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Commit | Line | Data |
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64c4757e | 1 | /* |
9a9dab36 | 2 | * mdadm - manage Linux "md" devices aka RAID arrays. |
64c4757e | 3 | * |
e736b623 | 4 | * Copyright (C) 2001-2009 Neil Brown <neilb@suse.de> |
64c4757e NB |
5 | * |
6 | * | |
7 | * This program is free software; you can redistribute it and/or modify | |
8 | * it under the terms of the GNU General Public License as published by | |
9 | * the Free Software Foundation; either version 2 of the License, or | |
10 | * (at your option) any later version. | |
11 | * | |
12 | * This program is distributed in the hope that it will be useful, | |
13 | * but WITHOUT ANY WARRANTY; without even the implied warranty of | |
14 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
15 | * GNU General Public License for more details. | |
16 | * | |
17 | * You should have received a copy of the GNU General Public License | |
18 | * along with this program; if not, write to the Free Software | |
19 | * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA | |
20 | * | |
21 | * Author: Neil Brown | |
e736b623 | 22 | * Email: <neilb@suse.de> |
64c4757e NB |
23 | */ |
24 | ||
9a9dab36 | 25 | #include "mdadm.h" |
41a3b72a | 26 | #include <ctype.h> |
64c4757e | 27 | |
624920bb NB |
28 | static int name_matches(char *found, char *required, char *homehost) |
29 | { | |
30 | /* See if the name found matches the required name, possibly | |
31 | * prefixed with 'homehost' | |
32 | */ | |
33 | char fnd[33]; | |
34 | ||
35 | strncpy(fnd, found, 32); | |
36 | fnd[32] = 0; | |
37 | if (strcmp(found, required)==0) | |
38 | return 1; | |
39 | if (homehost) { | |
40 | int l = strlen(homehost); | |
41 | if (l < 32 && fnd[l] == ':' && | |
42 | strcmp(fnd+l+1, required)==0) | |
43 | return 1; | |
44 | } | |
45 | return 0; | |
46 | } | |
47 | ||
9008ed1c | 48 | static int is_member_busy(char *metadata_version) |
2de8884f DW |
49 | { |
50 | /* check if the given member array is active */ | |
51 | struct mdstat_ent *mdstat = mdstat_read(1, 0); | |
52 | struct mdstat_ent *ent; | |
53 | int busy = 0; | |
54 | ||
55 | for (ent = mdstat; ent; ent = ent->next) { | |
56 | if (ent->metadata_version == NULL) | |
57 | continue; | |
58 | if (strncmp(ent->metadata_version, "external:", 9) != 0) | |
59 | continue; | |
60 | if (!is_subarray(&ent->metadata_version[9])) | |
61 | continue; | |
62 | /* Skip first char - it can be '/' or '-' */ | |
63 | if (strcmp(&ent->metadata_version[10], metadata_version+1) == 0) { | |
64 | busy = 1; | |
65 | break; | |
66 | } | |
67 | } | |
68 | free_mdstat(mdstat); | |
69 | ||
70 | return busy; | |
71 | } | |
72 | ||
7f91af49 | 73 | int Assemble(struct supertype *st, char *mddev, |
8aec876d | 74 | mddev_ident_t ident, |
06b0d786 | 75 | mddev_dev_t devlist, char *backup_file, |
64c4757e | 76 | int readonly, int runstop, |
0ac91628 | 77 | char *update, char *homehost, int require_homehost, |
64c4757e NB |
78 | int verbose, int force) |
79 | { | |
80 | /* | |
52826846 NB |
81 | * The task of Assemble is to find a collection of |
82 | * devices that should (according to their superblocks) | |
83 | * form an array, and to give this collection to the MD driver. | |
84 | * In Linux-2.4 and later, this involves submitting a | |
64c4757e NB |
85 | * SET_ARRAY_INFO ioctl with no arg - to prepare |
86 | * the array - and then submit a number of | |
87 | * ADD_NEW_DISK ioctls to add disks into | |
88 | * the array. Finally RUN_ARRAY might | |
89 | * be submitted to start the array. | |
90 | * | |
91 | * Much of the work of Assemble is in finding and/or | |
92 | * checking the disks to make sure they look right. | |
93 | * | |
4b1ac34b | 94 | * If mddev is not set, then scan must be set and we |
64c4757e NB |
95 | * read through the config file for dev+uuid mapping |
96 | * We recurse, setting mddev, for each device that | |
97 | * - isn't running | |
4b1ac34b | 98 | * - has a valid uuid (or any uuid if !uuidset) |
64c4757e NB |
99 | * |
100 | * If mddev is set, we try to determine state of md. | |
101 | * check version - must be at least 0.90.0 | |
102 | * check kernel version. must be at least 2.4. | |
103 | * If not, we can possibly fall back on START_ARRAY | |
104 | * Try to GET_ARRAY_INFO. | |
105 | * If possible, give up | |
106 | * If not, try to STOP_ARRAY just to make sure | |
107 | * | |
108 | * If !uuidset and scan, look in conf-file for uuid | |
109 | * If not found, give up | |
b8a8ccf9 | 110 | * If !devlist and scan and uuidset, get list of devs from conf-file |
64c4757e NB |
111 | * |
112 | * For each device: | |
113 | * Check superblock - discard if bad | |
114 | * Check uuid (set if we don't have one) - discard if no match | |
5787fa49 | 115 | * Check superblock similarity if we have a superblock - discard if different |
4b1ac34b | 116 | * Record events, devicenum |
64c4757e | 117 | * This should give us a list of devices for the array |
4b1ac34b | 118 | * We should collect the most recent event number |
64c4757e NB |
119 | * |
120 | * Count disks with recent enough event count | |
121 | * While force && !enough disks | |
122 | * Choose newest rejected disks, update event count | |
123 | * mark clean and rewrite superblock | |
124 | * If recent kernel: | |
125 | * SET_ARRAY_INFO | |
126 | * foreach device with recent events : ADD_NEW_DISK | |
127 | * if runstop == 1 || "enough" disks and runstop==0 -> RUN_ARRAY | |
128 | * If old kernel: | |
129 | * Check the device numbers in superblock are right | |
130 | * update superblock if any changes | |
131 | * START_ARRAY | |
132 | * | |
133 | */ | |
c30e5369 N |
134 | int mdfd; |
135 | int clean; | |
f05641cf N |
136 | int auto_assem = (mddev == NULL && !ident->uuid_set && |
137 | ident->super_minor == UnSet && ident->name[0] == 0 | |
aa7c284c | 138 | && (ident->container == NULL || ident->member == NULL)); |
64c4757e | 139 | int old_linux = 0; |
c30e5369 | 140 | int vers = vers; /* Keep gcc quite - it really is initialised */ |
64c4757e NB |
141 | struct { |
142 | char *devname; | |
213ee40b NB |
143 | int uptodate; /* set once we decide that this device is as |
144 | * recent as everything else in the array. | |
145 | */ | |
146 | struct mdinfo i; | |
5787fa49 | 147 | } *devices; |
56eedc1a | 148 | int *best = NULL; /* indexed by raid_disk */ |
f21e18ca | 149 | int bestcnt = 0; |
98c6faba | 150 | int devcnt = 0; |
1ff98339 | 151 | unsigned int okcnt, sparecnt, rebuilding_cnt; |
98c6faba | 152 | unsigned int req_cnt; |
f21e18ca | 153 | int i; |
64c4757e | 154 | int most_recent = 0; |
cd29a5c8 | 155 | int chosen_drive; |
52826846 | 156 | int change = 0; |
cd29a5c8 | 157 | int inargv = 0; |
52437b4f | 158 | int report_missmatch; |
bf4fb153 | 159 | int bitmap_done; |
7f91af49 N |
160 | int start_partial_ok = (runstop >= 0) && |
161 | (force || devlist==NULL || auto_assem); | |
98c6faba | 162 | unsigned int num_devs; |
5787fa49 | 163 | mddev_dev_t tmpdev; |
4b1ac34b | 164 | struct mdinfo info; |
98dbd966 | 165 | struct mdinfo *content = NULL; |
265e0f17 | 166 | char *avail; |
308e1801 | 167 | int nextspare = 0; |
197e3eb6 | 168 | char *name = NULL; |
69207ff6 | 169 | int trustworthy; |
a04d5763 | 170 | char chosen_name[1024]; |
8a46fe84 | 171 | |
682c7051 | 172 | if (get_linux_version() < 2004000) |
64c4757e NB |
173 | old_linux = 1; |
174 | ||
64c4757e | 175 | /* |
52826846 NB |
176 | * If any subdevs are listed, then any that don't |
177 | * match ident are discarded. Remainder must all match and | |
178 | * become the array. | |
179 | * If no subdevs, then we scan all devices in the config file, but | |
180 | * there must be something in the identity | |
64c4757e | 181 | */ |
64c4757e | 182 | |
cd29a5c8 | 183 | if (!devlist && |
52826846 | 184 | ident->uuid_set == 0 && |
f21e18ca | 185 | (ident->super_minor < 0 || ident->super_minor == UnSet) && |
e0fe762a N |
186 | ident->name[0] == 0 && |
187 | (ident->container == NULL || ident->member == NULL) && | |
52826846 NB |
188 | ident->devices == NULL) { |
189 | fprintf(stderr, Name ": No identity information available for %s - cannot assemble.\n", | |
8a46fe84 | 190 | mddev ? mddev : "further assembly"); |
52826846 | 191 | return 1; |
64c4757e | 192 | } |
71d60c48 | 193 | |
cd29a5c8 | 194 | if (devlist == NULL) |
8aec876d | 195 | devlist = conf_get_devs(); |
7f91af49 | 196 | else if (mddev) |
da6b5ca9 | 197 | inargv = 1; |
64c4757e | 198 | |
52437b4f | 199 | report_missmatch = ((inargv && verbose >= 0) || verbose > 0); |
60e1bc1a | 200 | try_again: |
c30e5369 N |
201 | /* We come back here when doing auto-assembly and attempting some |
202 | * set of devices failed. Those are now marked as ->used==2 and | |
203 | * we ignore them and try again | |
204 | */ | |
60e1bc1a | 205 | |
5787fa49 NB |
206 | tmpdev = devlist; num_devs = 0; |
207 | while (tmpdev) { | |
da6b5ca9 NB |
208 | if (tmpdev->used) |
209 | tmpdev->used = 2; | |
210 | else | |
211 | num_devs++; | |
5787fa49 NB |
212 | tmpdev = tmpdev->next; |
213 | } | |
5787fa49 NB |
214 | devices = malloc(num_devs * sizeof(*devices)); |
215 | ||
82d9eba6 | 216 | if (!st && ident->st) st = ident->st; |
64c4757e | 217 | |
dab6685f | 218 | if (verbose>0) |
82b27616 | 219 | fprintf(stderr, Name ": looking for devices for %s\n", |
8a46fe84 | 220 | mddev ? mddev : "further assembly"); |
82b27616 | 221 | |
811e6cbe NB |
222 | /* first walk the list of devices to find a consistent set |
223 | * that match the criterea, if that is possible. | |
c30e5369 | 224 | * We flag the ones we like with 'used'. |
811e6cbe NB |
225 | */ |
226 | for (tmpdev = devlist; | |
227 | tmpdev; | |
228 | tmpdev = tmpdev->next) { | |
229 | char *devname = tmpdev->devname; | |
64c4757e NB |
230 | int dfd; |
231 | struct stat stb; | |
3da92f27 | 232 | struct supertype *tst = dup_super(st); |
4e8d9f0a | 233 | struct dev_policy *pol = NULL; |
52826846 | 234 | |
da6b5ca9 NB |
235 | if (tmpdev->used > 1) continue; |
236 | ||
52826846 | 237 | if (ident->devices && |
56eedc1a | 238 | !match_oneof(ident->devices, devname)) { |
52437b4f | 239 | if (report_missmatch) |
56eedc1a | 240 | fprintf(stderr, Name ": %s is not one of %s\n", devname, ident->devices); |
52826846 | 241 | continue; |
56eedc1a | 242 | } |
4b1ac34b | 243 | |
8b0dabea | 244 | dfd = dev_open(devname, O_RDONLY|O_EXCL); |
64c4757e | 245 | if (dfd < 0) { |
52437b4f | 246 | if (report_missmatch) |
682c7051 | 247 | fprintf(stderr, Name ": cannot open device %s: %s\n", |
64c4757e | 248 | devname, strerror(errno)); |
da6b5ca9 | 249 | tmpdev->used = 2; |
52826846 NB |
250 | } else if (fstat(dfd, &stb)< 0) { |
251 | /* Impossible! */ | |
252 | fprintf(stderr, Name ": fstat failed for %s: %s\n", | |
253 | devname, strerror(errno)); | |
da6b5ca9 | 254 | tmpdev->used = 2; |
cd29a5c8 NB |
255 | } else if ((stb.st_mode & S_IFMT) != S_IFBLK) { |
256 | fprintf(stderr, Name ": %s is not a block device.\n", | |
52826846 | 257 | devname); |
da6b5ca9 | 258 | tmpdev->used = 2; |
82d9eba6 | 259 | } else if (!tst && (tst = guess_super(dfd)) == NULL) { |
52437b4f | 260 | if (report_missmatch) |
da6b5ca9 NB |
261 | fprintf(stderr, Name ": no recogniseable superblock on %s\n", |
262 | devname); | |
263 | tmpdev->used = 2; | |
1ff98339 N |
264 | } else if (tst->ss->load_super(tst,dfd, NULL)) { |
265 | if (report_missmatch) | |
0f22b998 N |
266 | fprintf(stderr, Name ": no RAID superblock on %s\n", |
267 | devname); | |
268 | } else if (tst->ss->compare_super == NULL) { | |
269 | if (report_missmatch) | |
270 | fprintf(stderr, Name ": Cannot assemble %s metadata on %s\n", | |
271 | tst->ss->name, devname); | |
272 | tst->ss->free_super(tst); | |
273 | tmpdev->used = 2; | |
31015d57 | 274 | } else if (auto_assem && st == NULL && |
4e8d9f0a | 275 | !conf_test_metadata(tst->ss->name, (pol = devnum_policy(stb.st_rdev)), |
d1d3482b | 276 | tst->ss->match_home(tst, homehost) == 1)) { |
31015d57 N |
277 | if (report_missmatch) |
278 | fprintf(stderr, Name ": %s has metadata type %s for which " | |
279 | "auto-assembly is disabled\n", | |
280 | devname, tst->ss->name); | |
e5c99c08 | 281 | tst->ss->free_super(tst); |
31015d57 | 282 | tmpdev->used = 2; |
52826846 | 283 | } else { |
98dbd966 DW |
284 | content = &info; |
285 | memset(content, 0, sizeof(*content)); | |
286 | tst->ss->getinfo_super(tst, content); | |
64c4757e | 287 | } |
c06487ce | 288 | if (dfd >= 0) close(dfd); |
52826846 | 289 | |
9008ed1c N |
290 | if (tst && tst->sb && tst->ss->container_content |
291 | && tst->loaded_container) { | |
292 | /* tmpdev is a container. We need to be either | |
293 | * looking for a member, or auto-assembling | |
294 | */ | |
295 | if (st) { | |
296 | /* already found some components, this cannot | |
297 | * be another one. | |
298 | */ | |
299 | if (report_missmatch) | |
300 | fprintf(stderr, Name ": %s is a container, but we are looking for components\n", | |
301 | devname); | |
302 | goto loop; | |
303 | } | |
304 | ||
305 | if (ident->container) { | |
306 | if (ident->container[0] == '/' && | |
307 | !same_dev(ident->container, devname)) { | |
308 | if (report_missmatch) | |
309 | fprintf(stderr, Name ": %s is not the container required (%s)\n", | |
310 | devname, ident->container); | |
311 | goto loop; | |
312 | } | |
313 | if (ident->container[0] != '/') { | |
314 | /* we have a uuid */ | |
315 | int uuid[4]; | |
316 | if (!parse_uuid(ident->container, uuid) || | |
317 | !same_uuid(content->uuid, uuid, tst->ss->swapuuid)) { | |
318 | if (report_missmatch) | |
319 | fprintf(stderr, Name ": %s has wrong UUID to be required container\n", | |
320 | devname); | |
321 | goto loop; | |
322 | } | |
323 | } | |
324 | } | |
325 | /* It is worth looking inside this container. | |
326 | */ | |
7636b5a8 N |
327 | if (verbose > 0) |
328 | fprintf(stderr, Name ": looking in container %s\n", | |
329 | devname); | |
9008ed1c N |
330 | next_member: |
331 | if (tmpdev->content) | |
332 | content = tmpdev->content; | |
333 | else | |
334 | content = tst->ss->container_content(tst); | |
3ef383aa DW |
335 | if (!content) |
336 | goto loop; /* empty container */ | |
9008ed1c N |
337 | |
338 | tmpdev->content = content->next; | |
339 | if (tmpdev->content == NULL) | |
f7ad3ccc | 340 | tmpdev->used = 2; |
9008ed1c N |
341 | |
342 | } else if (ident->container || ident->member) { | |
343 | /* No chance of this matching if we don't have | |
344 | * a container */ | |
345 | if (report_missmatch) | |
346 | fprintf(stderr, Name "%s is not a container, and one is required.\n", | |
347 | devname); | |
348 | goto loop; | |
349 | } | |
350 | ||
838acbc2 | 351 | if (ident->uuid_set && (!update || strcmp(update, "uuid")!= 0) && |
3da92f27 | 352 | (!tst || !tst->sb || |
98dbd966 | 353 | same_uuid(content->uuid, ident->uuid, tst->ss->swapuuid)==0)) { |
52437b4f | 354 | if (report_missmatch) |
52826846 NB |
355 | fprintf(stderr, Name ": %s has wrong uuid.\n", |
356 | devname); | |
df37ffc0 | 357 | goto loop; |
82b27616 | 358 | } |
c4f12c13 | 359 | if (ident->name[0] && (!update || strcmp(update, "name")!= 0) && |
3da92f27 | 360 | (!tst || !tst->sb || |
98dbd966 | 361 | name_matches(content->name, ident->name, homehost)==0)) { |
52437b4f | 362 | if (report_missmatch) |
947fd4dd NB |
363 | fprintf(stderr, Name ": %s has wrong name.\n", |
364 | devname); | |
df37ffc0 | 365 | goto loop; |
947fd4dd | 366 | } |
98c6faba | 367 | if (ident->super_minor != UnSet && |
3da92f27 | 368 | (!tst || !tst->sb || |
98dbd966 | 369 | ident->super_minor != content->array.md_minor)) { |
52437b4f | 370 | if (report_missmatch) |
52826846 | 371 | fprintf(stderr, Name ": %s has wrong super-minor.\n", |
64c4757e | 372 | devname); |
df37ffc0 | 373 | goto loop; |
64c4757e | 374 | } |
98c6faba | 375 | if (ident->level != UnSet && |
3da92f27 | 376 | (!tst || !tst->sb || |
98dbd966 | 377 | ident->level != content->array.level)) { |
52437b4f | 378 | if (report_missmatch) |
cd29a5c8 NB |
379 | fprintf(stderr, Name ": %s has wrong raid level.\n", |
380 | devname); | |
df37ffc0 | 381 | goto loop; |
cd29a5c8 | 382 | } |
98c6faba | 383 | if (ident->raid_disks != UnSet && |
3da92f27 | 384 | (!tst || !tst->sb || |
98dbd966 | 385 | ident->raid_disks!= content->array.raid_disks)) { |
52437b4f | 386 | if (report_missmatch) |
cd29a5c8 NB |
387 | fprintf(stderr, Name ": %s requires wrong number of drives.\n", |
388 | devname); | |
df37ffc0 | 389 | goto loop; |
cd29a5c8 | 390 | } |
c30e5369 | 391 | if (auto_assem) { |
3da92f27 | 392 | if (tst == NULL || tst->sb == NULL) |
da6b5ca9 | 393 | continue; |
da6b5ca9 | 394 | } |
83b6208e | 395 | /* If we are this far, then we are nearly commited to this device. |
52826846 | 396 | * If the super_block doesn't exist, or doesn't match others, |
83b6208e NB |
397 | * then we probably cannot continue |
398 | * However if one of the arrays is for the homehost, and | |
399 | * the other isn't that can disambiguate. | |
52826846 | 400 | */ |
52826846 | 401 | |
3da92f27 | 402 | if (!tst || !tst->sb) { |
52826846 NB |
403 | fprintf(stderr, Name ": %s has no superblock - assembly aborted\n", |
404 | devname); | |
ddd1a492 NB |
405 | if (st) |
406 | st->ss->free_super(st); | |
4e8d9f0a | 407 | dev_policy_free(pol); |
52826846 NB |
408 | return 1; |
409 | } | |
838acbc2 | 410 | |
9008ed1c N |
411 | if (tst && tst->sb && tst->ss->container_content |
412 | && tst->loaded_container) { | |
413 | /* we have the one container we need, don't keep | |
414 | * looking. If the chosen member is active, skip. | |
415 | */ | |
416 | if (is_member_busy(content->text_version)) { | |
f7ad3ccc N |
417 | if (report_missmatch) |
418 | fprintf(stderr, Name ": member %s in %s is already assembled\n", | |
419 | content->text_version, | |
420 | devname); | |
8a0a0ded N |
421 | skip: |
422 | if (tmpdev->content) | |
423 | goto next_member; | |
f7ad3ccc N |
424 | tst->ss->free_super(tst); |
425 | tst = NULL; | |
426 | content = NULL; | |
9008ed1c N |
427 | if (auto_assem) |
428 | goto loop; | |
4e8d9f0a | 429 | dev_policy_free(pol); |
9008ed1c N |
430 | return 1; |
431 | } | |
8a0a0ded N |
432 | if (ident->member && ident->member[0]) { |
433 | char *s = strchr(content->text_version+1, '/'); | |
434 | if (s == NULL) { | |
435 | fprintf(stderr, Name ": badly formatted version: %s\n", | |
436 | content->text_version); | |
437 | goto skip; | |
438 | } | |
439 | if (strcmp(ident->member, s+1) != 0) { | |
440 | if (report_missmatch) | |
441 | fprintf(stderr, | |
442 | Name ": skipping wrong member %s\n", | |
443 | content->text_version); | |
444 | goto skip; | |
445 | } | |
446 | } | |
9008ed1c | 447 | st = tst; tst = NULL; |
4c1c3ad8 | 448 | if (!auto_assem && inargv && tmpdev->next != NULL) { |
9008ed1c N |
449 | fprintf(stderr, Name ": %s is a container, but is not " |
450 | "only device given: confused and aborting\n", | |
451 | devname); | |
452 | st->ss->free_super(st); | |
4e8d9f0a | 453 | dev_policy_free(pol); |
9008ed1c N |
454 | return 1; |
455 | } | |
7636b5a8 N |
456 | if (verbose > 0) |
457 | fprintf(stderr, Name ": found match on member %s in %s\n", | |
458 | content->text_version, devname); | |
9008ed1c N |
459 | break; |
460 | } | |
83b6208e | 461 | if (st == NULL) |
3da92f27 NB |
462 | st = dup_super(tst); |
463 | if (st->minor_version == -1) | |
464 | st->minor_version = tst->minor_version; | |
83b6208e NB |
465 | if (st->ss != tst->ss || |
466 | st->minor_version != tst->minor_version || | |
64557c33 | 467 | st->ss->compare_super(st, tst) != 0) { |
83b6208e | 468 | /* Some mismatch. If exactly one array matches this host, |
da6b5ca9 NB |
469 | * we can resolve on that one. |
470 | * Or, if we are auto assembling, we just ignore the second | |
471 | * for now. | |
83b6208e | 472 | */ |
c30e5369 | 473 | if (auto_assem) |
df37ffc0 | 474 | goto loop; |
83b6208e | 475 | if (homehost) { |
3da92f27 NB |
476 | int first = st->ss->match_home(st, homehost); |
477 | int last = tst->ss->match_home(tst, homehost); | |
9362c1c8 N |
478 | if (first != last && |
479 | (first == 1 || last == 1)) { | |
83b6208e NB |
480 | /* We can do something */ |
481 | if (first) {/* just ignore this one */ | |
52437b4f | 482 | if (report_missmatch) |
83b6208e NB |
483 | fprintf(stderr, Name ": %s misses out due to wrong homehost\n", |
484 | devname); | |
df37ffc0 | 485 | goto loop; |
83b6208e NB |
486 | } else { /* reject all those sofar */ |
487 | mddev_dev_t td; | |
52437b4f | 488 | if (report_missmatch) |
83b6208e NB |
489 | fprintf(stderr, Name ": %s overrides previous devices due to good homehost\n", |
490 | devname); | |
491 | for (td=devlist; td != tmpdev; td=td->next) | |
492 | if (td->used == 1) | |
493 | td->used = 0; | |
494 | tmpdev->used = 1; | |
df37ffc0 | 495 | goto loop; |
83b6208e NB |
496 | } |
497 | } | |
498 | } | |
52826846 NB |
499 | fprintf(stderr, Name ": superblock on %s doesn't match others - assembly aborted\n", |
500 | devname); | |
3da92f27 NB |
501 | tst->ss->free_super(tst); |
502 | st->ss->free_super(st); | |
4e8d9f0a | 503 | dev_policy_free(pol); |
52826846 | 504 | return 1; |
64c4757e NB |
505 | } |
506 | ||
811e6cbe | 507 | tmpdev->used = 1; |
df37ffc0 NB |
508 | |
509 | loop: | |
4e8d9f0a N |
510 | dev_policy_free(pol); |
511 | pol = NULL; | |
9008ed1c N |
512 | if (tmpdev->content) |
513 | goto next_member; | |
3d2b16e7 NB |
514 | if (tst) |
515 | tst->ss->free_super(tst); | |
811e6cbe NB |
516 | } |
517 | ||
98dbd966 | 518 | if (!st || !st->sb || !content) |
c30e5369 N |
519 | return 2; |
520 | ||
05833051 | 521 | /* Now need to open the array device. Use create_mddev */ |
98dbd966 DW |
522 | if (content == &info) |
523 | st->ss->getinfo_super(st, content); | |
3d2c4fc7 | 524 | |
69207ff6 | 525 | trustworthy = FOREIGN; |
05833051 | 526 | name = content->name; |
745f72f6 N |
527 | switch (st->ss->match_home(st, homehost) |
528 | ?: st->ss->match_home(st, "any")) { | |
69207ff6 N |
529 | case 1: |
530 | trustworthy = LOCAL; | |
98dbd966 | 531 | name = strchr(content->name, ':'); |
69207ff6 N |
532 | if (name) |
533 | name++; | |
3d2c4fc7 | 534 | else |
98dbd966 | 535 | name = content->name; |
69207ff6 | 536 | break; |
c30e5369 | 537 | } |
05833051 | 538 | if (!auto_assem) |
aa7c284c | 539 | /* If the array is listed in mdadm.conf or on |
ac2ecf55 N |
540 | * command line, then we trust the name |
541 | * even if the array doesn't look local | |
542 | */ | |
543 | trustworthy = LOCAL; | |
544 | ||
05833051 | 545 | if (name[0] == 0 && |
98dbd966 DW |
546 | content->array.level == LEVEL_CONTAINER) { |
547 | name = content->text_version; | |
a4bc1720 N |
548 | trustworthy = METADATA; |
549 | } | |
0ac91628 N |
550 | |
551 | if (name[0] && trustworthy != LOCAL && | |
552 | ! require_homehost && | |
553 | conf_name_is_free(name)) | |
554 | trustworthy = LOCAL; | |
555 | ||
7cdc0872 N |
556 | if (trustworthy == LOCAL && |
557 | strchr(name, ':')) | |
558 | /* Ignore 'host:' prefix of name */ | |
559 | name = strchr(name, ':')+1; | |
560 | ||
a04d5763 N |
561 | mdfd = create_mddev(mddev, name, ident->autof, trustworthy, |
562 | chosen_name); | |
c30e5369 N |
563 | if (mdfd < 0) { |
564 | st->ss->free_super(st); | |
565 | free(devices); | |
566 | if (auto_assem) | |
60e1bc1a | 567 | goto try_again; |
c30e5369 N |
568 | return 1; |
569 | } | |
a04d5763 | 570 | mddev = chosen_name; |
c30e5369 N |
571 | vers = md_get_version(mdfd); |
572 | if (vers < 9000) { | |
573 | fprintf(stderr, Name ": Assemble requires driver version 0.90.0 or later.\n" | |
574 | " Upgrade your kernel or try --build\n"); | |
575 | close(mdfd); | |
576 | return 1; | |
577 | } | |
66afdfa9 | 578 | if (mddev_busy(fd2devnum(mdfd))) { |
c30e5369 N |
579 | fprintf(stderr, Name ": %s already active, cannot restart it!\n", |
580 | mddev); | |
581 | for (tmpdev = devlist ; | |
582 | tmpdev && tmpdev->used != 1; | |
583 | tmpdev = tmpdev->next) | |
584 | ; | |
585 | if (tmpdev && auto_assem) | |
586 | fprintf(stderr, Name ": %s needed for %s...\n", | |
587 | mddev, tmpdev->devname); | |
588 | close(mdfd); | |
589 | mdfd = -3; | |
590 | st->ss->free_super(st); | |
591 | free(devices); | |
592 | if (auto_assem) | |
593 | goto try_again; | |
594 | return 1; | |
8a46fe84 | 595 | } |
c30e5369 | 596 | ioctl(mdfd, STOP_ARRAY, NULL); /* just incase it was started but has no content */ |
8a46fe84 | 597 | |
9008ed1c N |
598 | #ifndef MDASSEMBLE |
599 | if (content != &info) { | |
600 | /* This is a member of a container. Try starting the array. */ | |
601 | return assemble_container_content(st, mdfd, content, runstop, | |
602 | chosen_name, verbose); | |
603 | } | |
604 | #endif | |
811e6cbe | 605 | /* Ok, no bad inconsistancy, we can try updating etc */ |
bf4fb153 | 606 | bitmap_done = 0; |
6e46bf34 | 607 | content->update_private = NULL; |
da6b5ca9 | 608 | for (tmpdev = devlist; tmpdev; tmpdev=tmpdev->next) if (tmpdev->used == 1) { |
811e6cbe NB |
609 | char *devname = tmpdev->devname; |
610 | struct stat stb; | |
5787fa49 | 611 | /* looks like a good enough match to update the super block if needed */ |
d1f1011b | 612 | #ifndef MDASSEMBLE |
5787fa49 | 613 | if (update) { |
811e6cbe | 614 | int dfd; |
4b1ac34b NB |
615 | /* prepare useful information in info structures */ |
616 | struct stat stb2; | |
3da92f27 | 617 | struct supertype *tst; |
4b1ac34b | 618 | fstat(mdfd, &stb2); |
7d99579f NB |
619 | |
620 | if (strcmp(update, "uuid")==0 && | |
621 | !ident->uuid_set) { | |
622 | int rfd; | |
623 | if ((rfd = open("/dev/urandom", O_RDONLY)) < 0 || | |
624 | read(rfd, ident->uuid, 16) != 16) { | |
625 | *(__u32*)(ident->uuid) = random(); | |
626 | *(__u32*)(ident->uuid+1) = random(); | |
627 | *(__u32*)(ident->uuid+2) = random(); | |
628 | *(__u32*)(ident->uuid+3) = random(); | |
629 | } | |
630 | if (rfd >= 0) close(rfd); | |
7d99579f | 631 | } |
811e6cbe NB |
632 | dfd = dev_open(devname, O_RDWR|O_EXCL); |
633 | ||
0430ed48 NB |
634 | remove_partitions(dfd); |
635 | ||
3da92f27 | 636 | tst = dup_super(st); |
9f22b13f N |
637 | if (dfd < 0 || tst->ss->load_super(tst, dfd, NULL) != 0) { |
638 | fprintf(stderr, Name ": cannot re-read metadata from %s - aborting\n", | |
639 | devname); | |
640 | if (dfd >= 0) | |
641 | close(dfd); | |
642 | close(mdfd); | |
643 | return 1; | |
644 | } | |
98dbd966 | 645 | tst->ss->getinfo_super(tst, content); |
811e6cbe | 646 | |
98dbd966 DW |
647 | memcpy(content->uuid, ident->uuid, 16); |
648 | strcpy(content->name, ident->name); | |
649 | content->array.md_minor = minor(stb2.st_rdev); | |
811e6cbe | 650 | |
98dbd966 | 651 | tst->ss->update_super(tst, content, update, |
3da92f27 NB |
652 | devname, verbose, |
653 | ident->uuid_set, homehost); | |
e5eac01f NB |
654 | if (strcmp(update, "uuid")==0 && |
655 | !ident->uuid_set) { | |
656 | ident->uuid_set = 1; | |
98dbd966 | 657 | memcpy(ident->uuid, content->uuid, 16); |
e5eac01f | 658 | } |
b8a8ccf9 | 659 | if (dfd < 0) |
5787fa49 NB |
660 | fprintf(stderr, Name ": Cannot open %s for superblock update\n", |
661 | devname); | |
3da92f27 | 662 | else if (tst->ss->store_super(tst, dfd)) |
5787fa49 NB |
663 | fprintf(stderr, Name ": Could not re-write superblock on %s.\n", |
664 | devname); | |
665 | if (dfd >= 0) | |
666 | close(dfd); | |
8131b493 NB |
667 | |
668 | if (strcmp(update, "uuid")==0 && | |
bf4fb153 | 669 | ident->bitmap_fd >= 0 && !bitmap_done) { |
3da92f27 | 670 | if (bitmap_update_uuid(ident->bitmap_fd, |
98dbd966 | 671 | content->uuid, |
3da92f27 | 672 | tst->ss->swapuuid) != 0) |
bf4fb153 NB |
673 | fprintf(stderr, Name ": Could not update uuid on external bitmap.\n"); |
674 | else | |
675 | bitmap_done = 1; | |
676 | } | |
3da92f27 | 677 | tst->ss->free_super(tst); |
d1f1011b NB |
678 | } else |
679 | #endif | |
680 | { | |
30e1b9a5 | 681 | struct supertype *tst = dup_super(st); |
da6b5ca9 NB |
682 | int dfd; |
683 | dfd = dev_open(devname, O_RDWR|O_EXCL); | |
684 | ||
0430ed48 NB |
685 | remove_partitions(dfd); |
686 | ||
9f22b13f N |
687 | if (dfd < 0 || tst->ss->load_super(tst, dfd, NULL) != 0) { |
688 | fprintf(stderr, Name ": cannot re-read metadata from %s - aborting\n", | |
689 | devname); | |
690 | if (dfd >= 0) | |
691 | close(dfd); | |
692 | close(mdfd); | |
693 | return 1; | |
694 | } | |
98dbd966 | 695 | tst->ss->getinfo_super(tst, content); |
3da92f27 | 696 | tst->ss->free_super(tst); |
da6b5ca9 | 697 | close(dfd); |
5787fa49 NB |
698 | } |
699 | ||
811e6cbe NB |
700 | stat(devname, &stb); |
701 | ||
dab6685f | 702 | if (verbose > 0) |
cd29a5c8 | 703 | fprintf(stderr, Name ": %s is identified as a member of %s, slot %d.\n", |
98dbd966 | 704 | devname, mddev, content->disk.raid_disk); |
64c4757e | 705 | devices[devcnt].devname = devname; |
64c4757e | 706 | devices[devcnt].uptodate = 0; |
98dbd966 | 707 | devices[devcnt].i = *content; |
213ee40b NB |
708 | devices[devcnt].i.disk.major = major(stb.st_rdev); |
709 | devices[devcnt].i.disk.minor = minor(stb.st_rdev); | |
64c4757e | 710 | if (most_recent < devcnt) { |
213ee40b NB |
711 | if (devices[devcnt].i.events |
712 | > devices[most_recent].i.events) | |
64c4757e NB |
713 | most_recent = devcnt; |
714 | } | |
df0d4ea0 | 715 | if (content->array.level == LEVEL_MULTIPATH) |
5787fa49 NB |
716 | /* with multipath, the raid_disk from the superblock is meaningless */ |
717 | i = devcnt; | |
718 | else | |
213ee40b | 719 | i = devices[devcnt].i.disk.raid_disk; |
308e1801 | 720 | if (i+1 == 0) { |
98dbd966 DW |
721 | if (nextspare < content->array.raid_disks) |
722 | nextspare = content->array.raid_disks; | |
308e1801 | 723 | i = nextspare++; |
08110d41 | 724 | } else { |
98dbd966 | 725 | if (i >= content->array.raid_disks && |
08110d41 NB |
726 | i >= nextspare) |
727 | nextspare = i+1; | |
308e1801 | 728 | } |
98c6faba | 729 | if (i < 10000) { |
56eedc1a | 730 | if (i >= bestcnt) { |
f21e18ca | 731 | int newbestcnt = i+10; |
56eedc1a | 732 | int *newbest = malloc(sizeof(int)*newbestcnt); |
f21e18ca | 733 | int c; |
56eedc1a NB |
734 | for (c=0; c < newbestcnt; c++) |
735 | if (c < bestcnt) | |
736 | newbest[c] = best[c]; | |
737 | else | |
738 | newbest[c] = -1; | |
739 | if (best)free(best); | |
740 | best = newbest; | |
741 | bestcnt = newbestcnt; | |
742 | } | |
6a255b69 | 743 | if (best[i] >=0 && |
213ee40b NB |
744 | devices[best[i]].i.events |
745 | == devices[devcnt].i.events | |
746 | && (devices[best[i]].i.disk.minor | |
747 | != devices[devcnt].i.disk.minor) | |
b8ac1967 | 748 | && st->ss == &super0 |
98dbd966 | 749 | && content->array.level != LEVEL_MULTIPATH) { |
6a255b69 NB |
750 | /* two different devices with identical superblock. |
751 | * Could be a mis-detection caused by overlapping | |
752 | * partitions. fail-safe. | |
753 | */ | |
754 | fprintf(stderr, Name ": WARNING %s and %s appear" | |
755 | " to have very similar superblocks.\n" | |
756 | " If they are really different, " | |
757 | "please --zero the superblock on one\n" | |
d2df86e0 NB |
758 | " If they are the same or overlap," |
759 | " please remove one from %s.\n", | |
760 | devices[best[i]].devname, devname, | |
761 | inargv ? "the list" : | |
762 | "the\n DEVICE list in mdadm.conf" | |
763 | ); | |
7f91af49 | 764 | close(mdfd); |
6a255b69 NB |
765 | return 1; |
766 | } | |
52826846 | 767 | if (best[i] == -1 |
213ee40b NB |
768 | || (devices[best[i]].i.events |
769 | < devices[devcnt].i.events)) | |
52826846 | 770 | best[i] = devcnt; |
56eedc1a | 771 | } |
64c4757e | 772 | devcnt++; |
df37ffc0 | 773 | } |
6e46bf34 DW |
774 | free(content->update_private); |
775 | content->update_private = NULL; | |
4b1ac34b | 776 | |
64c4757e | 777 | if (devcnt == 0) { |
682c7051 | 778 | fprintf(stderr, Name ": no devices found for %s\n", |
64c4757e | 779 | mddev); |
3d2b16e7 NB |
780 | if (st) |
781 | st->ss->free_super(st); | |
7f91af49 | 782 | close(mdfd); |
64c4757e NB |
783 | return 1; |
784 | } | |
4b1ac34b | 785 | |
3d2b16e7 NB |
786 | if (update && strcmp(update, "byteorder")==0) |
787 | st->minor_version = 90; | |
788 | ||
98dbd966 DW |
789 | st->ss->getinfo_super(st, content); |
790 | clean = content->array.state & 1; | |
4b1ac34b | 791 | |
64c4757e NB |
792 | /* now we have some devices that might be suitable. |
793 | * I wonder how many | |
794 | */ | |
98dbd966 DW |
795 | avail = malloc(content->array.raid_disks); |
796 | memset(avail, 0, content->array.raid_disks); | |
64c4757e | 797 | okcnt = 0; |
52826846 | 798 | sparecnt=0; |
1ff98339 | 799 | rebuilding_cnt=0; |
f21e18ca | 800 | for (i=0; i< bestcnt; i++) { |
64c4757e | 801 | int j = best[i]; |
ee04451c NB |
802 | int event_margin = 1; /* always allow a difference of '1' |
803 | * like the kernel does | |
804 | */ | |
64c4757e | 805 | if (j < 0) continue; |
d013a55e NB |
806 | /* note: we ignore error flags in multipath arrays |
807 | * as they don't make sense | |
808 | */ | |
df0d4ea0 | 809 | if (content->array.level != LEVEL_MULTIPATH) |
f22385f9 | 810 | if (!(devices[j].i.disk.state & (1<<MD_DISK_ACTIVE))) { |
213ee40b NB |
811 | if (!(devices[j].i.disk.state |
812 | & (1<<MD_DISK_FAULTY))) | |
aa88f531 | 813 | sparecnt++; |
d013a55e | 814 | continue; |
aa88f531 | 815 | } |
213ee40b NB |
816 | if (devices[j].i.events+event_margin >= |
817 | devices[most_recent].i.events) { | |
64c4757e | 818 | devices[j].uptodate = 1; |
1ff98339 N |
819 | if (i < content->array.raid_disks) { |
820 | if (devices[j].i.recovery_start == MaxSector) { | |
821 | okcnt++; | |
822 | avail[i]=1; | |
823 | } else | |
824 | rebuilding_cnt++; | |
265e0f17 | 825 | } else |
52826846 | 826 | sparecnt++; |
64c4757e NB |
827 | } |
828 | } | |
98dbd966 DW |
829 | while (force && !enough(content->array.level, content->array.raid_disks, |
830 | content->array.layout, 1, | |
265e0f17 | 831 | avail, okcnt)) { |
64c4757e NB |
832 | /* Choose the newest best drive which is |
833 | * not up-to-date, update the superblock | |
834 | * and add it. | |
835 | */ | |
52826846 | 836 | int fd; |
3da92f27 | 837 | struct supertype *tst; |
f21e18ca | 838 | unsigned long long current_events; |
cd29a5c8 | 839 | chosen_drive = -1; |
f21e18ca | 840 | for (i = 0; i < content->array.raid_disks && i < bestcnt; i++) { |
52826846 NB |
841 | int j = best[i]; |
842 | if (j>=0 && | |
843 | !devices[j].uptodate && | |
921d9e16 | 844 | devices[j].i.recovery_start == MaxSector && |
52826846 | 845 | (chosen_drive < 0 || |
213ee40b NB |
846 | devices[j].i.events |
847 | > devices[chosen_drive].i.events)) | |
52826846 NB |
848 | chosen_drive = j; |
849 | } | |
850 | if (chosen_drive < 0) | |
851 | break; | |
213ee40b | 852 | current_events = devices[chosen_drive].i.events; |
c5a6f9a6 | 853 | add_another: |
dab6685f NB |
854 | if (verbose >= 0) |
855 | fprintf(stderr, Name ": forcing event count in %s(%d) from %d upto %d\n", | |
213ee40b NB |
856 | devices[chosen_drive].devname, |
857 | devices[chosen_drive].i.disk.raid_disk, | |
858 | (int)(devices[chosen_drive].i.events), | |
859 | (int)(devices[most_recent].i.events)); | |
8b0dabea | 860 | fd = dev_open(devices[chosen_drive].devname, O_RDWR|O_EXCL); |
52826846 NB |
861 | if (fd < 0) { |
862 | fprintf(stderr, Name ": Couldn't open %s for write - not updating\n", | |
863 | devices[chosen_drive].devname); | |
213ee40b | 864 | devices[chosen_drive].i.events = 0; |
52826846 NB |
865 | continue; |
866 | } | |
3da92f27 | 867 | tst = dup_super(st); |
60b435db | 868 | if (tst->ss->load_super(tst,fd, NULL)) { |
52826846 NB |
869 | close(fd); |
870 | fprintf(stderr, Name ": RAID superblock disappeared from %s - not updating.\n", | |
871 | devices[chosen_drive].devname); | |
213ee40b | 872 | devices[chosen_drive].i.events = 0; |
52826846 NB |
873 | continue; |
874 | } | |
98dbd966 DW |
875 | content->events = devices[most_recent].i.events; |
876 | tst->ss->update_super(tst, content, "force-one", | |
67a8c82d NB |
877 | devices[chosen_drive].devname, verbose, |
878 | 0, NULL); | |
4b1ac34b | 879 | |
3da92f27 | 880 | if (tst->ss->store_super(tst, fd)) { |
52826846 NB |
881 | close(fd); |
882 | fprintf(stderr, Name ": Could not re-write superblock on %s\n", | |
883 | devices[chosen_drive].devname); | |
213ee40b | 884 | devices[chosen_drive].i.events = 0; |
3da92f27 | 885 | tst->ss->free_super(tst); |
52826846 NB |
886 | continue; |
887 | } | |
888 | close(fd); | |
213ee40b | 889 | devices[chosen_drive].i.events = devices[most_recent].i.events; |
52826846 | 890 | devices[chosen_drive].uptodate = 1; |
265e0f17 | 891 | avail[chosen_drive] = 1; |
52826846 | 892 | okcnt++; |
3da92f27 | 893 | tst->ss->free_super(tst); |
c5a6f9a6 NB |
894 | |
895 | /* If there are any other drives of the same vintage, | |
896 | * add them in as well. We can't lose and we might gain | |
897 | */ | |
f21e18ca | 898 | for (i = 0; i < content->array.raid_disks && i < bestcnt ; i++) { |
c5a6f9a6 NB |
899 | int j = best[i]; |
900 | if (j >= 0 && | |
901 | !devices[j].uptodate && | |
213ee40b | 902 | devices[j].i.events == current_events) { |
c5a6f9a6 NB |
903 | chosen_drive = j; |
904 | goto add_another; | |
905 | } | |
906 | } | |
64c4757e | 907 | } |
52826846 NB |
908 | |
909 | /* Now we want to look at the superblock which the kernel will base things on | |
910 | * and compare the devices that we think are working with the devices that the | |
911 | * superblock thinks are working. | |
912 | * If there are differences and --force is given, then update this chosen | |
913 | * superblock. | |
914 | */ | |
cd29a5c8 | 915 | chosen_drive = -1; |
3da92f27 | 916 | st->ss->free_super(st); |
56eedc1a | 917 | for (i=0; chosen_drive < 0 && i<bestcnt; i++) { |
52826846 NB |
918 | int j = best[i]; |
919 | int fd; | |
4b1ac34b | 920 | |
52826846 NB |
921 | if (j<0) |
922 | continue; | |
923 | if (!devices[j].uptodate) | |
924 | continue; | |
925 | chosen_drive = j; | |
8b0dabea | 926 | if ((fd=dev_open(devices[j].devname, O_RDONLY|O_EXCL))< 0) { |
52826846 NB |
927 | fprintf(stderr, Name ": Cannot open %s: %s\n", |
928 | devices[j].devname, strerror(errno)); | |
7f91af49 | 929 | close(mdfd); |
52826846 NB |
930 | return 1; |
931 | } | |
3da92f27 | 932 | if (st->ss->load_super(st,fd, NULL)) { |
52826846 NB |
933 | close(fd); |
934 | fprintf(stderr, Name ": RAID superblock has disappeared from %s\n", | |
935 | devices[j].devname); | |
7f91af49 | 936 | close(mdfd); |
52826846 NB |
937 | return 1; |
938 | } | |
939 | close(fd); | |
940 | } | |
3da92f27 | 941 | if (st->sb == NULL) { |
4b1ac34b | 942 | fprintf(stderr, Name ": No suitable drives found for %s\n", mddev); |
7f91af49 | 943 | close(mdfd); |
4b1ac34b NB |
944 | return 1; |
945 | } | |
98dbd966 | 946 | st->ss->getinfo_super(st, content); |
f35f2525 | 947 | #ifndef MDASSEMBLE |
98dbd966 | 948 | sysfs_init(content, mdfd, 0); |
f35f2525 | 949 | #endif |
56eedc1a | 950 | for (i=0; i<bestcnt; i++) { |
52826846 | 951 | int j = best[i]; |
98c6faba | 952 | unsigned int desired_state; |
11a3e71d | 953 | |
98dbd966 | 954 | if (i < content->array.raid_disks) |
11a3e71d NB |
955 | desired_state = (1<<MD_DISK_ACTIVE) | (1<<MD_DISK_SYNC); |
956 | else | |
957 | desired_state = 0; | |
958 | ||
52826846 NB |
959 | if (j<0) |
960 | continue; | |
961 | if (!devices[j].uptodate) | |
962 | continue; | |
4b1ac34b | 963 | |
213ee40b | 964 | devices[j].i.disk.state = desired_state; |
4e9a6ff7 N |
965 | if (!(devices[j].i.array.state & 1)) |
966 | clean = 0; | |
213ee40b NB |
967 | |
968 | if (st->ss->update_super(st, &devices[j].i, "assemble", NULL, | |
68c7d6d7 | 969 | verbose, 0, NULL)) { |
52826846 | 970 | if (force) { |
dab6685f NB |
971 | if (verbose >= 0) |
972 | fprintf(stderr, Name ": " | |
973 | "clearing FAULTY flag for device %d in %s for %s\n", | |
974 | j, mddev, devices[j].devname); | |
4b1ac34b | 975 | change = 1; |
52826846 | 976 | } else { |
dab6685f NB |
977 | if (verbose >= -1) |
978 | fprintf(stderr, Name ": " | |
979 | "device %d in %s has wrong state in superblock, but %s seems ok\n", | |
980 | i, mddev, devices[j].devname); | |
52826846 NB |
981 | } |
982 | } | |
4b1ac34b | 983 | #if 0 |
213ee40b | 984 | if (!(super.disks[i].i.disk.state & (1 << MD_DISK_FAULTY))) { |
52826846 NB |
985 | fprintf(stderr, Name ": devices %d of %s is not marked FAULTY in superblock, but cannot be found\n", |
986 | i, mddev); | |
987 | } | |
4b1ac34b | 988 | #endif |
52826846 | 989 | } |
c5a6f9a6 | 990 | if (force && !clean && |
98dbd966 DW |
991 | !enough(content->array.level, content->array.raid_disks, |
992 | content->array.layout, clean, | |
c5a6f9a6 | 993 | avail, okcnt)) { |
98dbd966 | 994 | change += st->ss->update_super(st, content, "force-array", |
67a8c82d NB |
995 | devices[chosen_drive].devname, verbose, |
996 | 0, NULL); | |
583315d9 | 997 | clean = 1; |
d013a55e | 998 | } |
52826846 | 999 | |
4b1ac34b | 1000 | if (change) { |
52826846 | 1001 | int fd; |
8b0dabea | 1002 | fd = dev_open(devices[chosen_drive].devname, O_RDWR|O_EXCL); |
52826846 | 1003 | if (fd < 0) { |
353632d9 | 1004 | fprintf(stderr, Name ": Could not open %s for write - cannot Assemble array.\n", |
52826846 | 1005 | devices[chosen_drive].devname); |
7f91af49 | 1006 | close(mdfd); |
52826846 NB |
1007 | return 1; |
1008 | } | |
3da92f27 | 1009 | if (st->ss->store_super(st, fd)) { |
52826846 NB |
1010 | close(fd); |
1011 | fprintf(stderr, Name ": Could not re-write superblock on %s\n", | |
1012 | devices[chosen_drive].devname); | |
7f91af49 | 1013 | close(mdfd); |
52826846 NB |
1014 | return 1; |
1015 | } | |
1016 | close(fd); | |
52826846 NB |
1017 | } |
1018 | ||
353632d9 NB |
1019 | /* If we are in the middle of a reshape we may need to restore saved data |
1020 | * that was moved aside due to the reshape overwriting live data | |
1021 | * The code of doing this lives in Grow.c | |
1022 | */ | |
39c5a909 | 1023 | #ifndef MDASSEMBLE |
98dbd966 | 1024 | if (content->reshape_active) { |
353632d9 NB |
1025 | int err = 0; |
1026 | int *fdlist = malloc(sizeof(int)* bestcnt); | |
cd77ac4e | 1027 | if (verbose > 0) |
ea0ebe96 N |
1028 | fprintf(stderr, Name ":%s has an active reshape - checking " |
1029 | "if critical section needs to be restored\n", | |
1030 | chosen_name); | |
353632d9 NB |
1031 | for (i=0; i<bestcnt; i++) { |
1032 | int j = best[i]; | |
1033 | if (j >= 0) { | |
1034 | fdlist[i] = dev_open(devices[j].devname, O_RDWR|O_EXCL); | |
1035 | if (fdlist[i] < 0) { | |
1036 | fprintf(stderr, Name ": Could not open %s for write - cannot Assemble array.\n", | |
1037 | devices[j].devname); | |
1038 | err = 1; | |
1039 | break; | |
1040 | } | |
1041 | } else | |
1042 | fdlist[i] = -1; | |
1043 | } | |
1044 | if (!err) | |
cd77ac4e | 1045 | err = Grow_restart(st, content, fdlist, bestcnt, backup_file, verbose > 0); |
353632d9 NB |
1046 | while (i>0) { |
1047 | i--; | |
1048 | if (fdlist[i]>=0) close(fdlist[i]); | |
1049 | } | |
1050 | if (err) { | |
1051 | fprintf(stderr, Name ": Failed to restore critical section for reshape, sorry.\n"); | |
e9e43ec3 N |
1052 | if (backup_file == NULL) |
1053 | fprintf(stderr," Possibly you needed to specify the --backup-file\n"); | |
7f91af49 | 1054 | close(mdfd); |
353632d9 NB |
1055 | return err; |
1056 | } | |
1057 | } | |
39c5a909 | 1058 | #endif |
aa88f531 NB |
1059 | /* count number of in-sync devices according to the superblock. |
1060 | * We must have this number to start the array without -s or -R | |
1061 | */ | |
98dbd966 | 1062 | req_cnt = content->array.working_disks; |
aa88f531 | 1063 | |
64c4757e NB |
1064 | /* Almost ready to actually *do* something */ |
1065 | if (!old_linux) { | |
fbf8a0b7 | 1066 | int rv; |
a19c88b8 | 1067 | |
a04d5763 N |
1068 | /* First, fill in the map, so that udev can find our name |
1069 | * as soon as we become active. | |
1070 | */ | |
98dbd966 DW |
1071 | map_update(NULL, fd2devnum(mdfd), content->text_version, |
1072 | content->uuid, chosen_name); | |
a04d5763 | 1073 | |
98dbd966 | 1074 | rv = set_array_info(mdfd, st, content); |
fbf8a0b7 | 1075 | if (rv) { |
f35f2525 | 1076 | fprintf(stderr, Name ": failed to set array info for %s: %s\n", |
64c4757e | 1077 | mddev, strerror(errno)); |
24af7a87 | 1078 | ioctl(mdfd, STOP_ARRAY, NULL); |
7f91af49 | 1079 | close(mdfd); |
64c4757e NB |
1080 | return 1; |
1081 | } | |
11484a63 | 1082 | if (ident->bitmap_fd >= 0) { |
c82f047c NB |
1083 | if (ioctl(mdfd, SET_BITMAP_FILE, ident->bitmap_fd) != 0) { |
1084 | fprintf(stderr, Name ": SET_BITMAP_FILE failed.\n"); | |
24af7a87 | 1085 | ioctl(mdfd, STOP_ARRAY, NULL); |
7f91af49 | 1086 | close(mdfd); |
c82f047c NB |
1087 | return 1; |
1088 | } | |
7ef02d01 NB |
1089 | } else if (ident->bitmap_file) { |
1090 | /* From config file */ | |
1091 | int bmfd = open(ident->bitmap_file, O_RDWR); | |
1092 | if (bmfd < 0) { | |
1093 | fprintf(stderr, Name ": Could not open bitmap file %s\n", | |
1094 | ident->bitmap_file); | |
24af7a87 | 1095 | ioctl(mdfd, STOP_ARRAY, NULL); |
7f91af49 | 1096 | close(mdfd); |
7ef02d01 NB |
1097 | return 1; |
1098 | } | |
1099 | if (ioctl(mdfd, SET_BITMAP_FILE, bmfd) != 0) { | |
1100 | fprintf(stderr, Name ": Failed to set bitmapfile for %s\n", mddev); | |
1101 | close(bmfd); | |
24af7a87 | 1102 | ioctl(mdfd, STOP_ARRAY, NULL); |
7f91af49 | 1103 | close(mdfd); |
7ef02d01 NB |
1104 | return 1; |
1105 | } | |
1106 | close(bmfd); | |
c82f047c | 1107 | } |
7ef02d01 | 1108 | |
52826846 | 1109 | /* First, add the raid disks, but add the chosen one last */ |
56eedc1a | 1110 | for (i=0; i<= bestcnt; i++) { |
52826846 | 1111 | int j; |
56eedc1a | 1112 | if (i < bestcnt) { |
52826846 NB |
1113 | j = best[i]; |
1114 | if (j == chosen_drive) | |
1115 | continue; | |
1116 | } else | |
1117 | j = chosen_drive; | |
1118 | ||
56eedc1a | 1119 | if (j >= 0 /* && devices[j].uptodate */) { |
98dbd966 | 1120 | rv = add_disk(mdfd, st, content, &devices[j].i); |
7801ac20 | 1121 | |
a19c88b8 | 1122 | if (rv) { |
213ee40b NB |
1123 | fprintf(stderr, Name ": failed to add " |
1124 | "%s to %s: %s\n", | |
64c4757e NB |
1125 | devices[j].devname, |
1126 | mddev, | |
1127 | strerror(errno)); | |
98dbd966 | 1128 | if (i < content->array.raid_disks |
213ee40b | 1129 | || i == bestcnt) |
52826846 NB |
1130 | okcnt--; |
1131 | else | |
1132 | sparecnt--; | |
dab6685f | 1133 | } else if (verbose > 0) |
213ee40b NB |
1134 | fprintf(stderr, Name ": added %s " |
1135 | "to %s as %d\n", | |
1136 | devices[j].devname, mddev, | |
1137 | devices[j].i.disk.raid_disk); | |
98dbd966 | 1138 | } else if (verbose > 0 && i < content->array.raid_disks) |
213ee40b NB |
1139 | fprintf(stderr, Name ": no uptodate device for " |
1140 | "slot %d of %s\n", | |
64c4757e NB |
1141 | i, mddev); |
1142 | } | |
aba69144 | 1143 | |
98dbd966 | 1144 | if (content->array.level == LEVEL_CONTAINER) { |
598f0d58 NB |
1145 | if (verbose >= 0) { |
1146 | fprintf(stderr, Name ": Container %s has been " | |
1147 | "assembled with %d drive%s", | |
57ed8c91 | 1148 | mddev, okcnt+sparecnt, okcnt+sparecnt==1?"":"s"); |
f21e18ca | 1149 | if (okcnt < (unsigned)content->array.raid_disks) |
598f0d58 | 1150 | fprintf(stderr, " (out of %d)", |
98dbd966 | 1151 | content->array.raid_disks); |
598f0d58 NB |
1152 | fprintf(stderr, "\n"); |
1153 | } | |
98dbd966 | 1154 | sysfs_uevent(content, "change"); |
a7c6e3fb | 1155 | wait_for(chosen_name, mdfd); |
7f91af49 | 1156 | close(mdfd); |
598f0d58 NB |
1157 | return 0; |
1158 | } | |
1159 | ||
64c4757e | 1160 | if (runstop == 1 || |
b8a8ccf9 | 1161 | (runstop <= 0 && |
98dbd966 DW |
1162 | ( enough(content->array.level, content->array.raid_disks, |
1163 | content->array.layout, clean, avail, okcnt) && | |
1ff98339 | 1164 | (okcnt + rebuilding_cnt >= req_cnt || start_partial_ok) |
aa88f531 | 1165 | ))) { |
e9e43ec3 N |
1166 | /* This array is good-to-go. |
1167 | * If a reshape is in progress then we might need to | |
1168 | * continue monitoring it. In that case we start | |
1169 | * it read-only and let the grow code make it writable. | |
1170 | */ | |
1171 | int rv; | |
eb3929a4 | 1172 | #ifndef MDASSEMBLE |
e9e43ec3 N |
1173 | if (content->reshape_active && |
1174 | content->delta_disks <= 0) | |
1175 | rv = Grow_continue(mdfd, st, content, backup_file); | |
1176 | else | |
eb3929a4 | 1177 | #endif |
e9e43ec3 N |
1178 | rv = ioctl(mdfd, RUN_ARRAY, NULL); |
1179 | if (rv == 0) { | |
dab6685f NB |
1180 | if (verbose >= 0) { |
1181 | fprintf(stderr, Name ": %s has been started with %d drive%s", | |
1182 | mddev, okcnt, okcnt==1?"":"s"); | |
f21e18ca | 1183 | if (okcnt < (unsigned)content->array.raid_disks) |
98dbd966 | 1184 | fprintf(stderr, " (out of %d)", content->array.raid_disks); |
1ff98339 N |
1185 | if (rebuilding_cnt) |
1186 | fprintf(stderr, "%s %d rebuilding", sparecnt?",":" and", rebuilding_cnt); | |
dab6685f NB |
1187 | if (sparecnt) |
1188 | fprintf(stderr, " and %d spare%s", sparecnt, sparecnt==1?"":"s"); | |
1189 | fprintf(stderr, ".\n"); | |
1190 | } | |
8a659c33 N |
1191 | if (content->reshape_active && |
1192 | content->array.level >= 4 && | |
1193 | content->array.level <= 6) { | |
acee8e89 N |
1194 | /* might need to increase the size |
1195 | * of the stripe cache - default is 256 | |
1196 | */ | |
8a659c33 | 1197 | if (256 < 4 * (content->array.chunk_size/4096)) { |
acee8e89 N |
1198 | struct mdinfo *sra = sysfs_read(mdfd, 0, 0); |
1199 | if (sra) | |
1200 | sysfs_set_num(sra, NULL, | |
1201 | "stripe_cache_size", | |
8a659c33 | 1202 | (4 * content->array.chunk_size / 4096) + 1); |
acee8e89 N |
1203 | } |
1204 | } | |
7e83544b N |
1205 | if (okcnt < (unsigned)content->array.raid_disks) { |
1206 | /* If any devices did not get added | |
1207 | * because the kernel rejected them based | |
1208 | * on event count, try adding them | |
1209 | * again providing the action policy is | |
1210 | * 're-add' or greater. The bitmap | |
1211 | * might allow them to be included, or | |
1212 | * they will become spares. | |
1213 | */ | |
1214 | for (i = 0; i <= bestcnt; i++) { | |
1215 | int j = best[i]; | |
1216 | if (j >= 0 && !devices[j].uptodate) { | |
1217 | if (!disk_action_allows(&devices[j].i, st->ss->name, act_re_add)) | |
1218 | continue; | |
1219 | rv = add_disk(mdfd, st, content, | |
1220 | &devices[j].i); | |
1221 | if (rv == 0 && verbose >= 0) | |
1222 | fprintf(stderr, | |
1223 | Name ": %s has been re-added.\n", | |
1224 | devices[j].devname); | |
1225 | } | |
1226 | } | |
1227 | } | |
a7c6e3fb | 1228 | wait_for(mddev, mdfd); |
7f91af49 N |
1229 | close(mdfd); |
1230 | if (auto_assem) { | |
589395d6 | 1231 | int usecs = 1; |
589395d6 NB |
1232 | /* There is a nasty race with 'mdadm --monitor'. |
1233 | * If it opens this device before we close it, | |
1234 | * it gets an incomplete open on which IO | |
598f0d58 NB |
1235 | * doesn't work and the capacity is |
1236 | * wrong. | |
589395d6 NB |
1237 | * If we reopen (to check for layered devices) |
1238 | * before --monitor closes, we loose. | |
1239 | * | |
1240 | * So: wait upto 1 second for there to be | |
1241 | * a non-zero capacity. | |
1242 | */ | |
1243 | while (usecs < 1000) { | |
1244 | mdfd = open(mddev, O_RDONLY); | |
1245 | if (mdfd >= 0) { | |
beae1dfe NB |
1246 | unsigned long long size; |
1247 | if (get_dev_size(mdfd, NULL, &size) && | |
589395d6 NB |
1248 | size > 0) |
1249 | break; | |
1250 | close(mdfd); | |
1251 | } | |
1252 | usleep(usecs); | |
1253 | usecs <<= 1; | |
1254 | } | |
1255 | } | |
64c4757e | 1256 | return 0; |
82b27616 | 1257 | } |
682c7051 | 1258 | fprintf(stderr, Name ": failed to RUN_ARRAY %s: %s\n", |
64c4757e | 1259 | mddev, strerror(errno)); |
583315d9 | 1260 | |
98dbd966 DW |
1261 | if (!enough(content->array.level, content->array.raid_disks, |
1262 | content->array.layout, 1, avail, okcnt)) | |
583315d9 NB |
1263 | fprintf(stderr, Name ": Not enough devices to " |
1264 | "start the array.\n"); | |
98dbd966 DW |
1265 | else if (!enough(content->array.level, |
1266 | content->array.raid_disks, | |
1267 | content->array.layout, clean, | |
583315d9 NB |
1268 | avail, okcnt)) |
1269 | fprintf(stderr, Name ": Not enough devices to " | |
1270 | "start the array while not clean " | |
1271 | "- consider --force.\n"); | |
1272 | ||
7f91af49 | 1273 | if (auto_assem) |
1c203a4b | 1274 | ioctl(mdfd, STOP_ARRAY, NULL); |
7f91af49 | 1275 | close(mdfd); |
64c4757e NB |
1276 | return 1; |
1277 | } | |
82b27616 | 1278 | if (runstop == -1) { |
b8a8ccf9 | 1279 | fprintf(stderr, Name ": %s assembled from %d drive%s", |
52826846 | 1280 | mddev, okcnt, okcnt==1?"":"s"); |
f21e18ca | 1281 | if (okcnt != (unsigned)content->array.raid_disks) |
98dbd966 | 1282 | fprintf(stderr, " (out of %d)", content->array.raid_disks); |
b8a8ccf9 | 1283 | fprintf(stderr, ", but not started.\n"); |
7f91af49 | 1284 | close(mdfd); |
64c4757e | 1285 | return 0; |
82b27616 | 1286 | } |
4855f95c | 1287 | if (verbose >= -1) { |
dab6685f | 1288 | fprintf(stderr, Name ": %s assembled from %d drive%s", mddev, okcnt, okcnt==1?"":"s"); |
1ff98339 N |
1289 | if (rebuilding_cnt) |
1290 | fprintf(stderr, "%s %d rebuilding", sparecnt?", ":" and ", rebuilding_cnt); | |
dab6685f NB |
1291 | if (sparecnt) |
1292 | fprintf(stderr, " and %d spare%s", sparecnt, sparecnt==1?"":"s"); | |
98dbd966 DW |
1293 | if (!enough(content->array.level, content->array.raid_disks, |
1294 | content->array.layout, 1, avail, okcnt)) | |
dab6685f | 1295 | fprintf(stderr, " - not enough to start the array.\n"); |
98dbd966 DW |
1296 | else if (!enough(content->array.level, |
1297 | content->array.raid_disks, | |
1298 | content->array.layout, clean, | |
583315d9 NB |
1299 | avail, okcnt)) |
1300 | fprintf(stderr, " - not enough to start the " | |
1301 | "array while not clean - consider " | |
1302 | "--force.\n"); | |
dab6685f | 1303 | else { |
f21e18ca | 1304 | if (req_cnt == (unsigned)content->array.raid_disks) |
dab6685f NB |
1305 | fprintf(stderr, " - need all %d to start it", req_cnt); |
1306 | else | |
98dbd966 | 1307 | fprintf(stderr, " - need %d of %d to start", req_cnt, content->array.raid_disks); |
dab6685f NB |
1308 | fprintf(stderr, " (use --run to insist).\n"); |
1309 | } | |
aa88f531 | 1310 | } |
7f91af49 | 1311 | if (auto_assem) |
1c203a4b | 1312 | ioctl(mdfd, STOP_ARRAY, NULL); |
56a8da69 | 1313 | close(mdfd); |
64c4757e | 1314 | return 1; |
82b27616 | 1315 | } else { |
52826846 NB |
1316 | /* The "chosen_drive" is a good choice, and if necessary, the superblock has |
1317 | * been updated to point to the current locations of devices. | |
1318 | * so we can just start the array | |
82b27616 | 1319 | */ |
cd29a5c8 | 1320 | unsigned long dev; |
213ee40b NB |
1321 | dev = makedev(devices[chosen_drive].i.disk.major, |
1322 | devices[chosen_drive].i.disk.minor); | |
82b27616 NB |
1323 | if (ioctl(mdfd, START_ARRAY, dev)) { |
1324 | fprintf(stderr, Name ": Cannot start array: %s\n", | |
1325 | strerror(errno)); | |
1326 | } | |
aba69144 | 1327 | |
64c4757e | 1328 | } |
7f91af49 | 1329 | close(mdfd); |
e0d19036 | 1330 | return 0; |
64c4757e | 1331 | } |
6234c63c DW |
1332 | |
1333 | #ifndef MDASSEMBLE | |
1334 | int assemble_container_content(struct supertype *st, int mdfd, | |
1335 | struct mdinfo *content, int runstop, | |
1336 | char *chosen_name, int verbose) | |
1337 | { | |
1338 | struct mdinfo *dev, *sra; | |
1339 | int working = 0, preexist = 0; | |
1340 | struct map_ent *map = NULL; | |
1341 | ||
1342 | sysfs_init(content, mdfd, 0); | |
1343 | ||
1344 | sra = sysfs_read(mdfd, 0, GET_VERSION); | |
1345 | if (sra == NULL || strcmp(sra->text_version, content->text_version) != 0) | |
4408ee76 N |
1346 | if (sysfs_set_array(content, md_get_version(mdfd)) != 0) { |
1347 | close(mdfd); | |
6234c63c | 1348 | return 1; |
4408ee76 | 1349 | } |
6234c63c DW |
1350 | if (sra) |
1351 | sysfs_free(sra); | |
1352 | ||
1353 | for (dev = content->devs; dev; dev = dev->next) | |
462906cd | 1354 | if (sysfs_add_disk(content, dev, 1) == 0) |
6234c63c DW |
1355 | working++; |
1356 | else if (errno == EEXIST) | |
1357 | preexist++; | |
4408ee76 N |
1358 | if (working == 0) { |
1359 | close(mdfd); | |
7cb2aa33 | 1360 | return 1;/* Nothing new, don't try to start */ |
8b4e5ea9 N |
1361 | } |
1362 | ||
1363 | map_update(&map, fd2devnum(mdfd), | |
1364 | content->text_version, | |
1365 | content->uuid, chosen_name); | |
1366 | ||
1367 | if (runstop > 0 || | |
6234c63c | 1368 | (working + preexist) >= content->array.working_disks) { |
bb50e5d3 | 1369 | int err; |
a714580e | 1370 | |
6234c63c DW |
1371 | switch(content->array.level) { |
1372 | case LEVEL_LINEAR: | |
1373 | case LEVEL_MULTIPATH: | |
1374 | case 0: | |
bb50e5d3 N |
1375 | err = sysfs_set_str(content, NULL, "array_state", |
1376 | "active"); | |
6234c63c DW |
1377 | break; |
1378 | default: | |
bb50e5d3 | 1379 | err = sysfs_set_str(content, NULL, "array_state", |
6234c63c DW |
1380 | "readonly"); |
1381 | /* start mdmon if needed. */ | |
bb50e5d3 N |
1382 | if (!err) { |
1383 | if (!mdmon_running(st->container_dev)) | |
1384 | start_mdmon(st->container_dev); | |
1385 | ping_monitor(devnum2devname(st->container_dev)); | |
1386 | } | |
6234c63c DW |
1387 | break; |
1388 | } | |
bb50e5d3 N |
1389 | if (!err) |
1390 | sysfs_set_safemode(content, content->safe_mode_delay); | |
6234c63c | 1391 | if (verbose >= 0) { |
bb50e5d3 N |
1392 | if (err) |
1393 | fprintf(stderr, Name | |
1394 | ": array %s now has %d devices", | |
1395 | chosen_name, working + preexist); | |
1396 | else | |
1397 | fprintf(stderr, Name | |
1398 | ": Started %s with %d devices", | |
1399 | chosen_name, working + preexist); | |
6234c63c DW |
1400 | if (preexist) |
1401 | fprintf(stderr, " (%d new)", working); | |
1402 | fprintf(stderr, "\n"); | |
1403 | } | |
bb50e5d3 | 1404 | if (!err) |
a7c6e3fb | 1405 | wait_for(chosen_name, mdfd); |
4408ee76 | 1406 | close(mdfd); |
7cb2aa33 | 1407 | return 0; |
6234c63c | 1408 | /* FIXME should have an O_EXCL and wait for read-auto */ |
7cb2aa33 | 1409 | } else { |
6234c63c DW |
1410 | if (verbose >= 0) |
1411 | fprintf(stderr, Name | |
1412 | ": %s assembled with %d devices but " | |
1413 | "not started\n", | |
1414 | chosen_name, working); | |
4408ee76 | 1415 | close(mdfd); |
7cb2aa33 N |
1416 | return 1; |
1417 | } | |
6234c63c DW |
1418 | } |
1419 | #endif | |
1420 |