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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, |
b76b30e0 | 141 | int verbose, int force, int freeze_reshape) |
64c4757e NB |
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; | |
87477e6d N |
421 | tst->ss->getinfo_super(tst, content, NULL); |
422 | ||
9008ed1c N |
423 | if (!parse_uuid(ident->container, uuid) || |
424 | !same_uuid(content->uuid, uuid, tst->ss->swapuuid)) { | |
425 | if (report_missmatch) | |
426 | fprintf(stderr, Name ": %s has wrong UUID to be required container\n", | |
427 | devname); | |
428 | goto loop; | |
429 | } | |
430 | } | |
431 | } | |
432 | /* It is worth looking inside this container. | |
433 | */ | |
7636b5a8 N |
434 | if (verbose > 0) |
435 | fprintf(stderr, Name ": looking in container %s\n", | |
436 | devname); | |
1415fe4b | 437 | |
88cef9b3 N |
438 | for (content = tst->ss->container_content(tst, NULL); |
439 | content; | |
440 | content = content->next) { | |
1415fe4b | 441 | |
a06d022d KW |
442 | /* do not assemble arrays that might have bad blocks */ |
443 | if (content->array.state & (1<<MD_SB_BBM_ERRORS)) { | |
444 | fprintf(stderr, Name ": BBM log found in metadata. " | |
445 | "Cannot activate array(s).\n"); | |
446 | tmpdev->used = 2; | |
447 | goto loop; | |
448 | } | |
88cef9b3 N |
449 | if (!ident_matches(ident, content, tst, |
450 | homehost, update, | |
451 | report_missmatch ? devname : NULL)) | |
452 | /* message already printed */; | |
453 | else if (is_member_busy(content->text_version)) { | |
454 | if (report_missmatch) | |
455 | fprintf(stderr, Name ": member %s in %s is already assembled\n", | |
456 | content->text_version, | |
457 | devname); | |
458 | } else | |
459 | break; | |
460 | } | |
461 | if (!content) { | |
f7ad3ccc | 462 | tmpdev->used = 2; |
88cef9b3 | 463 | goto loop; /* empty container */ |
fa031239 | 464 | } |
88cef9b3 | 465 | |
9008ed1c | 466 | st = tst; tst = NULL; |
4c1c3ad8 | 467 | if (!auto_assem && inargv && tmpdev->next != NULL) { |
9008ed1c N |
468 | fprintf(stderr, Name ": %s is a container, but is not " |
469 | "only device given: confused and aborting\n", | |
470 | devname); | |
471 | st->ss->free_super(st); | |
4e8d9f0a | 472 | dev_policy_free(pol); |
cbeeb0e5 | 473 | domain_free(domains); |
9008ed1c N |
474 | return 1; |
475 | } | |
7636b5a8 N |
476 | if (verbose > 0) |
477 | fprintf(stderr, Name ": found match on member %s in %s\n", | |
478 | content->text_version, devname); | |
bac0d92e | 479 | |
5083d66b N |
480 | /* make sure we finished the loop */ |
481 | tmpdev = NULL; | |
bac0d92e | 482 | goto loop; |
5083d66b | 483 | } else { |
bac0d92e | 484 | |
5083d66b | 485 | content = &info; |
5083d66b N |
486 | tst->ss->getinfo_super(tst, content, NULL); |
487 | ||
488 | if (!ident_matches(ident, content, tst, | |
489 | homehost, update, | |
490 | report_missmatch ? devname : NULL)) | |
df37ffc0 | 491 | goto loop; |
cbeeb0e5 | 492 | |
5083d66b N |
493 | if (st == NULL) |
494 | st = dup_super(tst); | |
495 | if (st->minor_version == -1) | |
496 | st->minor_version = tst->minor_version; | |
ed7fc6b4 AC |
497 | |
498 | if (memcmp(content->uuid, uuid_zero, | |
499 | sizeof(int[4])) == 0) { | |
500 | /* this is a floating spare. It cannot define | |
501 | * an array unless there are no more arrays of | |
502 | * this type to be found. It can be included | |
503 | * in an array of this type though. | |
504 | */ | |
505 | tmpdev->used = 3; | |
506 | goto loop; | |
507 | } | |
508 | ||
5083d66b N |
509 | if (st->ss != tst->ss || |
510 | st->minor_version != tst->minor_version || | |
511 | st->ss->compare_super(st, tst) != 0) { | |
512 | /* Some mismatch. If exactly one array matches this host, | |
513 | * we can resolve on that one. | |
514 | * Or, if we are auto assembling, we just ignore the second | |
515 | * for now. | |
516 | */ | |
517 | if (auto_assem) | |
518 | goto loop; | |
519 | if (homehost) { | |
520 | int first = st->ss->match_home(st, homehost); | |
521 | int last = tst->ss->match_home(tst, homehost); | |
522 | if (first != last && | |
523 | (first == 1 || last == 1)) { | |
524 | /* We can do something */ | |
525 | if (first) {/* just ignore this one */ | |
526 | if (report_missmatch) | |
527 | fprintf(stderr, Name ": %s misses out due to wrong homehost\n", | |
528 | devname); | |
529 | goto loop; | |
530 | } else { /* reject all those sofar */ | |
531 | struct mddev_dev *td; | |
532 | if (report_missmatch) | |
533 | fprintf(stderr, Name ": %s overrides previous devices due to good homehost\n", | |
534 | devname); | |
535 | for (td=devlist; td != tmpdev; td=td->next) | |
536 | if (td->used == 1) | |
537 | td->used = 0; | |
538 | tmpdev->used = 1; | |
539 | goto loop; | |
540 | } | |
83b6208e NB |
541 | } |
542 | } | |
5083d66b N |
543 | fprintf(stderr, Name ": superblock on %s doesn't match others - assembly aborted\n", |
544 | devname); | |
545 | tst->ss->free_super(tst); | |
546 | st->ss->free_super(st); | |
547 | dev_policy_free(pol); | |
cbeeb0e5 | 548 | domain_free(domains); |
5083d66b | 549 | return 1; |
83b6208e | 550 | } |
5083d66b | 551 | tmpdev->used = 1; |
64c4757e | 552 | } |
df37ffc0 | 553 | loop: |
cbeeb0e5 | 554 | /* Collect domain information from members only */ |
26b05aea AC |
555 | if (tmpdev && tmpdev->used == 1) { |
556 | if (!pol) | |
557 | pol = devnum_policy(stb.st_rdev); | |
cbeeb0e5 | 558 | domain_merge(&domains, pol, tst?tst->ss->name:NULL); |
26b05aea | 559 | } |
4e8d9f0a N |
560 | dev_policy_free(pol); |
561 | pol = NULL; | |
3d2b16e7 NB |
562 | if (tst) |
563 | tst->ss->free_super(tst); | |
811e6cbe NB |
564 | } |
565 | ||
ed7fc6b4 | 566 | /* Check if we found some imsm spares but no members */ |
3c7b4a25 CA |
567 | if ((auto_assem || |
568 | (ident->uuid_set && | |
569 | memcmp(uuid_zero, ident->uuid,sizeof(uuid_zero)) == 0)) && | |
570 | (!st || !st->sb)) | |
ed7fc6b4 AC |
571 | for (tmpdev = devlist; tmpdev; tmpdev = tmpdev->next) { |
572 | if (tmpdev->used != 3) | |
573 | continue; | |
574 | tmpdev->used = 1; | |
575 | content = &info; | |
576 | ||
577 | if (!st->sb) { | |
578 | /* we need sb from one of the spares */ | |
579 | int dfd = dev_open(tmpdev->devname, O_RDONLY); | |
580 | if (dfd < 0 || | |
581 | st->ss->load_super(st, dfd, NULL)) | |
582 | tmpdev->used = 2; | |
583 | if (dfd > 0) | |
584 | close(dfd); | |
585 | } | |
586 | } | |
587 | ||
cbeeb0e5 AC |
588 | /* Now reject spares that don't match domains of identified members */ |
589 | for (tmpdev = devlist; tmpdev; tmpdev = tmpdev->next) { | |
590 | struct stat stb; | |
591 | if (tmpdev->used != 3) | |
592 | continue; | |
593 | if (stat(tmpdev->devname, &stb)< 0) { | |
594 | fprintf(stderr, Name ": fstat failed for %s: %s\n", | |
595 | tmpdev->devname, strerror(errno)); | |
596 | tmpdev->used = 2; | |
597 | } else { | |
a5d10dce N |
598 | struct dev_policy *pol = devnum_policy(stb.st_rdev); |
599 | int dt = domain_test(domains, pol, NULL); | |
600 | if (inargv && dt != 0) | |
601 | /* take this spare as domains match | |
602 | * if there are any */ | |
603 | tmpdev->used = 1; | |
604 | else if (!inargv && dt == 1) | |
605 | /* device wasn't explicitly listed, so need | |
606 | * explicit domain match - which we have */ | |
cbeeb0e5 AC |
607 | tmpdev->used = 1; |
608 | else | |
609 | /* if domains don't match mark as unused */ | |
610 | tmpdev->used = 0; | |
611 | dev_policy_free(pol); | |
612 | } | |
613 | } | |
614 | domain_free(domains); | |
615 | ||
98dbd966 | 616 | if (!st || !st->sb || !content) |
c30e5369 N |
617 | return 2; |
618 | ||
05833051 | 619 | /* Now need to open the array device. Use create_mddev */ |
98dbd966 | 620 | if (content == &info) |
a5d85af7 | 621 | st->ss->getinfo_super(st, content, NULL); |
3d2c4fc7 | 622 | |
69207ff6 | 623 | trustworthy = FOREIGN; |
05833051 | 624 | name = content->name; |
745f72f6 N |
625 | switch (st->ss->match_home(st, homehost) |
626 | ?: st->ss->match_home(st, "any")) { | |
69207ff6 N |
627 | case 1: |
628 | trustworthy = LOCAL; | |
98dbd966 | 629 | name = strchr(content->name, ':'); |
69207ff6 N |
630 | if (name) |
631 | name++; | |
3d2c4fc7 | 632 | else |
98dbd966 | 633 | name = content->name; |
69207ff6 | 634 | break; |
c30e5369 | 635 | } |
05833051 | 636 | if (!auto_assem) |
aa7c284c | 637 | /* If the array is listed in mdadm.conf or on |
ac2ecf55 N |
638 | * command line, then we trust the name |
639 | * even if the array doesn't look local | |
640 | */ | |
641 | trustworthy = LOCAL; | |
642 | ||
05833051 | 643 | if (name[0] == 0 && |
98dbd966 DW |
644 | content->array.level == LEVEL_CONTAINER) { |
645 | name = content->text_version; | |
a4bc1720 N |
646 | trustworthy = METADATA; |
647 | } | |
0ac91628 N |
648 | |
649 | if (name[0] && trustworthy != LOCAL && | |
650 | ! require_homehost && | |
651 | conf_name_is_free(name)) | |
652 | trustworthy = LOCAL; | |
653 | ||
7cdc0872 N |
654 | if (trustworthy == LOCAL && |
655 | strchr(name, ':')) | |
656 | /* Ignore 'host:' prefix of name */ | |
657 | name = strchr(name, ':')+1; | |
658 | ||
a04d5763 N |
659 | mdfd = create_mddev(mddev, name, ident->autof, trustworthy, |
660 | chosen_name); | |
c30e5369 N |
661 | if (mdfd < 0) { |
662 | st->ss->free_super(st); | |
c30e5369 | 663 | if (auto_assem) |
60e1bc1a | 664 | goto try_again; |
c30e5369 N |
665 | return 1; |
666 | } | |
a04d5763 | 667 | mddev = chosen_name; |
c30e5369 N |
668 | vers = md_get_version(mdfd); |
669 | if (vers < 9000) { | |
670 | fprintf(stderr, Name ": Assemble requires driver version 0.90.0 or later.\n" | |
671 | " Upgrade your kernel or try --build\n"); | |
672 | close(mdfd); | |
673 | return 1; | |
674 | } | |
66afdfa9 | 675 | if (mddev_busy(fd2devnum(mdfd))) { |
c30e5369 N |
676 | fprintf(stderr, Name ": %s already active, cannot restart it!\n", |
677 | mddev); | |
678 | for (tmpdev = devlist ; | |
679 | tmpdev && tmpdev->used != 1; | |
680 | tmpdev = tmpdev->next) | |
681 | ; | |
682 | if (tmpdev && auto_assem) | |
683 | fprintf(stderr, Name ": %s needed for %s...\n", | |
684 | mddev, tmpdev->devname); | |
685 | close(mdfd); | |
686 | mdfd = -3; | |
687 | st->ss->free_super(st); | |
c30e5369 N |
688 | if (auto_assem) |
689 | goto try_again; | |
690 | return 1; | |
8a46fe84 | 691 | } |
c30e5369 | 692 | ioctl(mdfd, STOP_ARRAY, NULL); /* just incase it was started but has no content */ |
8a46fe84 | 693 | |
9008ed1c N |
694 | #ifndef MDASSEMBLE |
695 | if (content != &info) { | |
696 | /* This is a member of a container. Try starting the array. */ | |
588bebfc AK |
697 | int err; |
698 | err = assemble_container_content(st, mdfd, content, runstop, | |
49680258 | 699 | chosen_name, verbose, |
b76b30e0 | 700 | backup_file, freeze_reshape); |
588bebfc | 701 | close(mdfd); |
588bebfc | 702 | return err; |
9008ed1c N |
703 | } |
704 | #endif | |
811e6cbe | 705 | /* Ok, no bad inconsistancy, we can try updating etc */ |
bf4fb153 | 706 | bitmap_done = 0; |
6e46bf34 | 707 | content->update_private = NULL; |
d7f7ebb7 | 708 | devices = malloc(num_devs * sizeof(*devices)); |
02e7c5b7 | 709 | devmap = calloc(num_devs * content->array.raid_disks, 1); |
da6b5ca9 | 710 | for (tmpdev = devlist; tmpdev; tmpdev=tmpdev->next) if (tmpdev->used == 1) { |
811e6cbe NB |
711 | char *devname = tmpdev->devname; |
712 | struct stat stb; | |
5787fa49 | 713 | /* looks like a good enough match to update the super block if needed */ |
d1f1011b | 714 | #ifndef MDASSEMBLE |
5787fa49 | 715 | if (update) { |
811e6cbe | 716 | int dfd; |
4b1ac34b NB |
717 | /* prepare useful information in info structures */ |
718 | struct stat stb2; | |
3da92f27 | 719 | struct supertype *tst; |
1e2b2765 | 720 | int err; |
4b1ac34b | 721 | fstat(mdfd, &stb2); |
7d99579f NB |
722 | |
723 | if (strcmp(update, "uuid")==0 && | |
724 | !ident->uuid_set) { | |
725 | int rfd; | |
726 | if ((rfd = open("/dev/urandom", O_RDONLY)) < 0 || | |
727 | read(rfd, ident->uuid, 16) != 16) { | |
728 | *(__u32*)(ident->uuid) = random(); | |
729 | *(__u32*)(ident->uuid+1) = random(); | |
730 | *(__u32*)(ident->uuid+2) = random(); | |
731 | *(__u32*)(ident->uuid+3) = random(); | |
732 | } | |
733 | if (rfd >= 0) close(rfd); | |
7d99579f | 734 | } |
811e6cbe NB |
735 | dfd = dev_open(devname, O_RDWR|O_EXCL); |
736 | ||
3da92f27 | 737 | tst = dup_super(st); |
9f22b13f N |
738 | if (dfd < 0 || tst->ss->load_super(tst, dfd, NULL) != 0) { |
739 | fprintf(stderr, Name ": cannot re-read metadata from %s - aborting\n", | |
740 | devname); | |
741 | if (dfd >= 0) | |
742 | close(dfd); | |
743 | close(mdfd); | |
d7f7ebb7 | 744 | free(devices); |
02e7c5b7 | 745 | free(devmap); |
9f22b13f N |
746 | return 1; |
747 | } | |
02e7c5b7 | 748 | tst->ss->getinfo_super(tst, content, devmap + devcnt * content->array.raid_disks); |
811e6cbe | 749 | |
98dbd966 DW |
750 | memcpy(content->uuid, ident->uuid, 16); |
751 | strcpy(content->name, ident->name); | |
752 | content->array.md_minor = minor(stb2.st_rdev); | |
811e6cbe | 753 | |
1e2b2765 N |
754 | if (strcmp(update, "byteorder") == 0) |
755 | err = 0; | |
756 | else | |
757 | err = tst->ss->update_super(tst, content, update, | |
758 | devname, verbose, | |
759 | ident->uuid_set, | |
760 | homehost); | |
761 | if (err < 0) { | |
762 | fprintf(stderr, | |
763 | Name ": --update=%s not understood" | |
764 | " for %s metadata\n", | |
765 | update, tst->ss->name); | |
766 | tst->ss->free_super(tst); | |
767 | free(tst); | |
768 | close(mdfd); | |
769 | close(dfd); | |
d7f7ebb7 | 770 | free(devices); |
02e7c5b7 | 771 | free(devmap); |
1e2b2765 N |
772 | return 1; |
773 | } | |
e5eac01f NB |
774 | if (strcmp(update, "uuid")==0 && |
775 | !ident->uuid_set) { | |
776 | ident->uuid_set = 1; | |
98dbd966 | 777 | memcpy(ident->uuid, content->uuid, 16); |
e5eac01f | 778 | } |
1e2b2765 | 779 | if (tst->ss->store_super(tst, dfd)) |
5787fa49 NB |
780 | fprintf(stderr, Name ": Could not re-write superblock on %s.\n", |
781 | devname); | |
1e2b2765 | 782 | close(dfd); |
8131b493 NB |
783 | |
784 | if (strcmp(update, "uuid")==0 && | |
bf4fb153 | 785 | ident->bitmap_fd >= 0 && !bitmap_done) { |
3da92f27 | 786 | if (bitmap_update_uuid(ident->bitmap_fd, |
98dbd966 | 787 | content->uuid, |
3da92f27 | 788 | tst->ss->swapuuid) != 0) |
bf4fb153 NB |
789 | fprintf(stderr, Name ": Could not update uuid on external bitmap.\n"); |
790 | else | |
791 | bitmap_done = 1; | |
792 | } | |
3da92f27 | 793 | tst->ss->free_super(tst); |
d1f1011b NB |
794 | } else |
795 | #endif | |
796 | { | |
30e1b9a5 | 797 | struct supertype *tst = dup_super(st); |
da6b5ca9 NB |
798 | int dfd; |
799 | dfd = dev_open(devname, O_RDWR|O_EXCL); | |
800 | ||
9f22b13f N |
801 | if (dfd < 0 || tst->ss->load_super(tst, dfd, NULL) != 0) { |
802 | fprintf(stderr, Name ": cannot re-read metadata from %s - aborting\n", | |
803 | devname); | |
804 | if (dfd >= 0) | |
805 | close(dfd); | |
806 | close(mdfd); | |
d7f7ebb7 | 807 | free(devices); |
02e7c5b7 | 808 | free(devmap); |
9f22b13f N |
809 | return 1; |
810 | } | |
02e7c5b7 | 811 | tst->ss->getinfo_super(tst, content, devmap + devcnt * content->array.raid_disks); |
3da92f27 | 812 | tst->ss->free_super(tst); |
da6b5ca9 | 813 | close(dfd); |
5787fa49 NB |
814 | } |
815 | ||
811e6cbe NB |
816 | stat(devname, &stb); |
817 | ||
dab6685f | 818 | if (verbose > 0) |
cd29a5c8 | 819 | fprintf(stderr, Name ": %s is identified as a member of %s, slot %d.\n", |
98dbd966 | 820 | devname, mddev, content->disk.raid_disk); |
64c4757e | 821 | devices[devcnt].devname = devname; |
64c4757e | 822 | devices[devcnt].uptodate = 0; |
98dbd966 | 823 | devices[devcnt].i = *content; |
213ee40b NB |
824 | devices[devcnt].i.disk.major = major(stb.st_rdev); |
825 | devices[devcnt].i.disk.minor = minor(stb.st_rdev); | |
64c4757e | 826 | if (most_recent < devcnt) { |
213ee40b NB |
827 | if (devices[devcnt].i.events |
828 | > devices[most_recent].i.events) | |
64c4757e NB |
829 | most_recent = devcnt; |
830 | } | |
df0d4ea0 | 831 | if (content->array.level == LEVEL_MULTIPATH) |
5787fa49 NB |
832 | /* with multipath, the raid_disk from the superblock is meaningless */ |
833 | i = devcnt; | |
834 | else | |
213ee40b | 835 | i = devices[devcnt].i.disk.raid_disk; |
308e1801 | 836 | if (i+1 == 0) { |
98dbd966 DW |
837 | if (nextspare < content->array.raid_disks) |
838 | nextspare = content->array.raid_disks; | |
308e1801 | 839 | i = nextspare++; |
08110d41 | 840 | } else { |
98dbd966 | 841 | if (i >= content->array.raid_disks && |
08110d41 NB |
842 | i >= nextspare) |
843 | nextspare = i+1; | |
308e1801 | 844 | } |
98c6faba | 845 | if (i < 10000) { |
56eedc1a | 846 | if (i >= bestcnt) { |
f21e18ca | 847 | int newbestcnt = i+10; |
56eedc1a | 848 | int *newbest = malloc(sizeof(int)*newbestcnt); |
f21e18ca | 849 | int c; |
56eedc1a NB |
850 | for (c=0; c < newbestcnt; c++) |
851 | if (c < bestcnt) | |
852 | newbest[c] = best[c]; | |
853 | else | |
854 | newbest[c] = -1; | |
855 | if (best)free(best); | |
856 | best = newbest; | |
857 | bestcnt = newbestcnt; | |
858 | } | |
6a255b69 | 859 | if (best[i] >=0 && |
213ee40b NB |
860 | devices[best[i]].i.events |
861 | == devices[devcnt].i.events | |
862 | && (devices[best[i]].i.disk.minor | |
863 | != devices[devcnt].i.disk.minor) | |
b8ac1967 | 864 | && st->ss == &super0 |
98dbd966 | 865 | && content->array.level != LEVEL_MULTIPATH) { |
6a255b69 NB |
866 | /* two different devices with identical superblock. |
867 | * Could be a mis-detection caused by overlapping | |
868 | * partitions. fail-safe. | |
869 | */ | |
870 | fprintf(stderr, Name ": WARNING %s and %s appear" | |
871 | " to have very similar superblocks.\n" | |
872 | " If they are really different, " | |
873 | "please --zero the superblock on one\n" | |
d2df86e0 NB |
874 | " If they are the same or overlap," |
875 | " please remove one from %s.\n", | |
876 | devices[best[i]].devname, devname, | |
877 | inargv ? "the list" : | |
878 | "the\n DEVICE list in mdadm.conf" | |
879 | ); | |
7f91af49 | 880 | close(mdfd); |
d7f7ebb7 | 881 | free(devices); |
02e7c5b7 | 882 | free(devmap); |
6a255b69 NB |
883 | return 1; |
884 | } | |
52826846 | 885 | if (best[i] == -1 |
213ee40b NB |
886 | || (devices[best[i]].i.events |
887 | < devices[devcnt].i.events)) | |
52826846 | 888 | best[i] = devcnt; |
56eedc1a | 889 | } |
64c4757e | 890 | devcnt++; |
df37ffc0 | 891 | } |
6e46bf34 DW |
892 | free(content->update_private); |
893 | content->update_private = NULL; | |
4b1ac34b | 894 | |
64c4757e | 895 | if (devcnt == 0) { |
682c7051 | 896 | fprintf(stderr, Name ": no devices found for %s\n", |
64c4757e | 897 | mddev); |
3d2b16e7 NB |
898 | if (st) |
899 | st->ss->free_super(st); | |
7f91af49 | 900 | close(mdfd); |
d7f7ebb7 | 901 | free(devices); |
02e7c5b7 | 902 | free(devmap); |
64c4757e NB |
903 | return 1; |
904 | } | |
4b1ac34b | 905 | |
3d2b16e7 NB |
906 | if (update && strcmp(update, "byteorder")==0) |
907 | st->minor_version = 90; | |
908 | ||
a5d85af7 | 909 | st->ss->getinfo_super(st, content, NULL); |
98dbd966 | 910 | clean = content->array.state & 1; |
4b1ac34b | 911 | |
64c4757e NB |
912 | /* now we have some devices that might be suitable. |
913 | * I wonder how many | |
914 | */ | |
98dbd966 DW |
915 | avail = malloc(content->array.raid_disks); |
916 | memset(avail, 0, content->array.raid_disks); | |
64c4757e | 917 | okcnt = 0; |
52826846 | 918 | sparecnt=0; |
1ff98339 | 919 | rebuilding_cnt=0; |
f21e18ca | 920 | for (i=0; i< bestcnt; i++) { |
64c4757e | 921 | int j = best[i]; |
ee04451c NB |
922 | int event_margin = 1; /* always allow a difference of '1' |
923 | * like the kernel does | |
924 | */ | |
64c4757e | 925 | if (j < 0) continue; |
d013a55e NB |
926 | /* note: we ignore error flags in multipath arrays |
927 | * as they don't make sense | |
928 | */ | |
df0d4ea0 | 929 | if (content->array.level != LEVEL_MULTIPATH) |
f22385f9 | 930 | if (!(devices[j].i.disk.state & (1<<MD_DISK_ACTIVE))) { |
213ee40b | 931 | if (!(devices[j].i.disk.state |
ed7fc6b4 AC |
932 | & (1<<MD_DISK_FAULTY))) { |
933 | devices[j].uptodate = 1; | |
aa88f531 | 934 | sparecnt++; |
ed7fc6b4 | 935 | } |
d013a55e | 936 | continue; |
aa88f531 | 937 | } |
02e7c5b7 N |
938 | /* If this devices thinks that 'most_recent' has failed, then |
939 | * we must reject this device. | |
940 | */ | |
941 | if (j != most_recent && | |
942 | content->array.raid_disks > 0 && | |
943 | devices[most_recent].i.disk.raid_disk >= 0 && | |
944 | devmap[j * content->array.raid_disks + devices[most_recent].i.disk.raid_disk] == 0) { | |
945 | if (verbose > -1) | |
946 | fprintf(stderr, Name ": ignoring %s as it reports %s as failed\n", | |
947 | devices[j].devname, devices[most_recent].devname); | |
948 | best[i] = -1; | |
949 | continue; | |
950 | } | |
213ee40b NB |
951 | if (devices[j].i.events+event_margin >= |
952 | devices[most_recent].i.events) { | |
64c4757e | 953 | devices[j].uptodate = 1; |
1ff98339 | 954 | if (i < content->array.raid_disks) { |
dcc4210f DW |
955 | if (devices[j].i.recovery_start == MaxSector || |
956 | (content->reshape_active && | |
957 | j >= content->array.raid_disks - content->delta_disks)) { | |
1ff98339 N |
958 | okcnt++; |
959 | avail[i]=1; | |
960 | } else | |
961 | rebuilding_cnt++; | |
265e0f17 | 962 | } else |
52826846 | 963 | sparecnt++; |
64c4757e NB |
964 | } |
965 | } | |
02e7c5b7 | 966 | free(devmap); |
98dbd966 DW |
967 | while (force && !enough(content->array.level, content->array.raid_disks, |
968 | content->array.layout, 1, | |
265e0f17 | 969 | avail, okcnt)) { |
64c4757e NB |
970 | /* Choose the newest best drive which is |
971 | * not up-to-date, update the superblock | |
972 | * and add it. | |
973 | */ | |
52826846 | 974 | int fd; |
3da92f27 | 975 | struct supertype *tst; |
f21e18ca | 976 | unsigned long long current_events; |
cd29a5c8 | 977 | chosen_drive = -1; |
f21e18ca | 978 | for (i = 0; i < content->array.raid_disks && i < bestcnt; i++) { |
52826846 NB |
979 | int j = best[i]; |
980 | if (j>=0 && | |
981 | !devices[j].uptodate && | |
921d9e16 | 982 | devices[j].i.recovery_start == MaxSector && |
52826846 | 983 | (chosen_drive < 0 || |
213ee40b NB |
984 | devices[j].i.events |
985 | > devices[chosen_drive].i.events)) | |
52826846 NB |
986 | chosen_drive = j; |
987 | } | |
988 | if (chosen_drive < 0) | |
989 | break; | |
213ee40b | 990 | current_events = devices[chosen_drive].i.events; |
c5a6f9a6 | 991 | add_another: |
dab6685f NB |
992 | if (verbose >= 0) |
993 | fprintf(stderr, Name ": forcing event count in %s(%d) from %d upto %d\n", | |
213ee40b NB |
994 | devices[chosen_drive].devname, |
995 | devices[chosen_drive].i.disk.raid_disk, | |
996 | (int)(devices[chosen_drive].i.events), | |
997 | (int)(devices[most_recent].i.events)); | |
8b0dabea | 998 | fd = dev_open(devices[chosen_drive].devname, O_RDWR|O_EXCL); |
52826846 NB |
999 | if (fd < 0) { |
1000 | fprintf(stderr, Name ": Couldn't open %s for write - not updating\n", | |
1001 | devices[chosen_drive].devname); | |
213ee40b | 1002 | devices[chosen_drive].i.events = 0; |
52826846 NB |
1003 | continue; |
1004 | } | |
3da92f27 | 1005 | tst = dup_super(st); |
60b435db | 1006 | if (tst->ss->load_super(tst,fd, NULL)) { |
52826846 NB |
1007 | close(fd); |
1008 | fprintf(stderr, Name ": RAID superblock disappeared from %s - not updating.\n", | |
1009 | devices[chosen_drive].devname); | |
213ee40b | 1010 | devices[chosen_drive].i.events = 0; |
52826846 NB |
1011 | continue; |
1012 | } | |
98dbd966 DW |
1013 | content->events = devices[most_recent].i.events; |
1014 | tst->ss->update_super(tst, content, "force-one", | |
67a8c82d NB |
1015 | devices[chosen_drive].devname, verbose, |
1016 | 0, NULL); | |
4b1ac34b | 1017 | |
3da92f27 | 1018 | if (tst->ss->store_super(tst, fd)) { |
52826846 NB |
1019 | close(fd); |
1020 | fprintf(stderr, Name ": Could not re-write superblock on %s\n", | |
1021 | devices[chosen_drive].devname); | |
213ee40b | 1022 | devices[chosen_drive].i.events = 0; |
3da92f27 | 1023 | tst->ss->free_super(tst); |
52826846 NB |
1024 | continue; |
1025 | } | |
1026 | close(fd); | |
213ee40b | 1027 | devices[chosen_drive].i.events = devices[most_recent].i.events; |
52826846 | 1028 | devices[chosen_drive].uptodate = 1; |
265e0f17 | 1029 | avail[chosen_drive] = 1; |
52826846 | 1030 | okcnt++; |
3da92f27 | 1031 | tst->ss->free_super(tst); |
c5a6f9a6 NB |
1032 | |
1033 | /* If there are any other drives of the same vintage, | |
1034 | * add them in as well. We can't lose and we might gain | |
1035 | */ | |
f21e18ca | 1036 | for (i = 0; i < content->array.raid_disks && i < bestcnt ; i++) { |
c5a6f9a6 NB |
1037 | int j = best[i]; |
1038 | if (j >= 0 && | |
1039 | !devices[j].uptodate && | |
213ee40b | 1040 | devices[j].i.events == current_events) { |
c5a6f9a6 NB |
1041 | chosen_drive = j; |
1042 | goto add_another; | |
1043 | } | |
1044 | } | |
64c4757e | 1045 | } |
52826846 NB |
1046 | |
1047 | /* Now we want to look at the superblock which the kernel will base things on | |
1048 | * and compare the devices that we think are working with the devices that the | |
1049 | * superblock thinks are working. | |
1050 | * If there are differences and --force is given, then update this chosen | |
1051 | * superblock. | |
1052 | */ | |
cd29a5c8 | 1053 | chosen_drive = -1; |
3da92f27 | 1054 | st->ss->free_super(st); |
56eedc1a | 1055 | for (i=0; chosen_drive < 0 && i<bestcnt; i++) { |
52826846 NB |
1056 | int j = best[i]; |
1057 | int fd; | |
4b1ac34b | 1058 | |
52826846 NB |
1059 | if (j<0) |
1060 | continue; | |
1061 | if (!devices[j].uptodate) | |
1062 | continue; | |
a28232b8 N |
1063 | if (devices[j].i.events < devices[most_recent].i.events) |
1064 | continue; | |
52826846 | 1065 | chosen_drive = j; |
8b0dabea | 1066 | if ((fd=dev_open(devices[j].devname, O_RDONLY|O_EXCL))< 0) { |
52826846 NB |
1067 | fprintf(stderr, Name ": Cannot open %s: %s\n", |
1068 | devices[j].devname, strerror(errno)); | |
7f91af49 | 1069 | close(mdfd); |
d7f7ebb7 | 1070 | free(devices); |
52826846 NB |
1071 | return 1; |
1072 | } | |
3da92f27 | 1073 | if (st->ss->load_super(st,fd, NULL)) { |
52826846 NB |
1074 | close(fd); |
1075 | fprintf(stderr, Name ": RAID superblock has disappeared from %s\n", | |
1076 | devices[j].devname); | |
7f91af49 | 1077 | close(mdfd); |
d7f7ebb7 | 1078 | free(devices); |
52826846 NB |
1079 | return 1; |
1080 | } | |
1081 | close(fd); | |
1082 | } | |
3da92f27 | 1083 | if (st->sb == NULL) { |
4b1ac34b | 1084 | fprintf(stderr, Name ": No suitable drives found for %s\n", mddev); |
7f91af49 | 1085 | close(mdfd); |
d7f7ebb7 | 1086 | free(devices); |
4b1ac34b NB |
1087 | return 1; |
1088 | } | |
a5d85af7 | 1089 | st->ss->getinfo_super(st, content, NULL); |
f35f2525 | 1090 | #ifndef MDASSEMBLE |
98dbd966 | 1091 | sysfs_init(content, mdfd, 0); |
f35f2525 | 1092 | #endif |
56eedc1a | 1093 | for (i=0; i<bestcnt; i++) { |
52826846 | 1094 | int j = best[i]; |
98c6faba | 1095 | unsigned int desired_state; |
11a3e71d | 1096 | |
98dbd966 | 1097 | if (i < content->array.raid_disks) |
11a3e71d NB |
1098 | desired_state = (1<<MD_DISK_ACTIVE) | (1<<MD_DISK_SYNC); |
1099 | else | |
1100 | desired_state = 0; | |
1101 | ||
52826846 NB |
1102 | if (j<0) |
1103 | continue; | |
1104 | if (!devices[j].uptodate) | |
1105 | continue; | |
4b1ac34b | 1106 | |
213ee40b | 1107 | devices[j].i.disk.state = desired_state; |
4e9a6ff7 N |
1108 | if (!(devices[j].i.array.state & 1)) |
1109 | clean = 0; | |
213ee40b NB |
1110 | |
1111 | if (st->ss->update_super(st, &devices[j].i, "assemble", NULL, | |
68c7d6d7 | 1112 | verbose, 0, NULL)) { |
52826846 | 1113 | if (force) { |
dab6685f NB |
1114 | if (verbose >= 0) |
1115 | fprintf(stderr, Name ": " | |
1116 | "clearing FAULTY flag for device %d in %s for %s\n", | |
1117 | j, mddev, devices[j].devname); | |
4b1ac34b | 1118 | change = 1; |
52826846 | 1119 | } else { |
dab6685f NB |
1120 | if (verbose >= -1) |
1121 | fprintf(stderr, Name ": " | |
1122 | "device %d in %s has wrong state in superblock, but %s seems ok\n", | |
1123 | i, mddev, devices[j].devname); | |
52826846 NB |
1124 | } |
1125 | } | |
4b1ac34b | 1126 | #if 0 |
213ee40b | 1127 | if (!(super.disks[i].i.disk.state & (1 << MD_DISK_FAULTY))) { |
52826846 NB |
1128 | fprintf(stderr, Name ": devices %d of %s is not marked FAULTY in superblock, but cannot be found\n", |
1129 | i, mddev); | |
1130 | } | |
4b1ac34b | 1131 | #endif |
52826846 | 1132 | } |
c5a6f9a6 | 1133 | if (force && !clean && |
98dbd966 DW |
1134 | !enough(content->array.level, content->array.raid_disks, |
1135 | content->array.layout, clean, | |
c5a6f9a6 | 1136 | avail, okcnt)) { |
98dbd966 | 1137 | change += st->ss->update_super(st, content, "force-array", |
67a8c82d NB |
1138 | devices[chosen_drive].devname, verbose, |
1139 | 0, NULL); | |
583315d9 | 1140 | clean = 1; |
d013a55e | 1141 | } |
52826846 | 1142 | |
4b1ac34b | 1143 | if (change) { |
52826846 | 1144 | int fd; |
8b0dabea | 1145 | fd = dev_open(devices[chosen_drive].devname, O_RDWR|O_EXCL); |
52826846 | 1146 | if (fd < 0) { |
353632d9 | 1147 | fprintf(stderr, Name ": Could not open %s for write - cannot Assemble array.\n", |
52826846 | 1148 | devices[chosen_drive].devname); |
7f91af49 | 1149 | close(mdfd); |
d7f7ebb7 | 1150 | free(devices); |
52826846 NB |
1151 | return 1; |
1152 | } | |
3da92f27 | 1153 | if (st->ss->store_super(st, fd)) { |
52826846 NB |
1154 | close(fd); |
1155 | fprintf(stderr, Name ": Could not re-write superblock on %s\n", | |
1156 | devices[chosen_drive].devname); | |
7f91af49 | 1157 | close(mdfd); |
d7f7ebb7 | 1158 | free(devices); |
52826846 NB |
1159 | return 1; |
1160 | } | |
a28232b8 N |
1161 | if (verbose >= 0) |
1162 | fprintf(stderr, Name ": Marking array %s as 'clean'\n", | |
1163 | mddev); | |
52826846 | 1164 | close(fd); |
52826846 NB |
1165 | } |
1166 | ||
353632d9 NB |
1167 | /* If we are in the middle of a reshape we may need to restore saved data |
1168 | * that was moved aside due to the reshape overwriting live data | |
1169 | * The code of doing this lives in Grow.c | |
1170 | */ | |
39c5a909 | 1171 | #ifndef MDASSEMBLE |
98dbd966 | 1172 | if (content->reshape_active) { |
353632d9 NB |
1173 | int err = 0; |
1174 | int *fdlist = malloc(sizeof(int)* bestcnt); | |
cd77ac4e | 1175 | if (verbose > 0) |
ea0ebe96 N |
1176 | fprintf(stderr, Name ":%s has an active reshape - checking " |
1177 | "if critical section needs to be restored\n", | |
1178 | chosen_name); | |
353632d9 NB |
1179 | for (i=0; i<bestcnt; i++) { |
1180 | int j = best[i]; | |
1181 | if (j >= 0) { | |
1182 | fdlist[i] = dev_open(devices[j].devname, O_RDWR|O_EXCL); | |
1183 | if (fdlist[i] < 0) { | |
1184 | fprintf(stderr, Name ": Could not open %s for write - cannot Assemble array.\n", | |
1185 | devices[j].devname); | |
1186 | err = 1; | |
1187 | break; | |
1188 | } | |
1189 | } else | |
1190 | fdlist[i] = -1; | |
1191 | } | |
87f26d14 | 1192 | if (!err) { |
ba53ea59 AK |
1193 | if (st->ss->external && st->ss->recover_backup) |
1194 | err = st->ss->recover_backup(st, content); | |
1195 | else | |
1196 | err = Grow_restart(st, content, fdlist, bestcnt, | |
1197 | backup_file, verbose > 0); | |
87f26d14 N |
1198 | if (err && invalid_backup) { |
1199 | if (verbose > 0) | |
1200 | fprintf(stderr, Name ": continuing" | |
1201 | " without restoring backup\n"); | |
1202 | err = 0; | |
1203 | } | |
1204 | } | |
353632d9 NB |
1205 | while (i>0) { |
1206 | i--; | |
1207 | if (fdlist[i]>=0) close(fdlist[i]); | |
1208 | } | |
1209 | if (err) { | |
1210 | fprintf(stderr, Name ": Failed to restore critical section for reshape, sorry.\n"); | |
e9e43ec3 N |
1211 | if (backup_file == NULL) |
1212 | fprintf(stderr," Possibly you needed to specify the --backup-file\n"); | |
7f91af49 | 1213 | close(mdfd); |
d7f7ebb7 | 1214 | free(devices); |
353632d9 NB |
1215 | return err; |
1216 | } | |
1217 | } | |
39c5a909 | 1218 | #endif |
aa88f531 NB |
1219 | /* count number of in-sync devices according to the superblock. |
1220 | * We must have this number to start the array without -s or -R | |
1221 | */ | |
98dbd966 | 1222 | req_cnt = content->array.working_disks; |
aa88f531 | 1223 | |
64c4757e NB |
1224 | /* Almost ready to actually *do* something */ |
1225 | if (!old_linux) { | |
fbf8a0b7 | 1226 | int rv; |
a19c88b8 | 1227 | |
a04d5763 N |
1228 | /* First, fill in the map, so that udev can find our name |
1229 | * as soon as we become active. | |
1230 | */ | |
98dbd966 DW |
1231 | map_update(NULL, fd2devnum(mdfd), content->text_version, |
1232 | content->uuid, chosen_name); | |
a04d5763 | 1233 | |
98dbd966 | 1234 | rv = set_array_info(mdfd, st, content); |
fbf8a0b7 | 1235 | if (rv) { |
f35f2525 | 1236 | fprintf(stderr, Name ": failed to set array info for %s: %s\n", |
64c4757e | 1237 | mddev, strerror(errno)); |
24af7a87 | 1238 | ioctl(mdfd, STOP_ARRAY, NULL); |
7f91af49 | 1239 | close(mdfd); |
d7f7ebb7 | 1240 | free(devices); |
64c4757e NB |
1241 | return 1; |
1242 | } | |
11484a63 | 1243 | if (ident->bitmap_fd >= 0) { |
c82f047c NB |
1244 | if (ioctl(mdfd, SET_BITMAP_FILE, ident->bitmap_fd) != 0) { |
1245 | fprintf(stderr, Name ": SET_BITMAP_FILE failed.\n"); | |
24af7a87 | 1246 | ioctl(mdfd, STOP_ARRAY, NULL); |
7f91af49 | 1247 | close(mdfd); |
d7f7ebb7 | 1248 | free(devices); |
c82f047c NB |
1249 | return 1; |
1250 | } | |
7ef02d01 NB |
1251 | } else if (ident->bitmap_file) { |
1252 | /* From config file */ | |
1253 | int bmfd = open(ident->bitmap_file, O_RDWR); | |
1254 | if (bmfd < 0) { | |
1255 | fprintf(stderr, Name ": Could not open bitmap file %s\n", | |
1256 | ident->bitmap_file); | |
24af7a87 | 1257 | ioctl(mdfd, STOP_ARRAY, NULL); |
7f91af49 | 1258 | close(mdfd); |
d7f7ebb7 | 1259 | free(devices); |
7ef02d01 NB |
1260 | return 1; |
1261 | } | |
1262 | if (ioctl(mdfd, SET_BITMAP_FILE, bmfd) != 0) { | |
1263 | fprintf(stderr, Name ": Failed to set bitmapfile for %s\n", mddev); | |
1264 | close(bmfd); | |
24af7a87 | 1265 | ioctl(mdfd, STOP_ARRAY, NULL); |
7f91af49 | 1266 | close(mdfd); |
d7f7ebb7 | 1267 | free(devices); |
7ef02d01 NB |
1268 | return 1; |
1269 | } | |
1270 | close(bmfd); | |
c82f047c | 1271 | } |
7ef02d01 | 1272 | |
52826846 | 1273 | /* First, add the raid disks, but add the chosen one last */ |
56eedc1a | 1274 | for (i=0; i<= bestcnt; i++) { |
52826846 | 1275 | int j; |
56eedc1a | 1276 | if (i < bestcnt) { |
52826846 NB |
1277 | j = best[i]; |
1278 | if (j == chosen_drive) | |
1279 | continue; | |
1280 | } else | |
1281 | j = chosen_drive; | |
1282 | ||
56eedc1a | 1283 | if (j >= 0 /* && devices[j].uptodate */) { |
484ae54d N |
1284 | int dfd = dev_open(devices[j].devname, |
1285 | O_RDWR|O_EXCL); | |
1286 | if (dfd >= 0) { | |
1287 | remove_partitions(dfd); | |
1288 | close(dfd); | |
1289 | } | |
98dbd966 | 1290 | rv = add_disk(mdfd, st, content, &devices[j].i); |
7801ac20 | 1291 | |
a19c88b8 | 1292 | if (rv) { |
213ee40b NB |
1293 | fprintf(stderr, Name ": failed to add " |
1294 | "%s to %s: %s\n", | |
64c4757e NB |
1295 | devices[j].devname, |
1296 | mddev, | |
1297 | strerror(errno)); | |
98dbd966 | 1298 | if (i < content->array.raid_disks |
213ee40b | 1299 | || i == bestcnt) |
52826846 NB |
1300 | okcnt--; |
1301 | else | |
1302 | sparecnt--; | |
dab6685f | 1303 | } else if (verbose > 0) |
213ee40b NB |
1304 | fprintf(stderr, Name ": added %s " |
1305 | "to %s as %d\n", | |
1306 | devices[j].devname, mddev, | |
1307 | devices[j].i.disk.raid_disk); | |
98dbd966 | 1308 | } else if (verbose > 0 && i < content->array.raid_disks) |
213ee40b NB |
1309 | fprintf(stderr, Name ": no uptodate device for " |
1310 | "slot %d of %s\n", | |
64c4757e NB |
1311 | i, mddev); |
1312 | } | |
aba69144 | 1313 | |
98dbd966 | 1314 | if (content->array.level == LEVEL_CONTAINER) { |
598f0d58 NB |
1315 | if (verbose >= 0) { |
1316 | fprintf(stderr, Name ": Container %s has been " | |
1317 | "assembled with %d drive%s", | |
57ed8c91 | 1318 | mddev, okcnt+sparecnt, okcnt+sparecnt==1?"":"s"); |
f21e18ca | 1319 | if (okcnt < (unsigned)content->array.raid_disks) |
598f0d58 | 1320 | fprintf(stderr, " (out of %d)", |
98dbd966 | 1321 | content->array.raid_disks); |
598f0d58 NB |
1322 | fprintf(stderr, "\n"); |
1323 | } | |
ac597b1c | 1324 | st->ss->free_super(st); |
98dbd966 | 1325 | sysfs_uevent(content, "change"); |
a7c6e3fb | 1326 | wait_for(chosen_name, mdfd); |
7f91af49 | 1327 | close(mdfd); |
d7f7ebb7 | 1328 | free(devices); |
598f0d58 NB |
1329 | return 0; |
1330 | } | |
1331 | ||
64c4757e | 1332 | if (runstop == 1 || |
b8a8ccf9 | 1333 | (runstop <= 0 && |
98dbd966 DW |
1334 | ( enough(content->array.level, content->array.raid_disks, |
1335 | content->array.layout, clean, avail, okcnt) && | |
1ff98339 | 1336 | (okcnt + rebuilding_cnt >= req_cnt || start_partial_ok) |
aa88f531 | 1337 | ))) { |
e9e43ec3 N |
1338 | /* This array is good-to-go. |
1339 | * If a reshape is in progress then we might need to | |
1340 | * continue monitoring it. In that case we start | |
1341 | * it read-only and let the grow code make it writable. | |
1342 | */ | |
1343 | int rv; | |
eb3929a4 | 1344 | #ifndef MDASSEMBLE |
e9e43ec3 N |
1345 | if (content->reshape_active && |
1346 | content->delta_disks <= 0) | |
b76b30e0 AK |
1347 | rv = Grow_continue(mdfd, st, content, |
1348 | backup_file, freeze_reshape); | |
e9e43ec3 | 1349 | else |
eb3929a4 | 1350 | #endif |
e9e43ec3 N |
1351 | rv = ioctl(mdfd, RUN_ARRAY, NULL); |
1352 | if (rv == 0) { | |
dab6685f NB |
1353 | if (verbose >= 0) { |
1354 | fprintf(stderr, Name ": %s has been started with %d drive%s", | |
1355 | mddev, okcnt, okcnt==1?"":"s"); | |
f21e18ca | 1356 | if (okcnt < (unsigned)content->array.raid_disks) |
98dbd966 | 1357 | fprintf(stderr, " (out of %d)", content->array.raid_disks); |
1ff98339 N |
1358 | if (rebuilding_cnt) |
1359 | fprintf(stderr, "%s %d rebuilding", sparecnt?",":" and", rebuilding_cnt); | |
dab6685f NB |
1360 | if (sparecnt) |
1361 | fprintf(stderr, " and %d spare%s", sparecnt, sparecnt==1?"":"s"); | |
1362 | fprintf(stderr, ".\n"); | |
1363 | } | |
8a659c33 N |
1364 | if (content->reshape_active && |
1365 | content->array.level >= 4 && | |
1366 | content->array.level <= 6) { | |
acee8e89 N |
1367 | /* might need to increase the size |
1368 | * of the stripe cache - default is 256 | |
1369 | */ | |
8a659c33 | 1370 | if (256 < 4 * (content->array.chunk_size/4096)) { |
acee8e89 N |
1371 | struct mdinfo *sra = sysfs_read(mdfd, 0, 0); |
1372 | if (sra) | |
1373 | sysfs_set_num(sra, NULL, | |
1374 | "stripe_cache_size", | |
8a659c33 | 1375 | (4 * content->array.chunk_size / 4096) + 1); |
acee8e89 N |
1376 | } |
1377 | } | |
7e83544b N |
1378 | if (okcnt < (unsigned)content->array.raid_disks) { |
1379 | /* If any devices did not get added | |
1380 | * because the kernel rejected them based | |
1381 | * on event count, try adding them | |
1382 | * again providing the action policy is | |
1383 | * 're-add' or greater. The bitmap | |
1384 | * might allow them to be included, or | |
1385 | * they will become spares. | |
1386 | */ | |
b787bec6 | 1387 | for (i = 0; i < bestcnt; i++) { |
7e83544b N |
1388 | int j = best[i]; |
1389 | if (j >= 0 && !devices[j].uptodate) { | |
1390 | if (!disk_action_allows(&devices[j].i, st->ss->name, act_re_add)) | |
1391 | continue; | |
1392 | rv = add_disk(mdfd, st, content, | |
1393 | &devices[j].i); | |
1394 | if (rv == 0 && verbose >= 0) | |
1395 | fprintf(stderr, | |
1396 | Name ": %s has been re-added.\n", | |
1397 | devices[j].devname); | |
1398 | } | |
1399 | } | |
1400 | } | |
a7c6e3fb | 1401 | wait_for(mddev, mdfd); |
7f91af49 N |
1402 | close(mdfd); |
1403 | if (auto_assem) { | |
589395d6 | 1404 | int usecs = 1; |
589395d6 NB |
1405 | /* There is a nasty race with 'mdadm --monitor'. |
1406 | * If it opens this device before we close it, | |
1407 | * it gets an incomplete open on which IO | |
598f0d58 NB |
1408 | * doesn't work and the capacity is |
1409 | * wrong. | |
589395d6 NB |
1410 | * If we reopen (to check for layered devices) |
1411 | * before --monitor closes, we loose. | |
1412 | * | |
1413 | * So: wait upto 1 second for there to be | |
1414 | * a non-zero capacity. | |
1415 | */ | |
1416 | while (usecs < 1000) { | |
1417 | mdfd = open(mddev, O_RDONLY); | |
1418 | if (mdfd >= 0) { | |
beae1dfe NB |
1419 | unsigned long long size; |
1420 | if (get_dev_size(mdfd, NULL, &size) && | |
589395d6 NB |
1421 | size > 0) |
1422 | break; | |
1423 | close(mdfd); | |
1424 | } | |
1425 | usleep(usecs); | |
1426 | usecs <<= 1; | |
1427 | } | |
1428 | } | |
d7f7ebb7 | 1429 | free(devices); |
64c4757e | 1430 | return 0; |
82b27616 | 1431 | } |
682c7051 | 1432 | fprintf(stderr, Name ": failed to RUN_ARRAY %s: %s\n", |
64c4757e | 1433 | mddev, strerror(errno)); |
583315d9 | 1434 | |
98dbd966 DW |
1435 | if (!enough(content->array.level, content->array.raid_disks, |
1436 | content->array.layout, 1, avail, okcnt)) | |
583315d9 NB |
1437 | fprintf(stderr, Name ": Not enough devices to " |
1438 | "start the array.\n"); | |
98dbd966 DW |
1439 | else if (!enough(content->array.level, |
1440 | content->array.raid_disks, | |
1441 | content->array.layout, clean, | |
583315d9 NB |
1442 | avail, okcnt)) |
1443 | fprintf(stderr, Name ": Not enough devices to " | |
1444 | "start the array while not clean " | |
1445 | "- consider --force.\n"); | |
1446 | ||
7f91af49 | 1447 | if (auto_assem) |
1c203a4b | 1448 | ioctl(mdfd, STOP_ARRAY, NULL); |
7f91af49 | 1449 | close(mdfd); |
d7f7ebb7 | 1450 | free(devices); |
64c4757e NB |
1451 | return 1; |
1452 | } | |
82b27616 | 1453 | if (runstop == -1) { |
b8a8ccf9 | 1454 | fprintf(stderr, Name ": %s assembled from %d drive%s", |
52826846 | 1455 | mddev, okcnt, okcnt==1?"":"s"); |
f21e18ca | 1456 | if (okcnt != (unsigned)content->array.raid_disks) |
98dbd966 | 1457 | fprintf(stderr, " (out of %d)", content->array.raid_disks); |
b8a8ccf9 | 1458 | fprintf(stderr, ", but not started.\n"); |
7f91af49 | 1459 | close(mdfd); |
d7f7ebb7 | 1460 | free(devices); |
64c4757e | 1461 | return 0; |
82b27616 | 1462 | } |
4855f95c | 1463 | if (verbose >= -1) { |
dab6685f | 1464 | fprintf(stderr, Name ": %s assembled from %d drive%s", mddev, okcnt, okcnt==1?"":"s"); |
1ff98339 N |
1465 | if (rebuilding_cnt) |
1466 | fprintf(stderr, "%s %d rebuilding", sparecnt?", ":" and ", rebuilding_cnt); | |
dab6685f NB |
1467 | if (sparecnt) |
1468 | fprintf(stderr, " and %d spare%s", sparecnt, sparecnt==1?"":"s"); | |
98dbd966 DW |
1469 | if (!enough(content->array.level, content->array.raid_disks, |
1470 | content->array.layout, 1, avail, okcnt)) | |
dab6685f | 1471 | fprintf(stderr, " - not enough to start the array.\n"); |
98dbd966 DW |
1472 | else if (!enough(content->array.level, |
1473 | content->array.raid_disks, | |
1474 | content->array.layout, clean, | |
583315d9 NB |
1475 | avail, okcnt)) |
1476 | fprintf(stderr, " - not enough to start the " | |
1477 | "array while not clean - consider " | |
1478 | "--force.\n"); | |
dab6685f | 1479 | else { |
f21e18ca | 1480 | if (req_cnt == (unsigned)content->array.raid_disks) |
dab6685f NB |
1481 | fprintf(stderr, " - need all %d to start it", req_cnt); |
1482 | else | |
98dbd966 | 1483 | fprintf(stderr, " - need %d of %d to start", req_cnt, content->array.raid_disks); |
dab6685f NB |
1484 | fprintf(stderr, " (use --run to insist).\n"); |
1485 | } | |
aa88f531 | 1486 | } |
7f91af49 | 1487 | if (auto_assem) |
1c203a4b | 1488 | ioctl(mdfd, STOP_ARRAY, NULL); |
56a8da69 | 1489 | close(mdfd); |
d7f7ebb7 | 1490 | free(devices); |
64c4757e | 1491 | return 1; |
82b27616 | 1492 | } else { |
52826846 NB |
1493 | /* The "chosen_drive" is a good choice, and if necessary, the superblock has |
1494 | * been updated to point to the current locations of devices. | |
1495 | * so we can just start the array | |
82b27616 | 1496 | */ |
cd29a5c8 | 1497 | unsigned long dev; |
213ee40b NB |
1498 | dev = makedev(devices[chosen_drive].i.disk.major, |
1499 | devices[chosen_drive].i.disk.minor); | |
82b27616 NB |
1500 | if (ioctl(mdfd, START_ARRAY, dev)) { |
1501 | fprintf(stderr, Name ": Cannot start array: %s\n", | |
1502 | strerror(errno)); | |
1503 | } | |
aba69144 | 1504 | |
64c4757e | 1505 | } |
7f91af49 | 1506 | close(mdfd); |
d7f7ebb7 | 1507 | free(devices); |
e0d19036 | 1508 | return 0; |
64c4757e | 1509 | } |
6234c63c DW |
1510 | |
1511 | #ifndef MDASSEMBLE | |
1512 | int assemble_container_content(struct supertype *st, int mdfd, | |
1513 | struct mdinfo *content, int runstop, | |
49680258 | 1514 | char *chosen_name, int verbose, |
b76b30e0 | 1515 | char *backup_file, int freeze_reshape) |
6234c63c DW |
1516 | { |
1517 | struct mdinfo *dev, *sra; | |
1518 | int working = 0, preexist = 0; | |
882029c8 | 1519 | int expansion = 0; |
6234c63c | 1520 | struct map_ent *map = NULL; |
7af03341 | 1521 | int old_raid_disks; |
6234c63c DW |
1522 | |
1523 | sysfs_init(content, mdfd, 0); | |
1524 | ||
1525 | sra = sysfs_read(mdfd, 0, GET_VERSION); | |
1526 | if (sra == NULL || strcmp(sra->text_version, content->text_version) != 0) | |
588bebfc | 1527 | if (sysfs_set_array(content, md_get_version(mdfd)) != 0) |
6234c63c | 1528 | return 1; |
588bebfc | 1529 | |
6e75048b | 1530 | if (st->ss->external && content->recovery_blocked) |
b8063f07 AK |
1531 | block_subarray(content); |
1532 | ||
6234c63c DW |
1533 | if (sra) |
1534 | sysfs_free(sra); | |
7af03341 | 1535 | old_raid_disks = content->array.raid_disks - content->delta_disks; |
6234c63c | 1536 | for (dev = content->devs; dev; dev = dev->next) |
14032016 | 1537 | if (sysfs_add_disk(content, dev, 1) == 0) { |
7af03341 | 1538 | if (dev->disk.raid_disk >= old_raid_disks && |
14032016 AK |
1539 | content->reshape_active) |
1540 | expansion++; | |
1541 | else | |
1542 | working++; | |
1543 | } else if (errno == EEXIST) | |
6234c63c | 1544 | preexist++; |
588bebfc | 1545 | if (working == 0) |
7cb2aa33 | 1546 | return 1;/* Nothing new, don't try to start */ |
588bebfc | 1547 | |
8b4e5ea9 N |
1548 | map_update(&map, fd2devnum(mdfd), |
1549 | content->text_version, | |
1550 | content->uuid, chosen_name); | |
1551 | ||
1552 | if (runstop > 0 || | |
882029c8 AK |
1553 | (working + preexist + expansion) >= |
1554 | content->array.working_disks) { | |
bb50e5d3 | 1555 | int err; |
a714580e | 1556 | |
49680258 N |
1557 | if (content->reshape_active) { |
1558 | int spare = content->array.raid_disks + expansion; | |
3f54bd62 AK |
1559 | if (restore_backup(st, content, |
1560 | working, | |
1561 | spare, backup_file, verbose) == 1) | |
49680258 | 1562 | return 1; |
49680258 | 1563 | |
a93ada3b AK |
1564 | if (st->ss->external) { |
1565 | if (!mdmon_running(st->container_dev)) | |
1566 | start_mdmon(st->container_dev); | |
1567 | ping_monitor_by_id(st->container_dev); | |
1568 | } | |
1569 | ||
b76b30e0 AK |
1570 | err = Grow_continue(mdfd, st, content, backup_file, |
1571 | freeze_reshape); | |
49680258 | 1572 | } else switch(content->array.level) { |
6234c63c DW |
1573 | case LEVEL_LINEAR: |
1574 | case LEVEL_MULTIPATH: | |
1575 | case 0: | |
bb50e5d3 N |
1576 | err = sysfs_set_str(content, NULL, "array_state", |
1577 | "active"); | |
6234c63c DW |
1578 | break; |
1579 | default: | |
bb50e5d3 | 1580 | err = sysfs_set_str(content, NULL, "array_state", |
6234c63c DW |
1581 | "readonly"); |
1582 | /* start mdmon if needed. */ | |
bb50e5d3 N |
1583 | if (!err) { |
1584 | if (!mdmon_running(st->container_dev)) | |
1585 | start_mdmon(st->container_dev); | |
983fff45 | 1586 | ping_monitor_by_id(st->container_dev); |
bb50e5d3 | 1587 | } |
6234c63c DW |
1588 | break; |
1589 | } | |
bb50e5d3 N |
1590 | if (!err) |
1591 | sysfs_set_safemode(content, content->safe_mode_delay); | |
6234c63c | 1592 | if (verbose >= 0) { |
bb50e5d3 N |
1593 | if (err) |
1594 | fprintf(stderr, Name | |
1595 | ": array %s now has %d devices", | |
1596 | chosen_name, working + preexist); | |
1597 | else | |
1598 | fprintf(stderr, Name | |
1599 | ": Started %s with %d devices", | |
1600 | chosen_name, working + preexist); | |
6234c63c DW |
1601 | if (preexist) |
1602 | fprintf(stderr, " (%d new)", working); | |
882029c8 AK |
1603 | if (expansion) |
1604 | fprintf(stderr, " ( + %d for expansion)", | |
1605 | expansion); | |
6234c63c DW |
1606 | fprintf(stderr, "\n"); |
1607 | } | |
bb50e5d3 | 1608 | if (!err) |
a7c6e3fb | 1609 | wait_for(chosen_name, mdfd); |
588bebfc | 1610 | return err; |
6234c63c | 1611 | /* FIXME should have an O_EXCL and wait for read-auto */ |
7cb2aa33 | 1612 | } else { |
6234c63c DW |
1613 | if (verbose >= 0) |
1614 | fprintf(stderr, Name | |
1615 | ": %s assembled with %d devices but " | |
1616 | "not started\n", | |
1617 | chosen_name, working); | |
7cb2aa33 N |
1618 | return 1; |
1619 | } | |
6234c63c DW |
1620 | } |
1621 | #endif | |
1622 |