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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; | |
213ee40b NB |
120 | int uptodate; /* set once we decide that this device is as |
121 | * recent as everything else in the array. | |
122 | */ | |
123 | struct mdinfo i; | |
5787fa49 | 124 | } *devices; |
56eedc1a | 125 | int *best = NULL; /* indexed by raid_disk */ |
98c6faba NB |
126 | unsigned int bestcnt = 0; |
127 | int devcnt = 0; | |
128 | unsigned int okcnt, sparecnt; | |
129 | unsigned int req_cnt; | |
130 | unsigned int i; | |
64c4757e | 131 | int most_recent = 0; |
cd29a5c8 | 132 | int chosen_drive; |
52826846 | 133 | int change = 0; |
cd29a5c8 | 134 | int inargv = 0; |
bf4fb153 | 135 | int bitmap_done; |
589395d6 | 136 | int start_partial_ok = (runstop >= 0) && (force || devlist==NULL || mdfd < 0); |
98c6faba | 137 | unsigned int num_devs; |
5787fa49 | 138 | mddev_dev_t tmpdev; |
4b1ac34b | 139 | struct mdinfo info; |
265e0f17 | 140 | char *avail; |
308e1801 | 141 | int nextspare = 0; |
8a46fe84 | 142 | |
682c7051 | 143 | if (get_linux_version() < 2004000) |
64c4757e NB |
144 | old_linux = 1; |
145 | ||
8a46fe84 NB |
146 | if (mdfd >= 0) { |
147 | vers = md_get_version(mdfd); | |
148 | if (vers <= 0) { | |
149 | fprintf(stderr, Name ": %s appears not to be an md device.\n", mddev); | |
150 | return 1; | |
151 | } | |
152 | if (vers < 9000) { | |
153 | fprintf(stderr, Name ": Assemble requires driver version 0.90.0 or later.\n" | |
154 | " Upgrade your kernel or try --build\n"); | |
155 | return 1; | |
156 | } | |
64c4757e | 157 | |
8a46fe84 NB |
158 | if (ioctl(mdfd, GET_ARRAY_INFO, &info.array)>=0) { |
159 | fprintf(stderr, Name ": device %s already active - cannot assemble it\n", | |
160 | mddev); | |
161 | return 1; | |
162 | } | |
163 | ioctl(mdfd, STOP_ARRAY, NULL); /* just incase it was started but has no content */ | |
164 | } | |
64c4757e | 165 | /* |
52826846 NB |
166 | * If any subdevs are listed, then any that don't |
167 | * match ident are discarded. Remainder must all match and | |
168 | * become the array. | |
169 | * If no subdevs, then we scan all devices in the config file, but | |
170 | * there must be something in the identity | |
64c4757e | 171 | */ |
64c4757e | 172 | |
cd29a5c8 | 173 | if (!devlist && |
52826846 NB |
174 | ident->uuid_set == 0 && |
175 | ident->super_minor < 0 && | |
176 | ident->devices == NULL) { | |
177 | fprintf(stderr, Name ": No identity information available for %s - cannot assemble.\n", | |
8a46fe84 | 178 | mddev ? mddev : "further assembly"); |
52826846 | 179 | return 1; |
64c4757e | 180 | } |
cd29a5c8 | 181 | if (devlist == NULL) |
8aec876d | 182 | devlist = conf_get_devs(); |
da6b5ca9 NB |
183 | else if (mdfd >= 0) |
184 | inargv = 1; | |
64c4757e | 185 | |
60e1bc1a NB |
186 | try_again: |
187 | ||
5787fa49 NB |
188 | tmpdev = devlist; num_devs = 0; |
189 | while (tmpdev) { | |
da6b5ca9 NB |
190 | if (tmpdev->used) |
191 | tmpdev->used = 2; | |
192 | else | |
193 | num_devs++; | |
5787fa49 NB |
194 | tmpdev = tmpdev->next; |
195 | } | |
5787fa49 NB |
196 | devices = malloc(num_devs * sizeof(*devices)); |
197 | ||
82d9eba6 | 198 | if (!st && ident->st) st = ident->st; |
64c4757e | 199 | |
dab6685f | 200 | if (verbose>0) |
82b27616 | 201 | fprintf(stderr, Name ": looking for devices for %s\n", |
8a46fe84 | 202 | mddev ? mddev : "further assembly"); |
82b27616 | 203 | |
811e6cbe NB |
204 | /* first walk the list of devices to find a consistent set |
205 | * that match the criterea, if that is possible. | |
206 | * We flag the one we like with 'used'. | |
207 | */ | |
208 | for (tmpdev = devlist; | |
209 | tmpdev; | |
210 | tmpdev = tmpdev->next) { | |
211 | char *devname = tmpdev->devname; | |
64c4757e NB |
212 | int dfd; |
213 | struct stat stb; | |
3da92f27 | 214 | struct supertype *tst = dup_super(st); |
52826846 | 215 | |
da6b5ca9 NB |
216 | if (tmpdev->used > 1) continue; |
217 | ||
52826846 | 218 | if (ident->devices && |
56eedc1a | 219 | !match_oneof(ident->devices, devname)) { |
6a41304b | 220 | if ((inargv && verbose>=0) || verbose > 0) |
56eedc1a | 221 | fprintf(stderr, Name ": %s is not one of %s\n", devname, ident->devices); |
52826846 | 222 | continue; |
56eedc1a | 223 | } |
4b1ac34b | 224 | |
8b0dabea | 225 | dfd = dev_open(devname, O_RDONLY|O_EXCL); |
64c4757e | 226 | if (dfd < 0) { |
6a41304b | 227 | if ((inargv && verbose >= 0) || verbose > 0) |
682c7051 | 228 | fprintf(stderr, Name ": cannot open device %s: %s\n", |
64c4757e | 229 | devname, strerror(errno)); |
da6b5ca9 | 230 | tmpdev->used = 2; |
52826846 NB |
231 | } else if (fstat(dfd, &stb)< 0) { |
232 | /* Impossible! */ | |
233 | fprintf(stderr, Name ": fstat failed for %s: %s\n", | |
234 | devname, strerror(errno)); | |
da6b5ca9 | 235 | tmpdev->used = 2; |
cd29a5c8 NB |
236 | } else if ((stb.st_mode & S_IFMT) != S_IFBLK) { |
237 | fprintf(stderr, Name ": %s is not a block device.\n", | |
52826846 | 238 | devname); |
da6b5ca9 | 239 | tmpdev->used = 2; |
82d9eba6 | 240 | } else if (!tst && (tst = guess_super(dfd)) == NULL) { |
6a41304b | 241 | if ((inargv && verbose >= 0) || verbose > 0) |
da6b5ca9 NB |
242 | fprintf(stderr, Name ": no recogniseable superblock on %s\n", |
243 | devname); | |
244 | tmpdev->used = 2; | |
3da92f27 | 245 | } else if (tst->ss->load_super(tst,dfd, NULL)) { |
6a41304b | 246 | if ((inargv && verbose >= 0) || verbose > 0) |
682c7051 | 247 | fprintf( stderr, Name ": no RAID superblock on %s\n", |
64c4757e | 248 | devname); |
52826846 | 249 | } else { |
3da92f27 | 250 | tst->ss->getinfo_super(tst, &info); |
64c4757e | 251 | } |
c06487ce | 252 | if (dfd >= 0) close(dfd); |
52826846 | 253 | |
838acbc2 | 254 | if (ident->uuid_set && (!update || strcmp(update, "uuid")!= 0) && |
3da92f27 NB |
255 | (!tst || !tst->sb || |
256 | same_uuid(info.uuid, ident->uuid, tst->ss->swapuuid)==0)) { | |
6a41304b | 257 | if ((inargv && verbose >= 0) || verbose > 0) |
52826846 NB |
258 | fprintf(stderr, Name ": %s has wrong uuid.\n", |
259 | devname); | |
df37ffc0 | 260 | goto loop; |
82b27616 | 261 | } |
c4f12c13 | 262 | if (ident->name[0] && (!update || strcmp(update, "name")!= 0) && |
3da92f27 NB |
263 | (!tst || !tst->sb || |
264 | name_matches(info.name, ident->name, homehost)==0)) { | |
6a41304b | 265 | if ((inargv && verbose >= 0) || verbose > 0) |
947fd4dd NB |
266 | fprintf(stderr, Name ": %s has wrong name.\n", |
267 | devname); | |
df37ffc0 | 268 | goto loop; |
947fd4dd | 269 | } |
98c6faba | 270 | if (ident->super_minor != UnSet && |
3da92f27 NB |
271 | (!tst || !tst->sb || |
272 | ident->super_minor != info.array.md_minor)) { | |
6a41304b | 273 | if ((inargv && verbose >= 0) || verbose > 0) |
52826846 | 274 | fprintf(stderr, Name ": %s has wrong super-minor.\n", |
64c4757e | 275 | devname); |
df37ffc0 | 276 | goto loop; |
64c4757e | 277 | } |
98c6faba | 278 | if (ident->level != UnSet && |
3da92f27 NB |
279 | (!tst || !tst->sb || |
280 | ident->level != info.array.level)) { | |
6a41304b | 281 | if ((inargv && verbose >= 0) || verbose > 0) |
cd29a5c8 NB |
282 | fprintf(stderr, Name ": %s has wrong raid level.\n", |
283 | devname); | |
df37ffc0 | 284 | goto loop; |
cd29a5c8 | 285 | } |
98c6faba | 286 | if (ident->raid_disks != UnSet && |
3da92f27 NB |
287 | (!tst || !tst->sb || |
288 | ident->raid_disks!= info.array.raid_disks)) { | |
6a41304b | 289 | if ((inargv && verbose >= 0) || verbose > 0) |
cd29a5c8 NB |
290 | fprintf(stderr, Name ": %s requires wrong number of drives.\n", |
291 | devname); | |
df37ffc0 | 292 | goto loop; |
cd29a5c8 | 293 | } |
da6b5ca9 | 294 | if (mdfd < 0) { |
3da92f27 | 295 | if (tst == NULL || tst->sb == NULL) |
da6b5ca9 | 296 | continue; |
589395d6 | 297 | if (update == NULL && |
3da92f27 | 298 | tst->ss->match_home(tst, homehost)==0) { |
da6b5ca9 NB |
299 | if ((inargv && verbose >= 0) || verbose > 0) |
300 | fprintf(stderr, Name ": %s is not built for host %s.\n", | |
301 | devname, homehost); | |
302 | /* Auto-assemble, and this is not a usable host */ | |
589395d6 NB |
303 | /* if update != NULL, we are updating the host |
304 | * name... */ | |
df37ffc0 | 305 | goto loop; |
da6b5ca9 NB |
306 | } |
307 | } | |
83b6208e | 308 | /* If we are this far, then we are nearly commited to this device. |
52826846 | 309 | * If the super_block doesn't exist, or doesn't match others, |
83b6208e NB |
310 | * then we probably cannot continue |
311 | * However if one of the arrays is for the homehost, and | |
312 | * the other isn't that can disambiguate. | |
52826846 | 313 | */ |
52826846 | 314 | |
3da92f27 | 315 | if (!tst || !tst->sb) { |
52826846 NB |
316 | fprintf(stderr, Name ": %s has no superblock - assembly aborted\n", |
317 | devname); | |
ddd1a492 NB |
318 | if (st) |
319 | st->ss->free_super(st); | |
52826846 NB |
320 | return 1; |
321 | } | |
838acbc2 | 322 | |
83b6208e | 323 | if (st == NULL) |
3da92f27 NB |
324 | st = dup_super(tst); |
325 | if (st->minor_version == -1) | |
326 | st->minor_version = tst->minor_version; | |
83b6208e NB |
327 | if (st->ss != tst->ss || |
328 | st->minor_version != tst->minor_version || | |
64557c33 | 329 | st->ss->compare_super(st, tst) != 0) { |
83b6208e | 330 | /* Some mismatch. If exactly one array matches this host, |
da6b5ca9 NB |
331 | * we can resolve on that one. |
332 | * Or, if we are auto assembling, we just ignore the second | |
333 | * for now. | |
83b6208e | 334 | */ |
da6b5ca9 | 335 | if (mdfd < 0) |
df37ffc0 | 336 | goto loop; |
83b6208e | 337 | if (homehost) { |
3da92f27 NB |
338 | int first = st->ss->match_home(st, homehost); |
339 | int last = tst->ss->match_home(tst, homehost); | |
83b6208e NB |
340 | if (first+last == 1) { |
341 | /* We can do something */ | |
342 | if (first) {/* just ignore this one */ | |
343 | if ((inargv && verbose >= 0) || verbose > 0) | |
344 | fprintf(stderr, Name ": %s misses out due to wrong homehost\n", | |
345 | devname); | |
df37ffc0 | 346 | goto loop; |
83b6208e NB |
347 | } else { /* reject all those sofar */ |
348 | mddev_dev_t td; | |
349 | if ((inargv && verbose >= 0) || verbose > 0) | |
350 | fprintf(stderr, Name ": %s overrides previous devices due to good homehost\n", | |
351 | devname); | |
352 | for (td=devlist; td != tmpdev; td=td->next) | |
353 | if (td->used == 1) | |
354 | td->used = 0; | |
355 | tmpdev->used = 1; | |
df37ffc0 | 356 | goto loop; |
83b6208e NB |
357 | } |
358 | } | |
359 | } | |
52826846 NB |
360 | fprintf(stderr, Name ": superblock on %s doesn't match others - assembly aborted\n", |
361 | devname); | |
3da92f27 NB |
362 | tst->ss->free_super(tst); |
363 | st->ss->free_super(st); | |
52826846 | 364 | return 1; |
64c4757e NB |
365 | } |
366 | ||
811e6cbe | 367 | tmpdev->used = 1; |
df37ffc0 NB |
368 | |
369 | loop: | |
3da92f27 | 370 | tst->ss->free_super(tst); |
811e6cbe NB |
371 | } |
372 | ||
8a46fe84 NB |
373 | if (mdfd < 0) { |
374 | /* So... it is up to me to open the device. | |
375 | * We create a name '/dev/md/XXX' based on the info in the | |
376 | * superblock, and call open_mddev on that | |
377 | */ | |
da6b5ca9 NB |
378 | mdu_array_info_t inf; |
379 | char *c; | |
3da92f27 | 380 | if (!st->sb) { |
d55e3aef | 381 | return 2; |
da6b5ca9 | 382 | } |
3da92f27 | 383 | st->ss->getinfo_super(st, &info); |
da6b5ca9 NB |
384 | c = strchr(info.name, ':'); |
385 | if (c) c++; else c= info.name; | |
41a3b72a NB |
386 | if (isdigit(*c) && ((ident->autof & 7)==4 || (ident->autof&7)==6)) |
387 | /* /dev/md/d0 style for partitionable */ | |
388 | asprintf(&mddev, "/dev/md/d%s", c); | |
389 | else | |
390 | asprintf(&mddev, "/dev/md/%s", c); | |
da6b5ca9 | 391 | mdfd = open_mddev(mddev, ident->autof); |
60e1bc1a | 392 | if (mdfd < 0) { |
3da92f27 | 393 | st->ss->free_super(st); |
60e1bc1a | 394 | free(devices); |
60e1bc1a NB |
395 | goto try_again; |
396 | } | |
da6b5ca9 NB |
397 | vers = md_get_version(mdfd); |
398 | if (ioctl(mdfd, GET_ARRAY_INFO, &inf)==0) { | |
60e1bc1a NB |
399 | for (tmpdev = devlist ; |
400 | tmpdev && tmpdev->used != 1; | |
401 | tmpdev = tmpdev->next) | |
402 | ; | |
da6b5ca9 | 403 | fprintf(stderr, Name ": %s already active, cannot restart it!\n", mddev); |
60e1bc1a NB |
404 | if (tmpdev) |
405 | fprintf(stderr, Name ": %s needed for %s...\n", | |
406 | mddev, tmpdev->devname); | |
da6b5ca9 | 407 | close(mdfd); |
60e1bc1a | 408 | mdfd = -1; |
3da92f27 | 409 | st->ss->free_super(st); |
60e1bc1a | 410 | free(devices); |
60e1bc1a | 411 | goto try_again; |
da6b5ca9 | 412 | } |
d55e3aef | 413 | must_close = 1; |
8a46fe84 NB |
414 | } |
415 | ||
811e6cbe | 416 | /* Ok, no bad inconsistancy, we can try updating etc */ |
bf4fb153 | 417 | bitmap_done = 0; |
da6b5ca9 | 418 | for (tmpdev = devlist; tmpdev; tmpdev=tmpdev->next) if (tmpdev->used == 1) { |
811e6cbe NB |
419 | char *devname = tmpdev->devname; |
420 | struct stat stb; | |
5787fa49 | 421 | /* looks like a good enough match to update the super block if needed */ |
d1f1011b | 422 | #ifndef MDASSEMBLE |
5787fa49 | 423 | if (update) { |
811e6cbe | 424 | int dfd; |
4b1ac34b NB |
425 | /* prepare useful information in info structures */ |
426 | struct stat stb2; | |
3da92f27 | 427 | struct supertype *tst; |
4b1ac34b | 428 | fstat(mdfd, &stb2); |
7d99579f NB |
429 | |
430 | if (strcmp(update, "uuid")==0 && | |
431 | !ident->uuid_set) { | |
432 | int rfd; | |
433 | if ((rfd = open("/dev/urandom", O_RDONLY)) < 0 || | |
434 | read(rfd, ident->uuid, 16) != 16) { | |
435 | *(__u32*)(ident->uuid) = random(); | |
436 | *(__u32*)(ident->uuid+1) = random(); | |
437 | *(__u32*)(ident->uuid+2) = random(); | |
438 | *(__u32*)(ident->uuid+3) = random(); | |
439 | } | |
440 | if (rfd >= 0) close(rfd); | |
7d99579f | 441 | } |
811e6cbe NB |
442 | dfd = dev_open(devname, O_RDWR|O_EXCL); |
443 | ||
0430ed48 NB |
444 | remove_partitions(dfd); |
445 | ||
3da92f27 NB |
446 | tst = dup_super(st); |
447 | tst->ss->load_super(tst, dfd, NULL); | |
448 | tst->ss->getinfo_super(tst, &info); | |
811e6cbe | 449 | |
7d99579f | 450 | memcpy(info.uuid, ident->uuid, 16); |
e5eac01f | 451 | strcpy(info.name, ident->name); |
811e6cbe NB |
452 | info.array.md_minor = minor(stb2.st_rdev); |
453 | ||
3da92f27 NB |
454 | tst->ss->update_super(tst, &info, update, |
455 | devname, verbose, | |
456 | ident->uuid_set, homehost); | |
e5eac01f NB |
457 | if (strcmp(update, "uuid")==0 && |
458 | !ident->uuid_set) { | |
459 | ident->uuid_set = 1; | |
460 | memcpy(ident->uuid, info.uuid, 16); | |
461 | } | |
b8a8ccf9 | 462 | if (dfd < 0) |
5787fa49 NB |
463 | fprintf(stderr, Name ": Cannot open %s for superblock update\n", |
464 | devname); | |
3da92f27 | 465 | else if (tst->ss->store_super(tst, dfd)) |
5787fa49 NB |
466 | fprintf(stderr, Name ": Could not re-write superblock on %s.\n", |
467 | devname); | |
468 | if (dfd >= 0) | |
469 | close(dfd); | |
8131b493 NB |
470 | |
471 | if (strcmp(update, "uuid")==0 && | |
bf4fb153 | 472 | ident->bitmap_fd >= 0 && !bitmap_done) { |
3da92f27 NB |
473 | if (bitmap_update_uuid(ident->bitmap_fd, |
474 | info.uuid, | |
475 | tst->ss->swapuuid) != 0) | |
bf4fb153 NB |
476 | fprintf(stderr, Name ": Could not update uuid on external bitmap.\n"); |
477 | else | |
478 | bitmap_done = 1; | |
479 | } | |
3da92f27 | 480 | tst->ss->free_super(tst); |
d1f1011b NB |
481 | } else |
482 | #endif | |
483 | { | |
3da92f27 | 484 | struct supertype *tst = dup_super(st);; |
da6b5ca9 NB |
485 | int dfd; |
486 | dfd = dev_open(devname, O_RDWR|O_EXCL); | |
487 | ||
0430ed48 NB |
488 | remove_partitions(dfd); |
489 | ||
3da92f27 NB |
490 | tst->ss->load_super(tst, dfd, NULL); |
491 | tst->ss->getinfo_super(tst, &info); | |
492 | tst->ss->free_super(tst); | |
da6b5ca9 | 493 | close(dfd); |
5787fa49 NB |
494 | } |
495 | ||
811e6cbe NB |
496 | stat(devname, &stb); |
497 | ||
dab6685f | 498 | if (verbose > 0) |
cd29a5c8 | 499 | fprintf(stderr, Name ": %s is identified as a member of %s, slot %d.\n", |
4b1ac34b | 500 | devname, mddev, info.disk.raid_disk); |
64c4757e | 501 | devices[devcnt].devname = devname; |
64c4757e | 502 | devices[devcnt].uptodate = 0; |
213ee40b NB |
503 | devices[devcnt].i = info; |
504 | devices[devcnt].i.disk.major = major(stb.st_rdev); | |
505 | devices[devcnt].i.disk.minor = minor(stb.st_rdev); | |
64c4757e | 506 | if (most_recent < devcnt) { |
213ee40b NB |
507 | if (devices[devcnt].i.events |
508 | > devices[most_recent].i.events) | |
64c4757e NB |
509 | most_recent = devcnt; |
510 | } | |
b8a8ccf9 | 511 | if (info.array.level == -4) |
5787fa49 NB |
512 | /* with multipath, the raid_disk from the superblock is meaningless */ |
513 | i = devcnt; | |
514 | else | |
213ee40b | 515 | i = devices[devcnt].i.disk.raid_disk; |
308e1801 NB |
516 | if (i+1 == 0) { |
517 | if (nextspare < info.array.raid_disks) | |
518 | nextspare = info.array.raid_disks; | |
519 | i = nextspare++; | |
08110d41 NB |
520 | } else { |
521 | if (i >= info.array.raid_disks && | |
522 | i >= nextspare) | |
523 | nextspare = i+1; | |
308e1801 | 524 | } |
98c6faba | 525 | if (i < 10000) { |
56eedc1a | 526 | if (i >= bestcnt) { |
98c6faba | 527 | unsigned int newbestcnt = i+10; |
56eedc1a | 528 | int *newbest = malloc(sizeof(int)*newbestcnt); |
98c6faba | 529 | unsigned int c; |
56eedc1a NB |
530 | for (c=0; c < newbestcnt; c++) |
531 | if (c < bestcnt) | |
532 | newbest[c] = best[c]; | |
533 | else | |
534 | newbest[c] = -1; | |
535 | if (best)free(best); | |
536 | best = newbest; | |
537 | bestcnt = newbestcnt; | |
538 | } | |
6a255b69 | 539 | if (best[i] >=0 && |
213ee40b NB |
540 | devices[best[i]].i.events |
541 | == devices[devcnt].i.events | |
542 | && (devices[best[i]].i.disk.minor | |
543 | != devices[devcnt].i.disk.minor) | |
544 | && st->ss->major == 0 | |
545 | && info.array.level != -4) { | |
6a255b69 NB |
546 | /* two different devices with identical superblock. |
547 | * Could be a mis-detection caused by overlapping | |
548 | * partitions. fail-safe. | |
549 | */ | |
550 | fprintf(stderr, Name ": WARNING %s and %s appear" | |
551 | " to have very similar superblocks.\n" | |
552 | " If they are really different, " | |
553 | "please --zero the superblock on one\n" | |
d2df86e0 NB |
554 | " If they are the same or overlap," |
555 | " please remove one from %s.\n", | |
556 | devices[best[i]].devname, devname, | |
557 | inargv ? "the list" : | |
558 | "the\n DEVICE list in mdadm.conf" | |
559 | ); | |
6a255b69 NB |
560 | if (must_close) close(mdfd); |
561 | return 1; | |
562 | } | |
52826846 | 563 | if (best[i] == -1 |
213ee40b NB |
564 | || (devices[best[i]].i.events |
565 | < devices[devcnt].i.events)) | |
52826846 | 566 | best[i] = devcnt; |
56eedc1a | 567 | } |
64c4757e | 568 | devcnt++; |
df37ffc0 | 569 | } |
4b1ac34b | 570 | |
586ed405 NB |
571 | if (update && strcmp(update, "byteorder")==0) |
572 | st->minor_version = 90; | |
573 | ||
64c4757e | 574 | if (devcnt == 0) { |
682c7051 | 575 | fprintf(stderr, Name ": no devices found for %s\n", |
64c4757e | 576 | mddev); |
3da92f27 | 577 | st->ss->free_super(st); |
d55e3aef | 578 | if (must_close) close(mdfd); |
64c4757e NB |
579 | return 1; |
580 | } | |
4b1ac34b | 581 | |
3da92f27 | 582 | st->ss->getinfo_super(st, &info); |
583315d9 | 583 | clean = info.array.state & 1; |
4b1ac34b | 584 | |
64c4757e NB |
585 | /* now we have some devices that might be suitable. |
586 | * I wonder how many | |
587 | */ | |
265e0f17 NB |
588 | avail = malloc(info.array.raid_disks); |
589 | memset(avail, 0, info.array.raid_disks); | |
64c4757e | 590 | okcnt = 0; |
52826846 | 591 | sparecnt=0; |
56eedc1a | 592 | for (i=0; i< bestcnt ;i++) { |
64c4757e | 593 | int j = best[i]; |
ee04451c NB |
594 | int event_margin = 1; /* always allow a difference of '1' |
595 | * like the kernel does | |
596 | */ | |
64c4757e | 597 | if (j < 0) continue; |
d013a55e NB |
598 | /* note: we ignore error flags in multipath arrays |
599 | * as they don't make sense | |
600 | */ | |
4b1ac34b | 601 | if (info.array.level != -4) |
213ee40b NB |
602 | if (!(devices[j].i.disk.state & (1<<MD_DISK_SYNC))) { |
603 | if (!(devices[j].i.disk.state | |
604 | & (1<<MD_DISK_FAULTY))) | |
aa88f531 | 605 | sparecnt++; |
d013a55e | 606 | continue; |
aa88f531 | 607 | } |
213ee40b NB |
608 | if (devices[j].i.events+event_margin >= |
609 | devices[most_recent].i.events) { | |
64c4757e | 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 && | |
213ee40b | 633 | devices[j].i.events > 0 && |
52826846 | 634 | (chosen_drive < 0 || |
213ee40b NB |
635 | devices[j].i.events |
636 | > devices[chosen_drive].i.events)) | |
52826846 NB |
637 | chosen_drive = j; |
638 | } | |
639 | if (chosen_drive < 0) | |
640 | break; | |
213ee40b | 641 | current_events = devices[chosen_drive].i.events; |
c5a6f9a6 | 642 | add_another: |
dab6685f NB |
643 | if (verbose >= 0) |
644 | fprintf(stderr, Name ": forcing event count in %s(%d) from %d upto %d\n", | |
213ee40b NB |
645 | devices[chosen_drive].devname, |
646 | devices[chosen_drive].i.disk.raid_disk, | |
647 | (int)(devices[chosen_drive].i.events), | |
648 | (int)(devices[most_recent].i.events)); | |
8b0dabea | 649 | fd = dev_open(devices[chosen_drive].devname, O_RDWR|O_EXCL); |
52826846 NB |
650 | if (fd < 0) { |
651 | fprintf(stderr, Name ": Couldn't open %s for write - not updating\n", | |
652 | devices[chosen_drive].devname); | |
213ee40b | 653 | devices[chosen_drive].i.events = 0; |
52826846 NB |
654 | continue; |
655 | } | |
3da92f27 NB |
656 | tst = dup_super(st); |
657 | if (tst->ss->load_super(st,fd, NULL)) { | |
52826846 NB |
658 | close(fd); |
659 | fprintf(stderr, Name ": RAID superblock disappeared from %s - not updating.\n", | |
660 | devices[chosen_drive].devname); | |
213ee40b | 661 | devices[chosen_drive].i.events = 0; |
52826846 NB |
662 | continue; |
663 | } | |
213ee40b | 664 | info.events = devices[most_recent].i.events; |
3da92f27 | 665 | tst->ss->update_super(tst, &info, "force-one", |
67a8c82d NB |
666 | devices[chosen_drive].devname, verbose, |
667 | 0, NULL); | |
4b1ac34b | 668 | |
3da92f27 | 669 | if (tst->ss->store_super(tst, fd)) { |
52826846 NB |
670 | close(fd); |
671 | fprintf(stderr, Name ": Could not re-write superblock on %s\n", | |
672 | devices[chosen_drive].devname); | |
213ee40b | 673 | devices[chosen_drive].i.events = 0; |
3da92f27 | 674 | tst->ss->free_super(tst); |
52826846 NB |
675 | continue; |
676 | } | |
677 | close(fd); | |
213ee40b | 678 | devices[chosen_drive].i.events = devices[most_recent].i.events; |
52826846 | 679 | devices[chosen_drive].uptodate = 1; |
265e0f17 | 680 | avail[chosen_drive] = 1; |
52826846 | 681 | okcnt++; |
3da92f27 | 682 | tst->ss->free_super(tst); |
c5a6f9a6 NB |
683 | |
684 | /* If there are any other drives of the same vintage, | |
685 | * add them in as well. We can't lose and we might gain | |
686 | */ | |
687 | for (i=0; i<info.array.raid_disks && i < bestcnt ; i++) { | |
688 | int j = best[i]; | |
689 | if (j >= 0 && | |
690 | !devices[j].uptodate && | |
213ee40b NB |
691 | devices[j].i.events > 0 && |
692 | devices[j].i.events == current_events) { | |
c5a6f9a6 NB |
693 | chosen_drive = j; |
694 | goto add_another; | |
695 | } | |
696 | } | |
64c4757e | 697 | } |
52826846 NB |
698 | |
699 | /* Now we want to look at the superblock which the kernel will base things on | |
700 | * and compare the devices that we think are working with the devices that the | |
701 | * superblock thinks are working. | |
702 | * If there are differences and --force is given, then update this chosen | |
703 | * superblock. | |
704 | */ | |
cd29a5c8 | 705 | chosen_drive = -1; |
3da92f27 | 706 | st->ss->free_super(st); |
56eedc1a | 707 | for (i=0; chosen_drive < 0 && i<bestcnt; i++) { |
52826846 NB |
708 | int j = best[i]; |
709 | int fd; | |
4b1ac34b | 710 | |
52826846 NB |
711 | if (j<0) |
712 | continue; | |
713 | if (!devices[j].uptodate) | |
714 | continue; | |
715 | chosen_drive = j; | |
8b0dabea | 716 | if ((fd=dev_open(devices[j].devname, O_RDONLY|O_EXCL))< 0) { |
52826846 NB |
717 | fprintf(stderr, Name ": Cannot open %s: %s\n", |
718 | devices[j].devname, strerror(errno)); | |
d55e3aef | 719 | if (must_close) close(mdfd); |
52826846 NB |
720 | return 1; |
721 | } | |
3da92f27 | 722 | if (st->ss->load_super(st,fd, NULL)) { |
52826846 NB |
723 | close(fd); |
724 | fprintf(stderr, Name ": RAID superblock has disappeared from %s\n", | |
725 | devices[j].devname); | |
d55e3aef | 726 | if (must_close) close(mdfd); |
52826846 NB |
727 | return 1; |
728 | } | |
729 | close(fd); | |
730 | } | |
3da92f27 | 731 | if (st->sb == NULL) { |
4b1ac34b | 732 | fprintf(stderr, Name ": No suitable drives found for %s\n", mddev); |
d55e3aef | 733 | if (must_close) close(mdfd); |
4b1ac34b NB |
734 | return 1; |
735 | } | |
3da92f27 | 736 | st->ss->getinfo_super(st, &info); |
56eedc1a | 737 | for (i=0; i<bestcnt; i++) { |
52826846 | 738 | int j = best[i]; |
98c6faba | 739 | unsigned int desired_state; |
11a3e71d | 740 | |
4b1ac34b | 741 | if (i < info.array.raid_disks) |
11a3e71d NB |
742 | desired_state = (1<<MD_DISK_ACTIVE) | (1<<MD_DISK_SYNC); |
743 | else | |
744 | desired_state = 0; | |
745 | ||
52826846 NB |
746 | if (j<0) |
747 | continue; | |
748 | if (!devices[j].uptodate) | |
749 | continue; | |
4b1ac34b | 750 | |
213ee40b NB |
751 | devices[j].i.disk.state = desired_state; |
752 | ||
753 | if (st->ss->update_super(st, &devices[j].i, "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 |
213ee40b | 769 | if (!(super.disks[i].i.disk.state & (1 << MD_DISK_FAULTY))) { |
52826846 NB |
770 | fprintf(stderr, Name ": devices %d of %s is not marked FAULTY in superblock, but cannot be found\n", |
771 | i, mddev); | |
772 | } | |
4b1ac34b | 773 | #endif |
52826846 | 774 | } |
c5a6f9a6 NB |
775 | if (force && !clean && |
776 | !enough(info.array.level, info.array.raid_disks, | |
777 | info.array.layout, clean, | |
778 | avail, okcnt)) { | |
3da92f27 | 779 | change += st->ss->update_super(st, &info, "force-array", |
67a8c82d NB |
780 | devices[chosen_drive].devname, verbose, |
781 | 0, NULL); | |
583315d9 | 782 | clean = 1; |
d013a55e | 783 | } |
52826846 | 784 | |
4b1ac34b | 785 | if (change) { |
52826846 | 786 | int fd; |
8b0dabea | 787 | fd = dev_open(devices[chosen_drive].devname, O_RDWR|O_EXCL); |
52826846 | 788 | if (fd < 0) { |
353632d9 | 789 | fprintf(stderr, Name ": Could not open %s for write - cannot Assemble array.\n", |
52826846 | 790 | devices[chosen_drive].devname); |
d55e3aef | 791 | if (must_close) close(mdfd); |
52826846 NB |
792 | return 1; |
793 | } | |
3da92f27 | 794 | if (st->ss->store_super(st, fd)) { |
52826846 NB |
795 | close(fd); |
796 | fprintf(stderr, Name ": Could not re-write superblock on %s\n", | |
797 | devices[chosen_drive].devname); | |
d55e3aef | 798 | if (must_close) close(mdfd); |
52826846 NB |
799 | return 1; |
800 | } | |
801 | close(fd); | |
52826846 NB |
802 | } |
803 | ||
353632d9 NB |
804 | /* If we are in the middle of a reshape we may need to restore saved data |
805 | * that was moved aside due to the reshape overwriting live data | |
806 | * The code of doing this lives in Grow.c | |
807 | */ | |
39c5a909 | 808 | #ifndef MDASSEMBLE |
353632d9 NB |
809 | if (info.reshape_active) { |
810 | int err = 0; | |
811 | int *fdlist = malloc(sizeof(int)* bestcnt); | |
812 | for (i=0; i<bestcnt; i++) { | |
813 | int j = best[i]; | |
814 | if (j >= 0) { | |
815 | fdlist[i] = dev_open(devices[j].devname, O_RDWR|O_EXCL); | |
816 | if (fdlist[i] < 0) { | |
817 | fprintf(stderr, Name ": Could not open %s for write - cannot Assemble array.\n", | |
818 | devices[j].devname); | |
819 | err = 1; | |
820 | break; | |
821 | } | |
822 | } else | |
823 | fdlist[i] = -1; | |
824 | } | |
825 | if (!err) | |
06b0d786 | 826 | err = Grow_restart(st, &info, fdlist, bestcnt, backup_file); |
353632d9 NB |
827 | while (i>0) { |
828 | i--; | |
829 | if (fdlist[i]>=0) close(fdlist[i]); | |
830 | } | |
831 | if (err) { | |
832 | fprintf(stderr, Name ": Failed to restore critical section for reshape, sorry.\n"); | |
d55e3aef | 833 | if (must_close) close(mdfd); |
353632d9 NB |
834 | return err; |
835 | } | |
836 | } | |
39c5a909 | 837 | #endif |
aa88f531 NB |
838 | /* count number of in-sync devices according to the superblock. |
839 | * We must have this number to start the array without -s or -R | |
840 | */ | |
4b1ac34b | 841 | req_cnt = info.array.working_disks; |
aa88f531 | 842 | |
64c4757e NB |
843 | /* Almost ready to actually *do* something */ |
844 | if (!old_linux) { | |
fbf8a0b7 | 845 | int rv; |
a19c88b8 NB |
846 | |
847 | #ifndef MDASSEMBLE | |
848 | struct mdinfo *sra; | |
849 | if (st->ss->external) { | |
850 | char ver[100]; | |
851 | strcat(strcpy(ver, "external:"), st->ss->text_version); | |
852 | sra = sysfs_read(mdfd, 0, 0); | |
853 | if ((vers % 100) < 2 || | |
854 | sra == NULL || | |
855 | sysfs_set_str(sra, NULL, "metadata_version", | |
856 | ver) < 0) { | |
857 | fprintf(stderr, Name ": This kernel does not " | |
858 | "support external metadata.\n"); | |
859 | return 1; | |
860 | } | |
861 | rv = sysfs_set_array(sra, &info); | |
862 | } else | |
863 | #endif | |
fbf8a0b7 NB |
864 | if ((vers % 100) >= 1) { /* can use different versions */ |
865 | mdu_array_info_t inf; | |
866 | memset(&inf, 0, sizeof(inf)); | |
867 | inf.major_version = st->ss->major; | |
868 | inf.minor_version = st->minor_version; | |
869 | rv = ioctl(mdfd, SET_ARRAY_INFO, &inf); | |
b8a8ccf9 | 870 | } else |
fbf8a0b7 NB |
871 | rv = ioctl(mdfd, SET_ARRAY_INFO, NULL); |
872 | ||
873 | if (rv) { | |
682c7051 | 874 | fprintf(stderr, Name ": SET_ARRAY_INFO failed for %s: %s\n", |
64c4757e | 875 | mddev, strerror(errno)); |
d55e3aef | 876 | if (must_close) close(mdfd); |
64c4757e NB |
877 | return 1; |
878 | } | |
11484a63 | 879 | if (ident->bitmap_fd >= 0) { |
c82f047c NB |
880 | if (ioctl(mdfd, SET_BITMAP_FILE, ident->bitmap_fd) != 0) { |
881 | fprintf(stderr, Name ": SET_BITMAP_FILE failed.\n"); | |
d55e3aef | 882 | if (must_close) close(mdfd); |
c82f047c NB |
883 | return 1; |
884 | } | |
7ef02d01 NB |
885 | } else if (ident->bitmap_file) { |
886 | /* From config file */ | |
887 | int bmfd = open(ident->bitmap_file, O_RDWR); | |
888 | if (bmfd < 0) { | |
889 | fprintf(stderr, Name ": Could not open bitmap file %s\n", | |
890 | ident->bitmap_file); | |
d55e3aef | 891 | if (must_close) close(mdfd); |
7ef02d01 NB |
892 | return 1; |
893 | } | |
894 | if (ioctl(mdfd, SET_BITMAP_FILE, bmfd) != 0) { | |
895 | fprintf(stderr, Name ": Failed to set bitmapfile for %s\n", mddev); | |
896 | close(bmfd); | |
d55e3aef | 897 | if (must_close) close(mdfd); |
7ef02d01 NB |
898 | return 1; |
899 | } | |
900 | close(bmfd); | |
c82f047c | 901 | } |
7ef02d01 | 902 | |
52826846 | 903 | /* First, add the raid disks, but add the chosen one last */ |
56eedc1a | 904 | for (i=0; i<= bestcnt; i++) { |
52826846 | 905 | int j; |
56eedc1a | 906 | if (i < bestcnt) { |
52826846 NB |
907 | j = best[i]; |
908 | if (j == chosen_drive) | |
909 | continue; | |
910 | } else | |
911 | j = chosen_drive; | |
912 | ||
56eedc1a | 913 | if (j >= 0 /* && devices[j].uptodate */) { |
a19c88b8 NB |
914 | #ifndef MDASSEMBLE |
915 | if (st->ss->external) { | |
916 | int fd = dev_open(devices[j].devname, | |
917 | O_RDONLY); | |
918 | if (fd < 0) | |
919 | rv = 1; | |
920 | else { | |
598f0d58 NB |
921 | devices[j].i.disk.number = |
922 | devices[j].i.disk.raid_disk; | |
923 | st->ss->getinfo_super_n(st, | |
924 | &devices[j].i); | |
a19c88b8 NB |
925 | rv = sysfs_add_disk(sra, fd, |
926 | &devices[j].i); | |
927 | close(fd); | |
928 | } | |
929 | } else | |
930 | #endif | |
931 | rv = ioctl(mdfd, ADD_NEW_DISK, | |
932 | &devices[j].i.disk); | |
933 | if (rv) { | |
213ee40b NB |
934 | fprintf(stderr, Name ": failed to add " |
935 | "%s to %s: %s\n", | |
64c4757e NB |
936 | devices[j].devname, |
937 | mddev, | |
938 | strerror(errno)); | |
213ee40b NB |
939 | if (i < info.array.raid_disks |
940 | || i == bestcnt) | |
52826846 NB |
941 | okcnt--; |
942 | else | |
943 | sparecnt--; | |
dab6685f | 944 | } else if (verbose > 0) |
213ee40b NB |
945 | fprintf(stderr, Name ": added %s " |
946 | "to %s as %d\n", | |
947 | devices[j].devname, mddev, | |
948 | devices[j].i.disk.raid_disk); | |
dab6685f | 949 | } else if (verbose > 0 && i < info.array.raid_disks) |
213ee40b NB |
950 | fprintf(stderr, Name ": no uptodate device for " |
951 | "slot %d of %s\n", | |
64c4757e NB |
952 | i, mddev); |
953 | } | |
aba69144 | 954 | |
598f0d58 NB |
955 | if (info.array.level == LEVEL_CONTAINER) { |
956 | if (verbose >= 0) { | |
957 | fprintf(stderr, Name ": Container %s has been " | |
958 | "assembled with %d drive%s", | |
959 | mddev, okcnt, okcnt==1?"":"s"); | |
960 | if (okcnt < info.array.raid_disks) | |
961 | fprintf(stderr, " (out of %d)", | |
962 | info.array.raid_disks); | |
963 | fprintf(stderr, "\n"); | |
964 | } | |
965 | if (must_close) | |
966 | close(mdfd); | |
967 | return 0; | |
968 | } | |
969 | ||
64c4757e | 970 | if (runstop == 1 || |
b8a8ccf9 | 971 | (runstop <= 0 && |
583315d9 NB |
972 | ( enough(info.array.level, info.array.raid_disks, |
973 | info.array.layout, clean, avail, okcnt) && | |
aa88f531 NB |
974 | (okcnt >= req_cnt || start_partial_ok) |
975 | ))) { | |
82b27616 | 976 | if (ioctl(mdfd, RUN_ARRAY, NULL)==0) { |
dab6685f NB |
977 | if (verbose >= 0) { |
978 | fprintf(stderr, Name ": %s has been started with %d drive%s", | |
979 | mddev, okcnt, okcnt==1?"":"s"); | |
b8a8ccf9 | 980 | if (okcnt < info.array.raid_disks) |
dab6685f NB |
981 | fprintf(stderr, " (out of %d)", info.array.raid_disks); |
982 | if (sparecnt) | |
983 | fprintf(stderr, " and %d spare%s", sparecnt, sparecnt==1?"":"s"); | |
984 | fprintf(stderr, ".\n"); | |
985 | } | |
589395d6 NB |
986 | if (must_close) { |
987 | int usecs = 1; | |
988 | close(mdfd); | |
989 | /* There is a nasty race with 'mdadm --monitor'. | |
990 | * If it opens this device before we close it, | |
991 | * it gets an incomplete open on which IO | |
598f0d58 NB |
992 | * doesn't work and the capacity is |
993 | * wrong. | |
589395d6 NB |
994 | * If we reopen (to check for layered devices) |
995 | * before --monitor closes, we loose. | |
996 | * | |
997 | * So: wait upto 1 second for there to be | |
998 | * a non-zero capacity. | |
999 | */ | |
1000 | while (usecs < 1000) { | |
1001 | mdfd = open(mddev, O_RDONLY); | |
1002 | if (mdfd >= 0) { | |
beae1dfe NB |
1003 | unsigned long long size; |
1004 | if (get_dev_size(mdfd, NULL, &size) && | |
589395d6 NB |
1005 | size > 0) |
1006 | break; | |
1007 | close(mdfd); | |
1008 | } | |
1009 | usleep(usecs); | |
1010 | usecs <<= 1; | |
1011 | } | |
1012 | } | |
64c4757e | 1013 | return 0; |
82b27616 | 1014 | } |
682c7051 | 1015 | fprintf(stderr, Name ": failed to RUN_ARRAY %s: %s\n", |
64c4757e | 1016 | mddev, strerror(errno)); |
583315d9 NB |
1017 | |
1018 | if (!enough(info.array.level, info.array.raid_disks, | |
1019 | info.array.layout, 1, avail, okcnt)) | |
1020 | fprintf(stderr, Name ": Not enough devices to " | |
1021 | "start the array.\n"); | |
1022 | else if (!enough(info.array.level, | |
1023 | info.array.raid_disks, | |
1024 | info.array.layout, clean, | |
1025 | avail, okcnt)) | |
1026 | fprintf(stderr, Name ": Not enough devices to " | |
1027 | "start the array while not clean " | |
1028 | "- consider --force.\n"); | |
1029 | ||
d55e3aef | 1030 | if (must_close) close(mdfd); |
64c4757e NB |
1031 | return 1; |
1032 | } | |
82b27616 | 1033 | if (runstop == -1) { |
b8a8ccf9 | 1034 | fprintf(stderr, Name ": %s assembled from %d drive%s", |
52826846 | 1035 | mddev, okcnt, okcnt==1?"":"s"); |
b8a8ccf9 NB |
1036 | if (okcnt != info.array.raid_disks) |
1037 | fprintf(stderr, " (out of %d)", info.array.raid_disks); | |
1038 | fprintf(stderr, ", but not started.\n"); | |
d55e3aef | 1039 | if (must_close) close(mdfd); |
64c4757e | 1040 | return 0; |
82b27616 | 1041 | } |
4855f95c | 1042 | if (verbose >= -1) { |
dab6685f NB |
1043 | fprintf(stderr, Name ": %s assembled from %d drive%s", mddev, okcnt, okcnt==1?"":"s"); |
1044 | if (sparecnt) | |
1045 | fprintf(stderr, " and %d spare%s", sparecnt, sparecnt==1?"":"s"); | |
583315d9 NB |
1046 | if (!enough(info.array.level, info.array.raid_disks, |
1047 | info.array.layout, 1, avail, okcnt)) | |
dab6685f | 1048 | fprintf(stderr, " - not enough to start the array.\n"); |
583315d9 NB |
1049 | else if (!enough(info.array.level, |
1050 | info.array.raid_disks, | |
1051 | info.array.layout, clean, | |
1052 | avail, okcnt)) | |
1053 | fprintf(stderr, " - not enough to start the " | |
1054 | "array while not clean - consider " | |
1055 | "--force.\n"); | |
dab6685f NB |
1056 | else { |
1057 | if (req_cnt == info.array.raid_disks) | |
1058 | fprintf(stderr, " - need all %d to start it", req_cnt); | |
1059 | else | |
1060 | fprintf(stderr, " - need %d of %d to start", req_cnt, info.array.raid_disks); | |
1061 | fprintf(stderr, " (use --run to insist).\n"); | |
1062 | } | |
aa88f531 | 1063 | } |
d55e3aef | 1064 | if (must_close) close(mdfd); |
64c4757e | 1065 | return 1; |
82b27616 | 1066 | } else { |
52826846 NB |
1067 | /* The "chosen_drive" is a good choice, and if necessary, the superblock has |
1068 | * been updated to point to the current locations of devices. | |
1069 | * so we can just start the array | |
82b27616 | 1070 | */ |
cd29a5c8 | 1071 | unsigned long dev; |
213ee40b NB |
1072 | dev = makedev(devices[chosen_drive].i.disk.major, |
1073 | devices[chosen_drive].i.disk.minor); | |
82b27616 NB |
1074 | if (ioctl(mdfd, START_ARRAY, dev)) { |
1075 | fprintf(stderr, Name ": Cannot start array: %s\n", | |
1076 | strerror(errno)); | |
1077 | } | |
aba69144 | 1078 | |
64c4757e | 1079 | } |
d55e3aef | 1080 | if (must_close) close(mdfd); |
e0d19036 | 1081 | return 0; |
64c4757e | 1082 | } |