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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 | ||
82d9eba6 | 53 | int Assemble(struct supertype *st, char *mddev, int mdfd, |
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 | */ | |
583315d9 | 114 | int clean = 0; |
d55e3aef | 115 | int must_close = 0; |
64c4757e | 116 | int old_linux = 0; |
41a3b72a | 117 | int vers = 0; /* Keep gcc quite - it really is initialised */ |
64c4757e NB |
118 | struct { |
119 | char *devname; | |
98c6faba | 120 | unsigned int major, minor; |
64c4757e | 121 | long long events; |
64c4757e | 122 | int uptodate; |
d013a55e | 123 | int state; |
52826846 | 124 | int raid_disk; |
6a41304b | 125 | int disk_nr; |
5787fa49 | 126 | } *devices; |
56eedc1a | 127 | int *best = NULL; /* indexed by raid_disk */ |
98c6faba NB |
128 | unsigned int bestcnt = 0; |
129 | int devcnt = 0; | |
130 | unsigned int okcnt, sparecnt; | |
131 | unsigned int req_cnt; | |
132 | unsigned int i; | |
64c4757e | 133 | int most_recent = 0; |
cd29a5c8 | 134 | int chosen_drive; |
52826846 | 135 | int change = 0; |
cd29a5c8 | 136 | int inargv = 0; |
bf4fb153 | 137 | int bitmap_done; |
589395d6 | 138 | int start_partial_ok = (runstop >= 0) && (force || devlist==NULL || mdfd < 0); |
98c6faba | 139 | unsigned int num_devs; |
5787fa49 | 140 | mddev_dev_t tmpdev; |
4b1ac34b | 141 | struct mdinfo info; |
265e0f17 | 142 | char *avail; |
308e1801 | 143 | int nextspare = 0; |
8a46fe84 | 144 | |
682c7051 | 145 | if (get_linux_version() < 2004000) |
64c4757e NB |
146 | old_linux = 1; |
147 | ||
8a46fe84 NB |
148 | if (mdfd >= 0) { |
149 | vers = md_get_version(mdfd); | |
150 | if (vers <= 0) { | |
151 | fprintf(stderr, Name ": %s appears not to be an md device.\n", mddev); | |
152 | return 1; | |
153 | } | |
154 | if (vers < 9000) { | |
155 | fprintf(stderr, Name ": Assemble requires driver version 0.90.0 or later.\n" | |
156 | " Upgrade your kernel or try --build\n"); | |
157 | return 1; | |
158 | } | |
64c4757e | 159 | |
8a46fe84 NB |
160 | if (ioctl(mdfd, GET_ARRAY_INFO, &info.array)>=0) { |
161 | fprintf(stderr, Name ": device %s already active - cannot assemble it\n", | |
162 | mddev); | |
163 | return 1; | |
164 | } | |
165 | ioctl(mdfd, STOP_ARRAY, NULL); /* just incase it was started but has no content */ | |
166 | } | |
64c4757e | 167 | /* |
52826846 NB |
168 | * If any subdevs are listed, then any that don't |
169 | * match ident are discarded. Remainder must all match and | |
170 | * become the array. | |
171 | * If no subdevs, then we scan all devices in the config file, but | |
172 | * there must be something in the identity | |
64c4757e | 173 | */ |
64c4757e | 174 | |
cd29a5c8 | 175 | if (!devlist && |
52826846 NB |
176 | ident->uuid_set == 0 && |
177 | ident->super_minor < 0 && | |
178 | ident->devices == NULL) { | |
179 | fprintf(stderr, Name ": No identity information available for %s - cannot assemble.\n", | |
8a46fe84 | 180 | mddev ? mddev : "further assembly"); |
52826846 | 181 | return 1; |
64c4757e | 182 | } |
cd29a5c8 | 183 | if (devlist == NULL) |
8aec876d | 184 | devlist = conf_get_devs(); |
da6b5ca9 NB |
185 | else if (mdfd >= 0) |
186 | inargv = 1; | |
64c4757e | 187 | |
60e1bc1a NB |
188 | try_again: |
189 | ||
5787fa49 NB |
190 | tmpdev = devlist; num_devs = 0; |
191 | while (tmpdev) { | |
da6b5ca9 NB |
192 | if (tmpdev->used) |
193 | tmpdev->used = 2; | |
194 | else | |
195 | num_devs++; | |
5787fa49 NB |
196 | tmpdev = tmpdev->next; |
197 | } | |
5787fa49 NB |
198 | devices = malloc(num_devs * sizeof(*devices)); |
199 | ||
82d9eba6 | 200 | if (!st && ident->st) st = ident->st; |
64c4757e | 201 | |
dab6685f | 202 | if (verbose>0) |
82b27616 | 203 | fprintf(stderr, Name ": looking for devices for %s\n", |
8a46fe84 | 204 | mddev ? mddev : "further assembly"); |
82b27616 | 205 | |
811e6cbe NB |
206 | /* first walk the list of devices to find a consistent set |
207 | * that match the criterea, if that is possible. | |
208 | * We flag the one we like with 'used'. | |
209 | */ | |
210 | for (tmpdev = devlist; | |
211 | tmpdev; | |
212 | tmpdev = tmpdev->next) { | |
213 | char *devname = tmpdev->devname; | |
64c4757e NB |
214 | int dfd; |
215 | struct stat stb; | |
3da92f27 | 216 | struct supertype *tst = dup_super(st); |
52826846 | 217 | |
da6b5ca9 NB |
218 | if (tmpdev->used > 1) continue; |
219 | ||
52826846 | 220 | if (ident->devices && |
56eedc1a | 221 | !match_oneof(ident->devices, devname)) { |
6a41304b | 222 | if ((inargv && verbose>=0) || verbose > 0) |
56eedc1a | 223 | fprintf(stderr, Name ": %s is not one of %s\n", devname, ident->devices); |
52826846 | 224 | continue; |
56eedc1a | 225 | } |
4b1ac34b | 226 | |
8b0dabea | 227 | dfd = dev_open(devname, O_RDONLY|O_EXCL); |
64c4757e | 228 | if (dfd < 0) { |
6a41304b | 229 | if ((inargv && verbose >= 0) || verbose > 0) |
682c7051 | 230 | fprintf(stderr, Name ": cannot open device %s: %s\n", |
64c4757e | 231 | devname, strerror(errno)); |
da6b5ca9 | 232 | tmpdev->used = 2; |
52826846 NB |
233 | } else if (fstat(dfd, &stb)< 0) { |
234 | /* Impossible! */ | |
235 | fprintf(stderr, Name ": fstat failed for %s: %s\n", | |
236 | devname, strerror(errno)); | |
da6b5ca9 | 237 | tmpdev->used = 2; |
cd29a5c8 NB |
238 | } else if ((stb.st_mode & S_IFMT) != S_IFBLK) { |
239 | fprintf(stderr, Name ": %s is not a block device.\n", | |
52826846 | 240 | devname); |
da6b5ca9 | 241 | tmpdev->used = 2; |
82d9eba6 | 242 | } else if (!tst && (tst = guess_super(dfd)) == NULL) { |
6a41304b | 243 | if ((inargv && verbose >= 0) || verbose > 0) |
da6b5ca9 NB |
244 | fprintf(stderr, Name ": no recogniseable superblock on %s\n", |
245 | devname); | |
246 | tmpdev->used = 2; | |
3da92f27 | 247 | } else if (tst->ss->load_super(tst,dfd, NULL)) { |
6a41304b | 248 | if ((inargv && verbose >= 0) || verbose > 0) |
682c7051 | 249 | fprintf( stderr, Name ": no RAID superblock on %s\n", |
64c4757e | 250 | devname); |
52826846 | 251 | } else { |
3da92f27 | 252 | tst->ss->getinfo_super(tst, &info); |
64c4757e | 253 | } |
c06487ce | 254 | if (dfd >= 0) close(dfd); |
52826846 | 255 | |
838acbc2 | 256 | if (ident->uuid_set && (!update || strcmp(update, "uuid")!= 0) && |
3da92f27 NB |
257 | (!tst || !tst->sb || |
258 | same_uuid(info.uuid, ident->uuid, tst->ss->swapuuid)==0)) { | |
6a41304b | 259 | if ((inargv && verbose >= 0) || verbose > 0) |
52826846 NB |
260 | fprintf(stderr, Name ": %s has wrong uuid.\n", |
261 | devname); | |
df37ffc0 | 262 | goto loop; |
82b27616 | 263 | } |
c4f12c13 | 264 | if (ident->name[0] && (!update || strcmp(update, "name")!= 0) && |
3da92f27 NB |
265 | (!tst || !tst->sb || |
266 | name_matches(info.name, ident->name, homehost)==0)) { | |
6a41304b | 267 | if ((inargv && verbose >= 0) || verbose > 0) |
947fd4dd NB |
268 | fprintf(stderr, Name ": %s has wrong name.\n", |
269 | devname); | |
df37ffc0 | 270 | goto loop; |
947fd4dd | 271 | } |
98c6faba | 272 | if (ident->super_minor != UnSet && |
3da92f27 NB |
273 | (!tst || !tst->sb || |
274 | ident->super_minor != info.array.md_minor)) { | |
6a41304b | 275 | if ((inargv && verbose >= 0) || verbose > 0) |
52826846 | 276 | fprintf(stderr, Name ": %s has wrong super-minor.\n", |
64c4757e | 277 | devname); |
df37ffc0 | 278 | goto loop; |
64c4757e | 279 | } |
98c6faba | 280 | if (ident->level != UnSet && |
3da92f27 NB |
281 | (!tst || !tst->sb || |
282 | ident->level != info.array.level)) { | |
6a41304b | 283 | if ((inargv && verbose >= 0) || verbose > 0) |
cd29a5c8 NB |
284 | fprintf(stderr, Name ": %s has wrong raid level.\n", |
285 | devname); | |
df37ffc0 | 286 | goto loop; |
cd29a5c8 | 287 | } |
98c6faba | 288 | if (ident->raid_disks != UnSet && |
3da92f27 NB |
289 | (!tst || !tst->sb || |
290 | ident->raid_disks!= info.array.raid_disks)) { | |
6a41304b | 291 | if ((inargv && verbose >= 0) || verbose > 0) |
cd29a5c8 NB |
292 | fprintf(stderr, Name ": %s requires wrong number of drives.\n", |
293 | devname); | |
df37ffc0 | 294 | goto loop; |
cd29a5c8 | 295 | } |
da6b5ca9 | 296 | if (mdfd < 0) { |
3da92f27 | 297 | if (tst == NULL || tst->sb == NULL) |
da6b5ca9 | 298 | continue; |
589395d6 | 299 | if (update == NULL && |
3da92f27 | 300 | tst->ss->match_home(tst, homehost)==0) { |
da6b5ca9 NB |
301 | if ((inargv && verbose >= 0) || verbose > 0) |
302 | fprintf(stderr, Name ": %s is not built for host %s.\n", | |
303 | devname, homehost); | |
304 | /* Auto-assemble, and this is not a usable host */ | |
589395d6 NB |
305 | /* if update != NULL, we are updating the host |
306 | * name... */ | |
df37ffc0 | 307 | goto loop; |
da6b5ca9 NB |
308 | } |
309 | } | |
83b6208e | 310 | /* If we are this far, then we are nearly commited to this device. |
52826846 | 311 | * If the super_block doesn't exist, or doesn't match others, |
83b6208e NB |
312 | * then we probably cannot continue |
313 | * However if one of the arrays is for the homehost, and | |
314 | * the other isn't that can disambiguate. | |
52826846 | 315 | */ |
52826846 | 316 | |
3da92f27 | 317 | if (!tst || !tst->sb) { |
52826846 NB |
318 | fprintf(stderr, Name ": %s has no superblock - assembly aborted\n", |
319 | devname); | |
3da92f27 | 320 | st->ss->free_super(st); |
52826846 NB |
321 | return 1; |
322 | } | |
838acbc2 | 323 | |
83b6208e | 324 | if (st == NULL) |
3da92f27 NB |
325 | st = dup_super(tst); |
326 | if (st->minor_version == -1) | |
327 | st->minor_version = tst->minor_version; | |
83b6208e NB |
328 | if (st->ss != tst->ss || |
329 | st->minor_version != tst->minor_version || | |
64557c33 | 330 | st->ss->compare_super(st, tst) != 0) { |
83b6208e | 331 | /* Some mismatch. If exactly one array matches this host, |
da6b5ca9 NB |
332 | * we can resolve on that one. |
333 | * Or, if we are auto assembling, we just ignore the second | |
334 | * for now. | |
83b6208e | 335 | */ |
da6b5ca9 | 336 | if (mdfd < 0) |
df37ffc0 | 337 | goto loop; |
83b6208e | 338 | if (homehost) { |
3da92f27 NB |
339 | int first = st->ss->match_home(st, homehost); |
340 | int last = tst->ss->match_home(tst, homehost); | |
83b6208e NB |
341 | if (first+last == 1) { |
342 | /* We can do something */ | |
343 | if (first) {/* just ignore this one */ | |
344 | if ((inargv && verbose >= 0) || verbose > 0) | |
345 | fprintf(stderr, Name ": %s misses out due to wrong homehost\n", | |
346 | devname); | |
df37ffc0 | 347 | goto loop; |
83b6208e NB |
348 | } else { /* reject all those sofar */ |
349 | mddev_dev_t td; | |
350 | if ((inargv && verbose >= 0) || verbose > 0) | |
351 | fprintf(stderr, Name ": %s overrides previous devices due to good homehost\n", | |
352 | devname); | |
353 | for (td=devlist; td != tmpdev; td=td->next) | |
354 | if (td->used == 1) | |
355 | td->used = 0; | |
356 | tmpdev->used = 1; | |
df37ffc0 | 357 | goto loop; |
83b6208e NB |
358 | } |
359 | } | |
360 | } | |
52826846 NB |
361 | fprintf(stderr, Name ": superblock on %s doesn't match others - assembly aborted\n", |
362 | devname); | |
3da92f27 NB |
363 | tst->ss->free_super(tst); |
364 | st->ss->free_super(st); | |
52826846 | 365 | return 1; |
64c4757e NB |
366 | } |
367 | ||
811e6cbe | 368 | tmpdev->used = 1; |
df37ffc0 NB |
369 | |
370 | loop: | |
3da92f27 | 371 | tst->ss->free_super(tst); |
811e6cbe NB |
372 | } |
373 | ||
8a46fe84 NB |
374 | if (mdfd < 0) { |
375 | /* So... it is up to me to open the device. | |
376 | * We create a name '/dev/md/XXX' based on the info in the | |
377 | * superblock, and call open_mddev on that | |
378 | */ | |
da6b5ca9 NB |
379 | mdu_array_info_t inf; |
380 | char *c; | |
3da92f27 | 381 | if (!st->sb) { |
d55e3aef | 382 | return 2; |
da6b5ca9 | 383 | } |
3da92f27 | 384 | st->ss->getinfo_super(st, &info); |
da6b5ca9 NB |
385 | c = strchr(info.name, ':'); |
386 | if (c) c++; else c= info.name; | |
41a3b72a NB |
387 | if (isdigit(*c) && ((ident->autof & 7)==4 || (ident->autof&7)==6)) |
388 | /* /dev/md/d0 style for partitionable */ | |
389 | asprintf(&mddev, "/dev/md/d%s", c); | |
390 | else | |
391 | asprintf(&mddev, "/dev/md/%s", c); | |
da6b5ca9 | 392 | mdfd = open_mddev(mddev, ident->autof); |
60e1bc1a | 393 | if (mdfd < 0) { |
3da92f27 | 394 | st->ss->free_super(st); |
60e1bc1a | 395 | free(devices); |
60e1bc1a NB |
396 | goto try_again; |
397 | } | |
da6b5ca9 NB |
398 | vers = md_get_version(mdfd); |
399 | if (ioctl(mdfd, GET_ARRAY_INFO, &inf)==0) { | |
60e1bc1a NB |
400 | for (tmpdev = devlist ; |
401 | tmpdev && tmpdev->used != 1; | |
402 | tmpdev = tmpdev->next) | |
403 | ; | |
da6b5ca9 | 404 | fprintf(stderr, Name ": %s already active, cannot restart it!\n", mddev); |
60e1bc1a NB |
405 | if (tmpdev) |
406 | fprintf(stderr, Name ": %s needed for %s...\n", | |
407 | mddev, tmpdev->devname); | |
da6b5ca9 | 408 | close(mdfd); |
60e1bc1a | 409 | mdfd = -1; |
3da92f27 | 410 | st->ss->free_super(st); |
60e1bc1a | 411 | free(devices); |
60e1bc1a | 412 | goto try_again; |
da6b5ca9 | 413 | } |
d55e3aef | 414 | must_close = 1; |
8a46fe84 NB |
415 | } |
416 | ||
811e6cbe | 417 | /* Ok, no bad inconsistancy, we can try updating etc */ |
bf4fb153 | 418 | bitmap_done = 0; |
da6b5ca9 | 419 | for (tmpdev = devlist; tmpdev; tmpdev=tmpdev->next) if (tmpdev->used == 1) { |
811e6cbe NB |
420 | char *devname = tmpdev->devname; |
421 | struct stat stb; | |
5787fa49 | 422 | /* looks like a good enough match to update the super block if needed */ |
d1f1011b | 423 | #ifndef MDASSEMBLE |
5787fa49 | 424 | if (update) { |
811e6cbe | 425 | int dfd; |
4b1ac34b NB |
426 | /* prepare useful information in info structures */ |
427 | struct stat stb2; | |
3da92f27 | 428 | struct supertype *tst; |
4b1ac34b | 429 | fstat(mdfd, &stb2); |
7d99579f NB |
430 | |
431 | if (strcmp(update, "uuid")==0 && | |
432 | !ident->uuid_set) { | |
433 | int rfd; | |
434 | if ((rfd = open("/dev/urandom", O_RDONLY)) < 0 || | |
435 | read(rfd, ident->uuid, 16) != 16) { | |
436 | *(__u32*)(ident->uuid) = random(); | |
437 | *(__u32*)(ident->uuid+1) = random(); | |
438 | *(__u32*)(ident->uuid+2) = random(); | |
439 | *(__u32*)(ident->uuid+3) = random(); | |
440 | } | |
441 | if (rfd >= 0) close(rfd); | |
7d99579f | 442 | } |
811e6cbe NB |
443 | dfd = dev_open(devname, O_RDWR|O_EXCL); |
444 | ||
0430ed48 NB |
445 | remove_partitions(dfd); |
446 | ||
3da92f27 NB |
447 | tst = dup_super(st); |
448 | tst->ss->load_super(tst, dfd, NULL); | |
449 | tst->ss->getinfo_super(tst, &info); | |
811e6cbe | 450 | |
7d99579f | 451 | memcpy(info.uuid, ident->uuid, 16); |
e5eac01f | 452 | strcpy(info.name, ident->name); |
811e6cbe NB |
453 | info.array.md_minor = minor(stb2.st_rdev); |
454 | ||
3da92f27 NB |
455 | tst->ss->update_super(tst, &info, update, |
456 | devname, verbose, | |
457 | ident->uuid_set, homehost); | |
e5eac01f NB |
458 | if (strcmp(update, "uuid")==0 && |
459 | !ident->uuid_set) { | |
460 | ident->uuid_set = 1; | |
461 | memcpy(ident->uuid, info.uuid, 16); | |
462 | } | |
b8a8ccf9 | 463 | if (dfd < 0) |
5787fa49 NB |
464 | fprintf(stderr, Name ": Cannot open %s for superblock update\n", |
465 | devname); | |
3da92f27 | 466 | else if (tst->ss->store_super(tst, dfd)) |
5787fa49 NB |
467 | fprintf(stderr, Name ": Could not re-write superblock on %s.\n", |
468 | devname); | |
469 | if (dfd >= 0) | |
470 | close(dfd); | |
8131b493 NB |
471 | |
472 | if (strcmp(update, "uuid")==0 && | |
bf4fb153 | 473 | ident->bitmap_fd >= 0 && !bitmap_done) { |
3da92f27 NB |
474 | if (bitmap_update_uuid(ident->bitmap_fd, |
475 | info.uuid, | |
476 | tst->ss->swapuuid) != 0) | |
bf4fb153 NB |
477 | fprintf(stderr, Name ": Could not update uuid on external bitmap.\n"); |
478 | else | |
479 | bitmap_done = 1; | |
480 | } | |
3da92f27 | 481 | tst->ss->free_super(tst); |
d1f1011b NB |
482 | } else |
483 | #endif | |
484 | { | |
3da92f27 | 485 | struct supertype *tst = dup_super(st);; |
da6b5ca9 NB |
486 | int dfd; |
487 | dfd = dev_open(devname, O_RDWR|O_EXCL); | |
488 | ||
0430ed48 NB |
489 | remove_partitions(dfd); |
490 | ||
3da92f27 NB |
491 | tst->ss->load_super(tst, dfd, NULL); |
492 | tst->ss->getinfo_super(tst, &info); | |
493 | tst->ss->free_super(tst); | |
da6b5ca9 | 494 | close(dfd); |
5787fa49 NB |
495 | } |
496 | ||
811e6cbe NB |
497 | stat(devname, &stb); |
498 | ||
dab6685f | 499 | if (verbose > 0) |
cd29a5c8 | 500 | fprintf(stderr, Name ": %s is identified as a member of %s, slot %d.\n", |
4b1ac34b | 501 | devname, mddev, info.disk.raid_disk); |
64c4757e | 502 | devices[devcnt].devname = devname; |
0df46c2a NB |
503 | devices[devcnt].major = major(stb.st_rdev); |
504 | devices[devcnt].minor = minor(stb.st_rdev); | |
4b1ac34b NB |
505 | devices[devcnt].events = info.events; |
506 | devices[devcnt].raid_disk = info.disk.raid_disk; | |
6a41304b | 507 | devices[devcnt].disk_nr = info.disk.number; |
64c4757e | 508 | devices[devcnt].uptodate = 0; |
4b1ac34b | 509 | devices[devcnt].state = info.disk.state; |
64c4757e NB |
510 | if (most_recent < devcnt) { |
511 | if (devices[devcnt].events | |
512 | > devices[most_recent].events) | |
513 | most_recent = devcnt; | |
514 | } | |
b8a8ccf9 | 515 | if (info.array.level == -4) |
5787fa49 NB |
516 | /* with multipath, the raid_disk from the superblock is meaningless */ |
517 | i = devcnt; | |
518 | else | |
519 | i = devices[devcnt].raid_disk; | |
308e1801 NB |
520 | if (i+1 == 0) { |
521 | if (nextspare < info.array.raid_disks) | |
522 | nextspare = info.array.raid_disks; | |
523 | i = nextspare++; | |
08110d41 NB |
524 | } else { |
525 | if (i >= info.array.raid_disks && | |
526 | i >= nextspare) | |
527 | nextspare = i+1; | |
308e1801 | 528 | } |
98c6faba | 529 | if (i < 10000) { |
56eedc1a | 530 | if (i >= bestcnt) { |
98c6faba | 531 | unsigned int newbestcnt = i+10; |
56eedc1a | 532 | int *newbest = malloc(sizeof(int)*newbestcnt); |
98c6faba | 533 | unsigned int c; |
56eedc1a NB |
534 | for (c=0; c < newbestcnt; c++) |
535 | if (c < bestcnt) | |
536 | newbest[c] = best[c]; | |
537 | else | |
538 | newbest[c] = -1; | |
539 | if (best)free(best); | |
540 | best = newbest; | |
541 | bestcnt = newbestcnt; | |
542 | } | |
6a255b69 NB |
543 | if (best[i] >=0 && |
544 | devices[best[i]].events == devices[devcnt].events && | |
545 | devices[best[i]].minor != devices[devcnt].minor && | |
546 | st->ss->major == 0 && | |
547 | info.array.level != -4) { | |
548 | /* two different devices with identical superblock. | |
549 | * Could be a mis-detection caused by overlapping | |
550 | * partitions. fail-safe. | |
551 | */ | |
552 | fprintf(stderr, Name ": WARNING %s and %s appear" | |
553 | " to have very similar superblocks.\n" | |
554 | " If they are really different, " | |
555 | "please --zero the superblock on one\n" | |
d2df86e0 NB |
556 | " If they are the same or overlap," |
557 | " please remove one from %s.\n", | |
558 | devices[best[i]].devname, devname, | |
559 | inargv ? "the list" : | |
560 | "the\n DEVICE list in mdadm.conf" | |
561 | ); | |
6a255b69 NB |
562 | if (must_close) close(mdfd); |
563 | return 1; | |
564 | } | |
52826846 NB |
565 | if (best[i] == -1 |
566 | || devices[best[i]].events < devices[devcnt].events) | |
567 | best[i] = devcnt; | |
56eedc1a | 568 | } |
64c4757e | 569 | devcnt++; |
df37ffc0 | 570 | } |
4b1ac34b | 571 | |
586ed405 NB |
572 | if (update && strcmp(update, "byteorder")==0) |
573 | st->minor_version = 90; | |
574 | ||
64c4757e | 575 | if (devcnt == 0) { |
682c7051 | 576 | fprintf(stderr, Name ": no devices found for %s\n", |
64c4757e | 577 | mddev); |
3da92f27 | 578 | st->ss->free_super(st); |
d55e3aef | 579 | if (must_close) close(mdfd); |
64c4757e NB |
580 | return 1; |
581 | } | |
4b1ac34b | 582 | |
3da92f27 | 583 | st->ss->getinfo_super(st, &info); |
583315d9 | 584 | clean = info.array.state & 1; |
4b1ac34b | 585 | |
64c4757e NB |
586 | /* now we have some devices that might be suitable. |
587 | * I wonder how many | |
588 | */ | |
265e0f17 NB |
589 | avail = malloc(info.array.raid_disks); |
590 | memset(avail, 0, info.array.raid_disks); | |
64c4757e | 591 | okcnt = 0; |
52826846 | 592 | sparecnt=0; |
56eedc1a | 593 | for (i=0; i< bestcnt ;i++) { |
64c4757e | 594 | int j = best[i]; |
ee04451c NB |
595 | int event_margin = 1; /* always allow a difference of '1' |
596 | * like the kernel does | |
597 | */ | |
64c4757e | 598 | if (j < 0) continue; |
d013a55e NB |
599 | /* note: we ignore error flags in multipath arrays |
600 | * as they don't make sense | |
601 | */ | |
4b1ac34b | 602 | if (info.array.level != -4) |
aa88f531 NB |
603 | if (!(devices[j].state & (1<<MD_DISK_SYNC))) { |
604 | if (!(devices[j].state & (1<<MD_DISK_FAULTY))) | |
605 | sparecnt++; | |
d013a55e | 606 | continue; |
aa88f531 | 607 | } |
cd29a5c8 | 608 | if (devices[j].events+event_margin >= |
64c4757e NB |
609 | devices[most_recent].events) { |
610 | devices[j].uptodate = 1; | |
265e0f17 | 611 | if (i < info.array.raid_disks) { |
52826846 | 612 | okcnt++; |
265e0f17 NB |
613 | avail[i]=1; |
614 | } else | |
52826846 | 615 | sparecnt++; |
64c4757e NB |
616 | } |
617 | } | |
265e0f17 | 618 | while (force && !enough(info.array.level, info.array.raid_disks, |
583315d9 | 619 | info.array.layout, 1, |
265e0f17 | 620 | avail, okcnt)) { |
64c4757e NB |
621 | /* Choose the newest best drive which is |
622 | * not up-to-date, update the superblock | |
623 | * and add it. | |
624 | */ | |
52826846 | 625 | int fd; |
3da92f27 | 626 | struct supertype *tst; |
c5a6f9a6 | 627 | long long current_events; |
cd29a5c8 | 628 | chosen_drive = -1; |
4b1ac34b | 629 | for (i=0; i<info.array.raid_disks && i < bestcnt; i++) { |
52826846 NB |
630 | int j = best[i]; |
631 | if (j>=0 && | |
632 | !devices[j].uptodate && | |
633 | devices[j].events > 0 && | |
634 | (chosen_drive < 0 || | |
635 | devices[j].events > devices[chosen_drive].events)) | |
636 | chosen_drive = j; | |
637 | } | |
638 | if (chosen_drive < 0) | |
639 | break; | |
c5a6f9a6 NB |
640 | current_events = devices[chosen_drive].events; |
641 | add_another: | |
dab6685f NB |
642 | if (verbose >= 0) |
643 | fprintf(stderr, Name ": forcing event count in %s(%d) from %d upto %d\n", | |
644 | devices[chosen_drive].devname, devices[chosen_drive].raid_disk, | |
645 | (int)(devices[chosen_drive].events), | |
646 | (int)(devices[most_recent].events)); | |
8b0dabea | 647 | fd = dev_open(devices[chosen_drive].devname, O_RDWR|O_EXCL); |
52826846 NB |
648 | if (fd < 0) { |
649 | fprintf(stderr, Name ": Couldn't open %s for write - not updating\n", | |
650 | devices[chosen_drive].devname); | |
651 | devices[chosen_drive].events = 0; | |
652 | continue; | |
653 | } | |
3da92f27 NB |
654 | tst = dup_super(st); |
655 | if (tst->ss->load_super(st,fd, NULL)) { | |
52826846 NB |
656 | close(fd); |
657 | fprintf(stderr, Name ": RAID superblock disappeared from %s - not updating.\n", | |
658 | devices[chosen_drive].devname); | |
659 | devices[chosen_drive].events = 0; | |
660 | continue; | |
661 | } | |
4b1ac34b | 662 | info.events = devices[most_recent].events; |
3da92f27 | 663 | tst->ss->update_super(tst, &info, "force-one", |
67a8c82d NB |
664 | devices[chosen_drive].devname, verbose, |
665 | 0, NULL); | |
4b1ac34b | 666 | |
3da92f27 | 667 | if (tst->ss->store_super(tst, fd)) { |
52826846 NB |
668 | close(fd); |
669 | fprintf(stderr, Name ": Could not re-write superblock on %s\n", | |
670 | devices[chosen_drive].devname); | |
671 | devices[chosen_drive].events = 0; | |
3da92f27 | 672 | tst->ss->free_super(tst); |
52826846 NB |
673 | continue; |
674 | } | |
675 | close(fd); | |
676 | devices[chosen_drive].events = devices[most_recent].events; | |
677 | devices[chosen_drive].uptodate = 1; | |
265e0f17 | 678 | avail[chosen_drive] = 1; |
52826846 | 679 | okcnt++; |
3da92f27 | 680 | tst->ss->free_super(tst); |
c5a6f9a6 NB |
681 | |
682 | /* If there are any other drives of the same vintage, | |
683 | * add them in as well. We can't lose and we might gain | |
684 | */ | |
685 | for (i=0; i<info.array.raid_disks && i < bestcnt ; i++) { | |
686 | int j = best[i]; | |
687 | if (j >= 0 && | |
688 | !devices[j].uptodate && | |
689 | devices[j].events > 0 && | |
690 | devices[j].events == current_events) { | |
691 | chosen_drive = j; | |
692 | goto add_another; | |
693 | } | |
694 | } | |
64c4757e | 695 | } |
52826846 NB |
696 | |
697 | /* Now we want to look at the superblock which the kernel will base things on | |
698 | * and compare the devices that we think are working with the devices that the | |
699 | * superblock thinks are working. | |
700 | * If there are differences and --force is given, then update this chosen | |
701 | * superblock. | |
702 | */ | |
cd29a5c8 | 703 | chosen_drive = -1; |
3da92f27 | 704 | st->ss->free_super(st); |
56eedc1a | 705 | for (i=0; chosen_drive < 0 && i<bestcnt; i++) { |
52826846 NB |
706 | int j = best[i]; |
707 | int fd; | |
4b1ac34b | 708 | |
52826846 NB |
709 | if (j<0) |
710 | continue; | |
711 | if (!devices[j].uptodate) | |
712 | continue; | |
713 | chosen_drive = j; | |
8b0dabea | 714 | if ((fd=dev_open(devices[j].devname, O_RDONLY|O_EXCL))< 0) { |
52826846 NB |
715 | fprintf(stderr, Name ": Cannot open %s: %s\n", |
716 | devices[j].devname, strerror(errno)); | |
d55e3aef | 717 | if (must_close) close(mdfd); |
52826846 NB |
718 | return 1; |
719 | } | |
3da92f27 | 720 | if (st->ss->load_super(st,fd, NULL)) { |
52826846 NB |
721 | close(fd); |
722 | fprintf(stderr, Name ": RAID superblock has disappeared from %s\n", | |
723 | devices[j].devname); | |
d55e3aef | 724 | if (must_close) close(mdfd); |
52826846 NB |
725 | return 1; |
726 | } | |
727 | close(fd); | |
728 | } | |
3da92f27 | 729 | if (st->sb == NULL) { |
4b1ac34b | 730 | fprintf(stderr, Name ": No suitable drives found for %s\n", mddev); |
d55e3aef | 731 | if (must_close) close(mdfd); |
4b1ac34b NB |
732 | return 1; |
733 | } | |
3da92f27 | 734 | st->ss->getinfo_super(st, &info); |
56eedc1a | 735 | for (i=0; i<bestcnt; i++) { |
52826846 | 736 | int j = best[i]; |
98c6faba | 737 | unsigned int desired_state; |
11a3e71d | 738 | |
4b1ac34b | 739 | if (i < info.array.raid_disks) |
11a3e71d NB |
740 | desired_state = (1<<MD_DISK_ACTIVE) | (1<<MD_DISK_SYNC); |
741 | else | |
742 | desired_state = 0; | |
743 | ||
52826846 NB |
744 | if (j<0) |
745 | continue; | |
746 | if (!devices[j].uptodate) | |
747 | continue; | |
6a41304b | 748 | info.disk.number = devices[j].disk_nr; |
fbf8a0b7 | 749 | info.disk.raid_disk = i; |
4b1ac34b NB |
750 | info.disk.state = desired_state; |
751 | ||
52826846 | 752 | if (devices[j].uptodate && |
3da92f27 | 753 | st->ss->update_super(st, &info, "assemble", NULL, |
68c7d6d7 | 754 | verbose, 0, NULL)) { |
52826846 | 755 | if (force) { |
dab6685f NB |
756 | if (verbose >= 0) |
757 | fprintf(stderr, Name ": " | |
758 | "clearing FAULTY flag for device %d in %s for %s\n", | |
759 | j, mddev, devices[j].devname); | |
4b1ac34b | 760 | change = 1; |
52826846 | 761 | } else { |
dab6685f NB |
762 | if (verbose >= -1) |
763 | fprintf(stderr, Name ": " | |
764 | "device %d in %s has wrong state in superblock, but %s seems ok\n", | |
765 | i, mddev, devices[j].devname); | |
52826846 NB |
766 | } |
767 | } | |
4b1ac34b | 768 | #if 0 |
52826846 NB |
769 | if (!devices[j].uptodate && |
770 | !(super.disks[i].state & (1 << MD_DISK_FAULTY))) { | |
771 | fprintf(stderr, Name ": devices %d of %s is not marked FAULTY in superblock, but cannot be found\n", | |
772 | i, mddev); | |
773 | } | |
4b1ac34b | 774 | #endif |
52826846 | 775 | } |
c5a6f9a6 NB |
776 | if (force && !clean && |
777 | !enough(info.array.level, info.array.raid_disks, | |
778 | info.array.layout, clean, | |
779 | avail, okcnt)) { | |
3da92f27 | 780 | change += st->ss->update_super(st, &info, "force-array", |
67a8c82d NB |
781 | devices[chosen_drive].devname, verbose, |
782 | 0, NULL); | |
583315d9 | 783 | clean = 1; |
d013a55e | 784 | } |
52826846 | 785 | |
4b1ac34b | 786 | if (change) { |
52826846 | 787 | int fd; |
8b0dabea | 788 | fd = dev_open(devices[chosen_drive].devname, O_RDWR|O_EXCL); |
52826846 | 789 | if (fd < 0) { |
353632d9 | 790 | fprintf(stderr, Name ": Could not open %s for write - cannot Assemble array.\n", |
52826846 | 791 | devices[chosen_drive].devname); |
d55e3aef | 792 | if (must_close) close(mdfd); |
52826846 NB |
793 | return 1; |
794 | } | |
3da92f27 | 795 | if (st->ss->store_super(st, fd)) { |
52826846 NB |
796 | close(fd); |
797 | fprintf(stderr, Name ": Could not re-write superblock on %s\n", | |
798 | devices[chosen_drive].devname); | |
d55e3aef | 799 | if (must_close) close(mdfd); |
52826846 NB |
800 | return 1; |
801 | } | |
802 | close(fd); | |
52826846 NB |
803 | } |
804 | ||
353632d9 NB |
805 | /* If we are in the middle of a reshape we may need to restore saved data |
806 | * that was moved aside due to the reshape overwriting live data | |
807 | * The code of doing this lives in Grow.c | |
808 | */ | |
39c5a909 | 809 | #ifndef MDASSEMBLE |
353632d9 NB |
810 | if (info.reshape_active) { |
811 | int err = 0; | |
812 | int *fdlist = malloc(sizeof(int)* bestcnt); | |
813 | for (i=0; i<bestcnt; i++) { | |
814 | int j = best[i]; | |
815 | if (j >= 0) { | |
816 | fdlist[i] = dev_open(devices[j].devname, O_RDWR|O_EXCL); | |
817 | if (fdlist[i] < 0) { | |
818 | fprintf(stderr, Name ": Could not open %s for write - cannot Assemble array.\n", | |
819 | devices[j].devname); | |
820 | err = 1; | |
821 | break; | |
822 | } | |
823 | } else | |
824 | fdlist[i] = -1; | |
825 | } | |
826 | if (!err) | |
06b0d786 | 827 | err = Grow_restart(st, &info, fdlist, bestcnt, backup_file); |
353632d9 NB |
828 | while (i>0) { |
829 | i--; | |
830 | if (fdlist[i]>=0) close(fdlist[i]); | |
831 | } | |
832 | if (err) { | |
833 | fprintf(stderr, Name ": Failed to restore critical section for reshape, sorry.\n"); | |
d55e3aef | 834 | if (must_close) close(mdfd); |
353632d9 NB |
835 | return err; |
836 | } | |
837 | } | |
39c5a909 | 838 | #endif |
aa88f531 NB |
839 | /* count number of in-sync devices according to the superblock. |
840 | * We must have this number to start the array without -s or -R | |
841 | */ | |
4b1ac34b | 842 | req_cnt = info.array.working_disks; |
aa88f531 | 843 | |
64c4757e NB |
844 | /* Almost ready to actually *do* something */ |
845 | if (!old_linux) { | |
fbf8a0b7 NB |
846 | int rv; |
847 | if ((vers % 100) >= 1) { /* can use different versions */ | |
848 | mdu_array_info_t inf; | |
849 | memset(&inf, 0, sizeof(inf)); | |
850 | inf.major_version = st->ss->major; | |
851 | inf.minor_version = st->minor_version; | |
852 | rv = ioctl(mdfd, SET_ARRAY_INFO, &inf); | |
b8a8ccf9 | 853 | } else |
fbf8a0b7 NB |
854 | rv = ioctl(mdfd, SET_ARRAY_INFO, NULL); |
855 | ||
856 | if (rv) { | |
682c7051 | 857 | fprintf(stderr, Name ": SET_ARRAY_INFO failed for %s: %s\n", |
64c4757e | 858 | mddev, strerror(errno)); |
d55e3aef | 859 | if (must_close) close(mdfd); |
64c4757e NB |
860 | return 1; |
861 | } | |
11484a63 | 862 | if (ident->bitmap_fd >= 0) { |
c82f047c NB |
863 | if (ioctl(mdfd, SET_BITMAP_FILE, ident->bitmap_fd) != 0) { |
864 | fprintf(stderr, Name ": SET_BITMAP_FILE failed.\n"); | |
d55e3aef | 865 | if (must_close) close(mdfd); |
c82f047c NB |
866 | return 1; |
867 | } | |
7ef02d01 NB |
868 | } else if (ident->bitmap_file) { |
869 | /* From config file */ | |
870 | int bmfd = open(ident->bitmap_file, O_RDWR); | |
871 | if (bmfd < 0) { | |
872 | fprintf(stderr, Name ": Could not open bitmap file %s\n", | |
873 | ident->bitmap_file); | |
d55e3aef | 874 | if (must_close) close(mdfd); |
7ef02d01 NB |
875 | return 1; |
876 | } | |
877 | if (ioctl(mdfd, SET_BITMAP_FILE, bmfd) != 0) { | |
878 | fprintf(stderr, Name ": Failed to set bitmapfile for %s\n", mddev); | |
879 | close(bmfd); | |
d55e3aef | 880 | if (must_close) close(mdfd); |
7ef02d01 NB |
881 | return 1; |
882 | } | |
883 | close(bmfd); | |
c82f047c | 884 | } |
7ef02d01 | 885 | |
52826846 | 886 | /* First, add the raid disks, but add the chosen one last */ |
56eedc1a | 887 | for (i=0; i<= bestcnt; i++) { |
52826846 | 888 | int j; |
56eedc1a | 889 | if (i < bestcnt) { |
52826846 NB |
890 | j = best[i]; |
891 | if (j == chosen_drive) | |
892 | continue; | |
893 | } else | |
894 | j = chosen_drive; | |
895 | ||
56eedc1a | 896 | if (j >= 0 /* && devices[j].uptodate */) { |
64c4757e NB |
897 | mdu_disk_info_t disk; |
898 | memset(&disk, 0, sizeof(disk)); | |
899 | disk.major = devices[j].major; | |
900 | disk.minor = devices[j].minor; | |
901 | if (ioctl(mdfd, ADD_NEW_DISK, &disk)!=0) { | |
682c7051 | 902 | fprintf(stderr, Name ": failed to add %s to %s: %s\n", |
64c4757e NB |
903 | devices[j].devname, |
904 | mddev, | |
905 | strerror(errno)); | |
4b1ac34b | 906 | if (i < info.array.raid_disks || i == bestcnt) |
52826846 NB |
907 | okcnt--; |
908 | else | |
909 | sparecnt--; | |
dab6685f | 910 | } else if (verbose > 0) |
52826846 NB |
911 | fprintf(stderr, Name ": added %s to %s as %d\n", |
912 | devices[j].devname, mddev, devices[j].raid_disk); | |
dab6685f | 913 | } else if (verbose > 0 && i < info.array.raid_disks) |
682c7051 | 914 | fprintf(stderr, Name ": no uptodate device for slot %d of %s\n", |
64c4757e NB |
915 | i, mddev); |
916 | } | |
aba69144 | 917 | |
64c4757e | 918 | if (runstop == 1 || |
b8a8ccf9 | 919 | (runstop <= 0 && |
583315d9 NB |
920 | ( enough(info.array.level, info.array.raid_disks, |
921 | info.array.layout, clean, avail, okcnt) && | |
aa88f531 NB |
922 | (okcnt >= req_cnt || start_partial_ok) |
923 | ))) { | |
82b27616 | 924 | if (ioctl(mdfd, RUN_ARRAY, NULL)==0) { |
dab6685f NB |
925 | if (verbose >= 0) { |
926 | fprintf(stderr, Name ": %s has been started with %d drive%s", | |
927 | mddev, okcnt, okcnt==1?"":"s"); | |
b8a8ccf9 | 928 | if (okcnt < info.array.raid_disks) |
dab6685f NB |
929 | fprintf(stderr, " (out of %d)", info.array.raid_disks); |
930 | if (sparecnt) | |
931 | fprintf(stderr, " and %d spare%s", sparecnt, sparecnt==1?"":"s"); | |
932 | fprintf(stderr, ".\n"); | |
933 | } | |
589395d6 NB |
934 | if (must_close) { |
935 | int usecs = 1; | |
936 | close(mdfd); | |
937 | /* There is a nasty race with 'mdadm --monitor'. | |
938 | * If it opens this device before we close it, | |
939 | * it gets an incomplete open on which IO | |
940 | * doesn't work and the capacity if wrong. | |
941 | * If we reopen (to check for layered devices) | |
942 | * before --monitor closes, we loose. | |
943 | * | |
944 | * So: wait upto 1 second for there to be | |
945 | * a non-zero capacity. | |
946 | */ | |
947 | while (usecs < 1000) { | |
948 | mdfd = open(mddev, O_RDONLY); | |
949 | if (mdfd >= 0) { | |
beae1dfe NB |
950 | unsigned long long size; |
951 | if (get_dev_size(mdfd, NULL, &size) && | |
589395d6 NB |
952 | size > 0) |
953 | break; | |
954 | close(mdfd); | |
955 | } | |
956 | usleep(usecs); | |
957 | usecs <<= 1; | |
958 | } | |
959 | } | |
64c4757e | 960 | return 0; |
82b27616 | 961 | } |
682c7051 | 962 | fprintf(stderr, Name ": failed to RUN_ARRAY %s: %s\n", |
64c4757e | 963 | mddev, strerror(errno)); |
583315d9 NB |
964 | |
965 | if (!enough(info.array.level, info.array.raid_disks, | |
966 | info.array.layout, 1, avail, okcnt)) | |
967 | fprintf(stderr, Name ": Not enough devices to " | |
968 | "start the array.\n"); | |
969 | else if (!enough(info.array.level, | |
970 | info.array.raid_disks, | |
971 | info.array.layout, clean, | |
972 | avail, okcnt)) | |
973 | fprintf(stderr, Name ": Not enough devices to " | |
974 | "start the array while not clean " | |
975 | "- consider --force.\n"); | |
976 | ||
d55e3aef | 977 | if (must_close) close(mdfd); |
64c4757e NB |
978 | return 1; |
979 | } | |
82b27616 | 980 | if (runstop == -1) { |
b8a8ccf9 | 981 | fprintf(stderr, Name ": %s assembled from %d drive%s", |
52826846 | 982 | mddev, okcnt, okcnt==1?"":"s"); |
b8a8ccf9 NB |
983 | if (okcnt != info.array.raid_disks) |
984 | fprintf(stderr, " (out of %d)", info.array.raid_disks); | |
985 | fprintf(stderr, ", but not started.\n"); | |
d55e3aef | 986 | if (must_close) close(mdfd); |
64c4757e | 987 | return 0; |
82b27616 | 988 | } |
4855f95c | 989 | if (verbose >= -1) { |
dab6685f NB |
990 | fprintf(stderr, Name ": %s assembled from %d drive%s", mddev, okcnt, okcnt==1?"":"s"); |
991 | if (sparecnt) | |
992 | fprintf(stderr, " and %d spare%s", sparecnt, sparecnt==1?"":"s"); | |
583315d9 NB |
993 | if (!enough(info.array.level, info.array.raid_disks, |
994 | info.array.layout, 1, avail, okcnt)) | |
dab6685f | 995 | fprintf(stderr, " - not enough to start the array.\n"); |
583315d9 NB |
996 | else if (!enough(info.array.level, |
997 | info.array.raid_disks, | |
998 | info.array.layout, clean, | |
999 | avail, okcnt)) | |
1000 | fprintf(stderr, " - not enough to start the " | |
1001 | "array while not clean - consider " | |
1002 | "--force.\n"); | |
dab6685f NB |
1003 | else { |
1004 | if (req_cnt == info.array.raid_disks) | |
1005 | fprintf(stderr, " - need all %d to start it", req_cnt); | |
1006 | else | |
1007 | fprintf(stderr, " - need %d of %d to start", req_cnt, info.array.raid_disks); | |
1008 | fprintf(stderr, " (use --run to insist).\n"); | |
1009 | } | |
aa88f531 | 1010 | } |
d55e3aef | 1011 | if (must_close) close(mdfd); |
64c4757e | 1012 | return 1; |
82b27616 | 1013 | } else { |
52826846 NB |
1014 | /* The "chosen_drive" is a good choice, and if necessary, the superblock has |
1015 | * been updated to point to the current locations of devices. | |
1016 | * so we can just start the array | |
82b27616 | 1017 | */ |
cd29a5c8 | 1018 | unsigned long dev; |
0df46c2a | 1019 | dev = makedev(devices[chosen_drive].major, |
82b27616 NB |
1020 | devices[chosen_drive].minor); |
1021 | if (ioctl(mdfd, START_ARRAY, dev)) { | |
1022 | fprintf(stderr, Name ": Cannot start array: %s\n", | |
1023 | strerror(errno)); | |
1024 | } | |
aba69144 | 1025 | |
64c4757e | 1026 | } |
d55e3aef | 1027 | if (must_close) close(mdfd); |
e0d19036 | 1028 | return 0; |
64c4757e | 1029 | } |