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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 | * |
c61b1c0b | 4 | * Copyright (C) 2001-2016 Neil Brown <neilb@suse.com> |
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 | |
86b77ddf | 28 | static int name_matches(char *found, char *required, char *homehost, int require_homehost) |
624920bb NB |
29 | { |
30 | /* See if the name found matches the required name, possibly | |
31 | * prefixed with 'homehost' | |
32 | */ | |
00f23a88 N |
33 | char *sep; |
34 | unsigned int l; | |
624920bb | 35 | |
624920bb NB |
36 | if (strcmp(found, required)==0) |
37 | return 1; | |
00f23a88 N |
38 | sep = strchr(found, ':'); |
39 | if (!sep) | |
40 | return 0; | |
41 | l = sep - found; | |
42 | if (strncmp(found, "any:", 4) == 0 || | |
43 | (homehost && strcmp(homehost, "any") == 0) || | |
86b77ddf | 44 | !require_homehost || |
00f23a88 N |
45 | (homehost && strlen(homehost) == l && |
46 | strncmp(found, homehost, l) == 0)) { | |
47 | /* matching homehost */ | |
48 | if (strcmp(sep+1, required) == 0) | |
624920bb NB |
49 | return 1; |
50 | } | |
51 | return 0; | |
52 | } | |
53 | ||
9008ed1c | 54 | static int is_member_busy(char *metadata_version) |
2de8884f DW |
55 | { |
56 | /* check if the given member array is active */ | |
b4924f46 | 57 | struct mdstat_ent *mdstat = mdstat_read(0, 0); |
2de8884f DW |
58 | struct mdstat_ent *ent; |
59 | int busy = 0; | |
60 | ||
61 | for (ent = mdstat; ent; ent = ent->next) { | |
62 | if (ent->metadata_version == NULL) | |
63 | continue; | |
64 | if (strncmp(ent->metadata_version, "external:", 9) != 0) | |
65 | continue; | |
66 | if (!is_subarray(&ent->metadata_version[9])) | |
67 | continue; | |
68 | /* Skip first char - it can be '/' or '-' */ | |
69 | if (strcmp(&ent->metadata_version[10], metadata_version+1) == 0) { | |
70 | busy = 1; | |
71 | break; | |
72 | } | |
73 | } | |
74 | free_mdstat(mdstat); | |
75 | ||
76 | return busy; | |
77 | } | |
78 | ||
fa56eddb | 79 | static int ident_matches(struct mddev_ident *ident, |
08fb91a3 N |
80 | struct mdinfo *content, |
81 | struct supertype *tst, | |
86b77ddf | 82 | char *homehost, int require_homehost, |
08fb91a3 N |
83 | char *update, char *devname) |
84 | { | |
85 | ||
86 | if (ident->uuid_set && (!update || strcmp(update, "uuid")!= 0) && | |
cbeeb0e5 AC |
87 | same_uuid(content->uuid, ident->uuid, tst->ss->swapuuid)==0 && |
88 | memcmp(content->uuid, uuid_zero, sizeof(int[4])) != 0) { | |
08fb91a3 | 89 | if (devname) |
e7b84f9d | 90 | pr_err("%s has wrong uuid.\n", devname); |
08fb91a3 N |
91 | return 0; |
92 | } | |
93 | if (ident->name[0] && (!update || strcmp(update, "name")!= 0) && | |
86b77ddf | 94 | name_matches(content->name, ident->name, homehost, require_homehost)==0) { |
08fb91a3 | 95 | if (devname) |
e7b84f9d | 96 | pr_err("%s has wrong name.\n", devname); |
08fb91a3 N |
97 | return 0; |
98 | } | |
99 | if (ident->super_minor != UnSet && | |
100 | ident->super_minor != content->array.md_minor) { | |
101 | if (devname) | |
e7b84f9d N |
102 | pr_err("%s has wrong super-minor.\n", |
103 | devname); | |
08fb91a3 N |
104 | return 0; |
105 | } | |
106 | if (ident->level != UnSet && | |
107 | ident->level != content->array.level) { | |
108 | if (devname) | |
e7b84f9d N |
109 | pr_err("%s has wrong raid level.\n", |
110 | devname); | |
08fb91a3 N |
111 | return 0; |
112 | } | |
113 | if (ident->raid_disks != UnSet && | |
babb8dd4 | 114 | content->array.raid_disks != 0 && /* metadata doesn't know how many to expect */ |
08fb91a3 N |
115 | ident->raid_disks!= content->array.raid_disks) { |
116 | if (devname) | |
e7b84f9d N |
117 | pr_err("%s requires wrong number of drives.\n", |
118 | devname); | |
08fb91a3 N |
119 | return 0; |
120 | } | |
805d30b2 N |
121 | if (ident->member && ident->member[0]) { |
122 | /* content->text_version must match */ | |
123 | char *s = strchr(content->text_version+1, '/'); | |
124 | if (s == NULL) { | |
125 | if (devname) | |
e7b84f9d N |
126 | pr_err("%s is not a container and one is required.\n", |
127 | devname); | |
805d30b2 N |
128 | return 0; |
129 | } else if (strcmp(ident->member, s+1) != 0) { | |
130 | if (devname) | |
e7b84f9d N |
131 | pr_err("skipping wrong member %s is %s\n", |
132 | content->text_version, devname); | |
805d30b2 N |
133 | return 0; |
134 | } | |
135 | } | |
08fb91a3 N |
136 | return 1; |
137 | } | |
08fb91a3 | 138 | |
95425a89 N |
139 | static int select_devices(struct mddev_dev *devlist, |
140 | struct mddev_ident *ident, | |
141 | struct supertype **stp, | |
142 | struct mdinfo **contentp, | |
143 | struct context *c, | |
144 | int inargv, int auto_assem) | |
64c4757e | 145 | { |
a655e550 | 146 | struct mddev_dev *tmpdev; |
95425a89 N |
147 | int num_devs; |
148 | struct supertype *st = *stp; | |
98dbd966 | 149 | struct mdinfo *content = NULL; |
8cf2eb96 | 150 | int report_mismatch = ((inargv && c->verbose >= 0) || c->verbose > 0); |
cbeeb0e5 | 151 | struct domainlist *domains = NULL; |
0a6bff09 | 152 | dev_t rdev; |
60e1bc1a | 153 | |
5787fa49 NB |
154 | tmpdev = devlist; num_devs = 0; |
155 | while (tmpdev) { | |
da6b5ca9 NB |
156 | if (tmpdev->used) |
157 | tmpdev->used = 2; | |
158 | else | |
159 | num_devs++; | |
0431869c | 160 | tmpdev->disposition = 0; |
5787fa49 NB |
161 | tmpdev = tmpdev->next; |
162 | } | |
5787fa49 | 163 | |
811e6cbe NB |
164 | /* first walk the list of devices to find a consistent set |
165 | * that match the criterea, if that is possible. | |
c30e5369 | 166 | * We flag the ones we like with 'used'. |
811e6cbe NB |
167 | */ |
168 | for (tmpdev = devlist; | |
169 | tmpdev; | |
5083d66b | 170 | tmpdev = tmpdev ? tmpdev->next : NULL) { |
811e6cbe | 171 | char *devname = tmpdev->devname; |
64c4757e | 172 | int dfd; |
518a60f3 | 173 | struct supertype *tst; |
4e8d9f0a | 174 | struct dev_policy *pol = NULL; |
5083d66b | 175 | int found_container = 0; |
52826846 | 176 | |
95425a89 N |
177 | if (tmpdev->used > 1) |
178 | continue; | |
da6b5ca9 | 179 | |
c39b2e63 N |
180 | if (ident->container) { |
181 | if (ident->container[0] == '/' && | |
182 | !same_dev(ident->container, devname)) { | |
183 | if (report_mismatch) | |
184 | pr_err("%s is not the container required (%s)\n", | |
185 | devname, ident->container); | |
186 | continue; | |
187 | } | |
188 | } else if (ident->devices && | |
189 | !match_oneof(ident->devices, devname)) { | |
190 | /* Note that we ignore the "device=" identifier if a | |
191 | * "container=" is given. Checking both is unnecessarily | |
192 | * complicated. | |
193 | */ | |
8cf2eb96 | 194 | if (report_mismatch) |
e7b84f9d | 195 | pr_err("%s is not one of %s\n", devname, ident->devices); |
52826846 | 196 | continue; |
56eedc1a | 197 | } |
4b1ac34b | 198 | |
518a60f3 JS |
199 | tst = dup_super(st); |
200 | ||
56d18859 | 201 | dfd = dev_open(devname, O_RDONLY); |
64c4757e | 202 | if (dfd < 0) { |
8cf2eb96 | 203 | if (report_mismatch) |
e7b84f9d N |
204 | pr_err("cannot open device %s: %s\n", |
205 | devname, strerror(errno)); | |
da6b5ca9 | 206 | tmpdev->used = 2; |
0a6bff09 | 207 | } else if (!fstat_is_blkdev(dfd, devname, &rdev)) { |
da6b5ca9 | 208 | tmpdev->used = 2; |
5083d66b N |
209 | } else if (must_be_container(dfd)) { |
210 | if (st) { | |
211 | /* already found some components, this cannot | |
212 | * be another one. | |
213 | */ | |
8cf2eb96 | 214 | if (report_mismatch) |
e7b84f9d N |
215 | pr_err("%s is a container, but we are looking for components\n", |
216 | devname); | |
5083d66b N |
217 | tmpdev->used = 2; |
218 | } if (!tst && (tst = super_by_fd(dfd, NULL)) == NULL) { | |
8cf2eb96 | 219 | if (report_mismatch) |
e7b84f9d N |
220 | pr_err("not a recognisable container: %s\n", |
221 | devname); | |
5083d66b | 222 | tmpdev->used = 2; |
417f346e HCP |
223 | } else if (!tst->ss->load_container |
224 | || tst->ss->load_container(tst, dfd, NULL)) { | |
8cf2eb96 | 225 | if (report_mismatch) |
e7b84f9d N |
226 | pr_err("no correct container type: %s\n", |
227 | devname); | |
5083d66b N |
228 | tmpdev->used = 2; |
229 | } else if (auto_assem && | |
0a6bff09 ZL |
230 | !conf_test_metadata(tst->ss->name, |
231 | (pol = devid_policy(rdev)), | |
4977146a | 232 | tst->ss->match_home(tst, c->homehost) == 1)) { |
8cf2eb96 | 233 | if (report_mismatch) |
7a862a02 | 234 | pr_err("%s has metadata type %s for which auto-assembly is disabled\n", |
e7b84f9d | 235 | devname, tst->ss->name); |
5083d66b N |
236 | tmpdev->used = 2; |
237 | } else | |
238 | found_container = 1; | |
52826846 | 239 | } else { |
5083d66b | 240 | if (!tst && (tst = guess_super(dfd)) == NULL) { |
8cf2eb96 | 241 | if (report_mismatch) |
e7b84f9d N |
242 | pr_err("no recogniseable superblock on %s\n", |
243 | devname); | |
5083d66b | 244 | tmpdev->used = 2; |
83607604 N |
245 | } else if ((tst->ignore_hw_compat = 0), |
246 | tst->ss->load_super(tst, dfd, | |
247 | report_mismatch ? devname : 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 && | |
0a6bff09 ZL |
258 | !conf_test_metadata(tst->ss->name, |
259 | (pol = devid_policy(rdev)), | |
4977146a | 260 | tst->ss->match_home(tst, c->homehost) == 1)) { |
8cf2eb96 | 261 | if (report_mismatch) |
7a862a02 | 262 | pr_err("%s has metadata type %s for which auto-assembly is disabled\n", |
e7b84f9d | 263 | devname, tst->ss->name); |
5083d66b N |
264 | tmpdev->used = 2; |
265 | } | |
64c4757e | 266 | } |
c06487ce | 267 | if (dfd >= 0) close(dfd); |
d68ea4d7 | 268 | if (tmpdev->used == 2) { |
d4386799 | 269 | if (auto_assem || !inargv) |
d68ea4d7 N |
270 | /* Ignore unrecognised devices during auto-assembly */ |
271 | goto loop; | |
272 | if (ident->uuid_set || ident->name[0] || | |
273 | ident->super_minor != UnSet) | |
274 | /* Ignore unrecognised device if looking for | |
275 | * specific array */ | |
276 | goto loop; | |
d68ea4d7 | 277 | |
e7b84f9d | 278 | pr_err("%s has no superblock - assembly aborted\n", |
79f9f56d | 279 | devname); |
d68ea4d7 N |
280 | if (st) |
281 | st->ss->free_super(st); | |
282 | dev_policy_free(pol); | |
cbeeb0e5 | 283 | domain_free(domains); |
95425a89 | 284 | return -1; |
d68ea4d7 | 285 | } |
52826846 | 286 | |
5083d66b | 287 | if (found_container) { |
9008ed1c N |
288 | /* tmpdev is a container. We need to be either |
289 | * looking for a member, or auto-assembling | |
290 | */ | |
56d18859 N |
291 | /* should be safe to try an exclusive open now, we |
292 | * have rejected anything that some other mdadm might | |
293 | * be looking at | |
294 | */ | |
295 | dfd = dev_open(devname, O_RDONLY | O_EXCL); | |
296 | if (dfd < 0) { | |
8cf2eb96 | 297 | if (report_mismatch) |
e7b84f9d | 298 | pr_err("%s is busy - skipping\n", devname); |
56d18859 N |
299 | goto loop; |
300 | } | |
301 | close(dfd); | |
9008ed1c | 302 | |
c39b2e63 N |
303 | if (ident->container && ident->container[0] != '/') { |
304 | /* we have a uuid */ | |
305 | int uuid[4]; | |
87477e6d | 306 | |
c39b2e63 N |
307 | content = *contentp; |
308 | tst->ss->getinfo_super(tst, content, NULL); | |
87477e6d | 309 | |
c39b2e63 N |
310 | if (!parse_uuid(ident->container, uuid) || |
311 | !same_uuid(content->uuid, uuid, tst->ss->swapuuid)) { | |
312 | if (report_mismatch) | |
313 | pr_err("%s has wrong UUID to be required container\n", | |
314 | devname); | |
315 | goto loop; | |
9008ed1c N |
316 | } |
317 | } | |
318 | /* It is worth looking inside this container. | |
319 | */ | |
4977146a | 320 | if (c->verbose > 0) |
e7b84f9d | 321 | pr_err("looking in container %s\n", |
79f9f56d | 322 | devname); |
1415fe4b | 323 | |
88cef9b3 N |
324 | for (content = tst->ss->container_content(tst, NULL); |
325 | content; | |
326 | content = content->next) { | |
1415fe4b | 327 | |
88cef9b3 | 328 | if (!ident_matches(ident, content, tst, |
86b77ddf N |
329 | c->homehost, c->require_homehost, |
330 | c->update, | |
8cf2eb96 | 331 | report_mismatch ? devname : NULL)) |
88cef9b3 N |
332 | /* message already printed */; |
333 | else if (is_member_busy(content->text_version)) { | |
8cf2eb96 | 334 | if (report_mismatch) |
e7b84f9d | 335 | pr_err("member %s in %s is already assembled\n", |
79f9f56d N |
336 | content->text_version, |
337 | devname); | |
81219e70 LM |
338 | } else if (content->array.state & (1<<MD_SB_BLOCK_VOLUME)) { |
339 | /* do not assemble arrays with unsupported configurations */ | |
e7b84f9d | 340 | pr_err("Cannot activate member %s in %s.\n", |
79f9f56d N |
341 | content->text_version, |
342 | devname); | |
88cef9b3 N |
343 | } else |
344 | break; | |
345 | } | |
346 | if (!content) { | |
f7ad3ccc | 347 | tmpdev->used = 2; |
88cef9b3 | 348 | goto loop; /* empty container */ |
fa031239 | 349 | } |
88cef9b3 | 350 | |
9008ed1c | 351 | st = tst; tst = NULL; |
4c1c3ad8 | 352 | if (!auto_assem && inargv && tmpdev->next != NULL) { |
7a862a02 | 353 | pr_err("%s is a container, but is not only device given: confused and aborting\n", |
79f9f56d | 354 | devname); |
9008ed1c | 355 | st->ss->free_super(st); |
4e8d9f0a | 356 | dev_policy_free(pol); |
cbeeb0e5 | 357 | domain_free(domains); |
95425a89 | 358 | return -1; |
9008ed1c | 359 | } |
4977146a | 360 | if (c->verbose > 0) |
e7b84f9d | 361 | pr_err("found match on member %s in %s\n", |
79f9f56d | 362 | content->text_version, devname); |
bac0d92e | 363 | |
5083d66b N |
364 | /* make sure we finished the loop */ |
365 | tmpdev = NULL; | |
bac0d92e | 366 | goto loop; |
5083d66b | 367 | } else { |
95425a89 | 368 | content = *contentp; |
5083d66b N |
369 | tst->ss->getinfo_super(tst, content, NULL); |
370 | ||
371 | if (!ident_matches(ident, content, tst, | |
86b77ddf N |
372 | c->homehost, c->require_homehost, |
373 | c->update, | |
8cf2eb96 | 374 | report_mismatch ? devname : NULL)) |
df37ffc0 | 375 | goto loop; |
66eb2c93 | 376 | |
5141638c N |
377 | if (auto_assem) { |
378 | /* Never auto-assemble things that conflict | |
379 | * with mdadm.conf in some way | |
1d04e275 | 380 | */ |
5141638c N |
381 | struct mddev_ident *match; |
382 | int rv = 0; | |
383 | ||
384 | match = conf_match(tst, content, devname, | |
385 | report_mismatch ? c->verbose : -1, | |
386 | &rv); | |
387 | if (!match && rv == 2) | |
388 | goto loop; | |
389 | if (match && match->devname && | |
390 | strcasecmp(match->devname, "<ignore>") == 0) { | |
391 | if (report_mismatch) | |
392 | pr_err("%s is a member of an explicitly ignored array\n", | |
393 | devname); | |
394 | goto loop; | |
395 | } | |
396 | if (match && !ident_matches(match, content, tst, | |
86b77ddf N |
397 | c->homehost, c->require_homehost, |
398 | c->update, | |
5141638c N |
399 | report_mismatch ? devname : NULL)) |
400 | /* Array exists in mdadm.conf but some | |
401 | * details don't match, so reject it | |
402 | */ | |
403 | goto loop; | |
404 | } | |
66eb2c93 | 405 | |
56d18859 N |
406 | /* should be safe to try an exclusive open now, we |
407 | * have rejected anything that some other mdadm might | |
408 | * be looking at | |
409 | */ | |
410 | dfd = dev_open(devname, O_RDONLY | O_EXCL); | |
411 | if (dfd < 0) { | |
8cf2eb96 | 412 | if (report_mismatch) |
e7b84f9d | 413 | pr_err("%s is busy - skipping\n", devname); |
56d18859 N |
414 | goto loop; |
415 | } | |
416 | close(dfd); | |
417 | ||
5083d66b N |
418 | if (st == NULL) |
419 | st = dup_super(tst); | |
420 | if (st->minor_version == -1) | |
421 | st->minor_version = tst->minor_version; | |
ed7fc6b4 AC |
422 | |
423 | if (memcmp(content->uuid, uuid_zero, | |
424 | sizeof(int[4])) == 0) { | |
425 | /* this is a floating spare. It cannot define | |
426 | * an array unless there are no more arrays of | |
427 | * this type to be found. It can be included | |
428 | * in an array of this type though. | |
429 | */ | |
430 | tmpdev->used = 3; | |
431 | goto loop; | |
432 | } | |
433 | ||
5083d66b N |
434 | if (st->ss != tst->ss || |
435 | st->minor_version != tst->minor_version || | |
436 | st->ss->compare_super(st, tst) != 0) { | |
437 | /* Some mismatch. If exactly one array matches this host, | |
438 | * we can resolve on that one. | |
439 | * Or, if we are auto assembling, we just ignore the second | |
440 | * for now. | |
441 | */ | |
442 | if (auto_assem) | |
443 | goto loop; | |
4977146a N |
444 | if (c->homehost) { |
445 | int first = st->ss->match_home(st, c->homehost); | |
446 | int last = tst->ss->match_home(tst, c->homehost); | |
5083d66b N |
447 | if (first != last && |
448 | (first == 1 || last == 1)) { | |
449 | /* We can do something */ | |
450 | if (first) {/* just ignore this one */ | |
8cf2eb96 | 451 | if (report_mismatch) |
e7b84f9d | 452 | pr_err("%s misses out due to wrong homehost\n", |
79f9f56d | 453 | devname); |
5083d66b N |
454 | goto loop; |
455 | } else { /* reject all those sofar */ | |
456 | struct mddev_dev *td; | |
8cf2eb96 | 457 | if (report_mismatch) |
e7b84f9d | 458 | pr_err("%s overrides previous devices due to good homehost\n", |
79f9f56d | 459 | devname); |
5083d66b N |
460 | for (td=devlist; td != tmpdev; td=td->next) |
461 | if (td->used == 1) | |
462 | td->used = 0; | |
463 | tmpdev->used = 1; | |
464 | goto loop; | |
465 | } | |
83b6208e NB |
466 | } |
467 | } | |
e7b84f9d | 468 | pr_err("superblock on %s doesn't match others - assembly aborted\n", |
79f9f56d | 469 | devname); |
5083d66b N |
470 | tst->ss->free_super(tst); |
471 | st->ss->free_super(st); | |
472 | dev_policy_free(pol); | |
cbeeb0e5 | 473 | domain_free(domains); |
95425a89 | 474 | return -1; |
83b6208e | 475 | } |
5083d66b | 476 | tmpdev->used = 1; |
64c4757e | 477 | } |
df37ffc0 | 478 | loop: |
cbeeb0e5 | 479 | /* Collect domain information from members only */ |
26b05aea AC |
480 | if (tmpdev && tmpdev->used == 1) { |
481 | if (!pol) | |
0a6bff09 | 482 | pol = devid_policy(rdev); |
cbeeb0e5 | 483 | domain_merge(&domains, pol, tst?tst->ss->name:NULL); |
26b05aea | 484 | } |
4e8d9f0a N |
485 | dev_policy_free(pol); |
486 | pol = NULL; | |
3d2b16e7 NB |
487 | if (tst) |
488 | tst->ss->free_super(tst); | |
811e6cbe NB |
489 | } |
490 | ||
ed7fc6b4 | 491 | /* Check if we found some imsm spares but no members */ |
3c7b4a25 CA |
492 | if ((auto_assem || |
493 | (ident->uuid_set && | |
494 | memcmp(uuid_zero, ident->uuid,sizeof(uuid_zero)) == 0)) && | |
495 | (!st || !st->sb)) | |
ed7fc6b4 AC |
496 | for (tmpdev = devlist; tmpdev; tmpdev = tmpdev->next) { |
497 | if (tmpdev->used != 3) | |
498 | continue; | |
499 | tmpdev->used = 1; | |
95425a89 | 500 | content = *contentp; |
ed7fc6b4 AC |
501 | |
502 | if (!st->sb) { | |
503 | /* we need sb from one of the spares */ | |
504 | int dfd = dev_open(tmpdev->devname, O_RDONLY); | |
505 | if (dfd < 0 || | |
506 | st->ss->load_super(st, dfd, NULL)) | |
507 | tmpdev->used = 2; | |
508 | if (dfd > 0) | |
509 | close(dfd); | |
510 | } | |
511 | } | |
512 | ||
cbeeb0e5 AC |
513 | /* Now reject spares that don't match domains of identified members */ |
514 | for (tmpdev = devlist; tmpdev; tmpdev = tmpdev->next) { | |
515 | struct stat stb; | |
516 | if (tmpdev->used != 3) | |
517 | continue; | |
518 | if (stat(tmpdev->devname, &stb)< 0) { | |
e7b84f9d | 519 | pr_err("fstat failed for %s: %s\n", |
79f9f56d | 520 | tmpdev->devname, strerror(errno)); |
cbeeb0e5 AC |
521 | tmpdev->used = 2; |
522 | } else { | |
4dd2df09 | 523 | struct dev_policy *pol = devid_policy(stb.st_rdev); |
a5d10dce N |
524 | int dt = domain_test(domains, pol, NULL); |
525 | if (inargv && dt != 0) | |
526 | /* take this spare as domains match | |
527 | * if there are any */ | |
528 | tmpdev->used = 1; | |
529 | else if (!inargv && dt == 1) | |
530 | /* device wasn't explicitly listed, so need | |
531 | * explicit domain match - which we have */ | |
cbeeb0e5 AC |
532 | tmpdev->used = 1; |
533 | else | |
534 | /* if domains don't match mark as unused */ | |
535 | tmpdev->used = 0; | |
536 | dev_policy_free(pol); | |
537 | } | |
538 | } | |
539 | domain_free(domains); | |
95425a89 N |
540 | *stp = st; |
541 | if (st && st->sb && content == *contentp) | |
542 | st->ss->getinfo_super(st, content, NULL); | |
543 | *contentp = content; | |
544 | ||
545 | return num_devs; | |
546 | } | |
547 | ||
2c355c22 N |
548 | struct devs { |
549 | char *devname; | |
550 | int uptodate; /* set once we decide that this device is as | |
551 | * recent as everything else in the array. | |
552 | */ | |
553 | int included; /* set if the device is already in the array | |
554 | * due to a previous '-I' | |
555 | */ | |
556 | struct mdinfo i; | |
557 | }; | |
558 | ||
559 | static int load_devices(struct devs *devices, char *devmap, | |
df842e69 | 560 | struct mddev_ident *ident, struct supertype **stp, |
2c355c22 N |
561 | struct mddev_dev *devlist, struct context *c, |
562 | struct mdinfo *content, | |
563 | int mdfd, char *mddev, | |
564 | int *most_recentp, int *bestcntp, int **bestp, | |
565 | int inargv) | |
566 | { | |
567 | struct mddev_dev *tmpdev; | |
568 | int devcnt = 0; | |
569 | int nextspare = 0; | |
2c355c22 | 570 | int bitmap_done = 0; |
a792ece6 | 571 | int most_recent = -1; |
2c355c22 N |
572 | int bestcnt = 0; |
573 | int *best = *bestp; | |
df842e69 | 574 | struct supertype *st = *stp; |
2c355c22 N |
575 | |
576 | for (tmpdev = devlist; tmpdev; tmpdev=tmpdev->next) { | |
577 | char *devname = tmpdev->devname; | |
578 | struct stat stb; | |
9ee314da | 579 | struct supertype *tst; |
2c355c22 | 580 | int i; |
e9e6894d | 581 | int dfd; |
2c355c22 N |
582 | |
583 | if (tmpdev->used != 1) | |
584 | continue; | |
585 | /* looks like a good enough match to update the super block if needed */ | |
2c355c22 | 586 | if (c->update) { |
2c355c22 N |
587 | /* prepare useful information in info structures */ |
588 | struct stat stb2; | |
2c355c22 N |
589 | int err; |
590 | fstat(mdfd, &stb2); | |
591 | ||
c5f71c24 JS |
592 | if (strcmp(c->update, "uuid") == 0 && !ident->uuid_set) |
593 | random_uuid((__u8 *)ident->uuid); | |
594 | ||
e6e9dd3f AP |
595 | if (strcmp(c->update, "ppl") == 0 && |
596 | ident->bitmap_fd >= 0) { | |
597 | pr_err("PPL is not compatible with bitmap\n"); | |
598 | return -1; | |
599 | } | |
600 | ||
2c355c22 N |
601 | dfd = dev_open(devname, |
602 | tmpdev->disposition == 'I' | |
603 | ? O_RDWR : (O_RDWR|O_EXCL)); | |
604 | ||
605 | tst = dup_super(st); | |
606 | if (dfd < 0 || tst->ss->load_super(tst, dfd, NULL) != 0) { | |
607 | pr_err("cannot re-read metadata from %s - aborting\n", | |
608 | devname); | |
609 | if (dfd >= 0) | |
610 | close(dfd); | |
611 | close(mdfd); | |
612 | free(devices); | |
613 | free(devmap); | |
9ee314da N |
614 | tst->ss->free_super(tst); |
615 | free(tst); | |
df842e69 | 616 | *stp = st; |
2c355c22 N |
617 | return -1; |
618 | } | |
619 | tst->ss->getinfo_super(tst, content, devmap + devcnt * content->array.raid_disks); | |
620 | ||
621 | memcpy(content->uuid, ident->uuid, 16); | |
622 | strcpy(content->name, ident->name); | |
623 | content->array.md_minor = minor(stb2.st_rdev); | |
624 | ||
625 | if (strcmp(c->update, "byteorder") == 0) | |
626 | err = 0; | |
0aa2f15b GJ |
627 | else if (strcmp(c->update, "home-cluster") == 0) { |
628 | tst->cluster_name = c->homecluster; | |
d80f7aa9 | 629 | err = tst->ss->write_bitmap(tst, dfd, NameUpdate); |
7e6e839a GJ |
630 | } else if (strcmp(c->update, "nodes") == 0) { |
631 | tst->nodes = c->nodes; | |
632 | err = tst->ss->write_bitmap(tst, dfd, NodeNumUpdate); | |
d5ff855d N |
633 | } else if (strcmp(c->update, "revert-reshape") == 0 && |
634 | c->invalid_backup) | |
635 | err = tst->ss->update_super(tst, content, | |
636 | "revert-reshape-nobackup", | |
637 | devname, c->verbose, | |
638 | ident->uuid_set, | |
639 | c->homehost); | |
640 | else | |
2c355c22 N |
641 | err = tst->ss->update_super(tst, content, c->update, |
642 | devname, c->verbose, | |
643 | ident->uuid_set, | |
644 | c->homehost); | |
645 | if (err < 0) { | |
afa368f4 | 646 | if (err == -1) |
7a862a02 | 647 | pr_err("--update=%s not understood for %s metadata\n", |
afa368f4 | 648 | c->update, tst->ss->name); |
2c355c22 N |
649 | tst->ss->free_super(tst); |
650 | free(tst); | |
651 | close(mdfd); | |
652 | close(dfd); | |
653 | free(devices); | |
654 | free(devmap); | |
df842e69 | 655 | *stp = st; |
2c355c22 N |
656 | return -1; |
657 | } | |
658 | if (strcmp(c->update, "uuid")==0 && | |
659 | !ident->uuid_set) { | |
660 | ident->uuid_set = 1; | |
661 | memcpy(ident->uuid, content->uuid, 16); | |
662 | } | |
663 | if (tst->ss->store_super(tst, dfd)) | |
664 | pr_err("Could not re-write superblock on %s.\n", | |
665 | devname); | |
2c355c22 N |
666 | |
667 | if (strcmp(c->update, "uuid")==0 && | |
668 | ident->bitmap_fd >= 0 && !bitmap_done) { | |
669 | if (bitmap_update_uuid(ident->bitmap_fd, | |
670 | content->uuid, | |
671 | tst->ss->swapuuid) != 0) | |
672 | pr_err("Could not update uuid on external bitmap.\n"); | |
673 | else | |
674 | bitmap_done = 1; | |
675 | } | |
32141c17 | 676 | } else { |
e9e6894d N |
677 | dfd = dev_open(devname, |
678 | tmpdev->disposition == 'I' | |
679 | ? O_RDWR : (O_RDWR|O_EXCL)); | |
9ee314da | 680 | tst = dup_super(st); |
2c355c22 N |
681 | |
682 | if (dfd < 0 || tst->ss->load_super(tst, dfd, NULL) != 0) { | |
683 | pr_err("cannot re-read metadata from %s - aborting\n", | |
684 | devname); | |
685 | if (dfd >= 0) | |
686 | close(dfd); | |
687 | close(mdfd); | |
688 | free(devices); | |
689 | free(devmap); | |
9ee314da N |
690 | tst->ss->free_super(tst); |
691 | free(tst); | |
df842e69 | 692 | *stp = st; |
2c355c22 N |
693 | return -1; |
694 | } | |
695 | tst->ss->getinfo_super(tst, content, devmap + devcnt * content->array.raid_disks); | |
2c355c22 N |
696 | } |
697 | ||
e9e6894d N |
698 | fstat(dfd, &stb); |
699 | close(dfd); | |
2c355c22 N |
700 | |
701 | if (c->verbose > 0) | |
aacb2f81 N |
702 | pr_err("%s is identified as a member of %s, slot %d%s.\n", |
703 | devname, mddev, content->disk.raid_disk, | |
704 | (content->disk.state & (1<<MD_DISK_REPLACEMENT)) ? " replacement":""); | |
2c355c22 N |
705 | devices[devcnt].devname = devname; |
706 | devices[devcnt].uptodate = 0; | |
707 | devices[devcnt].included = (tmpdev->disposition == 'I'); | |
708 | devices[devcnt].i = *content; | |
709 | devices[devcnt].i.disk.major = major(stb.st_rdev); | |
710 | devices[devcnt].i.disk.minor = minor(stb.st_rdev); | |
f80057ae | 711 | |
a792ece6 N |
712 | if (devices[devcnt].i.disk.state == 6) { |
713 | if (most_recent < 0 || | |
714 | devices[devcnt].i.events | |
56bbc588 N |
715 | > devices[most_recent].i.events) { |
716 | struct supertype *tmp = tst; | |
717 | tst = st; | |
718 | st = tmp; | |
2c355c22 | 719 | most_recent = devcnt; |
56bbc588 | 720 | } |
a792ece6 | 721 | } |
9ee314da N |
722 | tst->ss->free_super(tst); |
723 | free(tst); | |
f80057ae | 724 | |
2c355c22 N |
725 | if (content->array.level == LEVEL_MULTIPATH) |
726 | /* with multipath, the raid_disk from the superblock is meaningless */ | |
727 | i = devcnt; | |
728 | else | |
729 | i = devices[devcnt].i.disk.raid_disk; | |
69a48116 | 730 | if (i+1 == 0 || i == MD_DISK_ROLE_JOURNAL) { |
aacb2f81 N |
731 | if (nextspare < content->array.raid_disks*2) |
732 | nextspare = content->array.raid_disks*2; | |
2c355c22 N |
733 | i = nextspare++; |
734 | } else { | |
aacb2f81 N |
735 | /* i is raid_disk - double it so there is room for |
736 | * replacements */ | |
737 | i *= 2; | |
738 | if (devices[devcnt].i.disk.state & (1<<MD_DISK_REPLACEMENT)) | |
739 | i++; | |
740 | if (i >= content->array.raid_disks*2 && | |
2c355c22 N |
741 | i >= nextspare) |
742 | nextspare = i+1; | |
743 | } | |
744 | if (i < 10000) { | |
745 | if (i >= bestcnt) { | |
746 | int newbestcnt = i+10; | |
747 | int *newbest = xmalloc(sizeof(int)*newbestcnt); | |
748 | int c; | |
749 | for (c=0; c < newbestcnt; c++) | |
750 | if (c < bestcnt) | |
751 | newbest[c] = best[c]; | |
752 | else | |
753 | newbest[c] = -1; | |
754 | if (best)free(best); | |
755 | best = newbest; | |
756 | bestcnt = newbestcnt; | |
757 | } | |
758 | if (best[i] >=0 && | |
759 | devices[best[i]].i.events | |
760 | == devices[devcnt].i.events | |
761 | && (devices[best[i]].i.disk.minor | |
762 | != devices[devcnt].i.disk.minor) | |
763 | && st->ss == &super0 | |
764 | && content->array.level != LEVEL_MULTIPATH) { | |
765 | /* two different devices with identical superblock. | |
766 | * Could be a mis-detection caused by overlapping | |
767 | * partitions. fail-safe. | |
768 | */ | |
7a862a02 N |
769 | pr_err("WARNING %s and %s appear to have very similar superblocks.\n" |
770 | " If they are really different, please --zero the superblock on one\n" | |
771 | " If they are the same or overlap, please remove one from %s.\n", | |
2c355c22 N |
772 | devices[best[i]].devname, devname, |
773 | inargv ? "the list" : | |
774 | "the\n DEVICE list in mdadm.conf" | |
775 | ); | |
776 | close(mdfd); | |
777 | free(devices); | |
778 | free(devmap); | |
df842e69 | 779 | *stp = st; |
2c355c22 N |
780 | return -1; |
781 | } | |
782 | if (best[i] == -1 | |
783 | || (devices[best[i]].i.events | |
784 | < devices[devcnt].i.events)) | |
785 | best[i] = devcnt; | |
786 | } | |
787 | devcnt++; | |
788 | } | |
a792ece6 N |
789 | if (most_recent >= 0) |
790 | *most_recentp = most_recent; | |
2c355c22 N |
791 | *bestcntp = bestcnt; |
792 | *bestp = best; | |
df842e69 | 793 | *stp = st; |
2c355c22 N |
794 | return devcnt; |
795 | } | |
796 | ||
9f5470ce N |
797 | static int force_array(struct mdinfo *content, |
798 | struct devs *devices, | |
799 | int *best, int bestcnt, char *avail, | |
800 | int most_recent, | |
801 | struct supertype *st, | |
802 | struct context *c) | |
803 | { | |
804 | int okcnt = 0; | |
805 | while (!enough(content->array.level, content->array.raid_disks, | |
806 | content->array.layout, 1, | |
807 | avail) | |
808 | || | |
809 | (content->reshape_active && content->delta_disks > 0 && | |
810 | !enough(content->array.level, (content->array.raid_disks | |
811 | - content->delta_disks), | |
812 | content->new_layout, 1, | |
813 | avail) | |
814 | )) { | |
815 | /* Choose the newest best drive which is | |
816 | * not up-to-date, update the superblock | |
817 | * and add it. | |
818 | */ | |
819 | int fd; | |
820 | struct supertype *tst; | |
821 | unsigned long long current_events; | |
822 | int chosen_drive = -1; | |
823 | int i; | |
824 | ||
f81a2b56 N |
825 | for (i = 0; |
826 | i < content->array.raid_disks * 2 && i < bestcnt; | |
827 | i += 2) { | |
9f5470ce | 828 | int j = best[i]; |
87af7267 N |
829 | if (j < 0) |
830 | continue; | |
831 | if (devices[j].uptodate) | |
832 | continue; | |
833 | if (devices[j].i.recovery_start != MaxSector) { | |
834 | int delta; | |
835 | if (!devices[j].i.reshape_active || | |
836 | devices[j].i.delta_disks <= 0) | |
837 | continue; | |
838 | /* When increasing number of devices, an | |
839 | * added device also appears to be | |
840 | * recovering. It is safe to include it | |
841 | * as long as it won't be a source of | |
842 | * data. | |
843 | * For now, just allow for last data | |
844 | * devices in RAID4 or last devices in RAID4/5/6. | |
845 | */ | |
846 | delta = devices[j].i.delta_disks; | |
847 | if (devices[j].i.array.level >= 4 && | |
848 | devices[j].i.array.level <= 6 && | |
849 | i/2 >= content->array.raid_disks - delta) | |
850 | /* OK */; | |
851 | else if (devices[j].i.array.level == 4 && | |
852 | i/2 >= content->array.raid_disks - delta - 1) | |
853 | /* OK */; | |
854 | else | |
855 | continue; | |
856 | } | |
857 | if (chosen_drive < 0 || | |
9f5470ce | 858 | devices[j].i.events |
87af7267 | 859 | > devices[chosen_drive].i.events) |
9f5470ce N |
860 | chosen_drive = j; |
861 | } | |
862 | if (chosen_drive < 0) | |
863 | break; | |
864 | current_events = devices[chosen_drive].i.events; | |
865 | add_another: | |
866 | if (c->verbose >= 0) | |
867 | pr_err("forcing event count in %s(%d) from %d upto %d\n", | |
79f9f56d N |
868 | devices[chosen_drive].devname, |
869 | devices[chosen_drive].i.disk.raid_disk, | |
870 | (int)(devices[chosen_drive].i.events), | |
871 | (int)(devices[most_recent].i.events)); | |
9f5470ce N |
872 | fd = dev_open(devices[chosen_drive].devname, |
873 | devices[chosen_drive].included ? O_RDWR | |
874 | : (O_RDWR|O_EXCL)); | |
875 | if (fd < 0) { | |
876 | pr_err("Couldn't open %s for write - not updating\n", | |
79f9f56d | 877 | devices[chosen_drive].devname); |
9f5470ce N |
878 | devices[chosen_drive].i.events = 0; |
879 | continue; | |
880 | } | |
881 | tst = dup_super(st); | |
882 | if (tst->ss->load_super(tst,fd, NULL)) { | |
883 | close(fd); | |
884 | pr_err("RAID superblock disappeared from %s - not updating.\n", | |
79f9f56d | 885 | devices[chosen_drive].devname); |
9f5470ce N |
886 | devices[chosen_drive].i.events = 0; |
887 | continue; | |
888 | } | |
889 | content->events = devices[most_recent].i.events; | |
890 | tst->ss->update_super(tst, content, "force-one", | |
79f9f56d N |
891 | devices[chosen_drive].devname, c->verbose, |
892 | 0, NULL); | |
9f5470ce N |
893 | |
894 | if (tst->ss->store_super(tst, fd)) { | |
895 | close(fd); | |
896 | pr_err("Could not re-write superblock on %s\n", | |
79f9f56d | 897 | devices[chosen_drive].devname); |
9f5470ce N |
898 | devices[chosen_drive].i.events = 0; |
899 | tst->ss->free_super(tst); | |
900 | continue; | |
901 | } | |
902 | close(fd); | |
903 | devices[chosen_drive].i.events = devices[most_recent].i.events; | |
904 | devices[chosen_drive].uptodate = 1; | |
905 | avail[chosen_drive] = 1; | |
906 | okcnt++; | |
907 | tst->ss->free_super(tst); | |
9f5470ce N |
908 | /* If there are any other drives of the same vintage, |
909 | * add them in as well. We can't lose and we might gain | |
910 | */ | |
f81a2b56 N |
911 | for (i = 0; |
912 | i < content->array.raid_disks * 2 && i < bestcnt ; | |
913 | i += 2) { | |
9f5470ce N |
914 | int j = best[i]; |
915 | if (j >= 0 && | |
916 | !devices[j].uptodate && | |
917 | devices[j].i.recovery_start == MaxSector && | |
918 | devices[j].i.events == current_events) { | |
919 | chosen_drive = j; | |
920 | goto add_another; | |
921 | } | |
922 | } | |
923 | } | |
924 | return okcnt; | |
925 | } | |
926 | ||
ddc1b11f N |
927 | static int start_array(int mdfd, |
928 | char *mddev, | |
929 | struct mdinfo *content, | |
930 | struct supertype *st, | |
931 | struct mddev_ident *ident, | |
932 | int *best, int bestcnt, | |
933 | int chosen_drive, | |
934 | struct devs *devices, | |
935 | unsigned int okcnt, | |
936 | unsigned int sparecnt, | |
937 | unsigned int rebuilding_cnt, | |
69a48116 | 938 | unsigned int journalcnt, |
ddc1b11f N |
939 | struct context *c, |
940 | int clean, char *avail, | |
8cde842b | 941 | int start_partial_ok, |
71417de6 | 942 | int err_ok, |
051f3265 | 943 | int was_forced |
ddc1b11f N |
944 | ) |
945 | { | |
946 | int rv; | |
947 | int i; | |
948 | unsigned int req_cnt; | |
949 | ||
051f3265 | 950 | if (content->journal_device_required && (content->journal_clean == 0)) { |
69a48116 SL |
951 | if (!c->force) { |
952 | pr_err("Not safe to assemble with missing or stale journal device, consider --force.\n"); | |
953 | return 1; | |
954 | } | |
955 | pr_err("Journal is missing or stale, starting array read only.\n"); | |
956 | c->readonly = 1; | |
957 | } | |
958 | ||
e97a7cd0 AP |
959 | if (content->consistency_policy == CONSISTENCY_POLICY_PPL) |
960 | clean = 1; | |
961 | ||
ddc1b11f | 962 | rv = set_array_info(mdfd, st, content); |
71417de6 | 963 | if (rv && !err_ok) { |
ddc1b11f N |
964 | pr_err("failed to set array info for %s: %s\n", |
965 | mddev, strerror(errno)); | |
966 | return 1; | |
967 | } | |
968 | if (ident->bitmap_fd >= 0) { | |
969 | if (ioctl(mdfd, SET_BITMAP_FILE, ident->bitmap_fd) != 0) { | |
970 | pr_err("SET_BITMAP_FILE failed.\n"); | |
971 | return 1; | |
972 | } | |
973 | } else if (ident->bitmap_file) { | |
974 | /* From config file */ | |
975 | int bmfd = open(ident->bitmap_file, O_RDWR); | |
976 | if (bmfd < 0) { | |
977 | pr_err("Could not open bitmap file %s\n", | |
978 | ident->bitmap_file); | |
979 | return 1; | |
980 | } | |
981 | if (ioctl(mdfd, SET_BITMAP_FILE, bmfd) != 0) { | |
982 | pr_err("Failed to set bitmapfile for %s\n", mddev); | |
983 | close(bmfd); | |
984 | return 1; | |
985 | } | |
986 | close(bmfd); | |
987 | } | |
988 | ||
989 | /* First, add the raid disks, but add the chosen one last */ | |
94b53b77 | 990 | for (i = 0; i <= bestcnt; i++) { |
ddc1b11f N |
991 | int j; |
992 | if (i < bestcnt) { | |
993 | j = best[i]; | |
994 | if (j == chosen_drive) | |
995 | continue; | |
996 | } else | |
997 | j = chosen_drive; | |
998 | ||
999 | if (j >= 0 && !devices[j].included) { | |
94b53b77 JS |
1000 | int dfd; |
1001 | ||
1002 | dfd = dev_open(devices[j].devname, O_RDWR|O_EXCL); | |
ddc1b11f N |
1003 | if (dfd >= 0) { |
1004 | remove_partitions(dfd); | |
1005 | close(dfd); | |
1006 | } | |
1007 | rv = add_disk(mdfd, st, content, &devices[j].i); | |
1008 | ||
1009 | if (rv) { | |
7a862a02 | 1010 | pr_err("failed to add %s to %s: %s\n", |
94b53b77 | 1011 | devices[j].devname, mddev, |
ddc1b11f | 1012 | strerror(errno)); |
94b53b77 JS |
1013 | if (i < content->array.raid_disks * 2 || |
1014 | i == bestcnt) | |
ddc1b11f N |
1015 | okcnt--; |
1016 | else | |
1017 | sparecnt--; | |
94b53b77 | 1018 | } else if (c->verbose > 0) { |
aacb2f81 | 1019 | pr_err("added %s to %s as %d%s%s\n", |
ddc1b11f N |
1020 | devices[j].devname, mddev, |
1021 | devices[j].i.disk.raid_disk, | |
1022 | devices[j].uptodate?"": | |
aacb2f81 | 1023 | " (possibly out of date)", |
94b53b77 JS |
1024 | (devices[j].i.disk.state & |
1025 | (1<<MD_DISK_REPLACEMENT)) ? | |
1026 | " replacement":""); | |
1027 | } | |
ddc1b11f N |
1028 | } else if (j >= 0) { |
1029 | if (c->verbose > 0) | |
1030 | pr_err("%s is already in %s as %d\n", | |
1031 | devices[j].devname, mddev, | |
1032 | devices[j].i.disk.raid_disk); | |
94b53b77 JS |
1033 | } else if (c->verbose > 0 && |
1034 | i < content->array.raid_disks * 2 && (i & 1) == 0) | |
ddc1b11f | 1035 | pr_err("no uptodate device for slot %d of %s\n", |
ee466574 | 1036 | i/2, mddev); |
ddc1b11f N |
1037 | } |
1038 | ||
1039 | if (content->array.level == LEVEL_CONTAINER) { | |
1040 | if (c->verbose >= 0) { | |
7a862a02 | 1041 | pr_err("Container %s has been assembled with %d drive%s", |
94b53b77 JS |
1042 | mddev, okcnt + sparecnt + journalcnt, |
1043 | okcnt + sparecnt + journalcnt == 1 ? "" : "s"); | |
ddc1b11f N |
1044 | if (okcnt < (unsigned)content->array.raid_disks) |
1045 | fprintf(stderr, " (out of %d)", | |
1046 | content->array.raid_disks); | |
1047 | fprintf(stderr, "\n"); | |
1048 | } | |
0c21b485 PB |
1049 | |
1050 | if (st->ss->validate_container) { | |
1051 | struct mdinfo *devices_list; | |
94b53b77 | 1052 | struct mdinfo *info_devices; |
0c21b485 | 1053 | unsigned int count; |
94b53b77 | 1054 | |
0c21b485 | 1055 | devices_list = NULL; |
94b53b77 JS |
1056 | info_devices = xmalloc(sizeof(struct mdinfo) * |
1057 | (okcnt + sparecnt)); | |
1058 | for (count = 0; count < okcnt + sparecnt; count++) { | |
0c21b485 PB |
1059 | info_devices[count] = devices[count].i; |
1060 | info_devices[count].next = devices_list; | |
1061 | devices_list = &info_devices[count]; | |
1062 | } | |
1063 | if (st->ss->validate_container(devices_list)) | |
1064 | pr_err("Mismatch detected!\n"); | |
1065 | free(info_devices); | |
1066 | } | |
1067 | ||
ddc1b11f N |
1068 | st->ss->free_super(st); |
1069 | sysfs_uevent(content, "change"); | |
284546ef N |
1070 | if (err_ok && okcnt < (unsigned)content->array.raid_disks) |
1071 | /* Was partial, is still partial, so signal an error | |
1072 | * to ensure we don't retry */ | |
1073 | return 1; | |
ddc1b11f N |
1074 | return 0; |
1075 | } | |
1076 | ||
1077 | /* Get number of in-sync devices according to the superblock. | |
1078 | * We must have this number to start the array without -s or -R | |
1079 | */ | |
1080 | req_cnt = content->array.working_disks; | |
1081 | ||
1082 | if (c->runstop == 1 || | |
1083 | (c->runstop <= 0 && | |
94b53b77 JS |
1084 | (enough(content->array.level, content->array.raid_disks, |
1085 | content->array.layout, clean, avail) && | |
1086 | (okcnt + rebuilding_cnt >= req_cnt || start_partial_ok)))) { | |
ddc1b11f N |
1087 | /* This array is good-to-go. |
1088 | * If a reshape is in progress then we might need to | |
1089 | * continue monitoring it. In that case we start | |
1090 | * it read-only and let the grow code make it writable. | |
1091 | */ | |
1092 | int rv; | |
94b53b77 | 1093 | |
ddc1b11f N |
1094 | if (content->reshape_active && |
1095 | !(content->reshape_active & RESHAPE_NO_BACKUP) && | |
1096 | content->delta_disks <= 0) { | |
be7c26b4 N |
1097 | if (!c->backup_file) { |
1098 | pr_err("%s: Need a backup file to complete reshape of this array.\n", | |
1099 | mddev); | |
1100 | pr_err("Please provided one with \"--backup-file=...\"\n"); | |
1101 | if (c->update && | |
1102 | strcmp(c->update, "revert-reshape") == 0) | |
1103 | pr_err("(Don't specify --update=revert-reshape again, that part succeeded.)\n"); | |
1104 | return 1; | |
1105 | } | |
ddc1b11f N |
1106 | rv = sysfs_set_str(content, NULL, |
1107 | "array_state", "readonly"); | |
1108 | if (rv == 0) | |
1109 | rv = Grow_continue(mdfd, st, content, | |
06e293d0 | 1110 | c->backup_file, 0, |
ddc1b11f N |
1111 | c->freeze_reshape); |
1112 | } else if (c->readonly && | |
94b53b77 JS |
1113 | sysfs_attribute_available(content, NULL, |
1114 | "array_state")) { | |
ddc1b11f N |
1115 | rv = sysfs_set_str(content, NULL, |
1116 | "array_state", "readonly"); | |
1117 | } else | |
ddc1b11f | 1118 | rv = ioctl(mdfd, RUN_ARRAY, NULL); |
8832342d | 1119 | reopen_mddev(mdfd); /* drop O_EXCL */ |
ddc1b11f N |
1120 | if (rv == 0) { |
1121 | if (c->verbose >= 0) { | |
1122 | pr_err("%s has been started with %d drive%s", | |
1123 | mddev, okcnt, okcnt==1?"":"s"); | |
1124 | if (okcnt < (unsigned)content->array.raid_disks) | |
94b53b77 JS |
1125 | fprintf(stderr, " (out of %d)", |
1126 | content->array.raid_disks); | |
ddc1b11f | 1127 | if (rebuilding_cnt) |
94b53b77 JS |
1128 | fprintf(stderr, "%s %d rebuilding", |
1129 | sparecnt?",":" and", | |
1130 | rebuilding_cnt); | |
ddc1b11f | 1131 | if (sparecnt) |
94b53b77 JS |
1132 | fprintf(stderr, " and %d spare%s", |
1133 | sparecnt, | |
1134 | sparecnt == 1 ? "" : "s"); | |
051f3265 | 1135 | if (content->journal_clean) |
94b53b77 JS |
1136 | fprintf(stderr, " and %d journal", |
1137 | journalcnt); | |
ddc1b11f N |
1138 | fprintf(stderr, ".\n"); |
1139 | } | |
1140 | if (content->reshape_active && | |
1141 | content->array.level >= 4 && | |
1142 | content->array.level <= 6) { | |
1143 | /* might need to increase the size | |
1144 | * of the stripe cache - default is 256 | |
1145 | */ | |
56fcbcbb | 1146 | int chunk_size = content->array.chunk_size; |
94b53b77 | 1147 | |
56fcbcbb N |
1148 | if (content->reshape_active && |
1149 | content->new_chunk > chunk_size) | |
1150 | chunk_size = content->new_chunk; | |
29a312f2 | 1151 | if (256 < 4 * ((chunk_size+4065)/4096)) { |
94b53b77 JS |
1152 | struct mdinfo *sra; |
1153 | ||
1154 | sra = sysfs_read(mdfd, NULL, 0); | |
ddc1b11f N |
1155 | if (sra) |
1156 | sysfs_set_num(sra, NULL, | |
1157 | "stripe_cache_size", | |
29a312f2 | 1158 | (4 * chunk_size / 4096) + 1); |
ddc1b11f N |
1159 | sysfs_free(sra); |
1160 | } | |
1161 | } | |
1162 | if (okcnt < (unsigned)content->array.raid_disks) { | |
1163 | /* If any devices did not get added | |
1164 | * because the kernel rejected them based | |
1165 | * on event count, try adding them | |
1166 | * again providing the action policy is | |
1167 | * 're-add' or greater. The bitmap | |
1168 | * might allow them to be included, or | |
1169 | * they will become spares. | |
1170 | */ | |
1171 | for (i = 0; i < bestcnt; i++) { | |
1172 | int j = best[i]; | |
1173 | if (j >= 0 && !devices[j].uptodate) { | |
1174 | if (!disk_action_allows(&devices[j].i, st->ss->name, act_re_add)) | |
1175 | continue; | |
1176 | rv = add_disk(mdfd, st, content, | |
1177 | &devices[j].i); | |
1178 | if (rv == 0 && c->verbose >= 0) | |
1179 | pr_err("%s has been re-added.\n", | |
1180 | devices[j].devname); | |
1181 | } | |
1182 | } | |
1183 | } | |
8cde842b N |
1184 | if (content->array.level == 6 && |
1185 | okcnt + 1 == (unsigned)content->array.raid_disks && | |
1186 | was_forced) { | |
94b53b77 JS |
1187 | struct mdinfo *sra; |
1188 | ||
1189 | sra = sysfs_read(mdfd, NULL, 0); | |
8cde842b N |
1190 | if (sra) |
1191 | sysfs_set_str(sra, NULL, | |
1192 | "sync_action", "repair"); | |
1193 | sysfs_free(sra); | |
1194 | } | |
ddc1b11f N |
1195 | return 0; |
1196 | } | |
94b53b77 | 1197 | pr_err("failed to RUN_ARRAY %s: %s\n", mddev, strerror(errno)); |
ddc1b11f N |
1198 | |
1199 | if (!enough(content->array.level, content->array.raid_disks, | |
1200 | content->array.layout, 1, avail)) | |
7a862a02 | 1201 | pr_err("Not enough devices to start the array.\n"); |
ddc1b11f N |
1202 | else if (!enough(content->array.level, |
1203 | content->array.raid_disks, | |
94b53b77 | 1204 | content->array.layout, clean, avail)) |
7a862a02 | 1205 | pr_err("Not enough devices to start the array while not clean - consider --force.\n"); |
ddc1b11f N |
1206 | |
1207 | return 1; | |
1208 | } | |
1209 | if (c->runstop == -1) { | |
1210 | pr_err("%s assembled from %d drive%s", | |
94b53b77 | 1211 | mddev, okcnt, okcnt == 1 ? "" : "s"); |
ddc1b11f | 1212 | if (okcnt != (unsigned)content->array.raid_disks) |
94b53b77 JS |
1213 | fprintf(stderr, " (out of %d)", |
1214 | content->array.raid_disks); | |
ddc1b11f N |
1215 | fprintf(stderr, ", but not started.\n"); |
1216 | return 2; | |
1217 | } | |
1218 | if (c->verbose >= -1) { | |
94b53b77 JS |
1219 | pr_err("%s assembled from %d drive%s", |
1220 | mddev, okcnt, okcnt == 1 ? "" : "s"); | |
ddc1b11f | 1221 | if (rebuilding_cnt) |
94b53b77 JS |
1222 | fprintf(stderr, "%s %d rebuilding", |
1223 | sparecnt ? "," : " and", rebuilding_cnt); | |
ddc1b11f | 1224 | if (sparecnt) |
94b53b77 JS |
1225 | fprintf(stderr, " and %d spare%s", sparecnt, |
1226 | sparecnt == 1 ? "" : "s"); | |
ddc1b11f N |
1227 | if (!enough(content->array.level, content->array.raid_disks, |
1228 | content->array.layout, 1, avail)) | |
1229 | fprintf(stderr, " - not enough to start the array.\n"); | |
1230 | else if (!enough(content->array.level, | |
1231 | content->array.raid_disks, | |
94b53b77 | 1232 | content->array.layout, clean, avail)) |
7a862a02 | 1233 | fprintf(stderr, " - not enough to start the array while not clean - consider --force.\n"); |
ddc1b11f N |
1234 | else { |
1235 | if (req_cnt == (unsigned)content->array.raid_disks) | |
94b53b77 JS |
1236 | fprintf(stderr, " - need all %d to start it", |
1237 | req_cnt); | |
ddc1b11f | 1238 | else |
aacb2f81 | 1239 | fprintf(stderr, " - need %d to start", req_cnt); |
ddc1b11f N |
1240 | fprintf(stderr, " (use --run to insist).\n"); |
1241 | } | |
1242 | } | |
1243 | return 1; | |
1244 | } | |
1245 | ||
95425a89 N |
1246 | int Assemble(struct supertype *st, char *mddev, |
1247 | struct mddev_ident *ident, | |
1248 | struct mddev_dev *devlist, | |
1249 | struct context *c) | |
1250 | { | |
1251 | /* | |
1252 | * The task of Assemble is to find a collection of | |
1253 | * devices that should (according to their superblocks) | |
1254 | * form an array, and to give this collection to the MD driver. | |
1255 | * In Linux-2.4 and later, this involves submitting a | |
1256 | * SET_ARRAY_INFO ioctl with no arg - to prepare | |
1257 | * the array - and then submit a number of | |
1258 | * ADD_NEW_DISK ioctls to add disks into | |
1259 | * the array. Finally RUN_ARRAY might | |
1260 | * be submitted to start the array. | |
1261 | * | |
1262 | * Much of the work of Assemble is in finding and/or | |
1263 | * checking the disks to make sure they look right. | |
1264 | * | |
1265 | * If mddev is not set, then scan must be set and we | |
1266 | * read through the config file for dev+uuid mapping | |
1267 | * We recurse, setting mddev, for each device that | |
1268 | * - isn't running | |
1269 | * - has a valid uuid (or any uuid if !uuidset) | |
1270 | * | |
1271 | * If mddev is set, we try to determine state of md. | |
1272 | * check version - must be at least 0.90.0 | |
1273 | * check kernel version. must be at least 2.4. | |
1274 | * If not, we can possibly fall back on START_ARRAY | |
1275 | * Try to GET_ARRAY_INFO. | |
1276 | * If possible, give up | |
1277 | * If not, try to STOP_ARRAY just to make sure | |
1278 | * | |
1279 | * If !uuidset and scan, look in conf-file for uuid | |
1280 | * If not found, give up | |
1281 | * If !devlist and scan and uuidset, get list of devs from conf-file | |
1282 | * | |
1283 | * For each device: | |
1284 | * Check superblock - discard if bad | |
1285 | * Check uuid (set if we don't have one) - discard if no match | |
1286 | * Check superblock similarity if we have a superblock - discard if different | |
1287 | * Record events, devicenum | |
1288 | * This should give us a list of devices for the array | |
1289 | * We should collect the most recent event number | |
1290 | * | |
1291 | * Count disks with recent enough event count | |
1292 | * While force && !enough disks | |
1293 | * Choose newest rejected disks, update event count | |
1294 | * mark clean and rewrite superblock | |
1295 | * If recent kernel: | |
1296 | * SET_ARRAY_INFO | |
1297 | * foreach device with recent events : ADD_NEW_DISK | |
1298 | * if runstop == 1 || "enough" disks and runstop==0 -> RUN_ARRAY | |
1299 | * If old kernel: | |
1300 | * Check the device numbers in superblock are right | |
1301 | * update superblock if any changes | |
1302 | * START_ARRAY | |
1303 | * | |
1304 | */ | |
6f4dbdc4 | 1305 | int rv; |
95425a89 N |
1306 | int mdfd; |
1307 | int clean; | |
1308 | int auto_assem = (mddev == NULL && !ident->uuid_set && | |
1309 | ident->super_minor == UnSet && ident->name[0] == 0 | |
1310 | && (ident->container == NULL || ident->member == NULL)); | |
2c355c22 | 1311 | struct devs *devices; |
95425a89 N |
1312 | char *devmap; |
1313 | int *best = NULL; /* indexed by raid_disk */ | |
1314 | int bestcnt = 0; | |
2c355c22 | 1315 | int devcnt; |
69a48116 | 1316 | unsigned int okcnt, sparecnt, rebuilding_cnt, replcnt, journalcnt; |
dbfbca43 | 1317 | int journal_clean = 0; |
95425a89 | 1318 | int i; |
8cde842b | 1319 | int was_forced = 0; |
95425a89 N |
1320 | int most_recent = 0; |
1321 | int chosen_drive; | |
1322 | int change = 0; | |
1323 | int inargv = 0; | |
95425a89 N |
1324 | int start_partial_ok = (c->runstop >= 0) && |
1325 | (c->force || devlist==NULL || auto_assem); | |
1326 | int num_devs; | |
1327 | struct mddev_dev *tmpdev; | |
1328 | struct mdinfo info; | |
1329 | struct mdinfo *content = NULL; | |
1330 | struct mdinfo *pre_exist = NULL; | |
1331 | char *avail; | |
95425a89 N |
1332 | char *name = NULL; |
1333 | char chosen_name[1024]; | |
1334 | struct map_ent *map = NULL; | |
1335 | struct map_ent *mp; | |
1336 | ||
95425a89 N |
1337 | /* |
1338 | * If any subdevs are listed, then any that don't | |
1339 | * match ident are discarded. Remainder must all match and | |
1340 | * become the array. | |
1341 | * If no subdevs, then we scan all devices in the config file, but | |
1342 | * there must be something in the identity | |
1343 | */ | |
1344 | ||
1345 | if (!devlist && | |
1346 | ident->uuid_set == 0 && | |
1347 | (ident->super_minor < 0 || ident->super_minor == UnSet) && | |
1348 | ident->name[0] == 0 && | |
1349 | (ident->container == NULL || ident->member == NULL) && | |
1350 | ident->devices == NULL) { | |
1351 | pr_err("No identity information available for %s - cannot assemble.\n", | |
1352 | mddev ? mddev : "further assembly"); | |
1353 | return 1; | |
1354 | } | |
1355 | ||
1356 | if (devlist == NULL) | |
1357 | devlist = conf_get_devs(); | |
1358 | else if (mddev) | |
1359 | inargv = 1; | |
1360 | ||
79f9f56d | 1361 | try_again: |
95425a89 N |
1362 | /* We come back here when doing auto-assembly and attempting some |
1363 | * set of devices failed. Those are now marked as ->used==2 and | |
1364 | * we ignore them and try again | |
1365 | */ | |
1366 | if (!st && ident->st) | |
1367 | st = ident->st; | |
1368 | if (c->verbose>0) | |
1369 | pr_err("looking for devices for %s\n", | |
1370 | mddev ? mddev : "further assembly"); | |
1371 | ||
1372 | content = &info; | |
9f2e55a4 | 1373 | if (st && c->force) |
cb8f6859 | 1374 | st->ignore_hw_compat = 1; |
95425a89 N |
1375 | num_devs = select_devices(devlist, ident, &st, &content, c, |
1376 | inargv, auto_assem); | |
1377 | if (num_devs < 0) | |
1378 | return 1; | |
1011e834 | 1379 | |
98dbd966 | 1380 | if (!st || !st->sb || !content) |
c30e5369 N |
1381 | return 2; |
1382 | ||
0431869c N |
1383 | /* We have a full set of devices - we now need to find the |
1384 | * array device. | |
1385 | * However there is a risk that we are racing with "mdadm -I" | |
1386 | * and the array is already partially assembled - we will have | |
1387 | * rejected any devices already in this address. | |
1388 | * So we take a lock on the map file - to prevent further races - | |
1389 | * and look for the uuid in there. If found and the array is | |
1390 | * active, we abort. If found and the array is not active | |
1391 | * we commit to that md device and add all the contained devices | |
1392 | * to our list. We flag them so that we don't try to re-add, | |
1393 | * but can remove if they turn out to not be wanted. | |
1394 | */ | |
1395 | if (map_lock(&map)) | |
1396 | pr_err("failed to get exclusive lock on mapfile - continue anyway...\n"); | |
ec6db5ba N |
1397 | if (c->update && strcmp(c->update,"uuid") == 0) |
1398 | mp = NULL; | |
1399 | else | |
1400 | mp = map_by_uuid(&map, content->uuid); | |
0431869c N |
1401 | if (mp) { |
1402 | struct mdinfo *dv; | |
1403 | /* array already exists. */ | |
4dd2df09 | 1404 | pre_exist = sysfs_read(-1, mp->devnm, GET_LEVEL|GET_DEVS); |
0431869c N |
1405 | if (pre_exist->array.level != UnSet) { |
1406 | pr_err("Found some drive for an array that is already active: %s\n", | |
1407 | mp->path); | |
1408 | pr_err("giving up.\n"); | |
1409 | return 1; | |
1410 | } | |
1411 | for (dv = pre_exist->devs; dv; dv = dv->next) { | |
1412 | /* We want to add this device to our list, | |
1413 | * but it could already be there if "mdadm -I" | |
1414 | * started *after* we checked for O_EXCL. | |
1415 | * If we add it to the top of the list | |
1416 | * it will be preferred over later copies. | |
1417 | */ | |
1418 | struct mddev_dev *newdev; | |
1419 | char *devname = map_dev(dv->disk.major, | |
1420 | dv->disk.minor, | |
1421 | 0); | |
1422 | if (!devname) | |
1423 | continue; | |
1424 | newdev = xmalloc(sizeof(*newdev)); | |
1425 | newdev->devname = devname; | |
1426 | newdev->disposition = 'I'; | |
1427 | newdev->used = 1; | |
1428 | newdev->next = devlist; | |
1429 | devlist = newdev; | |
1430 | num_devs++; | |
1431 | } | |
1432 | strcpy(chosen_name, mp->path); | |
1433 | if (c->verbose > 0 || mddev == NULL || | |
1434 | strcmp(mddev, chosen_name) != 0) | |
1435 | pr_err("Merging with already-assembled %s\n", | |
1436 | chosen_name); | |
4dd2df09 | 1437 | mdfd = open_dev_excl(mp->devnm); |
0431869c N |
1438 | } else { |
1439 | int trustworthy = FOREIGN; | |
1440 | name = content->name; | |
1441 | switch (st->ss->match_home(st, c->homehost) | |
1442 | ?: st->ss->match_home(st, "any")) { | |
1443 | case 1: | |
1444 | trustworthy = LOCAL; | |
1445 | name = strchr(content->name, ':'); | |
1446 | if (name) | |
1447 | name++; | |
1448 | else | |
1449 | name = content->name; | |
1450 | break; | |
1451 | } | |
1452 | if (!auto_assem) | |
1453 | /* If the array is listed in mdadm.conf or on | |
1454 | * command line, then we trust the name | |
1455 | * even if the array doesn't look local | |
1456 | */ | |
1457 | trustworthy = LOCAL; | |
ac2ecf55 | 1458 | |
0431869c N |
1459 | if (name[0] == 0 && |
1460 | content->array.level == LEVEL_CONTAINER) { | |
1461 | name = content->text_version; | |
1462 | trustworthy = METADATA; | |
1463 | } | |
0ac91628 | 1464 | |
0431869c N |
1465 | if (name[0] && trustworthy != LOCAL && |
1466 | ! c->require_homehost && | |
1467 | conf_name_is_free(name)) | |
1468 | trustworthy = LOCAL; | |
0ac91628 | 1469 | |
0431869c N |
1470 | if (trustworthy == LOCAL && |
1471 | strchr(name, ':')) | |
1472 | /* Ignore 'host:' prefix of name */ | |
1473 | name = strchr(name, ':')+1; | |
7cdc0872 | 1474 | |
0431869c | 1475 | mdfd = create_mddev(mddev, name, ident->autof, trustworthy, |
cd6cbb08 | 1476 | chosen_name, 0); |
0431869c | 1477 | } |
c30e5369 N |
1478 | if (mdfd < 0) { |
1479 | st->ss->free_super(st); | |
c30e5369 | 1480 | if (auto_assem) |
60e1bc1a | 1481 | goto try_again; |
c30e5369 N |
1482 | return 1; |
1483 | } | |
a04d5763 | 1484 | mddev = chosen_name; |
0431869c | 1485 | if (pre_exist == NULL) { |
4dd2df09 | 1486 | if (mddev_busy(fd2devnm(mdfd))) { |
0431869c N |
1487 | pr_err("%s already active, cannot restart it!\n", |
1488 | mddev); | |
1489 | for (tmpdev = devlist ; | |
1490 | tmpdev && tmpdev->used != 1; | |
1491 | tmpdev = tmpdev->next) | |
1492 | ; | |
1493 | if (tmpdev && auto_assem) | |
1494 | pr_err("%s needed for %s...\n", | |
1495 | mddev, tmpdev->devname); | |
1496 | close(mdfd); | |
1497 | mdfd = -3; | |
1498 | st->ss->free_super(st); | |
1499 | if (auto_assem) | |
1500 | goto try_again; | |
1501 | return 1; | |
1502 | } | |
1503 | /* just incase it was started but has no content */ | |
1504 | ioctl(mdfd, STOP_ARRAY, NULL); | |
8a46fe84 NB |
1505 | } |
1506 | ||
9008ed1c N |
1507 | if (content != &info) { |
1508 | /* This is a member of a container. Try starting the array. */ | |
588bebfc | 1509 | int err; |
11b6d91d | 1510 | err = assemble_container_content(st, mdfd, content, c, |
9ca39acb | 1511 | chosen_name, NULL); |
588bebfc | 1512 | close(mdfd); |
588bebfc | 1513 | return err; |
9008ed1c | 1514 | } |
32141c17 | 1515 | |
811e6cbe | 1516 | /* Ok, no bad inconsistancy, we can try updating etc */ |
503975b9 N |
1517 | devices = xcalloc(num_devs, sizeof(*devices)); |
1518 | devmap = xcalloc(num_devs, content->array.raid_disks); | |
df842e69 | 1519 | devcnt = load_devices(devices, devmap, ident, &st, devlist, |
2c355c22 N |
1520 | c, content, mdfd, mddev, |
1521 | &most_recent, &bestcnt, &best, inargv); | |
1522 | if (devcnt < 0) | |
1523 | return 1; | |
4b1ac34b | 1524 | |
64c4757e | 1525 | if (devcnt == 0) { |
e7b84f9d | 1526 | pr_err("no devices found for %s\n", |
79f9f56d | 1527 | mddev); |
3d2b16e7 NB |
1528 | if (st) |
1529 | st->ss->free_super(st); | |
7f91af49 | 1530 | close(mdfd); |
d7f7ebb7 | 1531 | free(devices); |
02e7c5b7 | 1532 | free(devmap); |
64c4757e NB |
1533 | return 1; |
1534 | } | |
4b1ac34b | 1535 | |
4977146a | 1536 | if (c->update && strcmp(c->update, "byteorder")==0) |
3d2b16e7 NB |
1537 | st->minor_version = 90; |
1538 | ||
a5d85af7 | 1539 | st->ss->getinfo_super(st, content, NULL); |
98dbd966 | 1540 | clean = content->array.state & 1; |
4b1ac34b | 1541 | |
64c4757e NB |
1542 | /* now we have some devices that might be suitable. |
1543 | * I wonder how many | |
1544 | */ | |
503975b9 | 1545 | avail = xcalloc(content->array.raid_disks, 1); |
64c4757e | 1546 | okcnt = 0; |
aacb2f81 | 1547 | replcnt = 0; |
52826846 | 1548 | sparecnt=0; |
69a48116 | 1549 | journalcnt=0; |
1ff98339 | 1550 | rebuilding_cnt=0; |
f21e18ca | 1551 | for (i=0; i< bestcnt; i++) { |
64c4757e | 1552 | int j = best[i]; |
ee04451c NB |
1553 | int event_margin = 1; /* always allow a difference of '1' |
1554 | * like the kernel does | |
1555 | */ | |
64c4757e | 1556 | if (j < 0) continue; |
d013a55e NB |
1557 | /* note: we ignore error flags in multipath arrays |
1558 | * as they don't make sense | |
1559 | */ | |
69a48116 SL |
1560 | if (content->array.level != LEVEL_MULTIPATH) { |
1561 | if (devices[j].i.disk.state & (1<<MD_DISK_JOURNAL)) { | |
051f3265 | 1562 | if (content->journal_device_required) |
69a48116 SL |
1563 | journalcnt++; |
1564 | else /* unexpected journal, mark as faulty */ | |
1565 | devices[j].i.disk.state |= (1<<MD_DISK_FAULTY); | |
1566 | } else if (!(devices[j].i.disk.state & (1<<MD_DISK_ACTIVE))) { | |
213ee40b | 1567 | if (!(devices[j].i.disk.state |
ed7fc6b4 AC |
1568 | & (1<<MD_DISK_FAULTY))) { |
1569 | devices[j].uptodate = 1; | |
aa88f531 | 1570 | sparecnt++; |
ed7fc6b4 | 1571 | } |
d013a55e | 1572 | continue; |
aa88f531 | 1573 | } |
69a48116 | 1574 | } |
de5a472e | 1575 | /* If this device thinks that 'most_recent' has failed, then |
02e7c5b7 N |
1576 | * we must reject this device. |
1577 | */ | |
eb20ecf1 | 1578 | if (j != most_recent && !c->force && |
02e7c5b7 N |
1579 | content->array.raid_disks > 0 && |
1580 | devices[most_recent].i.disk.raid_disk >= 0 && | |
1581 | devmap[j * content->array.raid_disks + devices[most_recent].i.disk.raid_disk] == 0) { | |
4977146a | 1582 | if (c->verbose > -1) |
e7b84f9d | 1583 | pr_err("ignoring %s as it reports %s as failed\n", |
79f9f56d | 1584 | devices[j].devname, devices[most_recent].devname); |
02e7c5b7 N |
1585 | best[i] = -1; |
1586 | continue; | |
1587 | } | |
f80057ae N |
1588 | /* Require event counter to be same as, or just less than, |
1589 | * most recent. If it is bigger, it must be a stray spare and | |
1590 | * should be ignored. | |
1591 | */ | |
213ee40b | 1592 | if (devices[j].i.events+event_margin >= |
f80057ae N |
1593 | devices[most_recent].i.events && |
1594 | devices[j].i.events <= | |
1595 | devices[most_recent].i.events | |
1596 | ) { | |
64c4757e | 1597 | devices[j].uptodate = 1; |
69a48116 | 1598 | if (devices[j].i.disk.state & (1<<MD_DISK_JOURNAL)) |
dbfbca43 | 1599 | journal_clean = 1; |
aacb2f81 | 1600 | if (i < content->array.raid_disks * 2) { |
dcc4210f DW |
1601 | if (devices[j].i.recovery_start == MaxSector || |
1602 | (content->reshape_active && | |
d316dba7 | 1603 | i >= content->array.raid_disks - content->delta_disks)) { |
aacb2f81 N |
1604 | if (!avail[i/2]) { |
1605 | okcnt++; | |
1606 | avail[i/2]=1; | |
1607 | } else | |
1608 | replcnt++; | |
1ff98339 N |
1609 | } else |
1610 | rebuilding_cnt++; | |
69a48116 | 1611 | } else if (devices[j].i.disk.raid_disk != MD_DISK_ROLE_JOURNAL) |
52826846 | 1612 | sparecnt++; |
64c4757e NB |
1613 | } |
1614 | } | |
02e7c5b7 | 1615 | free(devmap); |
8cde842b N |
1616 | if (c->force) { |
1617 | int force_ok = force_array(content, devices, best, bestcnt, | |
1618 | avail, most_recent, st, c); | |
1619 | okcnt += force_ok; | |
1620 | if (force_ok) | |
1621 | was_forced = 1; | |
1622 | } | |
52826846 NB |
1623 | /* Now we want to look at the superblock which the kernel will base things on |
1624 | * and compare the devices that we think are working with the devices that the | |
1625 | * superblock thinks are working. | |
1626 | * If there are differences and --force is given, then update this chosen | |
1627 | * superblock. | |
1628 | */ | |
cd29a5c8 | 1629 | chosen_drive = -1; |
3da92f27 | 1630 | st->ss->free_super(st); |
f81a2b56 | 1631 | for (i=0; chosen_drive < 0 && i<bestcnt; i+=2) { |
52826846 NB |
1632 | int j = best[i]; |
1633 | int fd; | |
4b1ac34b | 1634 | |
52826846 NB |
1635 | if (j<0) |
1636 | continue; | |
1637 | if (!devices[j].uptodate) | |
1638 | continue; | |
a28232b8 N |
1639 | if (devices[j].i.events < devices[most_recent].i.events) |
1640 | continue; | |
52826846 | 1641 | chosen_drive = j; |
0431869c N |
1642 | if ((fd=dev_open(devices[j].devname, |
1643 | devices[j].included ? O_RDONLY | |
1644 | : (O_RDONLY|O_EXCL)))< 0) { | |
e7b84f9d | 1645 | pr_err("Cannot open %s: %s\n", |
79f9f56d | 1646 | devices[j].devname, strerror(errno)); |
7f91af49 | 1647 | close(mdfd); |
d7f7ebb7 | 1648 | free(devices); |
52826846 NB |
1649 | return 1; |
1650 | } | |
3da92f27 | 1651 | if (st->ss->load_super(st,fd, NULL)) { |
52826846 | 1652 | close(fd); |
e7b84f9d | 1653 | pr_err("RAID superblock has disappeared from %s\n", |
79f9f56d | 1654 | devices[j].devname); |
7f91af49 | 1655 | close(mdfd); |
d7f7ebb7 | 1656 | free(devices); |
52826846 NB |
1657 | return 1; |
1658 | } | |
1659 | close(fd); | |
1660 | } | |
3da92f27 | 1661 | if (st->sb == NULL) { |
e7b84f9d | 1662 | pr_err("No suitable drives found for %s\n", mddev); |
7f91af49 | 1663 | close(mdfd); |
d7f7ebb7 | 1664 | free(devices); |
4b1ac34b NB |
1665 | return 1; |
1666 | } | |
a5d85af7 | 1667 | st->ss->getinfo_super(st, content, NULL); |
dae13137 JS |
1668 | if (sysfs_init(content, mdfd, NULL)) { |
1669 | pr_err("Unable to initialize sysfs\n"); | |
1670 | close(mdfd); | |
1671 | free(devices); | |
1672 | return 1; | |
1673 | } | |
32141c17 | 1674 | |
dbfbca43 SL |
1675 | /* after reload context, store journal_clean in context */ |
1676 | content->journal_clean = journal_clean; | |
56eedc1a | 1677 | for (i=0; i<bestcnt; i++) { |
52826846 | 1678 | int j = best[i]; |
98c6faba | 1679 | unsigned int desired_state; |
11a3e71d | 1680 | |
69a48116 SL |
1681 | if (devices[j].i.disk.raid_disk == MD_DISK_ROLE_JOURNAL) |
1682 | desired_state = (1<<MD_DISK_JOURNAL); | |
1683 | else if (i >= content->array.raid_disks * 2) | |
11a3e71d | 1684 | desired_state = 0; |
aacb2f81 N |
1685 | else if (i & 1) |
1686 | desired_state = (1<<MD_DISK_ACTIVE) | (1<<MD_DISK_REPLACEMENT); | |
1687 | else | |
1688 | desired_state = (1<<MD_DISK_ACTIVE) | (1<<MD_DISK_SYNC); | |
11a3e71d | 1689 | |
52826846 NB |
1690 | if (j<0) |
1691 | continue; | |
1692 | if (!devices[j].uptodate) | |
1693 | continue; | |
4b1ac34b | 1694 | |
213ee40b | 1695 | devices[j].i.disk.state = desired_state; |
4e9a6ff7 N |
1696 | if (!(devices[j].i.array.state & 1)) |
1697 | clean = 0; | |
213ee40b NB |
1698 | |
1699 | if (st->ss->update_super(st, &devices[j].i, "assemble", NULL, | |
4977146a N |
1700 | c->verbose, 0, NULL)) { |
1701 | if (c->force) { | |
1702 | if (c->verbose >= 0) | |
e7b84f9d | 1703 | pr_err("clearing FAULTY flag for device %d in %s for %s\n", |
79f9f56d | 1704 | j, mddev, devices[j].devname); |
4b1ac34b | 1705 | change = 1; |
52826846 | 1706 | } else { |
4977146a | 1707 | if (c->verbose >= -1) |
e7b84f9d | 1708 | pr_err("device %d in %s has wrong state in superblock, but %s seems ok\n", |
79f9f56d | 1709 | i, mddev, devices[j].devname); |
52826846 NB |
1710 | } |
1711 | } | |
4b1ac34b | 1712 | #if 0 |
213ee40b | 1713 | if (!(super.disks[i].i.disk.state & (1 << MD_DISK_FAULTY))) { |
e7b84f9d | 1714 | pr_err("devices %d of %s is not marked FAULTY in superblock, but cannot be found\n", |
79f9f56d | 1715 | i, mddev); |
52826846 | 1716 | } |
4b1ac34b | 1717 | #endif |
52826846 | 1718 | } |
4977146a | 1719 | if (c->force && !clean && |
98dbd966 DW |
1720 | !enough(content->array.level, content->array.raid_disks, |
1721 | content->array.layout, clean, | |
de5a472e | 1722 | avail)) { |
98dbd966 | 1723 | change += st->ss->update_super(st, content, "force-array", |
6f4dbdc4 | 1724 | devices[chosen_drive].devname, c->verbose, |
67a8c82d | 1725 | 0, NULL); |
8cde842b | 1726 | was_forced = 1; |
583315d9 | 1727 | clean = 1; |
d013a55e | 1728 | } |
52826846 | 1729 | |
4b1ac34b | 1730 | if (change) { |
52826846 | 1731 | int fd; |
0431869c N |
1732 | fd = dev_open(devices[chosen_drive].devname, |
1733 | devices[chosen_drive].included ? | |
1734 | O_RDWR : (O_RDWR|O_EXCL)); | |
52826846 | 1735 | if (fd < 0) { |
e7b84f9d | 1736 | pr_err("Could not open %s for write - cannot Assemble array.\n", |
79f9f56d | 1737 | devices[chosen_drive].devname); |
7f91af49 | 1738 | close(mdfd); |
d7f7ebb7 | 1739 | free(devices); |
52826846 NB |
1740 | return 1; |
1741 | } | |
3da92f27 | 1742 | if (st->ss->store_super(st, fd)) { |
52826846 | 1743 | close(fd); |
e7b84f9d | 1744 | pr_err("Could not re-write superblock on %s\n", |
79f9f56d | 1745 | devices[chosen_drive].devname); |
7f91af49 | 1746 | close(mdfd); |
d7f7ebb7 | 1747 | free(devices); |
52826846 NB |
1748 | return 1; |
1749 | } | |
4977146a | 1750 | if (c->verbose >= 0) |
e7b84f9d | 1751 | pr_err("Marking array %s as 'clean'\n", |
79f9f56d | 1752 | mddev); |
52826846 | 1753 | close(fd); |
52826846 NB |
1754 | } |
1755 | ||
353632d9 NB |
1756 | /* If we are in the middle of a reshape we may need to restore saved data |
1757 | * that was moved aside due to the reshape overwriting live data | |
1758 | * The code of doing this lives in Grow.c | |
1759 | */ | |
5e88ab2e N |
1760 | if (content->reshape_active && |
1761 | !(content->reshape_active & RESHAPE_NO_BACKUP)) { | |
353632d9 | 1762 | int err = 0; |
503975b9 | 1763 | int *fdlist = xmalloc(sizeof(int)* bestcnt); |
4977146a | 1764 | if (c->verbose > 0) |
c34fef77 | 1765 | pr_err("%s has an active reshape - checking if critical section needs to be restored\n", |
79f9f56d | 1766 | chosen_name); |
54ded86f N |
1767 | if (!c->backup_file) |
1768 | c->backup_file = locate_backup(content->sys_name); | |
a7dec3fd | 1769 | enable_fds(bestcnt/2); |
5e9fd96f N |
1770 | for (i = 0; i < bestcnt/2; i++) { |
1771 | int j = best[i*2]; | |
353632d9 | 1772 | if (j >= 0) { |
0431869c N |
1773 | fdlist[i] = dev_open(devices[j].devname, |
1774 | devices[j].included | |
1775 | ? O_RDWR : (O_RDWR|O_EXCL)); | |
353632d9 | 1776 | if (fdlist[i] < 0) { |
e7b84f9d | 1777 | pr_err("Could not open %s for write - cannot Assemble array.\n", |
79f9f56d | 1778 | devices[j].devname); |
353632d9 NB |
1779 | err = 1; |
1780 | break; | |
1781 | } | |
1782 | } else | |
1783 | fdlist[i] = -1; | |
1784 | } | |
87f26d14 | 1785 | if (!err) { |
ba53ea59 AK |
1786 | if (st->ss->external && st->ss->recover_backup) |
1787 | err = st->ss->recover_backup(st, content); | |
1788 | else | |
5e9fd96f | 1789 | err = Grow_restart(st, content, fdlist, bestcnt/2, |
4977146a N |
1790 | c->backup_file, c->verbose > 0); |
1791 | if (err && c->invalid_backup) { | |
1792 | if (c->verbose > 0) | |
7a862a02 | 1793 | pr_err("continuing without restoring backup\n"); |
87f26d14 N |
1794 | err = 0; |
1795 | } | |
1796 | } | |
353632d9 NB |
1797 | while (i>0) { |
1798 | i--; | |
1799 | if (fdlist[i]>=0) close(fdlist[i]); | |
1800 | } | |
56dcaa6b | 1801 | free(fdlist); |
353632d9 | 1802 | if (err) { |
e7b84f9d | 1803 | pr_err("Failed to restore critical section for reshape, sorry.\n"); |
4977146a | 1804 | if (c->backup_file == NULL) |
e7b84f9d | 1805 | cont_err("Possibly you needed to specify the --backup-file\n"); |
7f91af49 | 1806 | close(mdfd); |
d7f7ebb7 | 1807 | free(devices); |
353632d9 NB |
1808 | return err; |
1809 | } | |
1810 | } | |
aa88f531 | 1811 | |
64c4757e | 1812 | /* Almost ready to actually *do* something */ |
6f4dbdc4 N |
1813 | /* First, fill in the map, so that udev can find our name |
1814 | * as soon as we become active. | |
1815 | */ | |
afa368f4 N |
1816 | if (c->update && strcmp(c->update, "metadata")==0) { |
1817 | content->array.major_version = 1; | |
1818 | content->array.minor_version = 0; | |
1819 | strcpy(content->text_version, "1.0"); | |
1820 | } | |
1821 | ||
4dd2df09 | 1822 | map_update(&map, fd2devnm(mdfd), content->text_version, |
6f4dbdc4 N |
1823 | content->uuid, chosen_name); |
1824 | ||
1825 | rv = start_array(mdfd, mddev, content, | |
1826 | st, ident, best, bestcnt, | |
1827 | chosen_drive, devices, okcnt, sparecnt, | |
69a48116 | 1828 | rebuilding_cnt, journalcnt, |
6f4dbdc4 | 1829 | c, |
71417de6 N |
1830 | clean, avail, start_partial_ok, |
1831 | pre_exist != NULL, | |
051f3265 | 1832 | was_forced); |
6f4dbdc4 N |
1833 | if (rv == 1 && !pre_exist) |
1834 | ioctl(mdfd, STOP_ARRAY, NULL); | |
6f4dbdc4 N |
1835 | free(devices); |
1836 | map_unlock(&map); | |
1837 | if (rv == 0) { | |
1838 | wait_for(chosen_name, mdfd); | |
b20c8a50 | 1839 | close(mdfd); |
6f4dbdc4 N |
1840 | if (auto_assem) { |
1841 | int usecs = 1; | |
1842 | /* There is a nasty race with 'mdadm --monitor'. | |
1843 | * If it opens this device before we close it, | |
1844 | * it gets an incomplete open on which IO | |
1845 | * doesn't work and the capacity is | |
1846 | * wrong. | |
1847 | * If we reopen (to check for layered devices) | |
1848 | * before --monitor closes, we loose. | |
1849 | * | |
1850 | * So: wait upto 1 second for there to be | |
1851 | * a non-zero capacity. | |
1852 | */ | |
1853 | while (usecs < 1000) { | |
1854 | mdfd = open(mddev, O_RDONLY); | |
1855 | if (mdfd >= 0) { | |
1856 | unsigned long long size; | |
1857 | if (get_dev_size(mdfd, NULL, &size) && | |
1858 | size > 0) | |
1859 | break; | |
1860 | close(mdfd); | |
589395d6 | 1861 | } |
6f4dbdc4 N |
1862 | usleep(usecs); |
1863 | usecs <<= 1; | |
dab6685f | 1864 | } |
aa88f531 | 1865 | } |
b20c8a50 N |
1866 | } else |
1867 | close(mdfd); | |
1868 | ||
6f4dbdc4 N |
1869 | /* '2' means 'OK, but not started yet' */ |
1870 | return rv == 2 ? 0 : rv; | |
64c4757e | 1871 | } |
6234c63c | 1872 | |
6234c63c | 1873 | int assemble_container_content(struct supertype *st, int mdfd, |
11b6d91d | 1874 | struct mdinfo *content, struct context *c, |
9ca39acb | 1875 | char *chosen_name, int *result) |
6234c63c | 1876 | { |
02b70e83 | 1877 | struct mdinfo *dev, *sra, *dev2; |
6234c63c | 1878 | int working = 0, preexist = 0; |
882029c8 | 1879 | int expansion = 0; |
7af03341 | 1880 | int old_raid_disks; |
4aecb54a | 1881 | int start_reshape; |
0a8e239c | 1882 | char *avail; |
c1736844 | 1883 | int err; |
6234c63c | 1884 | |
dae13137 JS |
1885 | if (sysfs_init(content, mdfd, NULL)) { |
1886 | pr_err("Unable to initialize sysfs\n"); | |
1887 | return 1; | |
1888 | } | |
6234c63c | 1889 | |
02b70e83 | 1890 | sra = sysfs_read(mdfd, NULL, GET_VERSION|GET_DEVS); |
0ea8f5b1 N |
1891 | if (sra == NULL || strcmp(sra->text_version, content->text_version) != 0) { |
1892 | if (content->array.major_version == -1 && | |
1893 | content->array.minor_version == -2 && | |
11b6d91d | 1894 | c->readonly && |
0ea8f5b1 N |
1895 | content->text_version[0] == '/') |
1896 | content->text_version[0] = '-'; | |
b6e60be6 | 1897 | if (sysfs_set_array(content, 9003) != 0) { |
30e19bf8 | 1898 | sysfs_free(sra); |
6234c63c | 1899 | return 1; |
22472ee1 | 1900 | } |
0ea8f5b1 | 1901 | } |
588bebfc | 1902 | |
4aecb54a AK |
1903 | /* There are two types of reshape: container wide or sub-array specific |
1904 | * Check if metadata requests blocking container wide reshapes | |
1905 | */ | |
1906 | start_reshape = (content->reshape_active && | |
79f9f56d N |
1907 | !((content->reshape_active == CONTAINER_RESHAPE) && |
1908 | (content->array.state & (1<<MD_SB_BLOCK_CONTAINER_RESHAPE)))); | |
4aecb54a AK |
1909 | |
1910 | /* Block subarray here if it is under reshape now | |
1911 | * Do not allow for any changes in this array | |
1912 | */ | |
1913 | if (st->ss->external && content->recovery_blocked && start_reshape) | |
b8063f07 AK |
1914 | block_subarray(content); |
1915 | ||
02b70e83 N |
1916 | for (dev2 = sra->devs; dev2; dev2 = dev2->next) { |
1917 | for (dev = content->devs; dev; dev = dev->next) | |
1918 | if (dev2->disk.major == dev->disk.major && | |
1919 | dev2->disk.minor == dev->disk.minor) | |
1920 | break; | |
1921 | if (dev) | |
1922 | continue; | |
1923 | /* Don't want this one any more */ | |
1924 | if (sysfs_set_str(sra, dev2, "slot", "none") < 0 && | |
1925 | errno == EBUSY) { | |
1926 | pr_err("Cannot remove old device %s: not updating %s\n", dev2->sys_name, sra->sys_name); | |
1927 | sysfs_free(sra); | |
1928 | return 1; | |
1929 | } | |
1930 | sysfs_set_str(sra, dev2, "state", "remove"); | |
1931 | } | |
7af03341 | 1932 | old_raid_disks = content->array.raid_disks - content->delta_disks; |
c1736844 N |
1933 | avail = xcalloc(content->array.raid_disks, 1); |
1934 | for (dev = content->devs; dev; dev = dev->next) { | |
1935 | if (dev->disk.raid_disk >= 0) | |
1936 | avail[dev->disk.raid_disk] = 1; | |
14032016 | 1937 | if (sysfs_add_disk(content, dev, 1) == 0) { |
7af03341 | 1938 | if (dev->disk.raid_disk >= old_raid_disks && |
14032016 AK |
1939 | content->reshape_active) |
1940 | expansion++; | |
1941 | else | |
1942 | working++; | |
1943 | } else if (errno == EEXIST) | |
6234c63c | 1944 | preexist++; |
c1736844 | 1945 | } |
02b70e83 | 1946 | sysfs_free(sra); |
c1736844 N |
1947 | if (working + expansion == 0 && c->runstop <= 0) { |
1948 | free(avail); | |
7cb2aa33 | 1949 | return 1;/* Nothing new, don't try to start */ |
c1736844 | 1950 | } |
0c79d8ca | 1951 | map_update(NULL, fd2devnm(mdfd), content->text_version, |
8b4e5ea9 N |
1952 | content->uuid, chosen_name); |
1953 | ||
2432ce9b AP |
1954 | if (content->consistency_policy == CONSISTENCY_POLICY_PPL && |
1955 | st->ss->validate_ppl) { | |
1956 | content->array.state |= 1; | |
1957 | err = 0; | |
1958 | ||
1959 | for (dev = content->devs; dev; dev = dev->next) { | |
1960 | int dfd; | |
1961 | char *devpath; | |
1962 | int ret; | |
1963 | ||
1964 | ret = st->ss->validate_ppl(st, content, dev); | |
1965 | if (ret == 0) | |
1966 | continue; | |
1967 | ||
1968 | if (ret < 0) { | |
1969 | err = 1; | |
1970 | break; | |
1971 | } | |
1972 | ||
1973 | if (!c->force) { | |
1974 | pr_err("%s contains invalid PPL - consider --force or --update-subarray with --update=no-ppl\n", | |
1975 | chosen_name); | |
1976 | content->array.state &= ~1; | |
1977 | avail[dev->disk.raid_disk] = 0; | |
1978 | break; | |
1979 | } | |
1980 | ||
1981 | /* have --force - overwrite the invalid ppl */ | |
1982 | devpath = map_dev(dev->disk.major, dev->disk.minor, 0); | |
1983 | dfd = dev_open(devpath, O_RDWR); | |
1984 | if (dfd < 0) { | |
1985 | pr_err("Failed to open %s\n", devpath); | |
1986 | err = 1; | |
1987 | break; | |
1988 | } | |
1989 | ||
1990 | err = st->ss->write_init_ppl(st, content, dfd); | |
1991 | close(dfd); | |
1992 | ||
1993 | if (err) | |
1994 | break; | |
1995 | } | |
1996 | ||
1997 | if (err) { | |
1998 | free(avail); | |
1999 | return err; | |
2000 | } | |
2001 | } | |
2002 | ||
c1736844 N |
2003 | if (enough(content->array.level, content->array.raid_disks, |
2004 | content->array.layout, content->array.state & 1, avail) == 0) { | |
9ca39acb N |
2005 | if (c->export && result) |
2006 | *result |= INCR_NO; | |
2007 | else if (c->verbose >= 0) { | |
c1736844 N |
2008 | pr_err("%s assembled with %d device%s", |
2009 | chosen_name, preexist + working, | |
2010 | preexist + working == 1 ? "":"s"); | |
6234c63c DW |
2011 | if (preexist) |
2012 | fprintf(stderr, " (%d new)", working); | |
c1736844 | 2013 | fprintf(stderr, " but not started\n"); |
6234c63c | 2014 | } |
c1736844 N |
2015 | free(avail); |
2016 | return 1; | |
2017 | } | |
2018 | free(avail); | |
2019 | ||
2020 | if (c->runstop <= 0 && | |
2021 | (working + preexist + expansion) < | |
2022 | content->array.working_disks) { | |
9ca39acb N |
2023 | if (c->export && result) |
2024 | *result |= INCR_UNSAFE; | |
2025 | else if (c->verbose >= 0) { | |
e7b84f9d N |
2026 | pr_err("%s assembled with %d device%s", |
2027 | chosen_name, preexist + working, | |
2028 | preexist + working == 1 ? "":"s"); | |
88716263 N |
2029 | if (preexist) |
2030 | fprintf(stderr, " (%d new)", working); | |
c1736844 | 2031 | fprintf(stderr, " but not safe to start\n"); |
88716263 | 2032 | } |
7cb2aa33 N |
2033 | return 1; |
2034 | } | |
c1736844 N |
2035 | |
2036 | ||
2037 | if (start_reshape) { | |
2038 | int spare = content->array.raid_disks + expansion; | |
2039 | if (restore_backup(st, content, | |
2040 | working, | |
54ded86f | 2041 | spare, &c->backup_file, c->verbose) == 1) |
c1736844 N |
2042 | return 1; |
2043 | ||
2044 | err = sysfs_set_str(content, NULL, | |
2045 | "array_state", "readonly"); | |
2046 | if (err) | |
2047 | return 1; | |
2048 | ||
2049 | if (st->ss->external) { | |
2050 | if (!mdmon_running(st->container_devnm)) | |
2051 | start_mdmon(st->container_devnm); | |
2052 | ping_monitor(st->container_devnm); | |
2053 | if (mdmon_running(st->container_devnm) && | |
2054 | st->update_tail == NULL) | |
2055 | st->update_tail = &st->updates; | |
2056 | } | |
2057 | ||
2058 | err = Grow_continue(mdfd, st, content, c->backup_file, | |
06e293d0 | 2059 | 0, c->freeze_reshape); |
c1736844 N |
2060 | } else switch(content->array.level) { |
2061 | case LEVEL_LINEAR: | |
2062 | case LEVEL_MULTIPATH: | |
2063 | case 0: | |
2064 | err = sysfs_set_str(content, NULL, "array_state", | |
2065 | c->readonly ? "readonly" : "active"); | |
2066 | break; | |
2067 | default: | |
2068 | err = sysfs_set_str(content, NULL, "array_state", | |
2069 | "readonly"); | |
2070 | /* start mdmon if needed. */ | |
2071 | if (!err) { | |
2072 | if (!mdmon_running(st->container_devnm)) | |
2073 | start_mdmon(st->container_devnm); | |
2074 | ping_monitor(st->container_devnm); | |
2075 | } | |
2076 | break; | |
2077 | } | |
2078 | if (!err) | |
2079 | sysfs_set_safemode(content, content->safe_mode_delay); | |
2080 | ||
2081 | /* Block subarray here if it is not reshaped now | |
2082 | * It has be blocked a little later to allow mdmon to switch in | |
2083 | * in to R/W state | |
2084 | */ | |
2085 | if (st->ss->external && content->recovery_blocked && | |
2086 | !start_reshape) | |
2087 | block_subarray(content); | |
2088 | ||
9ca39acb N |
2089 | if (c->export && result) { |
2090 | if (err) | |
2091 | *result |= INCR_NO; | |
2092 | else | |
2093 | *result |= INCR_YES; | |
2094 | } else if (c->verbose >= 0) { | |
c1736844 N |
2095 | if (err) |
2096 | pr_err("array %s now has %d device%s", | |
2097 | chosen_name, working + preexist, | |
2098 | working + preexist == 1 ? "":"s"); | |
2099 | else | |
2100 | pr_err("Started %s with %d device%s", | |
2101 | chosen_name, working + preexist, | |
2102 | working + preexist == 1 ? "":"s"); | |
2103 | if (preexist) | |
2104 | fprintf(stderr, " (%d new)", working); | |
2105 | if (expansion) | |
2106 | fprintf(stderr, " ( + %d for expansion)", | |
2107 | expansion); | |
2108 | fprintf(stderr, "\n"); | |
2109 | } | |
2110 | if (!err) | |
2111 | wait_for(chosen_name, mdfd); | |
2112 | return err; | |
2113 | /* FIXME should have an O_EXCL and wait for read-auto */ | |
6234c63c | 2114 | } |