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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 | ||
fa56eddb | 73 | static int ident_matches(struct mddev_ident *ident, |
08fb91a3 N |
74 | struct mdinfo *content, |
75 | struct supertype *tst, | |
76 | char *homehost, | |
77 | char *update, char *devname) | |
78 | { | |
79 | ||
80 | if (ident->uuid_set && (!update || strcmp(update, "uuid")!= 0) && | |
cbeeb0e5 AC |
81 | same_uuid(content->uuid, ident->uuid, tst->ss->swapuuid)==0 && |
82 | memcmp(content->uuid, uuid_zero, sizeof(int[4])) != 0) { | |
08fb91a3 N |
83 | if (devname) |
84 | fprintf(stderr, Name ": %s has wrong uuid.\n", | |
85 | devname); | |
86 | return 0; | |
87 | } | |
88 | if (ident->name[0] && (!update || strcmp(update, "name")!= 0) && | |
89 | name_matches(content->name, ident->name, homehost)==0) { | |
90 | if (devname) | |
91 | fprintf(stderr, Name ": %s has wrong name.\n", | |
92 | devname); | |
93 | return 0; | |
94 | } | |
95 | if (ident->super_minor != UnSet && | |
96 | ident->super_minor != content->array.md_minor) { | |
97 | if (devname) | |
98 | fprintf(stderr, Name ": %s has wrong super-minor.\n", | |
99 | devname); | |
100 | return 0; | |
101 | } | |
102 | if (ident->level != UnSet && | |
103 | ident->level != content->array.level) { | |
104 | if (devname) | |
105 | fprintf(stderr, Name ": %s has wrong raid level.\n", | |
106 | devname); | |
107 | return 0; | |
108 | } | |
109 | if (ident->raid_disks != UnSet && | |
110 | ident->raid_disks!= content->array.raid_disks) { | |
111 | if (devname) | |
112 | fprintf(stderr, Name ": %s requires wrong number of drives.\n", | |
113 | devname); | |
114 | return 0; | |
115 | } | |
805d30b2 N |
116 | if (ident->member && ident->member[0]) { |
117 | /* content->text_version must match */ | |
118 | char *s = strchr(content->text_version+1, '/'); | |
119 | if (s == NULL) { | |
120 | if (devname) | |
121 | fprintf(stderr, Name ": %s is not a container and one is required.\n", | |
122 | devname); | |
123 | return 0; | |
124 | } else if (strcmp(ident->member, s+1) != 0) { | |
125 | if (devname) | |
126 | fprintf(stderr, Name ": skipping wrong member %s is %s\n", | |
127 | content->text_version, devname); | |
128 | return 0; | |
129 | } | |
130 | } | |
08fb91a3 N |
131 | return 1; |
132 | } | |
133 | ||
134 | ||
7f91af49 | 135 | int Assemble(struct supertype *st, char *mddev, |
fa56eddb | 136 | struct mddev_ident *ident, |
87f26d14 N |
137 | struct mddev_dev *devlist, |
138 | char *backup_file, int invalid_backup, | |
64c4757e | 139 | int readonly, int runstop, |
0ac91628 | 140 | char *update, char *homehost, int require_homehost, |
64c4757e NB |
141 | int verbose, int force) |
142 | { | |
143 | /* | |
52826846 NB |
144 | * The task of Assemble is to find a collection of |
145 | * devices that should (according to their superblocks) | |
146 | * form an array, and to give this collection to the MD driver. | |
147 | * In Linux-2.4 and later, this involves submitting a | |
64c4757e NB |
148 | * SET_ARRAY_INFO ioctl with no arg - to prepare |
149 | * the array - and then submit a number of | |
150 | * ADD_NEW_DISK ioctls to add disks into | |
151 | * the array. Finally RUN_ARRAY might | |
152 | * be submitted to start the array. | |
153 | * | |
154 | * Much of the work of Assemble is in finding and/or | |
155 | * checking the disks to make sure they look right. | |
156 | * | |
4b1ac34b | 157 | * If mddev is not set, then scan must be set and we |
64c4757e NB |
158 | * read through the config file for dev+uuid mapping |
159 | * We recurse, setting mddev, for each device that | |
160 | * - isn't running | |
4b1ac34b | 161 | * - has a valid uuid (or any uuid if !uuidset) |
64c4757e NB |
162 | * |
163 | * If mddev is set, we try to determine state of md. | |
164 | * check version - must be at least 0.90.0 | |
165 | * check kernel version. must be at least 2.4. | |
166 | * If not, we can possibly fall back on START_ARRAY | |
167 | * Try to GET_ARRAY_INFO. | |
168 | * If possible, give up | |
169 | * If not, try to STOP_ARRAY just to make sure | |
170 | * | |
171 | * If !uuidset and scan, look in conf-file for uuid | |
172 | * If not found, give up | |
b8a8ccf9 | 173 | * If !devlist and scan and uuidset, get list of devs from conf-file |
64c4757e NB |
174 | * |
175 | * For each device: | |
176 | * Check superblock - discard if bad | |
177 | * Check uuid (set if we don't have one) - discard if no match | |
5787fa49 | 178 | * Check superblock similarity if we have a superblock - discard if different |
4b1ac34b | 179 | * Record events, devicenum |
64c4757e | 180 | * This should give us a list of devices for the array |
4b1ac34b | 181 | * We should collect the most recent event number |
64c4757e NB |
182 | * |
183 | * Count disks with recent enough event count | |
184 | * While force && !enough disks | |
185 | * Choose newest rejected disks, update event count | |
186 | * mark clean and rewrite superblock | |
187 | * If recent kernel: | |
188 | * SET_ARRAY_INFO | |
189 | * foreach device with recent events : ADD_NEW_DISK | |
190 | * if runstop == 1 || "enough" disks and runstop==0 -> RUN_ARRAY | |
191 | * If old kernel: | |
192 | * Check the device numbers in superblock are right | |
193 | * update superblock if any changes | |
194 | * START_ARRAY | |
195 | * | |
196 | */ | |
c30e5369 N |
197 | int mdfd; |
198 | int clean; | |
f05641cf N |
199 | int auto_assem = (mddev == NULL && !ident->uuid_set && |
200 | ident->super_minor == UnSet && ident->name[0] == 0 | |
aa7c284c | 201 | && (ident->container == NULL || ident->member == NULL)); |
64c4757e | 202 | int old_linux = 0; |
c30e5369 | 203 | int vers = vers; /* Keep gcc quite - it really is initialised */ |
64c4757e NB |
204 | struct { |
205 | char *devname; | |
213ee40b NB |
206 | int uptodate; /* set once we decide that this device is as |
207 | * recent as everything else in the array. | |
208 | */ | |
209 | struct mdinfo i; | |
5787fa49 | 210 | } *devices; |
02e7c5b7 | 211 | char *devmap; |
56eedc1a | 212 | int *best = NULL; /* indexed by raid_disk */ |
f21e18ca | 213 | int bestcnt = 0; |
98c6faba | 214 | int devcnt = 0; |
1ff98339 | 215 | unsigned int okcnt, sparecnt, rebuilding_cnt; |
98c6faba | 216 | unsigned int req_cnt; |
f21e18ca | 217 | int i; |
64c4757e | 218 | int most_recent = 0; |
cd29a5c8 | 219 | int chosen_drive; |
52826846 | 220 | int change = 0; |
cd29a5c8 | 221 | int inargv = 0; |
52437b4f | 222 | int report_missmatch; |
bf4fb153 | 223 | int bitmap_done; |
7f91af49 N |
224 | int start_partial_ok = (runstop >= 0) && |
225 | (force || devlist==NULL || auto_assem); | |
98c6faba | 226 | unsigned int num_devs; |
a655e550 | 227 | struct mddev_dev *tmpdev; |
4b1ac34b | 228 | struct mdinfo info; |
98dbd966 | 229 | struct mdinfo *content = NULL; |
265e0f17 | 230 | char *avail; |
308e1801 | 231 | int nextspare = 0; |
197e3eb6 | 232 | char *name = NULL; |
69207ff6 | 233 | int trustworthy; |
a04d5763 | 234 | char chosen_name[1024]; |
cbeeb0e5 | 235 | struct domainlist *domains = NULL; |
8a46fe84 | 236 | |
682c7051 | 237 | if (get_linux_version() < 2004000) |
64c4757e NB |
238 | old_linux = 1; |
239 | ||
64c4757e | 240 | /* |
52826846 NB |
241 | * If any subdevs are listed, then any that don't |
242 | * match ident are discarded. Remainder must all match and | |
243 | * become the array. | |
244 | * If no subdevs, then we scan all devices in the config file, but | |
245 | * there must be something in the identity | |
64c4757e | 246 | */ |
64c4757e | 247 | |
cd29a5c8 | 248 | if (!devlist && |
52826846 | 249 | ident->uuid_set == 0 && |
f21e18ca | 250 | (ident->super_minor < 0 || ident->super_minor == UnSet) && |
e0fe762a N |
251 | ident->name[0] == 0 && |
252 | (ident->container == NULL || ident->member == NULL) && | |
52826846 NB |
253 | ident->devices == NULL) { |
254 | fprintf(stderr, Name ": No identity information available for %s - cannot assemble.\n", | |
8a46fe84 | 255 | mddev ? mddev : "further assembly"); |
52826846 | 256 | return 1; |
64c4757e | 257 | } |
71d60c48 | 258 | |
cd29a5c8 | 259 | if (devlist == NULL) |
8aec876d | 260 | devlist = conf_get_devs(); |
7f91af49 | 261 | else if (mddev) |
da6b5ca9 | 262 | inargv = 1; |
64c4757e | 263 | |
52437b4f | 264 | report_missmatch = ((inargv && verbose >= 0) || verbose > 0); |
60e1bc1a | 265 | try_again: |
c30e5369 N |
266 | /* We come back here when doing auto-assembly and attempting some |
267 | * set of devices failed. Those are now marked as ->used==2 and | |
268 | * we ignore them and try again | |
269 | */ | |
60e1bc1a | 270 | |
5787fa49 NB |
271 | tmpdev = devlist; num_devs = 0; |
272 | while (tmpdev) { | |
da6b5ca9 NB |
273 | if (tmpdev->used) |
274 | tmpdev->used = 2; | |
275 | else | |
276 | num_devs++; | |
5787fa49 NB |
277 | tmpdev = tmpdev->next; |
278 | } | |
5787fa49 | 279 | |
82d9eba6 | 280 | if (!st && ident->st) st = ident->st; |
64c4757e | 281 | |
dab6685f | 282 | if (verbose>0) |
82b27616 | 283 | fprintf(stderr, Name ": looking for devices for %s\n", |
8a46fe84 | 284 | mddev ? mddev : "further assembly"); |
82b27616 | 285 | |
811e6cbe NB |
286 | /* first walk the list of devices to find a consistent set |
287 | * that match the criterea, if that is possible. | |
c30e5369 | 288 | * We flag the ones we like with 'used'. |
811e6cbe NB |
289 | */ |
290 | for (tmpdev = devlist; | |
291 | tmpdev; | |
5083d66b | 292 | tmpdev = tmpdev ? tmpdev->next : NULL) { |
811e6cbe | 293 | char *devname = tmpdev->devname; |
64c4757e NB |
294 | int dfd; |
295 | struct stat stb; | |
3da92f27 | 296 | struct supertype *tst = dup_super(st); |
4e8d9f0a | 297 | struct dev_policy *pol = NULL; |
5083d66b | 298 | int found_container = 0; |
52826846 | 299 | |
da6b5ca9 NB |
300 | if (tmpdev->used > 1) continue; |
301 | ||
52826846 | 302 | if (ident->devices && |
56eedc1a | 303 | !match_oneof(ident->devices, devname)) { |
52437b4f | 304 | if (report_missmatch) |
56eedc1a | 305 | fprintf(stderr, Name ": %s is not one of %s\n", devname, ident->devices); |
52826846 | 306 | continue; |
56eedc1a | 307 | } |
4b1ac34b | 308 | |
8b0dabea | 309 | dfd = dev_open(devname, O_RDONLY|O_EXCL); |
64c4757e | 310 | if (dfd < 0) { |
52437b4f | 311 | if (report_missmatch) |
682c7051 | 312 | fprintf(stderr, Name ": cannot open device %s: %s\n", |
64c4757e | 313 | devname, strerror(errno)); |
da6b5ca9 | 314 | tmpdev->used = 2; |
52826846 NB |
315 | } else if (fstat(dfd, &stb)< 0) { |
316 | /* Impossible! */ | |
317 | fprintf(stderr, Name ": fstat failed for %s: %s\n", | |
318 | devname, strerror(errno)); | |
da6b5ca9 | 319 | tmpdev->used = 2; |
cd29a5c8 NB |
320 | } else if ((stb.st_mode & S_IFMT) != S_IFBLK) { |
321 | fprintf(stderr, Name ": %s is not a block device.\n", | |
52826846 | 322 | devname); |
da6b5ca9 | 323 | tmpdev->used = 2; |
5083d66b N |
324 | } else if (must_be_container(dfd)) { |
325 | if (st) { | |
326 | /* already found some components, this cannot | |
327 | * be another one. | |
328 | */ | |
329 | if (report_missmatch) | |
330 | fprintf(stderr, Name ": %s is a container, but we are looking for components\n", | |
331 | devname); | |
332 | tmpdev->used = 2; | |
71204a50 | 333 | #if !defined(MDASSEMBLE) || defined(MDASSEMBLE) && defined(MDASSEMBLE_AUTO) |
5083d66b N |
334 | } if (!tst && (tst = super_by_fd(dfd, NULL)) == NULL) { |
335 | if (report_missmatch) | |
336 | fprintf(stderr, Name ": not a recognisable container: %s\n", | |
337 | devname); | |
338 | tmpdev->used = 2; | |
71204a50 | 339 | #endif |
417f346e HCP |
340 | } else if (!tst->ss->load_container |
341 | || tst->ss->load_container(tst, dfd, NULL)) { | |
5083d66b N |
342 | if (report_missmatch) |
343 | fprintf(stderr, Name ": no correct container type: %s\n", | |
344 | devname); | |
345 | tmpdev->used = 2; | |
346 | } else if (auto_assem && | |
347 | !conf_test_metadata(tst->ss->name, (pol = devnum_policy(stb.st_rdev)), | |
348 | tst->ss->match_home(tst, homehost) == 1)) { | |
349 | if (report_missmatch) | |
350 | fprintf(stderr, Name ": %s has metadata type %s for which " | |
351 | "auto-assembly is disabled\n", | |
352 | devname, tst->ss->name); | |
353 | tmpdev->used = 2; | |
354 | } else | |
355 | found_container = 1; | |
52826846 | 356 | } else { |
5083d66b N |
357 | if (!tst && (tst = guess_super(dfd)) == NULL) { |
358 | if (report_missmatch) | |
359 | fprintf(stderr, Name ": no recogniseable superblock on %s\n", | |
360 | devname); | |
361 | tmpdev->used = 2; | |
362 | } else if (tst->ss->load_super(tst,dfd, NULL)) { | |
363 | if (report_missmatch) | |
364 | fprintf(stderr, Name ": no RAID superblock on %s\n", | |
365 | devname); | |
366 | tmpdev->used = 2; | |
367 | } else if (tst->ss->compare_super == NULL) { | |
368 | if (report_missmatch) | |
369 | fprintf(stderr, Name ": Cannot assemble %s metadata on %s\n", | |
370 | tst->ss->name, devname); | |
371 | tmpdev->used = 2; | |
372 | } else if (auto_assem && st == NULL && | |
373 | !conf_test_metadata(tst->ss->name, (pol = devnum_policy(stb.st_rdev)), | |
374 | tst->ss->match_home(tst, homehost) == 1)) { | |
375 | if (report_missmatch) | |
376 | fprintf(stderr, Name ": %s has metadata type %s for which " | |
377 | "auto-assembly is disabled\n", | |
378 | devname, tst->ss->name); | |
379 | tmpdev->used = 2; | |
380 | } | |
64c4757e | 381 | } |
c06487ce | 382 | if (dfd >= 0) close(dfd); |
d68ea4d7 | 383 | if (tmpdev->used == 2) { |
d4386799 | 384 | if (auto_assem || !inargv) |
d68ea4d7 N |
385 | /* Ignore unrecognised devices during auto-assembly */ |
386 | goto loop; | |
387 | if (ident->uuid_set || ident->name[0] || | |
388 | ident->super_minor != UnSet) | |
389 | /* Ignore unrecognised device if looking for | |
390 | * specific array */ | |
391 | goto loop; | |
392 | ||
393 | ||
394 | fprintf(stderr, Name ": %s has no superblock - assembly aborted\n", | |
395 | devname); | |
396 | if (st) | |
397 | st->ss->free_super(st); | |
398 | dev_policy_free(pol); | |
cbeeb0e5 | 399 | domain_free(domains); |
d68ea4d7 N |
400 | return 1; |
401 | } | |
52826846 | 402 | |
5083d66b | 403 | if (found_container) { |
9008ed1c N |
404 | /* tmpdev is a container. We need to be either |
405 | * looking for a member, or auto-assembling | |
406 | */ | |
9008ed1c N |
407 | |
408 | if (ident->container) { | |
409 | if (ident->container[0] == '/' && | |
410 | !same_dev(ident->container, devname)) { | |
411 | if (report_missmatch) | |
412 | fprintf(stderr, Name ": %s is not the container required (%s)\n", | |
413 | devname, ident->container); | |
414 | goto loop; | |
415 | } | |
416 | if (ident->container[0] != '/') { | |
417 | /* we have a uuid */ | |
418 | int uuid[4]; | |
87477e6d N |
419 | |
420 | content = &info; | |
421 | memset(content, 0, sizeof(*content)); | |
422 | tst->ss->getinfo_super(tst, content, NULL); | |
423 | ||
9008ed1c N |
424 | if (!parse_uuid(ident->container, uuid) || |
425 | !same_uuid(content->uuid, uuid, tst->ss->swapuuid)) { | |
426 | if (report_missmatch) | |
427 | fprintf(stderr, Name ": %s has wrong UUID to be required container\n", | |
428 | devname); | |
429 | goto loop; | |
430 | } | |
431 | } | |
432 | } | |
433 | /* It is worth looking inside this container. | |
434 | */ | |
7636b5a8 N |
435 | if (verbose > 0) |
436 | fprintf(stderr, Name ": looking in container %s\n", | |
437 | devname); | |
1415fe4b | 438 | |
88cef9b3 N |
439 | for (content = tst->ss->container_content(tst, NULL); |
440 | content; | |
441 | content = content->next) { | |
1415fe4b | 442 | |
a06d022d KW |
443 | /* do not assemble arrays that might have bad blocks */ |
444 | if (content->array.state & (1<<MD_SB_BBM_ERRORS)) { | |
445 | fprintf(stderr, Name ": BBM log found in metadata. " | |
446 | "Cannot activate array(s).\n"); | |
447 | tmpdev->used = 2; | |
448 | goto loop; | |
449 | } | |
88cef9b3 N |
450 | if (!ident_matches(ident, content, tst, |
451 | homehost, update, | |
452 | report_missmatch ? devname : NULL)) | |
453 | /* message already printed */; | |
454 | else if (is_member_busy(content->text_version)) { | |
455 | if (report_missmatch) | |
456 | fprintf(stderr, Name ": member %s in %s is already assembled\n", | |
457 | content->text_version, | |
458 | devname); | |
459 | } else | |
460 | break; | |
461 | } | |
462 | if (!content) { | |
f7ad3ccc | 463 | tmpdev->used = 2; |
88cef9b3 | 464 | goto loop; /* empty container */ |
fa031239 | 465 | } |
88cef9b3 | 466 | |
9008ed1c | 467 | st = tst; tst = NULL; |
4c1c3ad8 | 468 | if (!auto_assem && inargv && tmpdev->next != NULL) { |
9008ed1c N |
469 | fprintf(stderr, Name ": %s is a container, but is not " |
470 | "only device given: confused and aborting\n", | |
471 | devname); | |
472 | st->ss->free_super(st); | |
4e8d9f0a | 473 | dev_policy_free(pol); |
cbeeb0e5 | 474 | domain_free(domains); |
9008ed1c N |
475 | return 1; |
476 | } | |
7636b5a8 N |
477 | if (verbose > 0) |
478 | fprintf(stderr, Name ": found match on member %s in %s\n", | |
479 | content->text_version, devname); | |
bac0d92e | 480 | |
5083d66b N |
481 | /* make sure we finished the loop */ |
482 | tmpdev = NULL; | |
bac0d92e | 483 | goto loop; |
5083d66b | 484 | } else { |
bac0d92e | 485 | |
5083d66b N |
486 | content = &info; |
487 | memset(content, 0, sizeof(*content)); | |
488 | tst->ss->getinfo_super(tst, content, NULL); | |
489 | ||
490 | if (!ident_matches(ident, content, tst, | |
491 | homehost, update, | |
492 | report_missmatch ? devname : NULL)) | |
df37ffc0 | 493 | goto loop; |
cbeeb0e5 | 494 | |
5083d66b N |
495 | if (st == NULL) |
496 | st = dup_super(tst); | |
497 | if (st->minor_version == -1) | |
498 | st->minor_version = tst->minor_version; | |
ed7fc6b4 AC |
499 | |
500 | if (memcmp(content->uuid, uuid_zero, | |
501 | sizeof(int[4])) == 0) { | |
502 | /* this is a floating spare. It cannot define | |
503 | * an array unless there are no more arrays of | |
504 | * this type to be found. It can be included | |
505 | * in an array of this type though. | |
506 | */ | |
507 | tmpdev->used = 3; | |
508 | goto loop; | |
509 | } | |
510 | ||
5083d66b N |
511 | if (st->ss != tst->ss || |
512 | st->minor_version != tst->minor_version || | |
513 | st->ss->compare_super(st, tst) != 0) { | |
514 | /* Some mismatch. If exactly one array matches this host, | |
515 | * we can resolve on that one. | |
516 | * Or, if we are auto assembling, we just ignore the second | |
517 | * for now. | |
518 | */ | |
519 | if (auto_assem) | |
520 | goto loop; | |
521 | if (homehost) { | |
522 | int first = st->ss->match_home(st, homehost); | |
523 | int last = tst->ss->match_home(tst, homehost); | |
524 | if (first != last && | |
525 | (first == 1 || last == 1)) { | |
526 | /* We can do something */ | |
527 | if (first) {/* just ignore this one */ | |
528 | if (report_missmatch) | |
529 | fprintf(stderr, Name ": %s misses out due to wrong homehost\n", | |
530 | devname); | |
531 | goto loop; | |
532 | } else { /* reject all those sofar */ | |
533 | struct mddev_dev *td; | |
534 | if (report_missmatch) | |
535 | fprintf(stderr, Name ": %s overrides previous devices due to good homehost\n", | |
536 | devname); | |
537 | for (td=devlist; td != tmpdev; td=td->next) | |
538 | if (td->used == 1) | |
539 | td->used = 0; | |
540 | tmpdev->used = 1; | |
541 | goto loop; | |
542 | } | |
83b6208e NB |
543 | } |
544 | } | |
5083d66b N |
545 | fprintf(stderr, Name ": superblock on %s doesn't match others - assembly aborted\n", |
546 | devname); | |
547 | tst->ss->free_super(tst); | |
548 | st->ss->free_super(st); | |
549 | dev_policy_free(pol); | |
cbeeb0e5 | 550 | domain_free(domains); |
5083d66b | 551 | return 1; |
83b6208e | 552 | } |
5083d66b | 553 | tmpdev->used = 1; |
64c4757e | 554 | } |
df37ffc0 | 555 | loop: |
cbeeb0e5 | 556 | /* Collect domain information from members only */ |
26b05aea AC |
557 | if (tmpdev && tmpdev->used == 1) { |
558 | if (!pol) | |
559 | pol = devnum_policy(stb.st_rdev); | |
cbeeb0e5 | 560 | domain_merge(&domains, pol, tst?tst->ss->name:NULL); |
26b05aea | 561 | } |
4e8d9f0a N |
562 | dev_policy_free(pol); |
563 | pol = NULL; | |
3d2b16e7 NB |
564 | if (tst) |
565 | tst->ss->free_super(tst); | |
811e6cbe NB |
566 | } |
567 | ||
ed7fc6b4 | 568 | /* Check if we found some imsm spares but no members */ |
3c7b4a25 CA |
569 | if ((auto_assem || |
570 | (ident->uuid_set && | |
571 | memcmp(uuid_zero, ident->uuid,sizeof(uuid_zero)) == 0)) && | |
572 | (!st || !st->sb)) | |
ed7fc6b4 AC |
573 | for (tmpdev = devlist; tmpdev; tmpdev = tmpdev->next) { |
574 | if (tmpdev->used != 3) | |
575 | continue; | |
576 | tmpdev->used = 1; | |
577 | content = &info; | |
578 | ||
579 | if (!st->sb) { | |
580 | /* we need sb from one of the spares */ | |
581 | int dfd = dev_open(tmpdev->devname, O_RDONLY); | |
582 | if (dfd < 0 || | |
583 | st->ss->load_super(st, dfd, NULL)) | |
584 | tmpdev->used = 2; | |
585 | if (dfd > 0) | |
586 | close(dfd); | |
587 | } | |
588 | } | |
589 | ||
cbeeb0e5 AC |
590 | /* Now reject spares that don't match domains of identified members */ |
591 | for (tmpdev = devlist; tmpdev; tmpdev = tmpdev->next) { | |
592 | struct stat stb; | |
593 | if (tmpdev->used != 3) | |
594 | continue; | |
595 | if (stat(tmpdev->devname, &stb)< 0) { | |
596 | fprintf(stderr, Name ": fstat failed for %s: %s\n", | |
597 | tmpdev->devname, strerror(errno)); | |
598 | tmpdev->used = 2; | |
599 | } else { | |
a5d10dce N |
600 | struct dev_policy *pol = devnum_policy(stb.st_rdev); |
601 | int dt = domain_test(domains, pol, NULL); | |
602 | if (inargv && dt != 0) | |
603 | /* take this spare as domains match | |
604 | * if there are any */ | |
605 | tmpdev->used = 1; | |
606 | else if (!inargv && dt == 1) | |
607 | /* device wasn't explicitly listed, so need | |
608 | * explicit domain match - which we have */ | |
cbeeb0e5 AC |
609 | tmpdev->used = 1; |
610 | else | |
611 | /* if domains don't match mark as unused */ | |
612 | tmpdev->used = 0; | |
613 | dev_policy_free(pol); | |
614 | } | |
615 | } | |
616 | domain_free(domains); | |
617 | ||
98dbd966 | 618 | if (!st || !st->sb || !content) |
c30e5369 N |
619 | return 2; |
620 | ||
05833051 | 621 | /* Now need to open the array device. Use create_mddev */ |
98dbd966 | 622 | if (content == &info) |
a5d85af7 | 623 | st->ss->getinfo_super(st, content, NULL); |
3d2c4fc7 | 624 | |
69207ff6 | 625 | trustworthy = FOREIGN; |
05833051 | 626 | name = content->name; |
745f72f6 N |
627 | switch (st->ss->match_home(st, homehost) |
628 | ?: st->ss->match_home(st, "any")) { | |
69207ff6 N |
629 | case 1: |
630 | trustworthy = LOCAL; | |
98dbd966 | 631 | name = strchr(content->name, ':'); |
69207ff6 N |
632 | if (name) |
633 | name++; | |
3d2c4fc7 | 634 | else |
98dbd966 | 635 | name = content->name; |
69207ff6 | 636 | break; |
c30e5369 | 637 | } |
05833051 | 638 | if (!auto_assem) |
aa7c284c | 639 | /* If the array is listed in mdadm.conf or on |
ac2ecf55 N |
640 | * command line, then we trust the name |
641 | * even if the array doesn't look local | |
642 | */ | |
643 | trustworthy = LOCAL; | |
644 | ||
05833051 | 645 | if (name[0] == 0 && |
98dbd966 DW |
646 | content->array.level == LEVEL_CONTAINER) { |
647 | name = content->text_version; | |
a4bc1720 N |
648 | trustworthy = METADATA; |
649 | } | |
0ac91628 N |
650 | |
651 | if (name[0] && trustworthy != LOCAL && | |
652 | ! require_homehost && | |
653 | conf_name_is_free(name)) | |
654 | trustworthy = LOCAL; | |
655 | ||
7cdc0872 N |
656 | if (trustworthy == LOCAL && |
657 | strchr(name, ':')) | |
658 | /* Ignore 'host:' prefix of name */ | |
659 | name = strchr(name, ':')+1; | |
660 | ||
a04d5763 N |
661 | mdfd = create_mddev(mddev, name, ident->autof, trustworthy, |
662 | chosen_name); | |
c30e5369 N |
663 | if (mdfd < 0) { |
664 | st->ss->free_super(st); | |
c30e5369 | 665 | if (auto_assem) |
60e1bc1a | 666 | goto try_again; |
c30e5369 N |
667 | return 1; |
668 | } | |
a04d5763 | 669 | mddev = chosen_name; |
c30e5369 N |
670 | vers = md_get_version(mdfd); |
671 | if (vers < 9000) { | |
672 | fprintf(stderr, Name ": Assemble requires driver version 0.90.0 or later.\n" | |
673 | " Upgrade your kernel or try --build\n"); | |
674 | close(mdfd); | |
675 | return 1; | |
676 | } | |
66afdfa9 | 677 | if (mddev_busy(fd2devnum(mdfd))) { |
c30e5369 N |
678 | fprintf(stderr, Name ": %s already active, cannot restart it!\n", |
679 | mddev); | |
680 | for (tmpdev = devlist ; | |
681 | tmpdev && tmpdev->used != 1; | |
682 | tmpdev = tmpdev->next) | |
683 | ; | |
684 | if (tmpdev && auto_assem) | |
685 | fprintf(stderr, Name ": %s needed for %s...\n", | |
686 | mddev, tmpdev->devname); | |
687 | close(mdfd); | |
688 | mdfd = -3; | |
689 | st->ss->free_super(st); | |
c30e5369 N |
690 | if (auto_assem) |
691 | goto try_again; | |
692 | return 1; | |
8a46fe84 | 693 | } |
c30e5369 | 694 | ioctl(mdfd, STOP_ARRAY, NULL); /* just incase it was started but has no content */ |
8a46fe84 | 695 | |
9008ed1c N |
696 | #ifndef MDASSEMBLE |
697 | if (content != &info) { | |
698 | /* This is a member of a container. Try starting the array. */ | |
588bebfc AK |
699 | int err; |
700 | err = assemble_container_content(st, mdfd, content, runstop, | |
49680258 N |
701 | chosen_name, verbose, |
702 | backup_file); | |
588bebfc | 703 | close(mdfd); |
588bebfc | 704 | return err; |
9008ed1c N |
705 | } |
706 | #endif | |
811e6cbe | 707 | /* Ok, no bad inconsistancy, we can try updating etc */ |
bf4fb153 | 708 | bitmap_done = 0; |
6e46bf34 | 709 | content->update_private = NULL; |
d7f7ebb7 | 710 | devices = malloc(num_devs * sizeof(*devices)); |
02e7c5b7 | 711 | devmap = calloc(num_devs * content->array.raid_disks, 1); |
da6b5ca9 | 712 | for (tmpdev = devlist; tmpdev; tmpdev=tmpdev->next) if (tmpdev->used == 1) { |
811e6cbe NB |
713 | char *devname = tmpdev->devname; |
714 | struct stat stb; | |
5787fa49 | 715 | /* looks like a good enough match to update the super block if needed */ |
d1f1011b | 716 | #ifndef MDASSEMBLE |
5787fa49 | 717 | if (update) { |
811e6cbe | 718 | int dfd; |
4b1ac34b NB |
719 | /* prepare useful information in info structures */ |
720 | struct stat stb2; | |
3da92f27 | 721 | struct supertype *tst; |
1e2b2765 | 722 | int err; |
4b1ac34b | 723 | fstat(mdfd, &stb2); |
7d99579f NB |
724 | |
725 | if (strcmp(update, "uuid")==0 && | |
726 | !ident->uuid_set) { | |
727 | int rfd; | |
728 | if ((rfd = open("/dev/urandom", O_RDONLY)) < 0 || | |
729 | read(rfd, ident->uuid, 16) != 16) { | |
730 | *(__u32*)(ident->uuid) = random(); | |
731 | *(__u32*)(ident->uuid+1) = random(); | |
732 | *(__u32*)(ident->uuid+2) = random(); | |
733 | *(__u32*)(ident->uuid+3) = random(); | |
734 | } | |
735 | if (rfd >= 0) close(rfd); | |
7d99579f | 736 | } |
811e6cbe NB |
737 | dfd = dev_open(devname, O_RDWR|O_EXCL); |
738 | ||
3da92f27 | 739 | tst = dup_super(st); |
9f22b13f N |
740 | if (dfd < 0 || tst->ss->load_super(tst, dfd, NULL) != 0) { |
741 | fprintf(stderr, Name ": cannot re-read metadata from %s - aborting\n", | |
742 | devname); | |
743 | if (dfd >= 0) | |
744 | close(dfd); | |
745 | close(mdfd); | |
d7f7ebb7 | 746 | free(devices); |
02e7c5b7 | 747 | free(devmap); |
9f22b13f N |
748 | return 1; |
749 | } | |
02e7c5b7 | 750 | tst->ss->getinfo_super(tst, content, devmap + devcnt * content->array.raid_disks); |
811e6cbe | 751 | |
98dbd966 DW |
752 | memcpy(content->uuid, ident->uuid, 16); |
753 | strcpy(content->name, ident->name); | |
754 | content->array.md_minor = minor(stb2.st_rdev); | |
811e6cbe | 755 | |
1e2b2765 N |
756 | if (strcmp(update, "byteorder") == 0) |
757 | err = 0; | |
758 | else | |
759 | err = tst->ss->update_super(tst, content, update, | |
760 | devname, verbose, | |
761 | ident->uuid_set, | |
762 | homehost); | |
763 | if (err < 0) { | |
764 | fprintf(stderr, | |
765 | Name ": --update=%s not understood" | |
766 | " for %s metadata\n", | |
767 | update, tst->ss->name); | |
768 | tst->ss->free_super(tst); | |
769 | free(tst); | |
770 | close(mdfd); | |
771 | close(dfd); | |
d7f7ebb7 | 772 | free(devices); |
02e7c5b7 | 773 | free(devmap); |
1e2b2765 N |
774 | return 1; |
775 | } | |
e5eac01f NB |
776 | if (strcmp(update, "uuid")==0 && |
777 | !ident->uuid_set) { | |
778 | ident->uuid_set = 1; | |
98dbd966 | 779 | memcpy(ident->uuid, content->uuid, 16); |
e5eac01f | 780 | } |
1e2b2765 | 781 | if (tst->ss->store_super(tst, dfd)) |
5787fa49 NB |
782 | fprintf(stderr, Name ": Could not re-write superblock on %s.\n", |
783 | devname); | |
1e2b2765 | 784 | close(dfd); |
8131b493 NB |
785 | |
786 | if (strcmp(update, "uuid")==0 && | |
bf4fb153 | 787 | ident->bitmap_fd >= 0 && !bitmap_done) { |
3da92f27 | 788 | if (bitmap_update_uuid(ident->bitmap_fd, |
98dbd966 | 789 | content->uuid, |
3da92f27 | 790 | tst->ss->swapuuid) != 0) |
bf4fb153 NB |
791 | fprintf(stderr, Name ": Could not update uuid on external bitmap.\n"); |
792 | else | |
793 | bitmap_done = 1; | |
794 | } | |
3da92f27 | 795 | tst->ss->free_super(tst); |
d1f1011b NB |
796 | } else |
797 | #endif | |
798 | { | |
30e1b9a5 | 799 | struct supertype *tst = dup_super(st); |
da6b5ca9 NB |
800 | int dfd; |
801 | dfd = dev_open(devname, O_RDWR|O_EXCL); | |
802 | ||
9f22b13f N |
803 | if (dfd < 0 || tst->ss->load_super(tst, dfd, NULL) != 0) { |
804 | fprintf(stderr, Name ": cannot re-read metadata from %s - aborting\n", | |
805 | devname); | |
806 | if (dfd >= 0) | |
807 | close(dfd); | |
808 | close(mdfd); | |
d7f7ebb7 | 809 | free(devices); |
02e7c5b7 | 810 | free(devmap); |
9f22b13f N |
811 | return 1; |
812 | } | |
02e7c5b7 | 813 | tst->ss->getinfo_super(tst, content, devmap + devcnt * content->array.raid_disks); |
3da92f27 | 814 | tst->ss->free_super(tst); |
da6b5ca9 | 815 | close(dfd); |
5787fa49 NB |
816 | } |
817 | ||
811e6cbe NB |
818 | stat(devname, &stb); |
819 | ||
dab6685f | 820 | if (verbose > 0) |
cd29a5c8 | 821 | fprintf(stderr, Name ": %s is identified as a member of %s, slot %d.\n", |
98dbd966 | 822 | devname, mddev, content->disk.raid_disk); |
64c4757e | 823 | devices[devcnt].devname = devname; |
64c4757e | 824 | devices[devcnt].uptodate = 0; |
98dbd966 | 825 | devices[devcnt].i = *content; |
213ee40b NB |
826 | devices[devcnt].i.disk.major = major(stb.st_rdev); |
827 | devices[devcnt].i.disk.minor = minor(stb.st_rdev); | |
64c4757e | 828 | if (most_recent < devcnt) { |
213ee40b NB |
829 | if (devices[devcnt].i.events |
830 | > devices[most_recent].i.events) | |
64c4757e NB |
831 | most_recent = devcnt; |
832 | } | |
df0d4ea0 | 833 | if (content->array.level == LEVEL_MULTIPATH) |
5787fa49 NB |
834 | /* with multipath, the raid_disk from the superblock is meaningless */ |
835 | i = devcnt; | |
836 | else | |
213ee40b | 837 | i = devices[devcnt].i.disk.raid_disk; |
308e1801 | 838 | if (i+1 == 0) { |
98dbd966 DW |
839 | if (nextspare < content->array.raid_disks) |
840 | nextspare = content->array.raid_disks; | |
308e1801 | 841 | i = nextspare++; |
08110d41 | 842 | } else { |
98dbd966 | 843 | if (i >= content->array.raid_disks && |
08110d41 NB |
844 | i >= nextspare) |
845 | nextspare = i+1; | |
308e1801 | 846 | } |
98c6faba | 847 | if (i < 10000) { |
56eedc1a | 848 | if (i >= bestcnt) { |
f21e18ca | 849 | int newbestcnt = i+10; |
56eedc1a | 850 | int *newbest = malloc(sizeof(int)*newbestcnt); |
f21e18ca | 851 | int c; |
56eedc1a NB |
852 | for (c=0; c < newbestcnt; c++) |
853 | if (c < bestcnt) | |
854 | newbest[c] = best[c]; | |
855 | else | |
856 | newbest[c] = -1; | |
857 | if (best)free(best); | |
858 | best = newbest; | |
859 | bestcnt = newbestcnt; | |
860 | } | |
6a255b69 | 861 | if (best[i] >=0 && |
213ee40b NB |
862 | devices[best[i]].i.events |
863 | == devices[devcnt].i.events | |
864 | && (devices[best[i]].i.disk.minor | |
865 | != devices[devcnt].i.disk.minor) | |
b8ac1967 | 866 | && st->ss == &super0 |
98dbd966 | 867 | && content->array.level != LEVEL_MULTIPATH) { |
6a255b69 NB |
868 | /* two different devices with identical superblock. |
869 | * Could be a mis-detection caused by overlapping | |
870 | * partitions. fail-safe. | |
871 | */ | |
872 | fprintf(stderr, Name ": WARNING %s and %s appear" | |
873 | " to have very similar superblocks.\n" | |
874 | " If they are really different, " | |
875 | "please --zero the superblock on one\n" | |
d2df86e0 NB |
876 | " If they are the same or overlap," |
877 | " please remove one from %s.\n", | |
878 | devices[best[i]].devname, devname, | |
879 | inargv ? "the list" : | |
880 | "the\n DEVICE list in mdadm.conf" | |
881 | ); | |
7f91af49 | 882 | close(mdfd); |
d7f7ebb7 | 883 | free(devices); |
02e7c5b7 | 884 | free(devmap); |
6a255b69 NB |
885 | return 1; |
886 | } | |
52826846 | 887 | if (best[i] == -1 |
213ee40b NB |
888 | || (devices[best[i]].i.events |
889 | < devices[devcnt].i.events)) | |
52826846 | 890 | best[i] = devcnt; |
56eedc1a | 891 | } |
64c4757e | 892 | devcnt++; |
df37ffc0 | 893 | } |
6e46bf34 DW |
894 | free(content->update_private); |
895 | content->update_private = NULL; | |
4b1ac34b | 896 | |
64c4757e | 897 | if (devcnt == 0) { |
682c7051 | 898 | fprintf(stderr, Name ": no devices found for %s\n", |
64c4757e | 899 | mddev); |
3d2b16e7 NB |
900 | if (st) |
901 | st->ss->free_super(st); | |
7f91af49 | 902 | close(mdfd); |
d7f7ebb7 | 903 | free(devices); |
02e7c5b7 | 904 | free(devmap); |
64c4757e NB |
905 | return 1; |
906 | } | |
4b1ac34b | 907 | |
3d2b16e7 NB |
908 | if (update && strcmp(update, "byteorder")==0) |
909 | st->minor_version = 90; | |
910 | ||
a5d85af7 | 911 | st->ss->getinfo_super(st, content, NULL); |
98dbd966 | 912 | clean = content->array.state & 1; |
4b1ac34b | 913 | |
64c4757e NB |
914 | /* now we have some devices that might be suitable. |
915 | * I wonder how many | |
916 | */ | |
98dbd966 DW |
917 | avail = malloc(content->array.raid_disks); |
918 | memset(avail, 0, content->array.raid_disks); | |
64c4757e | 919 | okcnt = 0; |
52826846 | 920 | sparecnt=0; |
1ff98339 | 921 | rebuilding_cnt=0; |
f21e18ca | 922 | for (i=0; i< bestcnt; i++) { |
64c4757e | 923 | int j = best[i]; |
ee04451c NB |
924 | int event_margin = 1; /* always allow a difference of '1' |
925 | * like the kernel does | |
926 | */ | |
64c4757e | 927 | if (j < 0) continue; |
d013a55e NB |
928 | /* note: we ignore error flags in multipath arrays |
929 | * as they don't make sense | |
930 | */ | |
df0d4ea0 | 931 | if (content->array.level != LEVEL_MULTIPATH) |
f22385f9 | 932 | if (!(devices[j].i.disk.state & (1<<MD_DISK_ACTIVE))) { |
213ee40b | 933 | if (!(devices[j].i.disk.state |
ed7fc6b4 AC |
934 | & (1<<MD_DISK_FAULTY))) { |
935 | devices[j].uptodate = 1; | |
aa88f531 | 936 | sparecnt++; |
ed7fc6b4 | 937 | } |
d013a55e | 938 | continue; |
aa88f531 | 939 | } |
02e7c5b7 N |
940 | /* If this devices thinks that 'most_recent' has failed, then |
941 | * we must reject this device. | |
942 | */ | |
943 | if (j != most_recent && | |
944 | content->array.raid_disks > 0 && | |
945 | devices[most_recent].i.disk.raid_disk >= 0 && | |
946 | devmap[j * content->array.raid_disks + devices[most_recent].i.disk.raid_disk] == 0) { | |
947 | if (verbose > -1) | |
948 | fprintf(stderr, Name ": ignoring %s as it reports %s as failed\n", | |
949 | devices[j].devname, devices[most_recent].devname); | |
950 | best[i] = -1; | |
951 | continue; | |
952 | } | |
213ee40b NB |
953 | if (devices[j].i.events+event_margin >= |
954 | devices[most_recent].i.events) { | |
64c4757e | 955 | devices[j].uptodate = 1; |
1ff98339 | 956 | if (i < content->array.raid_disks) { |
dcc4210f DW |
957 | if (devices[j].i.recovery_start == MaxSector || |
958 | (content->reshape_active && | |
959 | j >= content->array.raid_disks - content->delta_disks)) { | |
1ff98339 N |
960 | okcnt++; |
961 | avail[i]=1; | |
962 | } else | |
963 | rebuilding_cnt++; | |
265e0f17 | 964 | } else |
52826846 | 965 | sparecnt++; |
64c4757e NB |
966 | } |
967 | } | |
02e7c5b7 | 968 | free(devmap); |
98dbd966 DW |
969 | while (force && !enough(content->array.level, content->array.raid_disks, |
970 | content->array.layout, 1, | |
265e0f17 | 971 | avail, okcnt)) { |
64c4757e NB |
972 | /* Choose the newest best drive which is |
973 | * not up-to-date, update the superblock | |
974 | * and add it. | |
975 | */ | |
52826846 | 976 | int fd; |
3da92f27 | 977 | struct supertype *tst; |
f21e18ca | 978 | unsigned long long current_events; |
cd29a5c8 | 979 | chosen_drive = -1; |
f21e18ca | 980 | for (i = 0; i < content->array.raid_disks && i < bestcnt; i++) { |
52826846 NB |
981 | int j = best[i]; |
982 | if (j>=0 && | |
983 | !devices[j].uptodate && | |
921d9e16 | 984 | devices[j].i.recovery_start == MaxSector && |
52826846 | 985 | (chosen_drive < 0 || |
213ee40b NB |
986 | devices[j].i.events |
987 | > devices[chosen_drive].i.events)) | |
52826846 NB |
988 | chosen_drive = j; |
989 | } | |
990 | if (chosen_drive < 0) | |
991 | break; | |
213ee40b | 992 | current_events = devices[chosen_drive].i.events; |
c5a6f9a6 | 993 | add_another: |
dab6685f NB |
994 | if (verbose >= 0) |
995 | fprintf(stderr, Name ": forcing event count in %s(%d) from %d upto %d\n", | |
213ee40b NB |
996 | devices[chosen_drive].devname, |
997 | devices[chosen_drive].i.disk.raid_disk, | |
998 | (int)(devices[chosen_drive].i.events), | |
999 | (int)(devices[most_recent].i.events)); | |
8b0dabea | 1000 | fd = dev_open(devices[chosen_drive].devname, O_RDWR|O_EXCL); |
52826846 NB |
1001 | if (fd < 0) { |
1002 | fprintf(stderr, Name ": Couldn't open %s for write - not updating\n", | |
1003 | devices[chosen_drive].devname); | |
213ee40b | 1004 | devices[chosen_drive].i.events = 0; |
52826846 NB |
1005 | continue; |
1006 | } | |
3da92f27 | 1007 | tst = dup_super(st); |
60b435db | 1008 | if (tst->ss->load_super(tst,fd, NULL)) { |
52826846 NB |
1009 | close(fd); |
1010 | fprintf(stderr, Name ": RAID superblock disappeared from %s - not updating.\n", | |
1011 | devices[chosen_drive].devname); | |
213ee40b | 1012 | devices[chosen_drive].i.events = 0; |
52826846 NB |
1013 | continue; |
1014 | } | |
98dbd966 DW |
1015 | content->events = devices[most_recent].i.events; |
1016 | tst->ss->update_super(tst, content, "force-one", | |
67a8c82d NB |
1017 | devices[chosen_drive].devname, verbose, |
1018 | 0, NULL); | |
4b1ac34b | 1019 | |
3da92f27 | 1020 | if (tst->ss->store_super(tst, fd)) { |
52826846 NB |
1021 | close(fd); |
1022 | fprintf(stderr, Name ": Could not re-write superblock on %s\n", | |
1023 | devices[chosen_drive].devname); | |
213ee40b | 1024 | devices[chosen_drive].i.events = 0; |
3da92f27 | 1025 | tst->ss->free_super(tst); |
52826846 NB |
1026 | continue; |
1027 | } | |
1028 | close(fd); | |
213ee40b | 1029 | devices[chosen_drive].i.events = devices[most_recent].i.events; |
52826846 | 1030 | devices[chosen_drive].uptodate = 1; |
265e0f17 | 1031 | avail[chosen_drive] = 1; |
52826846 | 1032 | okcnt++; |
3da92f27 | 1033 | tst->ss->free_super(tst); |
c5a6f9a6 NB |
1034 | |
1035 | /* If there are any other drives of the same vintage, | |
1036 | * add them in as well. We can't lose and we might gain | |
1037 | */ | |
f21e18ca | 1038 | for (i = 0; i < content->array.raid_disks && i < bestcnt ; i++) { |
c5a6f9a6 NB |
1039 | int j = best[i]; |
1040 | if (j >= 0 && | |
1041 | !devices[j].uptodate && | |
213ee40b | 1042 | devices[j].i.events == current_events) { |
c5a6f9a6 NB |
1043 | chosen_drive = j; |
1044 | goto add_another; | |
1045 | } | |
1046 | } | |
64c4757e | 1047 | } |
52826846 NB |
1048 | |
1049 | /* Now we want to look at the superblock which the kernel will base things on | |
1050 | * and compare the devices that we think are working with the devices that the | |
1051 | * superblock thinks are working. | |
1052 | * If there are differences and --force is given, then update this chosen | |
1053 | * superblock. | |
1054 | */ | |
cd29a5c8 | 1055 | chosen_drive = -1; |
3da92f27 | 1056 | st->ss->free_super(st); |
56eedc1a | 1057 | for (i=0; chosen_drive < 0 && i<bestcnt; i++) { |
52826846 NB |
1058 | int j = best[i]; |
1059 | int fd; | |
4b1ac34b | 1060 | |
52826846 NB |
1061 | if (j<0) |
1062 | continue; | |
1063 | if (!devices[j].uptodate) | |
1064 | continue; | |
a28232b8 N |
1065 | if (devices[j].i.events < devices[most_recent].i.events) |
1066 | continue; | |
52826846 | 1067 | chosen_drive = j; |
8b0dabea | 1068 | if ((fd=dev_open(devices[j].devname, O_RDONLY|O_EXCL))< 0) { |
52826846 NB |
1069 | fprintf(stderr, Name ": Cannot open %s: %s\n", |
1070 | devices[j].devname, strerror(errno)); | |
7f91af49 | 1071 | close(mdfd); |
d7f7ebb7 | 1072 | free(devices); |
52826846 NB |
1073 | return 1; |
1074 | } | |
3da92f27 | 1075 | if (st->ss->load_super(st,fd, NULL)) { |
52826846 NB |
1076 | close(fd); |
1077 | fprintf(stderr, Name ": RAID superblock has disappeared from %s\n", | |
1078 | devices[j].devname); | |
7f91af49 | 1079 | close(mdfd); |
d7f7ebb7 | 1080 | free(devices); |
52826846 NB |
1081 | return 1; |
1082 | } | |
1083 | close(fd); | |
1084 | } | |
3da92f27 | 1085 | if (st->sb == NULL) { |
4b1ac34b | 1086 | fprintf(stderr, Name ": No suitable drives found for %s\n", mddev); |
7f91af49 | 1087 | close(mdfd); |
d7f7ebb7 | 1088 | free(devices); |
4b1ac34b NB |
1089 | return 1; |
1090 | } | |
a5d85af7 | 1091 | st->ss->getinfo_super(st, content, NULL); |
f35f2525 | 1092 | #ifndef MDASSEMBLE |
98dbd966 | 1093 | sysfs_init(content, mdfd, 0); |
f35f2525 | 1094 | #endif |
56eedc1a | 1095 | for (i=0; i<bestcnt; i++) { |
52826846 | 1096 | int j = best[i]; |
98c6faba | 1097 | unsigned int desired_state; |
11a3e71d | 1098 | |
98dbd966 | 1099 | if (i < content->array.raid_disks) |
11a3e71d NB |
1100 | desired_state = (1<<MD_DISK_ACTIVE) | (1<<MD_DISK_SYNC); |
1101 | else | |
1102 | desired_state = 0; | |
1103 | ||
52826846 NB |
1104 | if (j<0) |
1105 | continue; | |
1106 | if (!devices[j].uptodate) | |
1107 | continue; | |
4b1ac34b | 1108 | |
213ee40b | 1109 | devices[j].i.disk.state = desired_state; |
4e9a6ff7 N |
1110 | if (!(devices[j].i.array.state & 1)) |
1111 | clean = 0; | |
213ee40b NB |
1112 | |
1113 | if (st->ss->update_super(st, &devices[j].i, "assemble", NULL, | |
68c7d6d7 | 1114 | verbose, 0, NULL)) { |
52826846 | 1115 | if (force) { |
dab6685f NB |
1116 | if (verbose >= 0) |
1117 | fprintf(stderr, Name ": " | |
1118 | "clearing FAULTY flag for device %d in %s for %s\n", | |
1119 | j, mddev, devices[j].devname); | |
4b1ac34b | 1120 | change = 1; |
52826846 | 1121 | } else { |
dab6685f NB |
1122 | if (verbose >= -1) |
1123 | fprintf(stderr, Name ": " | |
1124 | "device %d in %s has wrong state in superblock, but %s seems ok\n", | |
1125 | i, mddev, devices[j].devname); | |
52826846 NB |
1126 | } |
1127 | } | |
4b1ac34b | 1128 | #if 0 |
213ee40b | 1129 | if (!(super.disks[i].i.disk.state & (1 << MD_DISK_FAULTY))) { |
52826846 NB |
1130 | fprintf(stderr, Name ": devices %d of %s is not marked FAULTY in superblock, but cannot be found\n", |
1131 | i, mddev); | |
1132 | } | |
4b1ac34b | 1133 | #endif |
52826846 | 1134 | } |
c5a6f9a6 | 1135 | if (force && !clean && |
98dbd966 DW |
1136 | !enough(content->array.level, content->array.raid_disks, |
1137 | content->array.layout, clean, | |
c5a6f9a6 | 1138 | avail, okcnt)) { |
98dbd966 | 1139 | change += st->ss->update_super(st, content, "force-array", |
67a8c82d NB |
1140 | devices[chosen_drive].devname, verbose, |
1141 | 0, NULL); | |
583315d9 | 1142 | clean = 1; |
d013a55e | 1143 | } |
52826846 | 1144 | |
4b1ac34b | 1145 | if (change) { |
52826846 | 1146 | int fd; |
8b0dabea | 1147 | fd = dev_open(devices[chosen_drive].devname, O_RDWR|O_EXCL); |
52826846 | 1148 | if (fd < 0) { |
353632d9 | 1149 | fprintf(stderr, Name ": Could not open %s for write - cannot Assemble array.\n", |
52826846 | 1150 | devices[chosen_drive].devname); |
7f91af49 | 1151 | close(mdfd); |
d7f7ebb7 | 1152 | free(devices); |
52826846 NB |
1153 | return 1; |
1154 | } | |
3da92f27 | 1155 | if (st->ss->store_super(st, fd)) { |
52826846 NB |
1156 | close(fd); |
1157 | fprintf(stderr, Name ": Could not re-write superblock on %s\n", | |
1158 | devices[chosen_drive].devname); | |
7f91af49 | 1159 | close(mdfd); |
d7f7ebb7 | 1160 | free(devices); |
52826846 NB |
1161 | return 1; |
1162 | } | |
a28232b8 N |
1163 | if (verbose >= 0) |
1164 | fprintf(stderr, Name ": Marking array %s as 'clean'\n", | |
1165 | mddev); | |
52826846 | 1166 | close(fd); |
52826846 NB |
1167 | } |
1168 | ||
353632d9 NB |
1169 | /* If we are in the middle of a reshape we may need to restore saved data |
1170 | * that was moved aside due to the reshape overwriting live data | |
1171 | * The code of doing this lives in Grow.c | |
1172 | */ | |
39c5a909 | 1173 | #ifndef MDASSEMBLE |
98dbd966 | 1174 | if (content->reshape_active) { |
353632d9 NB |
1175 | int err = 0; |
1176 | int *fdlist = malloc(sizeof(int)* bestcnt); | |
cd77ac4e | 1177 | if (verbose > 0) |
ea0ebe96 N |
1178 | fprintf(stderr, Name ":%s has an active reshape - checking " |
1179 | "if critical section needs to be restored\n", | |
1180 | chosen_name); | |
353632d9 NB |
1181 | for (i=0; i<bestcnt; i++) { |
1182 | int j = best[i]; | |
1183 | if (j >= 0) { | |
1184 | fdlist[i] = dev_open(devices[j].devname, O_RDWR|O_EXCL); | |
1185 | if (fdlist[i] < 0) { | |
1186 | fprintf(stderr, Name ": Could not open %s for write - cannot Assemble array.\n", | |
1187 | devices[j].devname); | |
1188 | err = 1; | |
1189 | break; | |
1190 | } | |
1191 | } else | |
1192 | fdlist[i] = -1; | |
1193 | } | |
87f26d14 N |
1194 | if (!err) { |
1195 | err = Grow_restart(st, content, fdlist, bestcnt, | |
1196 | backup_file, verbose > 0); | |
1197 | if (err && invalid_backup) { | |
1198 | if (verbose > 0) | |
1199 | fprintf(stderr, Name ": continuing" | |
1200 | " without restoring backup\n"); | |
1201 | err = 0; | |
1202 | } | |
1203 | } | |
353632d9 NB |
1204 | while (i>0) { |
1205 | i--; | |
1206 | if (fdlist[i]>=0) close(fdlist[i]); | |
1207 | } | |
1208 | if (err) { | |
1209 | fprintf(stderr, Name ": Failed to restore critical section for reshape, sorry.\n"); | |
e9e43ec3 N |
1210 | if (backup_file == NULL) |
1211 | fprintf(stderr," Possibly you needed to specify the --backup-file\n"); | |
7f91af49 | 1212 | close(mdfd); |
d7f7ebb7 | 1213 | free(devices); |
353632d9 NB |
1214 | return err; |
1215 | } | |
1216 | } | |
39c5a909 | 1217 | #endif |
aa88f531 NB |
1218 | /* count number of in-sync devices according to the superblock. |
1219 | * We must have this number to start the array without -s or -R | |
1220 | */ | |
98dbd966 | 1221 | req_cnt = content->array.working_disks; |
aa88f531 | 1222 | |
64c4757e NB |
1223 | /* Almost ready to actually *do* something */ |
1224 | if (!old_linux) { | |
fbf8a0b7 | 1225 | int rv; |
a19c88b8 | 1226 | |
a04d5763 N |
1227 | /* First, fill in the map, so that udev can find our name |
1228 | * as soon as we become active. | |
1229 | */ | |
98dbd966 DW |
1230 | map_update(NULL, fd2devnum(mdfd), content->text_version, |
1231 | content->uuid, chosen_name); | |
a04d5763 | 1232 | |
98dbd966 | 1233 | rv = set_array_info(mdfd, st, content); |
fbf8a0b7 | 1234 | if (rv) { |
f35f2525 | 1235 | fprintf(stderr, Name ": failed to set array info for %s: %s\n", |
64c4757e | 1236 | mddev, strerror(errno)); |
24af7a87 | 1237 | ioctl(mdfd, STOP_ARRAY, NULL); |
7f91af49 | 1238 | close(mdfd); |
d7f7ebb7 | 1239 | free(devices); |
64c4757e NB |
1240 | return 1; |
1241 | } | |
11484a63 | 1242 | if (ident->bitmap_fd >= 0) { |
c82f047c NB |
1243 | if (ioctl(mdfd, SET_BITMAP_FILE, ident->bitmap_fd) != 0) { |
1244 | fprintf(stderr, Name ": SET_BITMAP_FILE failed.\n"); | |
24af7a87 | 1245 | ioctl(mdfd, STOP_ARRAY, NULL); |
7f91af49 | 1246 | close(mdfd); |
d7f7ebb7 | 1247 | free(devices); |
c82f047c NB |
1248 | return 1; |
1249 | } | |
7ef02d01 NB |
1250 | } else if (ident->bitmap_file) { |
1251 | /* From config file */ | |
1252 | int bmfd = open(ident->bitmap_file, O_RDWR); | |
1253 | if (bmfd < 0) { | |
1254 | fprintf(stderr, Name ": Could not open bitmap file %s\n", | |
1255 | ident->bitmap_file); | |
24af7a87 | 1256 | ioctl(mdfd, STOP_ARRAY, NULL); |
7f91af49 | 1257 | close(mdfd); |
d7f7ebb7 | 1258 | free(devices); |
7ef02d01 NB |
1259 | return 1; |
1260 | } | |
1261 | if (ioctl(mdfd, SET_BITMAP_FILE, bmfd) != 0) { | |
1262 | fprintf(stderr, Name ": Failed to set bitmapfile for %s\n", mddev); | |
1263 | close(bmfd); | |
24af7a87 | 1264 | ioctl(mdfd, STOP_ARRAY, NULL); |
7f91af49 | 1265 | close(mdfd); |
d7f7ebb7 | 1266 | free(devices); |
7ef02d01 NB |
1267 | return 1; |
1268 | } | |
1269 | close(bmfd); | |
c82f047c | 1270 | } |
7ef02d01 | 1271 | |
52826846 | 1272 | /* First, add the raid disks, but add the chosen one last */ |
56eedc1a | 1273 | for (i=0; i<= bestcnt; i++) { |
52826846 | 1274 | int j; |
56eedc1a | 1275 | if (i < bestcnt) { |
52826846 NB |
1276 | j = best[i]; |
1277 | if (j == chosen_drive) | |
1278 | continue; | |
1279 | } else | |
1280 | j = chosen_drive; | |
1281 | ||
56eedc1a | 1282 | if (j >= 0 /* && devices[j].uptodate */) { |
484ae54d N |
1283 | int dfd = dev_open(devices[j].devname, |
1284 | O_RDWR|O_EXCL); | |
1285 | if (dfd >= 0) { | |
1286 | remove_partitions(dfd); | |
1287 | close(dfd); | |
1288 | } | |
98dbd966 | 1289 | rv = add_disk(mdfd, st, content, &devices[j].i); |
7801ac20 | 1290 | |
a19c88b8 | 1291 | if (rv) { |
213ee40b NB |
1292 | fprintf(stderr, Name ": failed to add " |
1293 | "%s to %s: %s\n", | |
64c4757e NB |
1294 | devices[j].devname, |
1295 | mddev, | |
1296 | strerror(errno)); | |
98dbd966 | 1297 | if (i < content->array.raid_disks |
213ee40b | 1298 | || i == bestcnt) |
52826846 NB |
1299 | okcnt--; |
1300 | else | |
1301 | sparecnt--; | |
dab6685f | 1302 | } else if (verbose > 0) |
213ee40b NB |
1303 | fprintf(stderr, Name ": added %s " |
1304 | "to %s as %d\n", | |
1305 | devices[j].devname, mddev, | |
1306 | devices[j].i.disk.raid_disk); | |
98dbd966 | 1307 | } else if (verbose > 0 && i < content->array.raid_disks) |
213ee40b NB |
1308 | fprintf(stderr, Name ": no uptodate device for " |
1309 | "slot %d of %s\n", | |
64c4757e NB |
1310 | i, mddev); |
1311 | } | |
aba69144 | 1312 | |
98dbd966 | 1313 | if (content->array.level == LEVEL_CONTAINER) { |
598f0d58 NB |
1314 | if (verbose >= 0) { |
1315 | fprintf(stderr, Name ": Container %s has been " | |
1316 | "assembled with %d drive%s", | |
57ed8c91 | 1317 | mddev, okcnt+sparecnt, okcnt+sparecnt==1?"":"s"); |
f21e18ca | 1318 | if (okcnt < (unsigned)content->array.raid_disks) |
598f0d58 | 1319 | fprintf(stderr, " (out of %d)", |
98dbd966 | 1320 | content->array.raid_disks); |
598f0d58 NB |
1321 | fprintf(stderr, "\n"); |
1322 | } | |
ac597b1c | 1323 | st->ss->free_super(st); |
98dbd966 | 1324 | sysfs_uevent(content, "change"); |
a7c6e3fb | 1325 | wait_for(chosen_name, mdfd); |
7f91af49 | 1326 | close(mdfd); |
d7f7ebb7 | 1327 | free(devices); |
598f0d58 NB |
1328 | return 0; |
1329 | } | |
1330 | ||
64c4757e | 1331 | if (runstop == 1 || |
b8a8ccf9 | 1332 | (runstop <= 0 && |
98dbd966 DW |
1333 | ( enough(content->array.level, content->array.raid_disks, |
1334 | content->array.layout, clean, avail, okcnt) && | |
1ff98339 | 1335 | (okcnt + rebuilding_cnt >= req_cnt || start_partial_ok) |
aa88f531 | 1336 | ))) { |
e9e43ec3 N |
1337 | /* This array is good-to-go. |
1338 | * If a reshape is in progress then we might need to | |
1339 | * continue monitoring it. In that case we start | |
1340 | * it read-only and let the grow code make it writable. | |
1341 | */ | |
1342 | int rv; | |
eb3929a4 | 1343 | #ifndef MDASSEMBLE |
e9e43ec3 N |
1344 | if (content->reshape_active && |
1345 | content->delta_disks <= 0) | |
1346 | rv = Grow_continue(mdfd, st, content, backup_file); | |
1347 | else | |
eb3929a4 | 1348 | #endif |
e9e43ec3 N |
1349 | rv = ioctl(mdfd, RUN_ARRAY, NULL); |
1350 | if (rv == 0) { | |
dab6685f NB |
1351 | if (verbose >= 0) { |
1352 | fprintf(stderr, Name ": %s has been started with %d drive%s", | |
1353 | mddev, okcnt, okcnt==1?"":"s"); | |
f21e18ca | 1354 | if (okcnt < (unsigned)content->array.raid_disks) |
98dbd966 | 1355 | fprintf(stderr, " (out of %d)", content->array.raid_disks); |
1ff98339 N |
1356 | if (rebuilding_cnt) |
1357 | fprintf(stderr, "%s %d rebuilding", sparecnt?",":" and", rebuilding_cnt); | |
dab6685f NB |
1358 | if (sparecnt) |
1359 | fprintf(stderr, " and %d spare%s", sparecnt, sparecnt==1?"":"s"); | |
1360 | fprintf(stderr, ".\n"); | |
1361 | } | |
8a659c33 N |
1362 | if (content->reshape_active && |
1363 | content->array.level >= 4 && | |
1364 | content->array.level <= 6) { | |
acee8e89 N |
1365 | /* might need to increase the size |
1366 | * of the stripe cache - default is 256 | |
1367 | */ | |
8a659c33 | 1368 | if (256 < 4 * (content->array.chunk_size/4096)) { |
acee8e89 N |
1369 | struct mdinfo *sra = sysfs_read(mdfd, 0, 0); |
1370 | if (sra) | |
1371 | sysfs_set_num(sra, NULL, | |
1372 | "stripe_cache_size", | |
8a659c33 | 1373 | (4 * content->array.chunk_size / 4096) + 1); |
acee8e89 N |
1374 | } |
1375 | } | |
7e83544b N |
1376 | if (okcnt < (unsigned)content->array.raid_disks) { |
1377 | /* If any devices did not get added | |
1378 | * because the kernel rejected them based | |
1379 | * on event count, try adding them | |
1380 | * again providing the action policy is | |
1381 | * 're-add' or greater. The bitmap | |
1382 | * might allow them to be included, or | |
1383 | * they will become spares. | |
1384 | */ | |
1385 | for (i = 0; i <= bestcnt; i++) { | |
1386 | int j = best[i]; | |
1387 | if (j >= 0 && !devices[j].uptodate) { | |
1388 | if (!disk_action_allows(&devices[j].i, st->ss->name, act_re_add)) | |
1389 | continue; | |
1390 | rv = add_disk(mdfd, st, content, | |
1391 | &devices[j].i); | |
1392 | if (rv == 0 && verbose >= 0) | |
1393 | fprintf(stderr, | |
1394 | Name ": %s has been re-added.\n", | |
1395 | devices[j].devname); | |
1396 | } | |
1397 | } | |
1398 | } | |
a7c6e3fb | 1399 | wait_for(mddev, mdfd); |
7f91af49 N |
1400 | close(mdfd); |
1401 | if (auto_assem) { | |
589395d6 | 1402 | int usecs = 1; |
589395d6 NB |
1403 | /* There is a nasty race with 'mdadm --monitor'. |
1404 | * If it opens this device before we close it, | |
1405 | * it gets an incomplete open on which IO | |
598f0d58 NB |
1406 | * doesn't work and the capacity is |
1407 | * wrong. | |
589395d6 NB |
1408 | * If we reopen (to check for layered devices) |
1409 | * before --monitor closes, we loose. | |
1410 | * | |
1411 | * So: wait upto 1 second for there to be | |
1412 | * a non-zero capacity. | |
1413 | */ | |
1414 | while (usecs < 1000) { | |
1415 | mdfd = open(mddev, O_RDONLY); | |
1416 | if (mdfd >= 0) { | |
beae1dfe NB |
1417 | unsigned long long size; |
1418 | if (get_dev_size(mdfd, NULL, &size) && | |
589395d6 NB |
1419 | size > 0) |
1420 | break; | |
1421 | close(mdfd); | |
1422 | } | |
1423 | usleep(usecs); | |
1424 | usecs <<= 1; | |
1425 | } | |
1426 | } | |
d7f7ebb7 | 1427 | free(devices); |
64c4757e | 1428 | return 0; |
82b27616 | 1429 | } |
682c7051 | 1430 | fprintf(stderr, Name ": failed to RUN_ARRAY %s: %s\n", |
64c4757e | 1431 | mddev, strerror(errno)); |
583315d9 | 1432 | |
98dbd966 DW |
1433 | if (!enough(content->array.level, content->array.raid_disks, |
1434 | content->array.layout, 1, avail, okcnt)) | |
583315d9 NB |
1435 | fprintf(stderr, Name ": Not enough devices to " |
1436 | "start the array.\n"); | |
98dbd966 DW |
1437 | else if (!enough(content->array.level, |
1438 | content->array.raid_disks, | |
1439 | content->array.layout, clean, | |
583315d9 NB |
1440 | avail, okcnt)) |
1441 | fprintf(stderr, Name ": Not enough devices to " | |
1442 | "start the array while not clean " | |
1443 | "- consider --force.\n"); | |
1444 | ||
7f91af49 | 1445 | if (auto_assem) |
1c203a4b | 1446 | ioctl(mdfd, STOP_ARRAY, NULL); |
7f91af49 | 1447 | close(mdfd); |
d7f7ebb7 | 1448 | free(devices); |
64c4757e NB |
1449 | return 1; |
1450 | } | |
82b27616 | 1451 | if (runstop == -1) { |
b8a8ccf9 | 1452 | fprintf(stderr, Name ": %s assembled from %d drive%s", |
52826846 | 1453 | mddev, okcnt, okcnt==1?"":"s"); |
f21e18ca | 1454 | if (okcnt != (unsigned)content->array.raid_disks) |
98dbd966 | 1455 | fprintf(stderr, " (out of %d)", content->array.raid_disks); |
b8a8ccf9 | 1456 | fprintf(stderr, ", but not started.\n"); |
7f91af49 | 1457 | close(mdfd); |
d7f7ebb7 | 1458 | free(devices); |
64c4757e | 1459 | return 0; |
82b27616 | 1460 | } |
4855f95c | 1461 | if (verbose >= -1) { |
dab6685f | 1462 | fprintf(stderr, Name ": %s assembled from %d drive%s", mddev, okcnt, okcnt==1?"":"s"); |
1ff98339 N |
1463 | if (rebuilding_cnt) |
1464 | fprintf(stderr, "%s %d rebuilding", sparecnt?", ":" and ", rebuilding_cnt); | |
dab6685f NB |
1465 | if (sparecnt) |
1466 | fprintf(stderr, " and %d spare%s", sparecnt, sparecnt==1?"":"s"); | |
98dbd966 DW |
1467 | if (!enough(content->array.level, content->array.raid_disks, |
1468 | content->array.layout, 1, avail, okcnt)) | |
dab6685f | 1469 | fprintf(stderr, " - not enough to start the array.\n"); |
98dbd966 DW |
1470 | else if (!enough(content->array.level, |
1471 | content->array.raid_disks, | |
1472 | content->array.layout, clean, | |
583315d9 NB |
1473 | avail, okcnt)) |
1474 | fprintf(stderr, " - not enough to start the " | |
1475 | "array while not clean - consider " | |
1476 | "--force.\n"); | |
dab6685f | 1477 | else { |
f21e18ca | 1478 | if (req_cnt == (unsigned)content->array.raid_disks) |
dab6685f NB |
1479 | fprintf(stderr, " - need all %d to start it", req_cnt); |
1480 | else | |
98dbd966 | 1481 | fprintf(stderr, " - need %d of %d to start", req_cnt, content->array.raid_disks); |
dab6685f NB |
1482 | fprintf(stderr, " (use --run to insist).\n"); |
1483 | } | |
aa88f531 | 1484 | } |
7f91af49 | 1485 | if (auto_assem) |
1c203a4b | 1486 | ioctl(mdfd, STOP_ARRAY, NULL); |
56a8da69 | 1487 | close(mdfd); |
d7f7ebb7 | 1488 | free(devices); |
64c4757e | 1489 | return 1; |
82b27616 | 1490 | } else { |
52826846 NB |
1491 | /* The "chosen_drive" is a good choice, and if necessary, the superblock has |
1492 | * been updated to point to the current locations of devices. | |
1493 | * so we can just start the array | |
82b27616 | 1494 | */ |
cd29a5c8 | 1495 | unsigned long dev; |
213ee40b NB |
1496 | dev = makedev(devices[chosen_drive].i.disk.major, |
1497 | devices[chosen_drive].i.disk.minor); | |
82b27616 NB |
1498 | if (ioctl(mdfd, START_ARRAY, dev)) { |
1499 | fprintf(stderr, Name ": Cannot start array: %s\n", | |
1500 | strerror(errno)); | |
1501 | } | |
aba69144 | 1502 | |
64c4757e | 1503 | } |
7f91af49 | 1504 | close(mdfd); |
d7f7ebb7 | 1505 | free(devices); |
e0d19036 | 1506 | return 0; |
64c4757e | 1507 | } |
6234c63c DW |
1508 | |
1509 | #ifndef MDASSEMBLE | |
1510 | int assemble_container_content(struct supertype *st, int mdfd, | |
1511 | struct mdinfo *content, int runstop, | |
49680258 N |
1512 | char *chosen_name, int verbose, |
1513 | char *backup_file) | |
6234c63c DW |
1514 | { |
1515 | struct mdinfo *dev, *sra; | |
1516 | int working = 0, preexist = 0; | |
882029c8 | 1517 | int expansion = 0; |
6234c63c | 1518 | struct map_ent *map = NULL; |
7af03341 | 1519 | int old_raid_disks; |
6234c63c DW |
1520 | |
1521 | sysfs_init(content, mdfd, 0); | |
1522 | ||
1523 | sra = sysfs_read(mdfd, 0, GET_VERSION); | |
1524 | if (sra == NULL || strcmp(sra->text_version, content->text_version) != 0) | |
588bebfc | 1525 | if (sysfs_set_array(content, md_get_version(mdfd)) != 0) |
6234c63c | 1526 | return 1; |
588bebfc | 1527 | |
b8063f07 AK |
1528 | if (content->reshape_active) |
1529 | block_subarray(content); | |
1530 | ||
6234c63c DW |
1531 | if (sra) |
1532 | sysfs_free(sra); | |
7af03341 | 1533 | old_raid_disks = content->array.raid_disks - content->delta_disks; |
6234c63c | 1534 | for (dev = content->devs; dev; dev = dev->next) |
14032016 | 1535 | if (sysfs_add_disk(content, dev, 1) == 0) { |
7af03341 | 1536 | if (dev->disk.raid_disk >= old_raid_disks && |
14032016 AK |
1537 | content->reshape_active) |
1538 | expansion++; | |
1539 | else | |
1540 | working++; | |
1541 | } else if (errno == EEXIST) | |
6234c63c | 1542 | preexist++; |
588bebfc | 1543 | if (working == 0) |
7cb2aa33 | 1544 | return 1;/* Nothing new, don't try to start */ |
588bebfc | 1545 | |
8b4e5ea9 N |
1546 | map_update(&map, fd2devnum(mdfd), |
1547 | content->text_version, | |
1548 | content->uuid, chosen_name); | |
1549 | ||
1550 | if (runstop > 0 || | |
882029c8 AK |
1551 | (working + preexist + expansion) >= |
1552 | content->array.working_disks) { | |
bb50e5d3 | 1553 | int err; |
a714580e | 1554 | |
49680258 N |
1555 | if (content->reshape_active) { |
1556 | int spare = content->array.raid_disks + expansion; | |
1557 | int i; | |
1558 | int *fdlist = malloc(sizeof(int) * | |
1559 | (working + expansion | |
1560 | + content->array.raid_disks)); | |
1561 | for (i=0; i<spare; i++) | |
1562 | fdlist[i] = -1; | |
1563 | for (dev = content->devs; dev; dev = dev->next) { | |
b8b8eda8 N |
1564 | char buf[20]; |
1565 | int fd; | |
1566 | sprintf(buf, "%d:%d", | |
1567 | dev->disk.major, | |
1568 | dev->disk.minor); | |
1569 | fd = dev_open(buf, O_RDWR); | |
1570 | ||
49680258 N |
1571 | if (dev->disk.raid_disk >= 0) |
1572 | fdlist[dev->disk.raid_disk] = fd; | |
1573 | else | |
1574 | fdlist[spare++] = fd; | |
1575 | } | |
1576 | err = Grow_restart(st, content, fdlist, spare, | |
1577 | backup_file, verbose > 0); | |
1578 | while (spare > 0) { | |
1579 | spare--; | |
1580 | if (fdlist[spare] >= 0) | |
1581 | close(fdlist[spare]); | |
1582 | } | |
1583 | if (err) { | |
1584 | fprintf(stderr, Name ": Failed to restore critical" | |
1585 | " section for reshape - sorry.\n"); | |
1586 | if (!backup_file) | |
1587 | fprintf(stderr, Name ": Possibly you need" | |
1588 | " to specify a --backup-file\n"); | |
1589 | return 1; | |
1590 | } | |
1591 | ||
1592 | err = Grow_continue(mdfd, st, content, backup_file); | |
1593 | } else switch(content->array.level) { | |
6234c63c DW |
1594 | case LEVEL_LINEAR: |
1595 | case LEVEL_MULTIPATH: | |
1596 | case 0: | |
bb50e5d3 N |
1597 | err = sysfs_set_str(content, NULL, "array_state", |
1598 | "active"); | |
6234c63c DW |
1599 | break; |
1600 | default: | |
bb50e5d3 | 1601 | err = sysfs_set_str(content, NULL, "array_state", |
6234c63c DW |
1602 | "readonly"); |
1603 | /* start mdmon if needed. */ | |
bb50e5d3 N |
1604 | if (!err) { |
1605 | if (!mdmon_running(st->container_dev)) | |
1606 | start_mdmon(st->container_dev); | |
983fff45 | 1607 | ping_monitor_by_id(st->container_dev); |
bb50e5d3 | 1608 | } |
6234c63c DW |
1609 | break; |
1610 | } | |
bb50e5d3 N |
1611 | if (!err) |
1612 | sysfs_set_safemode(content, content->safe_mode_delay); | |
6234c63c | 1613 | if (verbose >= 0) { |
bb50e5d3 N |
1614 | if (err) |
1615 | fprintf(stderr, Name | |
1616 | ": array %s now has %d devices", | |
1617 | chosen_name, working + preexist); | |
1618 | else | |
1619 | fprintf(stderr, Name | |
1620 | ": Started %s with %d devices", | |
1621 | chosen_name, working + preexist); | |
6234c63c DW |
1622 | if (preexist) |
1623 | fprintf(stderr, " (%d new)", working); | |
882029c8 AK |
1624 | if (expansion) |
1625 | fprintf(stderr, " ( + %d for expansion)", | |
1626 | expansion); | |
6234c63c DW |
1627 | fprintf(stderr, "\n"); |
1628 | } | |
bb50e5d3 | 1629 | if (!err) |
a7c6e3fb | 1630 | wait_for(chosen_name, mdfd); |
588bebfc | 1631 | return err; |
6234c63c | 1632 | /* FIXME should have an O_EXCL and wait for read-auto */ |
7cb2aa33 | 1633 | } else { |
6234c63c DW |
1634 | if (verbose >= 0) |
1635 | fprintf(stderr, Name | |
1636 | ": %s assembled with %d devices but " | |
1637 | "not started\n", | |
1638 | chosen_name, working); | |
7cb2aa33 N |
1639 | return 1; |
1640 | } | |
6234c63c DW |
1641 | } |
1642 | #endif | |
1643 |