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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 */ |
4b1ac34b | 118 | void *first_super = NULL, *super = NULL; |
64c4757e NB |
119 | struct { |
120 | char *devname; | |
98c6faba NB |
121 | unsigned int major, minor; |
122 | unsigned int oldmajor, oldminor; | |
64c4757e | 123 | long long events; |
64c4757e | 124 | int uptodate; |
d013a55e | 125 | int state; |
52826846 | 126 | int raid_disk; |
6a41304b | 127 | int disk_nr; |
5787fa49 | 128 | } *devices; |
56eedc1a | 129 | int *best = NULL; /* indexed by raid_disk */ |
98c6faba NB |
130 | unsigned int bestcnt = 0; |
131 | int devcnt = 0; | |
132 | unsigned int okcnt, sparecnt; | |
133 | unsigned int req_cnt; | |
134 | unsigned int i; | |
64c4757e | 135 | int most_recent = 0; |
cd29a5c8 | 136 | int chosen_drive; |
52826846 | 137 | int change = 0; |
cd29a5c8 | 138 | int inargv = 0; |
589395d6 | 139 | int start_partial_ok = (runstop >= 0) && (force || devlist==NULL || mdfd < 0); |
98c6faba | 140 | unsigned int num_devs; |
5787fa49 | 141 | mddev_dev_t tmpdev; |
4b1ac34b | 142 | struct mdinfo info; |
265e0f17 | 143 | char *avail; |
308e1801 | 144 | int nextspare = 0; |
8a46fe84 | 145 | |
682c7051 | 146 | if (get_linux_version() < 2004000) |
64c4757e NB |
147 | old_linux = 1; |
148 | ||
8a46fe84 NB |
149 | if (mdfd >= 0) { |
150 | vers = md_get_version(mdfd); | |
151 | if (vers <= 0) { | |
152 | fprintf(stderr, Name ": %s appears not to be an md device.\n", mddev); | |
153 | return 1; | |
154 | } | |
155 | if (vers < 9000) { | |
156 | fprintf(stderr, Name ": Assemble requires driver version 0.90.0 or later.\n" | |
157 | " Upgrade your kernel or try --build\n"); | |
158 | return 1; | |
159 | } | |
64c4757e | 160 | |
8a46fe84 NB |
161 | if (ioctl(mdfd, GET_ARRAY_INFO, &info.array)>=0) { |
162 | fprintf(stderr, Name ": device %s already active - cannot assemble it\n", | |
163 | mddev); | |
164 | return 1; | |
165 | } | |
166 | ioctl(mdfd, STOP_ARRAY, NULL); /* just incase it was started but has no content */ | |
167 | } | |
64c4757e | 168 | /* |
52826846 NB |
169 | * If any subdevs are listed, then any that don't |
170 | * match ident are discarded. Remainder must all match and | |
171 | * become the array. | |
172 | * If no subdevs, then we scan all devices in the config file, but | |
173 | * there must be something in the identity | |
64c4757e | 174 | */ |
64c4757e | 175 | |
cd29a5c8 | 176 | if (!devlist && |
52826846 NB |
177 | ident->uuid_set == 0 && |
178 | ident->super_minor < 0 && | |
179 | ident->devices == NULL) { | |
180 | fprintf(stderr, Name ": No identity information available for %s - cannot assemble.\n", | |
8a46fe84 | 181 | mddev ? mddev : "further assembly"); |
52826846 | 182 | return 1; |
64c4757e | 183 | } |
cd29a5c8 | 184 | if (devlist == NULL) |
8aec876d | 185 | devlist = conf_get_devs(); |
da6b5ca9 NB |
186 | else if (mdfd >= 0) |
187 | inargv = 1; | |
64c4757e | 188 | |
60e1bc1a NB |
189 | try_again: |
190 | ||
5787fa49 NB |
191 | tmpdev = devlist; num_devs = 0; |
192 | while (tmpdev) { | |
da6b5ca9 NB |
193 | if (tmpdev->used) |
194 | tmpdev->used = 2; | |
195 | else | |
196 | num_devs++; | |
5787fa49 NB |
197 | tmpdev = tmpdev->next; |
198 | } | |
5787fa49 NB |
199 | devices = malloc(num_devs * sizeof(*devices)); |
200 | ||
82d9eba6 | 201 | if (!st && ident->st) st = ident->st; |
64c4757e | 202 | |
dab6685f | 203 | if (verbose>0) |
82b27616 | 204 | fprintf(stderr, Name ": looking for devices for %s\n", |
8a46fe84 | 205 | mddev ? mddev : "further assembly"); |
82b27616 | 206 | |
811e6cbe NB |
207 | /* first walk the list of devices to find a consistent set |
208 | * that match the criterea, if that is possible. | |
209 | * We flag the one we like with 'used'. | |
210 | */ | |
211 | for (tmpdev = devlist; | |
212 | tmpdev; | |
213 | tmpdev = tmpdev->next) { | |
214 | char *devname = tmpdev->devname; | |
64c4757e NB |
215 | int dfd; |
216 | struct stat stb; | |
82d9eba6 | 217 | struct supertype *tst = st; |
52826846 | 218 | |
da6b5ca9 NB |
219 | if (tmpdev->used > 1) continue; |
220 | ||
52826846 | 221 | if (ident->devices && |
56eedc1a | 222 | !match_oneof(ident->devices, devname)) { |
6a41304b | 223 | if ((inargv && verbose>=0) || verbose > 0) |
56eedc1a | 224 | fprintf(stderr, Name ": %s is not one of %s\n", devname, ident->devices); |
52826846 | 225 | continue; |
56eedc1a | 226 | } |
4b1ac34b NB |
227 | |
228 | if (super) { | |
229 | free(super); | |
230 | super = NULL; | |
231 | } | |
52826846 | 232 | |
8b0dabea | 233 | dfd = dev_open(devname, O_RDONLY|O_EXCL); |
64c4757e | 234 | if (dfd < 0) { |
6a41304b | 235 | if ((inargv && verbose >= 0) || verbose > 0) |
682c7051 | 236 | fprintf(stderr, Name ": cannot open device %s: %s\n", |
64c4757e | 237 | devname, strerror(errno)); |
da6b5ca9 | 238 | tmpdev->used = 2; |
52826846 NB |
239 | } else if (fstat(dfd, &stb)< 0) { |
240 | /* Impossible! */ | |
241 | fprintf(stderr, Name ": fstat failed for %s: %s\n", | |
242 | devname, strerror(errno)); | |
da6b5ca9 | 243 | tmpdev->used = 2; |
cd29a5c8 NB |
244 | } else if ((stb.st_mode & S_IFMT) != S_IFBLK) { |
245 | fprintf(stderr, Name ": %s is not a block device.\n", | |
52826846 | 246 | devname); |
da6b5ca9 | 247 | tmpdev->used = 2; |
82d9eba6 | 248 | } else if (!tst && (tst = guess_super(dfd)) == NULL) { |
6a41304b | 249 | if ((inargv && verbose >= 0) || verbose > 0) |
da6b5ca9 NB |
250 | fprintf(stderr, Name ": no recogniseable superblock on %s\n", |
251 | devname); | |
252 | tmpdev->used = 2; | |
82d9eba6 | 253 | } else if (tst->ss->load_super(tst,dfd, &super, NULL)) { |
6a41304b | 254 | if ((inargv && verbose >= 0) || verbose > 0) |
682c7051 | 255 | fprintf( stderr, Name ": no RAID superblock on %s\n", |
64c4757e | 256 | devname); |
52826846 | 257 | } else { |
31317663 | 258 | tst->ss->getinfo_super(&info, super); |
64c4757e | 259 | } |
c06487ce | 260 | if (dfd >= 0) close(dfd); |
52826846 | 261 | |
838acbc2 | 262 | if (ident->uuid_set && (!update || strcmp(update, "uuid")!= 0) && |
f277ce36 | 263 | (!super || same_uuid(info.uuid, ident->uuid, tst->ss->swapuuid)==0)) { |
6a41304b | 264 | if ((inargv && verbose >= 0) || verbose > 0) |
52826846 NB |
265 | fprintf(stderr, Name ": %s has wrong uuid.\n", |
266 | devname); | |
267 | continue; | |
82b27616 | 268 | } |
c4f12c13 | 269 | if (ident->name[0] && (!update || strcmp(update, "name")!= 0) && |
624920bb | 270 | (!super || name_matches(info.name, ident->name, homehost)==0)) { |
6a41304b | 271 | if ((inargv && verbose >= 0) || verbose > 0) |
947fd4dd NB |
272 | fprintf(stderr, Name ": %s has wrong name.\n", |
273 | devname); | |
274 | continue; | |
275 | } | |
98c6faba | 276 | if (ident->super_minor != UnSet && |
4b1ac34b | 277 | (!super || ident->super_minor != info.array.md_minor)) { |
6a41304b | 278 | if ((inargv && verbose >= 0) || verbose > 0) |
52826846 | 279 | fprintf(stderr, Name ": %s has wrong super-minor.\n", |
64c4757e NB |
280 | devname); |
281 | continue; | |
282 | } | |
98c6faba | 283 | if (ident->level != UnSet && |
4b1ac34b | 284 | (!super|| ident->level != info.array.level)) { |
6a41304b | 285 | if ((inargv && verbose >= 0) || verbose > 0) |
cd29a5c8 NB |
286 | fprintf(stderr, Name ": %s has wrong raid level.\n", |
287 | devname); | |
288 | continue; | |
289 | } | |
98c6faba | 290 | if (ident->raid_disks != UnSet && |
4b1ac34b | 291 | (!super || ident->raid_disks!= info.array.raid_disks)) { |
6a41304b | 292 | if ((inargv && verbose >= 0) || verbose > 0) |
cd29a5c8 NB |
293 | fprintf(stderr, Name ": %s requires wrong number of drives.\n", |
294 | devname); | |
295 | continue; | |
296 | } | |
da6b5ca9 NB |
297 | if (mdfd < 0) { |
298 | if (tst == NULL || super == NULL) | |
299 | continue; | |
589395d6 NB |
300 | if (update == NULL && |
301 | tst->ss->match_home(super, homehost)==0) { | |
da6b5ca9 NB |
302 | if ((inargv && verbose >= 0) || verbose > 0) |
303 | fprintf(stderr, Name ": %s is not built for host %s.\n", | |
304 | devname, homehost); | |
305 | /* Auto-assemble, and this is not a usable host */ | |
589395d6 NB |
306 | /* if update != NULL, we are updating the host |
307 | * name... */ | |
da6b5ca9 NB |
308 | continue; |
309 | } | |
310 | } | |
83b6208e | 311 | /* If we are this far, then we are nearly commited to this device. |
52826846 | 312 | * If the super_block doesn't exist, or doesn't match others, |
83b6208e NB |
313 | * then we probably cannot continue |
314 | * However if one of the arrays is for the homehost, and | |
315 | * the other isn't that can disambiguate. | |
52826846 | 316 | */ |
52826846 | 317 | |
4b1ac34b | 318 | if (!super) { |
52826846 NB |
319 | fprintf(stderr, Name ": %s has no superblock - assembly aborted\n", |
320 | devname); | |
4b1ac34b | 321 | free(first_super); |
52826846 NB |
322 | return 1; |
323 | } | |
838acbc2 | 324 | |
83b6208e NB |
325 | if (st == NULL) |
326 | st = tst; | |
327 | if (st->ss != tst->ss || | |
328 | st->minor_version != tst->minor_version || | |
329 | st->ss->compare_super(&first_super, super) != 0) { | |
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 NB |
335 | if (mdfd < 0) |
336 | continue; | |
83b6208e NB |
337 | if (homehost) { |
338 | int first = st->ss->match_home(first_super, homehost); | |
339 | int last = tst->ss->match_home(super, homehost); | |
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); | |
346 | continue; | |
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; | |
356 | continue; | |
357 | } | |
358 | } | |
359 | } | |
52826846 NB |
360 | fprintf(stderr, Name ": superblock on %s doesn't match others - assembly aborted\n", |
361 | devname); | |
4b1ac34b NB |
362 | free(super); |
363 | free(first_super); | |
52826846 | 364 | return 1; |
64c4757e NB |
365 | } |
366 | ||
811e6cbe NB |
367 | tmpdev->used = 1; |
368 | } | |
369 | ||
8a46fe84 NB |
370 | if (mdfd < 0) { |
371 | /* So... it is up to me to open the device. | |
372 | * We create a name '/dev/md/XXX' based on the info in the | |
373 | * superblock, and call open_mddev on that | |
374 | */ | |
da6b5ca9 NB |
375 | mdu_array_info_t inf; |
376 | char *c; | |
377 | if (!first_super) { | |
d55e3aef | 378 | return 2; |
da6b5ca9 NB |
379 | } |
380 | st->ss->getinfo_super(&info, first_super); | |
381 | c = strchr(info.name, ':'); | |
382 | if (c) c++; else c= info.name; | |
41a3b72a NB |
383 | if (isdigit(*c) && ((ident->autof & 7)==4 || (ident->autof&7)==6)) |
384 | /* /dev/md/d0 style for partitionable */ | |
385 | asprintf(&mddev, "/dev/md/d%s", c); | |
386 | else | |
387 | asprintf(&mddev, "/dev/md/%s", c); | |
da6b5ca9 | 388 | mdfd = open_mddev(mddev, ident->autof); |
60e1bc1a NB |
389 | if (mdfd < 0) { |
390 | free(first_super); | |
391 | free(devices); | |
392 | first_super = NULL; | |
393 | goto try_again; | |
394 | } | |
da6b5ca9 NB |
395 | vers = md_get_version(mdfd); |
396 | if (ioctl(mdfd, GET_ARRAY_INFO, &inf)==0) { | |
60e1bc1a NB |
397 | for (tmpdev = devlist ; |
398 | tmpdev && tmpdev->used != 1; | |
399 | tmpdev = tmpdev->next) | |
400 | ; | |
da6b5ca9 | 401 | fprintf(stderr, Name ": %s already active, cannot restart it!\n", mddev); |
60e1bc1a NB |
402 | if (tmpdev) |
403 | fprintf(stderr, Name ": %s needed for %s...\n", | |
404 | mddev, tmpdev->devname); | |
da6b5ca9 | 405 | close(mdfd); |
60e1bc1a | 406 | mdfd = -1; |
da6b5ca9 | 407 | free(first_super); |
60e1bc1a NB |
408 | free(devices); |
409 | first_super = NULL; | |
410 | goto try_again; | |
da6b5ca9 | 411 | } |
d55e3aef | 412 | must_close = 1; |
8a46fe84 NB |
413 | } |
414 | ||
811e6cbe | 415 | /* Ok, no bad inconsistancy, we can try updating etc */ |
da6b5ca9 | 416 | for (tmpdev = devlist; tmpdev; tmpdev=tmpdev->next) if (tmpdev->used == 1) { |
811e6cbe NB |
417 | char *devname = tmpdev->devname; |
418 | struct stat stb; | |
5787fa49 | 419 | /* looks like a good enough match to update the super block if needed */ |
d1f1011b | 420 | #ifndef MDASSEMBLE |
5787fa49 | 421 | if (update) { |
811e6cbe | 422 | int dfd; |
4b1ac34b NB |
423 | /* prepare useful information in info structures */ |
424 | struct stat stb2; | |
425 | fstat(mdfd, &stb2); | |
7d99579f NB |
426 | |
427 | if (strcmp(update, "uuid")==0 && | |
428 | !ident->uuid_set) { | |
429 | int rfd; | |
430 | if ((rfd = open("/dev/urandom", O_RDONLY)) < 0 || | |
431 | read(rfd, ident->uuid, 16) != 16) { | |
432 | *(__u32*)(ident->uuid) = random(); | |
433 | *(__u32*)(ident->uuid+1) = random(); | |
434 | *(__u32*)(ident->uuid+2) = random(); | |
435 | *(__u32*)(ident->uuid+3) = random(); | |
436 | } | |
437 | if (rfd >= 0) close(rfd); | |
7d99579f | 438 | } |
811e6cbe NB |
439 | dfd = dev_open(devname, O_RDWR|O_EXCL); |
440 | ||
0430ed48 NB |
441 | remove_partitions(dfd); |
442 | ||
811e6cbe NB |
443 | if (super) { |
444 | free(super); | |
445 | super = NULL; | |
446 | } | |
447 | ||
448 | st->ss->load_super(st, dfd, &super, NULL); | |
449 | st->ss->getinfo_super(&info, super); | |
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 | ||
e5eac01f NB |
455 | st->ss->update_super(&info, super, update, devname, verbose, |
456 | ident->uuid_set, homehost); | |
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); | |
96395475 | 465 | else if (st->ss->store_super(st, dfd, super)) |
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 && | |
472 | ident->bitmap_fd) | |
9fca7d62 NB |
473 | if (bitmap_update_uuid(ident->bitmap_fd, info.uuid) != 0) |
474 | fprintf(stderr, Name ": Could not update uuid on %s.\n", | |
475 | devname); | |
d1f1011b NB |
476 | } else |
477 | #endif | |
478 | { | |
da6b5ca9 NB |
479 | int dfd; |
480 | dfd = dev_open(devname, O_RDWR|O_EXCL); | |
481 | ||
0430ed48 NB |
482 | remove_partitions(dfd); |
483 | ||
da6b5ca9 NB |
484 | if (super) { |
485 | free(super); | |
486 | super = NULL; | |
487 | } | |
488 | ||
489 | st->ss->load_super(st, dfd, &super, NULL); | |
490 | st->ss->getinfo_super(&info, super); | |
491 | close(dfd); | |
5787fa49 NB |
492 | } |
493 | ||
811e6cbe NB |
494 | stat(devname, &stb); |
495 | ||
dab6685f | 496 | if (verbose > 0) |
cd29a5c8 | 497 | fprintf(stderr, Name ": %s is identified as a member of %s, slot %d.\n", |
4b1ac34b | 498 | devname, mddev, info.disk.raid_disk); |
64c4757e | 499 | devices[devcnt].devname = devname; |
0df46c2a NB |
500 | devices[devcnt].major = major(stb.st_rdev); |
501 | devices[devcnt].minor = minor(stb.st_rdev); | |
4b1ac34b NB |
502 | devices[devcnt].oldmajor = info.disk.major; |
503 | devices[devcnt].oldminor = info.disk.minor; | |
504 | devices[devcnt].events = info.events; | |
505 | devices[devcnt].raid_disk = info.disk.raid_disk; | |
6a41304b | 506 | devices[devcnt].disk_nr = info.disk.number; |
64c4757e | 507 | devices[devcnt].uptodate = 0; |
4b1ac34b | 508 | devices[devcnt].state = info.disk.state; |
64c4757e NB |
509 | if (most_recent < devcnt) { |
510 | if (devices[devcnt].events | |
511 | > devices[most_recent].events) | |
512 | most_recent = devcnt; | |
513 | } | |
b8a8ccf9 | 514 | if (info.array.level == -4) |
5787fa49 NB |
515 | /* with multipath, the raid_disk from the superblock is meaningless */ |
516 | i = devcnt; | |
517 | else | |
518 | i = devices[devcnt].raid_disk; | |
308e1801 NB |
519 | if (i+1 == 0) { |
520 | if (nextspare < info.array.raid_disks) | |
521 | nextspare = info.array.raid_disks; | |
522 | i = nextspare++; | |
08110d41 NB |
523 | } else { |
524 | if (i >= info.array.raid_disks && | |
525 | i >= nextspare) | |
526 | nextspare = i+1; | |
308e1801 | 527 | } |
98c6faba | 528 | if (i < 10000) { |
56eedc1a | 529 | if (i >= bestcnt) { |
98c6faba | 530 | unsigned int newbestcnt = i+10; |
56eedc1a | 531 | int *newbest = malloc(sizeof(int)*newbestcnt); |
98c6faba | 532 | unsigned int c; |
56eedc1a NB |
533 | for (c=0; c < newbestcnt; c++) |
534 | if (c < bestcnt) | |
535 | newbest[c] = best[c]; | |
536 | else | |
537 | newbest[c] = -1; | |
538 | if (best)free(best); | |
539 | best = newbest; | |
540 | bestcnt = newbestcnt; | |
541 | } | |
6a255b69 NB |
542 | if (best[i] >=0 && |
543 | devices[best[i]].events == devices[devcnt].events && | |
544 | devices[best[i]].minor != devices[devcnt].minor && | |
545 | st->ss->major == 0 && | |
546 | info.array.level != -4) { | |
547 | /* two different devices with identical superblock. | |
548 | * Could be a mis-detection caused by overlapping | |
549 | * partitions. fail-safe. | |
550 | */ | |
551 | fprintf(stderr, Name ": WARNING %s and %s appear" | |
552 | " to have very similar superblocks.\n" | |
553 | " If they are really different, " | |
554 | "please --zero the superblock on one\n" | |
d2df86e0 NB |
555 | " If they are the same or overlap," |
556 | " please remove one from %s.\n", | |
557 | devices[best[i]].devname, devname, | |
558 | inargv ? "the list" : | |
559 | "the\n DEVICE list in mdadm.conf" | |
560 | ); | |
6a255b69 NB |
561 | if (must_close) close(mdfd); |
562 | return 1; | |
563 | } | |
52826846 NB |
564 | if (best[i] == -1 |
565 | || devices[best[i]].events < devices[devcnt].events) | |
566 | best[i] = devcnt; | |
56eedc1a | 567 | } |
64c4757e NB |
568 | devcnt++; |
569 | } | |
570 | ||
4b1ac34b NB |
571 | if (super) |
572 | free(super); | |
573 | super = NULL; | |
574 | ||
586ed405 NB |
575 | if (update && strcmp(update, "byteorder")==0) |
576 | st->minor_version = 90; | |
577 | ||
64c4757e | 578 | if (devcnt == 0) { |
682c7051 | 579 | fprintf(stderr, Name ": no devices found for %s\n", |
64c4757e | 580 | mddev); |
4b1ac34b | 581 | free(first_super); |
d55e3aef | 582 | if (must_close) close(mdfd); |
64c4757e NB |
583 | return 1; |
584 | } | |
4b1ac34b | 585 | |
31317663 | 586 | st->ss->getinfo_super(&info, first_super); |
583315d9 | 587 | clean = info.array.state & 1; |
4b1ac34b | 588 | |
64c4757e NB |
589 | /* now we have some devices that might be suitable. |
590 | * I wonder how many | |
591 | */ | |
265e0f17 NB |
592 | avail = malloc(info.array.raid_disks); |
593 | memset(avail, 0, info.array.raid_disks); | |
64c4757e | 594 | okcnt = 0; |
52826846 | 595 | sparecnt=0; |
56eedc1a | 596 | for (i=0; i< bestcnt ;i++) { |
64c4757e | 597 | int j = best[i]; |
ee04451c NB |
598 | int event_margin = 1; /* always allow a difference of '1' |
599 | * like the kernel does | |
600 | */ | |
64c4757e | 601 | if (j < 0) continue; |
d013a55e NB |
602 | /* note: we ignore error flags in multipath arrays |
603 | * as they don't make sense | |
604 | */ | |
4b1ac34b | 605 | if (info.array.level != -4) |
aa88f531 NB |
606 | if (!(devices[j].state & (1<<MD_DISK_SYNC))) { |
607 | if (!(devices[j].state & (1<<MD_DISK_FAULTY))) | |
608 | sparecnt++; | |
d013a55e | 609 | continue; |
aa88f531 | 610 | } |
cd29a5c8 | 611 | if (devices[j].events+event_margin >= |
64c4757e NB |
612 | devices[most_recent].events) { |
613 | devices[j].uptodate = 1; | |
265e0f17 | 614 | if (i < info.array.raid_disks) { |
52826846 | 615 | okcnt++; |
265e0f17 NB |
616 | avail[i]=1; |
617 | } else | |
52826846 | 618 | sparecnt++; |
64c4757e NB |
619 | } |
620 | } | |
265e0f17 | 621 | while (force && !enough(info.array.level, info.array.raid_disks, |
583315d9 | 622 | info.array.layout, 1, |
265e0f17 | 623 | avail, okcnt)) { |
64c4757e NB |
624 | /* Choose the newest best drive which is |
625 | * not up-to-date, update the superblock | |
626 | * and add it. | |
627 | */ | |
52826846 | 628 | int fd; |
cd29a5c8 | 629 | chosen_drive = -1; |
4b1ac34b | 630 | for (i=0; i<info.array.raid_disks && i < bestcnt; i++) { |
52826846 NB |
631 | int j = best[i]; |
632 | if (j>=0 && | |
633 | !devices[j].uptodate && | |
634 | devices[j].events > 0 && | |
635 | (chosen_drive < 0 || | |
636 | devices[j].events > devices[chosen_drive].events)) | |
637 | chosen_drive = j; | |
638 | } | |
639 | if (chosen_drive < 0) | |
640 | break; | |
dab6685f NB |
641 | if (verbose >= 0) |
642 | fprintf(stderr, Name ": forcing event count in %s(%d) from %d upto %d\n", | |
643 | devices[chosen_drive].devname, devices[chosen_drive].raid_disk, | |
644 | (int)(devices[chosen_drive].events), | |
645 | (int)(devices[most_recent].events)); | |
8b0dabea | 646 | fd = dev_open(devices[chosen_drive].devname, O_RDWR|O_EXCL); |
52826846 NB |
647 | if (fd < 0) { |
648 | fprintf(stderr, Name ": Couldn't open %s for write - not updating\n", | |
649 | devices[chosen_drive].devname); | |
650 | devices[chosen_drive].events = 0; | |
651 | continue; | |
652 | } | |
82d9eba6 | 653 | if (st->ss->load_super(st,fd, &super, NULL)) { |
52826846 NB |
654 | close(fd); |
655 | fprintf(stderr, Name ": RAID superblock disappeared from %s - not updating.\n", | |
656 | devices[chosen_drive].devname); | |
657 | devices[chosen_drive].events = 0; | |
658 | continue; | |
659 | } | |
4b1ac34b | 660 | info.events = devices[most_recent].events; |
67a8c82d NB |
661 | st->ss->update_super(&info, super, "force-one", |
662 | devices[chosen_drive].devname, verbose, | |
663 | 0, NULL); | |
4b1ac34b | 664 | |
96395475 | 665 | if (st->ss->store_super(st, fd, super)) { |
52826846 NB |
666 | close(fd); |
667 | fprintf(stderr, Name ": Could not re-write superblock on %s\n", | |
668 | devices[chosen_drive].devname); | |
669 | devices[chosen_drive].events = 0; | |
4b1ac34b | 670 | free(super); |
52826846 NB |
671 | continue; |
672 | } | |
673 | close(fd); | |
674 | devices[chosen_drive].events = devices[most_recent].events; | |
675 | devices[chosen_drive].uptodate = 1; | |
265e0f17 | 676 | avail[chosen_drive] = 1; |
52826846 | 677 | okcnt++; |
4b1ac34b | 678 | free(super); |
64c4757e | 679 | } |
52826846 NB |
680 | |
681 | /* Now we want to look at the superblock which the kernel will base things on | |
682 | * and compare the devices that we think are working with the devices that the | |
683 | * superblock thinks are working. | |
684 | * If there are differences and --force is given, then update this chosen | |
685 | * superblock. | |
686 | */ | |
cd29a5c8 | 687 | chosen_drive = -1; |
4b1ac34b | 688 | super = NULL; |
56eedc1a | 689 | for (i=0; chosen_drive < 0 && i<bestcnt; i++) { |
52826846 NB |
690 | int j = best[i]; |
691 | int fd; | |
4b1ac34b | 692 | |
52826846 NB |
693 | if (j<0) |
694 | continue; | |
695 | if (!devices[j].uptodate) | |
696 | continue; | |
697 | chosen_drive = j; | |
8b0dabea | 698 | if ((fd=dev_open(devices[j].devname, O_RDONLY|O_EXCL))< 0) { |
52826846 NB |
699 | fprintf(stderr, Name ": Cannot open %s: %s\n", |
700 | devices[j].devname, strerror(errno)); | |
d55e3aef | 701 | if (must_close) close(mdfd); |
52826846 NB |
702 | return 1; |
703 | } | |
82d9eba6 | 704 | if (st->ss->load_super(st,fd, &super, NULL)) { |
52826846 NB |
705 | close(fd); |
706 | fprintf(stderr, Name ": RAID superblock has disappeared from %s\n", | |
707 | devices[j].devname); | |
d55e3aef | 708 | if (must_close) close(mdfd); |
52826846 NB |
709 | return 1; |
710 | } | |
711 | close(fd); | |
712 | } | |
4b1ac34b NB |
713 | if (super == NULL) { |
714 | fprintf(stderr, Name ": No suitable drives found for %s\n", mddev); | |
d55e3aef | 715 | if (must_close) close(mdfd); |
4b1ac34b NB |
716 | return 1; |
717 | } | |
31317663 | 718 | st->ss->getinfo_super(&info, super); |
56eedc1a | 719 | for (i=0; i<bestcnt; i++) { |
52826846 | 720 | int j = best[i]; |
98c6faba | 721 | unsigned int desired_state; |
11a3e71d | 722 | |
4b1ac34b | 723 | if (i < info.array.raid_disks) |
11a3e71d NB |
724 | desired_state = (1<<MD_DISK_ACTIVE) | (1<<MD_DISK_SYNC); |
725 | else | |
726 | desired_state = 0; | |
727 | ||
52826846 NB |
728 | if (j<0) |
729 | continue; | |
730 | if (!devices[j].uptodate) | |
731 | continue; | |
6a41304b | 732 | info.disk.number = devices[j].disk_nr; |
fbf8a0b7 | 733 | info.disk.raid_disk = i; |
4b1ac34b NB |
734 | info.disk.state = desired_state; |
735 | ||
52826846 | 736 | if (devices[j].uptodate && |
e5eac01f | 737 | st->ss->update_super(&info, super, "assemble", NULL, verbose, 0, NULL)) { |
52826846 | 738 | if (force) { |
dab6685f NB |
739 | if (verbose >= 0) |
740 | fprintf(stderr, Name ": " | |
741 | "clearing FAULTY flag for device %d in %s for %s\n", | |
742 | j, mddev, devices[j].devname); | |
4b1ac34b | 743 | change = 1; |
52826846 | 744 | } else { |
dab6685f NB |
745 | if (verbose >= -1) |
746 | fprintf(stderr, Name ": " | |
747 | "device %d in %s has wrong state in superblock, but %s seems ok\n", | |
748 | i, mddev, devices[j].devname); | |
52826846 NB |
749 | } |
750 | } | |
4b1ac34b | 751 | #if 0 |
52826846 NB |
752 | if (!devices[j].uptodate && |
753 | !(super.disks[i].state & (1 << MD_DISK_FAULTY))) { | |
754 | fprintf(stderr, Name ": devices %d of %s is not marked FAULTY in superblock, but cannot be found\n", | |
755 | i, mddev); | |
756 | } | |
4b1ac34b | 757 | #endif |
52826846 | 758 | } |
67a8c82d NB |
759 | if (force && okcnt < info.array.raid_disks) { |
760 | change += st->ss->update_super(&info, super, "force-array", | |
761 | devices[chosen_drive].devname, verbose, | |
762 | 0, NULL); | |
583315d9 | 763 | clean = 1; |
d013a55e | 764 | } |
52826846 | 765 | |
4b1ac34b | 766 | if (change) { |
52826846 | 767 | int fd; |
8b0dabea | 768 | fd = dev_open(devices[chosen_drive].devname, O_RDWR|O_EXCL); |
52826846 | 769 | if (fd < 0) { |
353632d9 | 770 | fprintf(stderr, Name ": Could not open %s for write - cannot Assemble array.\n", |
52826846 | 771 | devices[chosen_drive].devname); |
d55e3aef | 772 | if (must_close) close(mdfd); |
52826846 NB |
773 | return 1; |
774 | } | |
96395475 | 775 | if (st->ss->store_super(st, fd, super)) { |
52826846 NB |
776 | close(fd); |
777 | fprintf(stderr, Name ": Could not re-write superblock on %s\n", | |
778 | devices[chosen_drive].devname); | |
d55e3aef | 779 | if (must_close) close(mdfd); |
52826846 NB |
780 | return 1; |
781 | } | |
782 | close(fd); | |
52826846 NB |
783 | } |
784 | ||
353632d9 NB |
785 | /* If we are in the middle of a reshape we may need to restore saved data |
786 | * that was moved aside due to the reshape overwriting live data | |
787 | * The code of doing this lives in Grow.c | |
788 | */ | |
39c5a909 | 789 | #ifndef MDASSEMBLE |
353632d9 NB |
790 | if (info.reshape_active) { |
791 | int err = 0; | |
792 | int *fdlist = malloc(sizeof(int)* bestcnt); | |
793 | for (i=0; i<bestcnt; i++) { | |
794 | int j = best[i]; | |
795 | if (j >= 0) { | |
796 | fdlist[i] = dev_open(devices[j].devname, O_RDWR|O_EXCL); | |
797 | if (fdlist[i] < 0) { | |
798 | fprintf(stderr, Name ": Could not open %s for write - cannot Assemble array.\n", | |
799 | devices[j].devname); | |
800 | err = 1; | |
801 | break; | |
802 | } | |
803 | } else | |
804 | fdlist[i] = -1; | |
805 | } | |
806 | if (!err) | |
06b0d786 | 807 | err = Grow_restart(st, &info, fdlist, bestcnt, backup_file); |
353632d9 NB |
808 | while (i>0) { |
809 | i--; | |
810 | if (fdlist[i]>=0) close(fdlist[i]); | |
811 | } | |
812 | if (err) { | |
813 | fprintf(stderr, Name ": Failed to restore critical section for reshape, sorry.\n"); | |
d55e3aef | 814 | if (must_close) close(mdfd); |
353632d9 NB |
815 | return err; |
816 | } | |
817 | } | |
39c5a909 | 818 | #endif |
aa88f531 NB |
819 | /* count number of in-sync devices according to the superblock. |
820 | * We must have this number to start the array without -s or -R | |
821 | */ | |
4b1ac34b | 822 | req_cnt = info.array.working_disks; |
aa88f531 | 823 | |
64c4757e NB |
824 | /* Almost ready to actually *do* something */ |
825 | if (!old_linux) { | |
fbf8a0b7 NB |
826 | int rv; |
827 | if ((vers % 100) >= 1) { /* can use different versions */ | |
828 | mdu_array_info_t inf; | |
829 | memset(&inf, 0, sizeof(inf)); | |
830 | inf.major_version = st->ss->major; | |
831 | inf.minor_version = st->minor_version; | |
832 | rv = ioctl(mdfd, SET_ARRAY_INFO, &inf); | |
b8a8ccf9 | 833 | } else |
fbf8a0b7 NB |
834 | rv = ioctl(mdfd, SET_ARRAY_INFO, NULL); |
835 | ||
836 | if (rv) { | |
682c7051 | 837 | fprintf(stderr, Name ": SET_ARRAY_INFO failed for %s: %s\n", |
64c4757e | 838 | mddev, strerror(errno)); |
d55e3aef | 839 | if (must_close) close(mdfd); |
64c4757e NB |
840 | return 1; |
841 | } | |
11484a63 | 842 | if (ident->bitmap_fd >= 0) { |
c82f047c NB |
843 | if (ioctl(mdfd, SET_BITMAP_FILE, ident->bitmap_fd) != 0) { |
844 | fprintf(stderr, Name ": SET_BITMAP_FILE failed.\n"); | |
d55e3aef | 845 | if (must_close) close(mdfd); |
c82f047c NB |
846 | return 1; |
847 | } | |
7ef02d01 NB |
848 | } else if (ident->bitmap_file) { |
849 | /* From config file */ | |
850 | int bmfd = open(ident->bitmap_file, O_RDWR); | |
851 | if (bmfd < 0) { | |
852 | fprintf(stderr, Name ": Could not open bitmap file %s\n", | |
853 | ident->bitmap_file); | |
d55e3aef | 854 | if (must_close) close(mdfd); |
7ef02d01 NB |
855 | return 1; |
856 | } | |
857 | if (ioctl(mdfd, SET_BITMAP_FILE, bmfd) != 0) { | |
858 | fprintf(stderr, Name ": Failed to set bitmapfile for %s\n", mddev); | |
859 | close(bmfd); | |
d55e3aef | 860 | if (must_close) close(mdfd); |
7ef02d01 NB |
861 | return 1; |
862 | } | |
863 | close(bmfd); | |
c82f047c | 864 | } |
7ef02d01 | 865 | |
52826846 | 866 | /* First, add the raid disks, but add the chosen one last */ |
56eedc1a | 867 | for (i=0; i<= bestcnt; i++) { |
52826846 | 868 | int j; |
56eedc1a | 869 | if (i < bestcnt) { |
52826846 NB |
870 | j = best[i]; |
871 | if (j == chosen_drive) | |
872 | continue; | |
873 | } else | |
874 | j = chosen_drive; | |
875 | ||
56eedc1a | 876 | if (j >= 0 /* && devices[j].uptodate */) { |
64c4757e NB |
877 | mdu_disk_info_t disk; |
878 | memset(&disk, 0, sizeof(disk)); | |
879 | disk.major = devices[j].major; | |
880 | disk.minor = devices[j].minor; | |
881 | if (ioctl(mdfd, ADD_NEW_DISK, &disk)!=0) { | |
682c7051 | 882 | fprintf(stderr, Name ": failed to add %s to %s: %s\n", |
64c4757e NB |
883 | devices[j].devname, |
884 | mddev, | |
885 | strerror(errno)); | |
4b1ac34b | 886 | if (i < info.array.raid_disks || i == bestcnt) |
52826846 NB |
887 | okcnt--; |
888 | else | |
889 | sparecnt--; | |
dab6685f | 890 | } else if (verbose > 0) |
52826846 NB |
891 | fprintf(stderr, Name ": added %s to %s as %d\n", |
892 | devices[j].devname, mddev, devices[j].raid_disk); | |
dab6685f | 893 | } else if (verbose > 0 && i < info.array.raid_disks) |
682c7051 | 894 | fprintf(stderr, Name ": no uptodate device for slot %d of %s\n", |
64c4757e NB |
895 | i, mddev); |
896 | } | |
52826846 | 897 | |
64c4757e | 898 | if (runstop == 1 || |
b8a8ccf9 | 899 | (runstop <= 0 && |
583315d9 NB |
900 | ( enough(info.array.level, info.array.raid_disks, |
901 | info.array.layout, clean, avail, okcnt) && | |
aa88f531 NB |
902 | (okcnt >= req_cnt || start_partial_ok) |
903 | ))) { | |
82b27616 | 904 | if (ioctl(mdfd, RUN_ARRAY, NULL)==0) { |
dab6685f NB |
905 | if (verbose >= 0) { |
906 | fprintf(stderr, Name ": %s has been started with %d drive%s", | |
907 | mddev, okcnt, okcnt==1?"":"s"); | |
b8a8ccf9 | 908 | if (okcnt < info.array.raid_disks) |
dab6685f NB |
909 | fprintf(stderr, " (out of %d)", info.array.raid_disks); |
910 | if (sparecnt) | |
911 | fprintf(stderr, " and %d spare%s", sparecnt, sparecnt==1?"":"s"); | |
912 | fprintf(stderr, ".\n"); | |
913 | } | |
589395d6 NB |
914 | if (must_close) { |
915 | int usecs = 1; | |
916 | close(mdfd); | |
917 | /* There is a nasty race with 'mdadm --monitor'. | |
918 | * If it opens this device before we close it, | |
919 | * it gets an incomplete open on which IO | |
920 | * doesn't work and the capacity if wrong. | |
921 | * If we reopen (to check for layered devices) | |
922 | * before --monitor closes, we loose. | |
923 | * | |
924 | * So: wait upto 1 second for there to be | |
925 | * a non-zero capacity. | |
926 | */ | |
927 | while (usecs < 1000) { | |
928 | mdfd = open(mddev, O_RDONLY); | |
929 | if (mdfd >= 0) { | |
930 | unsigned long size; | |
931 | if (ioctl(mdfd, BLKGETSIZE, &size) == 0 && | |
932 | size > 0) | |
933 | break; | |
934 | close(mdfd); | |
935 | } | |
936 | usleep(usecs); | |
937 | usecs <<= 1; | |
938 | } | |
939 | } | |
64c4757e | 940 | return 0; |
82b27616 | 941 | } |
682c7051 | 942 | fprintf(stderr, Name ": failed to RUN_ARRAY %s: %s\n", |
64c4757e | 943 | mddev, strerror(errno)); |
583315d9 NB |
944 | |
945 | if (!enough(info.array.level, info.array.raid_disks, | |
946 | info.array.layout, 1, avail, okcnt)) | |
947 | fprintf(stderr, Name ": Not enough devices to " | |
948 | "start the array.\n"); | |
949 | else if (!enough(info.array.level, | |
950 | info.array.raid_disks, | |
951 | info.array.layout, clean, | |
952 | avail, okcnt)) | |
953 | fprintf(stderr, Name ": Not enough devices to " | |
954 | "start the array while not clean " | |
955 | "- consider --force.\n"); | |
956 | ||
d55e3aef | 957 | if (must_close) close(mdfd); |
64c4757e NB |
958 | return 1; |
959 | } | |
82b27616 | 960 | if (runstop == -1) { |
b8a8ccf9 | 961 | fprintf(stderr, Name ": %s assembled from %d drive%s", |
52826846 | 962 | mddev, okcnt, okcnt==1?"":"s"); |
b8a8ccf9 NB |
963 | if (okcnt != info.array.raid_disks) |
964 | fprintf(stderr, " (out of %d)", info.array.raid_disks); | |
965 | fprintf(stderr, ", but not started.\n"); | |
d55e3aef | 966 | if (must_close) close(mdfd); |
64c4757e | 967 | return 0; |
82b27616 | 968 | } |
dab6685f NB |
969 | if (verbose >= 0) { |
970 | fprintf(stderr, Name ": %s assembled from %d drive%s", mddev, okcnt, okcnt==1?"":"s"); | |
971 | if (sparecnt) | |
972 | fprintf(stderr, " and %d spare%s", sparecnt, sparecnt==1?"":"s"); | |
583315d9 NB |
973 | if (!enough(info.array.level, info.array.raid_disks, |
974 | info.array.layout, 1, avail, okcnt)) | |
dab6685f | 975 | fprintf(stderr, " - not enough to start the array.\n"); |
583315d9 NB |
976 | else if (!enough(info.array.level, |
977 | info.array.raid_disks, | |
978 | info.array.layout, clean, | |
979 | avail, okcnt)) | |
980 | fprintf(stderr, " - not enough to start the " | |
981 | "array while not clean - consider " | |
982 | "--force.\n"); | |
dab6685f NB |
983 | else { |
984 | if (req_cnt == info.array.raid_disks) | |
985 | fprintf(stderr, " - need all %d to start it", req_cnt); | |
986 | else | |
987 | fprintf(stderr, " - need %d of %d to start", req_cnt, info.array.raid_disks); | |
988 | fprintf(stderr, " (use --run to insist).\n"); | |
989 | } | |
aa88f531 | 990 | } |
d55e3aef | 991 | if (must_close) close(mdfd); |
64c4757e | 992 | return 1; |
82b27616 | 993 | } else { |
52826846 NB |
994 | /* The "chosen_drive" is a good choice, and if necessary, the superblock has |
995 | * been updated to point to the current locations of devices. | |
996 | * so we can just start the array | |
82b27616 | 997 | */ |
cd29a5c8 | 998 | unsigned long dev; |
0df46c2a | 999 | dev = makedev(devices[chosen_drive].major, |
82b27616 NB |
1000 | devices[chosen_drive].minor); |
1001 | if (ioctl(mdfd, START_ARRAY, dev)) { | |
1002 | fprintf(stderr, Name ": Cannot start array: %s\n", | |
1003 | strerror(errno)); | |
1004 | } | |
1005 | ||
64c4757e | 1006 | } |
d55e3aef | 1007 | if (must_close) close(mdfd); |
e0d19036 | 1008 | return 0; |
64c4757e | 1009 | } |