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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 | * |
6f02172d | 4 | * Copyright (C) 2001-2013 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 */ | |
b4924f46 | 51 | struct mdstat_ent *mdstat = mdstat_read(0, 0); |
2de8884f DW |
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 | 83 | if (devname) |
e7b84f9d | 84 | pr_err("%s has wrong uuid.\n", devname); |
08fb91a3 N |
85 | return 0; |
86 | } | |
87 | if (ident->name[0] && (!update || strcmp(update, "name")!= 0) && | |
88 | name_matches(content->name, ident->name, homehost)==0) { | |
89 | if (devname) | |
e7b84f9d | 90 | pr_err("%s has wrong name.\n", devname); |
08fb91a3 N |
91 | return 0; |
92 | } | |
93 | if (ident->super_minor != UnSet && | |
94 | ident->super_minor != content->array.md_minor) { | |
95 | if (devname) | |
e7b84f9d N |
96 | pr_err("%s has wrong super-minor.\n", |
97 | devname); | |
08fb91a3 N |
98 | return 0; |
99 | } | |
100 | if (ident->level != UnSet && | |
101 | ident->level != content->array.level) { | |
102 | if (devname) | |
e7b84f9d N |
103 | pr_err("%s has wrong raid level.\n", |
104 | devname); | |
08fb91a3 N |
105 | return 0; |
106 | } | |
107 | if (ident->raid_disks != UnSet && | |
babb8dd4 | 108 | content->array.raid_disks != 0 && /* metadata doesn't know how many to expect */ |
08fb91a3 N |
109 | ident->raid_disks!= content->array.raid_disks) { |
110 | if (devname) | |
e7b84f9d N |
111 | pr_err("%s requires wrong number of drives.\n", |
112 | devname); | |
08fb91a3 N |
113 | return 0; |
114 | } | |
805d30b2 N |
115 | if (ident->member && ident->member[0]) { |
116 | /* content->text_version must match */ | |
117 | char *s = strchr(content->text_version+1, '/'); | |
118 | if (s == NULL) { | |
119 | if (devname) | |
e7b84f9d N |
120 | pr_err("%s is not a container and one is required.\n", |
121 | devname); | |
805d30b2 N |
122 | return 0; |
123 | } else if (strcmp(ident->member, s+1) != 0) { | |
124 | if (devname) | |
e7b84f9d N |
125 | pr_err("skipping wrong member %s is %s\n", |
126 | content->text_version, devname); | |
805d30b2 N |
127 | return 0; |
128 | } | |
129 | } | |
08fb91a3 N |
130 | return 1; |
131 | } | |
08fb91a3 | 132 | |
95425a89 N |
133 | static int select_devices(struct mddev_dev *devlist, |
134 | struct mddev_ident *ident, | |
135 | struct supertype **stp, | |
136 | struct mdinfo **contentp, | |
137 | struct context *c, | |
138 | int inargv, int auto_assem) | |
64c4757e | 139 | { |
a655e550 | 140 | struct mddev_dev *tmpdev; |
95425a89 N |
141 | int num_devs; |
142 | struct supertype *st = *stp; | |
98dbd966 | 143 | struct mdinfo *content = NULL; |
8cf2eb96 | 144 | int report_mismatch = ((inargv && c->verbose >= 0) || c->verbose > 0); |
cbeeb0e5 | 145 | struct domainlist *domains = NULL; |
60e1bc1a | 146 | |
5787fa49 NB |
147 | tmpdev = devlist; num_devs = 0; |
148 | while (tmpdev) { | |
da6b5ca9 NB |
149 | if (tmpdev->used) |
150 | tmpdev->used = 2; | |
151 | else | |
152 | num_devs++; | |
0431869c | 153 | tmpdev->disposition = 0; |
5787fa49 NB |
154 | tmpdev = tmpdev->next; |
155 | } | |
5787fa49 | 156 | |
811e6cbe NB |
157 | /* first walk the list of devices to find a consistent set |
158 | * that match the criterea, if that is possible. | |
c30e5369 | 159 | * We flag the ones we like with 'used'. |
811e6cbe NB |
160 | */ |
161 | for (tmpdev = devlist; | |
162 | tmpdev; | |
5083d66b | 163 | tmpdev = tmpdev ? tmpdev->next : NULL) { |
811e6cbe | 164 | char *devname = tmpdev->devname; |
64c4757e NB |
165 | int dfd; |
166 | struct stat stb; | |
518a60f3 | 167 | struct supertype *tst; |
4e8d9f0a | 168 | struct dev_policy *pol = NULL; |
5083d66b | 169 | int found_container = 0; |
52826846 | 170 | |
95425a89 N |
171 | if (tmpdev->used > 1) |
172 | continue; | |
da6b5ca9 | 173 | |
c39b2e63 N |
174 | if (ident->container) { |
175 | if (ident->container[0] == '/' && | |
176 | !same_dev(ident->container, devname)) { | |
177 | if (report_mismatch) | |
178 | pr_err("%s is not the container required (%s)\n", | |
179 | devname, ident->container); | |
180 | continue; | |
181 | } | |
182 | } else if (ident->devices && | |
183 | !match_oneof(ident->devices, devname)) { | |
184 | /* Note that we ignore the "device=" identifier if a | |
185 | * "container=" is given. Checking both is unnecessarily | |
186 | * complicated. | |
187 | */ | |
8cf2eb96 | 188 | if (report_mismatch) |
e7b84f9d | 189 | pr_err("%s is not one of %s\n", devname, ident->devices); |
52826846 | 190 | continue; |
56eedc1a | 191 | } |
4b1ac34b | 192 | |
518a60f3 JS |
193 | tst = dup_super(st); |
194 | ||
56d18859 | 195 | dfd = dev_open(devname, O_RDONLY); |
64c4757e | 196 | if (dfd < 0) { |
8cf2eb96 | 197 | if (report_mismatch) |
e7b84f9d N |
198 | pr_err("cannot open device %s: %s\n", |
199 | devname, strerror(errno)); | |
da6b5ca9 | 200 | tmpdev->used = 2; |
52826846 NB |
201 | } else if (fstat(dfd, &stb)< 0) { |
202 | /* Impossible! */ | |
e7b84f9d N |
203 | pr_err("fstat failed for %s: %s\n", |
204 | devname, strerror(errno)); | |
da6b5ca9 | 205 | tmpdev->used = 2; |
cd29a5c8 | 206 | } else if ((stb.st_mode & S_IFMT) != S_IFBLK) { |
e7b84f9d N |
207 | pr_err("%s is not a block device.\n", |
208 | devname); | |
da6b5ca9 | 209 | tmpdev->used = 2; |
5083d66b N |
210 | } else if (must_be_container(dfd)) { |
211 | if (st) { | |
212 | /* already found some components, this cannot | |
213 | * be another one. | |
214 | */ | |
8cf2eb96 | 215 | if (report_mismatch) |
e7b84f9d N |
216 | pr_err("%s is a container, but we are looking for components\n", |
217 | devname); | |
5083d66b | 218 | tmpdev->used = 2; |
71204a50 | 219 | #if !defined(MDASSEMBLE) || defined(MDASSEMBLE) && defined(MDASSEMBLE_AUTO) |
5083d66b | 220 | } if (!tst && (tst = super_by_fd(dfd, NULL)) == NULL) { |
8cf2eb96 | 221 | if (report_mismatch) |
e7b84f9d N |
222 | pr_err("not a recognisable container: %s\n", |
223 | devname); | |
5083d66b | 224 | tmpdev->used = 2; |
71204a50 | 225 | #endif |
417f346e HCP |
226 | } else if (!tst->ss->load_container |
227 | || tst->ss->load_container(tst, dfd, NULL)) { | |
8cf2eb96 | 228 | if (report_mismatch) |
e7b84f9d N |
229 | pr_err("no correct container type: %s\n", |
230 | devname); | |
5083d66b N |
231 | tmpdev->used = 2; |
232 | } else if (auto_assem && | |
4dd2df09 | 233 | !conf_test_metadata(tst->ss->name, (pol = devid_policy(stb.st_rdev)), |
4977146a | 234 | tst->ss->match_home(tst, c->homehost) == 1)) { |
8cf2eb96 | 235 | if (report_mismatch) |
7a862a02 | 236 | pr_err("%s has metadata type %s for which auto-assembly is disabled\n", |
e7b84f9d | 237 | devname, tst->ss->name); |
5083d66b N |
238 | tmpdev->used = 2; |
239 | } else | |
240 | found_container = 1; | |
52826846 | 241 | } else { |
5083d66b | 242 | if (!tst && (tst = guess_super(dfd)) == NULL) { |
8cf2eb96 | 243 | if (report_mismatch) |
e7b84f9d N |
244 | pr_err("no recogniseable superblock on %s\n", |
245 | devname); | |
5083d66b N |
246 | tmpdev->used = 2; |
247 | } else if (tst->ss->load_super(tst,dfd, NULL)) { | |
8cf2eb96 | 248 | if (report_mismatch) |
e7b84f9d N |
249 | pr_err("no RAID superblock on %s\n", |
250 | devname); | |
5083d66b N |
251 | tmpdev->used = 2; |
252 | } else if (tst->ss->compare_super == NULL) { | |
8cf2eb96 | 253 | if (report_mismatch) |
e7b84f9d N |
254 | pr_err("Cannot assemble %s metadata on %s\n", |
255 | tst->ss->name, devname); | |
5083d66b N |
256 | tmpdev->used = 2; |
257 | } else if (auto_assem && st == NULL && | |
4dd2df09 | 258 | !conf_test_metadata(tst->ss->name, (pol = devid_policy(stb.st_rdev)), |
4977146a | 259 | tst->ss->match_home(tst, c->homehost) == 1)) { |
8cf2eb96 | 260 | if (report_mismatch) |
7a862a02 | 261 | pr_err("%s has metadata type %s for which auto-assembly is disabled\n", |
e7b84f9d | 262 | devname, tst->ss->name); |
5083d66b N |
263 | tmpdev->used = 2; |
264 | } | |
64c4757e | 265 | } |
c06487ce | 266 | if (dfd >= 0) close(dfd); |
d68ea4d7 | 267 | if (tmpdev->used == 2) { |
d4386799 | 268 | if (auto_assem || !inargv) |
d68ea4d7 N |
269 | /* Ignore unrecognised devices during auto-assembly */ |
270 | goto loop; | |
271 | if (ident->uuid_set || ident->name[0] || | |
272 | ident->super_minor != UnSet) | |
273 | /* Ignore unrecognised device if looking for | |
274 | * specific array */ | |
275 | goto loop; | |
d68ea4d7 | 276 | |
e7b84f9d | 277 | pr_err("%s has no superblock - assembly aborted\n", |
79f9f56d | 278 | devname); |
d68ea4d7 N |
279 | if (st) |
280 | st->ss->free_super(st); | |
281 | dev_policy_free(pol); | |
cbeeb0e5 | 282 | domain_free(domains); |
95425a89 | 283 | return -1; |
d68ea4d7 | 284 | } |
52826846 | 285 | |
5083d66b | 286 | if (found_container) { |
9008ed1c N |
287 | /* tmpdev is a container. We need to be either |
288 | * looking for a member, or auto-assembling | |
289 | */ | |
56d18859 N |
290 | /* should be safe to try an exclusive open now, we |
291 | * have rejected anything that some other mdadm might | |
292 | * be looking at | |
293 | */ | |
294 | dfd = dev_open(devname, O_RDONLY | O_EXCL); | |
295 | if (dfd < 0) { | |
8cf2eb96 | 296 | if (report_mismatch) |
e7b84f9d | 297 | pr_err("%s is busy - skipping\n", devname); |
56d18859 N |
298 | goto loop; |
299 | } | |
300 | close(dfd); | |
9008ed1c | 301 | |
c39b2e63 N |
302 | if (ident->container && ident->container[0] != '/') { |
303 | /* we have a uuid */ | |
304 | int uuid[4]; | |
87477e6d | 305 | |
c39b2e63 N |
306 | content = *contentp; |
307 | tst->ss->getinfo_super(tst, content, NULL); | |
87477e6d | 308 | |
c39b2e63 N |
309 | if (!parse_uuid(ident->container, uuid) || |
310 | !same_uuid(content->uuid, uuid, tst->ss->swapuuid)) { | |
311 | if (report_mismatch) | |
312 | pr_err("%s has wrong UUID to be required container\n", | |
313 | devname); | |
314 | goto loop; | |
9008ed1c N |
315 | } |
316 | } | |
317 | /* It is worth looking inside this container. | |
318 | */ | |
4977146a | 319 | if (c->verbose > 0) |
e7b84f9d | 320 | pr_err("looking in container %s\n", |
79f9f56d | 321 | devname); |
1415fe4b | 322 | |
88cef9b3 N |
323 | for (content = tst->ss->container_content(tst, NULL); |
324 | content; | |
325 | content = content->next) { | |
1415fe4b | 326 | |
88cef9b3 | 327 | if (!ident_matches(ident, content, tst, |
4977146a | 328 | c->homehost, c->update, |
8cf2eb96 | 329 | report_mismatch ? devname : NULL)) |
88cef9b3 N |
330 | /* message already printed */; |
331 | else if (is_member_busy(content->text_version)) { | |
8cf2eb96 | 332 | if (report_mismatch) |
e7b84f9d | 333 | pr_err("member %s in %s is already assembled\n", |
79f9f56d N |
334 | content->text_version, |
335 | devname); | |
81219e70 LM |
336 | } else if (content->array.state & (1<<MD_SB_BLOCK_VOLUME)) { |
337 | /* do not assemble arrays with unsupported configurations */ | |
e7b84f9d | 338 | pr_err("Cannot activate member %s in %s.\n", |
79f9f56d N |
339 | content->text_version, |
340 | devname); | |
88cef9b3 N |
341 | } else |
342 | break; | |
343 | } | |
344 | if (!content) { | |
f7ad3ccc | 345 | tmpdev->used = 2; |
88cef9b3 | 346 | goto loop; /* empty container */ |
fa031239 | 347 | } |
88cef9b3 | 348 | |
9008ed1c | 349 | st = tst; tst = NULL; |
4c1c3ad8 | 350 | if (!auto_assem && inargv && tmpdev->next != NULL) { |
7a862a02 | 351 | pr_err("%s is a container, but is not only device given: confused and aborting\n", |
79f9f56d | 352 | devname); |
9008ed1c | 353 | st->ss->free_super(st); |
4e8d9f0a | 354 | dev_policy_free(pol); |
cbeeb0e5 | 355 | domain_free(domains); |
95425a89 | 356 | return -1; |
9008ed1c | 357 | } |
4977146a | 358 | if (c->verbose > 0) |
e7b84f9d | 359 | pr_err("found match on member %s in %s\n", |
79f9f56d | 360 | content->text_version, devname); |
bac0d92e | 361 | |
5083d66b N |
362 | /* make sure we finished the loop */ |
363 | tmpdev = NULL; | |
bac0d92e | 364 | goto loop; |
5083d66b | 365 | } else { |
95425a89 | 366 | content = *contentp; |
5083d66b N |
367 | tst->ss->getinfo_super(tst, content, NULL); |
368 | ||
369 | if (!ident_matches(ident, content, tst, | |
4977146a | 370 | c->homehost, c->update, |
8cf2eb96 | 371 | report_mismatch ? devname : NULL)) |
df37ffc0 | 372 | goto loop; |
66eb2c93 | 373 | |
5141638c N |
374 | if (auto_assem) { |
375 | /* Never auto-assemble things that conflict | |
376 | * with mdadm.conf in some way | |
1d04e275 | 377 | */ |
5141638c N |
378 | struct mddev_ident *match; |
379 | int rv = 0; | |
380 | ||
381 | match = conf_match(tst, content, devname, | |
382 | report_mismatch ? c->verbose : -1, | |
383 | &rv); | |
384 | if (!match && rv == 2) | |
385 | goto loop; | |
386 | if (match && match->devname && | |
387 | strcasecmp(match->devname, "<ignore>") == 0) { | |
388 | if (report_mismatch) | |
389 | pr_err("%s is a member of an explicitly ignored array\n", | |
390 | devname); | |
391 | goto loop; | |
392 | } | |
393 | if (match && !ident_matches(match, content, tst, | |
394 | c->homehost, c->update, | |
395 | report_mismatch ? devname : NULL)) | |
396 | /* Array exists in mdadm.conf but some | |
397 | * details don't match, so reject it | |
398 | */ | |
399 | goto loop; | |
400 | } | |
66eb2c93 | 401 | |
56d18859 N |
402 | /* should be safe to try an exclusive open now, we |
403 | * have rejected anything that some other mdadm might | |
404 | * be looking at | |
405 | */ | |
406 | dfd = dev_open(devname, O_RDONLY | O_EXCL); | |
407 | if (dfd < 0) { | |
8cf2eb96 | 408 | if (report_mismatch) |
e7b84f9d | 409 | pr_err("%s is busy - skipping\n", devname); |
56d18859 N |
410 | goto loop; |
411 | } | |
412 | close(dfd); | |
413 | ||
5083d66b N |
414 | if (st == NULL) |
415 | st = dup_super(tst); | |
416 | if (st->minor_version == -1) | |
417 | st->minor_version = tst->minor_version; | |
ed7fc6b4 AC |
418 | |
419 | if (memcmp(content->uuid, uuid_zero, | |
420 | sizeof(int[4])) == 0) { | |
421 | /* this is a floating spare. It cannot define | |
422 | * an array unless there are no more arrays of | |
423 | * this type to be found. It can be included | |
424 | * in an array of this type though. | |
425 | */ | |
426 | tmpdev->used = 3; | |
427 | goto loop; | |
428 | } | |
429 | ||
5083d66b N |
430 | if (st->ss != tst->ss || |
431 | st->minor_version != tst->minor_version || | |
432 | st->ss->compare_super(st, tst) != 0) { | |
433 | /* Some mismatch. If exactly one array matches this host, | |
434 | * we can resolve on that one. | |
435 | * Or, if we are auto assembling, we just ignore the second | |
436 | * for now. | |
437 | */ | |
438 | if (auto_assem) | |
439 | goto loop; | |
4977146a N |
440 | if (c->homehost) { |
441 | int first = st->ss->match_home(st, c->homehost); | |
442 | int last = tst->ss->match_home(tst, c->homehost); | |
5083d66b N |
443 | if (first != last && |
444 | (first == 1 || last == 1)) { | |
445 | /* We can do something */ | |
446 | if (first) {/* just ignore this one */ | |
8cf2eb96 | 447 | if (report_mismatch) |
e7b84f9d | 448 | pr_err("%s misses out due to wrong homehost\n", |
79f9f56d | 449 | devname); |
5083d66b N |
450 | goto loop; |
451 | } else { /* reject all those sofar */ | |
452 | struct mddev_dev *td; | |
8cf2eb96 | 453 | if (report_mismatch) |
e7b84f9d | 454 | pr_err("%s overrides previous devices due to good homehost\n", |
79f9f56d | 455 | devname); |
5083d66b N |
456 | for (td=devlist; td != tmpdev; td=td->next) |
457 | if (td->used == 1) | |
458 | td->used = 0; | |
459 | tmpdev->used = 1; | |
460 | goto loop; | |
461 | } | |
83b6208e NB |
462 | } |
463 | } | |
e7b84f9d | 464 | pr_err("superblock on %s doesn't match others - assembly aborted\n", |
79f9f56d | 465 | devname); |
5083d66b N |
466 | tst->ss->free_super(tst); |
467 | st->ss->free_super(st); | |
468 | dev_policy_free(pol); | |
cbeeb0e5 | 469 | domain_free(domains); |
95425a89 | 470 | return -1; |
83b6208e | 471 | } |
5083d66b | 472 | tmpdev->used = 1; |
64c4757e | 473 | } |
df37ffc0 | 474 | loop: |
cbeeb0e5 | 475 | /* Collect domain information from members only */ |
26b05aea AC |
476 | if (tmpdev && tmpdev->used == 1) { |
477 | if (!pol) | |
4dd2df09 | 478 | pol = devid_policy(stb.st_rdev); |
cbeeb0e5 | 479 | domain_merge(&domains, pol, tst?tst->ss->name:NULL); |
26b05aea | 480 | } |
4e8d9f0a N |
481 | dev_policy_free(pol); |
482 | pol = NULL; | |
3d2b16e7 NB |
483 | if (tst) |
484 | tst->ss->free_super(tst); | |
811e6cbe NB |
485 | } |
486 | ||
ed7fc6b4 | 487 | /* Check if we found some imsm spares but no members */ |
3c7b4a25 CA |
488 | if ((auto_assem || |
489 | (ident->uuid_set && | |
490 | memcmp(uuid_zero, ident->uuid,sizeof(uuid_zero)) == 0)) && | |
491 | (!st || !st->sb)) | |
ed7fc6b4 AC |
492 | for (tmpdev = devlist; tmpdev; tmpdev = tmpdev->next) { |
493 | if (tmpdev->used != 3) | |
494 | continue; | |
495 | tmpdev->used = 1; | |
95425a89 | 496 | content = *contentp; |
ed7fc6b4 AC |
497 | |
498 | if (!st->sb) { | |
499 | /* we need sb from one of the spares */ | |
500 | int dfd = dev_open(tmpdev->devname, O_RDONLY); | |
501 | if (dfd < 0 || | |
502 | st->ss->load_super(st, dfd, NULL)) | |
503 | tmpdev->used = 2; | |
504 | if (dfd > 0) | |
505 | close(dfd); | |
506 | } | |
507 | } | |
508 | ||
cbeeb0e5 AC |
509 | /* Now reject spares that don't match domains of identified members */ |
510 | for (tmpdev = devlist; tmpdev; tmpdev = tmpdev->next) { | |
511 | struct stat stb; | |
512 | if (tmpdev->used != 3) | |
513 | continue; | |
514 | if (stat(tmpdev->devname, &stb)< 0) { | |
e7b84f9d | 515 | pr_err("fstat failed for %s: %s\n", |
79f9f56d | 516 | tmpdev->devname, strerror(errno)); |
cbeeb0e5 AC |
517 | tmpdev->used = 2; |
518 | } else { | |
4dd2df09 | 519 | struct dev_policy *pol = devid_policy(stb.st_rdev); |
a5d10dce N |
520 | int dt = domain_test(domains, pol, NULL); |
521 | if (inargv && dt != 0) | |
522 | /* take this spare as domains match | |
523 | * if there are any */ | |
524 | tmpdev->used = 1; | |
525 | else if (!inargv && dt == 1) | |
526 | /* device wasn't explicitly listed, so need | |
527 | * explicit domain match - which we have */ | |
cbeeb0e5 AC |
528 | tmpdev->used = 1; |
529 | else | |
530 | /* if domains don't match mark as unused */ | |
531 | tmpdev->used = 0; | |
532 | dev_policy_free(pol); | |
533 | } | |
534 | } | |
535 | domain_free(domains); | |
95425a89 N |
536 | *stp = st; |
537 | if (st && st->sb && content == *contentp) | |
538 | st->ss->getinfo_super(st, content, NULL); | |
539 | *contentp = content; | |
540 | ||
541 | return num_devs; | |
542 | } | |
543 | ||
2c355c22 N |
544 | struct devs { |
545 | char *devname; | |
546 | int uptodate; /* set once we decide that this device is as | |
547 | * recent as everything else in the array. | |
548 | */ | |
549 | int included; /* set if the device is already in the array | |
550 | * due to a previous '-I' | |
551 | */ | |
552 | struct mdinfo i; | |
553 | }; | |
554 | ||
555 | static int load_devices(struct devs *devices, char *devmap, | |
df842e69 | 556 | struct mddev_ident *ident, struct supertype **stp, |
2c355c22 N |
557 | struct mddev_dev *devlist, struct context *c, |
558 | struct mdinfo *content, | |
559 | int mdfd, char *mddev, | |
560 | int *most_recentp, int *bestcntp, int **bestp, | |
561 | int inargv) | |
562 | { | |
563 | struct mddev_dev *tmpdev; | |
564 | int devcnt = 0; | |
565 | int nextspare = 0; | |
566 | #ifndef MDASSEMBLE | |
567 | int bitmap_done = 0; | |
568 | #endif | |
a792ece6 | 569 | int most_recent = -1; |
2c355c22 N |
570 | int bestcnt = 0; |
571 | int *best = *bestp; | |
df842e69 | 572 | struct supertype *st = *stp; |
2c355c22 N |
573 | |
574 | for (tmpdev = devlist; tmpdev; tmpdev=tmpdev->next) { | |
575 | char *devname = tmpdev->devname; | |
576 | struct stat stb; | |
9ee314da | 577 | struct supertype *tst; |
2c355c22 | 578 | int i; |
e9e6894d | 579 | int dfd; |
2c355c22 N |
580 | |
581 | if (tmpdev->used != 1) | |
582 | continue; | |
583 | /* looks like a good enough match to update the super block if needed */ | |
584 | #ifndef MDASSEMBLE | |
585 | if (c->update) { | |
2c355c22 N |
586 | /* prepare useful information in info structures */ |
587 | struct stat stb2; | |
2c355c22 N |
588 | int err; |
589 | fstat(mdfd, &stb2); | |
590 | ||
591 | if (strcmp(c->update, "uuid")==0 && | |
592 | !ident->uuid_set) { | |
593 | int rfd; | |
594 | if ((rfd = open("/dev/urandom", O_RDONLY)) < 0 || | |
595 | read(rfd, ident->uuid, 16) != 16) { | |
596 | *(__u32*)(ident->uuid) = random(); | |
597 | *(__u32*)(ident->uuid+1) = random(); | |
598 | *(__u32*)(ident->uuid+2) = random(); | |
599 | *(__u32*)(ident->uuid+3) = random(); | |
600 | } | |
601 | if (rfd >= 0) close(rfd); | |
602 | } | |
603 | dfd = dev_open(devname, | |
604 | tmpdev->disposition == 'I' | |
605 | ? O_RDWR : (O_RDWR|O_EXCL)); | |
606 | ||
607 | tst = dup_super(st); | |
608 | if (dfd < 0 || tst->ss->load_super(tst, dfd, NULL) != 0) { | |
609 | pr_err("cannot re-read metadata from %s - aborting\n", | |
610 | devname); | |
611 | if (dfd >= 0) | |
612 | close(dfd); | |
613 | close(mdfd); | |
614 | free(devices); | |
615 | free(devmap); | |
9ee314da N |
616 | tst->ss->free_super(tst); |
617 | free(tst); | |
df842e69 | 618 | *stp = st; |
2c355c22 N |
619 | return -1; |
620 | } | |
621 | tst->ss->getinfo_super(tst, content, devmap + devcnt * content->array.raid_disks); | |
622 | ||
623 | memcpy(content->uuid, ident->uuid, 16); | |
624 | strcpy(content->name, ident->name); | |
625 | content->array.md_minor = minor(stb2.st_rdev); | |
626 | ||
627 | if (strcmp(c->update, "byteorder") == 0) | |
628 | err = 0; | |
629 | else | |
630 | err = tst->ss->update_super(tst, content, c->update, | |
631 | devname, c->verbose, | |
632 | ident->uuid_set, | |
633 | c->homehost); | |
634 | if (err < 0) { | |
afa368f4 | 635 | if (err == -1) |
7a862a02 | 636 | pr_err("--update=%s not understood for %s metadata\n", |
afa368f4 | 637 | c->update, tst->ss->name); |
2c355c22 N |
638 | tst->ss->free_super(tst); |
639 | free(tst); | |
640 | close(mdfd); | |
641 | close(dfd); | |
642 | free(devices); | |
643 | free(devmap); | |
df842e69 | 644 | *stp = st; |
2c355c22 N |
645 | return -1; |
646 | } | |
647 | if (strcmp(c->update, "uuid")==0 && | |
648 | !ident->uuid_set) { | |
649 | ident->uuid_set = 1; | |
650 | memcpy(ident->uuid, content->uuid, 16); | |
651 | } | |
652 | if (tst->ss->store_super(tst, dfd)) | |
653 | pr_err("Could not re-write superblock on %s.\n", | |
654 | devname); | |
2c355c22 N |
655 | |
656 | if (strcmp(c->update, "uuid")==0 && | |
657 | ident->bitmap_fd >= 0 && !bitmap_done) { | |
658 | if (bitmap_update_uuid(ident->bitmap_fd, | |
659 | content->uuid, | |
660 | tst->ss->swapuuid) != 0) | |
661 | pr_err("Could not update uuid on external bitmap.\n"); | |
662 | else | |
663 | bitmap_done = 1; | |
664 | } | |
2c355c22 N |
665 | } else |
666 | #endif | |
667 | { | |
e9e6894d N |
668 | dfd = dev_open(devname, |
669 | tmpdev->disposition == 'I' | |
670 | ? O_RDWR : (O_RDWR|O_EXCL)); | |
9ee314da | 671 | tst = dup_super(st); |
2c355c22 N |
672 | |
673 | if (dfd < 0 || tst->ss->load_super(tst, dfd, NULL) != 0) { | |
674 | pr_err("cannot re-read metadata from %s - aborting\n", | |
675 | devname); | |
676 | if (dfd >= 0) | |
677 | close(dfd); | |
678 | close(mdfd); | |
679 | free(devices); | |
680 | free(devmap); | |
9ee314da N |
681 | tst->ss->free_super(tst); |
682 | free(tst); | |
df842e69 | 683 | *stp = st; |
2c355c22 N |
684 | return -1; |
685 | } | |
686 | tst->ss->getinfo_super(tst, content, devmap + devcnt * content->array.raid_disks); | |
2c355c22 N |
687 | } |
688 | ||
e9e6894d N |
689 | fstat(dfd, &stb); |
690 | close(dfd); | |
2c355c22 N |
691 | |
692 | if (c->verbose > 0) | |
aacb2f81 N |
693 | pr_err("%s is identified as a member of %s, slot %d%s.\n", |
694 | devname, mddev, content->disk.raid_disk, | |
695 | (content->disk.state & (1<<MD_DISK_REPLACEMENT)) ? " replacement":""); | |
2c355c22 N |
696 | devices[devcnt].devname = devname; |
697 | devices[devcnt].uptodate = 0; | |
698 | devices[devcnt].included = (tmpdev->disposition == 'I'); | |
699 | devices[devcnt].i = *content; | |
700 | devices[devcnt].i.disk.major = major(stb.st_rdev); | |
701 | devices[devcnt].i.disk.minor = minor(stb.st_rdev); | |
f80057ae | 702 | |
a792ece6 N |
703 | if (devices[devcnt].i.disk.state == 6) { |
704 | if (most_recent < 0 || | |
705 | devices[devcnt].i.events | |
56bbc588 N |
706 | > devices[most_recent].i.events) { |
707 | struct supertype *tmp = tst; | |
708 | tst = st; | |
709 | st = tmp; | |
2c355c22 | 710 | most_recent = devcnt; |
56bbc588 | 711 | } |
a792ece6 | 712 | } |
9ee314da N |
713 | tst->ss->free_super(tst); |
714 | free(tst); | |
f80057ae | 715 | |
2c355c22 N |
716 | if (content->array.level == LEVEL_MULTIPATH) |
717 | /* with multipath, the raid_disk from the superblock is meaningless */ | |
718 | i = devcnt; | |
719 | else | |
720 | i = devices[devcnt].i.disk.raid_disk; | |
721 | if (i+1 == 0) { | |
aacb2f81 N |
722 | if (nextspare < content->array.raid_disks*2) |
723 | nextspare = content->array.raid_disks*2; | |
2c355c22 N |
724 | i = nextspare++; |
725 | } else { | |
aacb2f81 N |
726 | /* i is raid_disk - double it so there is room for |
727 | * replacements */ | |
728 | i *= 2; | |
729 | if (devices[devcnt].i.disk.state & (1<<MD_DISK_REPLACEMENT)) | |
730 | i++; | |
731 | if (i >= content->array.raid_disks*2 && | |
2c355c22 N |
732 | i >= nextspare) |
733 | nextspare = i+1; | |
734 | } | |
735 | if (i < 10000) { | |
736 | if (i >= bestcnt) { | |
737 | int newbestcnt = i+10; | |
738 | int *newbest = xmalloc(sizeof(int)*newbestcnt); | |
739 | int c; | |
740 | for (c=0; c < newbestcnt; c++) | |
741 | if (c < bestcnt) | |
742 | newbest[c] = best[c]; | |
743 | else | |
744 | newbest[c] = -1; | |
745 | if (best)free(best); | |
746 | best = newbest; | |
747 | bestcnt = newbestcnt; | |
748 | } | |
749 | if (best[i] >=0 && | |
750 | devices[best[i]].i.events | |
751 | == devices[devcnt].i.events | |
752 | && (devices[best[i]].i.disk.minor | |
753 | != devices[devcnt].i.disk.minor) | |
754 | && st->ss == &super0 | |
755 | && content->array.level != LEVEL_MULTIPATH) { | |
756 | /* two different devices with identical superblock. | |
757 | * Could be a mis-detection caused by overlapping | |
758 | * partitions. fail-safe. | |
759 | */ | |
7a862a02 N |
760 | pr_err("WARNING %s and %s appear to have very similar superblocks.\n" |
761 | " If they are really different, please --zero the superblock on one\n" | |
762 | " If they are the same or overlap, please remove one from %s.\n", | |
2c355c22 N |
763 | devices[best[i]].devname, devname, |
764 | inargv ? "the list" : | |
765 | "the\n DEVICE list in mdadm.conf" | |
766 | ); | |
767 | close(mdfd); | |
768 | free(devices); | |
769 | free(devmap); | |
df842e69 | 770 | *stp = st; |
2c355c22 N |
771 | return -1; |
772 | } | |
773 | if (best[i] == -1 | |
774 | || (devices[best[i]].i.events | |
775 | < devices[devcnt].i.events)) | |
776 | best[i] = devcnt; | |
777 | } | |
778 | devcnt++; | |
779 | } | |
a792ece6 N |
780 | if (most_recent >= 0) |
781 | *most_recentp = most_recent; | |
2c355c22 N |
782 | *bestcntp = bestcnt; |
783 | *bestp = best; | |
df842e69 | 784 | *stp = st; |
2c355c22 N |
785 | return devcnt; |
786 | } | |
787 | ||
9f5470ce N |
788 | static int force_array(struct mdinfo *content, |
789 | struct devs *devices, | |
790 | int *best, int bestcnt, char *avail, | |
791 | int most_recent, | |
792 | struct supertype *st, | |
793 | struct context *c) | |
794 | { | |
795 | int okcnt = 0; | |
796 | while (!enough(content->array.level, content->array.raid_disks, | |
797 | content->array.layout, 1, | |
798 | avail) | |
799 | || | |
800 | (content->reshape_active && content->delta_disks > 0 && | |
801 | !enough(content->array.level, (content->array.raid_disks | |
802 | - content->delta_disks), | |
803 | content->new_layout, 1, | |
804 | avail) | |
805 | )) { | |
806 | /* Choose the newest best drive which is | |
807 | * not up-to-date, update the superblock | |
808 | * and add it. | |
809 | */ | |
810 | int fd; | |
811 | struct supertype *tst; | |
812 | unsigned long long current_events; | |
813 | int chosen_drive = -1; | |
814 | int i; | |
815 | ||
f81a2b56 N |
816 | for (i = 0; |
817 | i < content->array.raid_disks * 2 && i < bestcnt; | |
818 | i += 2) { | |
9f5470ce | 819 | int j = best[i]; |
87af7267 N |
820 | if (j < 0) |
821 | continue; | |
822 | if (devices[j].uptodate) | |
823 | continue; | |
824 | if (devices[j].i.recovery_start != MaxSector) { | |
825 | int delta; | |
826 | if (!devices[j].i.reshape_active || | |
827 | devices[j].i.delta_disks <= 0) | |
828 | continue; | |
829 | /* When increasing number of devices, an | |
830 | * added device also appears to be | |
831 | * recovering. It is safe to include it | |
832 | * as long as it won't be a source of | |
833 | * data. | |
834 | * For now, just allow for last data | |
835 | * devices in RAID4 or last devices in RAID4/5/6. | |
836 | */ | |
837 | delta = devices[j].i.delta_disks; | |
838 | if (devices[j].i.array.level >= 4 && | |
839 | devices[j].i.array.level <= 6 && | |
840 | i/2 >= content->array.raid_disks - delta) | |
841 | /* OK */; | |
842 | else if (devices[j].i.array.level == 4 && | |
843 | i/2 >= content->array.raid_disks - delta - 1) | |
844 | /* OK */; | |
845 | else | |
846 | continue; | |
847 | } | |
848 | if (chosen_drive < 0 || | |
9f5470ce | 849 | devices[j].i.events |
87af7267 | 850 | > devices[chosen_drive].i.events) |
9f5470ce N |
851 | chosen_drive = j; |
852 | } | |
853 | if (chosen_drive < 0) | |
854 | break; | |
855 | current_events = devices[chosen_drive].i.events; | |
856 | add_another: | |
857 | if (c->verbose >= 0) | |
858 | pr_err("forcing event count in %s(%d) from %d upto %d\n", | |
79f9f56d N |
859 | devices[chosen_drive].devname, |
860 | devices[chosen_drive].i.disk.raid_disk, | |
861 | (int)(devices[chosen_drive].i.events), | |
862 | (int)(devices[most_recent].i.events)); | |
9f5470ce N |
863 | fd = dev_open(devices[chosen_drive].devname, |
864 | devices[chosen_drive].included ? O_RDWR | |
865 | : (O_RDWR|O_EXCL)); | |
866 | if (fd < 0) { | |
867 | pr_err("Couldn't open %s for write - not updating\n", | |
79f9f56d | 868 | devices[chosen_drive].devname); |
9f5470ce N |
869 | devices[chosen_drive].i.events = 0; |
870 | continue; | |
871 | } | |
872 | tst = dup_super(st); | |
873 | if (tst->ss->load_super(tst,fd, NULL)) { | |
874 | close(fd); | |
875 | pr_err("RAID superblock disappeared from %s - not updating.\n", | |
79f9f56d | 876 | devices[chosen_drive].devname); |
9f5470ce N |
877 | devices[chosen_drive].i.events = 0; |
878 | continue; | |
879 | } | |
880 | content->events = devices[most_recent].i.events; | |
881 | tst->ss->update_super(tst, content, "force-one", | |
79f9f56d N |
882 | devices[chosen_drive].devname, c->verbose, |
883 | 0, NULL); | |
9f5470ce N |
884 | |
885 | if (tst->ss->store_super(tst, fd)) { | |
886 | close(fd); | |
887 | pr_err("Could not re-write superblock on %s\n", | |
79f9f56d | 888 | devices[chosen_drive].devname); |
9f5470ce N |
889 | devices[chosen_drive].i.events = 0; |
890 | tst->ss->free_super(tst); | |
891 | continue; | |
892 | } | |
893 | close(fd); | |
894 | devices[chosen_drive].i.events = devices[most_recent].i.events; | |
895 | devices[chosen_drive].uptodate = 1; | |
896 | avail[chosen_drive] = 1; | |
897 | okcnt++; | |
898 | tst->ss->free_super(tst); | |
899 | ||
900 | /* If there are any other drives of the same vintage, | |
901 | * add them in as well. We can't lose and we might gain | |
902 | */ | |
f81a2b56 N |
903 | for (i = 0; |
904 | i < content->array.raid_disks * 2 && i < bestcnt ; | |
905 | i += 2) { | |
9f5470ce N |
906 | int j = best[i]; |
907 | if (j >= 0 && | |
908 | !devices[j].uptodate && | |
909 | devices[j].i.recovery_start == MaxSector && | |
910 | devices[j].i.events == current_events) { | |
911 | chosen_drive = j; | |
912 | goto add_another; | |
913 | } | |
914 | } | |
915 | } | |
916 | return okcnt; | |
917 | } | |
918 | ||
ddc1b11f N |
919 | static int start_array(int mdfd, |
920 | char *mddev, | |
921 | struct mdinfo *content, | |
922 | struct supertype *st, | |
923 | struct mddev_ident *ident, | |
924 | int *best, int bestcnt, | |
925 | int chosen_drive, | |
926 | struct devs *devices, | |
927 | unsigned int okcnt, | |
928 | unsigned int sparecnt, | |
929 | unsigned int rebuilding_cnt, | |
930 | struct context *c, | |
931 | int clean, char *avail, | |
8cde842b | 932 | int start_partial_ok, |
71417de6 | 933 | int err_ok, |
8cde842b | 934 | int was_forced |
ddc1b11f N |
935 | ) |
936 | { | |
937 | int rv; | |
938 | int i; | |
939 | unsigned int req_cnt; | |
940 | ||
941 | rv = set_array_info(mdfd, st, content); | |
71417de6 | 942 | if (rv && !err_ok) { |
ddc1b11f N |
943 | pr_err("failed to set array info for %s: %s\n", |
944 | mddev, strerror(errno)); | |
945 | return 1; | |
946 | } | |
947 | if (ident->bitmap_fd >= 0) { | |
948 | if (ioctl(mdfd, SET_BITMAP_FILE, ident->bitmap_fd) != 0) { | |
949 | pr_err("SET_BITMAP_FILE failed.\n"); | |
950 | return 1; | |
951 | } | |
952 | } else if (ident->bitmap_file) { | |
953 | /* From config file */ | |
954 | int bmfd = open(ident->bitmap_file, O_RDWR); | |
955 | if (bmfd < 0) { | |
956 | pr_err("Could not open bitmap file %s\n", | |
957 | ident->bitmap_file); | |
958 | return 1; | |
959 | } | |
960 | if (ioctl(mdfd, SET_BITMAP_FILE, bmfd) != 0) { | |
961 | pr_err("Failed to set bitmapfile for %s\n", mddev); | |
962 | close(bmfd); | |
963 | return 1; | |
964 | } | |
965 | close(bmfd); | |
966 | } | |
967 | ||
968 | /* First, add the raid disks, but add the chosen one last */ | |
969 | for (i=0; i<= bestcnt; i++) { | |
970 | int j; | |
971 | if (i < bestcnt) { | |
972 | j = best[i]; | |
973 | if (j == chosen_drive) | |
974 | continue; | |
975 | } else | |
976 | j = chosen_drive; | |
977 | ||
978 | if (j >= 0 && !devices[j].included) { | |
979 | int dfd = dev_open(devices[j].devname, | |
980 | O_RDWR|O_EXCL); | |
981 | if (dfd >= 0) { | |
982 | remove_partitions(dfd); | |
983 | close(dfd); | |
984 | } | |
985 | rv = add_disk(mdfd, st, content, &devices[j].i); | |
986 | ||
987 | if (rv) { | |
7a862a02 | 988 | pr_err("failed to add %s to %s: %s\n", |
ddc1b11f N |
989 | devices[j].devname, |
990 | mddev, | |
991 | strerror(errno)); | |
aacb2f81 | 992 | if (i < content->array.raid_disks * 2 |
ddc1b11f N |
993 | || i == bestcnt) |
994 | okcnt--; | |
995 | else | |
996 | sparecnt--; | |
997 | } else if (c->verbose > 0) | |
aacb2f81 | 998 | pr_err("added %s to %s as %d%s%s\n", |
ddc1b11f N |
999 | devices[j].devname, mddev, |
1000 | devices[j].i.disk.raid_disk, | |
1001 | devices[j].uptodate?"": | |
aacb2f81 N |
1002 | " (possibly out of date)", |
1003 | (devices[j].i.disk.state & (1<<MD_DISK_REPLACEMENT))?" replacement":""); | |
ddc1b11f N |
1004 | } else if (j >= 0) { |
1005 | if (c->verbose > 0) | |
1006 | pr_err("%s is already in %s as %d\n", | |
1007 | devices[j].devname, mddev, | |
1008 | devices[j].i.disk.raid_disk); | |
aacb2f81 N |
1009 | } else if (c->verbose > 0 && i < content->array.raid_disks*2 |
1010 | && (i&1) == 0) | |
ddc1b11f | 1011 | pr_err("no uptodate device for slot %d of %s\n", |
ee466574 | 1012 | i/2, mddev); |
ddc1b11f N |
1013 | } |
1014 | ||
1015 | if (content->array.level == LEVEL_CONTAINER) { | |
1016 | if (c->verbose >= 0) { | |
7a862a02 | 1017 | pr_err("Container %s has been assembled with %d drive%s", |
ddc1b11f N |
1018 | mddev, okcnt+sparecnt, okcnt+sparecnt==1?"":"s"); |
1019 | if (okcnt < (unsigned)content->array.raid_disks) | |
1020 | fprintf(stderr, " (out of %d)", | |
1021 | content->array.raid_disks); | |
1022 | fprintf(stderr, "\n"); | |
1023 | } | |
0c21b485 PB |
1024 | |
1025 | if (st->ss->validate_container) { | |
1026 | struct mdinfo *devices_list; | |
1027 | struct mdinfo *info_devices = xmalloc(sizeof(struct mdinfo)*(okcnt+sparecnt)); | |
1028 | unsigned int count; | |
1029 | devices_list = NULL; | |
1030 | for (count = 0; count < okcnt+sparecnt; count++) { | |
1031 | info_devices[count] = devices[count].i; | |
1032 | info_devices[count].next = devices_list; | |
1033 | devices_list = &info_devices[count]; | |
1034 | } | |
1035 | if (st->ss->validate_container(devices_list)) | |
1036 | pr_err("Mismatch detected!\n"); | |
1037 | free(info_devices); | |
1038 | } | |
1039 | ||
ddc1b11f N |
1040 | st->ss->free_super(st); |
1041 | sysfs_uevent(content, "change"); | |
284546ef N |
1042 | if (err_ok && okcnt < (unsigned)content->array.raid_disks) |
1043 | /* Was partial, is still partial, so signal an error | |
1044 | * to ensure we don't retry */ | |
1045 | return 1; | |
ddc1b11f N |
1046 | return 0; |
1047 | } | |
1048 | ||
1049 | /* Get number of in-sync devices according to the superblock. | |
1050 | * We must have this number to start the array without -s or -R | |
1051 | */ | |
1052 | req_cnt = content->array.working_disks; | |
1053 | ||
1054 | if (c->runstop == 1 || | |
1055 | (c->runstop <= 0 && | |
1056 | ( enough(content->array.level, content->array.raid_disks, | |
1057 | content->array.layout, clean, avail) && | |
1058 | (okcnt + rebuilding_cnt >= req_cnt || start_partial_ok) | |
1059 | ))) { | |
1060 | /* This array is good-to-go. | |
1061 | * If a reshape is in progress then we might need to | |
1062 | * continue monitoring it. In that case we start | |
1063 | * it read-only and let the grow code make it writable. | |
1064 | */ | |
1065 | int rv; | |
1066 | #ifndef MDASSEMBLE | |
1067 | if (content->reshape_active && | |
1068 | !(content->reshape_active & RESHAPE_NO_BACKUP) && | |
1069 | content->delta_disks <= 0) { | |
be7c26b4 N |
1070 | if (!c->backup_file) { |
1071 | pr_err("%s: Need a backup file to complete reshape of this array.\n", | |
1072 | mddev); | |
1073 | pr_err("Please provided one with \"--backup-file=...\"\n"); | |
1074 | if (c->update && | |
1075 | strcmp(c->update, "revert-reshape") == 0) | |
1076 | pr_err("(Don't specify --update=revert-reshape again, that part succeeded.)\n"); | |
1077 | return 1; | |
1078 | } | |
ddc1b11f N |
1079 | rv = sysfs_set_str(content, NULL, |
1080 | "array_state", "readonly"); | |
1081 | if (rv == 0) | |
1082 | rv = Grow_continue(mdfd, st, content, | |
06e293d0 | 1083 | c->backup_file, 0, |
ddc1b11f N |
1084 | c->freeze_reshape); |
1085 | } else if (c->readonly && | |
1086 | sysfs_attribute_available( | |
1087 | content, NULL, "array_state")) { | |
1088 | rv = sysfs_set_str(content, NULL, | |
1089 | "array_state", "readonly"); | |
1090 | } else | |
1091 | #endif | |
1092 | rv = ioctl(mdfd, RUN_ARRAY, NULL); | |
8832342d | 1093 | reopen_mddev(mdfd); /* drop O_EXCL */ |
ddc1b11f N |
1094 | if (rv == 0) { |
1095 | if (c->verbose >= 0) { | |
1096 | pr_err("%s has been started with %d drive%s", | |
1097 | mddev, okcnt, okcnt==1?"":"s"); | |
1098 | if (okcnt < (unsigned)content->array.raid_disks) | |
1099 | fprintf(stderr, " (out of %d)", content->array.raid_disks); | |
1100 | if (rebuilding_cnt) | |
1101 | fprintf(stderr, "%s %d rebuilding", sparecnt?",":" and", rebuilding_cnt); | |
1102 | if (sparecnt) | |
1103 | fprintf(stderr, " and %d spare%s", sparecnt, sparecnt==1?"":"s"); | |
1104 | fprintf(stderr, ".\n"); | |
1105 | } | |
1106 | if (content->reshape_active && | |
1107 | content->array.level >= 4 && | |
1108 | content->array.level <= 6) { | |
1109 | /* might need to increase the size | |
1110 | * of the stripe cache - default is 256 | |
1111 | */ | |
1112 | if (256 < 4 * (content->array.chunk_size/4096)) { | |
4dd2df09 | 1113 | struct mdinfo *sra = sysfs_read(mdfd, NULL, 0); |
ddc1b11f N |
1114 | if (sra) |
1115 | sysfs_set_num(sra, NULL, | |
1116 | "stripe_cache_size", | |
1117 | (4 * content->array.chunk_size / 4096) + 1); | |
1118 | sysfs_free(sra); | |
1119 | } | |
1120 | } | |
1121 | if (okcnt < (unsigned)content->array.raid_disks) { | |
1122 | /* If any devices did not get added | |
1123 | * because the kernel rejected them based | |
1124 | * on event count, try adding them | |
1125 | * again providing the action policy is | |
1126 | * 're-add' or greater. The bitmap | |
1127 | * might allow them to be included, or | |
1128 | * they will become spares. | |
1129 | */ | |
1130 | for (i = 0; i < bestcnt; i++) { | |
1131 | int j = best[i]; | |
1132 | if (j >= 0 && !devices[j].uptodate) { | |
1133 | if (!disk_action_allows(&devices[j].i, st->ss->name, act_re_add)) | |
1134 | continue; | |
1135 | rv = add_disk(mdfd, st, content, | |
1136 | &devices[j].i); | |
1137 | if (rv == 0 && c->verbose >= 0) | |
1138 | pr_err("%s has been re-added.\n", | |
1139 | devices[j].devname); | |
1140 | } | |
1141 | } | |
1142 | } | |
8cde842b N |
1143 | if (content->array.level == 6 && |
1144 | okcnt + 1 == (unsigned)content->array.raid_disks && | |
1145 | was_forced) { | |
1146 | struct mdinfo *sra = sysfs_read(mdfd, NULL, 0); | |
1147 | if (sra) | |
1148 | sysfs_set_str(sra, NULL, | |
1149 | "sync_action", "repair"); | |
1150 | sysfs_free(sra); | |
1151 | } | |
ddc1b11f N |
1152 | return 0; |
1153 | } | |
1154 | pr_err("failed to RUN_ARRAY %s: %s\n", | |
1155 | mddev, strerror(errno)); | |
1156 | ||
1157 | if (!enough(content->array.level, content->array.raid_disks, | |
1158 | content->array.layout, 1, avail)) | |
7a862a02 | 1159 | pr_err("Not enough devices to start the array.\n"); |
ddc1b11f N |
1160 | else if (!enough(content->array.level, |
1161 | content->array.raid_disks, | |
1162 | content->array.layout, clean, | |
1163 | avail)) | |
7a862a02 | 1164 | pr_err("Not enough devices to start the array while not clean - consider --force.\n"); |
ddc1b11f N |
1165 | |
1166 | return 1; | |
1167 | } | |
1168 | if (c->runstop == -1) { | |
1169 | pr_err("%s assembled from %d drive%s", | |
1170 | mddev, okcnt, okcnt==1?"":"s"); | |
1171 | if (okcnt != (unsigned)content->array.raid_disks) | |
1172 | fprintf(stderr, " (out of %d)", content->array.raid_disks); | |
1173 | fprintf(stderr, ", but not started.\n"); | |
1174 | return 2; | |
1175 | } | |
1176 | if (c->verbose >= -1) { | |
1177 | pr_err("%s assembled from %d drive%s", mddev, okcnt, okcnt==1?"":"s"); | |
1178 | if (rebuilding_cnt) | |
aacb2f81 | 1179 | fprintf(stderr, "%s %d rebuilding", sparecnt?",":" and", rebuilding_cnt); |
ddc1b11f N |
1180 | if (sparecnt) |
1181 | fprintf(stderr, " and %d spare%s", sparecnt, sparecnt==1?"":"s"); | |
1182 | if (!enough(content->array.level, content->array.raid_disks, | |
1183 | content->array.layout, 1, avail)) | |
1184 | fprintf(stderr, " - not enough to start the array.\n"); | |
1185 | else if (!enough(content->array.level, | |
1186 | content->array.raid_disks, | |
1187 | content->array.layout, clean, | |
1188 | avail)) | |
7a862a02 | 1189 | fprintf(stderr, " - not enough to start the array while not clean - consider --force.\n"); |
ddc1b11f N |
1190 | else { |
1191 | if (req_cnt == (unsigned)content->array.raid_disks) | |
1192 | fprintf(stderr, " - need all %d to start it", req_cnt); | |
1193 | else | |
aacb2f81 | 1194 | fprintf(stderr, " - need %d to start", req_cnt); |
ddc1b11f N |
1195 | fprintf(stderr, " (use --run to insist).\n"); |
1196 | } | |
1197 | } | |
1198 | return 1; | |
1199 | } | |
1200 | ||
95425a89 N |
1201 | int Assemble(struct supertype *st, char *mddev, |
1202 | struct mddev_ident *ident, | |
1203 | struct mddev_dev *devlist, | |
1204 | struct context *c) | |
1205 | { | |
1206 | /* | |
1207 | * The task of Assemble is to find a collection of | |
1208 | * devices that should (according to their superblocks) | |
1209 | * form an array, and to give this collection to the MD driver. | |
1210 | * In Linux-2.4 and later, this involves submitting a | |
1211 | * SET_ARRAY_INFO ioctl with no arg - to prepare | |
1212 | * the array - and then submit a number of | |
1213 | * ADD_NEW_DISK ioctls to add disks into | |
1214 | * the array. Finally RUN_ARRAY might | |
1215 | * be submitted to start the array. | |
1216 | * | |
1217 | * Much of the work of Assemble is in finding and/or | |
1218 | * checking the disks to make sure they look right. | |
1219 | * | |
1220 | * If mddev is not set, then scan must be set and we | |
1221 | * read through the config file for dev+uuid mapping | |
1222 | * We recurse, setting mddev, for each device that | |
1223 | * - isn't running | |
1224 | * - has a valid uuid (or any uuid if !uuidset) | |
1225 | * | |
1226 | * If mddev is set, we try to determine state of md. | |
1227 | * check version - must be at least 0.90.0 | |
1228 | * check kernel version. must be at least 2.4. | |
1229 | * If not, we can possibly fall back on START_ARRAY | |
1230 | * Try to GET_ARRAY_INFO. | |
1231 | * If possible, give up | |
1232 | * If not, try to STOP_ARRAY just to make sure | |
1233 | * | |
1234 | * If !uuidset and scan, look in conf-file for uuid | |
1235 | * If not found, give up | |
1236 | * If !devlist and scan and uuidset, get list of devs from conf-file | |
1237 | * | |
1238 | * For each device: | |
1239 | * Check superblock - discard if bad | |
1240 | * Check uuid (set if we don't have one) - discard if no match | |
1241 | * Check superblock similarity if we have a superblock - discard if different | |
1242 | * Record events, devicenum | |
1243 | * This should give us a list of devices for the array | |
1244 | * We should collect the most recent event number | |
1245 | * | |
1246 | * Count disks with recent enough event count | |
1247 | * While force && !enough disks | |
1248 | * Choose newest rejected disks, update event count | |
1249 | * mark clean and rewrite superblock | |
1250 | * If recent kernel: | |
1251 | * SET_ARRAY_INFO | |
1252 | * foreach device with recent events : ADD_NEW_DISK | |
1253 | * if runstop == 1 || "enough" disks and runstop==0 -> RUN_ARRAY | |
1254 | * If old kernel: | |
1255 | * Check the device numbers in superblock are right | |
1256 | * update superblock if any changes | |
1257 | * START_ARRAY | |
1258 | * | |
1259 | */ | |
6f4dbdc4 | 1260 | int rv; |
95425a89 N |
1261 | int mdfd; |
1262 | int clean; | |
1263 | int auto_assem = (mddev == NULL && !ident->uuid_set && | |
1264 | ident->super_minor == UnSet && ident->name[0] == 0 | |
1265 | && (ident->container == NULL || ident->member == NULL)); | |
2c355c22 | 1266 | struct devs *devices; |
95425a89 N |
1267 | char *devmap; |
1268 | int *best = NULL; /* indexed by raid_disk */ | |
1269 | int bestcnt = 0; | |
2c355c22 | 1270 | int devcnt; |
aacb2f81 | 1271 | unsigned int okcnt, sparecnt, rebuilding_cnt, replcnt; |
95425a89 | 1272 | int i; |
8cde842b | 1273 | int was_forced = 0; |
95425a89 N |
1274 | int most_recent = 0; |
1275 | int chosen_drive; | |
1276 | int change = 0; | |
1277 | int inargv = 0; | |
95425a89 N |
1278 | int start_partial_ok = (c->runstop >= 0) && |
1279 | (c->force || devlist==NULL || auto_assem); | |
1280 | int num_devs; | |
1281 | struct mddev_dev *tmpdev; | |
1282 | struct mdinfo info; | |
1283 | struct mdinfo *content = NULL; | |
1284 | struct mdinfo *pre_exist = NULL; | |
1285 | char *avail; | |
95425a89 N |
1286 | char *name = NULL; |
1287 | char chosen_name[1024]; | |
1288 | struct map_ent *map = NULL; | |
1289 | struct map_ent *mp; | |
1290 | ||
95425a89 N |
1291 | /* |
1292 | * If any subdevs are listed, then any that don't | |
1293 | * match ident are discarded. Remainder must all match and | |
1294 | * become the array. | |
1295 | * If no subdevs, then we scan all devices in the config file, but | |
1296 | * there must be something in the identity | |
1297 | */ | |
1298 | ||
1299 | if (!devlist && | |
1300 | ident->uuid_set == 0 && | |
1301 | (ident->super_minor < 0 || ident->super_minor == UnSet) && | |
1302 | ident->name[0] == 0 && | |
1303 | (ident->container == NULL || ident->member == NULL) && | |
1304 | ident->devices == NULL) { | |
1305 | pr_err("No identity information available for %s - cannot assemble.\n", | |
1306 | mddev ? mddev : "further assembly"); | |
1307 | return 1; | |
1308 | } | |
1309 | ||
1310 | if (devlist == NULL) | |
1311 | devlist = conf_get_devs(); | |
1312 | else if (mddev) | |
1313 | inargv = 1; | |
1314 | ||
79f9f56d | 1315 | try_again: |
95425a89 N |
1316 | /* We come back here when doing auto-assembly and attempting some |
1317 | * set of devices failed. Those are now marked as ->used==2 and | |
1318 | * we ignore them and try again | |
1319 | */ | |
1320 | if (!st && ident->st) | |
1321 | st = ident->st; | |
1322 | if (c->verbose>0) | |
1323 | pr_err("looking for devices for %s\n", | |
1324 | mddev ? mddev : "further assembly"); | |
1325 | ||
1326 | content = &info; | |
cb8f6859 N |
1327 | if (st) |
1328 | st->ignore_hw_compat = 1; | |
95425a89 N |
1329 | num_devs = select_devices(devlist, ident, &st, &content, c, |
1330 | inargv, auto_assem); | |
1331 | if (num_devs < 0) | |
1332 | return 1; | |
1011e834 | 1333 | |
98dbd966 | 1334 | if (!st || !st->sb || !content) |
c30e5369 N |
1335 | return 2; |
1336 | ||
0431869c N |
1337 | /* We have a full set of devices - we now need to find the |
1338 | * array device. | |
1339 | * However there is a risk that we are racing with "mdadm -I" | |
1340 | * and the array is already partially assembled - we will have | |
1341 | * rejected any devices already in this address. | |
1342 | * So we take a lock on the map file - to prevent further races - | |
1343 | * and look for the uuid in there. If found and the array is | |
1344 | * active, we abort. If found and the array is not active | |
1345 | * we commit to that md device and add all the contained devices | |
1346 | * to our list. We flag them so that we don't try to re-add, | |
1347 | * but can remove if they turn out to not be wanted. | |
1348 | */ | |
1349 | if (map_lock(&map)) | |
1350 | pr_err("failed to get exclusive lock on mapfile - continue anyway...\n"); | |
1351 | mp = map_by_uuid(&map, content->uuid); | |
1352 | if (mp) { | |
1353 | struct mdinfo *dv; | |
1354 | /* array already exists. */ | |
4dd2df09 | 1355 | pre_exist = sysfs_read(-1, mp->devnm, GET_LEVEL|GET_DEVS); |
0431869c N |
1356 | if (pre_exist->array.level != UnSet) { |
1357 | pr_err("Found some drive for an array that is already active: %s\n", | |
1358 | mp->path); | |
1359 | pr_err("giving up.\n"); | |
1360 | return 1; | |
1361 | } | |
1362 | for (dv = pre_exist->devs; dv; dv = dv->next) { | |
1363 | /* We want to add this device to our list, | |
1364 | * but it could already be there if "mdadm -I" | |
1365 | * started *after* we checked for O_EXCL. | |
1366 | * If we add it to the top of the list | |
1367 | * it will be preferred over later copies. | |
1368 | */ | |
1369 | struct mddev_dev *newdev; | |
1370 | char *devname = map_dev(dv->disk.major, | |
1371 | dv->disk.minor, | |
1372 | 0); | |
1373 | if (!devname) | |
1374 | continue; | |
1375 | newdev = xmalloc(sizeof(*newdev)); | |
1376 | newdev->devname = devname; | |
1377 | newdev->disposition = 'I'; | |
1378 | newdev->used = 1; | |
1379 | newdev->next = devlist; | |
1380 | devlist = newdev; | |
1381 | num_devs++; | |
1382 | } | |
1383 | strcpy(chosen_name, mp->path); | |
1384 | if (c->verbose > 0 || mddev == NULL || | |
1385 | strcmp(mddev, chosen_name) != 0) | |
1386 | pr_err("Merging with already-assembled %s\n", | |
1387 | chosen_name); | |
4dd2df09 | 1388 | mdfd = open_dev_excl(mp->devnm); |
0431869c N |
1389 | } else { |
1390 | int trustworthy = FOREIGN; | |
1391 | name = content->name; | |
1392 | switch (st->ss->match_home(st, c->homehost) | |
1393 | ?: st->ss->match_home(st, "any")) { | |
1394 | case 1: | |
1395 | trustworthy = LOCAL; | |
1396 | name = strchr(content->name, ':'); | |
1397 | if (name) | |
1398 | name++; | |
1399 | else | |
1400 | name = content->name; | |
1401 | break; | |
1402 | } | |
1403 | if (!auto_assem) | |
1404 | /* If the array is listed in mdadm.conf or on | |
1405 | * command line, then we trust the name | |
1406 | * even if the array doesn't look local | |
1407 | */ | |
1408 | trustworthy = LOCAL; | |
ac2ecf55 | 1409 | |
0431869c N |
1410 | if (name[0] == 0 && |
1411 | content->array.level == LEVEL_CONTAINER) { | |
1412 | name = content->text_version; | |
1413 | trustworthy = METADATA; | |
1414 | } | |
0ac91628 | 1415 | |
0431869c N |
1416 | if (name[0] && trustworthy != LOCAL && |
1417 | ! c->require_homehost && | |
1418 | conf_name_is_free(name)) | |
1419 | trustworthy = LOCAL; | |
0ac91628 | 1420 | |
0431869c N |
1421 | if (trustworthy == LOCAL && |
1422 | strchr(name, ':')) | |
1423 | /* Ignore 'host:' prefix of name */ | |
1424 | name = strchr(name, ':')+1; | |
7cdc0872 | 1425 | |
0431869c N |
1426 | mdfd = create_mddev(mddev, name, ident->autof, trustworthy, |
1427 | chosen_name); | |
1428 | } | |
c30e5369 N |
1429 | if (mdfd < 0) { |
1430 | st->ss->free_super(st); | |
c30e5369 | 1431 | if (auto_assem) |
60e1bc1a | 1432 | goto try_again; |
c30e5369 N |
1433 | return 1; |
1434 | } | |
a04d5763 | 1435 | mddev = chosen_name; |
6f4dbdc4 N |
1436 | if (get_linux_version() < 2004000 || |
1437 | md_get_version(mdfd) < 9000) { | |
1438 | pr_err("Assemble requires Linux 2.4 or later, and\n" | |
79f9f56d N |
1439 | " md driver version 0.90.0 or later.\n" |
1440 | " Upgrade your kernel or try --build\n"); | |
c30e5369 N |
1441 | close(mdfd); |
1442 | return 1; | |
1443 | } | |
0431869c | 1444 | if (pre_exist == NULL) { |
4dd2df09 | 1445 | if (mddev_busy(fd2devnm(mdfd))) { |
0431869c N |
1446 | pr_err("%s already active, cannot restart it!\n", |
1447 | mddev); | |
1448 | for (tmpdev = devlist ; | |
1449 | tmpdev && tmpdev->used != 1; | |
1450 | tmpdev = tmpdev->next) | |
1451 | ; | |
1452 | if (tmpdev && auto_assem) | |
1453 | pr_err("%s needed for %s...\n", | |
1454 | mddev, tmpdev->devname); | |
1455 | close(mdfd); | |
1456 | mdfd = -3; | |
1457 | st->ss->free_super(st); | |
1458 | if (auto_assem) | |
1459 | goto try_again; | |
1460 | return 1; | |
1461 | } | |
1462 | /* just incase it was started but has no content */ | |
1463 | ioctl(mdfd, STOP_ARRAY, NULL); | |
8a46fe84 NB |
1464 | } |
1465 | ||
9008ed1c N |
1466 | #ifndef MDASSEMBLE |
1467 | if (content != &info) { | |
1468 | /* This is a member of a container. Try starting the array. */ | |
588bebfc | 1469 | int err; |
11b6d91d | 1470 | err = assemble_container_content(st, mdfd, content, c, |
9ca39acb | 1471 | chosen_name, NULL); |
588bebfc | 1472 | close(mdfd); |
588bebfc | 1473 | return err; |
9008ed1c N |
1474 | } |
1475 | #endif | |
811e6cbe | 1476 | /* Ok, no bad inconsistancy, we can try updating etc */ |
503975b9 N |
1477 | devices = xcalloc(num_devs, sizeof(*devices)); |
1478 | devmap = xcalloc(num_devs, content->array.raid_disks); | |
df842e69 | 1479 | devcnt = load_devices(devices, devmap, ident, &st, devlist, |
2c355c22 N |
1480 | c, content, mdfd, mddev, |
1481 | &most_recent, &bestcnt, &best, inargv); | |
1482 | if (devcnt < 0) | |
1483 | return 1; | |
4b1ac34b | 1484 | |
64c4757e | 1485 | if (devcnt == 0) { |
e7b84f9d | 1486 | pr_err("no devices found for %s\n", |
79f9f56d | 1487 | mddev); |
3d2b16e7 NB |
1488 | if (st) |
1489 | st->ss->free_super(st); | |
7f91af49 | 1490 | close(mdfd); |
d7f7ebb7 | 1491 | free(devices); |
02e7c5b7 | 1492 | free(devmap); |
64c4757e NB |
1493 | return 1; |
1494 | } | |
4b1ac34b | 1495 | |
4977146a | 1496 | if (c->update && strcmp(c->update, "byteorder")==0) |
3d2b16e7 NB |
1497 | st->minor_version = 90; |
1498 | ||
a5d85af7 | 1499 | st->ss->getinfo_super(st, content, NULL); |
98dbd966 | 1500 | clean = content->array.state & 1; |
4b1ac34b | 1501 | |
64c4757e NB |
1502 | /* now we have some devices that might be suitable. |
1503 | * I wonder how many | |
1504 | */ | |
503975b9 | 1505 | avail = xcalloc(content->array.raid_disks, 1); |
64c4757e | 1506 | okcnt = 0; |
aacb2f81 | 1507 | replcnt = 0; |
52826846 | 1508 | sparecnt=0; |
1ff98339 | 1509 | rebuilding_cnt=0; |
f21e18ca | 1510 | for (i=0; i< bestcnt; i++) { |
64c4757e | 1511 | int j = best[i]; |
ee04451c NB |
1512 | int event_margin = 1; /* always allow a difference of '1' |
1513 | * like the kernel does | |
1514 | */ | |
64c4757e | 1515 | if (j < 0) continue; |
d013a55e NB |
1516 | /* note: we ignore error flags in multipath arrays |
1517 | * as they don't make sense | |
1518 | */ | |
df0d4ea0 | 1519 | if (content->array.level != LEVEL_MULTIPATH) |
f22385f9 | 1520 | if (!(devices[j].i.disk.state & (1<<MD_DISK_ACTIVE))) { |
213ee40b | 1521 | if (!(devices[j].i.disk.state |
ed7fc6b4 AC |
1522 | & (1<<MD_DISK_FAULTY))) { |
1523 | devices[j].uptodate = 1; | |
aa88f531 | 1524 | sparecnt++; |
ed7fc6b4 | 1525 | } |
d013a55e | 1526 | continue; |
aa88f531 | 1527 | } |
de5a472e | 1528 | /* If this device thinks that 'most_recent' has failed, then |
02e7c5b7 N |
1529 | * we must reject this device. |
1530 | */ | |
eb20ecf1 | 1531 | if (j != most_recent && !c->force && |
02e7c5b7 N |
1532 | content->array.raid_disks > 0 && |
1533 | devices[most_recent].i.disk.raid_disk >= 0 && | |
1534 | devmap[j * content->array.raid_disks + devices[most_recent].i.disk.raid_disk] == 0) { | |
4977146a | 1535 | if (c->verbose > -1) |
e7b84f9d | 1536 | pr_err("ignoring %s as it reports %s as failed\n", |
79f9f56d | 1537 | devices[j].devname, devices[most_recent].devname); |
02e7c5b7 N |
1538 | best[i] = -1; |
1539 | continue; | |
1540 | } | |
f80057ae N |
1541 | /* Require event counter to be same as, or just less than, |
1542 | * most recent. If it is bigger, it must be a stray spare and | |
1543 | * should be ignored. | |
1544 | */ | |
213ee40b | 1545 | if (devices[j].i.events+event_margin >= |
f80057ae N |
1546 | devices[most_recent].i.events && |
1547 | devices[j].i.events <= | |
1548 | devices[most_recent].i.events | |
1549 | ) { | |
64c4757e | 1550 | devices[j].uptodate = 1; |
aacb2f81 | 1551 | if (i < content->array.raid_disks * 2) { |
dcc4210f DW |
1552 | if (devices[j].i.recovery_start == MaxSector || |
1553 | (content->reshape_active && | |
d316dba7 | 1554 | i >= content->array.raid_disks - content->delta_disks)) { |
aacb2f81 N |
1555 | if (!avail[i/2]) { |
1556 | okcnt++; | |
1557 | avail[i/2]=1; | |
1558 | } else | |
1559 | replcnt++; | |
1ff98339 N |
1560 | } else |
1561 | rebuilding_cnt++; | |
265e0f17 | 1562 | } else |
52826846 | 1563 | sparecnt++; |
64c4757e NB |
1564 | } |
1565 | } | |
02e7c5b7 | 1566 | free(devmap); |
8cde842b N |
1567 | if (c->force) { |
1568 | int force_ok = force_array(content, devices, best, bestcnt, | |
1569 | avail, most_recent, st, c); | |
1570 | okcnt += force_ok; | |
1571 | if (force_ok) | |
1572 | was_forced = 1; | |
1573 | } | |
52826846 NB |
1574 | /* Now we want to look at the superblock which the kernel will base things on |
1575 | * and compare the devices that we think are working with the devices that the | |
1576 | * superblock thinks are working. | |
1577 | * If there are differences and --force is given, then update this chosen | |
1578 | * superblock. | |
1579 | */ | |
cd29a5c8 | 1580 | chosen_drive = -1; |
3da92f27 | 1581 | st->ss->free_super(st); |
f81a2b56 | 1582 | for (i=0; chosen_drive < 0 && i<bestcnt; i+=2) { |
52826846 NB |
1583 | int j = best[i]; |
1584 | int fd; | |
4b1ac34b | 1585 | |
52826846 NB |
1586 | if (j<0) |
1587 | continue; | |
1588 | if (!devices[j].uptodate) | |
1589 | continue; | |
a28232b8 N |
1590 | if (devices[j].i.events < devices[most_recent].i.events) |
1591 | continue; | |
52826846 | 1592 | chosen_drive = j; |
0431869c N |
1593 | if ((fd=dev_open(devices[j].devname, |
1594 | devices[j].included ? O_RDONLY | |
1595 | : (O_RDONLY|O_EXCL)))< 0) { | |
e7b84f9d | 1596 | pr_err("Cannot open %s: %s\n", |
79f9f56d | 1597 | devices[j].devname, strerror(errno)); |
7f91af49 | 1598 | close(mdfd); |
d7f7ebb7 | 1599 | free(devices); |
52826846 NB |
1600 | return 1; |
1601 | } | |
3da92f27 | 1602 | if (st->ss->load_super(st,fd, NULL)) { |
52826846 | 1603 | close(fd); |
e7b84f9d | 1604 | pr_err("RAID superblock has disappeared from %s\n", |
79f9f56d | 1605 | devices[j].devname); |
7f91af49 | 1606 | close(mdfd); |
d7f7ebb7 | 1607 | free(devices); |
52826846 NB |
1608 | return 1; |
1609 | } | |
1610 | close(fd); | |
1611 | } | |
3da92f27 | 1612 | if (st->sb == NULL) { |
e7b84f9d | 1613 | pr_err("No suitable drives found for %s\n", mddev); |
7f91af49 | 1614 | close(mdfd); |
d7f7ebb7 | 1615 | free(devices); |
4b1ac34b NB |
1616 | return 1; |
1617 | } | |
a5d85af7 | 1618 | st->ss->getinfo_super(st, content, NULL); |
f35f2525 | 1619 | #ifndef MDASSEMBLE |
4dd2df09 | 1620 | sysfs_init(content, mdfd, NULL); |
f35f2525 | 1621 | #endif |
56eedc1a | 1622 | for (i=0; i<bestcnt; i++) { |
52826846 | 1623 | int j = best[i]; |
98c6faba | 1624 | unsigned int desired_state; |
11a3e71d | 1625 | |
aacb2f81 | 1626 | if (i >= content->array.raid_disks * 2) |
11a3e71d | 1627 | desired_state = 0; |
aacb2f81 N |
1628 | else if (i & 1) |
1629 | desired_state = (1<<MD_DISK_ACTIVE) | (1<<MD_DISK_REPLACEMENT); | |
1630 | else | |
1631 | desired_state = (1<<MD_DISK_ACTIVE) | (1<<MD_DISK_SYNC); | |
11a3e71d | 1632 | |
52826846 NB |
1633 | if (j<0) |
1634 | continue; | |
1635 | if (!devices[j].uptodate) | |
1636 | continue; | |
4b1ac34b | 1637 | |
213ee40b | 1638 | devices[j].i.disk.state = desired_state; |
4e9a6ff7 N |
1639 | if (!(devices[j].i.array.state & 1)) |
1640 | clean = 0; | |
213ee40b NB |
1641 | |
1642 | if (st->ss->update_super(st, &devices[j].i, "assemble", NULL, | |
4977146a N |
1643 | c->verbose, 0, NULL)) { |
1644 | if (c->force) { | |
1645 | if (c->verbose >= 0) | |
e7b84f9d | 1646 | pr_err("clearing FAULTY flag for device %d in %s for %s\n", |
79f9f56d | 1647 | j, mddev, devices[j].devname); |
4b1ac34b | 1648 | change = 1; |
52826846 | 1649 | } else { |
4977146a | 1650 | if (c->verbose >= -1) |
e7b84f9d | 1651 | pr_err("device %d in %s has wrong state in superblock, but %s seems ok\n", |
79f9f56d | 1652 | i, mddev, devices[j].devname); |
52826846 NB |
1653 | } |
1654 | } | |
4b1ac34b | 1655 | #if 0 |
213ee40b | 1656 | if (!(super.disks[i].i.disk.state & (1 << MD_DISK_FAULTY))) { |
e7b84f9d | 1657 | pr_err("devices %d of %s is not marked FAULTY in superblock, but cannot be found\n", |
79f9f56d | 1658 | i, mddev); |
52826846 | 1659 | } |
4b1ac34b | 1660 | #endif |
52826846 | 1661 | } |
4977146a | 1662 | if (c->force && !clean && |
98dbd966 DW |
1663 | !enough(content->array.level, content->array.raid_disks, |
1664 | content->array.layout, clean, | |
de5a472e | 1665 | avail)) { |
98dbd966 | 1666 | change += st->ss->update_super(st, content, "force-array", |
6f4dbdc4 | 1667 | devices[chosen_drive].devname, c->verbose, |
67a8c82d | 1668 | 0, NULL); |
8cde842b | 1669 | was_forced = 1; |
583315d9 | 1670 | clean = 1; |
d013a55e | 1671 | } |
52826846 | 1672 | |
4b1ac34b | 1673 | if (change) { |
52826846 | 1674 | int fd; |
0431869c N |
1675 | fd = dev_open(devices[chosen_drive].devname, |
1676 | devices[chosen_drive].included ? | |
1677 | O_RDWR : (O_RDWR|O_EXCL)); | |
52826846 | 1678 | if (fd < 0) { |
e7b84f9d | 1679 | pr_err("Could not open %s for write - cannot Assemble array.\n", |
79f9f56d | 1680 | devices[chosen_drive].devname); |
7f91af49 | 1681 | close(mdfd); |
d7f7ebb7 | 1682 | free(devices); |
52826846 NB |
1683 | return 1; |
1684 | } | |
3da92f27 | 1685 | if (st->ss->store_super(st, fd)) { |
52826846 | 1686 | close(fd); |
e7b84f9d | 1687 | pr_err("Could not re-write superblock on %s\n", |
79f9f56d | 1688 | devices[chosen_drive].devname); |
7f91af49 | 1689 | close(mdfd); |
d7f7ebb7 | 1690 | free(devices); |
52826846 NB |
1691 | return 1; |
1692 | } | |
4977146a | 1693 | if (c->verbose >= 0) |
e7b84f9d | 1694 | pr_err("Marking array %s as 'clean'\n", |
79f9f56d | 1695 | mddev); |
52826846 | 1696 | close(fd); |
52826846 NB |
1697 | } |
1698 | ||
353632d9 NB |
1699 | /* If we are in the middle of a reshape we may need to restore saved data |
1700 | * that was moved aside due to the reshape overwriting live data | |
1701 | * The code of doing this lives in Grow.c | |
1702 | */ | |
39c5a909 | 1703 | #ifndef MDASSEMBLE |
5e88ab2e N |
1704 | if (content->reshape_active && |
1705 | !(content->reshape_active & RESHAPE_NO_BACKUP)) { | |
353632d9 | 1706 | int err = 0; |
503975b9 | 1707 | int *fdlist = xmalloc(sizeof(int)* bestcnt); |
4977146a | 1708 | if (c->verbose > 0) |
c34fef77 | 1709 | pr_err("%s has an active reshape - checking if critical section needs to be restored\n", |
79f9f56d | 1710 | chosen_name); |
54ded86f N |
1711 | if (!c->backup_file) |
1712 | c->backup_file = locate_backup(content->sys_name); | |
a7dec3fd | 1713 | enable_fds(bestcnt/2); |
5e9fd96f N |
1714 | for (i = 0; i < bestcnt/2; i++) { |
1715 | int j = best[i*2]; | |
353632d9 | 1716 | if (j >= 0) { |
0431869c N |
1717 | fdlist[i] = dev_open(devices[j].devname, |
1718 | devices[j].included | |
1719 | ? O_RDWR : (O_RDWR|O_EXCL)); | |
353632d9 | 1720 | if (fdlist[i] < 0) { |
e7b84f9d | 1721 | pr_err("Could not open %s for write - cannot Assemble array.\n", |
79f9f56d | 1722 | devices[j].devname); |
353632d9 NB |
1723 | err = 1; |
1724 | break; | |
1725 | } | |
1726 | } else | |
1727 | fdlist[i] = -1; | |
1728 | } | |
87f26d14 | 1729 | if (!err) { |
ba53ea59 AK |
1730 | if (st->ss->external && st->ss->recover_backup) |
1731 | err = st->ss->recover_backup(st, content); | |
1732 | else | |
5e9fd96f | 1733 | err = Grow_restart(st, content, fdlist, bestcnt/2, |
4977146a N |
1734 | c->backup_file, c->verbose > 0); |
1735 | if (err && c->invalid_backup) { | |
1736 | if (c->verbose > 0) | |
7a862a02 | 1737 | pr_err("continuing without restoring backup\n"); |
87f26d14 N |
1738 | err = 0; |
1739 | } | |
1740 | } | |
353632d9 NB |
1741 | while (i>0) { |
1742 | i--; | |
1743 | if (fdlist[i]>=0) close(fdlist[i]); | |
1744 | } | |
56dcaa6b | 1745 | free(fdlist); |
353632d9 | 1746 | if (err) { |
e7b84f9d | 1747 | pr_err("Failed to restore critical section for reshape, sorry.\n"); |
4977146a | 1748 | if (c->backup_file == NULL) |
e7b84f9d | 1749 | cont_err("Possibly you needed to specify the --backup-file\n"); |
7f91af49 | 1750 | close(mdfd); |
d7f7ebb7 | 1751 | free(devices); |
353632d9 NB |
1752 | return err; |
1753 | } | |
1754 | } | |
39c5a909 | 1755 | #endif |
aa88f531 | 1756 | |
64c4757e | 1757 | /* Almost ready to actually *do* something */ |
6f4dbdc4 N |
1758 | /* First, fill in the map, so that udev can find our name |
1759 | * as soon as we become active. | |
1760 | */ | |
afa368f4 N |
1761 | if (c->update && strcmp(c->update, "metadata")==0) { |
1762 | content->array.major_version = 1; | |
1763 | content->array.minor_version = 0; | |
1764 | strcpy(content->text_version, "1.0"); | |
1765 | } | |
1766 | ||
4dd2df09 | 1767 | map_update(&map, fd2devnm(mdfd), content->text_version, |
6f4dbdc4 N |
1768 | content->uuid, chosen_name); |
1769 | ||
1770 | rv = start_array(mdfd, mddev, content, | |
1771 | st, ident, best, bestcnt, | |
1772 | chosen_drive, devices, okcnt, sparecnt, | |
1773 | rebuilding_cnt, | |
1774 | c, | |
71417de6 N |
1775 | clean, avail, start_partial_ok, |
1776 | pre_exist != NULL, | |
1777 | was_forced); | |
6f4dbdc4 N |
1778 | if (rv == 1 && !pre_exist) |
1779 | ioctl(mdfd, STOP_ARRAY, NULL); | |
6f4dbdc4 N |
1780 | free(devices); |
1781 | map_unlock(&map); | |
1782 | if (rv == 0) { | |
1783 | wait_for(chosen_name, mdfd); | |
b20c8a50 | 1784 | close(mdfd); |
6f4dbdc4 N |
1785 | if (auto_assem) { |
1786 | int usecs = 1; | |
1787 | /* There is a nasty race with 'mdadm --monitor'. | |
1788 | * If it opens this device before we close it, | |
1789 | * it gets an incomplete open on which IO | |
1790 | * doesn't work and the capacity is | |
1791 | * wrong. | |
1792 | * If we reopen (to check for layered devices) | |
1793 | * before --monitor closes, we loose. | |
1794 | * | |
1795 | * So: wait upto 1 second for there to be | |
1796 | * a non-zero capacity. | |
1797 | */ | |
1798 | while (usecs < 1000) { | |
1799 | mdfd = open(mddev, O_RDONLY); | |
1800 | if (mdfd >= 0) { | |
1801 | unsigned long long size; | |
1802 | if (get_dev_size(mdfd, NULL, &size) && | |
1803 | size > 0) | |
1804 | break; | |
1805 | close(mdfd); | |
589395d6 | 1806 | } |
6f4dbdc4 N |
1807 | usleep(usecs); |
1808 | usecs <<= 1; | |
dab6685f | 1809 | } |
aa88f531 | 1810 | } |
b20c8a50 N |
1811 | } else |
1812 | close(mdfd); | |
1813 | ||
6f4dbdc4 N |
1814 | /* '2' means 'OK, but not started yet' */ |
1815 | return rv == 2 ? 0 : rv; | |
64c4757e | 1816 | } |
6234c63c DW |
1817 | |
1818 | #ifndef MDASSEMBLE | |
1819 | int assemble_container_content(struct supertype *st, int mdfd, | |
11b6d91d | 1820 | struct mdinfo *content, struct context *c, |
9ca39acb | 1821 | char *chosen_name, int *result) |
6234c63c | 1822 | { |
02b70e83 | 1823 | struct mdinfo *dev, *sra, *dev2; |
6234c63c | 1824 | int working = 0, preexist = 0; |
882029c8 | 1825 | int expansion = 0; |
6234c63c | 1826 | struct map_ent *map = NULL; |
7af03341 | 1827 | int old_raid_disks; |
4aecb54a | 1828 | int start_reshape; |
c1736844 N |
1829 | char *avail = NULL; |
1830 | int err; | |
6234c63c | 1831 | |
4dd2df09 | 1832 | sysfs_init(content, mdfd, NULL); |
6234c63c | 1833 | |
02b70e83 | 1834 | sra = sysfs_read(mdfd, NULL, GET_VERSION|GET_DEVS); |
0ea8f5b1 N |
1835 | if (sra == NULL || strcmp(sra->text_version, content->text_version) != 0) { |
1836 | if (content->array.major_version == -1 && | |
1837 | content->array.minor_version == -2 && | |
11b6d91d | 1838 | c->readonly && |
0ea8f5b1 N |
1839 | content->text_version[0] == '/') |
1840 | content->text_version[0] = '-'; | |
22472ee1 JS |
1841 | if (sysfs_set_array(content, md_get_version(mdfd)) != 0) { |
1842 | if (sra) | |
1843 | sysfs_free(sra); | |
6234c63c | 1844 | return 1; |
22472ee1 | 1845 | } |
0ea8f5b1 | 1846 | } |
588bebfc | 1847 | |
4aecb54a AK |
1848 | /* There are two types of reshape: container wide or sub-array specific |
1849 | * Check if metadata requests blocking container wide reshapes | |
1850 | */ | |
1851 | start_reshape = (content->reshape_active && | |
79f9f56d N |
1852 | !((content->reshape_active == CONTAINER_RESHAPE) && |
1853 | (content->array.state & (1<<MD_SB_BLOCK_CONTAINER_RESHAPE)))); | |
4aecb54a AK |
1854 | |
1855 | /* Block subarray here if it is under reshape now | |
1856 | * Do not allow for any changes in this array | |
1857 | */ | |
1858 | if (st->ss->external && content->recovery_blocked && start_reshape) | |
b8063f07 AK |
1859 | block_subarray(content); |
1860 | ||
02b70e83 N |
1861 | for (dev2 = sra->devs; dev2; dev2 = dev2->next) { |
1862 | for (dev = content->devs; dev; dev = dev->next) | |
1863 | if (dev2->disk.major == dev->disk.major && | |
1864 | dev2->disk.minor == dev->disk.minor) | |
1865 | break; | |
1866 | if (dev) | |
1867 | continue; | |
1868 | /* Don't want this one any more */ | |
1869 | if (sysfs_set_str(sra, dev2, "slot", "none") < 0 && | |
1870 | errno == EBUSY) { | |
1871 | pr_err("Cannot remove old device %s: not updating %s\n", dev2->sys_name, sra->sys_name); | |
1872 | sysfs_free(sra); | |
1873 | return 1; | |
1874 | } | |
1875 | sysfs_set_str(sra, dev2, "state", "remove"); | |
1876 | } | |
7af03341 | 1877 | old_raid_disks = content->array.raid_disks - content->delta_disks; |
c1736844 N |
1878 | avail = xcalloc(content->array.raid_disks, 1); |
1879 | for (dev = content->devs; dev; dev = dev->next) { | |
1880 | if (dev->disk.raid_disk >= 0) | |
1881 | avail[dev->disk.raid_disk] = 1; | |
14032016 | 1882 | if (sysfs_add_disk(content, dev, 1) == 0) { |
7af03341 | 1883 | if (dev->disk.raid_disk >= old_raid_disks && |
14032016 AK |
1884 | content->reshape_active) |
1885 | expansion++; | |
1886 | else | |
1887 | working++; | |
1888 | } else if (errno == EEXIST) | |
6234c63c | 1889 | preexist++; |
c1736844 | 1890 | } |
02b70e83 | 1891 | sysfs_free(sra); |
c1736844 N |
1892 | if (working + expansion == 0 && c->runstop <= 0) { |
1893 | free(avail); | |
7cb2aa33 | 1894 | return 1;/* Nothing new, don't try to start */ |
c1736844 | 1895 | } |
4dd2df09 | 1896 | map_update(&map, fd2devnm(mdfd), |
8b4e5ea9 N |
1897 | content->text_version, |
1898 | content->uuid, chosen_name); | |
1899 | ||
4aecb54a | 1900 | |
c1736844 N |
1901 | if (enough(content->array.level, content->array.raid_disks, |
1902 | content->array.layout, content->array.state & 1, avail) == 0) { | |
9ca39acb N |
1903 | if (c->export && result) |
1904 | *result |= INCR_NO; | |
1905 | else if (c->verbose >= 0) { | |
c1736844 N |
1906 | pr_err("%s assembled with %d device%s", |
1907 | chosen_name, preexist + working, | |
1908 | preexist + working == 1 ? "":"s"); | |
6234c63c DW |
1909 | if (preexist) |
1910 | fprintf(stderr, " (%d new)", working); | |
c1736844 | 1911 | fprintf(stderr, " but not started\n"); |
6234c63c | 1912 | } |
c1736844 N |
1913 | free(avail); |
1914 | return 1; | |
1915 | } | |
1916 | free(avail); | |
1917 | ||
1918 | if (c->runstop <= 0 && | |
1919 | (working + preexist + expansion) < | |
1920 | content->array.working_disks) { | |
9ca39acb N |
1921 | if (c->export && result) |
1922 | *result |= INCR_UNSAFE; | |
1923 | else if (c->verbose >= 0) { | |
e7b84f9d N |
1924 | pr_err("%s assembled with %d device%s", |
1925 | chosen_name, preexist + working, | |
1926 | preexist + working == 1 ? "":"s"); | |
88716263 N |
1927 | if (preexist) |
1928 | fprintf(stderr, " (%d new)", working); | |
c1736844 | 1929 | fprintf(stderr, " but not safe to start\n"); |
88716263 | 1930 | } |
7cb2aa33 N |
1931 | return 1; |
1932 | } | |
c1736844 N |
1933 | |
1934 | ||
1935 | if (start_reshape) { | |
1936 | int spare = content->array.raid_disks + expansion; | |
1937 | if (restore_backup(st, content, | |
1938 | working, | |
54ded86f | 1939 | spare, &c->backup_file, c->verbose) == 1) |
c1736844 N |
1940 | return 1; |
1941 | ||
1942 | err = sysfs_set_str(content, NULL, | |
1943 | "array_state", "readonly"); | |
1944 | if (err) | |
1945 | return 1; | |
1946 | ||
1947 | if (st->ss->external) { | |
1948 | if (!mdmon_running(st->container_devnm)) | |
1949 | start_mdmon(st->container_devnm); | |
1950 | ping_monitor(st->container_devnm); | |
1951 | if (mdmon_running(st->container_devnm) && | |
1952 | st->update_tail == NULL) | |
1953 | st->update_tail = &st->updates; | |
1954 | } | |
1955 | ||
1956 | err = Grow_continue(mdfd, st, content, c->backup_file, | |
06e293d0 | 1957 | 0, c->freeze_reshape); |
c1736844 N |
1958 | } else switch(content->array.level) { |
1959 | case LEVEL_LINEAR: | |
1960 | case LEVEL_MULTIPATH: | |
1961 | case 0: | |
1962 | err = sysfs_set_str(content, NULL, "array_state", | |
1963 | c->readonly ? "readonly" : "active"); | |
1964 | break; | |
1965 | default: | |
1966 | err = sysfs_set_str(content, NULL, "array_state", | |
1967 | "readonly"); | |
1968 | /* start mdmon if needed. */ | |
1969 | if (!err) { | |
1970 | if (!mdmon_running(st->container_devnm)) | |
1971 | start_mdmon(st->container_devnm); | |
1972 | ping_monitor(st->container_devnm); | |
1973 | } | |
1974 | break; | |
1975 | } | |
1976 | if (!err) | |
1977 | sysfs_set_safemode(content, content->safe_mode_delay); | |
1978 | ||
1979 | /* Block subarray here if it is not reshaped now | |
1980 | * It has be blocked a little later to allow mdmon to switch in | |
1981 | * in to R/W state | |
1982 | */ | |
1983 | if (st->ss->external && content->recovery_blocked && | |
1984 | !start_reshape) | |
1985 | block_subarray(content); | |
1986 | ||
9ca39acb N |
1987 | if (c->export && result) { |
1988 | if (err) | |
1989 | *result |= INCR_NO; | |
1990 | else | |
1991 | *result |= INCR_YES; | |
1992 | } else if (c->verbose >= 0) { | |
c1736844 N |
1993 | if (err) |
1994 | pr_err("array %s now has %d device%s", | |
1995 | chosen_name, working + preexist, | |
1996 | working + preexist == 1 ? "":"s"); | |
1997 | else | |
1998 | pr_err("Started %s with %d device%s", | |
1999 | chosen_name, working + preexist, | |
2000 | working + preexist == 1 ? "":"s"); | |
2001 | if (preexist) | |
2002 | fprintf(stderr, " (%d new)", working); | |
2003 | if (expansion) | |
2004 | fprintf(stderr, " ( + %d for expansion)", | |
2005 | expansion); | |
2006 | fprintf(stderr, "\n"); | |
2007 | } | |
2008 | if (!err) | |
2009 | wait_for(chosen_name, mdfd); | |
2010 | return err; | |
2011 | /* FIXME should have an O_EXCL and wait for read-auto */ | |
6234c63c DW |
2012 | } |
2013 | #endif |