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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; |
bf4fb153 | 139 | int bitmap_done; |
589395d6 | 140 | int start_partial_ok = (runstop >= 0) && (force || devlist==NULL || mdfd < 0); |
98c6faba | 141 | unsigned int num_devs; |
5787fa49 | 142 | mddev_dev_t tmpdev; |
4b1ac34b | 143 | struct mdinfo info; |
265e0f17 | 144 | char *avail; |
308e1801 | 145 | int nextspare = 0; |
8a46fe84 | 146 | |
682c7051 | 147 | if (get_linux_version() < 2004000) |
64c4757e NB |
148 | old_linux = 1; |
149 | ||
8a46fe84 NB |
150 | if (mdfd >= 0) { |
151 | vers = md_get_version(mdfd); | |
152 | if (vers <= 0) { | |
153 | fprintf(stderr, Name ": %s appears not to be an md device.\n", mddev); | |
154 | return 1; | |
155 | } | |
156 | if (vers < 9000) { | |
157 | fprintf(stderr, Name ": Assemble requires driver version 0.90.0 or later.\n" | |
158 | " Upgrade your kernel or try --build\n"); | |
159 | return 1; | |
160 | } | |
64c4757e | 161 | |
8a46fe84 NB |
162 | if (ioctl(mdfd, GET_ARRAY_INFO, &info.array)>=0) { |
163 | fprintf(stderr, Name ": device %s already active - cannot assemble it\n", | |
164 | mddev); | |
165 | return 1; | |
166 | } | |
167 | ioctl(mdfd, STOP_ARRAY, NULL); /* just incase it was started but has no content */ | |
168 | } | |
64c4757e | 169 | /* |
52826846 NB |
170 | * If any subdevs are listed, then any that don't |
171 | * match ident are discarded. Remainder must all match and | |
172 | * become the array. | |
173 | * If no subdevs, then we scan all devices in the config file, but | |
174 | * there must be something in the identity | |
64c4757e | 175 | */ |
64c4757e | 176 | |
cd29a5c8 | 177 | if (!devlist && |
52826846 NB |
178 | ident->uuid_set == 0 && |
179 | ident->super_minor < 0 && | |
180 | ident->devices == NULL) { | |
181 | fprintf(stderr, Name ": No identity information available for %s - cannot assemble.\n", | |
8a46fe84 | 182 | mddev ? mddev : "further assembly"); |
52826846 | 183 | return 1; |
64c4757e | 184 | } |
cd29a5c8 | 185 | if (devlist == NULL) |
8aec876d | 186 | devlist = conf_get_devs(); |
da6b5ca9 NB |
187 | else if (mdfd >= 0) |
188 | inargv = 1; | |
64c4757e | 189 | |
60e1bc1a NB |
190 | try_again: |
191 | ||
5787fa49 NB |
192 | tmpdev = devlist; num_devs = 0; |
193 | while (tmpdev) { | |
da6b5ca9 NB |
194 | if (tmpdev->used) |
195 | tmpdev->used = 2; | |
196 | else | |
197 | num_devs++; | |
5787fa49 NB |
198 | tmpdev = tmpdev->next; |
199 | } | |
5787fa49 NB |
200 | devices = malloc(num_devs * sizeof(*devices)); |
201 | ||
82d9eba6 | 202 | if (!st && ident->st) st = ident->st; |
64c4757e | 203 | |
dab6685f | 204 | if (verbose>0) |
82b27616 | 205 | fprintf(stderr, Name ": looking for devices for %s\n", |
8a46fe84 | 206 | mddev ? mddev : "further assembly"); |
82b27616 | 207 | |
811e6cbe NB |
208 | /* first walk the list of devices to find a consistent set |
209 | * that match the criterea, if that is possible. | |
210 | * We flag the one we like with 'used'. | |
211 | */ | |
212 | for (tmpdev = devlist; | |
213 | tmpdev; | |
214 | tmpdev = tmpdev->next) { | |
215 | char *devname = tmpdev->devname; | |
64c4757e NB |
216 | int dfd; |
217 | struct stat stb; | |
82d9eba6 | 218 | struct supertype *tst = st; |
52826846 | 219 | |
da6b5ca9 NB |
220 | if (tmpdev->used > 1) continue; |
221 | ||
52826846 | 222 | if (ident->devices && |
56eedc1a | 223 | !match_oneof(ident->devices, devname)) { |
6a41304b | 224 | if ((inargv && verbose>=0) || verbose > 0) |
56eedc1a | 225 | fprintf(stderr, Name ": %s is not one of %s\n", devname, ident->devices); |
52826846 | 226 | continue; |
56eedc1a | 227 | } |
4b1ac34b NB |
228 | |
229 | if (super) { | |
230 | free(super); | |
231 | super = NULL; | |
232 | } | |
52826846 | 233 | |
8b0dabea | 234 | dfd = dev_open(devname, O_RDONLY|O_EXCL); |
64c4757e | 235 | if (dfd < 0) { |
6a41304b | 236 | if ((inargv && verbose >= 0) || verbose > 0) |
682c7051 | 237 | fprintf(stderr, Name ": cannot open device %s: %s\n", |
64c4757e | 238 | devname, strerror(errno)); |
da6b5ca9 | 239 | tmpdev->used = 2; |
52826846 NB |
240 | } else if (fstat(dfd, &stb)< 0) { |
241 | /* Impossible! */ | |
242 | fprintf(stderr, Name ": fstat failed for %s: %s\n", | |
243 | devname, strerror(errno)); | |
da6b5ca9 | 244 | tmpdev->used = 2; |
cd29a5c8 NB |
245 | } else if ((stb.st_mode & S_IFMT) != S_IFBLK) { |
246 | fprintf(stderr, Name ": %s is not a block device.\n", | |
52826846 | 247 | devname); |
da6b5ca9 | 248 | tmpdev->used = 2; |
82d9eba6 | 249 | } else if (!tst && (tst = guess_super(dfd)) == NULL) { |
6a41304b | 250 | if ((inargv && verbose >= 0) || verbose > 0) |
da6b5ca9 NB |
251 | fprintf(stderr, Name ": no recogniseable superblock on %s\n", |
252 | devname); | |
253 | tmpdev->used = 2; | |
82d9eba6 | 254 | } else if (tst->ss->load_super(tst,dfd, &super, NULL)) { |
6a41304b | 255 | if ((inargv && verbose >= 0) || verbose > 0) |
682c7051 | 256 | fprintf( stderr, Name ": no RAID superblock on %s\n", |
64c4757e | 257 | devname); |
52826846 | 258 | } else { |
31317663 | 259 | tst->ss->getinfo_super(&info, super); |
64c4757e | 260 | } |
c06487ce | 261 | if (dfd >= 0) close(dfd); |
52826846 | 262 | |
838acbc2 | 263 | if (ident->uuid_set && (!update || strcmp(update, "uuid")!= 0) && |
f277ce36 | 264 | (!super || same_uuid(info.uuid, ident->uuid, tst->ss->swapuuid)==0)) { |
6a41304b | 265 | if ((inargv && verbose >= 0) || verbose > 0) |
52826846 NB |
266 | fprintf(stderr, Name ": %s has wrong uuid.\n", |
267 | devname); | |
268 | continue; | |
82b27616 | 269 | } |
c4f12c13 | 270 | if (ident->name[0] && (!update || strcmp(update, "name")!= 0) && |
624920bb | 271 | (!super || name_matches(info.name, ident->name, homehost)==0)) { |
6a41304b | 272 | if ((inargv && verbose >= 0) || verbose > 0) |
947fd4dd NB |
273 | fprintf(stderr, Name ": %s has wrong name.\n", |
274 | devname); | |
275 | continue; | |
276 | } | |
98c6faba | 277 | if (ident->super_minor != UnSet && |
4b1ac34b | 278 | (!super || ident->super_minor != info.array.md_minor)) { |
6a41304b | 279 | if ((inargv && verbose >= 0) || verbose > 0) |
52826846 | 280 | fprintf(stderr, Name ": %s has wrong super-minor.\n", |
64c4757e NB |
281 | devname); |
282 | continue; | |
283 | } | |
98c6faba | 284 | if (ident->level != UnSet && |
4b1ac34b | 285 | (!super|| ident->level != info.array.level)) { |
6a41304b | 286 | if ((inargv && verbose >= 0) || verbose > 0) |
cd29a5c8 NB |
287 | fprintf(stderr, Name ": %s has wrong raid level.\n", |
288 | devname); | |
289 | continue; | |
290 | } | |
98c6faba | 291 | if (ident->raid_disks != UnSet && |
4b1ac34b | 292 | (!super || ident->raid_disks!= info.array.raid_disks)) { |
6a41304b | 293 | if ((inargv && verbose >= 0) || verbose > 0) |
cd29a5c8 NB |
294 | fprintf(stderr, Name ": %s requires wrong number of drives.\n", |
295 | devname); | |
296 | continue; | |
297 | } | |
da6b5ca9 NB |
298 | if (mdfd < 0) { |
299 | if (tst == NULL || super == NULL) | |
300 | continue; | |
589395d6 NB |
301 | if (update == NULL && |
302 | tst->ss->match_home(super, homehost)==0) { | |
da6b5ca9 NB |
303 | if ((inargv && verbose >= 0) || verbose > 0) |
304 | fprintf(stderr, Name ": %s is not built for host %s.\n", | |
305 | devname, homehost); | |
306 | /* Auto-assemble, and this is not a usable host */ | |
589395d6 NB |
307 | /* if update != NULL, we are updating the host |
308 | * name... */ | |
da6b5ca9 NB |
309 | continue; |
310 | } | |
311 | } | |
83b6208e | 312 | /* If we are this far, then we are nearly commited to this device. |
52826846 | 313 | * If the super_block doesn't exist, or doesn't match others, |
83b6208e NB |
314 | * then we probably cannot continue |
315 | * However if one of the arrays is for the homehost, and | |
316 | * the other isn't that can disambiguate. | |
52826846 | 317 | */ |
52826846 | 318 | |
4b1ac34b | 319 | if (!super) { |
52826846 NB |
320 | fprintf(stderr, Name ": %s has no superblock - assembly aborted\n", |
321 | devname); | |
4b1ac34b | 322 | free(first_super); |
52826846 NB |
323 | return 1; |
324 | } | |
838acbc2 | 325 | |
83b6208e NB |
326 | if (st == NULL) |
327 | st = tst; | |
328 | if (st->ss != tst->ss || | |
329 | st->minor_version != tst->minor_version || | |
330 | st->ss->compare_super(&first_super, super) != 0) { | |
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 NB |
336 | if (mdfd < 0) |
337 | continue; | |
83b6208e NB |
338 | if (homehost) { |
339 | int first = st->ss->match_home(first_super, homehost); | |
340 | int last = tst->ss->match_home(super, homehost); | |
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); | |
347 | continue; | |
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; | |
357 | continue; | |
358 | } | |
359 | } | |
360 | } | |
52826846 NB |
361 | fprintf(stderr, Name ": superblock on %s doesn't match others - assembly aborted\n", |
362 | devname); | |
4b1ac34b NB |
363 | free(super); |
364 | free(first_super); | |
52826846 | 365 | return 1; |
64c4757e NB |
366 | } |
367 | ||
811e6cbe NB |
368 | tmpdev->used = 1; |
369 | } | |
370 | ||
8a46fe84 NB |
371 | if (mdfd < 0) { |
372 | /* So... it is up to me to open the device. | |
373 | * We create a name '/dev/md/XXX' based on the info in the | |
374 | * superblock, and call open_mddev on that | |
375 | */ | |
da6b5ca9 NB |
376 | mdu_array_info_t inf; |
377 | char *c; | |
378 | if (!first_super) { | |
d55e3aef | 379 | return 2; |
da6b5ca9 NB |
380 | } |
381 | st->ss->getinfo_super(&info, first_super); | |
382 | c = strchr(info.name, ':'); | |
383 | if (c) c++; else c= info.name; | |
41a3b72a NB |
384 | if (isdigit(*c) && ((ident->autof & 7)==4 || (ident->autof&7)==6)) |
385 | /* /dev/md/d0 style for partitionable */ | |
386 | asprintf(&mddev, "/dev/md/d%s", c); | |
387 | else | |
388 | asprintf(&mddev, "/dev/md/%s", c); | |
da6b5ca9 | 389 | mdfd = open_mddev(mddev, ident->autof); |
60e1bc1a NB |
390 | if (mdfd < 0) { |
391 | free(first_super); | |
392 | free(devices); | |
393 | first_super = NULL; | |
394 | goto try_again; | |
395 | } | |
da6b5ca9 NB |
396 | vers = md_get_version(mdfd); |
397 | if (ioctl(mdfd, GET_ARRAY_INFO, &inf)==0) { | |
60e1bc1a NB |
398 | for (tmpdev = devlist ; |
399 | tmpdev && tmpdev->used != 1; | |
400 | tmpdev = tmpdev->next) | |
401 | ; | |
da6b5ca9 | 402 | fprintf(stderr, Name ": %s already active, cannot restart it!\n", mddev); |
60e1bc1a NB |
403 | if (tmpdev) |
404 | fprintf(stderr, Name ": %s needed for %s...\n", | |
405 | mddev, tmpdev->devname); | |
da6b5ca9 | 406 | close(mdfd); |
60e1bc1a | 407 | mdfd = -1; |
da6b5ca9 | 408 | free(first_super); |
60e1bc1a NB |
409 | free(devices); |
410 | first_super = NULL; | |
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; | |
427 | fstat(mdfd, &stb2); | |
7d99579f NB |
428 | |
429 | if (strcmp(update, "uuid")==0 && | |
430 | !ident->uuid_set) { | |
431 | int rfd; | |
432 | if ((rfd = open("/dev/urandom", O_RDONLY)) < 0 || | |
433 | read(rfd, ident->uuid, 16) != 16) { | |
434 | *(__u32*)(ident->uuid) = random(); | |
435 | *(__u32*)(ident->uuid+1) = random(); | |
436 | *(__u32*)(ident->uuid+2) = random(); | |
437 | *(__u32*)(ident->uuid+3) = random(); | |
438 | } | |
439 | if (rfd >= 0) close(rfd); | |
7d99579f | 440 | } |
811e6cbe NB |
441 | dfd = dev_open(devname, O_RDWR|O_EXCL); |
442 | ||
0430ed48 NB |
443 | remove_partitions(dfd); |
444 | ||
811e6cbe NB |
445 | if (super) { |
446 | free(super); | |
447 | super = NULL; | |
448 | } | |
449 | ||
450 | st->ss->load_super(st, dfd, &super, NULL); | |
451 | st->ss->getinfo_super(&info, super); | |
452 | ||
7d99579f | 453 | memcpy(info.uuid, ident->uuid, 16); |
e5eac01f | 454 | strcpy(info.name, ident->name); |
811e6cbe NB |
455 | info.array.md_minor = minor(stb2.st_rdev); |
456 | ||
e5eac01f NB |
457 | st->ss->update_super(&info, super, update, devname, verbose, |
458 | ident->uuid_set, homehost); | |
459 | if (strcmp(update, "uuid")==0 && | |
460 | !ident->uuid_set) { | |
461 | ident->uuid_set = 1; | |
462 | memcpy(ident->uuid, info.uuid, 16); | |
463 | } | |
b8a8ccf9 | 464 | if (dfd < 0) |
5787fa49 NB |
465 | fprintf(stderr, Name ": Cannot open %s for superblock update\n", |
466 | devname); | |
96395475 | 467 | else if (st->ss->store_super(st, dfd, super)) |
5787fa49 NB |
468 | fprintf(stderr, Name ": Could not re-write superblock on %s.\n", |
469 | devname); | |
470 | if (dfd >= 0) | |
471 | close(dfd); | |
8131b493 NB |
472 | |
473 | if (strcmp(update, "uuid")==0 && | |
bf4fb153 NB |
474 | ident->bitmap_fd >= 0 && !bitmap_done) { |
475 | if (bitmap_update_uuid(ident->bitmap_fd, info.uuid, st->ss->swapuuid) != 0) | |
476 | fprintf(stderr, Name ": Could not update uuid on external bitmap.\n"); | |
477 | else | |
478 | bitmap_done = 1; | |
479 | } | |
d1f1011b NB |
480 | } else |
481 | #endif | |
482 | { | |
da6b5ca9 NB |
483 | int dfd; |
484 | dfd = dev_open(devname, O_RDWR|O_EXCL); | |
485 | ||
0430ed48 NB |
486 | remove_partitions(dfd); |
487 | ||
da6b5ca9 NB |
488 | if (super) { |
489 | free(super); | |
490 | super = NULL; | |
491 | } | |
492 | ||
493 | st->ss->load_super(st, dfd, &super, NULL); | |
494 | st->ss->getinfo_super(&info, super); | |
495 | close(dfd); | |
5787fa49 NB |
496 | } |
497 | ||
811e6cbe NB |
498 | stat(devname, &stb); |
499 | ||
dab6685f | 500 | if (verbose > 0) |
cd29a5c8 | 501 | fprintf(stderr, Name ": %s is identified as a member of %s, slot %d.\n", |
4b1ac34b | 502 | devname, mddev, info.disk.raid_disk); |
64c4757e | 503 | devices[devcnt].devname = devname; |
0df46c2a NB |
504 | devices[devcnt].major = major(stb.st_rdev); |
505 | devices[devcnt].minor = minor(stb.st_rdev); | |
4b1ac34b NB |
506 | devices[devcnt].oldmajor = info.disk.major; |
507 | devices[devcnt].oldminor = info.disk.minor; | |
508 | devices[devcnt].events = info.events; | |
509 | devices[devcnt].raid_disk = info.disk.raid_disk; | |
6a41304b | 510 | devices[devcnt].disk_nr = info.disk.number; |
64c4757e | 511 | devices[devcnt].uptodate = 0; |
4b1ac34b | 512 | devices[devcnt].state = info.disk.state; |
64c4757e NB |
513 | if (most_recent < devcnt) { |
514 | if (devices[devcnt].events | |
515 | > devices[most_recent].events) | |
516 | most_recent = devcnt; | |
517 | } | |
b8a8ccf9 | 518 | if (info.array.level == -4) |
5787fa49 NB |
519 | /* with multipath, the raid_disk from the superblock is meaningless */ |
520 | i = devcnt; | |
521 | else | |
522 | i = devices[devcnt].raid_disk; | |
308e1801 NB |
523 | if (i+1 == 0) { |
524 | if (nextspare < info.array.raid_disks) | |
525 | nextspare = info.array.raid_disks; | |
526 | i = nextspare++; | |
08110d41 NB |
527 | } else { |
528 | if (i >= info.array.raid_disks && | |
529 | i >= nextspare) | |
530 | nextspare = i+1; | |
308e1801 | 531 | } |
98c6faba | 532 | if (i < 10000) { |
56eedc1a | 533 | if (i >= bestcnt) { |
98c6faba | 534 | unsigned int newbestcnt = i+10; |
56eedc1a | 535 | int *newbest = malloc(sizeof(int)*newbestcnt); |
98c6faba | 536 | unsigned int c; |
56eedc1a NB |
537 | for (c=0; c < newbestcnt; c++) |
538 | if (c < bestcnt) | |
539 | newbest[c] = best[c]; | |
540 | else | |
541 | newbest[c] = -1; | |
542 | if (best)free(best); | |
543 | best = newbest; | |
544 | bestcnt = newbestcnt; | |
545 | } | |
6a255b69 NB |
546 | if (best[i] >=0 && |
547 | devices[best[i]].events == devices[devcnt].events && | |
548 | devices[best[i]].minor != devices[devcnt].minor && | |
549 | st->ss->major == 0 && | |
550 | info.array.level != -4) { | |
551 | /* two different devices with identical superblock. | |
552 | * Could be a mis-detection caused by overlapping | |
553 | * partitions. fail-safe. | |
554 | */ | |
555 | fprintf(stderr, Name ": WARNING %s and %s appear" | |
556 | " to have very similar superblocks.\n" | |
557 | " If they are really different, " | |
558 | "please --zero the superblock on one\n" | |
d2df86e0 NB |
559 | " If they are the same or overlap," |
560 | " please remove one from %s.\n", | |
561 | devices[best[i]].devname, devname, | |
562 | inargv ? "the list" : | |
563 | "the\n DEVICE list in mdadm.conf" | |
564 | ); | |
6a255b69 NB |
565 | if (must_close) close(mdfd); |
566 | return 1; | |
567 | } | |
52826846 NB |
568 | if (best[i] == -1 |
569 | || devices[best[i]].events < devices[devcnt].events) | |
570 | best[i] = devcnt; | |
56eedc1a | 571 | } |
64c4757e NB |
572 | devcnt++; |
573 | } | |
574 | ||
4b1ac34b NB |
575 | if (super) |
576 | free(super); | |
577 | super = NULL; | |
578 | ||
586ed405 NB |
579 | if (update && strcmp(update, "byteorder")==0) |
580 | st->minor_version = 90; | |
581 | ||
64c4757e | 582 | if (devcnt == 0) { |
682c7051 | 583 | fprintf(stderr, Name ": no devices found for %s\n", |
64c4757e | 584 | mddev); |
4b1ac34b | 585 | free(first_super); |
d55e3aef | 586 | if (must_close) close(mdfd); |
64c4757e NB |
587 | return 1; |
588 | } | |
4b1ac34b | 589 | |
31317663 | 590 | st->ss->getinfo_super(&info, first_super); |
583315d9 | 591 | clean = info.array.state & 1; |
4b1ac34b | 592 | |
64c4757e NB |
593 | /* now we have some devices that might be suitable. |
594 | * I wonder how many | |
595 | */ | |
265e0f17 NB |
596 | avail = malloc(info.array.raid_disks); |
597 | memset(avail, 0, info.array.raid_disks); | |
64c4757e | 598 | okcnt = 0; |
52826846 | 599 | sparecnt=0; |
56eedc1a | 600 | for (i=0; i< bestcnt ;i++) { |
64c4757e | 601 | int j = best[i]; |
ee04451c NB |
602 | int event_margin = 1; /* always allow a difference of '1' |
603 | * like the kernel does | |
604 | */ | |
64c4757e | 605 | if (j < 0) continue; |
d013a55e NB |
606 | /* note: we ignore error flags in multipath arrays |
607 | * as they don't make sense | |
608 | */ | |
4b1ac34b | 609 | if (info.array.level != -4) |
aa88f531 NB |
610 | if (!(devices[j].state & (1<<MD_DISK_SYNC))) { |
611 | if (!(devices[j].state & (1<<MD_DISK_FAULTY))) | |
612 | sparecnt++; | |
d013a55e | 613 | continue; |
aa88f531 | 614 | } |
cd29a5c8 | 615 | if (devices[j].events+event_margin >= |
64c4757e NB |
616 | devices[most_recent].events) { |
617 | devices[j].uptodate = 1; | |
265e0f17 | 618 | if (i < info.array.raid_disks) { |
52826846 | 619 | okcnt++; |
265e0f17 NB |
620 | avail[i]=1; |
621 | } else | |
52826846 | 622 | sparecnt++; |
64c4757e NB |
623 | } |
624 | } | |
265e0f17 | 625 | while (force && !enough(info.array.level, info.array.raid_disks, |
583315d9 | 626 | info.array.layout, 1, |
265e0f17 | 627 | avail, okcnt)) { |
64c4757e NB |
628 | /* Choose the newest best drive which is |
629 | * not up-to-date, update the superblock | |
630 | * and add it. | |
631 | */ | |
52826846 | 632 | int fd; |
cd29a5c8 | 633 | chosen_drive = -1; |
4b1ac34b | 634 | for (i=0; i<info.array.raid_disks && i < bestcnt; i++) { |
52826846 NB |
635 | int j = best[i]; |
636 | if (j>=0 && | |
637 | !devices[j].uptodate && | |
638 | devices[j].events > 0 && | |
639 | (chosen_drive < 0 || | |
640 | devices[j].events > devices[chosen_drive].events)) | |
641 | chosen_drive = j; | |
642 | } | |
643 | if (chosen_drive < 0) | |
644 | break; | |
dab6685f NB |
645 | if (verbose >= 0) |
646 | fprintf(stderr, Name ": forcing event count in %s(%d) from %d upto %d\n", | |
647 | devices[chosen_drive].devname, devices[chosen_drive].raid_disk, | |
648 | (int)(devices[chosen_drive].events), | |
649 | (int)(devices[most_recent].events)); | |
8b0dabea | 650 | fd = dev_open(devices[chosen_drive].devname, O_RDWR|O_EXCL); |
52826846 NB |
651 | if (fd < 0) { |
652 | fprintf(stderr, Name ": Couldn't open %s for write - not updating\n", | |
653 | devices[chosen_drive].devname); | |
654 | devices[chosen_drive].events = 0; | |
655 | continue; | |
656 | } | |
82d9eba6 | 657 | if (st->ss->load_super(st,fd, &super, NULL)) { |
52826846 NB |
658 | close(fd); |
659 | fprintf(stderr, Name ": RAID superblock disappeared from %s - not updating.\n", | |
660 | devices[chosen_drive].devname); | |
661 | devices[chosen_drive].events = 0; | |
662 | continue; | |
663 | } | |
4b1ac34b | 664 | info.events = devices[most_recent].events; |
67a8c82d NB |
665 | st->ss->update_super(&info, super, "force-one", |
666 | devices[chosen_drive].devname, verbose, | |
667 | 0, NULL); | |
4b1ac34b | 668 | |
96395475 | 669 | if (st->ss->store_super(st, fd, super)) { |
52826846 NB |
670 | close(fd); |
671 | fprintf(stderr, Name ": Could not re-write superblock on %s\n", | |
672 | devices[chosen_drive].devname); | |
673 | devices[chosen_drive].events = 0; | |
4b1ac34b | 674 | free(super); |
52826846 NB |
675 | continue; |
676 | } | |
677 | close(fd); | |
678 | devices[chosen_drive].events = devices[most_recent].events; | |
679 | devices[chosen_drive].uptodate = 1; | |
265e0f17 | 680 | avail[chosen_drive] = 1; |
52826846 | 681 | okcnt++; |
4b1ac34b | 682 | free(super); |
64c4757e | 683 | } |
52826846 NB |
684 | |
685 | /* Now we want to look at the superblock which the kernel will base things on | |
686 | * and compare the devices that we think are working with the devices that the | |
687 | * superblock thinks are working. | |
688 | * If there are differences and --force is given, then update this chosen | |
689 | * superblock. | |
690 | */ | |
cd29a5c8 | 691 | chosen_drive = -1; |
4b1ac34b | 692 | super = NULL; |
56eedc1a | 693 | for (i=0; chosen_drive < 0 && i<bestcnt; i++) { |
52826846 NB |
694 | int j = best[i]; |
695 | int fd; | |
4b1ac34b | 696 | |
52826846 NB |
697 | if (j<0) |
698 | continue; | |
699 | if (!devices[j].uptodate) | |
700 | continue; | |
701 | chosen_drive = j; | |
8b0dabea | 702 | if ((fd=dev_open(devices[j].devname, O_RDONLY|O_EXCL))< 0) { |
52826846 NB |
703 | fprintf(stderr, Name ": Cannot open %s: %s\n", |
704 | devices[j].devname, strerror(errno)); | |
d55e3aef | 705 | if (must_close) close(mdfd); |
52826846 NB |
706 | return 1; |
707 | } | |
82d9eba6 | 708 | if (st->ss->load_super(st,fd, &super, NULL)) { |
52826846 NB |
709 | close(fd); |
710 | fprintf(stderr, Name ": RAID superblock has disappeared from %s\n", | |
711 | devices[j].devname); | |
d55e3aef | 712 | if (must_close) close(mdfd); |
52826846 NB |
713 | return 1; |
714 | } | |
715 | close(fd); | |
716 | } | |
4b1ac34b NB |
717 | if (super == NULL) { |
718 | fprintf(stderr, Name ": No suitable drives found for %s\n", mddev); | |
d55e3aef | 719 | if (must_close) close(mdfd); |
4b1ac34b NB |
720 | return 1; |
721 | } | |
31317663 | 722 | st->ss->getinfo_super(&info, super); |
56eedc1a | 723 | for (i=0; i<bestcnt; i++) { |
52826846 | 724 | int j = best[i]; |
98c6faba | 725 | unsigned int desired_state; |
11a3e71d | 726 | |
4b1ac34b | 727 | if (i < info.array.raid_disks) |
11a3e71d NB |
728 | desired_state = (1<<MD_DISK_ACTIVE) | (1<<MD_DISK_SYNC); |
729 | else | |
730 | desired_state = 0; | |
731 | ||
52826846 NB |
732 | if (j<0) |
733 | continue; | |
734 | if (!devices[j].uptodate) | |
735 | continue; | |
6a41304b | 736 | info.disk.number = devices[j].disk_nr; |
fbf8a0b7 | 737 | info.disk.raid_disk = i; |
4b1ac34b NB |
738 | info.disk.state = desired_state; |
739 | ||
52826846 | 740 | if (devices[j].uptodate && |
e5eac01f | 741 | st->ss->update_super(&info, super, "assemble", NULL, verbose, 0, NULL)) { |
52826846 | 742 | if (force) { |
dab6685f NB |
743 | if (verbose >= 0) |
744 | fprintf(stderr, Name ": " | |
745 | "clearing FAULTY flag for device %d in %s for %s\n", | |
746 | j, mddev, devices[j].devname); | |
4b1ac34b | 747 | change = 1; |
52826846 | 748 | } else { |
dab6685f NB |
749 | if (verbose >= -1) |
750 | fprintf(stderr, Name ": " | |
751 | "device %d in %s has wrong state in superblock, but %s seems ok\n", | |
752 | i, mddev, devices[j].devname); | |
52826846 NB |
753 | } |
754 | } | |
4b1ac34b | 755 | #if 0 |
52826846 NB |
756 | if (!devices[j].uptodate && |
757 | !(super.disks[i].state & (1 << MD_DISK_FAULTY))) { | |
758 | fprintf(stderr, Name ": devices %d of %s is not marked FAULTY in superblock, but cannot be found\n", | |
759 | i, mddev); | |
760 | } | |
4b1ac34b | 761 | #endif |
52826846 | 762 | } |
67a8c82d NB |
763 | if (force && okcnt < info.array.raid_disks) { |
764 | change += st->ss->update_super(&info, super, "force-array", | |
765 | devices[chosen_drive].devname, verbose, | |
766 | 0, NULL); | |
583315d9 | 767 | clean = 1; |
d013a55e | 768 | } |
52826846 | 769 | |
4b1ac34b | 770 | if (change) { |
52826846 | 771 | int fd; |
8b0dabea | 772 | fd = dev_open(devices[chosen_drive].devname, O_RDWR|O_EXCL); |
52826846 | 773 | if (fd < 0) { |
353632d9 | 774 | fprintf(stderr, Name ": Could not open %s for write - cannot Assemble array.\n", |
52826846 | 775 | devices[chosen_drive].devname); |
d55e3aef | 776 | if (must_close) close(mdfd); |
52826846 NB |
777 | return 1; |
778 | } | |
96395475 | 779 | if (st->ss->store_super(st, fd, super)) { |
52826846 NB |
780 | close(fd); |
781 | fprintf(stderr, Name ": Could not re-write superblock on %s\n", | |
782 | devices[chosen_drive].devname); | |
d55e3aef | 783 | if (must_close) close(mdfd); |
52826846 NB |
784 | return 1; |
785 | } | |
786 | close(fd); | |
52826846 NB |
787 | } |
788 | ||
353632d9 NB |
789 | /* If we are in the middle of a reshape we may need to restore saved data |
790 | * that was moved aside due to the reshape overwriting live data | |
791 | * The code of doing this lives in Grow.c | |
792 | */ | |
39c5a909 | 793 | #ifndef MDASSEMBLE |
353632d9 NB |
794 | if (info.reshape_active) { |
795 | int err = 0; | |
796 | int *fdlist = malloc(sizeof(int)* bestcnt); | |
797 | for (i=0; i<bestcnt; i++) { | |
798 | int j = best[i]; | |
799 | if (j >= 0) { | |
800 | fdlist[i] = dev_open(devices[j].devname, O_RDWR|O_EXCL); | |
801 | if (fdlist[i] < 0) { | |
802 | fprintf(stderr, Name ": Could not open %s for write - cannot Assemble array.\n", | |
803 | devices[j].devname); | |
804 | err = 1; | |
805 | break; | |
806 | } | |
807 | } else | |
808 | fdlist[i] = -1; | |
809 | } | |
810 | if (!err) | |
06b0d786 | 811 | err = Grow_restart(st, &info, fdlist, bestcnt, backup_file); |
353632d9 NB |
812 | while (i>0) { |
813 | i--; | |
814 | if (fdlist[i]>=0) close(fdlist[i]); | |
815 | } | |
816 | if (err) { | |
817 | fprintf(stderr, Name ": Failed to restore critical section for reshape, sorry.\n"); | |
d55e3aef | 818 | if (must_close) close(mdfd); |
353632d9 NB |
819 | return err; |
820 | } | |
821 | } | |
39c5a909 | 822 | #endif |
aa88f531 NB |
823 | /* count number of in-sync devices according to the superblock. |
824 | * We must have this number to start the array without -s or -R | |
825 | */ | |
4b1ac34b | 826 | req_cnt = info.array.working_disks; |
aa88f531 | 827 | |
64c4757e NB |
828 | /* Almost ready to actually *do* something */ |
829 | if (!old_linux) { | |
fbf8a0b7 NB |
830 | int rv; |
831 | if ((vers % 100) >= 1) { /* can use different versions */ | |
832 | mdu_array_info_t inf; | |
833 | memset(&inf, 0, sizeof(inf)); | |
834 | inf.major_version = st->ss->major; | |
835 | inf.minor_version = st->minor_version; | |
836 | rv = ioctl(mdfd, SET_ARRAY_INFO, &inf); | |
b8a8ccf9 | 837 | } else |
fbf8a0b7 NB |
838 | rv = ioctl(mdfd, SET_ARRAY_INFO, NULL); |
839 | ||
840 | if (rv) { | |
682c7051 | 841 | fprintf(stderr, Name ": SET_ARRAY_INFO failed for %s: %s\n", |
64c4757e | 842 | mddev, strerror(errno)); |
d55e3aef | 843 | if (must_close) close(mdfd); |
64c4757e NB |
844 | return 1; |
845 | } | |
11484a63 | 846 | if (ident->bitmap_fd >= 0) { |
c82f047c NB |
847 | if (ioctl(mdfd, SET_BITMAP_FILE, ident->bitmap_fd) != 0) { |
848 | fprintf(stderr, Name ": SET_BITMAP_FILE failed.\n"); | |
d55e3aef | 849 | if (must_close) close(mdfd); |
c82f047c NB |
850 | return 1; |
851 | } | |
7ef02d01 NB |
852 | } else if (ident->bitmap_file) { |
853 | /* From config file */ | |
854 | int bmfd = open(ident->bitmap_file, O_RDWR); | |
855 | if (bmfd < 0) { | |
856 | fprintf(stderr, Name ": Could not open bitmap file %s\n", | |
857 | ident->bitmap_file); | |
d55e3aef | 858 | if (must_close) close(mdfd); |
7ef02d01 NB |
859 | return 1; |
860 | } | |
861 | if (ioctl(mdfd, SET_BITMAP_FILE, bmfd) != 0) { | |
862 | fprintf(stderr, Name ": Failed to set bitmapfile for %s\n", mddev); | |
863 | close(bmfd); | |
d55e3aef | 864 | if (must_close) close(mdfd); |
7ef02d01 NB |
865 | return 1; |
866 | } | |
867 | close(bmfd); | |
c82f047c | 868 | } |
7ef02d01 | 869 | |
52826846 | 870 | /* First, add the raid disks, but add the chosen one last */ |
56eedc1a | 871 | for (i=0; i<= bestcnt; i++) { |
52826846 | 872 | int j; |
56eedc1a | 873 | if (i < bestcnt) { |
52826846 NB |
874 | j = best[i]; |
875 | if (j == chosen_drive) | |
876 | continue; | |
877 | } else | |
878 | j = chosen_drive; | |
879 | ||
56eedc1a | 880 | if (j >= 0 /* && devices[j].uptodate */) { |
64c4757e NB |
881 | mdu_disk_info_t disk; |
882 | memset(&disk, 0, sizeof(disk)); | |
883 | disk.major = devices[j].major; | |
884 | disk.minor = devices[j].minor; | |
885 | if (ioctl(mdfd, ADD_NEW_DISK, &disk)!=0) { | |
682c7051 | 886 | fprintf(stderr, Name ": failed to add %s to %s: %s\n", |
64c4757e NB |
887 | devices[j].devname, |
888 | mddev, | |
889 | strerror(errno)); | |
4b1ac34b | 890 | if (i < info.array.raid_disks || i == bestcnt) |
52826846 NB |
891 | okcnt--; |
892 | else | |
893 | sparecnt--; | |
dab6685f | 894 | } else if (verbose > 0) |
52826846 NB |
895 | fprintf(stderr, Name ": added %s to %s as %d\n", |
896 | devices[j].devname, mddev, devices[j].raid_disk); | |
dab6685f | 897 | } else if (verbose > 0 && i < info.array.raid_disks) |
682c7051 | 898 | fprintf(stderr, Name ": no uptodate device for slot %d of %s\n", |
64c4757e NB |
899 | i, mddev); |
900 | } | |
52826846 | 901 | |
64c4757e | 902 | if (runstop == 1 || |
b8a8ccf9 | 903 | (runstop <= 0 && |
583315d9 NB |
904 | ( enough(info.array.level, info.array.raid_disks, |
905 | info.array.layout, clean, avail, okcnt) && | |
aa88f531 NB |
906 | (okcnt >= req_cnt || start_partial_ok) |
907 | ))) { | |
82b27616 | 908 | if (ioctl(mdfd, RUN_ARRAY, NULL)==0) { |
dab6685f NB |
909 | if (verbose >= 0) { |
910 | fprintf(stderr, Name ": %s has been started with %d drive%s", | |
911 | mddev, okcnt, okcnt==1?"":"s"); | |
b8a8ccf9 | 912 | if (okcnt < info.array.raid_disks) |
dab6685f NB |
913 | fprintf(stderr, " (out of %d)", info.array.raid_disks); |
914 | if (sparecnt) | |
915 | fprintf(stderr, " and %d spare%s", sparecnt, sparecnt==1?"":"s"); | |
916 | fprintf(stderr, ".\n"); | |
917 | } | |
589395d6 NB |
918 | if (must_close) { |
919 | int usecs = 1; | |
920 | close(mdfd); | |
921 | /* There is a nasty race with 'mdadm --monitor'. | |
922 | * If it opens this device before we close it, | |
923 | * it gets an incomplete open on which IO | |
924 | * doesn't work and the capacity if wrong. | |
925 | * If we reopen (to check for layered devices) | |
926 | * before --monitor closes, we loose. | |
927 | * | |
928 | * So: wait upto 1 second for there to be | |
929 | * a non-zero capacity. | |
930 | */ | |
931 | while (usecs < 1000) { | |
932 | mdfd = open(mddev, O_RDONLY); | |
933 | if (mdfd >= 0) { | |
934 | unsigned long size; | |
935 | if (ioctl(mdfd, BLKGETSIZE, &size) == 0 && | |
936 | size > 0) | |
937 | break; | |
938 | close(mdfd); | |
939 | } | |
940 | usleep(usecs); | |
941 | usecs <<= 1; | |
942 | } | |
943 | } | |
64c4757e | 944 | return 0; |
82b27616 | 945 | } |
682c7051 | 946 | fprintf(stderr, Name ": failed to RUN_ARRAY %s: %s\n", |
64c4757e | 947 | mddev, strerror(errno)); |
583315d9 NB |
948 | |
949 | if (!enough(info.array.level, info.array.raid_disks, | |
950 | info.array.layout, 1, avail, okcnt)) | |
951 | fprintf(stderr, Name ": Not enough devices to " | |
952 | "start the array.\n"); | |
953 | else if (!enough(info.array.level, | |
954 | info.array.raid_disks, | |
955 | info.array.layout, clean, | |
956 | avail, okcnt)) | |
957 | fprintf(stderr, Name ": Not enough devices to " | |
958 | "start the array while not clean " | |
959 | "- consider --force.\n"); | |
960 | ||
d55e3aef | 961 | if (must_close) close(mdfd); |
64c4757e NB |
962 | return 1; |
963 | } | |
82b27616 | 964 | if (runstop == -1) { |
b8a8ccf9 | 965 | fprintf(stderr, Name ": %s assembled from %d drive%s", |
52826846 | 966 | mddev, okcnt, okcnt==1?"":"s"); |
b8a8ccf9 NB |
967 | if (okcnt != info.array.raid_disks) |
968 | fprintf(stderr, " (out of %d)", info.array.raid_disks); | |
969 | fprintf(stderr, ", but not started.\n"); | |
d55e3aef | 970 | if (must_close) close(mdfd); |
64c4757e | 971 | return 0; |
82b27616 | 972 | } |
dab6685f NB |
973 | if (verbose >= 0) { |
974 | fprintf(stderr, Name ": %s assembled from %d drive%s", mddev, okcnt, okcnt==1?"":"s"); | |
975 | if (sparecnt) | |
976 | fprintf(stderr, " and %d spare%s", sparecnt, sparecnt==1?"":"s"); | |
583315d9 NB |
977 | if (!enough(info.array.level, info.array.raid_disks, |
978 | info.array.layout, 1, avail, okcnt)) | |
dab6685f | 979 | fprintf(stderr, " - not enough to start the array.\n"); |
583315d9 NB |
980 | else if (!enough(info.array.level, |
981 | info.array.raid_disks, | |
982 | info.array.layout, clean, | |
983 | avail, okcnt)) | |
984 | fprintf(stderr, " - not enough to start the " | |
985 | "array while not clean - consider " | |
986 | "--force.\n"); | |
dab6685f NB |
987 | else { |
988 | if (req_cnt == info.array.raid_disks) | |
989 | fprintf(stderr, " - need all %d to start it", req_cnt); | |
990 | else | |
991 | fprintf(stderr, " - need %d of %d to start", req_cnt, info.array.raid_disks); | |
992 | fprintf(stderr, " (use --run to insist).\n"); | |
993 | } | |
aa88f531 | 994 | } |
d55e3aef | 995 | if (must_close) close(mdfd); |
64c4757e | 996 | return 1; |
82b27616 | 997 | } else { |
52826846 NB |
998 | /* The "chosen_drive" is a good choice, and if necessary, the superblock has |
999 | * been updated to point to the current locations of devices. | |
1000 | * so we can just start the array | |
82b27616 | 1001 | */ |
cd29a5c8 | 1002 | unsigned long dev; |
0df46c2a | 1003 | dev = makedev(devices[chosen_drive].major, |
82b27616 NB |
1004 | devices[chosen_drive].minor); |
1005 | if (ioctl(mdfd, START_ARRAY, dev)) { | |
1006 | fprintf(stderr, Name ": Cannot start array: %s\n", | |
1007 | strerror(errno)); | |
1008 | } | |
1009 | ||
64c4757e | 1010 | } |
d55e3aef | 1011 | if (must_close) close(mdfd); |
e0d19036 | 1012 | return 0; |
64c4757e | 1013 | } |