | static int init_super_imsm(struct supertype *st, mdu_array_info_t *info, | |
4471 | unsigned long long size, char *name, | |
4472 | char *homehost, int *uuid) | |
4473 | { | |
4474 | /* This is primarily called by Create when creating a new array. | |
4475 | * We will then get add_to_super called for each component, and then | |
4476 | * write_init_super called to write it out to each device. | |
4477 | * For IMSM, Create can create on fresh devices or on a pre-existing | |
4478 | * array. | |
4479 | * To create on a pre-existing array a different method will be called. | |
4480 | * This one is just for fresh drives. | |
4481 | */ | |
4482 | struct intel_super *super; | |
4483 | struct imsm_super *mpb; | |
4484 | size_t mpb_size; | |
4485 | char *version; | |
4486 | ||
4487 | if (st->sb) | |
4488 | return init_super_imsm_volume(st, info, size, name, homehost, uuid); | |
4489 | ||
4490 | if (info) | |
4491 | mpb_size = disks_to_mpb_size(info->nr_disks); | |
4492 | else | |
4493 | mpb_size = 512; | |
4494 | ||
4495 | super = alloc_super(); | |
4496 | if (super && posix_memalign(&super->buf, 512, mpb_size) != 0) { | |
4497 | free(super); | |
4498 | super = NULL; | |
4499 | } | |
4500 | if (!super) { | |
4501 | fprintf(stderr, Name | |
4502 | ": %s could not allocate superblock\n", __func__); | |
4503 | return 0; | |
4504 | } | |
4505 | if (posix_memalign(&super->migr_rec_buf, 512, MIGR_REC_BUF_SIZE) != 0) { | |
4506 | fprintf(stderr, Name | |
4507 | ": %s could not allocate migr_rec buffer\n", __func__); | |
4508 | free(super->buf); | |
4509 | free(super); | |
4510 | return 0; | |
4511 | } | |
4512 | memset(super->buf, 0, mpb_size); | |
4513 | mpb = super->buf; | |
4514 | mpb->mpb_size = __cpu_to_le32(mpb_size); | |
4515 | st->sb = super; | |
4516 | ||
4517 | if (info == NULL) { | |
4518 | /* zeroing superblock */ | |
4519 | return 0; | |
4520 | } | |
4521 | ||
4522 | mpb->attributes = MPB_ATTRIB_CHECKSUM_VERIFY; | |
4523 | ||
4524 | version = (char *) mpb->sig; | |
4525 | strcpy(version, MPB_SIGNATURE); | |
4526 | version += strlen(MPB_SIGNATURE); | |
4527 | strcpy(version, MPB_VERSION_RAID0); | |
4528 | ||
4529 | return 1; | |
4530 | } | |
4531 | ||
4532 | #ifndef MDASSEMBLE | |
4533 | static int add_to_super_imsm_volume(struct supertype *st, mdu_disk_info_t *dk, | |
4534 | int fd, char *devname) | |
4535 | { | |
4536 | struct intel_super *super = st->sb; | |
4537 | struct imsm_super *mpb = super->anchor; | |
4538 | struct imsm_disk *_disk; | |
4539 | struct imsm_dev *dev; | |
4540 | struct imsm_map *map; | |
4541 | struct dl *dl, *df; | |
4542 | int slot; | |
4543 | ||
4544 | dev = get_imsm_dev(super, super->current_vol); | |
4545 | map = get_imsm_map(dev, MAP_0); | |
4546 | ||
4547 | if (! (dk->state & (1<<MD_DISK_SYNC))) { | |
4548 | fprintf(stderr, Name ": %s: Cannot add spare devices to IMSM volume\n", | |
4549 | devname); | |
4550 | return 1; | |
4551 | } | |
4552 | ||
4553 | if (fd == -1) { | |
4554 | /* we're doing autolayout so grab the pre-marked (in | |
4555 | * validate_geometry) raid_disk | |
4556 | */ | |
4557 | for (dl = super->disks; dl; dl = dl->next) | |
4558 | if (dl->raiddisk == dk->raid_disk) | |
4559 | break; | |
4560 | } else { | |
4561 | for (dl = super->disks; dl ; dl = dl->next) | |
4562 | if (dl->major == dk->major && | |
4563 | dl->minor == dk->minor) | |
4564 | break; | |
4565 | } | |
4566 | ||
4567 | if (!dl) { | |
4568 | fprintf(stderr, Name ": %s is not a member of the same container\n", devname); | |
4569 | return 1; | |
4570 | } | |
4571 | ||
4572 | /* add a pristine spare to the metadata */ | |
4573 | if (dl->index < 0) { | |
4574 | dl->index = super->anchor->num_disks; | |
4575 | super->anchor->num_disks++; | |
4576 | } | |
4577 | /* Check the device has not already been added */ | |
4578 | slot = get_imsm_disk_slot(map, dl->index); | |
4579 | if (slot >= 0 && | |
4580 | (get_imsm_ord_tbl_ent(dev, slot, MAP_X) & IMSM_ORD_REBUILD) == 0) { | |
4581 | fprintf(stderr, Name ": %s has been included in this array twice\n", | |
4582 | devname); | |
4583 | return 1; | |
4584 | } | |
4585 | set_imsm_ord_tbl_ent(map, dk->raid_disk, dl->index); | |
4586 | dl->disk.status = CONFIGURED_DISK; | |
4587 | ||
4588 | /* update size of 'missing' disks to be at least as large as the | |
4589 | * largest acitve member (we only have dummy missing disks when | |
4590 | * creating the first volume) | |
4591 | */ | |
4592 | if (super->current_vol == 0) { | |
4593 | for (df = super->missing; df; df = df->next) { | |
4594 | if (dl->disk.total_blocks > df->disk.total_blocks) | |
4595 | df->disk.total_blocks = dl->disk.total_blocks; | |
4596 | _disk = __get_imsm_disk(mpb, df->index); | |
4597 | *_disk = df->disk; | |
4598 | } | |
4599 | } | |
4600 | ||
4601 | /* refresh unset/failed slots to point to valid 'missing' entries */ | |
4602 | for (df = super->missing; df; df = df->next) | |
4603 | for (slot = 0; slot < mpb->num_disks; slot++) { | |
4604 | __u32 ord = get_imsm_ord_tbl_ent(dev, slot, MAP_X); | |
4605 | ||
4606 | if ((ord & IMSM_ORD_REBUILD) == 0) | |
4607 | continue; | |
4608 | set_imsm_ord_tbl_ent(map, slot, df->index | IMSM_ORD_REBUILD); | |
4609 | if (is_gen_migration(dev)) { | |
4610 | struct imsm_map *map2 = get_imsm_map(dev, | |
4611 | MAP_1); | |
4612 | int slot2 = get_imsm_disk_slot(map2, df->index); | |
4613 | if ((slot2 < map2->num_members) && | |
4614 | (slot2 >= 0)) { | |
4615 | __u32 ord2 = get_imsm_ord_tbl_ent(dev, | |
4616 | slot2, | |
4617 | MAP_1); | |
4618 | if ((unsigned)df->index == | |
4619 | ord_to_idx(ord2)) | |
4620 | set_imsm_ord_tbl_ent(map2, | |
4621 | slot2, | |
4622 | df->index | | |
4623 | IMSM_ORD_REBUILD); | |
4624 | } | |
4625 | } | |
4626 | dprintf("set slot:%d to missing disk:%d\n", slot, df->index); | |
4627 | break; | |
4628 | } | |
4629 | ||
4630 | /* if we are creating the first raid device update the family number */ | |
4631 | if (super->current_vol == 0) { | |
4632 | __u32 sum; | |
4633 | struct imsm_dev *_dev = __get_imsm_dev(mpb, 0); | |
4634 | ||
4635 | _disk = __get_imsm_disk(mpb, dl->index); | |
4636 | if (!_dev || !_disk) { | |
4637 | fprintf(stderr, Name ": BUG mpb setup error\n"); | |
4638 | return 1; | |
4639 | } | |
4640 | *_dev = *dev; | |
4641 | *_disk = dl->disk; | |
4642 | sum = random32(); | |
4643 | sum += __gen_imsm_checksum(mpb); | |
4644 | mpb->family_num = __cpu_to_le32(sum); | |
4645 | mpb->orig_family_num = mpb->family_num; | |
4646 | } | |
4647 | super->current_disk = dl; | |
4648 | return 0; | |
4649 | } | |
4650 | ||
4651 | /* mark_spare() | |
4652 | * Function marks disk as spare and restores disk serial | |
4653 | * in case it was previously marked as failed by takeover operation | |
4654 | * reruns: | |
4655 | * -1 : critical error | |
4656 | * 0 : disk is marked as spare but serial is not set | |
4657 | * 1 : success | |
4658 | */ | |
4659 | int mark_spare(struct dl *disk) | |
4660 | { | |
4661 | __u8 serial[MAX_RAID_SERIAL_LEN]; | |
4662 | int ret_val = -1; | |
4663 | ||
4664 | if (!disk) | |
4665 | return ret_val; | |
4666 | ||
4667 | ret_val = 0; | |
4668 | if (!imsm_read_serial(disk->fd, NULL, serial)) { | |
4669 | /* Restore disk serial number, because takeover marks disk | |
4670 | * as failed and adds to serial ':0' before it becomes | |
4671 | * a spare disk. | |
4672 | */ | |
4673 | serialcpy(disk->serial, serial); | |
4674 | serialcpy(disk->disk.serial, serial); | |
4675 | ret_val = 1; | |
4676 | } | |
4677 | disk->disk.status = SPARE_DISK; | |
4678 | disk->index = -1; | |
4679 | ||
4680 | return ret_val; | |
4681 | } | |
4682 | ||
4683 | static int add_to_super_imsm(struct supertype *st, mdu_disk_info_t *dk, | |
4684 | int fd, char *devname) | |
4685 | { | |
4686 | struct intel_super *super = st->sb; | |
4687 | struct dl *dd; | |
4688 | unsigned long long size; | |
4689 | __u32 id; | |
4690 | int rv; | |
4691 | struct stat stb; | |
4692 | ||
4693 | /* If we are on an RAID enabled platform check that the disk is | |
4694 | * attached to the raid controller. | |
4695 | * We do not need to test disks attachment for container based additions, | |
4696 | * they shall be already tested when container was created/assembled. | |
4697 | */ | |
4698 | rv = find_intel_hba_capability(fd, super, devname); | |
4699 | /* no orom/efi or non-intel hba of the disk */ | |
4700 | if (rv != 0) { | |
4701 | dprintf("capability: %p fd: %d ret: %d\n", | |
4702 | super->orom, fd, rv); | |
4703 | return 1; | |
4704 | } | |
4705 | ||
4706 | if (super->current_vol >= 0) | |
4707 | return add_to_super_imsm_volume(st, dk, fd, devname); | |
4708 | ||
4709 | fstat(fd, &stb); | |
4710 | dd = malloc(sizeof(*dd)); | |
4711 | if (!dd) { | |
4712 | fprintf(stderr, | |
4713 | Name ": malloc failed %s:%d.\n", __func__, __LINE__); | |
4714 | return 1; | |
4715 | } | |
4716 | memset(dd, 0, sizeof(*dd)); | |
4717 | dd->major = major(stb.st_rdev); | |
4718 | dd->minor = minor(stb.st_rdev); | |
4719 | dd->devname = devname ? strdup(devname) : NULL; | |
4720 | dd->fd = fd; | |
4721 | dd->e = NULL; | |
4722 | dd->action = DISK_ADD; | |
4723 | rv = imsm_read_serial(fd, devname, dd->serial); | |
4724 | if (rv) { | |
4725 | fprintf(stderr, | |
4726 | Name ": failed to retrieve scsi serial, aborting\n"); | |
4727 | free(dd); | |
4728 | abort(); | |
4729 | } | |
4730 | ||
4731 | get_dev_size(fd, NULL, &size); | |
4732 | size /= 512; | |
4733 | serialcpy(dd->disk.serial, dd->serial); | |
4734 | dd->disk.total_blocks = __cpu_to_le32(size); | |
4735 | mark_spare(dd); | |
4736 | if (sysfs_disk_to_scsi_id(fd, &id) == 0) | |
4737 | dd->disk.scsi_id = __cpu_to_le32(id); | |
4738 | else | |
4739 | dd->disk.scsi_id = __cpu_to_le32(0); | |
4740 | ||
4741 | if (st->update_tail) { | |
4742 | dd->next = super->disk_mgmt_list; | |
4743 | super->disk_mgmt_list = dd; | |
4744 | } else { | |
4745 | dd->next = super->disks; | |
4746 | super->disks = dd; | |
4747 | super->updates_pending++; | |
4748 | } | |
4749 | ||
4750 | return 0; | |
4751 | } | |
4752 | ||
4753 | ||
4754 | static int remove_from_super_imsm(struct supertype *st, mdu_disk_info_t *dk) | |
4755 | { | |
4756 | struct intel_super *super = st->sb; | |
4757 | struct dl *dd; | |
4758 | ||
4759 | /* remove from super works only in mdmon - for communication | |
4760 | * manager - monitor. Check if communication memory buffer | |
4761 | * is prepared. | |
4762 | */ | |
4763 | if (!st->update_tail) { | |
4764 | fprintf(stderr, | |
4765 | Name ": %s shall be used in mdmon context only" | |
4766 | "(line %d).\n", __func__, __LINE__); | |
4767 | return 1; | |
4768 | } | |
4769 | dd = malloc(sizeof(*dd)); | |
4770 | if (!dd) { | |
4771 | fprintf(stderr, | |
4772 | Name ": malloc failed %s:%d.\n", __func__, __LINE__); | |
4773 | return 1; | |
4774 | } | |
4775 | memset(dd, 0, sizeof(*dd)); | |
4776 | dd->major = dk->major; | |
4777 | dd->minor = dk->minor; | |
4778 | dd->fd = -1; | |
4779 | mark_spare(dd); | |
4780 | dd->action = DISK_REMOVE; | |
4781 | ||
4782 | dd->next = super->disk_mgmt_list; | |
4783 | super->disk_mgmt_list = dd; | |
4784 | ||
4785 | ||
4786 | return 0; | |
4787 | } | |
4788 | ||
4789 | static int store_imsm_mpb(int fd, struct imsm_super *mpb); | |
4790 | ||
4791 | static union { | |
4792 | char buf[512]; | |
4793 | struct imsm_super anchor; | |
4794 | } spare_record __attribute__ ((aligned(512))); | |
4795 | ||
4796 | /* spare records have their own family number and do not have any defined raid | |
4797 | * devices | |
4798 | */ | |
4799 | static int write_super_imsm_spares(struct intel_super *super, int doclose) | |
4800 | { | |
4801 | struct imsm_super *mpb = super->anchor; | |
4802 | struct imsm_super *spare = &spare_record.anchor; | |
4803 | __u32 sum; | |
4804 | struct dl *d; | |
4805 | ||
4806 | spare->mpb_size = __cpu_to_le32(sizeof(struct imsm_super)), | |
4807 | spare->generation_num = __cpu_to_le32(1UL), | |
4808 | spare->attributes = MPB_ATTRIB_CHECKSUM_VERIFY; | |
4809 | spare->num_disks = 1, | |
4810 | spare->num_raid_devs = 0, | |
4811 | spare->cache_size = mpb->cache_size, | |
4812 | spare->pwr_cycle_count = __cpu_to_le32(1), | |
4813 | ||
4814 | snprintf((char *) spare->sig, MAX_SIGNATURE_LENGTH, | |
4815 | MPB_SIGNATURE MPB_VERSION_RAID0); | |
4816 | ||
4817 | for (d = super->disks; d; d = d->next) { | |
4818 | if (d->index != -1) | |
4819 | continue; | |
4820 | ||
4821 | spare->disk[0] = d->disk; | |
4822 | sum = __gen_imsm_checksum(spare); | |
4823 | spare->family_num = __cpu_to_le32(sum); | |
4824 | spare->orig_family_num = 0; | |
4825 | sum = __gen_imsm_checksum(spare); | |
4826 | spare->check_sum = __cpu_to_le32(sum); | |
4827 | ||
4828 | if (store_imsm_mpb(d->fd, spare)) { | |
4829 | fprintf(stderr, "%s: failed for device %d:%d %s\n", | |
4830 | __func__, d->major, d->minor, strerror(errno)); | |
4831 | return 1; | |
4832 | } | |
4833 | if (doclose) { | |
4834 | close(d->fd); | |
4835 | d->fd = -1; | |
4836 | } | |
4837 | } | |
4838 | ||
4839 | return 0; | |
4840 | } | |
4841 | ||
4842 | static int write_super_imsm(struct supertype *st, int doclose) | |
4843 | { | |
4844 | struct intel_super *super = st->sb; | |
4845 | struct imsm_super *mpb = super->anchor; | |
4846 | struct dl *d; | |
4847 | __u32 generation; | |
4848 | __u32 sum; | |
4849 | int spares = 0; | |
4850 | int i; | |
4851 | __u32 mpb_size = sizeof(struct imsm_super) - sizeof(struct imsm_disk); | |
4852 | int num_disks = 0; | |
4853 | int clear_migration_record = 1; | |
4854 | ||
4855 | /* 'generation' is incremented everytime the metadata is written */ | |
4856 | generation = __le32_to_cpu(mpb->generation_num); | |
4857 | generation++; | |
4858 | mpb->generation_num = __cpu_to_le32(generation); | |
4859 | ||
4860 | /* fix up cases where previous mdadm releases failed to set | |
4861 | * orig_family_num | |
4862 | */ | |
4863 | if (mpb->orig_family_num == 0) | |
4864 | mpb->orig_family_num = mpb->family_num; | |
4865 | ||
4866 | for (d = super->disks; d; d = d->next) { | |
4867 | if (d->index == -1) | |
4868 | spares++; | |
4869 | else { | |
4870 | mpb->disk[d->index] = d->disk; | |
4871 | num_disks++; | |
4872 | } | |
4873 | } | |
4874 | for (d = super->missing; d; d = d->next) { | |
4875 | mpb->disk[d->index] = d->disk; | |
4876 | num_disks++; | |
4877 | } | |
4878 | mpb->num_disks = num_disks; | |
4879 | mpb_size += sizeof(struct imsm_disk) * mpb->num_disks; | |
4880 | ||
4881 | for (i = 0; i < mpb->num_raid_devs; i++) { | |
4882 | struct imsm_dev *dev = __get_imsm_dev(mpb, i); | |
4883 | struct imsm_dev *dev2 = get_imsm_dev(super, i); | |
4884 | if (dev && dev2) { | |
4885 | imsm_copy_dev(dev, dev2); | |
4886 | mpb_size += sizeof_imsm_dev(dev, 0); | |
4887 | } | |
4888 | if (is_gen_migration(dev2)) | |
4889 | clear_migration_record = 0; | |
4890 | } | |
4891 | mpb_size += __le32_to_cpu(mpb->bbm_log_size); | |
4892 | mpb->mpb_size = __cpu_to_le32(mpb_size); | |
4893 | ||
4894 | /* recalculate checksum */ | |
4895 | sum = __gen_imsm_checksum(mpb); | |
4896 | mpb->check_sum = __cpu_to_le32(sum); | |
4897 | ||
4898 | if (clear_migration_record) | |
4899 | memset(super->migr_rec_buf, 0, MIGR_REC_BUF_SIZE); | |
4900 | ||
4901 | /* write the mpb for disks that compose raid devices */ | |
4902 | for (d = super->disks; d ; d = d->next) { | |
4903 | if (d->index < 0 || is_failed(&d->disk)) | |
4904 | continue; | |
4905 | if (store_imsm_mpb(d->fd, mpb)) | |
4906 | fprintf(stderr, "%s: failed for device %d:%d %s\n", | |
4907 | __func__, d->major, d->minor, strerror(errno)); | |
4908 | if (clear_migration_record) { | |
4909 | unsigned long long dsize; | |
4910 | ||
4911 | get_dev_size(d->fd, NULL, &dsize); | |
4912 | if (lseek64(d->fd, dsize - 512, SEEK_SET) >= 0) { | |
4913 | if (write(d->fd, super->migr_rec_buf, | |
4914 | MIGR_REC_BUF_SIZE) != MIGR_REC_BUF_SIZE) | |
4915 | perror("Write migr_rec failed"); | |
4916 | } | |
4917 | } | |
4918 | if (doclose) { | |
4919 | close(d->fd); | |
4920 | d->fd = -1; | |
4921 | } | |
4922 | } | |
4923 | ||
4924 | if (spares) | |
4925 | return write_super_imsm_spares(super, doclose); | |
4926 | ||
4927 | return 0; | |
4928 | } | |
4929 | ||
4930 | ||
4931 | static int create_array(struct supertype *st, int dev_idx) | |
4932 | { | |
4933 | size_t len; | |
4934 | struct imsm_update_create_array *u; | |
4935 | struct intel_super *super = st->sb; | |
4936 | struct imsm_dev *dev = get_imsm_dev(super, dev_idx); | |
4937 | struct imsm_map *map = get_imsm_map(dev, MAP_0); | |
4938 | struct disk_info *inf; | |
4939 | struct imsm_disk *disk; | |
4940 | int i; | |
4941 | ||
4942 | len = sizeof(*u) - sizeof(*dev) + sizeof_imsm_dev(dev, 0) + | |
4943 | sizeof(*inf) * map->num_members; | |
4944 | u = malloc(len); | |
4945 | if (!u) { | |
4946 | fprintf(stderr, "%s: failed to allocate update buffer\n", | |
4947 | __func__); | |
4948 | return 1; | |
4949 | } | |
4950 | ||
4951 | u->type = update_create_array; | |
4952 | u->dev_idx = dev_idx; | |
4953 | imsm_copy_dev(&u->dev, dev); | |
4954 | inf = get_disk_info(u); | |
4955 | for (i = 0; i < map->num_members; i++) { | |
4956 | int idx = get_imsm_disk_idx(dev, i, MAP_X); | |
4957 | ||
4958 | disk = get_imsm_disk(super, idx); | |
4959 | serialcpy(inf[i].serial, disk->serial); | |
4960 | } | |
4961 | append_metadata_update(st, u, len); | |
4962 | ||
4963 | return 0; | |
4964 | } | |
4965 | ||
4966 | static int mgmt_disk(struct supertype *st) | |
4967 | { | |
4968 | struct intel_super *super = st->sb; | |
4969 | size_t len; | |
4970 | struct imsm_update_add_remove_disk *u; | |
4971 | ||
4972 | if (!super->disk_mgmt_list) | |
4973 | return 0; | |
4974 | ||
4975 | len = sizeof(*u); | |
4976 | u = malloc(len); | |
4977 | if (!u) { | |
4978 | fprintf(stderr, "%s: failed to allocate update buffer\n", | |
4979 | __func__); | |
4980 | return 1; | |
4981 | } | |
4982 | ||
4983 | u->type = update_add_remove_disk; | |
4984 | append_metadata_update(st, u, len); | |
4985 | ||
4986 | return 0; | |
4987 | } | |
4988 | ||
4989 | static int write_init_super_imsm(struct supertype *st) | |
4990 | { | |
4991 | struct intel_super *super = st->sb; | |
4992 | int current_vol = super->current_vol; | |
4993 | ||
4994 | /* we are done with current_vol reset it to point st at the container */ | |
4995 | super->current_vol = -1; | |
4996 | ||
4997 | if (st->update_tail) { | |
4998 | /* queue the recently created array / added disk | |
4999 | * as a metadata update */ | |
5000 | int rv; | |
5001 | ||
5002 | /* determine if we are creating a volume or adding a disk */ | |
5003 | if (current_vol < 0) { | |
5004 | /* in the mgmt (add/remove) disk case we are running | |
5005 | * in mdmon context, so don't close fd's | |
5006 | */ | |
5007 | return mgmt_disk(st); | |
5008 | } else | |
5009 | rv = create_array(st, current_vol); | |
5010 | ||
5011 | return rv; | |
5012 | } else { | |
5013 | struct dl *d; | |
5014 | for (d = super->disks; d; d = d->next) | |
5015 | Kill(d->devname, NULL, 0, 1, 1); | |
5016 | return write_super_imsm(st, 1); | |
5017 | } | |
5018 | } | |
5019 | #endif | |
5020 | ||
5021 | static int store_super_imsm(struct supertype *st, int fd) | |
5022 | { | |
5023 | struct intel_super *super = st->sb; | |
5024 | struct imsm_super *mpb = super ? super->anchor : NULL; | |
5025 | ||
5026 | if (!mpb) | |
5027 | return 1; | |
5028 | ||
5029 | #ifndef MDASSEMBLE | |
5030 | return store_imsm_mpb(fd, mpb); | |
5031 | #else | |
5032 | return 1; | |
5033 | #endif | |
5034 | } | |
5035 | ||
5036 | static int imsm_bbm_log_size(struct imsm_super *mpb) | |
5037 | { | |
5038 | return __le32_to_cpu(mpb->bbm_log_size); | |
5039 | } | |
5040 | ||
5041 | #ifndef MDASSEMBLE | |
5042 | static int validate_geometry_imsm_container(struct supertype *st, int level, | |
5043 | int layout, int raiddisks, int chunk, | |
5044 | unsigned long long size, char *dev, | |
5045 | unsigned long long *freesize, | |
5046 | int verbose) | |
5047 | { | |
5048 | int fd; | |
5049 | unsigned long long ldsize; | |
5050 | struct intel_super *super=NULL; | |
5051 | int rv = 0; | |
5052 | ||
5053 | if (level != LEVEL_CONTAINER) | |
5054 | return 0; | |
5055 | if (!dev) | |
5056 | return 1; | |
5057 | ||
5058 | fd = open(dev, O_RDONLY|O_EXCL, 0); | |
5059 | if (fd < 0) { | |
5060 | if (verbose) | |
5061 | fprintf(stderr, Name ": imsm: Cannot open %s: %s\n", | |
5062 | dev, strerror(errno)); | |
5063 | return 0; | |
5064 | } | |
5065 | if (!get_dev_size(fd, dev, &ldsize)) { | |
5066 | close(fd); | |
5067 | return 0; | |
5068 | } | |
5069 | ||
5070 | /* capabilities retrieve could be possible | |
5071 | * note that there is no fd for the disks in array. | |
5072 | */ | |
5073 | super = alloc_super(); | |
5074 | if (!super) { | |
5075 | fprintf(stderr, | |
5076 | Name ": malloc of %zu failed.\n", | |
5077 | sizeof(*super)); | |
5078 | close(fd); | |
5079 | return 0; | |
5080 | } | |
5081 | ||
5082 | rv = find_intel_hba_capability(fd, super, verbose ? dev : NULL); | |
5083 | if (rv != 0) { | |
5084 | #if DEBUG | |
5085 | char str[256]; | |
5086 | fd2devname(fd, str); | |
5087 | dprintf("validate_geometry_imsm_container: fd: %d %s orom: %p rv: %d raiddisk: %d\n", | |
5088 | fd, str, super->orom, rv, raiddisks); | |
5089 | #endif | |
5090 | /* no orom/efi or non-intel hba of the disk */ | |
5091 | close(fd); | |
5092 | free_imsm(super); | |
5093 | return 0; | |
5094 | } | |
5095 | close(fd); | |
5096 | if (super->orom && raiddisks > super->orom->tds) { | |
5097 | if (verbose) | |
5098 | fprintf(stderr, Name ": %d exceeds maximum number of" | |
5099 | " platform supported disks: %d\n", | |
5100 | raiddisks, super->orom->tds); | |
5101 | ||
5102 | free_imsm(super); | |
5103 | return 0; | |
5104 | } | |
5105 | ||
5106 | *freesize = avail_size_imsm(st, ldsize >> 9); | |
5107 | free_imsm(super); | |
5108 | ||
5109 | return 1; | |
5110 | } | |
5111 | ||
5112 | static unsigned long long find_size(struct extent *e, int *idx, int num_extents) | |
5113 | { | |
5114 | const unsigned long long base_start = e[*idx].start; | |
5115 | unsigned long long end = base_start + e[*idx].size; | |
5116 | int i; | |
5117 | ||
5118 | if (base_start == end) | |
5119 | return 0; | |
5120 | ||
5121 | *idx = *idx + 1; | |
5122 | for (i = *idx; i < num_extents; i++) { | |
5123 | /* extend overlapping extents */ | |
5124 | if (e[i].start >= base_start && | |
5125 | e[i].start <= end) { | |
5126 | if (e[i].size == 0) | |
5127 | return 0; | |
5128 | if (e[i].start + e[i].size > end) | |
5129 | end = e[i].start + e[i].size; | |
5130 | } else if (e[i].start > end) { | |
5131 | *idx = i; | |
5132 | break; | |
5133 | } | |
5134 | } | |
5135 | ||
5136 | return end - base_start; | |
5137 | } | |
5138 | ||
5139 | static unsigned long long merge_extents(struct intel_super *super, int sum_extents) | |
5140 | { | |
5141 | /* build a composite disk with all known extents and generate a new | |
5142 | * 'maxsize' given the "all disks in an array must share a common start | |
5143 | * offset" constraint | |
5144 | */ | |
5145 | struct extent *e = calloc(sum_extents, sizeof(*e)); | |
5146 | struct dl *dl; | |
5147 | int i, j; | |
5148 | int start_extent; | |
5149 | unsigned long long pos; | |
5150 | unsigned long long start = 0; | |
5151 | unsigned long long maxsize; | |
5152 | unsigned long reserve; | |
5153 | ||
5154 | if (!e) | |
5155 | return 0; | |
5156 | ||
5157 | /* coalesce and sort all extents. also, check to see if we need to | |
5158 | * reserve space between member arrays | |
5159 | */ | |
5160 | j = 0; | |
5161 | for (dl = super->disks; dl; dl = dl->next) { | |
5162 | if (!dl->e) | |
5163 | continue; | |
5164 | for (i = 0; i < dl->extent_cnt; i++) | |
5165 | e[j++] = dl->e[i]; | |
5166 | } | |
5167 | qsort(e, sum_extents, sizeof(*e), cmp_extent); | |
5168 | ||
5169 | /* merge extents */ | |
5170 | i = 0; | |
5171 | j = 0; | |
5172 | while (i < sum_extents) { | |
5173 | e[j].start = e[i].start; | |
5174 | e[j].size = find_size(e, &i, sum_extents); | |
5175 | j++; | |
5176 | if (e[j-1].size == 0) | |
5177 | break; | |
5178 | } | |
5179 | ||
5180 | pos = 0; | |
5181 | maxsize = 0; | |
5182 | start_extent = 0; | |
5183 | i = 0; | |
5184 | do { | |
5185 | unsigned long long esize; | |
5186 | ||
5187 | esize = e[i].start - pos; | |
5188 | if (esize >= maxsize) { | |
5189 | maxsize = esize; | |
5190 | start = pos; | |
5191 | start_extent = i; | |
5192 | } | |
5193 | pos = e[i].start + e[i].size; | |
5194 | i++; | |
5195 | } while (e[i-1].size); | |
5196 | free(e); | |
5197 | ||
5198 | if (maxsize == 0) | |
5199 | return 0; | |
5200 | ||
5201 | /* FIXME assumes volume at offset 0 is the first volume in a | |
5202 | * container | |
5203 | */ | |
5204 | if (start_extent > 0) | |
5205 | reserve = IMSM_RESERVED_SECTORS; /* gap between raid regions */ | |
5206 | else | |
5207 | reserve = 0; | |
5208 | ||
5209 | if (maxsize < reserve) | |
5210 | return 0; | |
5211 | ||
5212 | super->create_offset = ~((__u32) 0); | |
5213 | if (start + reserve > super->create_offset) | |
5214 | return 0; /* start overflows create_offset */ | |
5215 | super->create_offset = start + reserve; | |
5216 | ||
5217 | return maxsize - reserve; | |
5218 | } | |
5219 | ||
5220 | static int is_raid_level_supported(const struct imsm_orom *orom, int level, int raiddisks) | |
5221 | { | |
5222 | if (level < 0 || level == 6 || level == 4) | |
5223 | return 0; | |
5224 | ||
5225 | /* if we have an orom prevent invalid raid levels */ | |
5226 | if (orom) | |
5227 | switch (level) { | |
5228 | case 0: return imsm_orom_has_raid0(orom); | |
5229 | case 1: | |
5230 | if (raiddisks > 2) | |
5231 | return imsm_orom_has_raid1e(orom); | |
5232 | return imsm_orom_has_raid1(orom) && raiddisks == 2; | |
5233 | case 10: return imsm_orom_has_raid10(orom) && raiddisks == 4; | |
5234 | case 5: return imsm_orom_has_raid5(orom) && raiddisks > 2; | |
5235 | } | |
5236 | else | |
5237 | return 1; /* not on an Intel RAID platform so anything goes */ | |
5238 | ||
5239 | return 0; | |
5240 | } | |
5241 | ||
5242 | static int imsm_default_chunk(const struct imsm_orom *orom) | |
5243 | { | |
5244 | /* up to 512 if the plaform supports it, otherwise the platform max. | |
5245 | * 128 if no platform detected | |
5246 | */ | |
5247 | int fs = max(7, orom ? fls(orom->sss) : 0); | |
5248 | ||
5249 | return min(512, (1 << fs)); | |
5250 | } | |
5251 | ||
5252 | #define pr_vrb(fmt, arg...) (void) (verbose && fprintf(stderr, Name fmt, ##arg)) | |
5253 | static int | |
5254 | validate_geometry_imsm_orom(struct intel_super *super, int level, int layout, | |
5255 | int raiddisks, int *chunk, int verbose) | |
5256 | { | |
5257 | /* check/set platform and metadata limits/defaults */ | |
5258 | if (super->orom && raiddisks > super->orom->dpa) { | |
5259 | pr_vrb(": platform supports a maximum of %d disks per array\n", | |
5260 | super->orom->dpa); | |
5261 | return 0; | |
5262 | } | |
5263 | ||
5264 | /* capabilities of OROM tested - copied from validate_geometry_imsm_volume */ | |
5265 | if (!is_raid_level_supported(super->orom, level, raiddisks)) { | |
5266 | pr_vrb(": platform does not support raid%d with %d disk%s\n", | |
5267 | level, raiddisks, raiddisks > 1 ? "s" : ""); | |
5268 | return 0; | |
5269 | } | |
5270 | ||
5271 | if (chunk && (*chunk == 0 || *chunk == UnSet)) | |
5272 | *chunk = imsm_default_chunk(super->orom); | |
5273 | ||
5274 | if (super->orom && chunk && !imsm_orom_has_chunk(super->orom, *chunk)) { | |
5275 | pr_vrb(": platform does not support a chunk size of: " | |
5276 | "%d\n", *chunk); | |
5277 | return 0; | |
5278 | } | |
5279 | ||
5280 | if (layout != imsm_level_to_layout(level)) { | |
5281 | if (level == 5) | |
5282 | pr_vrb(": imsm raid 5 only supports the left-asymmetric layout\n"); | |
5283 | else if (level == 10) | |
5284 | pr_vrb(": imsm raid 10 only supports the n2 layout\n"); | |
5285 | else | |
5286 | pr_vrb(": imsm unknown layout %#x for this raid level %d\n", | |
5287 | layout, level); | |
5288 | return 0; | |
5289 | } | |
5290 | return 1; | |
5291 | } | |
5292 | ||
5293 | /* validate_geometry_imsm_volume - lifted from validate_geometry_ddf_bvd | |
5294 | * FIX ME add ahci details | |
5295 | */ | |
5296 | static int validate_geometry_imsm_volume(struct supertype *st, int level, | |
5297 | int layout, int raiddisks, int *chunk, | |
5298 | unsigned long long size, char *dev, | |
5299 | unsigned long long *freesize, | |
5300 | int verbose) | |
5301 | { | |
5302 | struct stat stb; | |
5303 | struct intel_super *super = st->sb; | |
5304 | struct imsm_super *mpb; | |
5305 | struct dl *dl; | |
5306 | unsigned long long pos = 0; | |
5307 | unsigned long long maxsize; | |
5308 | struct extent *e; | |
5309 | int i; | |
5310 | ||
5311 | /* We must have the container info already read in. */ | |
5312 | if (!super) | |
5313 | return 0; | |
5314 | ||
5315 | mpb = super->anchor; | |
5316 | ||
5317 | if (!validate_geometry_imsm_orom(super, level, layout, raiddisks, chunk, verbose)) { | |
5318 | fprintf(stderr, Name ": RAID gemetry validation failed. " | |
5319 | "Cannot proceed with the action(s).\n"); | |
5320 | return 0; | |
5321 | } | |
5322 | if (!dev) { | |
5323 | /* General test: make sure there is space for | |
5324 | * 'raiddisks' device extents of size 'size' at a given | |
5325 | * offset | |
5326 | */ | |
5327 | unsigned long long minsize = size; | |
5328 | unsigned long long start_offset = MaxSector; | |
5329 | int dcnt = 0; | |
5330 | if (minsize == 0) | |
5331 | minsize = MPB_SECTOR_CNT + IMSM_RESERVED_SECTORS; | |
5332 | for (dl = super->disks; dl ; dl = dl->next) { | |
5333 | int found = 0; | |
5334 | ||
5335 | pos = 0; | |
5336 | i = 0; | |
5337 | e = get_extents(super, dl); | |
5338 | if (!e) continue; | |
5339 | do { | |
5340 | unsigned long long esize; | |
5341 | esize = e[i].start - pos; | |
5342 | if (esize >= minsize) | |
5343 | found = 1; | |
5344 | if (found && start_offset == MaxSector) { | |
5345 | start_offset = pos; | |
5346 | break; | |
5347 | } else if (found && pos != start_offset) { | |
5348 | found = 0; | |
5349 | break; | |
5350 | } | |
5351 | pos = e[i].start + e[i].size; | |
5352 | i++; | |
5353 | } while (e[i-1].size); | |
5354 | if (found) | |
5355 | dcnt++; | |
5356 | free(e); | |
5357 | } | |
5358 | if (dcnt < raiddisks) { | |
5359 | if (verbose) | |
5360 | fprintf(stderr, Name ": imsm: Not enough " | |
5361 | "devices with space for this array " | |
5362 | "(%d < %d)\n", | |
5363 | dcnt, raiddisks); | |
5364 | return 0; | |
5365 | } | |
5366 | return 1; | |
5367 | } | |
5368 | ||
5369 | /* This device must be a member of the set */ | |
5370 | if (stat(dev, &stb) < 0) | |
5371 | return 0; | |
5372 | if ((S_IFMT & stb.st_mode) != S_IFBLK) | |
5373 | return 0; | |
5374 | for (dl = super->disks ; dl ; dl = dl->next) { | |
5375 | if (dl->major == (int)major(stb.st_rdev) && | |
5376 | dl->minor == (int)minor(stb.st_rdev)) | |
5377 | break; | |
5378 | } | |
5379 | if (!dl) { | |
5380 | if (verbose) | |
5381 | fprintf(stderr, Name ": %s is not in the " | |
5382 | "same imsm set\n", dev); | |
5383 | return 0; | |
5384 | } else if (super->orom && dl->index < 0 && mpb->num_raid_devs) { | |
5385 | /* If a volume is present then the current creation attempt | |
5386 | * cannot incorporate new spares because the orom may not | |
5387 | * understand this configuration (all member disks must be | |
5388 | * members of each array in the container). | |
5389 | */ | |
5390 | fprintf(stderr, Name ": %s is a spare and a volume" | |
5391 | " is already defined for this container\n", dev); | |
5392 | fprintf(stderr, Name ": The option-rom requires all member" | |
5393 | " disks to be a member of all volumes\n"); | |
5394 | return 0; | |
5395 | } else if (super->orom && mpb->num_raid_devs > 0 && | |
5396 | mpb->num_disks != raiddisks) { | |
5397 | fprintf(stderr, Name ": The option-rom requires all member" | |
5398 | " disks to be a member of all volumes\n"); | |
5399 | return 0; | |
5400 | } | |
5401 | ||
5402 | /* retrieve the largest free space block */ | |
5403 | e = get_extents(super, dl); | |
5404 | maxsize = 0; | |
5405 | i = 0; | |
5406 | if (e) { | |
5407 | do { | |
5408 | unsigned long long esize; | |
5409 | ||
5410 | esize = e[i].start - pos; | |
5411 | if (esize >= maxsize) | |
5412 | maxsize = esize; | |
5413 | pos = e[i].start + e[i].size; | |
5414 | i++; | |
5415 | } while (e[i-1].size); | |
5416 | dl->e = e; | |
5417 | dl->extent_cnt = i; | |
5418 | } else { | |
5419 | if (verbose) | |
5420 | fprintf(stderr, Name ": unable to determine free space for: %s\n", | |
5421 | dev); | |
5422 | return 0; | |
5423 | } | |
5424 | if (maxsize < size) { | |
5425 | if (verbose) | |
5426 | fprintf(stderr, Name ": %s not enough space (%llu < %llu)\n", | |
5427 | dev, maxsize, size); | |
5428 | return 0; | |
5429 | } | |
5430 | ||
5431 | /* count total number of extents for merge */ | |
5432 | i = 0; | |
5433 | for (dl = super->disks; dl; dl = dl->next) | |
5434 | if (dl->e) | |
5435 | i += dl->extent_cnt; | |
5436 | ||
5437 | maxsize = merge_extents(super, i); | |
5438 | ||
5439 | if (!check_env("IMSM_NO_PLATFORM") && | |
5440 | mpb->num_raid_devs > 0 && size && size != maxsize) { | |
5441 | fprintf(stderr, Name ": attempting to create a second " | |
5442 | "volume with size less then remaining space. " | |
5443 | "Aborting...\n"); | |
5444 | return 0; | |
5445 | } | |
5446 | ||
5447 | if (maxsize < size || maxsize == 0) { | |
5448 | if (verbose) { | |
5449 | if (maxsize == 0) | |
5450 | fprintf(stderr, Name ": no free space" | |
5451 | " left on device. Aborting...\n"); | |
5452 | else | |
5453 | fprintf(stderr, Name ": not enough space" | |
5454 | " to create volume of given size" | |
5455 | " (%llu < %llu). Aborting...\n", | |
5456 | maxsize, size); | |
5457 | } | |
5458 | return 0; | |
5459 | } | |
5460 | ||
5461 | *freesize = maxsize; | |
5462 | ||
5463 | return 1; | |
5464 | } | |
5465 | ||
5466 | static int reserve_space(struct supertype *st, int raiddisks, | |
5467 | unsigned long long size, int chunk, | |
5468 | unsigned long long *freesize) | |
5469 | { | |
5470 | struct intel_super *super = st->sb; | |
5471 | struct imsm_super *mpb = super->anchor; | |
5472 | struct dl *dl; | |
5473 | int i; | |
5474 | int extent_cnt; | |
5475 | struct extent *e; | |
5476 | unsigned long long maxsize; | |
5477 | unsigned long long minsize; | |
5478 | int cnt; | |
5479 | int used; | |
5480 | ||
5481 | /* find the largest common start free region of the possible disks */ | |
5482 | used = 0; | |
5483 | extent_cnt = 0; | |
5484 | cnt = 0; | |
5485 | for (dl = super->disks; dl; dl = dl->next) { | |
5486 | dl->raiddisk = -1; | |
5487 | ||
5488 | if (dl->index >= 0) | |
5489 | used++; | |
5490 | ||
5491 | /* don't activate new spares if we are orom constrained | |
5492 | * and there is already a volume active in the container | |
5493 | */ | |
5494 | if (super->orom && dl->index < 0 && mpb->num_raid_devs) | |
5495 | continue; | |
5496 | ||
5497 | e = get_extents(super, dl); | |
5498 | if (!e) | |
5499 | continue; | |
5500 | for (i = 1; e[i-1].size; i++) | |
5501 | ; | |
5502 | dl->e = e; | |
5503 | dl->extent_cnt = i; | |
5504 | extent_cnt += i; | |
5505 | cnt++; | |
5506 | } | |
5507 | ||
5508 | maxsize = merge_extents(super, extent_cnt); | |
5509 | minsize = size; | |
5510 | if (size == 0) | |
5511 | /* chunk is in K */ | |
5512 | minsize = chunk * 2; | |
5513 | ||
5514 | if (cnt < raiddisks || | |
5515 | (super->orom && used && used != raiddisks) || | |
5516 | maxsize < minsize || | |
5517 | maxsize == 0) { | |
5518 | fprintf(stderr, Name ": not enough devices with space to create array.\n"); | |
5519 | return 0; /* No enough free spaces large enough */ | |
5520 | } | |
5521 | ||
5522 | if (size == 0) { | |
5523 | size = maxsize; | |
5524 | if (chunk) { | |
5525 | size /= 2 * chunk; | |
5526 | size *= 2 * chunk; | |
5527 | } | |
5528 | } | |
5529 | ||
5530 | cnt = 0; | |
5531 | for (dl = super->disks; dl; dl = dl->next) | |
5532 | if (dl->e) | |
5533 | dl->raiddisk = cnt++; | |
5534 | ||
5535 | *freesize = size; | |
5536 | ||
5537 | return 1; | |
5538 | } | |
5539 | ||
5540 | static int validate_geometry_imsm(struct supertype *st, int level, int layout, | |
5541 | int raiddisks, int *chunk, unsigned long long size, | |
5542 | char *dev, unsigned long long *freesize, | |
5543 | int verbose) | |
5544 | { | |
5545 | int fd, cfd; | |
5546 | struct mdinfo *sra; | |
5547 | int is_member = 0; | |
5548 | ||
5549 | /* load capability | |
5550 | * if given unused devices create a container | |
5551 | * if given given devices in a container create a member volume | |
5552 | */ | |
5553 | if (level == LEVEL_CONTAINER) { | |
5554 | /* Must be a fresh device to add to a container */ | |
5555 | return validate_geometry_imsm_container(st, level, layout, | |
5556 | raiddisks, | |
5557 | chunk?*chunk:0, size, | |
5558 | dev, freesize, | |
5559 | verbose); | |
5560 | } | |
5561 | ||
5562 | if (!dev) { | |
5563 | if (st->sb) { | |
5564 | if (!validate_geometry_imsm_orom(st->sb, level, layout, | |
5565 | raiddisks, chunk, | |
5566 | verbose)) | |
5567 | return 0; | |
5568 | /* we are being asked to automatically layout a | |
5569 | * new volume based on the current contents of | |
5570 | * the container. If the the parameters can be | |
5571 | * satisfied reserve_space will record the disks, | |
5572 | * start offset, and size of the volume to be | |
5573 | * created. add_to_super and getinfo_super | |
5574 | * detect when autolayout is in progress. | |
5575 | */ | |
5576 | if (freesize) | |
5577 | return reserve_space(st, raiddisks, size, | |
5578 | chunk?*chunk:0, freesize); | |
5579 | } | |
5580 | return 1; | |
5581 | } | |
5582 | if (st->sb) { | |
5583 | /* creating in a given container */ | |
5584 | return validate_geometry_imsm_volume(st, level, layout, | |
5585 | raiddisks, chunk, size, | |
5586 | dev, freesize, verbose); | |
5587 | } | |
5588 | ||
5589 | /* This device needs to be a device in an 'imsm' container */ | |
5590 | fd = open(dev, O_RDONLY|O_EXCL, 0); | |
5591 | if (fd >= 0) { | |
5592 | if (verbose) | |
5593 | fprintf(stderr, | |
5594 | Name ": Cannot create this array on device %s\n", | |
5595 | dev); | |
5596 | close(fd); | |
5597 | return 0; | |
5598 | } | |
5599 | if (errno != EBUSY || (fd = open(dev, O_RDONLY, 0)) < 0) { | |
5600 | if (verbose) | |
5601 | fprintf(stderr, Name ": Cannot open %s: %s\n", | |
5602 | dev, strerror(errno)); | |
5603 | return 0; | |
5604 | } | |
5605 | /* Well, it is in use by someone, maybe an 'imsm' container. */ | |
5606 | cfd = open_container(fd); | |
5607 | close(fd); | |
5608 | if (cfd < 0) { | |
5609 | if (verbose) | |
5610 | fprintf(stderr, Name ": Cannot use %s: It is busy\n", | |
5611 | dev); | |
5612 | return 0; | |
5613 | } | |
5614 | sra = sysfs_read(cfd, 0, GET_VERSION); | |
5615 | if (sra && sra->array.major_version == -1 && | |
5616 | strcmp(sra->text_version, "imsm") == 0) | |
5617 | is_member = 1; | |
5618 | sysfs_free(sra); | |
5619 | if (is_member) { | |
5620 | /* This is a member of a imsm container. Load the container | |
5621 | * and try to create a volume | |
5622 | */ | |
5623 | struct intel_super *super; | |
5624 | ||
5625 | if (load_super_imsm_all(st, cfd, (void **) &super, NULL) == 0) { | |
5626 | st->sb = super; | |
5627 | st->container_dev = fd2devnum(cfd); | |
5628 | close(cfd); | |
5629 | return validate_geometry_imsm_volume(st, level, layout, | |
5630 | raiddisks, chunk, | |
5631 | size, dev, | |
5632 | freesize, 1) | |
5633 | ? 1 : -1; | |
5634 | } | |
5635 | } | |
5636 | ||
5637 | if (verbose) | |
5638 | fprintf(stderr, Name ": failed container membership check\n"); | |
5639 | ||
5640 | close(cfd); | |
5641 | return 0; | |
5642 | } | |
5643 | ||
5644 | static void default_geometry_imsm(struct supertype *st, int *level, int *layout, int *chunk) | |
5645 | { | |
5646 | struct intel_super *super = st->sb; | |
5647 | ||
5648 | if (level && *level == UnSet) | |
5649 | *level = LEVEL_CONTAINER; | |
5650 | ||
5651 | if (level && layout && *layout == UnSet) | |
5652 | *layout = imsm_level_to_layout(*level); | |
5653 | ||
5654 | if (chunk && (*chunk == UnSet || *chunk == 0)) | |
5655 | *chunk = imsm_default_chunk(super->orom); | |
5656 | } | |
5657 | ||
5658 | static void handle_missing(struct intel_super *super, struct imsm_dev *dev); | |
5659 | ||
5660 | static int kill_subarray_imsm(struct supertype *st) | |
5661 | { | |
5662 | /* remove the subarray currently referenced by ->current_vol */ | |
5663 | __u8 i; | |
5664 | struct intel_dev **dp; | |
5665 | struct intel_super *super = st->sb; | |
5666 | __u8 current_vol = super->current_vol; | |
5667 | struct imsm_super *mpb = super->anchor; | |
5668 | ||
5669 | if (super->current_vol < 0) | |
5670 | return 2; | |
5671 | super->current_vol = -1; /* invalidate subarray cursor */ | |
5672 | ||
5673 | /* block deletions that would change the uuid of active subarrays | |
5674 | * | |
5675 | * FIXME when immutable ids are available, but note that we'll | |
5676 | * also need to fixup the invalidated/active subarray indexes in | |
5677 | * mdstat | |
5678 | */ | |
5679 | for (i = 0; i < mpb->num_raid_devs; i++) { | |
5680 | char subarray[4]; | |
5681 | ||
5682 | if (i < current_vol) | |
5683 | continue; | |
5684 | sprintf(subarray, "%u", i); | |
5685 | if (is_subarray_active(subarray, st->devname)) { | |
5686 | fprintf(stderr, | |
5687 | Name ": deleting subarray-%d would change the UUID of active subarray-%d, aborting\n", | |
5688 | current_vol, i); | |
5689 | ||
5690 | return 2; | |
5691 | } | |
5692 | } | |
5693 | ||
5694 | if (st->update_tail) { | |
5695 | struct imsm_update_kill_array *u = malloc(sizeof(*u)); | |
5696 | ||
5697 | if (!u) | |
5698 | return 2; | |
5699 | u->type = update_kill_array; | |
5700 | u->dev_idx = current_vol; | |
5701 | append_metadata_update(st, u, sizeof(*u)); | |
5702 | ||
5703 | return 0; | |
5704 | } | |
5705 | ||
5706 | for (dp = &super->devlist; *dp;) | |
5707 | if ((*dp)->index == current_vol) { | |
5708 | *dp = (*dp)->next; | |
5709 | } else { | |
5710 | handle_missing(super, (*dp)->dev); | |
5711 | if ((*dp)->index > current_vol) | |
5712 | (*dp)->index--; | |
5713 | dp = &(*dp)->next; | |
5714 | } | |
5715 | ||
5716 | /* no more raid devices, all active components are now spares, | |
5717 | * but of course failed are still failed | |
5718 | */ | |
5719 | if (--mpb->num_raid_devs == 0) { | |
5720 | struct dl *d; | |
5721 | ||
5722 | for (d = super->disks; d; d = d->next) | |
5723 | if (d->index > -2) | |
5724 | mark_spare(d); | |
5725 | } | |
5726 | ||
5727 | super->updates_pending++; | |
5728 | ||
5729 | return 0; | |
5730 | } | |
5731 | ||
5732 | static int update_subarray_imsm(struct supertype *st, char *subarray, | |
5733 | char *update, struct mddev_ident *ident) | |
5734 | { | |
5735 | /* update the subarray currently referenced by ->current_vol */ | |
5736 | struct intel_super *super = st->sb; | |
5737 | struct imsm_super *mpb = super->anchor; | |
5738 | ||
5739 | if (strcmp(update, "name") == 0) { | |
5740 | char *name = ident->name; | |
5741 | char *ep; | |
5742 | int vol; | |
5743 | ||
5744 | if (is_subarray_active(subarray, st->devname)) { | |
5745 | fprintf(stderr, | |
5746 | Name ": Unable to update name of active subarray\n"); | |
5747 | return 2; | |
5748 | } | |
5749 | ||
5750 | if (!check_name(super, name, 0)) | |
5751 | return 2; | |
5752 | ||
5753 | vol = strtoul(subarray, &ep, 10); | |
5754 | if (*ep != '\0' || vol >= super->anchor->num_raid_devs) | |
5755 | return 2; | |
5756 | ||
5757 | if (st->update_tail) { | |
5758 | struct imsm_update_rename_array *u = malloc(sizeof(*u)); | |
5759 | ||
5760 | if (!u) | |
5761 | return 2; | |
5762 | u->type = update_rename_array; | |
5763 | u->dev_idx = vol; | |
5764 | snprintf((char *) u->name, MAX_RAID_SERIAL_LEN, "%s", name); | |
5765 | append_metadata_update(st, u, sizeof(*u)); | |
5766 | } else { | |
5767 | struct imsm_dev *dev; | |
5768 | int i; | |
5769 | ||
5770 | dev = get_imsm_dev(super, vol); | |
5771 | snprintf((char *) dev->volume, MAX_RAID_SERIAL_LEN, "%s", name); | |
5772 | for (i = 0; i < mpb->num_raid_devs; i++) { | |
5773 | dev = get_imsm_dev(super, i); | |
5774 | handle_missing(super, dev); | |
5775 | } | |
5776 | super->updates_pending++; | |
5777 | } | |
5778 | } else | |
5779 | return 2; | |
5780 | ||
5781 | return 0; | |
5782 | } | |
5783 | #endif /* MDASSEMBLE */ | |
5784 | ||
5785 | static int is_gen_migration(struct imsm_dev *dev) | |
5786 | { | |
5787 | if (dev == NULL) | |
5788 | return 0; | |
5789 | ||
5790 | if (!dev->vol.migr_state) | |
5791 | return 0; | |
5792 | ||
5793 | if (migr_type(dev) == MIGR_GEN_MIGR) | |
5794 | return 1; | |
5795 | ||
5796 | return 0; | |
5797 | } | |
5798 | ||
5799 | static int is_rebuilding(struct imsm_dev *dev) | |
5800 | { | |
5801 | struct imsm_map *migr_map; | |
5802 | ||
5803 | if (!dev->vol.migr_state) | |
5804 | return 0; | |
5805 | ||
5806 | if (migr_type(dev) != MIGR_REBUILD) | |
5807 | return 0; | |
5808 | ||
5809 | migr_map = get_imsm_map(dev, MAP_1); | |
5810 | ||
5811 | if (migr_map->map_state == IMSM_T_STATE_DEGRADED) | |
5812 | return 1; | |
5813 | else | |
5814 | return 0; | |
5815 | } | |
5816 | ||
5817 | #ifndef MDASSEMBLE | |
5818 | static int is_initializing(struct imsm_dev *dev) | |
5819 | { | |
5820 | struct imsm_map *migr_map; | |
5821 | ||
5822 | if (!dev->vol.migr_state) | |
5823 | return 0; | |
5824 | ||
5825 | if (migr_type(dev) != MIGR_INIT) | |
5826 | return 0; | |
5827 | ||
5828 | migr_map = get_imsm_map(dev, MAP_1); | |
5829 | ||
5830 | if (migr_map->map_state == IMSM_T_STATE_UNINITIALIZED) | |
5831 | return 1; | |
5832 | ||
5833 | return 0; | |
5834 | } | |
5835 | #endif | |
5836 | ||
5837 | static void update_recovery_start(struct intel_super *super, | |
5838 | struct imsm_dev *dev, | |
5839 | struct mdinfo *array) | |
5840 | { | |
5841 | struct mdinfo *rebuild = NULL; | |
5842 | struct mdinfo *d; | |
5843 | __u32 units; | |
5844 | ||
5845 | if (!is_rebuilding(dev)) | |
5846 | return; | |
5847 | ||
5848 | /* Find the rebuild target, but punt on the dual rebuild case */ | |
5849 | for (d = array->devs; d; d = d->next) | |
5850 | if (d->recovery_start == 0) { | |
5851 | if (rebuild) | |
5852 | return; | |
5853 | rebuild = d; | |
5854 | } | |
5855 | ||
5856 | if (!rebuild) { | |
5857 | /* (?) none of the disks are marked with | |
5858 | * IMSM_ORD_REBUILD, so assume they are missing and the | |
5859 | * disk_ord_tbl was not correctly updated | |
5860 | */ | |
5861 | dprintf("%s: failed to locate out-of-sync disk\n", __func__); | |
5862 | return; | |
5863 | } | |
5864 | ||
5865 | units = __le32_to_cpu(dev->vol.curr_migr_unit); | |
5866 | rebuild->recovery_start = units * blocks_per_migr_unit(super, dev); | |
5867 | } | |
5868 | ||
5869 | #ifndef MDASSEMBLE | |
5870 | static int recover_backup_imsm(struct supertype *st, struct mdinfo *info); | |
5871 | #endif | |
5872 | ||
5873 | static struct mdinfo *container_content_imsm(struct supertype *st, char *subarray) | |
5874 | { | |
5875 | /* Given a container loaded by load_super_imsm_all, | |
5876 | * extract information about all the arrays into | |
5877 | * an mdinfo tree. | |
5878 | * If 'subarray' is given, just extract info about that array. | |
5879 | * | |
5880 | * For each imsm_dev create an mdinfo, fill it in, | |
5881 | * then look for matching devices in super->disks | |
5882 | * and create appropriate device mdinfo. | |
5883 | */ | |
5884 | struct intel_super *super = st->sb; | |
5885 | struct imsm_super *mpb = super->anchor; | |
5886 | struct mdinfo *rest = NULL; | |
5887 | unsigned int i; | |
5888 | int sb_errors = 0; | |
5889 | struct dl *d; | |
5890 | int spare_disks = 0; | |
5891 | ||
5892 | /* do not assemble arrays when not all attributes are supported */ | |
5893 | if (imsm_check_attributes(mpb->attributes) == 0) { | |
5894 | sb_errors = 1; | |
5895 | fprintf(stderr, Name ": Unsupported attributes in IMSM metadata." | |
5896 | "Arrays activation is blocked.\n"); | |
5897 | } | |
5898 | ||
5899 | /* check for bad blocks */ | |
5900 | if (imsm_bbm_log_size(super->anchor)) { | |
5901 | fprintf(stderr, Name ": BBM log found in IMSM metadata." | |
5902 | "Arrays activation is blocked.\n"); | |
5903 | sb_errors = 1; | |
5904 | } | |
5905 | ||
5906 | ||
5907 | /* count spare devices, not used in maps | |
5908 | */ | |
5909 | for (d = super->disks; d; d = d->next) | |
5910 | if (d->index == -1) | |
5911 | spare_disks++; | |
5912 | ||
5913 | for (i = 0; i < mpb->num_raid_devs; i++) { | |
5914 | struct imsm_dev *dev; | |
5915 | struct imsm_map *map; | |
5916 | struct imsm_map *map2; | |
5917 | struct mdinfo *this; | |
5918 | int slot; | |
5919 | #ifndef MDASSEMBLE | |
5920 | int chunk; | |
5921 | #endif | |
5922 | char *ep; | |
5923 | ||
5924 | if (subarray && | |
5925 | (i != strtoul(subarray, &ep, 10) || *ep != '\0')) | |
5926 | continue; | |
5927 | ||
5928 | dev = get_imsm_dev(super, i); | |
5929 | map = get_imsm_map(dev, MAP_0); | |
5930 | map2 = get_imsm_map(dev, MAP_1); | |
5931 | ||
5932 | /* do not publish arrays that are in the middle of an | |
5933 | * unsupported migration | |
5934 | */ | |
5935 | if (dev->vol.migr_state && | |
5936 | (migr_type(dev) == MIGR_STATE_CHANGE)) { | |
5937 | fprintf(stderr, Name ": cannot assemble volume '%.16s':" | |
5938 | " unsupported migration in progress\n", | |
5939 | dev->volume); | |
5940 | continue; | |
5941 | } | |
5942 | /* do not publish arrays that are not support by controller's | |
5943 | * OROM/EFI | |
5944 | */ | |
5945 | ||
5946 | this = malloc(sizeof(*this)); | |
5947 | if (!this) { | |
5948 | fprintf(stderr, Name ": failed to allocate %zu bytes\n", | |
5949 | sizeof(*this)); | |
5950 | break; | |
5951 | } | |
5952 | ||
5953 | super->current_vol = i; | |
5954 | getinfo_super_imsm_volume(st, this, NULL); | |
5955 | this->next = rest; | |
5956 | #ifndef MDASSEMBLE | |
5957 | chunk = __le16_to_cpu(map->blocks_per_strip) >> 1; | |
5958 | /* mdadm does not support all metadata features- set the bit in all arrays state */ | |
5959 | if (!validate_geometry_imsm_orom(super, | |
5960 | get_imsm_raid_level(map), /* RAID level */ | |
5961 | imsm_level_to_layout(get_imsm_raid_level(map)), | |
5962 | map->num_members, /* raid disks */ | |
5963 | &chunk, | |
5964 | 1 /* verbose */)) { | |
5965 | fprintf(stderr, Name ": IMSM RAID geometry validation" | |
5966 | " failed. Array %s activation is blocked.\n", | |
5967 | dev->volume); | |
5968 | this->array.state |= | |
5969 | (1<<MD_SB_BLOCK_CONTAINER_RESHAPE) | | |
5970 | (1<<MD_SB_BLOCK_VOLUME); | |
5971 | } | |
5972 | #endif | |
5973 | ||
5974 | /* if array has bad blocks, set suitable bit in all arrays state */ | |
5975 | if (sb_errors) | |
5976 | this->array.state |= | |
5977 | (1<<MD_SB_BLOCK_CONTAINER_RESHAPE) | | |
5978 | (1<<MD_SB_BLOCK_VOLUME); | |
5979 | ||
5980 | for (slot = 0 ; slot < map->num_members; slot++) { | |
5981 | unsigned long long recovery_start; | |
5982 | struct mdinfo *info_d; | |
5983 | struct dl *d; | |
5984 | int idx; | |
5985 | int skip; | |
5986 | __u32 ord; | |
5987 | ||
5988 | skip = 0; | |
5989 | idx = get_imsm_disk_idx(dev, slot, MAP_0); | |
5990 | ord = get_imsm_ord_tbl_ent(dev, slot, MAP_X); | |
5991 | for (d = super->disks; d ; d = d->next) | |
5992 | if (d->index == idx) | |
5993 | break; | |
5994 | ||
5995 | recovery_start = MaxSector; | |
5996 | if (d == NULL) | |
5997 | skip = 1; | |
5998 | if (d && is_failed(&d->disk)) | |
5999 | skip = 1; | |
6000 | if (ord & IMSM_ORD_REBUILD) | |
6001 | recovery_start = 0; | |
6002 | ||
6003 | /* | |
6004 | * if we skip some disks the array will be assmebled degraded; | |
6005 | * reset resync start to avoid a dirty-degraded | |
6006 | * situation when performing the intial sync | |
6007 | * | |
6008 | * FIXME handle dirty degraded | |
6009 | */ | |
6010 | if ((skip || recovery_start == 0) && !dev->vol.dirty) | |
6011 | this->resync_start = MaxSector; | |
6012 | if (skip) | |
6013 | continue; | |
6014 | ||
6015 | info_d = calloc(1, sizeof(*info_d)); | |
6016 | if (!info_d) { | |
6017 | fprintf(stderr, Name ": failed to allocate disk" | |
6018 | " for volume %.16s\n", dev->volume); | |
6019 | info_d = this->devs; | |
6020 | while (info_d) { | |
6021 | struct mdinfo *d = info_d->next; | |
6022 | ||
6023 | free(info_d); | |
6024 | info_d = d; | |
6025 | } | |
6026 | free(this); | |
6027 | this = rest; | |
6028 | break; | |
6029 | } | |
6030 | info_d->next = this->devs; | |
6031 | this->devs = info_d; | |
6032 | ||
6033 | info_d->disk.number = d->index; | |
6034 | info_d->disk.major = d->major; | |
6035 | info_d->disk.minor = d->minor; | |
6036 | info_d->disk.raid_disk = slot; | |
6037 | info_d->recovery_start = recovery_start; | |
6038 | if (map2) { | |
6039 | if (slot < map2->num_members) | |
6040 | info_d->disk.state = (1 << MD_DISK_ACTIVE); | |
6041 | else | |
6042 | this->array.spare_disks++; | |
6043 | } else { | |
6044 | if (slot < map->num_members) | |
6045 | info_d->disk.state = (1 << MD_DISK_ACTIVE); | |
6046 | else | |
6047 | this->array.spare_disks++; | |
6048 | } | |
6049 | if (info_d->recovery_start == MaxSector) | |
6050 | this->array.working_disks++; | |
6051 | ||
6052 | info_d->events = __le32_to_cpu(mpb->generation_num); | |
6053 | info_d->data_offset = __le32_to_cpu(map->pba_of_lba0); | |
6054 | info_d->component_size = __le32_to_cpu(map->blocks_per_member); | |
6055 | } | |
6056 | /* now that the disk list is up-to-date fixup recovery_start */ | |
6057 | update_recovery_start(super, dev, this); | |
6058 | this->array.spare_disks += spare_disks; | |
6059 | ||
6060 | #ifndef MDASSEMBLE | |
6061 | /* check for reshape */ | |
6062 | if (this->reshape_active == 1) | |
6063 | recover_backup_imsm(st, this); | |
6064 | #endif | |
6065 | rest = this; | |
6066 | } | |
6067 | ||
6068 | return rest; | |
6069 | } | |
6070 | ||
6071 | ||
6072 | static __u8 imsm_check_degraded(struct intel_super *super, struct imsm_dev *dev, | |
6073 | int failed, int look_in_map) | |
6074 | { | |
6075 | struct imsm_map *map; | |
6076 | ||
6077 | map = get_imsm_map(dev, look_in_map); | |
6078 | ||
6079 | if (!failed) | |
6080 | return map->map_state == IMSM_T_STATE_UNINITIALIZED ? | |
6081 | IMSM_T_STATE_UNINITIALIZED : IMSM_T_STATE_NORMAL; | |
6082 | ||
6083 | switch (get_imsm_raid_level(map)) { | |
6084 | case 0: | |
6085 | return IMSM_T_STATE_FAILED; | |
6086 | break; | |
6087 | case 1: | |
6088 | if (failed < map->num_members) | |
6089 | return IMSM_T_STATE_DEGRADED; | |
6090 | else | |
6091 | return IMSM_T_STATE_FAILED; | |
6092 | break; | |
6093 | case 10: | |
6094 | { | |
6095 | /** | |
6096 | * check to see if any mirrors have failed, otherwise we | |
6097 | * are degraded. Even numbered slots are mirrored on | |
6098 | * slot+1 | |
6099 | */ | |
6100 | int i; | |
6101 | /* gcc -Os complains that this is unused */ | |
6102 | int insync = insync; | |
6103 | ||
6104 | for (i = 0; i < map->num_members; i++) { | |
6105 | __u32 ord = get_imsm_ord_tbl_ent(dev, i, MAP_X); | |
6106 | int idx = ord_to_idx(ord); | |
6107 | struct imsm_disk *disk; | |
6108 | ||
6109 | /* reset the potential in-sync count on even-numbered | |
6110 | * slots. num_copies is always 2 for imsm raid10 | |
6111 | */ | |
6112 | if ((i & 1) == 0) | |
6113 | insync = 2; | |
6114 | ||
6115 | disk = get_imsm_disk(super, idx); | |
6116 | if (!disk || is_failed(disk) || ord & IMSM_ORD_REBUILD) | |
6117 | insync--; | |
6118 | ||
6119 | /* no in-sync disks left in this mirror the | |
6120 | * array has failed | |
6121 | */ | |
6122 | if (insync == 0) | |
6123 | return IMSM_T_STATE_FAILED; | |
6124 | } | |
6125 | ||
6126 | return IMSM_T_STATE_DEGRADED; | |
6127 | } | |
6128 | case 5: | |
6129 | if (failed < 2) | |
6130 | return IMSM_T_STATE_DEGRADED; | |
6131 | else | |
6132 | return IMSM_T_STATE_FAILED; | |
6133 | break; | |
6134 | default: | |
6135 | break; | |
6136 | } | |
6137 | ||
6138 | return map->map_state; | |
6139 | } | |
6140 | ||
6141 | static int imsm_count_failed(struct intel_super *super, struct imsm_dev *dev, | |
6142 | int look_in_map) | |
6143 | { | |
6144 | int i; | |
6145 | int failed = 0; | |
6146 | struct imsm_disk *disk; | |
6147 | struct imsm_map *map = get_imsm_map(dev, MAP_0); | |
6148 | struct imsm_map *prev = get_imsm_map(dev, MAP_1); | |
6149 | struct imsm_map *map_for_loop; | |
6150 | __u32 ord; | |
6151 | int idx; | |
6152 | int idx_1; | |
6153 | ||
6154 | /* at the beginning of migration we set IMSM_ORD_REBUILD on | |
6155 | * disks that are being rebuilt. New failures are recorded to | |
6156 | * map[0]. So we look through all the disks we started with and | |
6157 | * see if any failures are still present, or if any new ones | |
6158 | * have arrived | |
6159 | */ | |
6160 | map_for_loop = map; | |
6161 | if (prev && (map->num_members < prev->num_members)) | |
6162 | map_for_loop = prev; | |
6163 | ||
6164 | for (i = 0; i < map_for_loop->num_members; i++) { | |
6165 | idx_1 = -255; | |
6166 | /* when MAP_X is passed both maps failures are counted | |
6167 | */ | |
6168 | if (prev && | |
6169 | ((look_in_map == MAP_1) || (look_in_map == MAP_X)) && | |
6170 | (i < prev->num_members)) { | |
6171 | ord = __le32_to_cpu(prev->disk_ord_tbl[i]); | |
6172 | idx_1 = ord_to_idx(ord); | |
6173 | ||
6174 | disk = get_imsm_disk(super, idx_1); | |
6175 | if (!disk || is_failed(disk) || ord & IMSM_ORD_REBUILD) | |
6176 | failed++; | |
6177 | } | |
6178 | if (((look_in_map == MAP_0) || (look_in_map == MAP_X)) && | |
6179 | (i < map->num_members)) { | |
6180 | ord = __le32_to_cpu(map->disk_ord_tbl[i]); | |
6181 | idx = ord_to_idx(ord); | |
6182 | ||
6183 | if (idx != idx_1) { | |
6184 | disk = get_imsm_disk(super, idx); | |
6185 | if (!disk || is_failed(disk) || | |
6186 | ord & IMSM_ORD_REBUILD) | |
6187 | failed++; | |
6188 | } | |
6189 | } | |
6190 | } | |
6191 | ||
6192 | return failed; | |
6193 | } | |
6194 | ||
6195 | #ifndef MDASSEMBLE | |
6196 | static int imsm_open_new(struct supertype *c, struct active_array *a, | |
6197 | char *inst) | |
6198 | { | |
6199 | struct intel_super *super = c->sb; | |
6200 | struct imsm_super *mpb = super->anchor; | |
6201 | ||
6202 | if (atoi(inst) >= mpb->num_raid_devs) { | |
6203 | fprintf(stderr, "%s: subarry index %d, out of range\n", | |
6204 | __func__, atoi(inst)); | |
6205 | return -ENODEV; | |
6206 | } | |
6207 | ||
6208 | dprintf("imsm: open_new %s\n", inst); | |
6209 | a->info.container_member = atoi(inst); | |
6210 | return 0; | |
6211 | } | |
6212 | ||
6213 | static int is_resyncing(struct imsm_dev *dev) | |
6214 | { | |
6215 | struct imsm_map *migr_map; | |
6216 | ||
6217 | if (!dev->vol.migr_state) | |
6218 | return 0; | |
6219 | ||
6220 | if (migr_type(dev) == MIGR_INIT || | |
6221 | migr_type(dev) == MIGR_REPAIR) | |
6222 | return 1; | |
6223 | ||
6224 | if (migr_type(dev) == MIGR_GEN_MIGR) | |
6225 | return 0; | |
6226 | ||
6227 | migr_map = get_imsm_map(dev, MAP_1); | |
6228 | ||
6229 | if ((migr_map->map_state == IMSM_T_STATE_NORMAL) && | |
6230 | (dev->vol.migr_type != MIGR_GEN_MIGR)) | |
6231 | return 1; | |
6232 | else | |
6233 | return 0; | |
6234 | } | |
6235 | ||
6236 | /* return true if we recorded new information */ | |
6237 | static int mark_failure(struct imsm_dev *dev, struct imsm_disk *disk, int idx) | |
6238 | { | |
6239 | __u32 ord; | |
6240 | int slot; | |
6241 | struct imsm_map *map; | |
6242 | char buf[MAX_RAID_SERIAL_LEN+3]; | |
6243 | unsigned int len, shift = 0; | |
6244 | ||
6245 | /* new failures are always set in map[0] */ | |
6246 | map = get_imsm_map(dev, MAP_0); | |
6247 | ||
6248 | slot = get_imsm_disk_slot(map, idx); | |
6249 | if (slot < 0) | |
6250 | return 0; | |
6251 | ||
6252 | ord = __le32_to_cpu(map->disk_ord_tbl[slot]); | |
6253 | if (is_failed(disk) && (ord & IMSM_ORD_REBUILD)) | |
6254 | return 0; | |
6255 | ||
6256 | memcpy(buf, disk->serial, MAX_RAID_SERIAL_LEN); | |
6257 | buf[MAX_RAID_SERIAL_LEN] = '\000'; | |
6258 | strcat(buf, ":0"); | |
6259 | if ((len = strlen(buf)) >= MAX_RAID_SERIAL_LEN) | |
6260 | shift = len - MAX_RAID_SERIAL_LEN + 1; | |
6261 | strncpy((char *)disk->serial, &buf[shift], MAX_RAID_SERIAL_LEN); | |
6262 | ||
6263 | disk->status |= FAILED_DISK; | |
6264 | set_imsm_ord_tbl_ent(map, slot, idx | IMSM_ORD_REBUILD); | |
6265 | /* mark failures in second map if second map exists and this disk | |
6266 | * in this slot. | |
6267 | * This is valid for migration, initialization and rebuild | |
6268 | */ | |
6269 | if (dev->vol.migr_state) { | |
6270 | struct imsm_map *map2 = get_imsm_map(dev, MAP_1); | |
6271 | int slot2 = get_imsm_disk_slot(map2, idx); | |
6272 | ||
6273 | if ((slot2 < map2->num_members) && | |
6274 | (slot2 >= 0)) | |
6275 | set_imsm_ord_tbl_ent(map2, slot2, | |
6276 | idx | IMSM_ORD_REBUILD); | |
6277 | } | |
6278 | if (map->failed_disk_num == 0xff) | |
6279 | map->failed_disk_num = slot; | |
6280 | return 1; | |
6281 | } | |
6282 | ||
6283 | static void mark_missing(struct imsm_dev *dev, struct imsm_disk *disk, int idx) | |
6284 | { | |
6285 | mark_failure(dev, disk, idx); | |
6286 | ||
6287 | if (disk->scsi_id == __cpu_to_le32(~(__u32)0)) | |
6288 | return; | |
6289 | ||
6290 | disk->scsi_id = __cpu_to_le32(~(__u32)0); | |
6291 | memmove(&disk->serial[0], &disk->serial[1], MAX_RAID_SERIAL_LEN - 1); | |
6292 | } | |
6293 | ||
6294 | static void handle_missing(struct intel_super *super, struct imsm_dev *dev) | |
6295 | { | |
6296 | struct dl *dl; | |
6297 | ||
6298 | if (!super->missing) | |
6299 | return; | |
6300 | ||
6301 | dprintf("imsm: mark missing\n"); | |
6302 | /* end process for initialization and rebuild only | |
6303 | */ | |
6304 | if (is_gen_migration(dev) == 0) { | |
6305 | __u8 map_state; | |
6306 | int failed; | |
6307 | ||
6308 | failed = imsm_count_failed(super, dev, MAP_0); | |
6309 | map_state = imsm_check_degraded(super, dev, failed, MAP_0); | |
6310 | ||
6311 | end_migration(dev, super, map_state); | |
6312 | } | |
6313 | for (dl = super->missing; dl; dl = dl->next) | |
6314 | mark_missing(dev, &dl->disk, dl->index); | |
6315 | super->updates_pending++; | |
6316 | } | |
6317 | ||
6318 | static unsigned long long imsm_set_array_size(struct imsm_dev *dev) | |
6319 | { | |
6320 | int used_disks = imsm_num_data_members(dev, MAP_0); | |
6321 | unsigned long long array_blocks; | |
6322 | struct imsm_map *map; | |
6323 | ||
6324 | if (used_disks == 0) { | |
6325 | /* when problems occures | |
6326 | * return current array_blocks value | |
6327 | */ | |
6328 | array_blocks = __le32_to_cpu(dev->size_high); | |
6329 | array_blocks = array_blocks << 32; | |
6330 | array_blocks += __le32_to_cpu(dev->size_low); | |
6331 | ||
6332 | return array_blocks; | |
6333 | } | |
6334 | ||
6335 | /* set array size in metadata | |
6336 | */ | |
6337 | map = get_imsm_map(dev, MAP_0); | |
6338 | array_blocks = map->blocks_per_member * used_disks; | |
6339 | ||
6340 | /* round array size down to closest MB | |
6341 | */ | |
6342 | array_blocks = (array_blocks >> SECT_PER_MB_SHIFT) << SECT_PER_MB_SHIFT; | |
6343 | dev->size_low = __cpu_to_le32((__u32)array_blocks); | |
6344 | dev->size_high = __cpu_to_le32((__u32)(array_blocks >> 32)); | |
6345 | ||
6346 | return array_blocks; | |
6347 | } | |
6348 | ||
6349 | static void imsm_set_disk(struct active_array *a, int n, int state); | |
6350 | ||
6351 | static void imsm_progress_container_reshape(struct intel_super *super) | |
6352 | { | |
6353 | /* if no device has a migr_state, but some device has a | |
6354 | * different number of members than the previous device, start | |
6355 | * changing the number of devices in this device to match | |
6356 | * previous. | |
6357 | */ | |
6358 | struct imsm_super *mpb = super->anchor; | |
6359 | int prev_disks = -1; | |
6360 | int i; | |
6361 | int copy_map_size; | |
6362 | ||
6363 | for (i = 0; i < mpb->num_raid_devs; i++) { | |
6364 | struct imsm_dev *dev = get_imsm_dev(super, i); | |
6365 | struct imsm_map *map = get_imsm_map(dev, MAP_0); | |
6366 | struct imsm_map *map2; | |
6367 | int prev_num_members; | |
6368 | ||
6369 | if (dev->vol.migr_state) | |
6370 | return; | |
6371 | ||
6372 | if (prev_disks == -1) | |
6373 | prev_disks = map->num_members; | |
6374 | if (prev_disks == map->num_members) | |
6375 | continue; | |
6376 | ||
6377 | /* OK, this array needs to enter reshape mode. | |
6378 | * i.e it needs a migr_state | |
6379 | */ | |
6380 | ||
6381 | copy_map_size = sizeof_imsm_map(map); | |
6382 | prev_num_members = map->num_members; | |
6383 | map->num_members = prev_disks; | |
6384 | dev->vol.migr_state = 1; | |
6385 | dev->vol.curr_migr_unit = 0; | |
6386 | set_migr_type(dev, MIGR_GEN_MIGR); | |
6387 | for (i = prev_num_members; | |
6388 | i < map->num_members; i++) | |
6389 | set_imsm_ord_tbl_ent(map, i, i); | |
6390 | map2 = get_imsm_map(dev, MAP_1); | |
6391 | /* Copy the current map */ | |
6392 | memcpy(map2, map, copy_map_size); | |
6393 | map2->num_members = prev_num_members; | |
6394 | ||
6395 | imsm_set_array_size(dev); | |
6396 | super->updates_pending++; | |
6397 | } | |
6398 | } | |
6399 | ||
6400 | /* Handle dirty -> clean transititions, resync and reshape. Degraded and rebuild | |
6401 | * states are handled in imsm_set_disk() with one exception, when a | |
6402 | * resync is stopped due to a new failure this routine will set the | |
6403 | * 'degraded' state for the array. | |
6404 | */ | |
6405 | static int imsm_set_array_state(struct active_array *a, int consistent) | |
6406 | { | |
6407 | int inst = a->info.container_member; | |
6408 | struct intel_super *super = a->container->sb; | |
6409 | struct imsm_dev *dev = get_imsm_dev(super, inst); | |
6410 | struct imsm_map *map = get_imsm_map(dev, MAP_0); | |
6411 | int failed = imsm_count_failed(super, dev, MAP_0); | |
6412 | __u8 map_state = imsm_check_degraded(super, dev, failed, MAP_0); | |
6413 | __u32 blocks_per_unit; | |
6414 | ||
6415 | if (dev->vol.migr_state && | |
6416 | dev->vol.migr_type == MIGR_GEN_MIGR) { | |
6417 | /* array state change is blocked due to reshape action | |
6418 | * We might need to | |
6419 | * - abort the reshape (if last_checkpoint is 0 and action!= reshape) | |
6420 | * - finish the reshape (if last_checkpoint is big and action != reshape) | |
6421 | * - update curr_migr_unit | |
6422 | */ | |
6423 | if (a->curr_action == reshape) { | |
6424 | /* still reshaping, maybe update curr_migr_unit */ | |
6425 | goto mark_checkpoint; | |
6426 | } else { | |
6427 | if (a->last_checkpoint == 0 && a->prev_action == reshape) { | |
6428 | /* for some reason we aborted the reshape. | |
6429 | * | |
6430 | * disable automatic metadata rollback | |
6431 | * user action is required to recover process | |
6432 | */ | |
6433 | if (0) { | |
6434 | struct imsm_map *map2 = | |
6435 | get_imsm_map(dev, MAP_1); | |
6436 | dev->vol.migr_state = 0; | |
6437 | set_migr_type(dev, 0); | |
6438 | dev->vol.curr_migr_unit = 0; | |
6439 | memcpy(map, map2, | |
6440 | sizeof_imsm_map(map2)); | |
6441 | super->updates_pending++; | |
6442 | } | |
6443 | } | |
6444 | if (a->last_checkpoint >= a->info.component_size) { | |
6445 | unsigned long long array_blocks; | |
6446 | int used_disks; | |
6447 | struct mdinfo *mdi; | |
6448 | ||
6449 | used_disks = imsm_num_data_members(dev, MAP_0); | |
6450 | if (used_disks > 0) { | |
6451 | array_blocks = | |
6452 | map->blocks_per_member * | |
6453 | used_disks; | |
6454 | /* round array size down to closest MB | |
6455 | */ | |
6456 | array_blocks = (array_blocks | |
6457 | >> SECT_PER_MB_SHIFT) | |
6458 | << SECT_PER_MB_SHIFT; | |
6459 | a->info.custom_array_size = array_blocks; | |
6460 | /* encourage manager to update array | |
6461 | * size | |
6462 | */ | |
6463 | ||
6464 | a->check_reshape = 1; | |
6465 | } | |
6466 | /* finalize online capacity expansion/reshape */ | |
6467 | for (mdi = a->info.devs; mdi; mdi = mdi->next) | |
6468 | imsm_set_disk(a, | |
6469 | mdi->disk.raid_disk, | |
6470 | mdi->curr_state); | |
6471 | ||
6472 | imsm_progress_container_reshape(super); | |
6473 | } | |
6474 | } | |
6475 | } | |
6476 | ||
6477 | /* before we activate this array handle any missing disks */ | |
6478 | if (consistent == 2) | |
6479 | handle_missing(super, dev); | |
6480 | ||
6481 | if (consistent == 2 && | |
6482 | (!is_resync_complete(&a->info) || | |
6483 | map_state != IMSM_T_STATE_NORMAL || | |
6484 | dev->vol.migr_state)) | |
6485 | consistent = 0; | |
6486 | ||
6487 | if (is_resync_complete(&a->info)) { | |
6488 | /* complete intialization / resync, | |
6489 | * recovery and interrupted recovery is completed in | |
6490 | * ->set_disk | |
6491 | */ | |
6492 | if (is_resyncing(dev)) { | |
6493 | dprintf("imsm: mark resync done\n"); | |
6494 | end_migration(dev, super, map_state); | |
6495 | super->updates_pending++; | |
6496 | a->last_checkpoint = 0; | |
6497 | } | |
6498 | } else if ((!is_resyncing(dev) && !failed) && | |
6499 | (imsm_reshape_blocks_arrays_changes(super) == 0)) { | |
6500 | /* mark the start of the init process if nothing is failed */ | |
6501 | dprintf("imsm: mark resync start\n"); | |
6502 | if (map->map_state == IMSM_T_STATE_UNINITIALIZED) | |
6503 | migrate(dev, super, IMSM_T_STATE_NORMAL, MIGR_INIT); | |
6504 | else | |
6505 | migrate(dev, super, IMSM_T_STATE_NORMAL, MIGR_REPAIR); | |
6506 | super->updates_pending++; | |
6507 | } | |
6508 | ||
6509 | mark_checkpoint: | |
6510 | /* skip checkpointing for general migration, | |
6511 | * it is controlled in mdadm | |
6512 | */ | |
6513 | if (is_gen_migration(dev)) | |
6514 | goto skip_mark_checkpoint; | |
6515 | ||
6516 | /* check if we can update curr_migr_unit from resync_start, recovery_start */ | |
6517 | blocks_per_unit = blocks_per_migr_unit(super, dev); | |
6518 | if (blocks_per_unit) { | |
6519 | __u32 units32; | |
6520 | __u64 units; | |
6521 | ||
6522 | units = a->last_checkpoint / blocks_per_unit; | |
6523 | units32 = units; | |
6524 | ||
6525 | /* check that we did not overflow 32-bits, and that | |
6526 | * curr_migr_unit needs updating | |
6527 | */ | |
6528 | if (units32 == units && | |
6529 | units32 != 0 && | |
6530 | __le32_to_cpu(dev->vol.curr_migr_unit) != units32) { | |
6531 | dprintf("imsm: mark checkpoint (%u)\n", units32); | |
6532 | dev->vol.curr_migr_unit = __cpu_to_le32(units32); | |
6533 | super->updates_pending++; | |
6534 | } | |
6535 | } | |
6536 | ||
6537 | skip_mark_checkpoint: | |
6538 | /* mark dirty / clean */ | |
6539 | if (dev->vol.dirty != !consistent) { | |
6540 | dprintf("imsm: mark '%s'\n", consistent ? "clean" : "dirty"); | |
6541 | if (consistent) | |
6542 | dev->vol.dirty = 0; | |
6543 | else | |
6544 | dev->vol.dirty = 1; | |
6545 | super->updates_pending++; | |
6546 | } | |
6547 | ||
6548 | return consistent; | |
6549 | } | |
6550 | ||
6551 | static void imsm_set_disk(struct active_array *a, int n, int state) | |
6552 | { | |
6553 | int inst = a->info.container_member; | |
6554 | struct intel_super *super = a->container->sb; | |
6555 | struct imsm_dev *dev = get_imsm_dev(super, inst); | |
6556 | struct imsm_map *map = get_imsm_map(dev, MAP_0); | |
6557 | struct imsm_disk *disk; | |
6558 | int failed; | |
6559 | __u32 ord; | |
6560 | __u8 map_state; | |
6561 | ||
6562 | if (n > map->num_members) | |
6563 | fprintf(stderr, "imsm: set_disk %d out of range 0..%d\n", | |
6564 | n, map->num_members - 1); | |
6565 | ||
6566 | if (n < 0) | |
6567 | return; | |
6568 | ||
6569 | dprintf("imsm: set_disk %d:%x\n", n, state); | |
6570 | ||
6571 | ord = get_imsm_ord_tbl_ent(dev, n, MAP_0); | |
6572 | disk = get_imsm_disk(super, ord_to_idx(ord)); | |
6573 | ||
6574 | /* check for new failures */ | |
6575 | if (state & DS_FAULTY) { | |
6576 | if (mark_failure(dev, disk, ord_to_idx(ord))) | |
6577 | super->updates_pending++; | |
6578 | } | |
6579 | ||
6580 | /* check if in_sync */ | |
6581 | if (state & DS_INSYNC && ord & IMSM_ORD_REBUILD && is_rebuilding(dev)) { | |
6582 | struct imsm_map *migr_map = get_imsm_map(dev, MAP_1); | |
6583 | ||
6584 | set_imsm_ord_tbl_ent(migr_map, n, ord_to_idx(ord)); | |
6585 | super->updates_pending++; | |
6586 | } | |
6587 | ||
6588 | failed = imsm_count_failed(super, dev, MAP_0); | |
6589 | map_state = imsm_check_degraded(super, dev, failed, MAP_0); | |
6590 | ||
6591 | /* check if recovery complete, newly degraded, or failed */ | |
6592 | dprintf("imsm: Detected transition to state "); | |
6593 | switch (map_state) { | |
6594 | case IMSM_T_STATE_NORMAL: /* transition to normal state */ | |
6595 | dprintf("normal: "); | |
6596 | if (is_rebuilding(dev)) { | |
6597 | dprintf("while rebuilding"); | |
6598 | end_migration(dev, super, map_state); | |
6599 | map = get_imsm_map(dev, MAP_0); | |
6600 | map->failed_disk_num = ~0; | |
6601 | super->updates_pending++; | |
6602 | a->last_checkpoint = 0; | |
6603 | break; | |
6604 | } | |
6605 | if (is_gen_migration(dev)) { | |
6606 | dprintf("while general migration"); | |
6607 | if (a->last_checkpoint >= a->info.component_size) | |
6608 | end_migration(dev, super, map_state); | |
6609 | else | |
6610 | map->map_state = map_state; | |
6611 | map = get_imsm_map(dev, MAP_0); | |
6612 | map->failed_disk_num = ~0; | |
6613 | super->updates_pending++; | |
6614 | break; | |
6615 | } | |
6616 | break; | |
6617 | case IMSM_T_STATE_DEGRADED: /* transition to degraded state */ | |
6618 | dprintf("degraded: "); | |
6619 | if ((map->map_state != map_state) && | |
6620 | !dev->vol.migr_state) { | |
6621 | dprintf("mark degraded"); | |
6622 | map->map_state = map_state; | |
6623 | super->updates_pending++; | |
6624 | a->last_checkpoint = 0; | |
6625 | break; | |
6626 | } | |
6627 | if (is_rebuilding(dev)) { | |
6628 | dprintf("while rebuilding."); | |
6629 | if (map->map_state != map_state) { | |
6630 | dprintf(" Map state change"); | |
6631 | end_migration(dev, super, map_state); | |
6632 | super->updates_pending++; | |
6633 | } | |
6634 | break; | |
6635 | } | |
6636 | if (is_gen_migration(dev)) { | |
6637 | dprintf("while general migration"); | |
6638 | if (a->last_checkpoint >= a->info.component_size) | |
6639 | end_migration(dev, super, map_state); | |
6640 | else { | |
6641 | map->map_state = map_state; | |
6642 | manage_second_map(super, dev); | |
6643 | } | |
6644 | super->updates_pending++; | |
6645 | break; | |
6646 | } | |
6647 | if (is_initializing(dev)) { | |
6648 | dprintf("while initialization."); | |
6649 | map->map_state = map_state; | |
6650 | super->updates_pending++; | |
6651 | break; | |
6652 | } | |
6653 | break; | |
6654 | case IMSM_T_STATE_FAILED: /* transition to failed state */ | |
6655 | dprintf("failed: "); | |
6656 | if (is_gen_migration(dev)) { | |
6657 | dprintf("while general migration"); | |
6658 | map->map_state = map_state; | |
6659 | super->updates_pending++; | |
6660 | break; | |
6661 | } | |
6662 | if (map->map_state != map_state) { | |
6663 | dprintf("mark failed"); | |
6664 | end_migration(dev, super, map_state); | |
6665 | super->updates_pending++; | |
6666 | a->last_checkpoint = 0; | |
6667 | break; | |
6668 | } | |
6669 | break; | |
6670 | default: | |
6671 | dprintf("state %i\n", map_state); | |
6672 | } | |
6673 | dprintf("\n"); | |
6674 | ||
6675 | } | |
6676 | ||
6677 | static int store_imsm_mpb(int fd, struct imsm_super *mpb) | |
6678 | { | |
6679 | void *buf = mpb; | |
6680 | __u32 mpb_size = __le32_to_cpu(mpb->mpb_size); | |
6681 | unsigned long long dsize; | |
6682 | unsigned long long sectors; | |
6683 | ||
6684 | get_dev_size(fd, NULL, &dsize); | |
6685 | ||
6686 | if (mpb_size > 512) { | |
6687 | /* -1 to account for anchor */ | |
6688 | sectors = mpb_sectors(mpb) - 1; | |
6689 | ||
6690 | /* write the extended mpb to the sectors preceeding the anchor */ | |
6691 | if (lseek64(fd, dsize - (512 * (2 + sectors)), SEEK_SET) < 0) | |
6692 | return 1; | |
6693 | ||
6694 | if ((unsigned long long)write(fd, buf + 512, 512 * sectors) | |
6695 | != 512 * sectors) | |
6696 | return 1; | |
6697 | } | |
6698 | ||
6699 | /* first block is stored on second to last sector of the disk */ | |
6700 | if (lseek64(fd, dsize - (512 * 2), SEEK_SET) < 0) | |
6701 | return 1; | |
6702 | ||
6703 | if (write(fd, buf, 512) != 512) | |
6704 | return 1; | |
6705 | ||
6706 | return 0; | |
6707 | } | |
6708 | ||
6709 | static void imsm_sync_metadata(struct supertype *container) | |
6710 | { | |
6711 | struct intel_super *super = container->sb; | |
6712 | ||
6713 | dprintf("sync metadata: %d\n", super->updates_pending); | |
6714 | if (!super->updates_pending) | |
6715 | return; | |
6716 | ||
6717 | write_super_imsm(container, 0); | |
6718 | ||
6719 | super->updates_pending = 0; | |
6720 | } | |
6721 | ||
6722 | static struct dl *imsm_readd(struct intel_super *super, int idx, struct active_array *a) | |
6723 | { | |
6724 | struct imsm_dev *dev = get_imsm_dev(super, a->info.container_member); | |
6725 | int i = get_imsm_disk_idx(dev, idx, MAP_X); | |
6726 | struct dl *dl; | |
6727 | ||
6728 | for (dl = super->disks; dl; dl = dl->next) | |
6729 | if (dl->index == i) | |
6730 | break; | |
6731 | ||
6732 | if (dl && is_failed(&dl->disk)) | |
6733 | dl = NULL; | |
6734 | ||
6735 | if (dl) | |
6736 | dprintf("%s: found %x:%x\n", __func__, dl->major, dl->minor); | |
6737 | ||
6738 | return dl; | |
6739 | } | |
6740 | ||
6741 | static struct dl *imsm_add_spare(struct intel_super *super, int slot, | |
6742 | struct active_array *a, int activate_new, | |
6743 | struct mdinfo *additional_test_list) | |
6744 | { | |
6745 | struct imsm_dev *dev = get_imsm_dev(super, a->info.container_member); | |
6746 | int idx = get_imsm_disk_idx(dev, slot, MAP_X); | |
6747 | struct imsm_super *mpb = super->anchor; | |
6748 | struct imsm_map *map; | |
6749 | unsigned long long pos; | |
6750 | struct mdinfo *d; | |
6751 | struct extent *ex; | |
6752 | int i, j; | |
6753 | int found; | |
6754 | __u32 array_start = 0; | |
6755 | __u32 array_end = 0; | |
6756 | struct dl *dl; | |
6757 | struct mdinfo *test_list; | |
6758 | ||
6759 | for (dl = super->disks; dl; dl = dl->next) { | |
6760 | /* If in this array, skip */ | |
6761 | for (d = a->info.devs ; d ; d = d->next) | |
6762 | if (d->state_fd >= 0 && | |
6763 | d->disk.major == dl->major && | |
6764 | d->disk.minor == dl->minor) { | |
6765 | dprintf("%x:%x already in array\n", | |
6766 | dl->major, dl->minor); | |
6767 | break; | |
6768 | } | |
6769 | if (d) | |
6770 | continue; | |
6771 | test_list = additional_test_list; | |
6772 | while (test_list) { | |
6773 | if (test_list->disk.major == dl->major && | |
6774 | test_list->disk.minor == dl->minor) { | |
6775 | dprintf("%x:%x already in additional test list\n", | |
6776 | dl->major, dl->minor); | |
6777 | break; | |
6778 | } | |
6779 | test_list = test_list->next; | |
6780 | } | |
6781 | if (test_list) | |
6782 | continue; | |
6783 | ||
6784 | /* skip in use or failed drives */ | |
6785 | if (is_failed(&dl->disk) || idx == dl->index || | |
6786 | dl->index == -2) { | |
6787 | dprintf("%x:%x status (failed: %d index: %d)\n", | |
6788 | dl->major, dl->minor, is_failed(&dl->disk), idx); | |
6789 | continue; | |
6790 | } | |
6791 | ||
6792 | /* skip pure spares when we are looking for partially | |
6793 | * assimilated drives | |
6794 | */ | |
6795 | if (dl->index == -1 && !activate_new) | |
6796 | continue; | |
6797 | ||
6798 | /* Does this unused device have the requisite free space? | |
6799 | * It needs to be able to cover all member volumes | |
6800 | */ | |
6801 | ex = get_extents(super, dl); | |
6802 | if (!ex) { | |
6803 | dprintf("cannot get extents\n"); | |
6804 | continue; | |
6805 | } | |
6806 | for (i = 0; i < mpb->num_raid_devs; i++) { | |
6807 | dev = get_imsm_dev(super, i); | |
6808 | map = get_imsm_map(dev, MAP_0); | |
6809 | ||
6810 | /* check if this disk is already a member of | |
6811 | * this array | |
6812 | */ | |
6813 | if (get_imsm_disk_slot(map, dl->index) >= 0) | |
6814 | continue; | |
6815 | ||
6816 | found = 0; | |
6817 | j = 0; | |
6818 | pos = 0; | |
6819 | array_start = __le32_to_cpu(map->pba_of_lba0); | |
6820 | array_end = array_start + | |
6821 | __le32_to_cpu(map->blocks_per_member) - 1; | |
6822 | ||
6823 | do { | |
6824 | /* check that we can start at pba_of_lba0 with | |
6825 | * blocks_per_member of space | |
6826 | */ | |
6827 | if (array_start >= pos && array_end < ex[j].start) { | |
6828 | found = 1; | |
6829 | break; | |
6830 | } | |
6831 | pos = ex[j].start + ex[j].size; | |
6832 | j++; | |
6833 | } while (ex[j-1].size); | |
6834 | ||
6835 | if (!found) | |
6836 | break; | |
6837 | } | |
6838 | ||
6839 | free(ex); | |
6840 | if (i < mpb->num_raid_devs) { | |
6841 | dprintf("%x:%x does not have %u to %u available\n", | |
6842 | dl->major, dl->minor, array_start, array_end); | |
6843 | /* No room */ | |
6844 | continue; | |
6845 | } | |
6846 | return dl; | |
6847 | } | |
6848 | ||
6849 | return dl; | |
6850 | } | |
6851 | ||
6852 | ||
6853 | static int imsm_rebuild_allowed(struct supertype *cont, int dev_idx, int failed) | |
6854 | { | |
6855 | struct imsm_dev *dev2; | |
6856 | struct imsm_map *map; | |
6857 | struct dl *idisk; | |
6858 | int slot; | |
6859 | int idx; | |
6860 | __u8 state; | |
6861 | ||
6862 | dev2 = get_imsm_dev(cont->sb, dev_idx); | |
6863 | if (dev2) { | |
6864 | state = imsm_check_degraded(cont->sb, dev2, failed, MAP_0); | |
6865 | if (state == IMSM_T_STATE_FAILED) { | |
6866 | map = get_imsm_map(dev2, MAP_0); | |
6867 | if (!map) | |
6868 | return 1; | |
6869 | for (slot = 0; slot < map->num_members; slot++) { | |
6870 | /* | |
6871 | * Check if failed disks are deleted from intel | |
6872 | * disk list or are marked to be deleted | |
6873 | */ | |
6874 | idx = get_imsm_disk_idx(dev2, slot, MAP_X); | |
6875 | idisk = get_imsm_dl_disk(cont->sb, idx); | |
6876 | /* | |
6877 | * Do not rebuild the array if failed disks | |
6878 | * from failed sub-array are not removed from | |
6879 | * container. | |
6880 | */ | |
6881 | if (idisk && | |
6882 | is_failed(&idisk->disk) && | |
6883 | (idisk->action != DISK_REMOVE)) | |
6884 | return 0; | |
6885 | } | |
6886 | } | |
6887 | } | |
6888 | return 1; | |
6889 | } | |
6890 | ||
6891 | static struct mdinfo *imsm_activate_spare(struct active_array *a, | |
6892 | struct metadata_update **updates) | |
6893 | { | |
6894 | /** | |
6895 | * Find a device with unused free space and use it to replace a | |
6896 | * failed/vacant region in an array. We replace failed regions one a | |
6897 | * array at a time. The result is that a new spare disk will be added | |
6898 | * to the first failed array and after the monitor has finished | |
6899 | * propagating failures the remainder will be consumed. | |
6900 | * | |
6901 | * FIXME add a capability for mdmon to request spares from another | |
6902 | * container. | |
6903 | */ | |
6904 | ||
6905 | struct intel_super *super = a->container->sb; | |
6906 | int inst = a->info.container_member; | |
6907 | struct imsm_dev *dev = get_imsm_dev(super, inst); | |
6908 | struct imsm_map *map = get_imsm_map(dev, MAP_0); | |
6909 | int failed = a->info.array.raid_disks; | |
6910 | struct mdinfo *rv = NULL; | |
6911 | struct mdinfo *d; | |
6912 | struct mdinfo *di; | |
6913 | struct metadata_update *mu; | |
6914 | struct dl *dl; | |
6915 | struct imsm_update_activate_spare *u; | |
6916 | int num_spares = 0; | |
6917 | int i; | |
6918 | int allowed; | |
6919 | ||
6920 | for (d = a->info.devs ; d ; d = d->next) { | |
6921 | if ((d->curr_state & DS_FAULTY) && | |
6922 | d->state_fd >= 0) | |
6923 | /* wait for Removal to happen */ | |
6924 | return NULL; | |
6925 | if (d->state_fd >= 0) | |
6926 | failed--; | |
6927 | } | |
6928 | ||
6929 | dprintf("imsm: activate spare: inst=%d failed=%d (%d) level=%d\n", | |
6930 | inst, failed, a->info.array.raid_disks, a->info.array.level); | |
6931 | ||
6932 | if (imsm_reshape_blocks_arrays_changes(super)) | |
6933 | return NULL; | |
6934 | ||
6935 | /* Cannot activate another spare if rebuild is in progress already | |
6936 | */ | |
6937 | if (is_rebuilding(dev)) { | |
6938 | dprintf("imsm: No spare activation allowed. " | |
6939 | "Rebuild in progress already.\n"); | |
6940 | return NULL; | |
6941 | } | |
6942 | ||
6943 | if (a->info.array.level == 4) | |
6944 | /* No repair for takeovered array | |
6945 | * imsm doesn't support raid4 | |
6946 | */ | |
6947 | return NULL; | |
6948 | ||
6949 | if (imsm_check_degraded(super, dev, failed, MAP_0) != | |
6950 | IMSM_T_STATE_DEGRADED) | |
6951 | return NULL; | |
6952 | ||
6953 | /* | |
6954 | * If there are any failed disks check state of the other volume. | |
6955 | * Block rebuild if the another one is failed until failed disks | |
6956 | * are removed from container. | |
6957 | */ | |
6958 | if (failed) { | |
6959 | dprintf("found failed disks in %.*s, check if there another" | |
6960 | "failed sub-array.\n", | |
6961 | MAX_RAID_SERIAL_LEN, dev->volume); | |
6962 | /* check if states of the other volumes allow for rebuild */ | |
6963 | for (i = 0; i < super->anchor->num_raid_devs; i++) { | |
6964 | if (i != inst) { | |
6965 | allowed = imsm_rebuild_allowed(a->container, | |
6966 | i, failed); | |
6967 | if (!allowed) | |
6968 | return NULL; | |
6969 | } | |
6970 | } | |
6971 | } | |
6972 | ||
6973 | /* For each slot, if it is not working, find a spare */ | |
6974 | for (i = 0; i < a->info.array.raid_disks; i++) { | |
6975 | for (d = a->info.devs ; d ; d = d->next) | |
6976 | if (d->disk.raid_disk == i) | |
6977 | break; | |
6978 | dprintf("found %d: %p %x\n", i, d, d?d->curr_state:0); | |
6979 | if (d && (d->state_fd >= 0)) | |
6980 | continue; | |
6981 | ||
6982 | /* | |
6983 | * OK, this device needs recovery. Try to re-add the | |
6984 | * previous occupant of this slot, if this fails see if | |
6985 | * we can continue the assimilation of a spare that was | |
6986 | * partially assimilated, finally try to activate a new | |
6987 | * spare. | |
6988 | */ | |
6989 | dl = imsm_readd(super, i, a); | |
6990 | if (!dl) | |
6991 | dl = imsm_add_spare(super, i, a, 0, rv); | |
6992 | if (!dl) | |
6993 | dl = imsm_add_spare(super, i, a, 1, rv); | |
6994 | if (!dl) | |
6995 | continue; | |
6996 | ||
6997 | /* found a usable disk with enough space */ | |
6998 | di = malloc(sizeof(*di)); | |
6999 | if (!di) | |
7000 | continue; | |
7001 | memset(di, 0, sizeof(*di)); | |
7002 | ||
7003 | /* dl->index will be -1 in the case we are activating a | |
7004 | * pristine spare. imsm_process_update() will create a | |
7005 | * new index in this case. Once a disk is found to be | |
7006 | * failed in all member arrays it is kicked from the | |
7007 | * metadata | |
7008 | */ | |
7009 | di->disk.number = dl->index; | |
7010 | ||
7011 | /* (ab)use di->devs to store a pointer to the device | |
7012 | * we chose | |
7013 | */ | |
7014 | di->devs = (struct mdinfo *) dl; | |
7015 | ||
7016 | di->disk.raid_disk = i; | |
7017 | di->disk.major = dl->major; | |
7018 | di->disk.minor = dl->minor; | |
7019 | di->disk.state = 0; | |
7020 | di->recovery_start = 0; | |
7021 | di->data_offset = __le32_to_cpu(map->pba_of_lba0); | |
7022 | di->component_size = a->info.component_size; | |
7023 | di->container_member = inst; | |
7024 | super->random = random32(); | |
7025 | di->next = rv; | |
7026 | rv = di; | |
7027 | num_spares++; | |
7028 | dprintf("%x:%x to be %d at %llu\n", dl->major, dl->minor, | |
7029 | i, di->data_offset); | |
7030 | } | |
7031 | ||
7032 | if (!rv) | |
7033 | /* No spares found */ | |
7034 | return rv; | |
7035 | /* Now 'rv' has a list of devices to return. | |
7036 | * Create a metadata_update record to update the | |
7037 | * disk_ord_tbl for the array | |
7038 | */ | |
7039 | mu = malloc(sizeof(*mu)); | |
7040 | if (mu) { | |
7041 | mu->buf = malloc(sizeof(struct imsm_update_activate_spare) * num_spares); | |
7042 | if (mu->buf == NULL) { | |
7043 | free(mu); | |
7044 | mu = NULL; | |
7045 | } | |
7046 | } | |
7047 | if (!mu) { | |
7048 | while (rv) { | |
7049 | struct mdinfo *n = rv->next; | |
7050 | ||
7051 | free(rv); | |
7052 | rv = n; | |
7053 | } | |
7054 | return NULL; | |
7055 | } | |
7056 | ||
7057 | mu->space = NULL; | |
7058 | mu->space_list = NULL; | |
7059 | mu->len = sizeof(struct imsm_update_activate_spare) * num_spares; | |
7060 | mu->next = *updates; | |
7061 | u = (struct imsm_update_activate_spare *) mu->buf; | |
7062 | ||
7063 | for (di = rv ; di ; di = di->next) { | |
7064 | u->type = update_activate_spare; | |
7065 | u->dl = (struct dl *) di->devs; | |
7066 | di->devs = NULL; | |
7067 | u->slot = di->disk.raid_disk; | |
7068 | u->array = inst; | |
7069 | u->next = u + 1; | |
7070 | u++; | |
7071 | } | |
7072 | (u-1)->next = NULL; | |
7073 | *updates = mu; | |
7074 | ||
7075 | return rv; | |
7076 | } | |
7077 | ||
7078 | static int disks_overlap(struct intel_super *super, int idx, struct imsm_update_create_array *u) | |
7079 | { | |
7080 | struct imsm_dev *dev = get_imsm_dev(super, idx); | |
7081 | struct imsm_map *map = get_imsm_map(dev, MAP_0); | |
7082 | struct imsm_map *new_map = get_imsm_map(&u->dev, MAP_0); | |
7083 | struct disk_info *inf = get_disk_info(u); | |
7084 | struct imsm_disk *disk; | |
7085 | int i; | |
7086 | int j; | |
7087 | ||
7088 | for (i = 0; i < map->num_members; i++) { | |
7089 | disk = get_imsm_disk(super, get_imsm_disk_idx(dev, i, MAP_X)); | |
7090 | for (j = 0; j < new_map->num_members; j++) | |
7091 | if (serialcmp(disk->serial, inf[j].serial) == 0) | |
7092 | return 1; | |
7093 | } | |
7094 | ||
7095 | return 0; | |
7096 | } | |
7097 | ||
7098 | ||
7099 | static struct dl *get_disk_super(struct intel_super *super, int major, int minor) | |
7100 | { | |
7101 | struct dl *dl = NULL; | |
7102 | for (dl = super->disks; dl; dl = dl->next) | |
7103 | if ((dl->major == major) && (dl->minor == minor)) | |
7104 | return dl; | |
7105 | return NULL; | |
7106 | } | |
7107 | ||
7108 | static int remove_disk_super(struct intel_super *super, int major, int minor) | |
7109 | { | |
7110 | struct dl *prev = NULL; | |
7111 | struct dl *dl; | |
7112 | ||
7113 | prev = NULL; | |
7114 | for (dl = super->disks; dl; dl = dl->next) { | |
7115 | if ((dl->major == major) && (dl->minor == minor)) { | |
7116 | /* remove */ | |
7117 | if (prev) | |
7118 | prev->next = dl->next; | |
7119 | else | |
7120 | super->disks = dl->next; | |
7121 | dl->next = NULL; | |
7122 | __free_imsm_disk(dl); | |
7123 | dprintf("%s: removed %x:%x\n", | |
7124 | __func__, major, minor); | |
7125 | break; | |
7126 | } | |
7127 | prev = dl; | |
7128 | } | |
7129 | return 0; | |
7130 | } | |
7131 | ||
7132 | static void imsm_delete(struct intel_super *super, struct dl **dlp, unsigned index); | |
7133 | ||
7134 | static int add_remove_disk_update(struct intel_super *super) | |
7135 | { | |
7136 | int check_degraded = 0; | |
7137 | struct dl *disk = NULL; | |
7138 | /* add/remove some spares to/from the metadata/contrainer */ | |
7139 | while (super->disk_mgmt_list) { | |
7140 | struct dl *disk_cfg; | |
7141 | ||
7142 | disk_cfg = super->disk_mgmt_list; | |
7143 | super->disk_mgmt_list = disk_cfg->next; | |
7144 | disk_cfg->next = NULL; | |
7145 | ||
7146 | if (disk_cfg->action == DISK_ADD) { | |
7147 | disk_cfg->next = super->disks; | |
7148 | super->disks = disk_cfg; | |
7149 | check_degraded = 1; | |
7150 | dprintf("%s: added %x:%x\n", | |
7151 | __func__, disk_cfg->major, | |
7152 | disk_cfg->minor); | |
7153 | } else if (disk_cfg->action == DISK_REMOVE) { | |
7154 | dprintf("Disk remove action processed: %x.%x\n", | |
7155 | disk_cfg->major, disk_cfg->minor); | |
7156 | disk = get_disk_super(super, | |
7157 | disk_cfg->major, | |
7158 | disk_cfg->minor); | |
7159 | if (disk) { | |
7160 | /* store action status */ | |
7161 | disk->action = DISK_REMOVE; | |
7162 | /* remove spare disks only */ | |
7163 | if (disk->index == -1) { | |
7164 | remove_disk_super(super, | |
7165 | disk_cfg->major, | |
7166 | disk_cfg->minor); | |
7167 | } | |
7168 | } | |
7169 | /* release allocate disk structure */ | |
7170 | __free_imsm_disk(disk_cfg); | |
7171 | } | |
7172 | } | |
7173 | return check_degraded; | |
7174 | } | |
7175 | ||
7176 | ||
7177 | static int apply_reshape_migration_update(struct imsm_update_reshape_migration *u, | |
7178 | struct intel_super *super, | |
7179 | void ***space_list) | |
7180 | { | |
7181 | struct intel_dev *id; | |
7182 | void **tofree = NULL; | |
7183 | int ret_val = 0; | |
7184 | ||
7185 | dprintf("apply_reshape_migration_update()\n"); | |
7186 | if ((u->subdev < 0) || | |
7187 | (u->subdev > 1)) { | |
7188 | dprintf("imsm: Error: Wrong subdev: %i\n", u->subdev); | |
7189 | return ret_val; | |
7190 | } | |
7191 | if ((space_list == NULL) || (*space_list == NULL)) { | |
7192 | dprintf("imsm: Error: Memory is not allocated\n"); | |
7193 | return ret_val; | |
7194 | } | |
7195 | ||
7196 | for (id = super->devlist ; id; id = id->next) { | |
7197 | if (id->index == (unsigned)u->subdev) { | |
7198 | struct imsm_dev *dev = get_imsm_dev(super, u->subdev); | |
7199 | struct imsm_map *map; | |
7200 | struct imsm_dev *new_dev = | |
7201 | (struct imsm_dev *)*space_list; | |
7202 | struct imsm_map *migr_map = get_imsm_map(dev, MAP_1); | |
7203 | int to_state; | |
7204 | struct dl *new_disk; | |
7205 | ||
7206 | if (new_dev == NULL) | |
7207 | return ret_val; | |
7208 | *space_list = **space_list; | |
7209 | memcpy(new_dev, dev, sizeof_imsm_dev(dev, 0)); | |
7210 | map = get_imsm_map(new_dev, MAP_0); | |
7211 | if (migr_map) { | |
7212 | dprintf("imsm: Error: migration in progress"); | |
7213 | return ret_val; | |
7214 | } | |
7215 | ||
7216 | to_state = map->map_state; | |
7217 | if ((u->new_level == 5) && (map->raid_level == 0)) { | |
7218 | map->num_members++; | |
7219 | /* this should not happen */ | |
7220 | if (u->new_disks[0] < 0) { | |
7221 | map->failed_disk_num = | |
7222 | map->num_members - 1; | |
7223 | to_state = IMSM_T_STATE_DEGRADED; | |
7224 | } else | |
7225 | to_state = IMSM_T_STATE_NORMAL; | |
7226 | } | |
7227 | migrate(new_dev, super, to_state, MIGR_GEN_MIGR); | |
7228 | if (u->new_level > -1) | |
7229 | map->raid_level = u->new_level; | |
7230 | migr_map = get_imsm_map(new_dev, MAP_1); | |
7231 | if ((u->new_level == 5) && | |
7232 | (migr_map->raid_level == 0)) { | |
7233 | int ord = map->num_members - 1; | |
7234 | migr_map->num_members--; | |
7235 | if (u->new_disks[0] < 0) | |
7236 | ord |= IMSM_ORD_REBUILD; | |
7237 | set_imsm_ord_tbl_ent(map, | |
7238 | map->num_members - 1, | |
7239 | ord); | |
7240 | } | |
7241 | id->dev = new_dev; | |
7242 | tofree = (void **)dev; | |
7243 | ||
7244 | /* update chunk size | |
7245 | */ | |
7246 | if (u->new_chunksize > 0) | |
7247 | map->blocks_per_strip = | |
7248 | __cpu_to_le16(u->new_chunksize * 2); | |
7249 | ||
7250 | /* add disk | |
7251 | */ | |
7252 | if ((u->new_level != 5) || | |
7253 | (migr_map->raid_level != 0) || | |
7254 | (migr_map->raid_level == map->raid_level)) | |
7255 | goto skip_disk_add; | |
7256 | ||
7257 | if (u->new_disks[0] >= 0) { | |
7258 | /* use passes spare | |
7259 | */ | |
7260 | new_disk = get_disk_super(super, | |
7261 | major(u->new_disks[0]), | |
7262 | minor(u->new_disks[0])); | |
7263 | dprintf("imsm: new disk for reshape is: %i:%i " | |
7264 | "(%p, index = %i)\n", | |
7265 | major(u->new_disks[0]), | |
7266 | minor(u->new_disks[0]), | |
7267 | new_disk, new_disk->index); | |
7268 | if (new_disk == NULL) | |
7269 | goto error_disk_add; | |
7270 | ||
7271 | new_disk->index = map->num_members - 1; | |
7272 | /* slot to fill in autolayout | |
7273 | */ | |
7274 | new_disk->raiddisk = new_disk->index; | |
7275 | new_disk->disk.status |= CONFIGURED_DISK; | |
7276 | new_disk->disk.status &= ~SPARE_DISK; | |
7277 | } else | |
7278 | goto error_disk_add; | |
7279 | ||
7280 | skip_disk_add: | |
7281 | *tofree = *space_list; | |
7282 | /* calculate new size | |
7283 | */ | |
7284 | imsm_set_array_size(new_dev); | |
7285 | ||
7286 | ret_val = 1; | |
7287 | } | |
7288 | } | |
7289 | ||
7290 | if (tofree) | |
7291 | *space_list = tofree; | |
7292 | return ret_val; | |
7293 | ||
7294 | error_disk_add: | |
7295 | dprintf("Error: imsm: Cannot find disk.\n"); | |
7296 | return ret_val; | |
7297 | } | |
7298 | ||
7299 | static int apply_update_activate_spare(struct imsm_update_activate_spare *u, | |
7300 | struct intel_super *super, | |
7301 | struct active_array *active_array) | |
7302 | { | |
7303 | struct imsm_super *mpb = super->anchor; | |
7304 | struct imsm_dev *dev = get_imsm_dev(super, u->array); | |
7305 | struct imsm_map *map = get_imsm_map(dev, MAP_0); | |
7306 | struct imsm_map *migr_map; | |
7307 | struct active_array *a; | |
7308 | struct imsm_disk *disk; | |
7309 | __u8 to_state; | |
7310 | struct dl *dl; | |
7311 | unsigned int found; | |
7312 | int failed; | |
7313 | int victim; | |
7314 | int i; | |
7315 | int second_map_created = 0; | |
7316 | ||
7317 | for (; u; u = u->next) { | |
7318 | victim = get_imsm_disk_idx(dev, u->slot, MAP_X); | |
7319 | ||
7320 | if (victim < 0) | |
7321 | return 0; | |
7322 | ||
7323 | for (dl = super->disks; dl; dl = dl->next) | |
7324 | if (dl == u->dl) | |
7325 | break; | |
7326 | ||
7327 | if (!dl) { | |
7328 | fprintf(stderr, "error: imsm_activate_spare passed " | |
7329 | "an unknown disk (index: %d)\n", | |
7330 | u->dl->index); | |
7331 | return 0; | |
7332 | } | |
7333 | ||
7334 | /* count failures (excluding rebuilds and the victim) | |
7335 | * to determine map[0] state | |
7336 | */ | |
7337 | failed = 0; | |
7338 | for (i = 0; i < map->num_members; i++) { | |
7339 | if (i == u->slot) | |
7340 | continue; | |
7341 | disk = get_imsm_disk(super, | |
7342 | get_imsm_disk_idx(dev, i, MAP_X)); | |
7343 | if (!disk || is_failed(disk)) | |
7344 | failed++; | |
7345 | } | |
7346 | ||
7347 | /* adding a pristine spare, assign a new index */ | |
7348 | if (dl->index < 0) { | |
7349 | dl->index = super->anchor->num_disks; | |
7350 | super->anchor->num_disks++; | |
7351 | } | |
7352 | disk = &dl->disk; | |
7353 | disk->status |= CONFIGURED_DISK; | |
7354 | disk->status &= ~SPARE_DISK; | |
7355 | ||
7356 | /* mark rebuild */ | |
7357 | to_state = imsm_check_degraded(super, dev, failed, MAP_0); | |
7358 | if (!second_map_created) { | |
7359 | second_map_created = 1; | |
7360 | map->map_state = IMSM_T_STATE_DEGRADED; | |
7361 | migrate(dev, super, to_state, MIGR_REBUILD); | |
7362 | } else | |
7363 | map->map_state = to_state; | |
7364 | migr_map = get_imsm_map(dev, MAP_1); | |
7365 | set_imsm_ord_tbl_ent(map, u->slot, dl->index); | |
7366 | set_imsm_ord_tbl_ent(migr_map, u->slot, | |
7367 | dl->index | IMSM_ORD_REBUILD); | |
7368 | ||
7369 | /* update the family_num to mark a new container | |
7370 | * generation, being careful to record the existing | |
7371 | * family_num in orig_family_num to clean up after | |
7372 | * earlier mdadm versions that neglected to set it. | |
7373 | */ | |
7374 | if (mpb->orig_family_num == 0) | |
7375 | mpb->orig_family_num = mpb->family_num; | |
7376 | mpb->family_num += super->random; | |
7377 | ||
7378 | /* count arrays using the victim in the metadata */ | |
7379 | found = 0; | |
7380 | for (a = active_array; a ; a = a->next) { | |
7381 | dev = get_imsm_dev(super, a->info.container_member); | |
7382 | map = get_imsm_map(dev, MAP_0); | |
7383 | ||
7384 | if (get_imsm_disk_slot(map, victim) >= 0) | |
7385 | found++; | |
7386 | } | |
7387 | ||
7388 | /* delete the victim if it is no longer being | |
7389 | * utilized anywhere | |
7390 | */ | |
7391 | if (!found) { | |
7392 | struct dl **dlp; | |
7393 | ||
7394 | /* We know that 'manager' isn't touching anything, | |
7395 | * so it is safe to delete | |
7396 | */ | |
7397 | for (dlp = &super->disks; *dlp; dlp = &(*dlp)->next) | |
7398 | if ((*dlp)->index == victim) | |
7399 | break; | |
7400 | ||
7401 | /* victim may be on the missing list */ | |
7402 | if (!*dlp) | |
7403 | for (dlp = &super->missing; *dlp; | |
7404 | dlp = &(*dlp)->next) | |
7405 | if ((*dlp)->index == victim) | |
7406 | break; | |
7407 | imsm_delete(super, dlp, victim); | |
7408 | } | |
7409 | } | |
7410 | ||
7411 | return 1; | |
7412 | } | |
7413 | ||
7414 | static int apply_reshape_container_disks_update(struct imsm_update_reshape *u, | |
7415 | struct intel_super *super, | |
7416 | void ***space_list) | |
7417 | { | |
7418 | struct dl *new_disk; | |
7419 | struct intel_dev *id; | |
7420 | int i; | |
7421 | int delta_disks = u->new_raid_disks - u->old_raid_disks; | |
7422 | int disk_count = u->old_raid_disks; | |
7423 | void **tofree = NULL; | |
7424 | int devices_to_reshape = 1; | |
7425 | struct imsm_super *mpb = super->anchor; | |
7426 | int ret_val = 0; | |
7427 | unsigned int dev_id; | |
7428 | ||
7429 | dprintf("imsm: apply_reshape_container_disks_update()\n"); | |
7430 | ||
7431 | /* enable spares to use in array */ | |
7432 | for (i = 0; i < delta_disks; i++) { | |
7433 | new_disk = get_disk_super(super, | |
7434 | major(u->new_disks[i]), | |
7435 | minor(u->new_disks[i])); | |
7436 | dprintf("imsm: new disk for reshape is: %i:%i " | |
7437 | "(%p, index = %i)\n", | |
7438 | major(u->new_disks[i]), minor(u->new_disks[i]), | |
7439 | new_disk, new_disk->index); | |
7440 | if ((new_disk == NULL) || | |
7441 | ((new_disk->index >= 0) && | |
7442 | (new_disk->index < u->old_raid_disks))) | |
7443 | goto update_reshape_exit; | |
7444 | new_disk->index = disk_count++; | |
7445 | /* slot to fill in autolayout | |
7446 | */ | |
7447 | new_disk->raiddisk = new_disk->index; | |
7448 | new_disk->disk.status |= | |
7449 | CONFIGURED_DISK; | |
7450 | new_disk->disk.status &= ~SPARE_DISK; | |
7451 | } | |
7452 | ||
7453 | dprintf("imsm: volume set mpb->num_raid_devs = %i\n", | |
7454 | mpb->num_raid_devs); | |
7455 | /* manage changes in volume | |
7456 | */ | |
7457 | for (dev_id = 0; dev_id < mpb->num_raid_devs; dev_id++) { | |
7458 | void **sp = *space_list; | |
7459 | struct imsm_dev *newdev; | |
7460 | struct imsm_map *newmap, *oldmap; | |
7461 | ||
7462 | for (id = super->devlist ; id; id = id->next) { | |
7463 | if (id->index == dev_id) | |
7464 | break; | |
7465 | } | |
7466 | if (id == NULL) | |
7467 | break; | |
7468 | if (!sp) | |
7469 | continue; | |
7470 | *space_list = *sp; | |
7471 | newdev = (void*)sp; | |
7472 | /* Copy the dev, but not (all of) the map */ | |
7473 | memcpy(newdev, id->dev, sizeof(*newdev)); | |
7474 | oldmap = get_imsm_map(id->dev, MAP_0); | |
7475 | newmap = get_imsm_map(newdev, MAP_0); | |
7476 | /* Copy the current map */ | |
7477 | memcpy(newmap, oldmap, sizeof_imsm_map(oldmap)); | |
7478 | /* update one device only | |
7479 | */ | |
7480 | if (devices_to_reshape) { | |
7481 | dprintf("imsm: modifying subdev: %i\n", | |
7482 | id->index); | |
7483 | devices_to_reshape--; | |
7484 | newdev->vol.migr_state = 1; | |
7485 | newdev->vol.curr_migr_unit = 0; | |
7486 | set_migr_type(newdev, MIGR_GEN_MIGR); | |
7487 | newmap->num_members = u->new_raid_disks; | |
7488 | for (i = 0; i < delta_disks; i++) { | |
7489 | set_imsm_ord_tbl_ent(newmap, | |
7490 | u->old_raid_disks + i, | |
7491 | u->old_raid_disks + i); | |
7492 | } | |
7493 | /* New map is correct, now need to save old map | |
7494 | */ | |
7495 | newmap = get_imsm_map(newdev, MAP_1); | |
7496 | memcpy(newmap, oldmap, sizeof_imsm_map(oldmap)); | |
7497 | ||
7498 | imsm_set_array_size(newdev); | |
7499 | } | |
7500 | ||
7501 | sp = (void **)id->dev; | |
7502 | id->dev = newdev; | |
7503 | *sp = tofree; | |
7504 | tofree = sp; | |
7505 | ||
7506 | /* Clear migration record */ | |
7507 | memset(super->migr_rec, 0, sizeof(struct migr_record)); | |
7508 | } | |
7509 | if (tofree) | |
7510 | *space_list = tofree; | |
7511 | ret_val = 1; | |
7512 | ||
7513 | update_reshape_exit: | |
7514 | ||
7515 | return ret_val; | |
7516 | } | |
7517 | ||
7518 | static int apply_takeover_update(struct imsm_update_takeover *u, | |
7519 | struct intel_super *super, | |
7520 | void ***space_list) | |
7521 | { | |
7522 | struct imsm_dev *dev = NULL; | |
7523 | struct intel_dev *dv; | |
7524 | struct imsm_dev *dev_new; | |
7525 | struct imsm_map *map; | |
7526 | struct dl *dm, *du; | |
7527 | int i; | |
7528 | ||
7529 | for (dv = super->devlist; dv; dv = dv->next) | |
7530 | if (dv->index == (unsigned int)u->subarray) { | |
7531 | dev = dv->dev; | |
7532 | break; | |
7533 | } | |
7534 | ||
7535 | if (dev == NULL) | |
7536 | return 0; | |
7537 | ||
7538 | map = get_imsm_map(dev, MAP_0); | |
7539 | ||
7540 | if (u->direction == R10_TO_R0) { | |
7541 | /* Number of failed disks must be half of initial disk number */ | |
7542 | if (imsm_count_failed(super, dev, MAP_0) != | |
7543 | (map->num_members / 2)) | |
7544 | return 0; | |
7545 | ||
7546 | /* iterate through devices to mark removed disks as spare */ | |
7547 | for (dm = super->disks; dm; dm = dm->next) { | |
7548 | if (dm->disk.status & FAILED_DISK) { | |
7549 | int idx = dm->index; | |
7550 | /* update indexes on the disk list */ | |
7551 | /* FIXME this loop-with-the-loop looks wrong, I'm not convinced | |
7552 | the index values will end up being correct.... NB */ | |
7553 | for (du = super->disks; du; du = du->next) | |
7554 | if (du->index > idx) | |
7555 | du->index--; | |
7556 | /* mark as spare disk */ | |
7557 | mark_spare(dm); | |
7558 | } | |
7559 | } | |
7560 | /* update map */ | |
7561 | map->num_members = map->num_members / 2; | |
7562 | map->map_state = IMSM_T_STATE_NORMAL; | |
7563 | map->num_domains = 1; | |
7564 | map->raid_level = 0; | |
7565 | map->failed_disk_num = -1; | |
7566 | } | |
7567 | ||
7568 | if (u->direction == R0_TO_R10) { | |
7569 | void **space; | |
7570 | /* update slots in current disk list */ | |
7571 | for (dm = super->disks; dm; dm = dm->next) { | |
7572 | if (dm->index >= 0) | |
7573 | dm->index *= 2; | |
7574 | } | |
7575 | /* create new *missing* disks */ | |
7576 | for (i = 0; i < map->num_members; i++) { | |
7577 | space = *space_list; | |
7578 | if (!space) | |
7579 | continue; | |
7580 | *space_list = *space; | |
7581 | du = (void *)space; | |
7582 | memcpy(du, super->disks, sizeof(*du)); | |
7583 | du->fd = -1; | |
7584 | du->minor = 0; | |
7585 | du->major = 0; | |
7586 | du->index = (i * 2) + 1; | |
7587 | sprintf((char *)du->disk.serial, | |
7588 | " MISSING_%d", du->index); | |
7589 | sprintf((char *)du->serial, | |
7590 | "MISSING_%d", du->index); | |
7591 | du->next = super->missing; | |
7592 | super->missing = du; | |
7593 | } | |
7594 | /* create new dev and map */ | |
7595 | space = *space_list; | |
7596 | if (!space) | |
7597 | return 0; | |
7598 | *space_list = *space; | |
7599 | dev_new = (void *)space; | |
7600 | memcpy(dev_new, dev, sizeof(*dev)); | |
7601 | /* update new map */ | |
7602 | map = get_imsm_map(dev_new, MAP_0); | |
7603 | map->num_members = map->num_members * 2; | |
7604 | map->map_state = IMSM_T_STATE_DEGRADED; | |
7605 | map->num_domains = 2; | |
7606 | map->raid_level = 1; | |
7607 | /* replace dev<->dev_new */ | |
7608 | dv->dev = dev_new; | |
7609 | } | |
7610 | /* update disk order table */ | |
7611 | for (du = super->disks; du; du = du->next) | |
7612 | if (du->index >= 0) | |
7613 | set_imsm_ord_tbl_ent(map, du->index, du->index); | |
7614 | for (du = super->missing; du; du = du->next) | |
7615 | if (du->index >= 0) { | |
7616 | set_imsm_ord_tbl_ent(map, du->index, du->index); | |
7617 | mark_missing(dv->dev, &du->disk, du->index); | |
7618 | } | |
7619 | ||
7620 | return 1; | |
7621 | } | |
7622 | ||
7623 | static void imsm_process_update(struct supertype *st, | |
7624 | struct metadata_update *update) | |
7625 | { | |
7626 | /** | |
7627 | * crack open the metadata_update envelope to find the update record | |
7628 | * update can be one of: | |
7629 | * update_reshape_container_disks - all the arrays in the container | |
7630 | * are being reshaped to have more devices. We need to mark | |
7631 | * the arrays for general migration and convert selected spares | |
7632 | * into active devices. | |
7633 | * update_activate_spare - a spare device has replaced a failed | |
7634 | * device in an array, update the disk_ord_tbl. If this disk is | |
7635 | * present in all member arrays then also clear the SPARE_DISK | |
7636 | * flag | |
7637 | * update_create_array | |
7638 | * update_kill_array | |
7639 | * update_rename_array | |
7640 | * update_add_remove_disk | |
7641 | */ | |
7642 | struct intel_super *super = st->sb; | |
7643 | struct imsm_super *mpb; | |
7644 | enum imsm_update_type type = *(enum imsm_update_type *) update->buf; | |
7645 | ||
7646 | /* update requires a larger buf but the allocation failed */ | |
7647 | if (super->next_len && !super->next_buf) { | |
7648 | super->next_len = 0; | |
7649 | return; | |
7650 | } | |
7651 | ||
7652 | if (super->next_buf) { | |
7653 | memcpy(super->next_buf, super->buf, super->len); | |
7654 | free(super->buf); | |
7655 | super->len = super->next_len; | |
7656 | super->buf = super->next_buf; | |
7657 | ||
7658 | super->next_len = 0; | |
7659 | super->next_buf = NULL; | |
7660 | } | |
7661 | ||
7662 | mpb = super->anchor; | |
7663 | ||
7664 | switch (type) { | |
7665 | case update_general_migration_checkpoint: { | |
7666 | struct intel_dev *id; | |
7667 | struct imsm_update_general_migration_checkpoint *u = | |
7668 | (void *)update->buf; | |
7669 | ||
7670 | dprintf("imsm: process_update() " | |
7671 | "for update_general_migration_checkpoint called\n"); | |
7672 | ||
7673 | /* find device under general migration */ | |
7674 | for (id = super->devlist ; id; id = id->next) { | |
7675 | if (is_gen_migration(id->dev)) { | |
7676 | id->dev->vol.curr_migr_unit = | |
7677 | __cpu_to_le32(u->curr_migr_unit); | |
7678 | super->updates_pending++; | |
7679 | } | |
7680 | } | |
7681 | break; | |
7682 | } | |
7683 | case update_takeover: { | |
7684 | struct imsm_update_takeover *u = (void *)update->buf; | |
7685 | if (apply_takeover_update(u, super, &update->space_list)) { | |
7686 | imsm_update_version_info(super); | |
7687 | super->updates_pending++; | |
7688 | } | |
7689 | break; | |
7690 | } | |
7691 | ||
7692 | case update_reshape_container_disks: { | |
7693 | struct imsm_update_reshape *u = (void *)update->buf; | |
7694 | if (apply_reshape_container_disks_update( | |
7695 | u, super, &update->space_list)) | |
7696 | super->updates_pending++; | |
7697 | break; | |
7698 | } | |
7699 | case update_reshape_migration: { | |
7700 | struct imsm_update_reshape_migration *u = (void *)update->buf; | |
7701 | if (apply_reshape_migration_update( | |
7702 | u, super, &update->space_list)) | |
7703 | super->updates_pending++; | |
7704 | break; | |
7705 | } | |
7706 | case update_activate_spare: { | |
7707 | struct imsm_update_activate_spare *u = (void *) update->buf; | |
7708 | if (apply_update_activate_spare(u, super, st->arrays)) | |
7709 | super->updates_pending++; | |
7710 | break; | |
7711 | } | |
7712 | case update_create_array: { | |
7713 | /* someone wants to create a new array, we need to be aware of | |
7714 | * a few races/collisions: | |
7715 | * 1/ 'Create' called by two separate instances of mdadm | |
7716 | * 2/ 'Create' versus 'activate_spare': mdadm has chosen | |
7717 | * devices that have since been assimilated via | |
7718 | * activate_spare. | |
7719 | * In the event this update can not be carried out mdadm will | |
7720 | * (FIX ME) notice that its update did not take hold. | |
7721 | */ | |
7722 | struct imsm_update_create_array *u = (void *) update->buf; | |
7723 | struct intel_dev *dv; | |
7724 | struct imsm_dev *dev; | |
7725 | struct imsm_map *map, *new_map; | |
7726 | unsigned long long start, end; | |
7727 | unsigned long long new_start, new_end; | |
7728 | int i; | |
7729 | struct disk_info *inf; | |
7730 | struct dl *dl; | |
7731 | ||
7732 | /* handle racing creates: first come first serve */ | |
7733 | if (u->dev_idx < mpb->num_raid_devs) { | |
7734 | dprintf("%s: subarray %d already defined\n", | |
7735 | __func__, u->dev_idx); | |
7736 | goto create_error; | |
7737 | } | |
7738 | ||
7739 | /* check update is next in sequence */ | |
7740 | if (u->dev_idx != mpb->num_raid_devs) { | |
7741 | dprintf("%s: can not create array %d expected index %d\n", | |
7742 | __func__, u->dev_idx, mpb->num_raid_devs); | |
7743 | goto create_error; | |
7744 | } | |
7745 | ||
7746 | new_map = get_imsm_map(&u->dev, MAP_0); | |
7747 | new_start = __le32_to_cpu(new_map->pba_of_lba0); | |
7748 | new_end = new_start + __le32_to_cpu(new_map->blocks_per_member); | |
7749 | inf = get_disk_info(u); | |
7750 | ||
7751 | /* handle activate_spare versus create race: | |
7752 | * check to make sure that overlapping arrays do not include | |
7753 | * overalpping disks | |
7754 | */ | |
7755 | for (i = 0; i < mpb->num_raid_devs; i++) { | |
7756 | dev = get_imsm_dev(super, i); | |
7757 | map = get_imsm_map(dev, MAP_0); | |
7758 | start = __le32_to_cpu(map->pba_of_lba0); | |
7759 | end = start + __le32_to_cpu(map->blocks_per_member); | |
7760 | if ((new_start >= start && new_start <= end) || | |
7761 | (start >= new_start && start <= new_end)) | |
7762 | /* overlap */; | |
7763 | else | |
7764 | continue; | |
7765 | ||
7766 | if (disks_overlap(super, i, u)) { | |
7767 | dprintf("%s: arrays overlap\n", __func__); | |
7768 | goto create_error; | |
7769 | } | |
7770 | } | |
7771 | ||
7772 | /* check that prepare update was successful */ | |
7773 | if (!update->space) { | |
7774 | dprintf("%s: prepare update failed\n", __func__); | |
7775 | goto create_error; | |
7776 | } | |
7777 | ||
7778 | /* check that all disks are still active before committing | |
7779 | * changes. FIXME: could we instead handle this by creating a | |
7780 | * degraded array? That's probably not what the user expects, | |
7781 | * so better to drop this update on the floor. | |
7782 | */ | |
7783 | for (i = 0; i < new_map->num_members; i++) { | |
7784 | dl = serial_to_dl(inf[i].serial, super); | |
7785 | if (!dl) { | |
7786 | dprintf("%s: disk disappeared\n", __func__); | |
7787 | goto create_error; | |
7788 | } | |
7789 | } | |
7790 | ||
7791 | super->updates_pending++; | |
7792 | ||
7793 | /* convert spares to members and fixup ord_tbl */ | |
7794 | for (i = 0; i < new_map->num_members; i++) { | |
7795 | dl = serial_to_dl(inf[i].serial, super); | |
7796 | if (dl->index == -1) { | |
7797 | dl->index = mpb->num_disks; | |
7798 | mpb->num_disks++; | |
7799 | dl->disk.status |= CONFIGURED_DISK; | |
7800 | dl->disk.status &= ~SPARE_DISK; | |
7801 | } | |
7802 | set_imsm_ord_tbl_ent(new_map, i, dl->index); | |
7803 | } | |
7804 | ||
7805 | dv = update->space; | |
7806 | dev = dv->dev; | |
7807 | update->space = NULL; | |
7808 | imsm_copy_dev(dev, &u->dev); | |
7809 | dv->index = u->dev_idx; | |
7810 | dv->next = super->devlist; | |
7811 | super->devlist = dv; | |
7812 | mpb->num_raid_devs++; | |
7813 | ||
7814 | imsm_update_version_info(super); | |
7815 | break; | |
7816 | create_error: | |
7817 | /* mdmon knows how to release update->space, but not | |
7818 | * ((struct intel_dev *) update->space)->dev | |
7819 | */ | |
7820 | if (update->space) { | |
7821 | dv = update->space; | |
7822 | free(dv->dev); | |
7823 | } | |
7824 | break; | |
7825 | } | |
7826 | case update_kill_array: { | |
7827 | struct imsm_update_kill_array *u = (void *) update->buf; | |
7828 | int victim = u->dev_idx; | |
7829 | struct active_array *a; | |
7830 | struct intel_dev **dp; | |
7831 | struct imsm_dev *dev; | |
7832 | ||
7833 | /* sanity check that we are not affecting the uuid of | |
7834 | * active arrays, or deleting an active array | |
7835 | * | |
7836 | * FIXME when immutable ids are available, but note that | |
7837 | * we'll also need to fixup the invalidated/active | |
7838 | * subarray indexes in mdstat | |
7839 | */ | |
7840 | for (a = st->arrays; a; a = a->next) | |
7841 | if (a->info.container_member >= victim) | |
7842 | break; | |
7843 | /* by definition if mdmon is running at least one array | |
7844 | * is active in the container, so checking | |
7845 | * mpb->num_raid_devs is just extra paranoia | |
7846 | */ | |
7847 | dev = get_imsm_dev(super, victim); | |
7848 | if (a || !dev || mpb->num_raid_devs == 1) { | |
7849 | dprintf("failed to delete subarray-%d\n", victim); | |
7850 | break; | |
7851 | } | |
7852 | ||
7853 | for (dp = &super->devlist; *dp;) | |
7854 | if ((*dp)->index == (unsigned)super->current_vol) { | |
7855 | *dp = (*dp)->next; | |
7856 | } else { | |
7857 | if ((*dp)->index > (unsigned)victim) | |
7858 | (*dp)->index--; | |
7859 | dp = &(*dp)->next; | |
7860 | } | |
7861 | mpb->num_raid_devs--; | |
7862 | super->updates_pending++; | |
7863 | break; | |
7864 | } | |
7865 | case update_rename_array: { | |
7866 | struct imsm_update_rename_array *u = (void *) update->buf; | |
7867 | char name[MAX_RAID_SERIAL_LEN+1]; | |
7868 | int target = u->dev_idx; | |
7869 | struct active_array *a; | |
7870 | struct imsm_dev *dev; | |
7871 | ||
7872 | /* sanity check that we are not affecting the uuid of | |
7873 | * an active array | |
7874 | */ | |
7875 | snprintf(name, MAX_RAID_SERIAL_LEN, "%s", (char *) u->name); | |
7876 | name[MAX_RAID_SERIAL_LEN] = '\0'; | |
7877 | for (a = st->arrays; a; a = a->next) | |
7878 | if (a->info.container_member == target) | |
7879 | break; | |
7880 | dev = get_imsm_dev(super, u->dev_idx); | |
7881 | if (a || !dev || !check_name(super, name, 1)) { | |
7882 | dprintf("failed to rename subarray-%d\n", target); | |
7883 | break; | |
7884 | } | |
7885 | ||
7886 | snprintf((char *) dev->volume, MAX_RAID_SERIAL_LEN, "%s", name); | |
7887 | super->updates_pending++; | |
7888 | break; | |
7889 | } | |
7890 | case update_add_remove_disk: { | |
7891 | /* we may be able to repair some arrays if disks are | |
7892 | * being added, check teh status of add_remove_disk | |
7893 | * if discs has been added. | |
7894 | */ | |
7895 | if (add_remove_disk_update(super)) { | |
7896 | struct active_array *a; | |
7897 | ||
7898 | super->updates_pending++; | |
7899 | for (a = st->arrays; a; a = a->next) | |
7900 | a->check_degraded = 1; | |
7901 | } | |
7902 | break; | |
7903 | } | |
7904 | default: | |
7905 | fprintf(stderr, "error: unsuported process update type:" | |
7906 | "(type: %d)\n", type); | |
7907 | } | |
7908 | } | |
7909 | ||
7910 | static struct mdinfo *get_spares_for_grow(struct supertype *st); | |
7911 | ||
7912 | static void imsm_prepare_update(struct supertype *st, | |
7913 | struct metadata_update *update) | |
7914 | { | |
7915 | /** | |
7916 | * Allocate space to hold new disk entries, raid-device entries or a new | |
7917 | * mpb if necessary. The manager synchronously waits for updates to | |
7918 | * complete in the monitor, so new mpb buffers allocated here can be | |
7919 | * integrated by the monitor thread without worrying about live pointers | |
7920 | * in the manager thread. | |
7921 | */ | |
7922 | enum imsm_update_type type = *(enum imsm_update_type *) update->buf; | |
7923 | struct intel_super *super = st->sb; | |
7924 | struct imsm_super *mpb = super->anchor; | |
7925 | size_t buf_len; | |
7926 | size_t len = 0; | |
7927 | ||
7928 | switch (type) { | |
7929 | case update_general_migration_checkpoint: | |
7930 | dprintf("imsm: prepare_update() " | |
7931 | "for update_general_migration_checkpoint called\n"); | |
7932 | break; | |
7933 | case update_takeover: { | |
7934 | struct imsm_update_takeover *u = (void *)update->buf; | |
7935 | if (u->direction == R0_TO_R10) { | |
7936 | void **tail = (void **)&update->space_list; | |
7937 | struct imsm_dev *dev = get_imsm_dev(super, u->subarray); | |
7938 | struct imsm_map *map = get_imsm_map(dev, MAP_0); | |
7939 | int num_members = map->num_members; | |
7940 | void *space; | |
7941 | int size, i; | |
7942 | int err = 0; | |
7943 | /* allocate memory for added disks */ | |
7944 | for (i = 0; i < num_members; i++) { | |
7945 | size = sizeof(struct dl); | |
7946 | space = malloc(size); | |
7947 | if (!space) { | |
7948 | err++; | |
7949 | break; | |
7950 | } | |
7951 | *tail = space; | |
7952 | tail = space; | |
7953 | *tail = NULL; | |
7954 | } | |
7955 | /* allocate memory for new device */ | |
7956 | size = sizeof_imsm_dev(super->devlist->dev, 0) + | |
7957 | (num_members * sizeof(__u32)); | |
7958 | space = malloc(size); | |
7959 | if (!space) | |
7960 | err++; | |
7961 | else { | |
7962 | *tail = space; | |
7963 | tail = space; | |
7964 | *tail = NULL; | |
7965 | } | |
7966 | if (!err) { | |
7967 | len = disks_to_mpb_size(num_members * 2); | |
7968 | } else { | |
7969 | /* if allocation didn't success, free buffer */ | |
7970 | while (update->space_list) { | |
7971 | void **sp = update->space_list; | |
7972 | update->space_list = *sp; | |
7973 | free(sp); | |
7974 | } | |
7975 | } | |
7976 | } | |
7977 | ||
7978 | break; | |
7979 | } | |
7980 | case update_reshape_container_disks: { | |
7981 | /* Every raid device in the container is about to | |
7982 | * gain some more devices, and we will enter a | |
7983 | * reconfiguration. | |
7984 | * So each 'imsm_map' will be bigger, and the imsm_vol | |
7985 | * will now hold 2 of them. | |
7986 | * Thus we need new 'struct imsm_dev' allocations sized | |
7987 | * as sizeof_imsm_dev but with more devices in both maps. | |
7988 | */ | |
7989 | struct imsm_update_reshape *u = (void *)update->buf; | |
7990 | struct intel_dev *dl; | |
7991 | void **space_tail = (void**)&update->space_list; | |
7992 | ||
7993 | dprintf("imsm: imsm_prepare_update() for update_reshape\n"); | |
7994 | ||
7995 | for (dl = super->devlist; dl; dl = dl->next) { | |
7996 | int size = sizeof_imsm_dev(dl->dev, 1); | |
7997 | void *s; | |
7998 | if (u->new_raid_disks > u->old_raid_disks) | |
7999 | size += sizeof(__u32)*2* | |
8000 | (u->new_raid_disks - u->old_raid_disks); | |
8001 | s = malloc(size); | |
8002 | if (!s) | |
8003 | break; | |
8004 | *space_tail = s; | |
8005 | space_tail = s; | |
8006 | *space_tail = NULL; | |
8007 | } | |
8008 | ||
8009 | len = disks_to_mpb_size(u->new_raid_disks); | |
8010 | dprintf("New anchor length is %llu\n", (unsigned long long)len); | |
8011 | break; | |
8012 | } | |
8013 | case update_reshape_migration: { | |
8014 | /* for migration level 0->5 we need to add disks | |
8015 | * so the same as for container operation we will copy | |
8016 | * device to the bigger location. | |
8017 | * in memory prepared device and new disk area are prepared | |
8018 | * for usage in process update | |
8019 | */ | |
8020 | struct imsm_update_reshape_migration *u = (void *)update->buf; | |
8021 | struct intel_dev *id; | |
8022 | void **space_tail = (void **)&update->space_list; | |
8023 | int size; | |
8024 | void *s; | |
8025 | int current_level = -1; | |
8026 | ||
8027 | dprintf("imsm: imsm_prepare_update() for update_reshape\n"); | |
8028 | ||
8029 | /* add space for bigger array in update | |
8030 | */ | |
8031 | for (id = super->devlist; id; id = id->next) { | |
8032 | if (id->index == (unsigned)u->subdev) { | |
8033 | size = sizeof_imsm_dev(id->dev, 1); | |
8034 | if (u->new_raid_disks > u->old_raid_disks) | |
8035 | size += sizeof(__u32)*2* | |
8036 | (u->new_raid_disks - u->old_raid_disks); | |
8037 | s = malloc(size); | |
8038 | if (!s) | |
8039 | break; | |
8040 | *space_tail = s; | |
8041 | space_tail = s; | |
8042 | *space_tail = NULL; | |
8043 | break; | |
8044 | } | |
8045 | } | |
8046 | if (update->space_list == NULL) | |
8047 | break; | |
8048 | ||
8049 | /* add space for disk in update | |
8050 | */ | |
8051 | size = sizeof(struct dl); | |
8052 | s = malloc(size); | |
8053 | if (!s) { | |
8054 | free(update->space_list); | |
8055 | update->space_list = NULL; | |
8056 | break; | |
8057 | } | |
8058 | *space_tail = s; | |
8059 | space_tail = s; | |
8060 | *space_tail = NULL; | |
8061 | ||
8062 | /* add spare device to update | |
8063 | */ | |
8064 | for (id = super->devlist ; id; id = id->next) | |
8065 | if (id->index == (unsigned)u->subdev) { | |
8066 | struct imsm_dev *dev; | |
8067 | struct imsm_map *map; | |
8068 | ||
8069 | dev = get_imsm_dev(super, u->subdev); | |
8070 | map = get_imsm_map(dev, MAP_0); | |
8071 | current_level = map->raid_level; | |
8072 | break; | |
8073 | } | |
8074 | if ((u->new_level == 5) && (u->new_level != current_level)) { | |
8075 | struct mdinfo *spares; | |
8076 | ||
8077 | spares = get_spares_for_grow(st); | |
8078 | if (spares) { | |
8079 | struct dl *dl; | |
8080 | struct mdinfo *dev; | |
8081 | ||
8082 | dev = spares->devs; | |
8083 | if (dev) { | |
8084 | u->new_disks[0] = | |
8085 | makedev(dev->disk.major, | |
8086 | dev->disk.minor); | |
8087 | dl = get_disk_super(super, | |
8088 | dev->disk.major, | |
8089 | dev->disk.minor); | |
8090 | dl->index = u->old_raid_disks; | |
8091 | dev = dev->next; | |
8092 | } | |
8093 | sysfs_free(spares); | |
8094 | } | |
8095 | } | |
8096 | len = disks_to_mpb_size(u->new_raid_disks); | |
8097 | dprintf("New anchor length is %llu\n", (unsigned long long)len); | |
8098 | break; | |
8099 | } | |
8100 | case update_create_array: { | |
8101 | struct imsm_update_create_array *u = (void *) update->buf; | |
8102 | struct intel_dev *dv; | |
8103 | struct imsm_dev *dev = &u->dev; | |
8104 | struct imsm_map *map = get_imsm_map(dev, MAP_0); | |
8105 | struct dl *dl; | |
8106 | struct disk_info *inf; | |
8107 | int i; | |
8108 | int activate = 0; | |
8109 | ||
8110 | inf = get_disk_info(u); | |
8111 | len = sizeof_imsm_dev(dev, 1); | |
8112 | /* allocate a new super->devlist entry */ | |
8113 | dv = malloc(sizeof(*dv)); | |
8114 | if (dv) { | |
8115 | dv->dev = malloc(len); | |
8116 | if (dv->dev) | |
8117 | update->space = dv; | |
8118 | else { | |
8119 | free(dv); | |
8120 | update->space = NULL; | |
8121 | } | |
8122 | } | |
8123 | ||
8124 | /* count how many spares will be converted to members */ | |
8125 | for (i = 0; i < map->num_members; i++) { | |
8126 | dl = serial_to_dl(inf[i].serial, super); | |
8127 | if (!dl) { | |
8128 | /* hmm maybe it failed?, nothing we can do about | |
8129 | * it here | |
8130 | */ | |
8131 | continue; | |
8132 | } | |
8133 | if (count_memberships(dl, super) == 0) | |
8134 | activate++; | |
8135 | } | |
8136 | len += activate * sizeof(struct imsm_disk); | |
8137 | break; | |
8138 | default: | |
8139 | break; | |
8140 | } | |
8141 | } | |
8142 | ||
8143 | /* check if we need a larger metadata buffer */ | |
8144 | if (super->next_buf) | |
8145 | buf_len = super->next_len; | |
8146 | else | |
8147 | buf_len = super->len; | |
8148 | ||
8149 | if (__le32_to_cpu(mpb->mpb_size) + len > buf_len) { | |
8150 | /* ok we need a larger buf than what is currently allocated | |
8151 | * if this allocation fails process_update will notice that | |
8152 | * ->next_len is set and ->next_buf is NULL | |
8153 | */ | |
8154 | buf_len = ROUND_UP(__le32_to_cpu(mpb->mpb_size) + len, 512); | |
8155 | if (super->next_buf) | |
8156 | free(super->next_buf); | |
8157 | ||
8158 | super->next_len = buf_len; | |
8159 | if (posix_memalign(&super->next_buf, 512, buf_len) == 0) | |
8160 | memset(super->next_buf, 0, buf_len); | |
8161 | else | |
8162 | super->next_buf = NULL; | |
8163 | } | |
8164 | } | |
8165 | ||
8166 | /* must be called while manager is quiesced */ | |
8167 | static void imsm_delete(struct intel_super *super, struct dl **dlp, unsigned index) | |
8168 | { | |
8169 | struct imsm_super *mpb = super->anchor; | |
8170 | struct dl *iter; | |
8171 | struct imsm_dev *dev; | |
8172 | struct imsm_map *map; | |
8173 | int i, j, num_members; | |
8174 | __u32 ord; | |
8175 | ||
8176 | dprintf("%s: deleting device[%d] from imsm_super\n", | |
8177 | __func__, index); | |
8178 | ||
8179 | /* shift all indexes down one */ | |
8180 | for (iter = super->disks; iter; iter = iter->next) | |
8181 | if (iter->index > (int)index) | |
8182 | iter->index--; | |
8183 | for (iter = super->missing; iter; iter = iter->next) | |
8184 | if (iter->index > (int)index) | |
8185 | iter->index--; | |
8186 | ||
8187 | for (i = 0; i < mpb->num_raid_devs; i++) { | |
8188 | dev = get_imsm_dev(super, i); | |
8189 | map = get_imsm_map(dev, MAP_0); | |
8190 | num_members = map->num_members; | |
8191 | for (j = 0; j < num_members; j++) { | |
8192 | /* update ord entries being careful not to propagate | |
8193 | * ord-flags to the first map | |
8194 | */ | |
8195 | ord = get_imsm_ord_tbl_ent(dev, j, MAP_X); | |
8196 | ||
8197 | if (ord_to_idx(ord) <= index) | |
8198 | continue; | |
8199 | ||
8200 | map = get_imsm_map(dev, MAP_0); | |
8201 | set_imsm_ord_tbl_ent(map, j, ord_to_idx(ord - 1)); | |
8202 | map = get_imsm_map(dev, MAP_1); | |
8203 | if (map) | |
8204 | set_imsm_ord_tbl_ent(map, j, ord - 1); | |
8205 | } | |
8206 | } | |
8207 | ||
8208 | mpb->num_disks--; | |
8209 | super->updates_pending++; | |
8210 | if (*dlp) { | |
8211 | struct dl *dl = *dlp; | |
8212 | ||
8213 | *dlp = (*dlp)->next; | |
8214 | __free_imsm_disk(dl); | |
8215 | } | |
8216 | } | |
8217 | #endif /* MDASSEMBLE */ | |
8218 | ||
8219 | static void close_targets(int *targets, int new_disks) | |
8220 | { | |
8221 | int i; | |
8222 | ||
8223 | if (!targets) | |
8224 | return; | |
8225 | ||
8226 | for (i = 0; i < new_disks; i++) { | |
8227 | if (targets[i] >= 0) { | |
8228 | close(targets[i]); | |
8229 | targets[i] = -1; | |
8230 | } | |
8231 | } | |
8232 | } | |
8233 | ||
8234 | static int imsm_get_allowed_degradation(int level, int raid_disks, | |
8235 | struct intel_super *super, | |
8236 | struct imsm_dev *dev) | |
8237 | { | |
8238 | switch (level) { | |
8239 | case 10:{ | |
8240 | int ret_val = 0; | |
8241 | struct imsm_map *map; | |
8242 | int i; | |
8243 | ||
8244 | ret_val = raid_disks/2; | |
8245 | /* check map if all disks pairs not failed | |
8246 | * in both maps | |
8247 | */ | |
8248 | map = get_imsm_map(dev, MAP_0); | |
8249 | for (i = 0; i < ret_val; i++) { | |
8250 | int degradation = 0; | |
8251 | if (get_imsm_disk(super, i) == NULL) | |
8252 | degradation++; | |
8253 | if (get_imsm_disk(super, i + 1) == NULL) | |
8254 | degradation++; | |
8255 | if (degradation == 2) | |
8256 | return 0; | |
8257 | } | |
8258 | map = get_imsm_map(dev, MAP_1); | |
8259 | /* if there is no second map | |
8260 | * result can be returned | |
8261 | */ | |
8262 | if (map == NULL) | |
8263 | return ret_val; | |
8264 | /* check degradation in second map | |
8265 | */ | |
8266 | for (i = 0; i < ret_val; i++) { | |
8267 | int degradation = 0; | |
8268 | if (get_imsm_disk(super, i) == NULL) | |
8269 | degradation++; | |
8270 | if (get_imsm_disk(super, i + 1) == NULL) | |
8271 | degradation++; | |
8272 | if (degradation == 2) | |
8273 | return 0; | |
8274 | } | |
8275 | return ret_val; | |
8276 | } | |
8277 | case 5: | |
8278 | return 1; | |
8279 | case 6: | |
8280 | return 2; | |
8281 | default: | |
8282 | return 0; | |
8283 | } | |
8284 | } | |
8285 | ||
8286 | ||
8287 | /******************************************************************************* | |
8288 | * Function: open_backup_targets | |
8289 | * Description: Function opens file descriptors for all devices given in | |
8290 | * info->devs | |
8291 | * Parameters: | |
8292 | * info : general array info | |
8293 | * raid_disks : number of disks | |
8294 | * raid_fds : table of device's file descriptors | |
8295 | * super : intel super for raid10 degradation check | |
8296 | * dev : intel device for raid10 degradation check | |
8297 | * Returns: | |
8298 | * 0 : success | |
8299 | * -1 : fail | |
8300 | ******************************************************************************/ | |
8301 | int open_backup_targets(struct mdinfo *info, int raid_disks, int *raid_fds, | |
8302 | struct intel_super *super, struct imsm_dev *dev) | |
8303 | { | |
8304 | struct mdinfo *sd; | |
8305 | int i; | |
8306 | int opened = 0; | |
8307 | ||
8308 | for (i = 0; i < raid_disks; i++) | |
8309 | raid_fds[i] = -1; | |
8310 | ||
8311 | for (sd = info->devs ; sd ; sd = sd->next) { | |
8312 | char *dn; | |
8313 | ||
8314 | if (sd->disk.state & (1<<MD_DISK_FAULTY)) { | |
8315 | dprintf("disk is faulty!!\n"); | |
8316 | continue; | |
8317 | } | |
8318 | ||
8319 | if ((sd->disk.raid_disk >= raid_disks) || | |
8320 | (sd->disk.raid_disk < 0)) | |
8321 | continue; | |
8322 | ||
8323 | dn = map_dev(sd->disk.major, | |
8324 | sd->disk.minor, 1); | |
8325 | raid_fds[sd->disk.raid_disk] = dev_open(dn, O_RDWR); | |
8326 | if (raid_fds[sd->disk.raid_disk] < 0) { | |
8327 | fprintf(stderr, "cannot open component\n"); | |
8328 | continue; | |
8329 | } | |
8330 | opened++; | |
8331 | } | |
8332 | /* check if maximum array degradation level is not exceeded | |
8333 | */ | |
8334 | if ((raid_disks - opened) > | |
8335 | imsm_get_allowed_degradation(info->new_level, | |
8336 | raid_disks, | |
8337 | super, dev)) { | |
8338 | fprintf(stderr, "Not enough disks can be opened.\n"); | |
8339 | close_targets(raid_fds, raid_disks); | |
8340 | return -2; | |
8341 | } | |
8342 | return 0; | |
8343 | } | |
8344 | ||
8345 | #ifndef MDASSEMBLE | |
8346 | /******************************************************************************* | |
8347 | * Function: init_migr_record_imsm | |
8348 | * Description: Function inits imsm migration record | |
8349 | * Parameters: | |
8350 | * super : imsm internal array info | |
8351 | * dev : device under migration | |
8352 | * info : general array info to find the smallest device | |
8353 | * Returns: | |
8354 | * none | |
8355 | ******************************************************************************/ | |
8356 | void init_migr_record_imsm(struct supertype *st, struct imsm_dev *dev, | |
8357 | struct mdinfo *info) | |
8358 | { | |
8359 | struct intel_super *super = st->sb; | |
8360 | struct migr_record *migr_rec = super->migr_rec; | |
8361 | int new_data_disks; | |
8362 | unsigned long long dsize, dev_sectors; | |
8363 | long long unsigned min_dev_sectors = -1LLU; | |
8364 | struct mdinfo *sd; | |
8365 | char nm[30]; | |
8366 | int fd; | |
8367 | struct imsm_map *map_dest = get_imsm_map(dev, MAP_0); | |
8368 | struct imsm_map *map_src = get_imsm_map(dev, MAP_1); | |
8369 | unsigned long long num_migr_units; | |
8370 | unsigned long long array_blocks; | |
8371 | ||
8372 | memset(migr_rec, 0, sizeof(struct migr_record)); | |
8373 | migr_rec->family_num = __cpu_to_le32(super->anchor->family_num); | |
8374 | ||
8375 | /* only ascending reshape supported now */ | |
8376 | migr_rec->ascending_migr = __cpu_to_le32(1); | |
8377 | ||
8378 | migr_rec->dest_depth_per_unit = GEN_MIGR_AREA_SIZE / | |
8379 | max(map_dest->blocks_per_strip, map_src->blocks_per_strip); | |
8380 | migr_rec->dest_depth_per_unit *= map_dest->blocks_per_strip; | |
8381 | new_data_disks = imsm_num_data_members(dev, MAP_0); | |
8382 | migr_rec->blocks_per_unit = | |
8383 | __cpu_to_le32(migr_rec->dest_depth_per_unit * new_data_disks); | |
8384 | migr_rec->dest_depth_per_unit = | |
8385 | __cpu_to_le32(migr_rec->dest_depth_per_unit); | |
8386 | array_blocks = info->component_size * new_data_disks; | |
8387 | num_migr_units = | |
8388 | array_blocks / __le32_to_cpu(migr_rec->blocks_per_unit); | |
8389 | ||
8390 | if (array_blocks % __le32_to_cpu(migr_rec->blocks_per_unit)) | |
8391 | num_migr_units++; | |
8392 | migr_rec->num_migr_units = __cpu_to_le32(num_migr_units); | |
8393 | ||
8394 | migr_rec->post_migr_vol_cap = dev->size_low; | |
8395 | migr_rec->post_migr_vol_cap_hi = dev->size_high; | |
8396 | ||
8397 | ||
8398 | /* Find the smallest dev */ | |
8399 | for (sd = info->devs ; sd ; sd = sd->next) { | |
8400 | sprintf(nm, "%d:%d", sd->disk.major, sd->disk.minor); | |
8401 | fd = dev_open(nm, O_RDONLY); | |
8402 | if (fd < 0) | |
8403 | continue; | |
8404 | get_dev_size(fd, NULL, &dsize); | |
8405 | dev_sectors = dsize / 512; | |
8406 | if (dev_sectors < min_dev_sectors) | |
8407 | min_dev_sectors = dev_sectors; | |
8408 | close(fd); | |
8409 | } | |
8410 | migr_rec->ckpt_area_pba = __cpu_to_le32(min_dev_sectors - | |
8411 | RAID_DISK_RESERVED_BLOCKS_IMSM_HI); | |
8412 | ||
8413 | write_imsm_migr_rec(st); | |
8414 | ||
8415 | return; | |
8416 | } | |
8417 | ||
8418 | /******************************************************************************* | |
8419 | * Function: save_backup_imsm | |
8420 | * Description: Function saves critical data stripes to Migration Copy Area | |
8421 | * and updates the current migration unit status. | |
8422 | * Use restore_stripes() to form a destination stripe, | |
8423 | * and to write it to the Copy Area. | |
8424 | * Parameters: | |
8425 | * st : supertype information | |
8426 | * dev : imsm device that backup is saved for | |
8427 | * info : general array info | |
8428 | * buf : input buffer | |
8429 | * length : length of data to backup (blocks_per_unit) | |
8430 | * Returns: | |
8431 | * 0 : success | |
8432 | *, -1 : fail | |
8433 | ******************************************************************************/ | |
8434 | int save_backup_imsm(struct supertype *st, | |
8435 | struct imsm_dev *dev, | |
8436 | struct mdinfo *info, | |
8437 | void *buf, | |
8438 | int length) | |
8439 | { | |
8440 | int rv = -1; | |
8441 | struct intel_super *super = st->sb; | |
8442 | unsigned long long *target_offsets = NULL; | |
8443 | int *targets = NULL; | |
8444 | int i; | |
8445 | struct imsm_map *map_dest = get_imsm_map(dev, MAP_0); | |
8446 | int new_disks = map_dest->num_members; | |
8447 | int dest_layout = 0; | |
8448 | int dest_chunk; | |
8449 | unsigned long long start; | |
8450 | int data_disks = imsm_num_data_members(dev, MAP_0); | |
8451 | ||
8452 | targets = malloc(new_disks * sizeof(int)); | |
8453 | if (!targets) | |
8454 | goto abort; | |
8455 | ||
8456 | for (i = 0; i < new_disks; i++) | |
8457 | targets[i] = -1; | |
8458 | ||
8459 | target_offsets = malloc(new_disks * sizeof(unsigned long long)); | |
8460 | if (!target_offsets) | |
8461 | goto abort; | |
8462 | ||
8463 | start = info->reshape_progress * 512; | |
8464 | for (i = 0; i < new_disks; i++) { | |
8465 | target_offsets[i] = (unsigned long long) | |
8466 | __le32_to_cpu(super->migr_rec->ckpt_area_pba) * 512; | |
8467 | /* move back copy area adderss, it will be moved forward | |
8468 | * in restore_stripes() using start input variable | |
8469 | */ | |
8470 | target_offsets[i] -= start/data_disks; | |
8471 | } | |
8472 | ||
8473 | if (open_backup_targets(info, new_disks, targets, | |
8474 | super, dev)) | |
8475 | goto abort; | |
8476 | ||
8477 | dest_layout = imsm_level_to_layout(map_dest->raid_level); | |
8478 | dest_chunk = __le16_to_cpu(map_dest->blocks_per_strip) * 512; | |
8479 | ||
8480 | if (restore_stripes(targets, /* list of dest devices */ | |
8481 | target_offsets, /* migration record offsets */ | |
8482 | new_disks, | |
8483 | dest_chunk, | |
8484 | map_dest->raid_level, | |
8485 | dest_layout, | |
8486 | -1, /* source backup file descriptor */ | |
8487 | 0, /* input buf offset | |
8488 | * always 0 buf is already offseted */ | |
8489 | start, | |
8490 | length, | |
8491 | buf) != 0) { | |
8492 | fprintf(stderr, Name ": Error restoring stripes\n"); | |
8493 | goto abort; | |
8494 | } | |
8495 | ||
8496 | rv = 0; | |
8497 | ||
8498 | abort: | |
8499 | if (targets) { | |
8500 | close_targets(targets, new_disks); | |
8501 | free(targets); | |
8502 | } | |
8503 | free(target_offsets); | |
8504 | ||
8505 | return rv; | |
8506 | } | |
8507 | ||
8508 | /******************************************************************************* | |
8509 | * Function: save_checkpoint_imsm | |
8510 | * Description: Function called for current unit status update | |
8511 | * in the migration record. It writes it to disk. | |
8512 | * Parameters: | |
8513 | * super : imsm internal array info | |
8514 | * info : general array info | |
8515 | * Returns: | |
8516 | * 0: success | |
8517 | * 1: failure | |
8518 | * 2: failure, means no valid migration record | |
8519 | * / no general migration in progress / | |
8520 | ******************************************************************************/ | |
8521 | int save_checkpoint_imsm(struct supertype *st, struct mdinfo *info, int state) | |
8522 | { | |
8523 | struct intel_super *super = st->sb; | |
8524 | unsigned long long blocks_per_unit; | |
8525 | unsigned long long curr_migr_unit; | |
8526 | ||
8527 | if (load_imsm_migr_rec(super, info) != 0) { | |
8528 | dprintf("imsm: ERROR: Cannot read migration record " | |
8529 | "for checkpoint save.\n"); | |
8530 | return 1; | |
8531 | } | |
8532 | ||
8533 | blocks_per_unit = __le32_to_cpu(super->migr_rec->blocks_per_unit); | |
8534 | if (blocks_per_unit == 0) { | |
8535 | dprintf("imsm: no migration in progress.\n"); | |
8536 | return 2; | |
8537 | } | |
8538 | curr_migr_unit = info->reshape_progress / blocks_per_unit; | |
8539 | /* check if array is alligned to copy area | |
8540 | * if it is not alligned, add one to current migration unit value | |
8541 | * this can happend on array reshape finish only | |
8542 | */ | |
8543 | if (info->reshape_progress % blocks_per_unit) | |
8544 | curr_migr_unit++; | |
8545 | ||
8546 | super->migr_rec->curr_migr_unit = | |
8547 | __cpu_to_le32(curr_migr_unit); | |
8548 | super->migr_rec->rec_status = __cpu_to_le32(state); | |
8549 | super->migr_rec->dest_1st_member_lba = | |
8550 | __cpu_to_le32(curr_migr_unit * | |
8551 | __le32_to_cpu(super->migr_rec->dest_depth_per_unit)); | |
8552 | if (write_imsm_migr_rec(st) < 0) { | |
8553 | dprintf("imsm: Cannot write migration record " | |
8554 | "outside backup area\n"); | |
8555 | return 1; | |
8556 | } | |
8557 | ||
8558 | return 0; | |
8559 | } | |
8560 | ||
8561 | /******************************************************************************* | |
8562 | * Function: recover_backup_imsm | |
8563 | * Description: Function recovers critical data from the Migration Copy Area | |
8564 | * while assembling an array. | |
8565 | * Parameters: | |
8566 | * super : imsm internal array info | |
8567 | * info : general array info | |
8568 | * Returns: | |
8569 | * 0 : success (or there is no data to recover) | |
8570 | * 1 : fail | |
8571 | ******************************************************************************/ | |
8572 | int recover_backup_imsm(struct supertype *st, struct mdinfo *info) | |
8573 | { | |
8574 | struct intel_super *super = st->sb; | |
8575 | struct migr_record *migr_rec = super->migr_rec; | |
8576 | struct imsm_map *map_dest = NULL; | |
8577 | struct intel_dev *id = NULL; | |
8578 | unsigned long long read_offset; | |
8579 | unsigned long long write_offset; | |
8580 | unsigned unit_len; | |
8581 | int *targets = NULL; | |
8582 | int new_disks, i, err; | |
8583 | char *buf = NULL; | |
8584 | int retval = 1; | |
8585 | unsigned long curr_migr_unit = __le32_to_cpu(migr_rec->curr_migr_unit); | |
8586 | unsigned long num_migr_units = __le32_to_cpu(migr_rec->num_migr_units); | |
8587 | char buffer[20]; | |
8588 | int skipped_disks = 0; | |
8589 | ||
8590 | err = sysfs_get_str(info, NULL, "array_state", (char *)buffer, 20); | |
8591 | if (err < 1) | |
8592 | return 1; | |
8593 | ||
8594 | /* recover data only during assemblation */ | |
8595 | if (strncmp(buffer, "inactive", 8) != 0) | |
8596 | return 0; | |
8597 | /* no data to recover */ | |
8598 | if (__le32_to_cpu(migr_rec->rec_status) == UNIT_SRC_NORMAL) | |
8599 | return 0; | |
8600 | if (curr_migr_unit >= num_migr_units) | |
8601 | return 1; | |
8602 | ||
8603 | /* find device during reshape */ | |
8604 | for (id = super->devlist; id; id = id->next) | |
8605 | if (is_gen_migration(id->dev)) | |
8606 | break; | |
8607 | if (id == NULL) | |
8608 | return 1; | |
8609 | ||
8610 | map_dest = get_imsm_map(id->dev, MAP_0); | |
8611 | new_disks = map_dest->num_members; | |
8612 | ||
8613 | read_offset = (unsigned long long) | |
8614 | __le32_to_cpu(migr_rec->ckpt_area_pba) * 512; | |
8615 | ||
8616 | write_offset = ((unsigned long long) | |
8617 | __le32_to_cpu(migr_rec->dest_1st_member_lba) + | |
8618 | __le32_to_cpu(map_dest->pba_of_lba0)) * 512; | |
8619 | ||
8620 | unit_len = __le32_to_cpu(migr_rec->dest_depth_per_unit) * 512; | |
8621 | if (posix_memalign((void **)&buf, 512, unit_len) != 0) | |
8622 | goto abort; | |
8623 | targets = malloc(new_disks * sizeof(int)); | |
8624 | if (!targets) | |
8625 | goto abort; | |
8626 | ||
8627 | if (open_backup_targets(info, new_disks, targets, super, id->dev)) { | |
8628 | fprintf(stderr, | |
8629 | Name ": Cannot open some devices belonging to array.\n"); | |
8630 | goto abort; | |
8631 | } | |
8632 | ||
8633 | for (i = 0; i < new_disks; i++) { | |
8634 | if (targets[i] < 0) { | |
8635 | skipped_disks++; | |
8636 | continue; | |
8637 | } | |
8638 | if (lseek64(targets[i], read_offset, SEEK_SET) < 0) { | |
8639 | fprintf(stderr, | |
8640 | Name ": Cannot seek to block: %s\n", | |
8641 | strerror(errno)); | |
8642 | skipped_disks++; | |
8643 | continue; | |
8644 | } | |
8645 | if ((unsigned)read(targets[i], buf, unit_len) != unit_len) { | |
8646 | fprintf(stderr, | |
8647 | Name ": Cannot read copy area block: %s\n", | |
8648 | strerror(errno)); | |
8649 | skipped_disks++; | |
8650 | continue; | |
8651 | } | |
8652 | if (lseek64(targets[i], write_offset, SEEK_SET) < 0) { | |
8653 | fprintf(stderr, | |
8654 | Name ": Cannot seek to block: %s\n", | |
8655 | strerror(errno)); | |
8656 | skipped_disks++; | |
8657 | continue; | |
8658 | } | |
8659 | if ((unsigned)write(targets[i], buf, unit_len) != unit_len) { | |
8660 | fprintf(stderr, | |
8661 | Name ": Cannot restore block: %s\n", | |
8662 | strerror(errno)); | |
8663 | skipped_disks++; | |
8664 | continue; | |
8665 | } | |
8666 | } | |
8667 | ||
8668 | if (skipped_disks > imsm_get_allowed_degradation(info->new_level, | |
8669 | new_disks, | |
8670 | super, | |
8671 | id->dev)) { | |
8672 | fprintf(stderr, | |
8673 | Name ": Cannot restore data from backup." | |
8674 | " Too many failed disks\n"); | |
8675 | goto abort; | |
8676 | } | |
8677 | ||
8678 | if (save_checkpoint_imsm(st, info, UNIT_SRC_NORMAL)) { | |
8679 | /* ignore error == 2, this can mean end of reshape here | |
8680 | */ | |
8681 | dprintf("imsm: Cannot write checkpoint to " | |
8682 | "migration record (UNIT_SRC_NORMAL) during restart\n"); | |
8683 | } else | |
8684 | retval = 0; | |
8685 | ||
8686 | abort: | |
8687 | if (targets) { | |
8688 | for (i = 0; i < new_disks; i++) | |
8689 | if (targets[i]) | |
8690 | close(targets[i]); | |
8691 | free(targets); | |
8692 | } | |
8693 | free(buf); | |
8694 | return retval; | |
8695 | } | |
8696 | ||
8697 | static char disk_by_path[] = "/dev/disk/by-path/"; | |
8698 | ||
8699 | static const char *imsm_get_disk_controller_domain(const char *path) | |
8700 | { | |
8701 | char disk_path[PATH_MAX]; | |
8702 | char *drv=NULL; | |
8703 | struct stat st; | |
8704 | ||
8705 | strncpy(disk_path, disk_by_path, PATH_MAX - 1); | |
8706 | strncat(disk_path, path, PATH_MAX - strlen(disk_path) - 1); | |
8707 | if (stat(disk_path, &st) == 0) { | |
8708 | struct sys_dev* hba; | |
8709 | char *path=NULL; | |
8710 | ||
8711 | path = devt_to_devpath(st.st_rdev); | |
8712 | if (path == NULL) | |
8713 | return "unknown"; | |
8714 | hba = find_disk_attached_hba(-1, path); | |
8715 | if (hba && hba->type == SYS_DEV_SAS) | |
8716 | drv = "isci"; | |
8717 | else if (hba && hba->type == SYS_DEV_SATA) | |
8718 | drv = "ahci"; | |
8719 | else | |
8720 | drv = "unknown"; | |
8721 | dprintf("path: %s hba: %s attached: %s\n", | |
8722 | path, (hba) ? hba->path : "NULL", drv); | |
8723 | free(path); | |
8724 | if (hba) | |
8725 | free_sys_dev(&hba); | |
8726 | } | |
8727 | return drv; | |
8728 | } | |
8729 | ||
8730 | static int imsm_find_array_minor_by_subdev(int subdev, int container, int *minor) | |
8731 | { | |
8732 | char subdev_name[20]; | |
8733 | struct mdstat_ent *mdstat; | |
8734 | ||
8735 | sprintf(subdev_name, "%d", subdev); | |
8736 | mdstat = mdstat_by_subdev(subdev_name, container); | |
8737 | if (!mdstat) | |
8738 | return -1; | |
8739 | ||
8740 | *minor = mdstat->devnum; | |
8741 | free_mdstat(mdstat); | |
8742 | return 0; | |
8743 | } | |
8744 | ||
8745 | static int imsm_reshape_is_allowed_on_container(struct supertype *st, | |
8746 | struct geo_params *geo, | |
8747 | int *old_raid_disks) | |
8748 | { | |
8749 | /* currently we only support increasing the number of devices | |
8750 | * for a container. This increases the number of device for each | |
8751 | * member array. They must all be RAID0 or RAID5. | |
8752 | */ | |
8753 | int ret_val = 0; | |
8754 | struct mdinfo *info, *member; | |
8755 | int devices_that_can_grow = 0; | |
8756 | ||
8757 | dprintf("imsm: imsm_reshape_is_allowed_on_container(ENTER): " | |
8758 | "st->devnum = (%i)\n", | |
8759 | st->devnum); | |
8760 | ||
8761 | if (geo->size != -1 || | |
8762 | geo->level != UnSet || | |
8763 | geo->layout != UnSet || | |
8764 | geo->chunksize != 0 || | |
8765 | geo->raid_disks == UnSet) { | |
8766 | dprintf("imsm: Container operation is allowed for " | |
8767 | "raid disks number change only.\n"); | |
8768 | return ret_val; | |
8769 | } | |
8770 | ||
8771 | info = container_content_imsm(st, NULL); | |
8772 | for (member = info; member; member = member->next) { | |
8773 | int result; | |
8774 | int minor; | |
8775 | ||
8776 | dprintf("imsm: checking device_num: %i\n", | |
8777 | member->container_member); | |
8778 | ||
8779 | if (geo->raid_disks <= member->array.raid_disks) { | |
8780 | /* we work on container for Online Capacity Expansion | |
8781 | * only so raid_disks has to grow | |
8782 | */ | |
8783 | dprintf("imsm: for container operation raid disks " | |
8784 | "increase is required\n"); | |
8785 | break; | |
8786 | } | |
8787 | ||
8788 | if ((info->array.level != 0) && | |
8789 | (info->array.level != 5)) { | |
8790 | /* we cannot use this container with other raid level | |
8791 | */ | |
8792 | dprintf("imsm: for container operation wrong" | |
8793 | " raid level (%i) detected\n", | |
8794 | info->array.level); | |
8795 | break; | |
8796 | } else { | |
8797 | /* check for platform support | |
8798 | * for this raid level configuration | |
8799 | */ | |
8800 | struct intel_super *super = st->sb; | |
8801 | if (!is_raid_level_supported(super->orom, | |
8802 | member->array.level, | |
8803 | geo->raid_disks)) { | |
8804 | dprintf("platform does not support raid%d with" | |
8805 | " %d disk%s\n", | |
8806 | info->array.level, | |
8807 | geo->raid_disks, | |
8808 | geo->raid_disks > 1 ? "s" : ""); | |
8809 | break; | |
8810 | } | |
8811 | /* check if component size is aligned to chunk size | |
8812 | */ | |
8813 | if (info->component_size % | |
8814 | (info->array.chunk_size/512)) { | |
8815 | dprintf("Component size is not aligned to " | |
8816 | "chunk size\n"); | |
8817 | break; | |
8818 | } | |
8819 | } | |
8820 | ||
8821 | if (*old_raid_disks && | |
8822 | info->array.raid_disks != *old_raid_disks) | |
8823 | break; | |
8824 | *old_raid_disks = info->array.raid_disks; | |
8825 | ||
8826 | /* All raid5 and raid0 volumes in container | |
8827 | * have to be ready for Online Capacity Expansion | |
8828 | * so they need to be assembled. We have already | |
8829 | * checked that no recovery etc is happening. | |
8830 | */ | |
8831 | result = imsm_find_array_minor_by_subdev(member->container_member, | |
8832 | st->container_dev, | |
8833 | &minor); | |
8834 | if (result < 0) { | |
8835 | dprintf("imsm: cannot find array\n"); | |
8836 | break; | |
8837 | } | |
8838 | devices_that_can_grow++; | |
8839 | } | |
8840 | sysfs_free(info); | |
8841 | if (!member && devices_that_can_grow) | |
8842 | ret_val = 1; | |
8843 | ||
8844 | if (ret_val) | |
8845 | dprintf("\tContainer operation allowed\n"); | |
8846 | else | |
8847 | dprintf("\tError: %i\n", ret_val); | |
8848 | ||
8849 | return ret_val; | |
8850 | } | |
8851 | ||
8852 | /* Function: get_spares_for_grow | |
8853 | * Description: Allocates memory and creates list of spare devices | |
8854 | * avaliable in container. Checks if spare drive size is acceptable. | |
8855 | * Parameters: Pointer to the supertype structure | |
8856 | * Returns: Pointer to the list of spare devices (mdinfo structure) on success, | |
8857 | * NULL if fail | |
8858 | */ | |
8859 | static struct mdinfo *get_spares_for_grow(struct supertype *st) | |
8860 | { | |
8861 | unsigned long long min_size = min_acceptable_spare_size_imsm(st); | |
8862 | return container_choose_spares(st, min_size, NULL, NULL, NULL, 0); | |
8863 | } | |
8864 | ||
8865 | /****************************************************************************** | |
8866 | * function: imsm_create_metadata_update_for_reshape | |
8867 | * Function creates update for whole IMSM container. | |
8868 | * | |
8869 | ******************************************************************************/ | |
8870 | static int imsm_create_metadata_update_for_reshape( | |
8871 | struct supertype *st, | |
8872 | struct geo_params *geo, | |
8873 | int old_raid_disks, | |
8874 | struct imsm_update_reshape **updatep) | |
8875 | { | |
8876 | struct intel_super *super = st->sb; | |
8877 | struct imsm_super *mpb = super->anchor; | |
8878 | int update_memory_size = 0; | |
8879 | struct imsm_update_reshape *u = NULL; | |
8880 | struct mdinfo *spares = NULL; | |
8881 | int i; | |
8882 | int delta_disks = 0; | |
8883 | struct mdinfo *dev; | |
8884 | ||
8885 | dprintf("imsm_update_metadata_for_reshape(enter) raid_disks = %i\n", | |
8886 | geo->raid_disks); | |
8887 | ||
8888 | delta_disks = geo->raid_disks - old_raid_disks; | |
8889 | ||
8890 | /* size of all update data without anchor */ | |
8891 | update_memory_size = sizeof(struct imsm_update_reshape); | |
8892 | ||
8893 | /* now add space for spare disks that we need to add. */ | |
8894 | update_memory_size += sizeof(u->new_disks[0]) * (delta_disks - 1); | |
8895 | ||
8896 | u = calloc(1, update_memory_size); | |
8897 | if (u == NULL) { | |
8898 | dprintf("error: " | |
8899 | "cannot get memory for imsm_update_reshape update\n"); | |
8900 | return 0; | |
8901 | } | |
8902 | u->type = update_reshape_container_disks; | |
8903 | u->old_raid_disks = old_raid_disks; | |
8904 | u->new_raid_disks = geo->raid_disks; | |
8905 | ||
8906 | /* now get spare disks list | |
8907 | */ | |
8908 | spares = get_spares_for_grow(st); | |
8909 | ||
8910 | if (spares == NULL | |
8911 | || delta_disks > spares->array.spare_disks) { | |
8912 | fprintf(stderr, Name ": imsm: ERROR: Cannot get spare devices " | |
8913 | "for %s.\n", geo->dev_name); | |
8914 | i = -1; | |
8915 | goto abort; | |
8916 | } | |
8917 | ||
8918 | /* we have got spares | |
8919 | * update disk list in imsm_disk list table in anchor | |
8920 | */ | |
8921 | dprintf("imsm: %i spares are available.\n\n", | |
8922 | spares->array.spare_disks); | |
8923 | ||
8924 | dev = spares->devs; | |
8925 | for (i = 0; i < delta_disks; i++) { | |
8926 | struct dl *dl; | |
8927 | ||
8928 | if (dev == NULL) | |
8929 | break; | |
8930 | u->new_disks[i] = makedev(dev->disk.major, | |
8931 | dev->disk.minor); | |
8932 | dl = get_disk_super(super, dev->disk.major, dev->disk.minor); | |
8933 | dl->index = mpb->num_disks; | |
8934 | mpb->num_disks++; | |
8935 | dev = dev->next; | |
8936 | } | |
8937 | ||
8938 | abort: | |
8939 | /* free spares | |
8940 | */ | |
8941 | sysfs_free(spares); | |
8942 | ||
8943 | dprintf("imsm: reshape update preparation :"); | |
8944 | if (i == delta_disks) { | |
8945 | dprintf(" OK\n"); | |
8946 | *updatep = u; | |
8947 | return update_memory_size; | |
8948 | } | |
8949 | free(u); | |
8950 | dprintf(" Error\n"); | |
8951 | ||
8952 | return 0; | |
8953 | } | |
8954 | ||
8955 | /****************************************************************************** | |
8956 | * function: imsm_create_metadata_update_for_migration() | |
8957 | * Creates update for IMSM array. | |
8958 | * | |
8959 | ******************************************************************************/ | |
8960 | static int imsm_create_metadata_update_for_migration( | |
8961 | struct supertype *st, | |
8962 | struct geo_params *geo, | |
8963 | struct imsm_update_reshape_migration **updatep) | |
8964 | { | |
8965 | struct intel_super *super = st->sb; | |
8966 | int update_memory_size = 0; | |
8967 | struct imsm_update_reshape_migration *u = NULL; | |
8968 | struct imsm_dev *dev; | |
8969 | int previous_level = -1; | |
8970 | ||
8971 | dprintf("imsm_create_metadata_update_for_migration(enter)" | |
8972 | " New Level = %i\n", geo->level); | |
8973 | ||
8974 | /* size of all update data without anchor */ | |
8975 | update_memory_size = sizeof(struct imsm_update_reshape_migration); | |
8976 | ||
8977 | u = calloc(1, update_memory_size); | |
8978 | if (u == NULL) { | |
8979 | dprintf("error: cannot get memory for " | |
8980 | "imsm_create_metadata_update_for_migration\n"); | |
8981 | return 0; | |
8982 | } | |
8983 | u->type = update_reshape_migration; | |
8984 | u->subdev = super->current_vol; | |
8985 | u->new_level = geo->level; | |
8986 | u->new_layout = geo->layout; | |
8987 | u->new_raid_disks = u->old_raid_disks = geo->raid_disks; | |
8988 | u->new_disks[0] = -1; | |
8989 | u->new_chunksize = -1; | |
8990 | ||
8991 | dev = get_imsm_dev(super, u->subdev); | |
8992 | if (dev) { | |
8993 | struct imsm_map *map; | |
8994 | ||
8995 | map = get_imsm_map(dev, MAP_0); | |
8996 | if (map) { | |
8997 | int current_chunk_size = | |
8998 | __le16_to_cpu(map->blocks_per_strip) / 2; | |
8999 | ||
9000 | if (geo->chunksize != current_chunk_size) { | |
9001 | u->new_chunksize = geo->chunksize / 1024; | |
9002 | dprintf("imsm: " | |
9003 | "chunk size change from %i to %i\n", | |
9004 | current_chunk_size, u->new_chunksize); | |
9005 | } | |
9006 | previous_level = map->raid_level; | |
9007 | } | |
9008 | } | |
9009 | if ((geo->level == 5) && (previous_level == 0)) { | |
9010 | struct mdinfo *spares = NULL; | |
9011 | ||
9012 | u->new_raid_disks++; | |
9013 | spares = get_spares_for_grow(st); | |
9014 | if ((spares == NULL) || (spares->array.spare_disks < 1)) { | |
9015 | free(u); | |
9016 | sysfs_free(spares); | |
9017 | update_memory_size = 0; | |
9018 | dprintf("error: cannot get spare device " | |
9019 | "for requested migration"); | |
9020 | return 0; | |
9021 | } | |
9022 | sysfs_free(spares); | |
9023 | } | |
9024 | dprintf("imsm: reshape update preparation : OK\n"); | |
9025 | *updatep = u; | |
9026 | ||
9027 | return update_memory_size; | |
9028 | } | |
9029 | ||
9030 | static void imsm_update_metadata_locally(struct supertype *st, | |
9031 | void *buf, int len) | |
9032 | { | |
9033 | struct metadata_update mu; | |
9034 | ||
9035 | mu.buf = buf; | |
9036 | mu.len = len; | |
9037 | mu.space = NULL; | |
9038 | mu.space_list = NULL; | |
9039 | mu.next = NULL; | |
9040 | imsm_prepare_update(st, &mu); | |
9041 | imsm_process_update(st, &mu); | |
9042 | ||
9043 | while (mu.space_list) { | |
9044 | void **space = mu.space_list; | |
9045 | mu.space_list = *space; | |
9046 | free(space); | |
9047 | } | |
9048 | } | |
9049 | ||
9050 | /*************************************************************************** | |
9051 | * Function: imsm_analyze_change | |
9052 | * Description: Function analyze change for single volume | |
9053 | * and validate if transition is supported | |
9054 | * Parameters: Geometry parameters, supertype structure | |
9055 | * Returns: Operation type code on success, -1 if fail | |
9056 | ****************************************************************************/ | |
9057 | enum imsm_reshape_type imsm_analyze_change(struct supertype *st, | |
9058 | struct geo_params *geo) | |
9059 | { | |
9060 | struct mdinfo info; | |
9061 | int change = -1; | |
9062 | int check_devs = 0; | |
9063 | int chunk; | |
9064 | /* number of added/removed disks in operation result */ | |
9065 | int devNumChange = 0; | |
9066 | /* imsm compatible layout value for array geometry verification */ | |
9067 | int imsm_layout = -1; | |
9068 | ||
9069 | getinfo_super_imsm_volume(st, &info, NULL); | |
9070 | if ((geo->level != info.array.level) && | |
9071 | (geo->level >= 0) && | |
9072 | (geo->level != UnSet)) { | |
9073 | switch (info.array.level) { | |
9074 | case 0: | |
9075 | if (geo->level == 5) { | |
9076 | change = CH_MIGRATION; | |
9077 | if (geo->layout != ALGORITHM_LEFT_ASYMMETRIC) { | |
9078 | fprintf(stderr, | |
9079 | Name " Error. Requested Layout " | |
9080 | "not supported (left-asymmetric layout " | |
9081 | "is supported only)!\n"); | |
9082 | change = -1; | |
9083 | goto analyse_change_exit; | |
9084 | } | |
9085 | imsm_layout = geo->layout; | |
9086 | check_devs = 1; | |
9087 | devNumChange = 1; /* parity disk added */ | |
9088 | } else if (geo->level == 10) { | |
9089 | change = CH_TAKEOVER; | |
9090 | check_devs = 1; | |
9091 | devNumChange = 2; /* two mirrors added */ | |
9092 | imsm_layout = 0x102; /* imsm supported layout */ | |
9093 | } | |
9094 | break; | |
9095 | case 1: | |
9096 | case 10: | |
9097 | if (geo->level == 0) { | |
9098 | change = CH_TAKEOVER; | |
9099 | check_devs = 1; | |
9100 | devNumChange = -(geo->raid_disks/2); | |
9101 | imsm_layout = 0; /* imsm raid0 layout */ | |
9102 | } | |
9103 | break; | |
9104 | } | |
9105 | if (change == -1) { | |
9106 | fprintf(stderr, | |
9107 | Name " Error. Level Migration from %d to %d " | |
9108 | "not supported!\n", | |
9109 | info.array.level, geo->level); | |
9110 | goto analyse_change_exit; | |
9111 | } | |
9112 | } else | |
9113 | geo->level = info.array.level; | |
9114 | ||
9115 | if ((geo->layout != info.array.layout) | |
9116 | && ((geo->layout != UnSet) && (geo->layout != -1))) { | |
9117 | change = CH_MIGRATION; | |
9118 | if ((info.array.layout == 0) | |
9119 | && (info.array.level == 5) | |
9120 | && (geo->layout == 5)) { | |
9121 | /* reshape 5 -> 4 */ | |
9122 | } else if ((info.array.layout == 5) | |
9123 | && (info.array.level == 5) | |
9124 | && (geo->layout == 0)) { | |
9125 | /* reshape 4 -> 5 */ | |
9126 | geo->layout = 0; | |
9127 | geo->level = 5; | |
9128 | } else { | |
9129 | fprintf(stderr, | |
9130 | Name " Error. Layout Migration from %d to %d " | |
9131 | "not supported!\n", | |
9132 | info.array.layout, geo->layout); | |
9133 | change = -1; | |
9134 | goto analyse_change_exit; | |
9135 | } | |
9136 | } else { | |
9137 | geo->layout = info.array.layout; | |
9138 | if (imsm_layout == -1) | |
9139 | imsm_layout = info.array.layout; | |
9140 | } | |
9141 | ||
9142 | if ((geo->chunksize > 0) && (geo->chunksize != UnSet) | |
9143 | && (geo->chunksize != info.array.chunk_size)) | |
9144 | change = CH_MIGRATION; | |
9145 | else | |
9146 | geo->chunksize = info.array.chunk_size; | |
9147 | ||
9148 | chunk = geo->chunksize / 1024; | |
9149 | if (!validate_geometry_imsm(st, | |
9150 | geo->level, | |
9151 | imsm_layout, | |
9152 | geo->raid_disks + devNumChange, | |
9153 | &chunk, | |
9154 | geo->size, | |
9155 | 0, 0, 1)) | |
9156 | change = -1; | |
9157 | ||
9158 | if (check_devs) { | |
9159 | struct intel_super *super = st->sb; | |
9160 | struct imsm_super *mpb = super->anchor; | |
9161 | ||
9162 | if (mpb->num_raid_devs > 1) { | |
9163 | fprintf(stderr, | |
9164 | Name " Error. Cannot perform operation on %s" | |
9165 | "- for this operation it MUST be single " | |
9166 | "array in container\n", | |
9167 | geo->dev_name); | |
9168 | change = -1; | |
9169 | } | |
9170 | } | |
9171 | ||
9172 | analyse_change_exit: | |
9173 | ||
9174 | return change; | |
9175 | } | |
9176 | ||
9177 | int imsm_takeover(struct supertype *st, struct geo_params *geo) | |
9178 | { | |
9179 | struct intel_super *super = st->sb; | |
9180 | struct imsm_update_takeover *u; | |
9181 | ||
9182 | u = malloc(sizeof(struct imsm_update_takeover)); | |
9183 | if (u == NULL) | |
9184 | return 1; | |
9185 | ||
9186 | u->type = update_takeover; | |
9187 | u->subarray = super->current_vol; | |
9188 | ||
9189 | /* 10->0 transition */ | |
9190 | if (geo->level == 0) | |
9191 | u->direction = R10_TO_R0; | |
9192 | ||
9193 | /* 0->10 transition */ | |
9194 | if (geo->level == 10) | |
9195 | u->direction = R0_TO_R10; | |
9196 | ||
9197 | /* update metadata locally */ | |
9198 | imsm_update_metadata_locally(st, u, | |
9199 | sizeof(struct imsm_update_takeover)); | |
9200 | /* and possibly remotely */ | |
9201 | if (st->update_tail) | |
9202 | append_metadata_update(st, u, | |
9203 | sizeof(struct imsm_update_takeover)); | |
9204 | else | |
9205 | free(u); | |
9206 | ||
9207 | return 0; | |
9208 | } | |
9209 | ||
9210 | static int imsm_reshape_super(struct supertype *st, long long size, int level, | |
9211 | int layout, int chunksize, int raid_disks, | |
9212 | int delta_disks, char *backup, char *dev, | |
9213 | int verbose) | |
9214 | { | |
9215 | int ret_val = 1; | |
9216 | struct geo_params geo; | |
9217 | ||
9218 | dprintf("imsm: reshape_super called.\n"); | |
9219 | ||
9220 | memset(&geo, 0, sizeof(struct geo_params)); | |
9221 | ||
9222 | geo.dev_name = dev; | |
9223 | geo.dev_id = st->devnum; | |
9224 | geo.size = size; | |
9225 | geo.level = level; | |
9226 | geo.layout = layout; | |
9227 | geo.chunksize = chunksize; | |
9228 | geo.raid_disks = raid_disks; | |
9229 | if (delta_disks != UnSet) | |
9230 | geo.raid_disks += delta_disks; | |
9231 | ||
9232 | dprintf("\tfor level : %i\n", geo.level); | |
9233 | dprintf("\tfor raid_disks : %i\n", geo.raid_disks); | |
9234 | ||
9235 | if (experimental() == 0) | |
9236 | return ret_val; | |
9237 | ||
9238 | if (st->container_dev == st->devnum) { | |
9239 | /* On container level we can only increase number of devices. */ | |
9240 | dprintf("imsm: info: Container operation\n"); | |
9241 | int old_raid_disks = 0; | |
9242 | ||
9243 | if (imsm_reshape_is_allowed_on_container( | |
9244 | st, &geo, &old_raid_disks)) { | |
9245 | struct imsm_update_reshape *u = NULL; | |
9246 | int len; | |
9247 | ||
9248 | len = imsm_create_metadata_update_for_reshape( | |
9249 | st, &geo, old_raid_disks, &u); | |
9250 | ||
9251 | if (len <= 0) { | |
9252 | dprintf("imsm: Cannot prepare update\n"); | |
9253 | goto exit_imsm_reshape_super; | |
9254 | } | |
9255 | ||
9256 | ret_val = 0; | |
9257 | /* update metadata locally */ | |
9258 | imsm_update_metadata_locally(st, u, len); | |
9259 | /* and possibly remotely */ | |
9260 | if (st->update_tail) | |
9261 | append_metadata_update(st, u, len); | |
9262 | else | |
9263 | free(u); | |
9264 | ||
9265 | } else { | |
9266 | fprintf(stderr, Name ": (imsm) Operation " | |
9267 | "is not allowed on this container\n"); | |
9268 | } | |
9269 | } else { | |
9270 | /* On volume level we support following operations | |
9271 | * - takeover: raid10 -> raid0; raid0 -> raid10 | |
9272 | * - chunk size migration | |
9273 | * - migration: raid5 -> raid0; raid0 -> raid5 | |
9274 | */ | |
9275 | struct intel_super *super = st->sb; | |
9276 | struct intel_dev *dev = super->devlist; | |
9277 | int change, devnum; | |
9278 | dprintf("imsm: info: Volume operation\n"); | |
9279 | /* find requested device */ | |
9280 | while (dev) { | |
9281 | if (imsm_find_array_minor_by_subdev( | |
9282 | dev->index, st->container_dev, &devnum) == 0 | |
9283 | && devnum == geo.dev_id) | |
9284 | break; | |
9285 | dev = dev->next; | |
9286 | } | |
9287 | if (dev == NULL) { | |
9288 | fprintf(stderr, Name " Cannot find %s (%i) subarray\n", | |
9289 | geo.dev_name, geo.dev_id); | |
9290 | goto exit_imsm_reshape_super; | |
9291 | } | |
9292 | super->current_vol = dev->index; | |
9293 | change = imsm_analyze_change(st, &geo); | |
9294 | switch (change) { | |
9295 | case CH_TAKEOVER: | |
9296 | ret_val = imsm_takeover(st, &geo); | |
9297 | break; | |
9298 | case CH_MIGRATION: { | |
9299 | struct imsm_update_reshape_migration *u = NULL; | |
9300 | int len = | |
9301 | imsm_create_metadata_update_for_migration( | |
9302 | st, &geo, &u); | |
9303 | if (len < 1) { | |
9304 | dprintf("imsm: " | |
9305 | "Cannot prepare update\n"); | |
9306 | break; | |
9307 | } | |
9308 | ret_val = 0; | |
9309 | /* update metadata locally */ | |
9310 | imsm_update_metadata_locally(st, u, len); | |
9311 | /* and possibly remotely */ | |
9312 | if (st->update_tail) | |
9313 | append_metadata_update(st, u, len); | |
9314 | else | |
9315 | free(u); | |
9316 | } | |
9317 | break; | |
9318 | default: | |
9319 | ret_val = 1; | |
9320 | } | |
9321 | } | |
9322 | ||
9323 | exit_imsm_reshape_super: | |
9324 | dprintf("imsm: reshape_super Exit code = %i\n", ret_val); | |
9325 | return ret_val; | |
9326 | } | |
9327 | ||
9328 | /******************************************************************************* | |
9329 | * Function: wait_for_reshape_imsm | |
9330 | * Description: Function writes new sync_max value and waits until | |
9331 | * reshape process reach new position | |
9332 | * Parameters: | |
9333 | * sra : general array info | |
9334 | * ndata : number of disks in new array's layout | |
9335 | * Returns: | |
9336 | * 0 : success, | |
9337 | * 1 : there is no reshape in progress, | |
9338 | * -1 : fail | |
9339 | ******************************************************************************/ | |
9340 | int wait_for_reshape_imsm(struct mdinfo *sra, int ndata) | |
9341 | { | |
9342 | int fd = sysfs_get_fd(sra, NULL, "reshape_position"); | |
9343 | unsigned long long completed; | |
9344 | /* to_complete : new sync_max position */ | |
9345 | unsigned long long to_complete = sra->reshape_progress; | |
9346 | unsigned long long position_to_set = to_complete / ndata; | |
9347 | ||
9348 | if (fd < 0) { | |
9349 | dprintf("imsm: wait_for_reshape_imsm() " | |
9350 | "cannot open reshape_position\n"); | |
9351 | return 1; | |
9352 | } | |
9353 | ||
9354 | if (sysfs_fd_get_ll(fd, &completed) < 0) { | |
9355 | dprintf("imsm: wait_for_reshape_imsm() " | |
9356 | "cannot read reshape_position (no reshape in progres)\n"); | |
9357 | close(fd); | |
9358 | return 0; | |
9359 | } | |
9360 | ||
9361 | if (completed > to_complete) { | |
9362 | dprintf("imsm: wait_for_reshape_imsm() " | |
9363 | "wrong next position to set %llu (%llu)\n", | |
9364 | to_complete, completed); | |
9365 | close(fd); | |
9366 | return -1; | |
9367 | } | |
9368 | dprintf("Position set: %llu\n", position_to_set); | |
9369 | if (sysfs_set_num(sra, NULL, "sync_max", | |
9370 | position_to_set) != 0) { | |
9371 | dprintf("imsm: wait_for_reshape_imsm() " | |
9372 | "cannot set reshape position to %llu\n", | |
9373 | position_to_set); | |
9374 | close(fd); | |
9375 | return -1; | |
9376 | } | |
9377 | ||
9378 | do { | |
9379 | char action[20]; | |
9380 | fd_set rfds; | |
9381 | FD_ZERO(&rfds); | |
9382 | FD_SET(fd, &rfds); | |
9383 | select(fd+1, &rfds, NULL, NULL, NULL); | |
9384 | if (sysfs_get_str(sra, NULL, "sync_action", | |
9385 | action, 20) > 0 && | |
9386 | strncmp(action, "reshape", 7) != 0) | |
9387 | break; | |
9388 | if (sysfs_fd_get_ll(fd, &completed) < 0) { | |
9389 | dprintf("imsm: wait_for_reshape_imsm() " | |
9390 | "cannot read reshape_position (in loop)\n"); | |
9391 | close(fd); | |
9392 | return 1; | |
9393 | } | |
9394 | } while (completed < to_complete); | |
9395 | close(fd); | |
9396 | return 0; | |
9397 | ||
9398 | } | |
9399 | ||
9400 | /******************************************************************************* | |
9401 | * Function: check_degradation_change | |
9402 | * Description: Check that array hasn't become failed. | |
9403 | * Parameters: | |
9404 | * info : for sysfs access | |
9405 | * sources : source disks descriptors | |
9406 | * degraded: previous degradation level | |
9407 | * Returns: | |
9408 | * degradation level | |
9409 | ******************************************************************************/ | |
9410 | int check_degradation_change(struct mdinfo *info, | |
9411 | int *sources, | |
9412 | int degraded) | |
9413 | { | |
9414 | unsigned long long new_degraded; | |
9415 | sysfs_get_ll(info, NULL, "degraded", &new_degraded); | |
9416 | if (new_degraded != (unsigned long long)degraded) { | |
9417 | /* check each device to ensure it is still working */ | |
9418 | struct mdinfo *sd; | |
9419 | new_degraded = 0; | |
9420 | for (sd = info->devs ; sd ; sd = sd->next) { | |
9421 | if (sd->disk.state & (1<<MD_DISK_FAULTY)) | |
9422 | continue; | |
9423 | if (sd->disk.state & (1<<MD_DISK_SYNC)) { | |
9424 | char sbuf[20]; | |
9425 | if (sysfs_get_str(info, | |
9426 | sd, "state", sbuf, 20) < 0 || | |
9427 | strstr(sbuf, "faulty") || | |
9428 | strstr(sbuf, "in_sync") == NULL) { | |
9429 | /* this device is dead */ | |
9430 | sd->disk.state = (1<<MD_DISK_FAULTY); | |
9431 | if (sd->disk.raid_disk >= 0 && | |
9432 | sources[sd->disk.raid_disk] >= 0) { | |
9433 | close(sources[ | |
9434 | sd->disk.raid_disk]); | |
9435 | sources[sd->disk.raid_disk] = | |
9436 | -1; | |
9437 | } | |
9438 | new_degraded++; | |
9439 | } | |
9440 | } | |
9441 | } | |
9442 | } | |
9443 | ||
9444 | return new_degraded; | |
9445 | } | |
9446 | ||
9447 | /******************************************************************************* | |
9448 | * Function: imsm_manage_reshape | |
9449 | * Description: Function finds array under reshape and it manages reshape | |
9450 | * process. It creates stripes backups (if required) and sets | |
9451 | * checheckpoits. | |
9452 | * Parameters: | |
9453 | * afd : Backup handle (nattive) - not used | |
9454 | * sra : general array info | |
9455 | * reshape : reshape parameters - not used | |
9456 | * st : supertype structure | |
9457 | * blocks : size of critical section [blocks] | |
9458 | * fds : table of source device descriptor | |
9459 | * offsets : start of array (offest per devices) | |
9460 | * dests : not used | |
9461 | * destfd : table of destination device descriptor | |
9462 | * destoffsets : table of destination offsets (per device) | |
9463 | * Returns: | |
9464 | * 1 : success, reshape is done | |
9465 | * 0 : fail | |
9466 | ******************************************************************************/ | |
9467 | static int imsm_manage_reshape( | |
9468 | int afd, struct mdinfo *sra, struct reshape *reshape, | |
9469 | struct supertype *st, unsigned long backup_blocks, | |
9470 | int *fds, unsigned long long *offsets, | |
9471 | int dests, int *destfd, unsigned long long *destoffsets) | |
9472 | { | |
9473 | int ret_val = 0; | |
9474 | struct intel_super *super = st->sb; | |
9475 | struct intel_dev *dv = NULL; | |
9476 | struct imsm_dev *dev = NULL; | |
9477 | struct imsm_map *map_src; | |
9478 | int migr_vol_qan = 0; | |
9479 | int ndata, odata; /* [bytes] */ | |
9480 | int chunk; /* [bytes] */ | |
9481 | struct migr_record *migr_rec; | |
9482 | char *buf = NULL; | |
9483 | unsigned int buf_size; /* [bytes] */ | |
9484 | unsigned long long max_position; /* array size [bytes] */ | |
9485 | unsigned long long next_step; /* [blocks]/[bytes] */ | |
9486 | unsigned long long old_data_stripe_length; | |
9487 | unsigned long long start_src; /* [bytes] */ | |
9488 | unsigned long long start; /* [bytes] */ | |
9489 | unsigned long long start_buf_shift; /* [bytes] */ | |
9490 | int degraded = 0; | |
9491 | int source_layout = 0; | |
9492 | ||
9493 | if (!fds || !offsets || !sra) | |
9494 | goto abort; | |
9495 | ||
9496 | /* Find volume during the reshape */ | |
9497 | for (dv = super->devlist; dv; dv = dv->next) { | |
9498 | if (dv->dev->vol.migr_type == MIGR_GEN_MIGR | |
9499 | && dv->dev->vol.migr_state == 1) { | |
9500 | dev = dv->dev; | |
9501 | migr_vol_qan++; | |
9502 | } | |
9503 | } | |
9504 | /* Only one volume can migrate at the same time */ | |
9505 | if (migr_vol_qan != 1) { | |
9506 | fprintf(stderr, Name " : %s", migr_vol_qan ? | |
9507 | "Number of migrating volumes greater than 1\n" : | |
9508 | "There is no volume during migrationg\n"); | |
9509 | goto abort; | |
9510 | } | |
9511 | ||
9512 | map_src = get_imsm_map(dev, MAP_1); | |
9513 | if (map_src == NULL) | |
9514 | goto abort; | |
9515 | ||
9516 | ndata = imsm_num_data_members(dev, MAP_0); | |
9517 | odata = imsm_num_data_members(dev, MAP_1); | |
9518 | ||
9519 | chunk = __le16_to_cpu(map_src->blocks_per_strip) * 512; | |
9520 | old_data_stripe_length = odata * chunk; | |
9521 | ||
9522 | migr_rec = super->migr_rec; | |
9523 | ||
9524 | /* initialize migration record for start condition */ | |
9525 | if (sra->reshape_progress == 0) | |
9526 | init_migr_record_imsm(st, dev, sra); | |
9527 | else { | |
9528 | if (__le32_to_cpu(migr_rec->rec_status) != UNIT_SRC_NORMAL) { | |
9529 | dprintf("imsm: cannot restart migration when data " | |
9530 | "are present in copy area.\n"); | |
9531 | goto abort; | |
9532 | } | |
9533 | } | |
9534 | ||
9535 | /* size for data */ | |
9536 | buf_size = __le32_to_cpu(migr_rec->blocks_per_unit) * 512; | |
9537 | /* extend buffer size for parity disk */ | |
9538 | buf_size += __le32_to_cpu(migr_rec->dest_depth_per_unit) * 512; | |
9539 | /* add space for stripe aligment */ | |
9540 | buf_size += old_data_stripe_length; | |
9541 | if (posix_memalign((void **)&buf, 4096, buf_size)) { | |
9542 | dprintf("imsm: Cannot allocate checpoint buffer\n"); | |
9543 | goto abort; | |
9544 | } | |
9545 | ||
9546 | max_position = sra->component_size * ndata; | |
9547 | source_layout = imsm_level_to_layout(map_src->raid_level); | |
9548 | ||
9549 | while (__le32_to_cpu(migr_rec->curr_migr_unit) < | |
9550 | __le32_to_cpu(migr_rec->num_migr_units)) { | |
9551 | /* current reshape position [blocks] */ | |
9552 | unsigned long long current_position = | |
9553 | __le32_to_cpu(migr_rec->blocks_per_unit) | |
9554 | * __le32_to_cpu(migr_rec->curr_migr_unit); | |
9555 | unsigned long long border; | |
9556 | ||
9557 | /* Check that array hasn't become failed. | |
9558 | */ | |
9559 | degraded = check_degradation_change(sra, fds, degraded); | |
9560 | if (degraded > 1) { | |
9561 | dprintf("imsm: Abort reshape due to degradation" | |
9562 | " level (%i)\n", degraded); | |
9563 | goto abort; | |
9564 | } | |
9565 | ||
9566 | next_step = __le32_to_cpu(migr_rec->blocks_per_unit); | |
9567 | ||
9568 | if ((current_position + next_step) > max_position) | |
9569 | next_step = max_position - current_position; | |
9570 | ||
9571 | start = current_position * 512; | |
9572 | ||
9573 | /* allign reading start to old geometry */ | |
9574 | start_buf_shift = start % old_data_stripe_length; | |
9575 | start_src = start - start_buf_shift; | |
9576 | ||
9577 | border = (start_src / odata) - (start / ndata); | |
9578 | border /= 512; | |
9579 | if (border <= __le32_to_cpu(migr_rec->dest_depth_per_unit)) { | |
9580 | /* save critical stripes to buf | |
9581 | * start - start address of current unit | |
9582 | * to backup [bytes] | |
9583 | * start_src - start address of current unit | |
9584 | * to backup alligned to source array | |
9585 | * [bytes] | |
9586 | */ | |
9587 | unsigned long long next_step_filler = 0; | |
9588 | unsigned long long copy_length = next_step * 512; | |
9589 | ||
9590 | /* allign copy area length to stripe in old geometry */ | |
9591 | next_step_filler = ((copy_length + start_buf_shift) | |
9592 | % old_data_stripe_length); | |
9593 | if (next_step_filler) | |
9594 | next_step_filler = (old_data_stripe_length | |
9595 | - next_step_filler); | |
9596 | dprintf("save_stripes() parameters: start = %llu," | |
9597 | "\tstart_src = %llu,\tnext_step*512 = %llu," | |
9598 | "\tstart_in_buf_shift = %llu," | |
9599 | "\tnext_step_filler = %llu\n", | |
9600 | start, start_src, copy_length, | |
9601 | start_buf_shift, next_step_filler); | |
9602 | ||
9603 | if (save_stripes(fds, offsets, map_src->num_members, | |
9604 | chunk, map_src->raid_level, | |
9605 | source_layout, 0, NULL, start_src, | |
9606 | copy_length + | |
9607 | next_step_filler + start_buf_shift, | |
9608 | buf)) { | |
9609 | dprintf("imsm: Cannot save stripes" | |
9610 | " to buffer\n"); | |
9611 | goto abort; | |
9612 | } | |
9613 | /* Convert data to destination format and store it | |
9614 | * in backup general migration area | |
9615 | */ | |
9616 | if (save_backup_imsm(st, dev, sra, | |
9617 | buf + start_buf_shift, copy_length)) { | |
9618 | dprintf("imsm: Cannot save stripes to " | |
9619 | "target devices\n"); | |
9620 | goto abort; | |
9621 | } | |
9622 | if (save_checkpoint_imsm(st, sra, | |
9623 | UNIT_SRC_IN_CP_AREA)) { | |
9624 | dprintf("imsm: Cannot write checkpoint to " | |
9625 | "migration record (UNIT_SRC_IN_CP_AREA)\n"); | |
9626 | goto abort; | |
9627 | } | |
9628 | } else { | |
9629 | /* set next step to use whole border area */ | |
9630 | border /= next_step; | |
9631 | if (border > 1) | |
9632 | next_step *= border; | |
9633 | } | |
9634 | /* When data backed up, checkpoint stored, | |
9635 | * kick the kernel to reshape unit of data | |
9636 | */ | |
9637 | next_step = next_step + sra->reshape_progress; | |
9638 | /* limit next step to array max position */ | |
9639 | if (next_step > max_position) | |
9640 | next_step = max_position; | |
9641 | sysfs_set_num(sra, NULL, "suspend_lo", sra->reshape_progress); | |
9642 | sysfs_set_num(sra, NULL, "suspend_hi", next_step); | |
9643 | sra->reshape_progress = next_step; | |
9644 | ||
9645 | /* wait until reshape finish */ | |
9646 | if (wait_for_reshape_imsm(sra, ndata) < 0) { | |
9647 | dprintf("wait_for_reshape_imsm returned error!\n"); | |
9648 | goto abort; | |
9649 | } | |
9650 | ||
9651 | if (save_checkpoint_imsm(st, sra, UNIT_SRC_NORMAL) == 1) { | |
9652 | /* ignore error == 2, this can mean end of reshape here | |
9653 | */ | |
9654 | dprintf("imsm: Cannot write checkpoint to " | |
9655 | "migration record (UNIT_SRC_NORMAL)\n"); | |
9656 | goto abort; | |
9657 | } | |
9658 | ||
9659 | } | |
9660 | ||
9661 | /* return '1' if done */ | |
9662 | ret_val = 1; | |
9663 | abort: | |
9664 | free(buf); | |
9665 | abort_reshape(sra); | |
9666 | ||
9667 | return ret_val; | |
9668 | } | |
9669 | #endif /* MDASSEMBLE */ | |
9670 | ||
9671 | struct superswitch super_imsm = { | |
9672 | #ifndef MDASSEMBLE | |
9673 | .examine_super = examine_super_imsm, | |
9674 | .brief_examine_super = brief_examine_super_imsm, | |
9675 | .brief_examine_subarrays = brief_examine_subarrays_imsm, | |
9676 | .export_examine_super = export_examine_super_imsm, | |
9677 | .detail_super = detail_super_imsm, | |
9678 | .brief_detail_super = brief_detail_super_imsm, | |
9679 | .write_init_super = write_init_super_imsm, | |
9680 | .validate_geometry = validate_geometry_imsm, | |
9681 | .add_to_super = add_to_super_imsm, | |
9682 | .remove_from_super = remove_from_super_imsm, | |
9683 | .detail_platform = detail_platform_imsm, | |
9684 | .kill_subarray = kill_subarray_imsm, | |
9685 | .update_subarray = update_subarray_imsm, | |
9686 | .load_container = load_container_imsm, | |
9687 | .default_geometry = default_geometry_imsm, | |
9688 | .get_disk_controller_domain = imsm_get_disk_controller_domain, | |
9689 | .reshape_super = imsm_reshape_super, | |
9690 | .manage_reshape = imsm_manage_reshape, | |
9691 | .recover_backup = recover_backup_imsm, | |
9692 | #endif | |
9693 | .match_home = match_home_imsm, | |
9694 | .uuid_from_super= uuid_from_super_imsm, | |
9695 | .getinfo_super = getinfo_super_imsm, | |
9696 | .getinfo_super_disks = getinfo_super_disks_imsm, | |
9697 | .update_super = update_super_imsm, | |
9698 | ||
9699 | .avail_size = avail_size_imsm, | |
9700 | .min_acceptable_spare_size = min_acceptable_spare_size_imsm, | |
9701 | ||
9702 | .compare_super = compare_super_imsm, | |
9703 | ||
9704 | .load_super = load_super_imsm, | |
9705 | .init_super = init_super_imsm, | |
9706 | .store_super = store_super_imsm, | |
9707 | .free_super = free_super_imsm, | |
9708 | .match_metadata_desc = match_metadata_desc_imsm, | |
9709 | .container_content = container_content_imsm, | |
9710 | ||
9711 | ||
9712 | .external = 1, | |
9713 | .name = "imsm", | |
9714 | ||
9715 | #ifndef MDASSEMBLE | |
9716 | /* for mdmon */ | |
9717 | .open_new = imsm_open_new, | |
9718 | .set_array_state= imsm_set_array_state, | |
9719 | .set_disk = imsm_set_disk, | |
9720 | .sync_metadata = imsm_sync_metadata, | |
9721 | .activate_spare = imsm_activate_spare, | |
9722 | .process_update = imsm_process_update, | |
9723 | .prepare_update = imsm_prepare_update, | |
9724 | #endif /* MDASSEMBLE */ | |
9725 | }; |