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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 | * |
4f589ad0 | 4 | * Copyright (C) 2001-2006 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 | |
22 | * Email: <neilb@cse.unsw.edu.au> | |
23 | * Paper: Neil Brown | |
24 | * School of Computer Science and Engineering | |
25 | * The University of New South Wales | |
26 | * Sydney, 2052 | |
27 | * Australia | |
28 | */ | |
29 | ||
9a9dab36 | 30 | #include "mdadm.h" |
41a3b72a | 31 | #include <ctype.h> |
64c4757e | 32 | |
624920bb NB |
33 | static int name_matches(char *found, char *required, char *homehost) |
34 | { | |
35 | /* See if the name found matches the required name, possibly | |
36 | * prefixed with 'homehost' | |
37 | */ | |
38 | char fnd[33]; | |
39 | ||
40 | strncpy(fnd, found, 32); | |
41 | fnd[32] = 0; | |
42 | if (strcmp(found, required)==0) | |
43 | return 1; | |
44 | if (homehost) { | |
45 | int l = strlen(homehost); | |
46 | if (l < 32 && fnd[l] == ':' && | |
47 | strcmp(fnd+l+1, required)==0) | |
48 | return 1; | |
49 | } | |
50 | return 0; | |
51 | } | |
52 | ||
7f91af49 | 53 | int Assemble(struct supertype *st, char *mddev, |
8aec876d | 54 | mddev_ident_t ident, |
06b0d786 | 55 | mddev_dev_t devlist, char *backup_file, |
64c4757e | 56 | int readonly, int runstop, |
e5eac01f | 57 | char *update, char *homehost, |
64c4757e NB |
58 | int verbose, int force) |
59 | { | |
60 | /* | |
52826846 NB |
61 | * The task of Assemble is to find a collection of |
62 | * devices that should (according to their superblocks) | |
63 | * form an array, and to give this collection to the MD driver. | |
64 | * In Linux-2.4 and later, this involves submitting a | |
64c4757e NB |
65 | * SET_ARRAY_INFO ioctl with no arg - to prepare |
66 | * the array - and then submit a number of | |
67 | * ADD_NEW_DISK ioctls to add disks into | |
68 | * the array. Finally RUN_ARRAY might | |
69 | * be submitted to start the array. | |
70 | * | |
71 | * Much of the work of Assemble is in finding and/or | |
72 | * checking the disks to make sure they look right. | |
73 | * | |
4b1ac34b | 74 | * If mddev is not set, then scan must be set and we |
64c4757e NB |
75 | * read through the config file for dev+uuid mapping |
76 | * We recurse, setting mddev, for each device that | |
77 | * - isn't running | |
4b1ac34b | 78 | * - has a valid uuid (or any uuid if !uuidset) |
64c4757e NB |
79 | * |
80 | * If mddev is set, we try to determine state of md. | |
81 | * check version - must be at least 0.90.0 | |
82 | * check kernel version. must be at least 2.4. | |
83 | * If not, we can possibly fall back on START_ARRAY | |
84 | * Try to GET_ARRAY_INFO. | |
85 | * If possible, give up | |
86 | * If not, try to STOP_ARRAY just to make sure | |
87 | * | |
88 | * If !uuidset and scan, look in conf-file for uuid | |
89 | * If not found, give up | |
b8a8ccf9 | 90 | * If !devlist and scan and uuidset, get list of devs from conf-file |
64c4757e NB |
91 | * |
92 | * For each device: | |
93 | * Check superblock - discard if bad | |
94 | * Check uuid (set if we don't have one) - discard if no match | |
5787fa49 | 95 | * Check superblock similarity if we have a superblock - discard if different |
4b1ac34b | 96 | * Record events, devicenum |
64c4757e | 97 | * This should give us a list of devices for the array |
4b1ac34b | 98 | * We should collect the most recent event number |
64c4757e NB |
99 | * |
100 | * Count disks with recent enough event count | |
101 | * While force && !enough disks | |
102 | * Choose newest rejected disks, update event count | |
103 | * mark clean and rewrite superblock | |
104 | * If recent kernel: | |
105 | * SET_ARRAY_INFO | |
106 | * foreach device with recent events : ADD_NEW_DISK | |
107 | * if runstop == 1 || "enough" disks and runstop==0 -> RUN_ARRAY | |
108 | * If old kernel: | |
109 | * Check the device numbers in superblock are right | |
110 | * update superblock if any changes | |
111 | * START_ARRAY | |
112 | * | |
113 | */ | |
c30e5369 N |
114 | int mdfd; |
115 | int clean; | |
7f91af49 | 116 | int auto_assem = (mddev == NULL); |
64c4757e | 117 | int old_linux = 0; |
c30e5369 | 118 | int vers = vers; /* Keep gcc quite - it really is initialised */ |
64c4757e NB |
119 | struct { |
120 | char *devname; | |
213ee40b NB |
121 | int uptodate; /* set once we decide that this device is as |
122 | * recent as everything else in the array. | |
123 | */ | |
124 | struct mdinfo i; | |
5787fa49 | 125 | } *devices; |
56eedc1a | 126 | int *best = NULL; /* indexed by raid_disk */ |
98c6faba NB |
127 | unsigned int bestcnt = 0; |
128 | int devcnt = 0; | |
129 | unsigned int okcnt, sparecnt; | |
130 | unsigned int req_cnt; | |
131 | unsigned int i; | |
64c4757e | 132 | int most_recent = 0; |
cd29a5c8 | 133 | int chosen_drive; |
52826846 | 134 | int change = 0; |
cd29a5c8 | 135 | int inargv = 0; |
bf4fb153 | 136 | int bitmap_done; |
7f91af49 N |
137 | int start_partial_ok = (runstop >= 0) && |
138 | (force || devlist==NULL || auto_assem); | |
98c6faba | 139 | unsigned int num_devs; |
5787fa49 | 140 | mddev_dev_t tmpdev; |
4b1ac34b | 141 | struct mdinfo info; |
98dbd966 | 142 | struct mdinfo *content = NULL; |
c30e5369 | 143 | mdu_array_info_t tmp_inf; |
265e0f17 | 144 | char *avail; |
308e1801 | 145 | int nextspare = 0; |
197e3eb6 | 146 | char *name = NULL; |
69207ff6 | 147 | int trustworthy; |
a04d5763 | 148 | char chosen_name[1024]; |
8a46fe84 | 149 | |
682c7051 | 150 | if (get_linux_version() < 2004000) |
64c4757e NB |
151 | old_linux = 1; |
152 | ||
64c4757e | 153 | /* |
52826846 NB |
154 | * If any subdevs are listed, then any that don't |
155 | * match ident are discarded. Remainder must all match and | |
156 | * become the array. | |
157 | * If no subdevs, then we scan all devices in the config file, but | |
158 | * there must be something in the identity | |
64c4757e | 159 | */ |
64c4757e | 160 | |
cd29a5c8 | 161 | if (!devlist && |
52826846 NB |
162 | ident->uuid_set == 0 && |
163 | ident->super_minor < 0 && | |
164 | ident->devices == NULL) { | |
165 | fprintf(stderr, Name ": No identity information available for %s - cannot assemble.\n", | |
8a46fe84 | 166 | mddev ? mddev : "further assembly"); |
52826846 | 167 | return 1; |
64c4757e | 168 | } |
71d60c48 DW |
169 | |
170 | /* if the configuration specifies a container then we use that to | |
171 | * determine the devices and retrieve the array configuration | |
172 | */ | |
173 | #ifndef MDASSEMBLE | |
174 | if (ident->container && ident->member) { | |
175 | int cfd = open(ident->container, O_RDWR); | |
176 | struct mdinfo *mdi; | |
177 | struct supertype container; | |
178 | ||
179 | if (verbose>0) | |
180 | fprintf(stderr, Name ": looking to assemble member array %s" | |
181 | " inside container %s\n", ident->member, ident->container); | |
182 | if (cfd < 0) { | |
183 | if (verbose>0) | |
184 | fprintf(stderr, Name ": unable to open container %s: %s\n", | |
185 | ident->container, strerror(errno)); | |
186 | return 1; | |
187 | } | |
188 | ||
189 | mdi = sysfs_read(cfd, fd2devnum(cfd), GET_VERSION); | |
190 | if (!mdi) { | |
191 | close(cfd); | |
192 | if (verbose>0) | |
193 | fprintf(stderr, Name ": unable to read container %s\n", | |
194 | ident->container); | |
195 | return 1; | |
196 | } | |
197 | container.ss = find_metadata_methods(mdi->text_version); | |
198 | sysfs_free(mdi); | |
199 | if (!container.ss) { | |
200 | close(cfd); | |
201 | fprintf(stderr, Name ": %s uses unknown metadata: %s\n", | |
202 | ident->container, mdi->text_version); | |
203 | return 1; | |
204 | } | |
205 | if (container.ss->load_super(&container, cfd, ident->container)) { | |
206 | fprintf(stderr, Name ": Cannot load metadata for container %s\n", | |
207 | ident->container); | |
208 | return 1; | |
209 | } | |
210 | ||
211 | return Incremental_container(&container, ident->container, | |
215bb3f7 N |
212 | verbose, runstop, ident->autof, |
213 | LOCAL); | |
71d60c48 DW |
214 | } |
215 | #endif | |
cd29a5c8 | 216 | if (devlist == NULL) |
8aec876d | 217 | devlist = conf_get_devs(); |
7f91af49 | 218 | else if (mddev) |
da6b5ca9 | 219 | inargv = 1; |
64c4757e | 220 | |
60e1bc1a | 221 | try_again: |
c30e5369 N |
222 | /* We come back here when doing auto-assembly and attempting some |
223 | * set of devices failed. Those are now marked as ->used==2 and | |
224 | * we ignore them and try again | |
225 | */ | |
60e1bc1a | 226 | |
5787fa49 NB |
227 | tmpdev = devlist; num_devs = 0; |
228 | while (tmpdev) { | |
da6b5ca9 NB |
229 | if (tmpdev->used) |
230 | tmpdev->used = 2; | |
231 | else | |
232 | num_devs++; | |
5787fa49 NB |
233 | tmpdev = tmpdev->next; |
234 | } | |
5787fa49 NB |
235 | devices = malloc(num_devs * sizeof(*devices)); |
236 | ||
82d9eba6 | 237 | if (!st && ident->st) st = ident->st; |
64c4757e | 238 | |
dab6685f | 239 | if (verbose>0) |
82b27616 | 240 | fprintf(stderr, Name ": looking for devices for %s\n", |
8a46fe84 | 241 | mddev ? mddev : "further assembly"); |
82b27616 | 242 | |
811e6cbe NB |
243 | /* first walk the list of devices to find a consistent set |
244 | * that match the criterea, if that is possible. | |
c30e5369 | 245 | * We flag the ones we like with 'used'. |
811e6cbe NB |
246 | */ |
247 | for (tmpdev = devlist; | |
248 | tmpdev; | |
249 | tmpdev = tmpdev->next) { | |
250 | char *devname = tmpdev->devname; | |
64c4757e NB |
251 | int dfd; |
252 | struct stat stb; | |
3da92f27 | 253 | struct supertype *tst = dup_super(st); |
52826846 | 254 | |
da6b5ca9 NB |
255 | if (tmpdev->used > 1) continue; |
256 | ||
52826846 | 257 | if (ident->devices && |
56eedc1a | 258 | !match_oneof(ident->devices, devname)) { |
6a41304b | 259 | if ((inargv && verbose>=0) || verbose > 0) |
56eedc1a | 260 | fprintf(stderr, Name ": %s is not one of %s\n", devname, ident->devices); |
52826846 | 261 | continue; |
56eedc1a | 262 | } |
4b1ac34b | 263 | |
8b0dabea | 264 | dfd = dev_open(devname, O_RDONLY|O_EXCL); |
64c4757e | 265 | if (dfd < 0) { |
6a41304b | 266 | if ((inargv && verbose >= 0) || verbose > 0) |
682c7051 | 267 | fprintf(stderr, Name ": cannot open device %s: %s\n", |
64c4757e | 268 | devname, strerror(errno)); |
da6b5ca9 | 269 | tmpdev->used = 2; |
52826846 NB |
270 | } else if (fstat(dfd, &stb)< 0) { |
271 | /* Impossible! */ | |
272 | fprintf(stderr, Name ": fstat failed for %s: %s\n", | |
273 | devname, strerror(errno)); | |
da6b5ca9 | 274 | tmpdev->used = 2; |
cd29a5c8 NB |
275 | } else if ((stb.st_mode & S_IFMT) != S_IFBLK) { |
276 | fprintf(stderr, Name ": %s is not a block device.\n", | |
52826846 | 277 | devname); |
da6b5ca9 | 278 | tmpdev->used = 2; |
82d9eba6 | 279 | } else if (!tst && (tst = guess_super(dfd)) == NULL) { |
6a41304b | 280 | if ((inargv && verbose >= 0) || verbose > 0) |
da6b5ca9 NB |
281 | fprintf(stderr, Name ": no recogniseable superblock on %s\n", |
282 | devname); | |
283 | tmpdev->used = 2; | |
3da92f27 | 284 | } else if (tst->ss->load_super(tst,dfd, NULL)) { |
6a41304b | 285 | if ((inargv && verbose >= 0) || verbose > 0) |
682c7051 | 286 | fprintf( stderr, Name ": no RAID superblock on %s\n", |
64c4757e | 287 | devname); |
52826846 | 288 | } else { |
98dbd966 DW |
289 | content = &info; |
290 | memset(content, 0, sizeof(*content)); | |
291 | tst->ss->getinfo_super(tst, content); | |
64c4757e | 292 | } |
c06487ce | 293 | if (dfd >= 0) close(dfd); |
52826846 | 294 | |
838acbc2 | 295 | if (ident->uuid_set && (!update || strcmp(update, "uuid")!= 0) && |
3da92f27 | 296 | (!tst || !tst->sb || |
98dbd966 | 297 | same_uuid(content->uuid, ident->uuid, tst->ss->swapuuid)==0)) { |
6a41304b | 298 | if ((inargv && verbose >= 0) || verbose > 0) |
52826846 NB |
299 | fprintf(stderr, Name ": %s has wrong uuid.\n", |
300 | devname); | |
df37ffc0 | 301 | goto loop; |
82b27616 | 302 | } |
c4f12c13 | 303 | if (ident->name[0] && (!update || strcmp(update, "name")!= 0) && |
3da92f27 | 304 | (!tst || !tst->sb || |
98dbd966 | 305 | name_matches(content->name, ident->name, homehost)==0)) { |
6a41304b | 306 | if ((inargv && verbose >= 0) || verbose > 0) |
947fd4dd NB |
307 | fprintf(stderr, Name ": %s has wrong name.\n", |
308 | devname); | |
df37ffc0 | 309 | goto loop; |
947fd4dd | 310 | } |
98c6faba | 311 | if (ident->super_minor != UnSet && |
3da92f27 | 312 | (!tst || !tst->sb || |
98dbd966 | 313 | ident->super_minor != content->array.md_minor)) { |
6a41304b | 314 | if ((inargv && verbose >= 0) || verbose > 0) |
52826846 | 315 | fprintf(stderr, Name ": %s has wrong super-minor.\n", |
64c4757e | 316 | devname); |
df37ffc0 | 317 | goto loop; |
64c4757e | 318 | } |
98c6faba | 319 | if (ident->level != UnSet && |
3da92f27 | 320 | (!tst || !tst->sb || |
98dbd966 | 321 | ident->level != content->array.level)) { |
6a41304b | 322 | if ((inargv && verbose >= 0) || verbose > 0) |
cd29a5c8 NB |
323 | fprintf(stderr, Name ": %s has wrong raid level.\n", |
324 | devname); | |
df37ffc0 | 325 | goto loop; |
cd29a5c8 | 326 | } |
98c6faba | 327 | if (ident->raid_disks != UnSet && |
3da92f27 | 328 | (!tst || !tst->sb || |
98dbd966 | 329 | ident->raid_disks!= content->array.raid_disks)) { |
6a41304b | 330 | if ((inargv && verbose >= 0) || verbose > 0) |
cd29a5c8 NB |
331 | fprintf(stderr, Name ": %s requires wrong number of drives.\n", |
332 | devname); | |
df37ffc0 | 333 | goto loop; |
cd29a5c8 | 334 | } |
c30e5369 | 335 | if (auto_assem) { |
3da92f27 | 336 | if (tst == NULL || tst->sb == NULL) |
da6b5ca9 | 337 | continue; |
da6b5ca9 | 338 | } |
83b6208e | 339 | /* If we are this far, then we are nearly commited to this device. |
52826846 | 340 | * If the super_block doesn't exist, or doesn't match others, |
83b6208e NB |
341 | * then we probably cannot continue |
342 | * However if one of the arrays is for the homehost, and | |
343 | * the other isn't that can disambiguate. | |
52826846 | 344 | */ |
52826846 | 345 | |
3da92f27 | 346 | if (!tst || !tst->sb) { |
52826846 NB |
347 | fprintf(stderr, Name ": %s has no superblock - assembly aborted\n", |
348 | devname); | |
ddd1a492 NB |
349 | if (st) |
350 | st->ss->free_super(st); | |
52826846 NB |
351 | return 1; |
352 | } | |
838acbc2 | 353 | |
83b6208e | 354 | if (st == NULL) |
3da92f27 NB |
355 | st = dup_super(tst); |
356 | if (st->minor_version == -1) | |
357 | st->minor_version = tst->minor_version; | |
83b6208e NB |
358 | if (st->ss != tst->ss || |
359 | st->minor_version != tst->minor_version || | |
64557c33 | 360 | st->ss->compare_super(st, tst) != 0) { |
83b6208e | 361 | /* Some mismatch. If exactly one array matches this host, |
da6b5ca9 NB |
362 | * we can resolve on that one. |
363 | * Or, if we are auto assembling, we just ignore the second | |
364 | * for now. | |
83b6208e | 365 | */ |
c30e5369 | 366 | if (auto_assem) |
df37ffc0 | 367 | goto loop; |
83b6208e | 368 | if (homehost) { |
3da92f27 NB |
369 | int first = st->ss->match_home(st, homehost); |
370 | int last = tst->ss->match_home(tst, homehost); | |
9362c1c8 N |
371 | if (first != last && |
372 | (first == 1 || last == 1)) { | |
83b6208e NB |
373 | /* We can do something */ |
374 | if (first) {/* just ignore this one */ | |
375 | if ((inargv && verbose >= 0) || verbose > 0) | |
376 | fprintf(stderr, Name ": %s misses out due to wrong homehost\n", | |
377 | devname); | |
df37ffc0 | 378 | goto loop; |
83b6208e NB |
379 | } else { /* reject all those sofar */ |
380 | mddev_dev_t td; | |
381 | if ((inargv && verbose >= 0) || verbose > 0) | |
382 | fprintf(stderr, Name ": %s overrides previous devices due to good homehost\n", | |
383 | devname); | |
384 | for (td=devlist; td != tmpdev; td=td->next) | |
385 | if (td->used == 1) | |
386 | td->used = 0; | |
387 | tmpdev->used = 1; | |
df37ffc0 | 388 | goto loop; |
83b6208e NB |
389 | } |
390 | } | |
391 | } | |
52826846 NB |
392 | fprintf(stderr, Name ": superblock on %s doesn't match others - assembly aborted\n", |
393 | devname); | |
3da92f27 NB |
394 | tst->ss->free_super(tst); |
395 | st->ss->free_super(st); | |
52826846 | 396 | return 1; |
64c4757e NB |
397 | } |
398 | ||
811e6cbe | 399 | tmpdev->used = 1; |
df37ffc0 NB |
400 | |
401 | loop: | |
3d2b16e7 NB |
402 | if (tst) |
403 | tst->ss->free_super(tst); | |
811e6cbe NB |
404 | } |
405 | ||
98dbd966 | 406 | if (!st || !st->sb || !content) |
c30e5369 N |
407 | return 2; |
408 | ||
69207ff6 | 409 | /* Now need to open array the device. Use create_mddev */ |
98dbd966 DW |
410 | if (content == &info) |
411 | st->ss->getinfo_super(st, content); | |
3d2c4fc7 | 412 | |
69207ff6 N |
413 | trustworthy = FOREIGN; |
414 | switch (st->ss->match_home(st, homehost)) { | |
415 | case 0: | |
416 | trustworthy = FOREIGN; | |
98dbd966 | 417 | name = content->name; |
69207ff6 N |
418 | break; |
419 | case 1: | |
420 | trustworthy = LOCAL; | |
98dbd966 | 421 | name = strchr(content->name, ':'); |
69207ff6 N |
422 | if (name) |
423 | name++; | |
3d2c4fc7 | 424 | else |
98dbd966 | 425 | name = content->name; |
69207ff6 N |
426 | break; |
427 | case -1: | |
a4bc1720 | 428 | trustworthy = FOREIGN; |
69207ff6 | 429 | break; |
c30e5369 | 430 | } |
ac2ecf55 N |
431 | if (!auto_assem && trustworthy == FOREIGN) |
432 | /* If the array is listed in mdadm or on | |
433 | * command line, then we trust the name | |
434 | * even if the array doesn't look local | |
435 | */ | |
436 | trustworthy = LOCAL; | |
437 | ||
98dbd966 DW |
438 | if (content->name[0] == 0 && |
439 | content->array.level == LEVEL_CONTAINER) { | |
440 | name = content->text_version; | |
a4bc1720 N |
441 | trustworthy = METADATA; |
442 | } | |
a04d5763 N |
443 | mdfd = create_mddev(mddev, name, ident->autof, trustworthy, |
444 | chosen_name); | |
c30e5369 N |
445 | if (mdfd < 0) { |
446 | st->ss->free_super(st); | |
447 | free(devices); | |
448 | if (auto_assem) | |
60e1bc1a | 449 | goto try_again; |
c30e5369 N |
450 | return 1; |
451 | } | |
a04d5763 | 452 | mddev = chosen_name; |
c30e5369 N |
453 | vers = md_get_version(mdfd); |
454 | if (vers < 9000) { | |
455 | fprintf(stderr, Name ": Assemble requires driver version 0.90.0 or later.\n" | |
456 | " Upgrade your kernel or try --build\n"); | |
457 | close(mdfd); | |
458 | return 1; | |
459 | } | |
460 | if (ioctl(mdfd, GET_ARRAY_INFO, &tmp_inf)==0) { | |
461 | fprintf(stderr, Name ": %s already active, cannot restart it!\n", | |
462 | mddev); | |
463 | for (tmpdev = devlist ; | |
464 | tmpdev && tmpdev->used != 1; | |
465 | tmpdev = tmpdev->next) | |
466 | ; | |
467 | if (tmpdev && auto_assem) | |
468 | fprintf(stderr, Name ": %s needed for %s...\n", | |
469 | mddev, tmpdev->devname); | |
470 | close(mdfd); | |
471 | mdfd = -3; | |
472 | st->ss->free_super(st); | |
473 | free(devices); | |
474 | if (auto_assem) | |
475 | goto try_again; | |
476 | return 1; | |
8a46fe84 | 477 | } |
c30e5369 | 478 | ioctl(mdfd, STOP_ARRAY, NULL); /* just incase it was started but has no content */ |
8a46fe84 | 479 | |
811e6cbe | 480 | /* Ok, no bad inconsistancy, we can try updating etc */ |
bf4fb153 | 481 | bitmap_done = 0; |
da6b5ca9 | 482 | for (tmpdev = devlist; tmpdev; tmpdev=tmpdev->next) if (tmpdev->used == 1) { |
811e6cbe NB |
483 | char *devname = tmpdev->devname; |
484 | struct stat stb; | |
5787fa49 | 485 | /* looks like a good enough match to update the super block if needed */ |
d1f1011b | 486 | #ifndef MDASSEMBLE |
5787fa49 | 487 | if (update) { |
811e6cbe | 488 | int dfd; |
4b1ac34b NB |
489 | /* prepare useful information in info structures */ |
490 | struct stat stb2; | |
3da92f27 | 491 | struct supertype *tst; |
4b1ac34b | 492 | fstat(mdfd, &stb2); |
7d99579f NB |
493 | |
494 | if (strcmp(update, "uuid")==0 && | |
495 | !ident->uuid_set) { | |
496 | int rfd; | |
497 | if ((rfd = open("/dev/urandom", O_RDONLY)) < 0 || | |
498 | read(rfd, ident->uuid, 16) != 16) { | |
499 | *(__u32*)(ident->uuid) = random(); | |
500 | *(__u32*)(ident->uuid+1) = random(); | |
501 | *(__u32*)(ident->uuid+2) = random(); | |
502 | *(__u32*)(ident->uuid+3) = random(); | |
503 | } | |
504 | if (rfd >= 0) close(rfd); | |
7d99579f | 505 | } |
811e6cbe NB |
506 | dfd = dev_open(devname, O_RDWR|O_EXCL); |
507 | ||
0430ed48 NB |
508 | remove_partitions(dfd); |
509 | ||
3da92f27 NB |
510 | tst = dup_super(st); |
511 | tst->ss->load_super(tst, dfd, NULL); | |
98dbd966 | 512 | tst->ss->getinfo_super(tst, content); |
811e6cbe | 513 | |
98dbd966 DW |
514 | memcpy(content->uuid, ident->uuid, 16); |
515 | strcpy(content->name, ident->name); | |
516 | content->array.md_minor = minor(stb2.st_rdev); | |
811e6cbe | 517 | |
98dbd966 | 518 | tst->ss->update_super(tst, content, update, |
3da92f27 NB |
519 | devname, verbose, |
520 | ident->uuid_set, homehost); | |
e5eac01f NB |
521 | if (strcmp(update, "uuid")==0 && |
522 | !ident->uuid_set) { | |
523 | ident->uuid_set = 1; | |
98dbd966 | 524 | memcpy(ident->uuid, content->uuid, 16); |
e5eac01f | 525 | } |
b8a8ccf9 | 526 | if (dfd < 0) |
5787fa49 NB |
527 | fprintf(stderr, Name ": Cannot open %s for superblock update\n", |
528 | devname); | |
3da92f27 | 529 | else if (tst->ss->store_super(tst, dfd)) |
5787fa49 NB |
530 | fprintf(stderr, Name ": Could not re-write superblock on %s.\n", |
531 | devname); | |
532 | if (dfd >= 0) | |
533 | close(dfd); | |
8131b493 NB |
534 | |
535 | if (strcmp(update, "uuid")==0 && | |
bf4fb153 | 536 | ident->bitmap_fd >= 0 && !bitmap_done) { |
3da92f27 | 537 | if (bitmap_update_uuid(ident->bitmap_fd, |
98dbd966 | 538 | content->uuid, |
3da92f27 | 539 | tst->ss->swapuuid) != 0) |
bf4fb153 NB |
540 | fprintf(stderr, Name ": Could not update uuid on external bitmap.\n"); |
541 | else | |
542 | bitmap_done = 1; | |
543 | } | |
3da92f27 | 544 | tst->ss->free_super(tst); |
d1f1011b NB |
545 | } else |
546 | #endif | |
547 | { | |
30e1b9a5 | 548 | struct supertype *tst = dup_super(st); |
da6b5ca9 NB |
549 | int dfd; |
550 | dfd = dev_open(devname, O_RDWR|O_EXCL); | |
551 | ||
0430ed48 NB |
552 | remove_partitions(dfd); |
553 | ||
3da92f27 | 554 | tst->ss->load_super(tst, dfd, NULL); |
98dbd966 | 555 | tst->ss->getinfo_super(tst, content); |
3da92f27 | 556 | tst->ss->free_super(tst); |
da6b5ca9 | 557 | close(dfd); |
5787fa49 NB |
558 | } |
559 | ||
811e6cbe NB |
560 | stat(devname, &stb); |
561 | ||
dab6685f | 562 | if (verbose > 0) |
cd29a5c8 | 563 | fprintf(stderr, Name ": %s is identified as a member of %s, slot %d.\n", |
98dbd966 | 564 | devname, mddev, content->disk.raid_disk); |
64c4757e | 565 | devices[devcnt].devname = devname; |
64c4757e | 566 | devices[devcnt].uptodate = 0; |
98dbd966 | 567 | devices[devcnt].i = *content; |
213ee40b NB |
568 | devices[devcnt].i.disk.major = major(stb.st_rdev); |
569 | devices[devcnt].i.disk.minor = minor(stb.st_rdev); | |
64c4757e | 570 | if (most_recent < devcnt) { |
213ee40b NB |
571 | if (devices[devcnt].i.events |
572 | > devices[most_recent].i.events) | |
64c4757e NB |
573 | most_recent = devcnt; |
574 | } | |
98dbd966 | 575 | if (content->array.level == -4) |
5787fa49 NB |
576 | /* with multipath, the raid_disk from the superblock is meaningless */ |
577 | i = devcnt; | |
578 | else | |
213ee40b | 579 | i = devices[devcnt].i.disk.raid_disk; |
308e1801 | 580 | if (i+1 == 0) { |
98dbd966 DW |
581 | if (nextspare < content->array.raid_disks) |
582 | nextspare = content->array.raid_disks; | |
308e1801 | 583 | i = nextspare++; |
08110d41 | 584 | } else { |
98dbd966 | 585 | if (i >= content->array.raid_disks && |
08110d41 NB |
586 | i >= nextspare) |
587 | nextspare = i+1; | |
308e1801 | 588 | } |
98c6faba | 589 | if (i < 10000) { |
56eedc1a | 590 | if (i >= bestcnt) { |
98c6faba | 591 | unsigned int newbestcnt = i+10; |
56eedc1a | 592 | int *newbest = malloc(sizeof(int)*newbestcnt); |
98c6faba | 593 | unsigned int c; |
56eedc1a NB |
594 | for (c=0; c < newbestcnt; c++) |
595 | if (c < bestcnt) | |
596 | newbest[c] = best[c]; | |
597 | else | |
598 | newbest[c] = -1; | |
599 | if (best)free(best); | |
600 | best = newbest; | |
601 | bestcnt = newbestcnt; | |
602 | } | |
6a255b69 | 603 | if (best[i] >=0 && |
213ee40b NB |
604 | devices[best[i]].i.events |
605 | == devices[devcnt].i.events | |
606 | && (devices[best[i]].i.disk.minor | |
607 | != devices[devcnt].i.disk.minor) | |
b8ac1967 | 608 | && st->ss == &super0 |
98dbd966 | 609 | && content->array.level != LEVEL_MULTIPATH) { |
6a255b69 NB |
610 | /* two different devices with identical superblock. |
611 | * Could be a mis-detection caused by overlapping | |
612 | * partitions. fail-safe. | |
613 | */ | |
614 | fprintf(stderr, Name ": WARNING %s and %s appear" | |
615 | " to have very similar superblocks.\n" | |
616 | " If they are really different, " | |
617 | "please --zero the superblock on one\n" | |
d2df86e0 NB |
618 | " If they are the same or overlap," |
619 | " please remove one from %s.\n", | |
620 | devices[best[i]].devname, devname, | |
621 | inargv ? "the list" : | |
622 | "the\n DEVICE list in mdadm.conf" | |
623 | ); | |
7f91af49 | 624 | close(mdfd); |
6a255b69 NB |
625 | return 1; |
626 | } | |
52826846 | 627 | if (best[i] == -1 |
213ee40b NB |
628 | || (devices[best[i]].i.events |
629 | < devices[devcnt].i.events)) | |
52826846 | 630 | best[i] = devcnt; |
56eedc1a | 631 | } |
64c4757e | 632 | devcnt++; |
df37ffc0 | 633 | } |
4b1ac34b | 634 | |
64c4757e | 635 | if (devcnt == 0) { |
682c7051 | 636 | fprintf(stderr, Name ": no devices found for %s\n", |
64c4757e | 637 | mddev); |
3d2b16e7 NB |
638 | if (st) |
639 | st->ss->free_super(st); | |
7f91af49 | 640 | close(mdfd); |
64c4757e NB |
641 | return 1; |
642 | } | |
4b1ac34b | 643 | |
3d2b16e7 NB |
644 | if (update && strcmp(update, "byteorder")==0) |
645 | st->minor_version = 90; | |
646 | ||
98dbd966 DW |
647 | st->ss->getinfo_super(st, content); |
648 | clean = content->array.state & 1; | |
4b1ac34b | 649 | |
64c4757e NB |
650 | /* now we have some devices that might be suitable. |
651 | * I wonder how many | |
652 | */ | |
98dbd966 DW |
653 | avail = malloc(content->array.raid_disks); |
654 | memset(avail, 0, content->array.raid_disks); | |
64c4757e | 655 | okcnt = 0; |
52826846 | 656 | sparecnt=0; |
56eedc1a | 657 | for (i=0; i< bestcnt ;i++) { |
64c4757e | 658 | int j = best[i]; |
ee04451c NB |
659 | int event_margin = 1; /* always allow a difference of '1' |
660 | * like the kernel does | |
661 | */ | |
64c4757e | 662 | if (j < 0) continue; |
d013a55e NB |
663 | /* note: we ignore error flags in multipath arrays |
664 | * as they don't make sense | |
665 | */ | |
98dbd966 | 666 | if (content->array.level != -4) |
213ee40b NB |
667 | if (!(devices[j].i.disk.state & (1<<MD_DISK_SYNC))) { |
668 | if (!(devices[j].i.disk.state | |
669 | & (1<<MD_DISK_FAULTY))) | |
aa88f531 | 670 | sparecnt++; |
d013a55e | 671 | continue; |
aa88f531 | 672 | } |
213ee40b NB |
673 | if (devices[j].i.events+event_margin >= |
674 | devices[most_recent].i.events) { | |
64c4757e | 675 | devices[j].uptodate = 1; |
98dbd966 | 676 | if (i < content->array.raid_disks) { |
52826846 | 677 | okcnt++; |
265e0f17 NB |
678 | avail[i]=1; |
679 | } else | |
52826846 | 680 | sparecnt++; |
64c4757e NB |
681 | } |
682 | } | |
98dbd966 DW |
683 | while (force && !enough(content->array.level, content->array.raid_disks, |
684 | content->array.layout, 1, | |
265e0f17 | 685 | avail, okcnt)) { |
64c4757e NB |
686 | /* Choose the newest best drive which is |
687 | * not up-to-date, update the superblock | |
688 | * and add it. | |
689 | */ | |
52826846 | 690 | int fd; |
3da92f27 | 691 | struct supertype *tst; |
c5a6f9a6 | 692 | long long current_events; |
cd29a5c8 | 693 | chosen_drive = -1; |
98dbd966 | 694 | for (i=0; i<content->array.raid_disks && i < bestcnt; i++) { |
52826846 NB |
695 | int j = best[i]; |
696 | if (j>=0 && | |
697 | !devices[j].uptodate && | |
213ee40b | 698 | devices[j].i.events > 0 && |
52826846 | 699 | (chosen_drive < 0 || |
213ee40b NB |
700 | devices[j].i.events |
701 | > devices[chosen_drive].i.events)) | |
52826846 NB |
702 | chosen_drive = j; |
703 | } | |
704 | if (chosen_drive < 0) | |
705 | break; | |
213ee40b | 706 | current_events = devices[chosen_drive].i.events; |
c5a6f9a6 | 707 | add_another: |
dab6685f NB |
708 | if (verbose >= 0) |
709 | fprintf(stderr, Name ": forcing event count in %s(%d) from %d upto %d\n", | |
213ee40b NB |
710 | devices[chosen_drive].devname, |
711 | devices[chosen_drive].i.disk.raid_disk, | |
712 | (int)(devices[chosen_drive].i.events), | |
713 | (int)(devices[most_recent].i.events)); | |
8b0dabea | 714 | fd = dev_open(devices[chosen_drive].devname, O_RDWR|O_EXCL); |
52826846 NB |
715 | if (fd < 0) { |
716 | fprintf(stderr, Name ": Couldn't open %s for write - not updating\n", | |
717 | devices[chosen_drive].devname); | |
213ee40b | 718 | devices[chosen_drive].i.events = 0; |
52826846 NB |
719 | continue; |
720 | } | |
3da92f27 | 721 | tst = dup_super(st); |
60b435db | 722 | if (tst->ss->load_super(tst,fd, NULL)) { |
52826846 NB |
723 | close(fd); |
724 | fprintf(stderr, Name ": RAID superblock disappeared from %s - not updating.\n", | |
725 | devices[chosen_drive].devname); | |
213ee40b | 726 | devices[chosen_drive].i.events = 0; |
52826846 NB |
727 | continue; |
728 | } | |
98dbd966 DW |
729 | content->events = devices[most_recent].i.events; |
730 | tst->ss->update_super(tst, content, "force-one", | |
67a8c82d NB |
731 | devices[chosen_drive].devname, verbose, |
732 | 0, NULL); | |
4b1ac34b | 733 | |
3da92f27 | 734 | if (tst->ss->store_super(tst, fd)) { |
52826846 NB |
735 | close(fd); |
736 | fprintf(stderr, Name ": Could not re-write superblock on %s\n", | |
737 | devices[chosen_drive].devname); | |
213ee40b | 738 | devices[chosen_drive].i.events = 0; |
3da92f27 | 739 | tst->ss->free_super(tst); |
52826846 NB |
740 | continue; |
741 | } | |
742 | close(fd); | |
213ee40b | 743 | devices[chosen_drive].i.events = devices[most_recent].i.events; |
52826846 | 744 | devices[chosen_drive].uptodate = 1; |
265e0f17 | 745 | avail[chosen_drive] = 1; |
52826846 | 746 | okcnt++; |
3da92f27 | 747 | tst->ss->free_super(tst); |
c5a6f9a6 NB |
748 | |
749 | /* If there are any other drives of the same vintage, | |
750 | * add them in as well. We can't lose and we might gain | |
751 | */ | |
98dbd966 | 752 | for (i=0; i<content->array.raid_disks && i < bestcnt ; i++) { |
c5a6f9a6 NB |
753 | int j = best[i]; |
754 | if (j >= 0 && | |
755 | !devices[j].uptodate && | |
213ee40b NB |
756 | devices[j].i.events > 0 && |
757 | devices[j].i.events == current_events) { | |
c5a6f9a6 NB |
758 | chosen_drive = j; |
759 | goto add_another; | |
760 | } | |
761 | } | |
64c4757e | 762 | } |
52826846 NB |
763 | |
764 | /* Now we want to look at the superblock which the kernel will base things on | |
765 | * and compare the devices that we think are working with the devices that the | |
766 | * superblock thinks are working. | |
767 | * If there are differences and --force is given, then update this chosen | |
768 | * superblock. | |
769 | */ | |
cd29a5c8 | 770 | chosen_drive = -1; |
3da92f27 | 771 | st->ss->free_super(st); |
56eedc1a | 772 | for (i=0; chosen_drive < 0 && i<bestcnt; i++) { |
52826846 NB |
773 | int j = best[i]; |
774 | int fd; | |
4b1ac34b | 775 | |
52826846 NB |
776 | if (j<0) |
777 | continue; | |
778 | if (!devices[j].uptodate) | |
779 | continue; | |
780 | chosen_drive = j; | |
8b0dabea | 781 | if ((fd=dev_open(devices[j].devname, O_RDONLY|O_EXCL))< 0) { |
52826846 NB |
782 | fprintf(stderr, Name ": Cannot open %s: %s\n", |
783 | devices[j].devname, strerror(errno)); | |
7f91af49 | 784 | close(mdfd); |
52826846 NB |
785 | return 1; |
786 | } | |
3da92f27 | 787 | if (st->ss->load_super(st,fd, NULL)) { |
52826846 NB |
788 | close(fd); |
789 | fprintf(stderr, Name ": RAID superblock has disappeared from %s\n", | |
790 | devices[j].devname); | |
7f91af49 | 791 | close(mdfd); |
52826846 NB |
792 | return 1; |
793 | } | |
794 | close(fd); | |
795 | } | |
3da92f27 | 796 | if (st->sb == NULL) { |
4b1ac34b | 797 | fprintf(stderr, Name ": No suitable drives found for %s\n", mddev); |
7f91af49 | 798 | close(mdfd); |
4b1ac34b NB |
799 | return 1; |
800 | } | |
98dbd966 | 801 | st->ss->getinfo_super(st, content); |
f35f2525 | 802 | #ifndef MDASSEMBLE |
98dbd966 | 803 | sysfs_init(content, mdfd, 0); |
f35f2525 | 804 | #endif |
56eedc1a | 805 | for (i=0; i<bestcnt; i++) { |
52826846 | 806 | int j = best[i]; |
98c6faba | 807 | unsigned int desired_state; |
11a3e71d | 808 | |
98dbd966 | 809 | if (i < content->array.raid_disks) |
11a3e71d NB |
810 | desired_state = (1<<MD_DISK_ACTIVE) | (1<<MD_DISK_SYNC); |
811 | else | |
812 | desired_state = 0; | |
813 | ||
52826846 NB |
814 | if (j<0) |
815 | continue; | |
816 | if (!devices[j].uptodate) | |
817 | continue; | |
4b1ac34b | 818 | |
213ee40b NB |
819 | devices[j].i.disk.state = desired_state; |
820 | ||
821 | if (st->ss->update_super(st, &devices[j].i, "assemble", NULL, | |
68c7d6d7 | 822 | verbose, 0, NULL)) { |
52826846 | 823 | if (force) { |
dab6685f NB |
824 | if (verbose >= 0) |
825 | fprintf(stderr, Name ": " | |
826 | "clearing FAULTY flag for device %d in %s for %s\n", | |
827 | j, mddev, devices[j].devname); | |
4b1ac34b | 828 | change = 1; |
52826846 | 829 | } else { |
dab6685f NB |
830 | if (verbose >= -1) |
831 | fprintf(stderr, Name ": " | |
832 | "device %d in %s has wrong state in superblock, but %s seems ok\n", | |
833 | i, mddev, devices[j].devname); | |
52826846 NB |
834 | } |
835 | } | |
4b1ac34b | 836 | #if 0 |
213ee40b | 837 | if (!(super.disks[i].i.disk.state & (1 << MD_DISK_FAULTY))) { |
52826846 NB |
838 | fprintf(stderr, Name ": devices %d of %s is not marked FAULTY in superblock, but cannot be found\n", |
839 | i, mddev); | |
840 | } | |
4b1ac34b | 841 | #endif |
52826846 | 842 | } |
c5a6f9a6 | 843 | if (force && !clean && |
98dbd966 DW |
844 | !enough(content->array.level, content->array.raid_disks, |
845 | content->array.layout, clean, | |
c5a6f9a6 | 846 | avail, okcnt)) { |
98dbd966 | 847 | change += st->ss->update_super(st, content, "force-array", |
67a8c82d NB |
848 | devices[chosen_drive].devname, verbose, |
849 | 0, NULL); | |
583315d9 | 850 | clean = 1; |
d013a55e | 851 | } |
52826846 | 852 | |
4b1ac34b | 853 | if (change) { |
52826846 | 854 | int fd; |
8b0dabea | 855 | fd = dev_open(devices[chosen_drive].devname, O_RDWR|O_EXCL); |
52826846 | 856 | if (fd < 0) { |
353632d9 | 857 | fprintf(stderr, Name ": Could not open %s for write - cannot Assemble array.\n", |
52826846 | 858 | devices[chosen_drive].devname); |
7f91af49 | 859 | close(mdfd); |
52826846 NB |
860 | return 1; |
861 | } | |
3da92f27 | 862 | if (st->ss->store_super(st, fd)) { |
52826846 NB |
863 | close(fd); |
864 | fprintf(stderr, Name ": Could not re-write superblock on %s\n", | |
865 | devices[chosen_drive].devname); | |
7f91af49 | 866 | close(mdfd); |
52826846 NB |
867 | return 1; |
868 | } | |
869 | close(fd); | |
52826846 NB |
870 | } |
871 | ||
353632d9 NB |
872 | /* If we are in the middle of a reshape we may need to restore saved data |
873 | * that was moved aside due to the reshape overwriting live data | |
874 | * The code of doing this lives in Grow.c | |
875 | */ | |
39c5a909 | 876 | #ifndef MDASSEMBLE |
98dbd966 | 877 | if (content->reshape_active) { |
353632d9 NB |
878 | int err = 0; |
879 | int *fdlist = malloc(sizeof(int)* bestcnt); | |
880 | for (i=0; i<bestcnt; i++) { | |
881 | int j = best[i]; | |
882 | if (j >= 0) { | |
883 | fdlist[i] = dev_open(devices[j].devname, O_RDWR|O_EXCL); | |
884 | if (fdlist[i] < 0) { | |
885 | fprintf(stderr, Name ": Could not open %s for write - cannot Assemble array.\n", | |
886 | devices[j].devname); | |
887 | err = 1; | |
888 | break; | |
889 | } | |
890 | } else | |
891 | fdlist[i] = -1; | |
892 | } | |
893 | if (!err) | |
98dbd966 | 894 | err = Grow_restart(st, content, fdlist, bestcnt, backup_file); |
353632d9 NB |
895 | while (i>0) { |
896 | i--; | |
897 | if (fdlist[i]>=0) close(fdlist[i]); | |
898 | } | |
899 | if (err) { | |
900 | fprintf(stderr, Name ": Failed to restore critical section for reshape, sorry.\n"); | |
7f91af49 | 901 | close(mdfd); |
353632d9 NB |
902 | return err; |
903 | } | |
904 | } | |
39c5a909 | 905 | #endif |
aa88f531 NB |
906 | /* count number of in-sync devices according to the superblock. |
907 | * We must have this number to start the array without -s or -R | |
908 | */ | |
98dbd966 | 909 | req_cnt = content->array.working_disks; |
aa88f531 | 910 | |
64c4757e NB |
911 | /* Almost ready to actually *do* something */ |
912 | if (!old_linux) { | |
fbf8a0b7 | 913 | int rv; |
a19c88b8 | 914 | |
a04d5763 N |
915 | /* First, fill in the map, so that udev can find our name |
916 | * as soon as we become active. | |
917 | */ | |
98dbd966 DW |
918 | map_update(NULL, fd2devnum(mdfd), content->text_version, |
919 | content->uuid, chosen_name); | |
a04d5763 | 920 | |
98dbd966 | 921 | rv = set_array_info(mdfd, st, content); |
fbf8a0b7 | 922 | if (rv) { |
f35f2525 | 923 | fprintf(stderr, Name ": failed to set array info for %s: %s\n", |
64c4757e | 924 | mddev, strerror(errno)); |
7f91af49 | 925 | close(mdfd); |
64c4757e NB |
926 | return 1; |
927 | } | |
11484a63 | 928 | if (ident->bitmap_fd >= 0) { |
c82f047c NB |
929 | if (ioctl(mdfd, SET_BITMAP_FILE, ident->bitmap_fd) != 0) { |
930 | fprintf(stderr, Name ": SET_BITMAP_FILE failed.\n"); | |
7f91af49 | 931 | close(mdfd); |
c82f047c NB |
932 | return 1; |
933 | } | |
7ef02d01 NB |
934 | } else if (ident->bitmap_file) { |
935 | /* From config file */ | |
936 | int bmfd = open(ident->bitmap_file, O_RDWR); | |
937 | if (bmfd < 0) { | |
938 | fprintf(stderr, Name ": Could not open bitmap file %s\n", | |
939 | ident->bitmap_file); | |
7f91af49 | 940 | close(mdfd); |
7ef02d01 NB |
941 | return 1; |
942 | } | |
943 | if (ioctl(mdfd, SET_BITMAP_FILE, bmfd) != 0) { | |
944 | fprintf(stderr, Name ": Failed to set bitmapfile for %s\n", mddev); | |
945 | close(bmfd); | |
7f91af49 | 946 | close(mdfd); |
7ef02d01 NB |
947 | return 1; |
948 | } | |
949 | close(bmfd); | |
c82f047c | 950 | } |
7ef02d01 | 951 | |
52826846 | 952 | /* First, add the raid disks, but add the chosen one last */ |
56eedc1a | 953 | for (i=0; i<= bestcnt; i++) { |
52826846 | 954 | int j; |
56eedc1a | 955 | if (i < bestcnt) { |
52826846 NB |
956 | j = best[i]; |
957 | if (j == chosen_drive) | |
958 | continue; | |
959 | } else | |
960 | j = chosen_drive; | |
961 | ||
56eedc1a | 962 | if (j >= 0 /* && devices[j].uptodate */) { |
98dbd966 | 963 | rv = add_disk(mdfd, st, content, &devices[j].i); |
7801ac20 | 964 | |
a19c88b8 | 965 | if (rv) { |
213ee40b NB |
966 | fprintf(stderr, Name ": failed to add " |
967 | "%s to %s: %s\n", | |
64c4757e NB |
968 | devices[j].devname, |
969 | mddev, | |
970 | strerror(errno)); | |
98dbd966 | 971 | if (i < content->array.raid_disks |
213ee40b | 972 | || i == bestcnt) |
52826846 NB |
973 | okcnt--; |
974 | else | |
975 | sparecnt--; | |
dab6685f | 976 | } else if (verbose > 0) |
213ee40b NB |
977 | fprintf(stderr, Name ": added %s " |
978 | "to %s as %d\n", | |
979 | devices[j].devname, mddev, | |
980 | devices[j].i.disk.raid_disk); | |
98dbd966 | 981 | } else if (verbose > 0 && i < content->array.raid_disks) |
213ee40b NB |
982 | fprintf(stderr, Name ": no uptodate device for " |
983 | "slot %d of %s\n", | |
64c4757e NB |
984 | i, mddev); |
985 | } | |
aba69144 | 986 | |
98dbd966 | 987 | if (content->array.level == LEVEL_CONTAINER) { |
598f0d58 NB |
988 | if (verbose >= 0) { |
989 | fprintf(stderr, Name ": Container %s has been " | |
990 | "assembled with %d drive%s", | |
57ed8c91 | 991 | mddev, okcnt+sparecnt, okcnt+sparecnt==1?"":"s"); |
98dbd966 | 992 | if (okcnt < content->array.raid_disks) |
598f0d58 | 993 | fprintf(stderr, " (out of %d)", |
98dbd966 | 994 | content->array.raid_disks); |
598f0d58 NB |
995 | fprintf(stderr, "\n"); |
996 | } | |
98dbd966 | 997 | sysfs_uevent(content, "change"); |
7f91af49 | 998 | close(mdfd); |
598f0d58 NB |
999 | return 0; |
1000 | } | |
1001 | ||
64c4757e | 1002 | if (runstop == 1 || |
b8a8ccf9 | 1003 | (runstop <= 0 && |
98dbd966 DW |
1004 | ( enough(content->array.level, content->array.raid_disks, |
1005 | content->array.layout, clean, avail, okcnt) && | |
aa88f531 NB |
1006 | (okcnt >= req_cnt || start_partial_ok) |
1007 | ))) { | |
82b27616 | 1008 | if (ioctl(mdfd, RUN_ARRAY, NULL)==0) { |
dab6685f NB |
1009 | if (verbose >= 0) { |
1010 | fprintf(stderr, Name ": %s has been started with %d drive%s", | |
1011 | mddev, okcnt, okcnt==1?"":"s"); | |
98dbd966 DW |
1012 | if (okcnt < content->array.raid_disks) |
1013 | fprintf(stderr, " (out of %d)", content->array.raid_disks); | |
dab6685f NB |
1014 | if (sparecnt) |
1015 | fprintf(stderr, " and %d spare%s", sparecnt, sparecnt==1?"":"s"); | |
1016 | fprintf(stderr, ".\n"); | |
1017 | } | |
7f91af49 N |
1018 | close(mdfd); |
1019 | if (auto_assem) { | |
589395d6 | 1020 | int usecs = 1; |
589395d6 NB |
1021 | /* There is a nasty race with 'mdadm --monitor'. |
1022 | * If it opens this device before we close it, | |
1023 | * it gets an incomplete open on which IO | |
598f0d58 NB |
1024 | * doesn't work and the capacity is |
1025 | * wrong. | |
589395d6 NB |
1026 | * If we reopen (to check for layered devices) |
1027 | * before --monitor closes, we loose. | |
1028 | * | |
1029 | * So: wait upto 1 second for there to be | |
1030 | * a non-zero capacity. | |
1031 | */ | |
1032 | while (usecs < 1000) { | |
1033 | mdfd = open(mddev, O_RDONLY); | |
1034 | if (mdfd >= 0) { | |
beae1dfe NB |
1035 | unsigned long long size; |
1036 | if (get_dev_size(mdfd, NULL, &size) && | |
589395d6 NB |
1037 | size > 0) |
1038 | break; | |
1039 | close(mdfd); | |
1040 | } | |
1041 | usleep(usecs); | |
1042 | usecs <<= 1; | |
1043 | } | |
1044 | } | |
64c4757e | 1045 | return 0; |
82b27616 | 1046 | } |
682c7051 | 1047 | fprintf(stderr, Name ": failed to RUN_ARRAY %s: %s\n", |
64c4757e | 1048 | mddev, strerror(errno)); |
583315d9 | 1049 | |
98dbd966 DW |
1050 | if (!enough(content->array.level, content->array.raid_disks, |
1051 | content->array.layout, 1, avail, okcnt)) | |
583315d9 NB |
1052 | fprintf(stderr, Name ": Not enough devices to " |
1053 | "start the array.\n"); | |
98dbd966 DW |
1054 | else if (!enough(content->array.level, |
1055 | content->array.raid_disks, | |
1056 | content->array.layout, clean, | |
583315d9 NB |
1057 | avail, okcnt)) |
1058 | fprintf(stderr, Name ": Not enough devices to " | |
1059 | "start the array while not clean " | |
1060 | "- consider --force.\n"); | |
1061 | ||
7f91af49 | 1062 | if (auto_assem) |
1c203a4b | 1063 | ioctl(mdfd, STOP_ARRAY, NULL); |
7f91af49 | 1064 | close(mdfd); |
64c4757e NB |
1065 | return 1; |
1066 | } | |
82b27616 | 1067 | if (runstop == -1) { |
b8a8ccf9 | 1068 | fprintf(stderr, Name ": %s assembled from %d drive%s", |
52826846 | 1069 | mddev, okcnt, okcnt==1?"":"s"); |
98dbd966 DW |
1070 | if (okcnt != content->array.raid_disks) |
1071 | fprintf(stderr, " (out of %d)", content->array.raid_disks); | |
b8a8ccf9 | 1072 | fprintf(stderr, ", but not started.\n"); |
7f91af49 | 1073 | close(mdfd); |
64c4757e | 1074 | return 0; |
82b27616 | 1075 | } |
4855f95c | 1076 | if (verbose >= -1) { |
dab6685f NB |
1077 | fprintf(stderr, Name ": %s assembled from %d drive%s", mddev, okcnt, okcnt==1?"":"s"); |
1078 | if (sparecnt) | |
1079 | fprintf(stderr, " and %d spare%s", sparecnt, sparecnt==1?"":"s"); | |
98dbd966 DW |
1080 | if (!enough(content->array.level, content->array.raid_disks, |
1081 | content->array.layout, 1, avail, okcnt)) | |
dab6685f | 1082 | fprintf(stderr, " - not enough to start the array.\n"); |
98dbd966 DW |
1083 | else if (!enough(content->array.level, |
1084 | content->array.raid_disks, | |
1085 | content->array.layout, clean, | |
583315d9 NB |
1086 | avail, okcnt)) |
1087 | fprintf(stderr, " - not enough to start the " | |
1088 | "array while not clean - consider " | |
1089 | "--force.\n"); | |
dab6685f | 1090 | else { |
98dbd966 | 1091 | if (req_cnt == content->array.raid_disks) |
dab6685f NB |
1092 | fprintf(stderr, " - need all %d to start it", req_cnt); |
1093 | else | |
98dbd966 | 1094 | fprintf(stderr, " - need %d of %d to start", req_cnt, content->array.raid_disks); |
dab6685f NB |
1095 | fprintf(stderr, " (use --run to insist).\n"); |
1096 | } | |
aa88f531 | 1097 | } |
7f91af49 | 1098 | if (auto_assem) |
1c203a4b | 1099 | ioctl(mdfd, STOP_ARRAY, NULL); |
64c4757e | 1100 | return 1; |
82b27616 | 1101 | } else { |
52826846 NB |
1102 | /* The "chosen_drive" is a good choice, and if necessary, the superblock has |
1103 | * been updated to point to the current locations of devices. | |
1104 | * so we can just start the array | |
82b27616 | 1105 | */ |
cd29a5c8 | 1106 | unsigned long dev; |
213ee40b NB |
1107 | dev = makedev(devices[chosen_drive].i.disk.major, |
1108 | devices[chosen_drive].i.disk.minor); | |
82b27616 NB |
1109 | if (ioctl(mdfd, START_ARRAY, dev)) { |
1110 | fprintf(stderr, Name ": Cannot start array: %s\n", | |
1111 | strerror(errno)); | |
1112 | } | |
aba69144 | 1113 | |
64c4757e | 1114 | } |
7f91af49 | 1115 | close(mdfd); |
e0d19036 | 1116 | return 0; |
64c4757e | 1117 | } |