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mdadm: load default sysfs attributes after assemblation
[thirdparty/mdadm.git] / mdadm.c
1 /*
2 * mdadm - manage Linux "md" devices aka RAID arrays.
3 *
4 * Copyright (C) 2001-2013 Neil Brown <neilb@suse.de>
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@suse.de>
23 *
24 * Additions for bitmap and write-behind RAID options, Copyright (C) 2003-2004,
25 * Paul Clements, SteelEye Technology, Inc.
26 */
27
28 #include "mdadm.h"
29 #include "md_p.h"
30 #include <ctype.h>
31
32 static int scan_assemble(struct supertype *ss,
33 struct context *c,
34 struct mddev_ident *ident);
35 static int misc_scan(char devmode, struct context *c);
36 static int stop_scan(int verbose);
37 static int misc_list(struct mddev_dev *devlist,
38 struct mddev_ident *ident,
39 char *dump_directory,
40 struct supertype *ss, struct context *c);
41 const char Name[] = "mdadm";
42
43 int main(int argc, char *argv[])
44 {
45 int mode = 0;
46 int opt;
47 int option_index;
48 int rv;
49 int i;
50
51 unsigned long long array_size = 0;
52 unsigned long long data_offset = INVALID_SECTORS;
53 struct mddev_ident ident;
54 char *configfile = NULL;
55 int devmode = 0;
56 int bitmap_fd = -1;
57 struct mddev_dev *devlist = NULL;
58 struct mddev_dev **devlistend = & devlist;
59 struct mddev_dev *dv;
60 mdu_array_info_t array;
61 int devs_found = 0;
62 char *symlinks = NULL;
63 int grow_continue = 0;
64 /* autof indicates whether and how to create device node.
65 * bottom 3 bits are style. Rest (when shifted) are number of parts
66 * 0 - unset
67 * 1 - don't create (no)
68 * 2 - if is_standard, then create (yes)
69 * 3 - create as 'md' - reject is_standard mdp (md)
70 * 4 - create as 'mdp' - reject is_standard md (mdp)
71 * 5 - default to md if not is_standard (md in config file)
72 * 6 - default to mdp if not is_standard (part, or mdp in config file)
73 */
74 struct context c = {
75 .require_homehost = 1,
76 };
77 struct shape s = {
78 .journaldisks = 0,
79 .level = UnSet,
80 .layout = UnSet,
81 .bitmap_chunk = UnSet,
82 .consistency_policy = CONSISTENCY_POLICY_UNKNOWN,
83 };
84
85 char sys_hostname[256];
86 char *mailaddr = NULL;
87 char *program = NULL;
88 int increments = 20;
89 int daemonise = 0;
90 char *pidfile = NULL;
91 int oneshot = 0;
92 int spare_sharing = 1;
93 struct supertype *ss = NULL;
94 enum flag_mode writemostly = FlagDefault;
95 enum flag_mode failfast = FlagDefault;
96 char *shortopt = short_options;
97 int dosyslog = 0;
98 int rebuild_map = 0;
99 char *remove_path = NULL;
100 char *udev_filename = NULL;
101 char *dump_directory = NULL;
102
103 int print_help = 0;
104 FILE *outf;
105
106 int mdfd = -1;
107 int locked = 0;
108
109 srandom(time(0) ^ getpid());
110
111 ident.uuid_set = 0;
112 ident.level = UnSet;
113 ident.raid_disks = UnSet;
114 ident.super_minor = UnSet;
115 ident.devices = 0;
116 ident.spare_group = NULL;
117 ident.autof = 0;
118 ident.st = NULL;
119 ident.bitmap_fd = -1;
120 ident.bitmap_file = NULL;
121 ident.name[0] = 0;
122 ident.container = NULL;
123 ident.member = NULL;
124
125 if (get_linux_version() < 2006015) {
126 pr_err("This version of mdadm does not support kernels older than 2.6.15\n");
127 exit(1);
128 }
129
130 while ((option_index = -1),
131 (opt = getopt_long(argc, argv, shortopt, long_options,
132 &option_index)) != -1) {
133 int newmode = mode;
134 /* firstly, some mode-independent options */
135 switch(opt) {
136 case HelpOptions:
137 print_help = 2;
138 continue;
139 case 'h':
140 print_help = 1;
141 continue;
142
143 case 'V':
144 fputs(Version, stderr);
145 exit(0);
146
147 case 'v': c.verbose++;
148 continue;
149
150 case 'q': c.verbose--;
151 continue;
152
153 case 'b':
154 if (mode == ASSEMBLE || mode == BUILD ||
155 mode == CREATE || mode == GROW ||
156 mode == INCREMENTAL || mode == MANAGE)
157 break; /* b means bitmap */
158 case Brief:
159 c.brief = 1;
160 continue;
161
162 case 'Y': c.export++;
163 continue;
164
165 case HomeHost:
166 if (strcasecmp(optarg, "<ignore>") == 0)
167 c.require_homehost = 0;
168 else
169 c.homehost = optarg;
170 continue;
171
172 case OffRootOpt:
173 /* Silently ignore old option */
174 continue;
175
176 case Prefer:
177 if (c.prefer)
178 free(c.prefer);
179 if (asprintf(&c.prefer, "/%s/", optarg) <= 0)
180 c.prefer = NULL;
181 continue;
182
183 case ':':
184 case '?':
185 fputs(Usage, stderr);
186 exit(2);
187 }
188 /* second, figure out the mode.
189 * Some options force the mode. Others
190 * set the mode if it isn't already
191 */
192
193 switch(opt) {
194 case ManageOpt:
195 newmode = MANAGE;
196 shortopt = short_bitmap_options;
197 break;
198 case 'a':
199 case Add:
200 case AddSpare:
201 case AddJournal:
202 case 'r':
203 case Remove:
204 case Replace:
205 case With:
206 case 'f':
207 case Fail:
208 case ReAdd: /* re-add */
209 case ClusterConfirm:
210 if (!mode) {
211 newmode = MANAGE;
212 shortopt = short_bitmap_options;
213 }
214 break;
215
216 case 'A': newmode = ASSEMBLE;
217 shortopt = short_bitmap_auto_options;
218 break;
219 case 'B': newmode = BUILD;
220 shortopt = short_bitmap_auto_options;
221 break;
222 case 'C': newmode = CREATE;
223 shortopt = short_bitmap_auto_options;
224 break;
225 case 'F': newmode = MONITOR;
226 break;
227 case 'G': newmode = GROW;
228 shortopt = short_bitmap_options;
229 break;
230 case 'I': newmode = INCREMENTAL;
231 shortopt = short_bitmap_auto_options;
232 break;
233 case AutoDetect:
234 newmode = AUTODETECT;
235 break;
236
237 case MiscOpt:
238 case 'D':
239 case 'E':
240 case 'X':
241 case 'Q':
242 case ExamineBB:
243 case Dump:
244 case Restore:
245 case Action:
246 newmode = MISC;
247 break;
248
249 case 'R':
250 case 'S':
251 case 'o':
252 case 'w':
253 case 'W':
254 case WaitOpt:
255 case Waitclean:
256 case DetailPlatform:
257 case KillSubarray:
258 case UpdateSubarray:
259 case UdevRules:
260 case KillOpt:
261 if (!mode)
262 newmode = MISC;
263 break;
264
265 case NoSharing:
266 newmode = MONITOR;
267 break;
268 }
269 if (mode && newmode == mode) {
270 /* everybody happy ! */
271 } else if (mode && newmode != mode) {
272 /* not allowed.. */
273 pr_err("");
274 if (option_index >= 0)
275 fprintf(stderr, "--%s", long_options[option_index].name);
276 else
277 fprintf(stderr, "-%c", opt);
278 fprintf(stderr, " would set mdadm mode to \"%s\", but it is already set to \"%s\".\n",
279 map_num(modes, newmode),
280 map_num(modes, mode));
281 exit(2);
282 } else if (!mode && newmode) {
283 mode = newmode;
284 if (mode == MISC && devs_found) {
285 pr_err("No action given for %s in --misc mode\n",
286 devlist->devname);
287 cont_err("Action options must come before device names\n");
288 exit(2);
289 }
290 } else {
291 /* special case of -c --help */
292 if ((opt == 'c' || opt == ConfigFile) &&
293 (strncmp(optarg, "--h", 3) == 0 ||
294 strncmp(optarg, "-h", 2) == 0)) {
295 fputs(Help_config, stdout);
296 exit(0);
297 }
298
299 /* If first option is a device, don't force the mode yet */
300 if (opt == 1) {
301 if (devs_found == 0) {
302 dv = xmalloc(sizeof(*dv));
303 dv->devname = optarg;
304 dv->disposition = devmode;
305 dv->writemostly = writemostly;
306 dv->failfast = failfast;
307 dv->used = 0;
308 dv->next = NULL;
309 *devlistend = dv;
310 devlistend = &dv->next;
311
312 devs_found++;
313 continue;
314 }
315 /* No mode yet, and this is the second device ... */
316 pr_err("An option must be given to set the mode before a second device\n"
317 " (%s) is listed\n", optarg);
318 exit(2);
319 }
320 if (option_index >= 0)
321 pr_err("--%s", long_options[option_index].name);
322 else
323 pr_err("-%c", opt);
324 fprintf(stderr, " does not set the mode, and so cannot be the first option.\n");
325 exit(2);
326 }
327
328 /* if we just set the mode, then done */
329 switch(opt) {
330 case ManageOpt:
331 case MiscOpt:
332 case 'A':
333 case 'B':
334 case 'C':
335 case 'F':
336 case 'G':
337 case 'I':
338 case AutoDetect:
339 continue;
340 }
341 if (opt == 1) {
342 /* an undecorated option - must be a device name.
343 */
344
345 if (devs_found > 0 && devmode == DetailPlatform) {
346 pr_err("controller may only be specified once. %s ignored\n",
347 optarg);
348 continue;
349 }
350
351 if (devs_found > 0 && mode == MANAGE && !devmode) {
352 pr_err("Must give one of -a/-r/-f for subsequent devices at %s\n", optarg);
353 exit(2);
354 }
355 if (devs_found > 0 && mode == GROW && !devmode) {
356 pr_err("Must give -a/--add for devices to add: %s\n", optarg);
357 exit(2);
358 }
359 dv = xmalloc(sizeof(*dv));
360 dv->devname = optarg;
361 dv->disposition = devmode;
362 dv->writemostly = writemostly;
363 dv->failfast = failfast;
364 dv->used = 0;
365 dv->next = NULL;
366 *devlistend = dv;
367 devlistend = &dv->next;
368
369 devs_found++;
370 continue;
371 }
372
373 /* We've got a mode, and opt is now something else which
374 * could depend on the mode */
375 #define O(a,b) ((a<<16)|b)
376 switch (O(mode,opt)) {
377 case O(GROW,'c'):
378 case O(GROW,ChunkSize):
379 case O(CREATE,'c'):
380 case O(CREATE,ChunkSize):
381 case O(BUILD,'c'): /* chunk or rounding */
382 case O(BUILD,ChunkSize): /* chunk or rounding */
383 if (s.chunk) {
384 pr_err("chunk/rounding may only be specified once. Second value is %s.\n", optarg);
385 exit(2);
386 }
387 s.chunk = parse_size(optarg);
388 if (s.chunk == INVALID_SECTORS ||
389 s.chunk < 8 || (s.chunk&1)) {
390 pr_err("invalid chunk/rounding value: %s\n",
391 optarg);
392 exit(2);
393 }
394 /* Convert sectors to K */
395 s.chunk /= 2;
396 continue;
397
398 case O(INCREMENTAL, 'e'):
399 case O(CREATE,'e'):
400 case O(ASSEMBLE,'e'):
401 case O(MISC,'e'): /* set metadata (superblock) information */
402 if (ss) {
403 pr_err("metadata information already given\n");
404 exit(2);
405 }
406 for(i = 0; !ss && superlist[i]; i++)
407 ss = superlist[i]->match_metadata_desc(optarg);
408
409 if (!ss) {
410 pr_err("unrecognised metadata identifier: %s\n", optarg);
411 exit(2);
412 }
413 continue;
414
415 case O(MANAGE,'W'):
416 case O(MANAGE,WriteMostly):
417 case O(BUILD,'W'):
418 case O(BUILD,WriteMostly):
419 case O(CREATE,'W'):
420 case O(CREATE,WriteMostly):
421 /* set write-mostly for following devices */
422 writemostly = FlagSet;
423 continue;
424
425 case O(MANAGE,'w'):
426 /* clear write-mostly for following devices */
427 writemostly = FlagClear;
428 continue;
429
430 case O(MANAGE,FailFast):
431 case O(CREATE,FailFast):
432 failfast = FlagSet;
433 continue;
434 case O(MANAGE,NoFailFast):
435 failfast = FlagClear;
436 continue;
437
438 case O(GROW,'z'):
439 case O(CREATE,'z'):
440 case O(BUILD,'z'): /* size */
441 if (s.size > 0) {
442 pr_err("size may only be specified once. Second value is %s.\n", optarg);
443 exit(2);
444 }
445 if (strcmp(optarg, "max") == 0)
446 s.size = MAX_SIZE;
447 else {
448 s.size = parse_size(optarg);
449 if (s.size == INVALID_SECTORS || s.size < 8) {
450 pr_err("invalid size: %s\n", optarg);
451 exit(2);
452 }
453 /* convert sectors to K */
454 s.size /= 2;
455 }
456 continue;
457
458 case O(GROW,'Z'): /* array size */
459 if (array_size > 0) {
460 pr_err("array-size may only be specified once. Second value is %s.\n", optarg);
461 exit(2);
462 }
463 if (strcmp(optarg, "max") == 0)
464 array_size = MAX_SIZE;
465 else {
466 array_size = parse_size(optarg);
467 if (array_size == 0 ||
468 array_size == INVALID_SECTORS) {
469 pr_err("invalid array size: %s\n",
470 optarg);
471 exit(2);
472 }
473 }
474 continue;
475
476 case O(CREATE,DataOffset):
477 case O(GROW,DataOffset):
478 if (data_offset != INVALID_SECTORS) {
479 pr_err("data-offset may only be specified one. Second value is %s.\n", optarg);
480 exit(2);
481 }
482 if (mode == CREATE && strcmp(optarg, "variable") == 0)
483 data_offset = VARIABLE_OFFSET;
484 else
485 data_offset = parse_size(optarg);
486 if (data_offset == INVALID_SECTORS) {
487 pr_err("invalid data-offset: %s\n",
488 optarg);
489 exit(2);
490 }
491 continue;
492
493 case O(GROW,'l'):
494 case O(CREATE,'l'):
495 case O(BUILD,'l'): /* set raid level*/
496 if (s.level != UnSet) {
497 pr_err("raid level may only be set once. Second value is %s.\n", optarg);
498 exit(2);
499 }
500 s.level = map_name(pers, optarg);
501 if (s.level == UnSet) {
502 pr_err("invalid raid level: %s\n",
503 optarg);
504 exit(2);
505 }
506 if (s.level != 0 && s.level != LEVEL_LINEAR &&
507 s.level != 1 && s.level != LEVEL_MULTIPATH &&
508 s.level != LEVEL_FAULTY && s.level != 10 &&
509 mode == BUILD) {
510 pr_err("Raid level %s not permitted with --build.\n",
511 optarg);
512 exit(2);
513 }
514 if (s.sparedisks > 0 && s.level < 1 && s.level >= -1) {
515 pr_err("raid level %s is incompatible with spare-devices setting.\n",
516 optarg);
517 exit(2);
518 }
519 ident.level = s.level;
520 continue;
521
522 case O(GROW, 'p'): /* new layout */
523 case O(GROW, Layout):
524 if (s.layout_str) {
525 pr_err("layout may only be sent once. Second value was %s\n", optarg);
526 exit(2);
527 }
528 s.layout_str = optarg;
529 /* 'Grow' will parse the value */
530 continue;
531
532 case O(CREATE,'p'): /* raid5 layout */
533 case O(CREATE,Layout):
534 case O(BUILD,'p'): /* faulty layout */
535 case O(BUILD,Layout):
536 if (s.layout != UnSet) {
537 pr_err("layout may only be sent once. Second value was %s\n", optarg);
538 exit(2);
539 }
540 switch(s.level) {
541 default:
542 pr_err("layout not meaningful for %s arrays.\n",
543 map_num(pers, s.level));
544 exit(2);
545 case UnSet:
546 pr_err("raid level must be given before layout.\n");
547 exit(2);
548
549 case 5:
550 s.layout = map_name(r5layout, optarg);
551 if (s.layout == UnSet) {
552 pr_err("layout %s not understood for raid5.\n",
553 optarg);
554 exit(2);
555 }
556 break;
557 case 6:
558 s.layout = map_name(r6layout, optarg);
559 if (s.layout == UnSet) {
560 pr_err("layout %s not understood for raid6.\n",
561 optarg);
562 exit(2);
563 }
564 break;
565
566 case 10:
567 s.layout = parse_layout_10(optarg);
568 if (s.layout < 0) {
569 pr_err("layout for raid10 must be 'nNN', 'oNN' or 'fNN' where NN is a number, not %s\n", optarg);
570 exit(2);
571 }
572 break;
573 case LEVEL_FAULTY:
574 /* Faulty
575 * modeNNN
576 */
577 s.layout = parse_layout_faulty(optarg);
578 if (s.layout == -1) {
579 pr_err("layout %s not understood for faulty.\n",
580 optarg);
581 exit(2);
582 }
583 break;
584 }
585 continue;
586
587 case O(CREATE,AssumeClean):
588 case O(BUILD,AssumeClean): /* assume clean */
589 case O(GROW,AssumeClean):
590 s.assume_clean = 1;
591 continue;
592
593 case O(GROW,'n'):
594 case O(CREATE,'n'):
595 case O(BUILD,'n'): /* number of raid disks */
596 if (s.raiddisks) {
597 pr_err("raid-devices set twice: %d and %s\n",
598 s.raiddisks, optarg);
599 exit(2);
600 }
601 s.raiddisks = parse_num(optarg);
602 if (s.raiddisks <= 0) {
603 pr_err("invalid number of raid devices: %s\n",
604 optarg);
605 exit(2);
606 }
607 ident.raid_disks = s.raiddisks;
608 continue;
609 case O(ASSEMBLE, Nodes):
610 case O(GROW, Nodes):
611 case O(CREATE, Nodes):
612 c.nodes = parse_num(optarg);
613 if (c.nodes < 2) {
614 pr_err("clustered array needs two nodes at least: %s\n",
615 optarg);
616 exit(2);
617 }
618 continue;
619 case O(CREATE, ClusterName):
620 case O(ASSEMBLE, ClusterName):
621 c.homecluster = optarg;
622 if (strlen(c.homecluster) > 64) {
623 pr_err("Cluster name too big.\n");
624 exit(2);
625 }
626 continue;
627 case O(CREATE,'x'): /* number of spare (eXtra) disks */
628 if (s.sparedisks) {
629 pr_err("spare-devices set twice: %d and %s\n",
630 s.sparedisks, optarg);
631 exit(2);
632 }
633 if (s.level != UnSet && s.level <= 0 && s.level >= -1) {
634 pr_err("spare-devices setting is incompatible with raid level %d\n",
635 s.level);
636 exit(2);
637 }
638 s.sparedisks = parse_num(optarg);
639 if (s.sparedisks < 0) {
640 pr_err("invalid number of spare-devices: %s\n",
641 optarg);
642 exit(2);
643 }
644 continue;
645
646 case O(CREATE,'a'):
647 case O(CREATE,Auto):
648 case O(BUILD,'a'):
649 case O(BUILD,Auto):
650 case O(INCREMENTAL,'a'):
651 case O(INCREMENTAL,Auto):
652 case O(ASSEMBLE,'a'):
653 case O(ASSEMBLE,Auto): /* auto-creation of device node */
654 c.autof = parse_auto(optarg, "--auto flag", 0);
655 continue;
656
657 case O(CREATE,Symlinks):
658 case O(BUILD,Symlinks):
659 case O(ASSEMBLE,Symlinks): /* auto creation of symlinks in /dev to /dev/md */
660 symlinks = optarg;
661 continue;
662
663 case O(BUILD,'f'): /* force honouring '-n 1' */
664 case O(BUILD,Force): /* force honouring '-n 1' */
665 case O(GROW,'f'): /* ditto */
666 case O(GROW,Force): /* ditto */
667 case O(CREATE,'f'): /* force honouring of device list */
668 case O(CREATE,Force): /* force honouring of device list */
669 case O(ASSEMBLE,'f'): /* force assembly */
670 case O(ASSEMBLE,Force): /* force assembly */
671 case O(MISC,'f'): /* force zero */
672 case O(MISC,Force): /* force zero */
673 case O(MANAGE,Force): /* add device which is too large */
674 c.force = 1;
675 continue;
676 /* now for the Assemble options */
677 case O(ASSEMBLE, FreezeReshape): /* Freeze reshape during
678 * initrd phase */
679 case O(INCREMENTAL, FreezeReshape):
680 c.freeze_reshape = 1;
681 continue;
682 case O(CREATE,'u'): /* uuid of array */
683 case O(ASSEMBLE,'u'): /* uuid of array */
684 if (ident.uuid_set) {
685 pr_err("uuid cannot be set twice. Second value %s.\n", optarg);
686 exit(2);
687 }
688 if (parse_uuid(optarg, ident.uuid))
689 ident.uuid_set = 1;
690 else {
691 pr_err("Bad uuid: %s\n", optarg);
692 exit(2);
693 }
694 continue;
695
696 case O(CREATE,'N'):
697 case O(ASSEMBLE,'N'):
698 case O(MISC,'N'):
699 if (ident.name[0]) {
700 pr_err("name cannot be set twice. Second value %s.\n", optarg);
701 exit(2);
702 }
703 if (mode == MISC && !c.subarray) {
704 pr_err("-N/--name only valid with --update-subarray in misc mode\n");
705 exit(2);
706 }
707 if (strlen(optarg) > 32) {
708 pr_err("name '%s' is too long, 32 chars max.\n",
709 optarg);
710 exit(2);
711 }
712 strcpy(ident.name, optarg);
713 continue;
714
715 case O(ASSEMBLE,'m'): /* super-minor for array */
716 case O(ASSEMBLE,SuperMinor):
717 if (ident.super_minor != UnSet) {
718 pr_err("super-minor cannot be set twice. Second value: %s.\n", optarg);
719 exit(2);
720 }
721 if (strcmp(optarg, "dev") == 0)
722 ident.super_minor = -2;
723 else {
724 ident.super_minor = parse_num(optarg);
725 if (ident.super_minor < 0) {
726 pr_err("Bad super-minor number: %s.\n", optarg);
727 exit(2);
728 }
729 }
730 continue;
731
732 case O(ASSEMBLE,'o'):
733 case O(MANAGE,'o'):
734 case O(CREATE,'o'):
735 c.readonly = 1;
736 continue;
737
738 case O(ASSEMBLE,'U'): /* update the superblock */
739 case O(MISC,'U'):
740 if (c.update) {
741 pr_err("Can only update one aspect of superblock, both %s and %s given.\n",
742 c.update, optarg);
743 exit(2);
744 }
745 if (mode == MISC && !c.subarray) {
746 pr_err("Only subarrays can be updated in misc mode\n");
747 exit(2);
748 }
749 c.update = optarg;
750 if (strcmp(c.update, "sparc2.2") == 0)
751 continue;
752 if (strcmp(c.update, "super-minor") == 0)
753 continue;
754 if (strcmp(c.update, "summaries") == 0)
755 continue;
756 if (strcmp(c.update, "resync") == 0)
757 continue;
758 if (strcmp(c.update, "uuid") == 0)
759 continue;
760 if (strcmp(c.update, "name") == 0)
761 continue;
762 if (strcmp(c.update, "homehost") == 0)
763 continue;
764 if (strcmp(c.update, "home-cluster") == 0)
765 continue;
766 if (strcmp(c.update, "nodes") == 0)
767 continue;
768 if (strcmp(c.update, "devicesize") == 0)
769 continue;
770 if (strcmp(c.update, "no-bitmap") == 0)
771 continue;
772 if (strcmp(c.update, "bbl") == 0)
773 continue;
774 if (strcmp(c.update, "no-bbl") == 0)
775 continue;
776 if (strcmp(c.update, "force-no-bbl") == 0)
777 continue;
778 if (strcmp(c.update, "ppl") == 0)
779 continue;
780 if (strcmp(c.update, "no-ppl") == 0)
781 continue;
782 if (strcmp(c.update, "metadata") == 0)
783 continue;
784 if (strcmp(c.update, "revert-reshape") == 0)
785 continue;
786 if (strcmp(c.update, "byteorder") == 0) {
787 if (ss) {
788 pr_err("must not set metadata type with --update=byteorder.\n");
789 exit(2);
790 }
791 for(i = 0; !ss && superlist[i]; i++)
792 ss = superlist[i]->match_metadata_desc(
793 "0.swap");
794 if (!ss) {
795 pr_err("INTERNAL ERROR cannot find 0.swap\n");
796 exit(2);
797 }
798
799 continue;
800 }
801 if (strcmp(c.update,"?") == 0 ||
802 strcmp(c.update, "help") == 0) {
803 outf = stdout;
804 fprintf(outf, "%s: ", Name);
805 } else {
806 outf = stderr;
807 fprintf(outf,
808 "%s: '--update=%s' is invalid. ",
809 Name, c.update);
810 }
811 fprintf(outf, "Valid --update options are:\n"
812 " 'sparc2.2', 'super-minor', 'uuid', 'name', 'nodes', 'resync',\n"
813 " 'summaries', 'homehost', 'home-cluster', 'byteorder', 'devicesize',\n"
814 " 'no-bitmap', 'metadata', 'revert-reshape'\n"
815 " 'bbl', 'no-bbl', 'force-no-bbl', 'ppl', 'no-ppl'\n"
816 );
817 exit(outf == stdout ? 0 : 2);
818
819 case O(MANAGE,'U'):
820 /* update=devicesize is allowed with --re-add */
821 if (devmode != 'A') {
822 pr_err("--update in Manage mode only allowed with --re-add.\n");
823 exit(1);
824 }
825 if (c.update) {
826 pr_err("Can only update one aspect of superblock, both %s and %s given.\n",
827 c.update, optarg);
828 exit(2);
829 }
830 c.update = optarg;
831 if (strcmp(c.update, "devicesize") != 0 &&
832 strcmp(c.update, "bbl") != 0 &&
833 strcmp(c.update, "force-no-bbl") != 0 &&
834 strcmp(c.update, "no-bbl") != 0) {
835 pr_err("only 'devicesize', 'bbl', 'no-bbl', and 'force-no-bbl' can be updated with --re-add\n");
836 exit(2);
837 }
838 continue;
839
840 case O(INCREMENTAL,NoDegraded):
841 pr_err("--no-degraded is deprecated in Incremental mode\n");
842 case O(ASSEMBLE,NoDegraded): /* --no-degraded */
843 c.runstop = -1; /* --stop isn't allowed for --assemble,
844 * so we overload slightly */
845 continue;
846
847 case O(ASSEMBLE,'c'):
848 case O(ASSEMBLE,ConfigFile):
849 case O(INCREMENTAL, 'c'):
850 case O(INCREMENTAL, ConfigFile):
851 case O(MISC, 'c'):
852 case O(MISC, ConfigFile):
853 case O(MONITOR,'c'):
854 case O(MONITOR,ConfigFile):
855 case O(CREATE,ConfigFile):
856 if (configfile) {
857 pr_err("configfile cannot be set twice. Second value is %s.\n", optarg);
858 exit(2);
859 }
860 configfile = optarg;
861 set_conffile(configfile);
862 /* FIXME possibly check that config file exists. Even parse it */
863 continue;
864 case O(ASSEMBLE,'s'): /* scan */
865 case O(MISC,'s'):
866 case O(MONITOR,'s'):
867 case O(INCREMENTAL,'s'):
868 c.scan = 1;
869 continue;
870
871 case O(MONITOR,'m'): /* mail address */
872 case O(MONITOR,EMail):
873 if (mailaddr)
874 pr_err("only specify one mailaddress. %s ignored.\n",
875 optarg);
876 else
877 mailaddr = optarg;
878 continue;
879
880 case O(MONITOR,'p'): /* alert program */
881 case O(MONITOR,ProgramOpt): /* alert program */
882 if (program)
883 pr_err("only specify one alter program. %s ignored.\n",
884 optarg);
885 else
886 program = optarg;
887 continue;
888
889 case O(MONITOR,'r'): /* rebuild increments */
890 case O(MONITOR,Increment):
891 increments = atoi(optarg);
892 if (increments > 99 || increments < 1) {
893 pr_err("please specify positive integer between 1 and 99 as rebuild increments.\n");
894 exit(2);
895 }
896 continue;
897
898 case O(MONITOR,'d'): /* delay in seconds */
899 case O(GROW, 'd'):
900 case O(BUILD,'d'): /* delay for bitmap updates */
901 case O(CREATE,'d'):
902 if (c.delay)
903 pr_err("only specify delay once. %s ignored.\n",
904 optarg);
905 else {
906 c.delay = parse_num(optarg);
907 if (c.delay < 1) {
908 pr_err("invalid delay: %s\n",
909 optarg);
910 exit(2);
911 }
912 }
913 continue;
914 case O(MONITOR,'f'): /* daemonise */
915 case O(MONITOR,Fork):
916 daemonise = 1;
917 continue;
918 case O(MONITOR,'i'): /* pid */
919 if (pidfile)
920 pr_err("only specify one pid file. %s ignored.\n",
921 optarg);
922 else
923 pidfile = optarg;
924 continue;
925 case O(MONITOR,'1'): /* oneshot */
926 oneshot = 1;
927 spare_sharing = 0;
928 continue;
929 case O(MONITOR,'t'): /* test */
930 c.test = 1;
931 continue;
932 case O(MONITOR,'y'): /* log messages to syslog */
933 openlog("mdadm", LOG_PID, SYSLOG_FACILITY);
934 dosyslog = 1;
935 continue;
936 case O(MONITOR, NoSharing):
937 spare_sharing = 0;
938 continue;
939
940 /* now the general management options. Some are applicable
941 * to other modes. None have arguments.
942 */
943 case O(GROW,'a'):
944 case O(GROW,Add):
945 case O(MANAGE,'a'):
946 case O(MANAGE,Add): /* add a drive */
947 devmode = 'a';
948 continue;
949 case O(MANAGE,AddSpare): /* add drive - never re-add */
950 devmode = 'S';
951 continue;
952 case O(MANAGE,AddJournal): /* add journal */
953 if (s.journaldisks && (s.level < 4 || s.level > 6)) {
954 pr_err("--add-journal is only supported for RAID level 4/5/6.\n");
955 exit(2);
956 }
957 devmode = 'j';
958 continue;
959 case O(MANAGE,ReAdd):
960 devmode = 'A';
961 continue;
962 case O(MANAGE,'r'): /* remove a drive */
963 case O(MANAGE,Remove):
964 devmode = 'r';
965 continue;
966 case O(MANAGE,'f'): /* set faulty */
967 case O(MANAGE,Fail):
968 case O(INCREMENTAL,'f'):
969 case O(INCREMENTAL,Remove):
970 case O(INCREMENTAL,Fail): /* r for incremental is taken, use f
971 * even though we will both fail and
972 * remove the device */
973 devmode = 'f';
974 continue;
975 case O(MANAGE, ClusterConfirm):
976 devmode = 'c';
977 continue;
978 case O(MANAGE,Replace):
979 /* Mark these devices for replacement */
980 devmode = 'R';
981 continue;
982 case O(MANAGE,With):
983 /* These are the replacements to use */
984 if (devmode != 'R') {
985 pr_err("--with must follow --replace\n");
986 exit(2);
987 }
988 devmode = 'W';
989 continue;
990 case O(INCREMENTAL,'R'):
991 case O(MANAGE,'R'):
992 case O(ASSEMBLE,'R'):
993 case O(BUILD,'R'):
994 case O(CREATE,'R'): /* Run the array */
995 if (c.runstop < 0) {
996 pr_err("Cannot both Stop and Run an array\n");
997 exit(2);
998 }
999 c.runstop = 1;
1000 continue;
1001 case O(MANAGE,'S'):
1002 if (c.runstop > 0) {
1003 pr_err("Cannot both Run and Stop an array\n");
1004 exit(2);
1005 }
1006 c.runstop = -1;
1007 continue;
1008 case O(MANAGE,'t'):
1009 c.test = 1;
1010 continue;
1011
1012 case O(MISC,'Q'):
1013 case O(MISC,'D'):
1014 case O(MISC,'E'):
1015 case O(MISC,KillOpt):
1016 case O(MISC,'R'):
1017 case O(MISC,'S'):
1018 case O(MISC,'X'):
1019 case O(MISC, ExamineBB):
1020 case O(MISC,'o'):
1021 case O(MISC,'w'):
1022 case O(MISC,'W'):
1023 case O(MISC, WaitOpt):
1024 case O(MISC, Waitclean):
1025 case O(MISC, DetailPlatform):
1026 case O(MISC, KillSubarray):
1027 case O(MISC, UpdateSubarray):
1028 case O(MISC, Dump):
1029 case O(MISC, Restore):
1030 case O(MISC ,Action):
1031 if (opt == KillSubarray || opt == UpdateSubarray) {
1032 if (c.subarray) {
1033 pr_err("subarray can only be specified once\n");
1034 exit(2);
1035 }
1036 c.subarray = optarg;
1037 }
1038 if (opt == Action) {
1039 if (c.action) {
1040 pr_err("Only one --action can be specified\n");
1041 exit(2);
1042 }
1043 if (strcmp(optarg, "idle") == 0 ||
1044 strcmp(optarg, "frozen") == 0 ||
1045 strcmp(optarg, "check") == 0 ||
1046 strcmp(optarg, "repair") == 0)
1047 c.action = optarg;
1048 else {
1049 pr_err("action must be one of idle, frozen, check, repair\n");
1050 exit(2);
1051 }
1052 }
1053 if (devmode && devmode != opt &&
1054 (devmode == 'E' ||
1055 (opt == 'E' && devmode != 'Q'))) {
1056 pr_err("--examine/-E cannot be given with ");
1057 if (devmode == 'E') {
1058 if (option_index >= 0)
1059 fprintf(stderr, "--%s\n",
1060 long_options[option_index].name);
1061 else
1062 fprintf(stderr, "-%c\n", opt);
1063 } else if (isalpha(devmode))
1064 fprintf(stderr, "-%c\n", devmode);
1065 else
1066 fprintf(stderr, "previous option\n");
1067 exit(2);
1068 }
1069 devmode = opt;
1070 if (opt == Dump || opt == Restore) {
1071 if (dump_directory != NULL) {
1072 pr_err("dump/restore directory specified twice: %s and %s\n",
1073 dump_directory, optarg);
1074 exit(2);
1075 }
1076 dump_directory = optarg;
1077 }
1078 continue;
1079 case O(MISC, UdevRules):
1080 if (devmode && devmode != opt) {
1081 pr_err("--udev-rules must be the only option.\n");
1082 } else {
1083 if (udev_filename)
1084 pr_err("only specify one udev rule filename. %s ignored.\n",
1085 optarg);
1086 else
1087 udev_filename = optarg;
1088 }
1089 devmode = opt;
1090 continue;
1091 case O(MISC,'t'):
1092 c.test = 1;
1093 continue;
1094
1095 case O(MISC, Sparc22):
1096 if (devmode != 'E') {
1097 pr_err("--sparc2.2 only allowed with --examine\n");
1098 exit(2);
1099 }
1100 c.SparcAdjust = 1;
1101 continue;
1102
1103 case O(ASSEMBLE,'b'): /* here we simply set the bitmap file */
1104 case O(ASSEMBLE,Bitmap):
1105 if (!optarg) {
1106 pr_err("bitmap file needed with -b in --assemble mode\n");
1107 exit(2);
1108 }
1109 if (strcmp(optarg, "internal") == 0 ||
1110 strcmp(optarg, "clustered") == 0) {
1111 pr_err("no need to specify --bitmap when assembling"
1112 " arrays with internal or clustered bitmap\n");
1113 continue;
1114 }
1115 bitmap_fd = open(optarg, O_RDWR);
1116 if (!*optarg || bitmap_fd < 0) {
1117 pr_err("cannot open bitmap file %s: %s\n", optarg, strerror(errno));
1118 exit(2);
1119 }
1120 ident.bitmap_fd = bitmap_fd; /* for Assemble */
1121 continue;
1122
1123 case O(ASSEMBLE, BackupFile):
1124 case O(GROW, BackupFile):
1125 /* Specify a file into which grow might place a backup,
1126 * or from which assemble might recover a backup
1127 */
1128 if (c.backup_file) {
1129 pr_err("backup file already specified, rejecting %s\n", optarg);
1130 exit(2);
1131 }
1132 c.backup_file = optarg;
1133 continue;
1134
1135 case O(GROW, Continue):
1136 /* Continue interrupted grow
1137 */
1138 grow_continue = 1;
1139 continue;
1140 case O(ASSEMBLE, InvalidBackup):
1141 /* Acknowledge that the backupfile is invalid, but ask
1142 * to continue anyway
1143 */
1144 c.invalid_backup = 1;
1145 continue;
1146
1147 case O(BUILD,'b'):
1148 case O(BUILD,Bitmap):
1149 case O(CREATE,'b'):
1150 case O(CREATE,Bitmap): /* here we create the bitmap */
1151 case O(GROW,'b'):
1152 case O(GROW,Bitmap):
1153 if (s.bitmap_file) {
1154 pr_err("bitmap cannot be set twice. Second value: %s.\n", optarg);
1155 exit(2);
1156 }
1157 if (strcmp(optarg, "internal") == 0 ||
1158 strcmp(optarg, "none") == 0 ||
1159 strchr(optarg, '/') != NULL) {
1160 s.bitmap_file = optarg;
1161 continue;
1162 }
1163 if (strcmp(optarg, "clustered") == 0) {
1164 s.bitmap_file = optarg;
1165 /* Set the default number of cluster nodes
1166 * to 4 if not already set by user
1167 */
1168 if (c.nodes < 1)
1169 c.nodes = 4;
1170 continue;
1171 }
1172 /* probable typo */
1173 pr_err("bitmap file must contain a '/', or be 'internal', or be 'clustered', or 'none'\n"
1174 " not '%s'\n", optarg);
1175 exit(2);
1176
1177 case O(GROW,BitmapChunk):
1178 case O(BUILD,BitmapChunk):
1179 case O(CREATE,BitmapChunk): /* bitmap chunksize */
1180 s.bitmap_chunk = parse_size(optarg);
1181 if (s.bitmap_chunk == 0 ||
1182 s.bitmap_chunk == INVALID_SECTORS ||
1183 s.bitmap_chunk & (s.bitmap_chunk - 1)) {
1184 pr_err("invalid bitmap chunksize: %s\n",
1185 optarg);
1186 exit(2);
1187 }
1188 s.bitmap_chunk = s.bitmap_chunk * 512;
1189 continue;
1190
1191 case O(GROW, WriteBehind):
1192 case O(BUILD, WriteBehind):
1193 case O(CREATE, WriteBehind): /* write-behind mode */
1194 s.write_behind = DEFAULT_MAX_WRITE_BEHIND;
1195 if (optarg) {
1196 s.write_behind = parse_num(optarg);
1197 if (s.write_behind < 0 ||
1198 s.write_behind > 16383) {
1199 pr_err("Invalid value for maximum outstanding write-behind writes: %s.\n\tMust be between 0 and 16383.\n", optarg);
1200 exit(2);
1201 }
1202 }
1203 continue;
1204
1205 case O(INCREMENTAL, 'r'):
1206 case O(INCREMENTAL, RebuildMapOpt):
1207 rebuild_map = 1;
1208 continue;
1209 case O(INCREMENTAL, IncrementalPath):
1210 remove_path = optarg;
1211 continue;
1212 case O(CREATE, WriteJournal):
1213 if (s.journaldisks) {
1214 pr_err("Please specify only one journal device for the array.\n");
1215 pr_err("Ignoring --write-journal %s...\n", optarg);
1216 continue;
1217 }
1218 dv = xmalloc(sizeof(*dv));
1219 dv->devname = optarg;
1220 dv->disposition = 'j'; /* WriteJournal */
1221 dv->used = 0;
1222 dv->next = NULL;
1223 *devlistend = dv;
1224 devlistend = &dv->next;
1225 devs_found++;
1226
1227 s.journaldisks = 1;
1228 continue;
1229 case O(CREATE, 'k'):
1230 case O(GROW, 'k'):
1231 s.consistency_policy = map_name(consistency_policies,
1232 optarg);
1233 if (s.consistency_policy < CONSISTENCY_POLICY_RESYNC) {
1234 pr_err("Invalid consistency policy: %s\n",
1235 optarg);
1236 exit(2);
1237 }
1238 continue;
1239 }
1240 /* We have now processed all the valid options. Anything else is
1241 * an error
1242 */
1243 if (option_index > 0)
1244 pr_err(":option --%s not valid in %s mode\n",
1245 long_options[option_index].name,
1246 map_num(modes, mode));
1247 else
1248 pr_err("option -%c not valid in %s mode\n",
1249 opt, map_num(modes, mode));
1250 exit(2);
1251
1252 }
1253
1254 if (print_help) {
1255 char *help_text;
1256 if (print_help == 2)
1257 help_text = OptionHelp;
1258 else
1259 help_text = mode_help[mode];
1260 if (help_text == NULL)
1261 help_text = Help;
1262 fputs(help_text,stdout);
1263 exit(0);
1264 }
1265
1266 if (s.journaldisks) {
1267 if (s.level < 4 || s.level > 6) {
1268 pr_err("--write-journal is only supported for RAID level 4/5/6.\n");
1269 exit(2);
1270 }
1271 if (s.consistency_policy != CONSISTENCY_POLICY_UNKNOWN &&
1272 s.consistency_policy != CONSISTENCY_POLICY_JOURNAL) {
1273 pr_err("--write-journal is not supported with consistency policy: %s\n",
1274 map_num(consistency_policies, s.consistency_policy));
1275 exit(2);
1276 }
1277 }
1278
1279 if (mode == CREATE &&
1280 s.consistency_policy != CONSISTENCY_POLICY_UNKNOWN) {
1281 if (s.level <= 0) {
1282 pr_err("--consistency-policy not meaningful with level %s.\n",
1283 map_num(pers, s.level));
1284 exit(2);
1285 } else if (s.consistency_policy == CONSISTENCY_POLICY_JOURNAL &&
1286 !s.journaldisks) {
1287 pr_err("--write-journal is required for consistency policy: %s\n",
1288 map_num(consistency_policies, s.consistency_policy));
1289 exit(2);
1290 } else if (s.consistency_policy == CONSISTENCY_POLICY_PPL &&
1291 s.level != 5) {
1292 pr_err("PPL consistency policy is only supported for RAID level 5.\n");
1293 exit(2);
1294 } else if (s.consistency_policy == CONSISTENCY_POLICY_BITMAP &&
1295 (!s.bitmap_file ||
1296 strcmp(s.bitmap_file, "none") == 0)) {
1297 pr_err("--bitmap is required for consistency policy: %s\n",
1298 map_num(consistency_policies, s.consistency_policy));
1299 exit(2);
1300 } else if (s.bitmap_file &&
1301 strcmp(s.bitmap_file, "none") != 0 &&
1302 s.consistency_policy != CONSISTENCY_POLICY_BITMAP &&
1303 s.consistency_policy != CONSISTENCY_POLICY_JOURNAL) {
1304 pr_err("--bitmap is not compatible with consistency policy: %s\n",
1305 map_num(consistency_policies, s.consistency_policy));
1306 exit(2);
1307 }
1308 }
1309
1310 if (!mode && devs_found) {
1311 mode = MISC;
1312 devmode = 'Q';
1313 if (devlist->disposition == 0)
1314 devlist->disposition = devmode;
1315 }
1316 if (!mode) {
1317 fputs(Usage, stderr);
1318 exit(2);
1319 }
1320
1321 if (symlinks) {
1322 struct createinfo *ci = conf_get_create_info();
1323
1324 if (strcasecmp(symlinks, "yes") == 0)
1325 ci->symlinks = 1;
1326 else if (strcasecmp(symlinks, "no") == 0)
1327 ci->symlinks = 0;
1328 else {
1329 pr_err("option --symlinks must be 'no' or 'yes'\n");
1330 exit(2);
1331 }
1332 }
1333 /* Ok, got the option parsing out of the way
1334 * hopefully it's mostly right but there might be some stuff
1335 * missing
1336 *
1337 * That is mostly checked in the per-mode stuff but...
1338 *
1339 * For @,B,C and A without -s, the first device listed must be
1340 * an md device. We check that here and open it.
1341 */
1342
1343 if (mode == MANAGE || mode == BUILD || mode == CREATE ||
1344 mode == GROW || (mode == ASSEMBLE && ! c.scan)) {
1345 if (devs_found < 1) {
1346 pr_err("an md device must be given in this mode\n");
1347 exit(2);
1348 }
1349 if ((int)ident.super_minor == -2 && c.autof) {
1350 pr_err("--super-minor=dev is incompatible with --auto\n");
1351 exit(2);
1352 }
1353 if (mode == MANAGE || mode == GROW) {
1354 mdfd = open_mddev(devlist->devname, 1);
1355 if (mdfd < 0)
1356 exit(1);
1357 } else
1358 /* non-existent device is OK */
1359 mdfd = open_mddev(devlist->devname, 0);
1360 if (mdfd == -2) {
1361 pr_err("device %s exists but is not an md array.\n", devlist->devname);
1362 exit(1);
1363 }
1364 if ((int)ident.super_minor == -2) {
1365 struct stat stb;
1366 if (mdfd < 0) {
1367 pr_err("--super-minor=dev given, and listed device %s doesn't exist.\n",
1368 devlist->devname);
1369 exit(1);
1370 }
1371 fstat(mdfd, &stb);
1372 ident.super_minor = minor(stb.st_rdev);
1373 }
1374 if (mdfd >= 0 && mode != MANAGE && mode != GROW) {
1375 /* We don't really want this open yet, we just might
1376 * have wanted to check some things
1377 */
1378 close(mdfd);
1379 mdfd = -1;
1380 }
1381 }
1382
1383 if (s.raiddisks) {
1384 if (s.raiddisks == 1 && !c.force && s.level != LEVEL_FAULTY) {
1385 pr_err("'1' is an unusual number of drives for an array, so it is probably\n"
1386 " a mistake. If you really mean it you will need to specify --force before\n"
1387 " setting the number of drives.\n");
1388 exit(2);
1389 }
1390 }
1391
1392 if (c.homehost == NULL && c.require_homehost)
1393 c.homehost = conf_get_homehost(&c.require_homehost);
1394 if (c.homehost == NULL || strcasecmp(c.homehost, "<system>") == 0) {
1395 if (gethostname(sys_hostname, sizeof(sys_hostname)) == 0) {
1396 sys_hostname[sizeof(sys_hostname)-1] = 0;
1397 c.homehost = sys_hostname;
1398 }
1399 }
1400 if (c.homehost &&
1401 (!c.homehost[0] || strcasecmp(c.homehost, "<none>") == 0)) {
1402 c.homehost = NULL;
1403 c.require_homehost = 0;
1404 }
1405
1406 rv = 0;
1407
1408 set_hooks(); /* set hooks from libs */
1409
1410 if (c.homecluster == NULL && (c.nodes > 0)) {
1411 c.homecluster = conf_get_homecluster();
1412 if (c.homecluster == NULL)
1413 rv = get_cluster_name(&c.homecluster);
1414 if (rv) {
1415 pr_err("The md can't get cluster name\n");
1416 exit(1);
1417 }
1418 }
1419
1420 if (c.backup_file && data_offset != INVALID_SECTORS) {
1421 pr_err("--backup-file and --data-offset are incompatible\n");
1422 exit(2);
1423 }
1424
1425 if ((mode == MISC && devmode == 'E') ||
1426 (mode == MONITOR && spare_sharing == 0))
1427 /* Anyone may try this */;
1428 else if (geteuid() != 0) {
1429 pr_err("must be super-user to perform this action\n");
1430 exit(1);
1431 }
1432
1433 ident.autof = c.autof;
1434
1435 if (c.scan && c.verbose < 2)
1436 /* --scan implied --brief unless -vv */
1437 c.brief = 1;
1438
1439 if (mode == CREATE) {
1440 if (s.bitmap_file && strcmp(s.bitmap_file, "clustered") == 0) {
1441 locked = cluster_get_dlmlock();
1442 if (locked != 1)
1443 exit(1);
1444 }
1445 } else if (mode == MANAGE || mode == GROW || mode == INCREMENTAL) {
1446 if (!md_get_array_info(mdfd, &array) && (devmode != 'c')) {
1447 if (array.state & (1 << MD_SB_CLUSTERED)) {
1448 locked = cluster_get_dlmlock();
1449 if (locked != 1)
1450 exit(1);
1451 }
1452 }
1453 }
1454
1455 switch(mode) {
1456 case MANAGE:
1457 /* readonly, add/remove, readwrite, runstop */
1458 if (c.readonly > 0)
1459 rv = Manage_ro(devlist->devname, mdfd, c.readonly);
1460 if (!rv && devs_found>1)
1461 rv = Manage_subdevs(devlist->devname, mdfd,
1462 devlist->next, c.verbose, c.test,
1463 c.update, c.force);
1464 if (!rv && c.readonly < 0)
1465 rv = Manage_ro(devlist->devname, mdfd, c.readonly);
1466 if (!rv && c.runstop > 0)
1467 rv = Manage_run(devlist->devname, mdfd, &c);
1468 if (!rv && c.runstop < 0)
1469 rv = Manage_stop(devlist->devname, mdfd, c.verbose, 0);
1470 break;
1471 case ASSEMBLE:
1472 if (devs_found == 1 && ident.uuid_set == 0 &&
1473 ident.super_minor == UnSet && ident.name[0] == 0 &&
1474 !c.scan ) {
1475 /* Only a device has been given, so get details from config file */
1476 struct mddev_ident *array_ident = conf_get_ident(devlist->devname);
1477 if (array_ident == NULL) {
1478 pr_err("%s not identified in config file.\n",
1479 devlist->devname);
1480 rv |= 1;
1481 if (mdfd >= 0)
1482 close(mdfd);
1483 } else {
1484 if (array_ident->autof == 0)
1485 array_ident->autof = c.autof;
1486 rv |= Assemble(ss, devlist->devname, array_ident,
1487 NULL, &c);
1488 }
1489 } else if (!c.scan)
1490 rv = Assemble(ss, devlist->devname, &ident,
1491 devlist->next, &c);
1492 else if (devs_found > 0) {
1493 if (c.update && devs_found > 1) {
1494 pr_err("can only update a single array at a time\n");
1495 exit(1);
1496 }
1497 if (c.backup_file && devs_found > 1) {
1498 pr_err("can only assemble a single array when providing a backup file.\n");
1499 exit(1);
1500 }
1501 for (dv = devlist; dv; dv = dv->next) {
1502 struct mddev_ident *array_ident = conf_get_ident(dv->devname);
1503 if (array_ident == NULL) {
1504 pr_err("%s not identified in config file.\n",
1505 dv->devname);
1506 rv |= 1;
1507 continue;
1508 }
1509 if (array_ident->autof == 0)
1510 array_ident->autof = c.autof;
1511 rv |= Assemble(ss, dv->devname, array_ident,
1512 NULL, &c);
1513 }
1514 } else {
1515 if (c.update) {
1516 pr_err("--update not meaningful with a --scan assembly.\n");
1517 exit(1);
1518 }
1519 if (c.backup_file) {
1520 pr_err("--backup_file not meaningful with a --scan assembly.\n");
1521 exit(1);
1522 }
1523 rv = scan_assemble(ss, &c, &ident);
1524 }
1525
1526 break;
1527 case BUILD:
1528 if (c.delay == 0)
1529 c.delay = DEFAULT_BITMAP_DELAY;
1530 if (s.write_behind && !s.bitmap_file) {
1531 pr_err("write-behind mode requires a bitmap.\n");
1532 rv = 1;
1533 break;
1534 }
1535 if (s.raiddisks == 0) {
1536 pr_err("no raid-devices specified.\n");
1537 rv = 1;
1538 break;
1539 }
1540
1541 if (s.bitmap_file) {
1542 if (strcmp(s.bitmap_file, "internal") == 0 ||
1543 strcmp(s.bitmap_file, "clustered") == 0) {
1544 pr_err("'internal' and 'clustered' bitmaps not supported with --build\n");
1545 rv |= 1;
1546 break;
1547 }
1548 }
1549 rv = Build(devlist->devname, devlist->next, &s, &c);
1550 break;
1551 case CREATE:
1552 if (c.delay == 0)
1553 c.delay = DEFAULT_BITMAP_DELAY;
1554
1555 if (c.nodes) {
1556 if (!s.bitmap_file ||
1557 strcmp(s.bitmap_file, "clustered") != 0) {
1558 pr_err("--nodes argument only compatible with --bitmap=clustered\n");
1559 rv = 1;
1560 break;
1561 }
1562
1563 if (s.level != 1 && s.level != 10) {
1564 pr_err("--bitmap=clustered is currently supported with raid1/10 only\n");
1565 rv = 1;
1566 break;
1567 }
1568 if (s.level == 10 && !(is_near_layout_10(s.layout) || s.layout == UnSet)) {
1569 pr_err("only near layout is supported with clustered raid10\n");
1570 rv = 1;
1571 break;
1572 }
1573 }
1574
1575 if (s.write_behind && !s.bitmap_file) {
1576 pr_err("write-behind mode requires a bitmap.\n");
1577 rv = 1;
1578 break;
1579 }
1580 if (s.raiddisks == 0) {
1581 pr_err("no raid-devices specified.\n");
1582 rv = 1;
1583 break;
1584 }
1585
1586 rv = Create(ss, devlist->devname,
1587 ident.name, ident.uuid_set ? ident.uuid : NULL,
1588 devs_found-1, devlist->next,
1589 &s, &c, data_offset);
1590 break;
1591 case MISC:
1592 if (devmode == 'E') {
1593 if (devlist == NULL && !c.scan) {
1594 pr_err("No devices to examine\n");
1595 exit(2);
1596 }
1597 if (devlist == NULL)
1598 devlist = conf_get_devs();
1599 if (devlist == NULL) {
1600 pr_err("No devices listed in %s\n", configfile?configfile:DefaultConfFile);
1601 exit(1);
1602 }
1603 rv = Examine(devlist, &c, ss);
1604 } else if (devmode == DetailPlatform) {
1605 rv = Detail_Platform(ss ? ss->ss : NULL, ss ? c.scan : 1,
1606 c.verbose, c.export,
1607 devlist ? devlist->devname : NULL);
1608 } else if (devlist == NULL) {
1609 if (devmode == 'S' && c.scan)
1610 rv = stop_scan(c.verbose);
1611 else if ((devmode == 'D' || devmode == Waitclean) &&
1612 c.scan)
1613 rv = misc_scan(devmode, &c);
1614 else if (devmode == UdevRules)
1615 rv = Write_rules(udev_filename);
1616 else {
1617 pr_err("No devices given.\n");
1618 exit(2);
1619 }
1620 } else
1621 rv = misc_list(devlist, &ident, dump_directory, ss, &c);
1622 break;
1623 case MONITOR:
1624 if (!devlist && !c.scan) {
1625 pr_err("Cannot monitor: need --scan or at least one device\n");
1626 rv = 1;
1627 break;
1628 }
1629 if (pidfile && !daemonise) {
1630 pr_err("Cannot write a pid file when not in daemon mode\n");
1631 rv = 1;
1632 break;
1633 }
1634 if (c.delay == 0) {
1635 if (get_linux_version() > 2006016)
1636 /* mdstat responds to poll */
1637 c.delay = 1000;
1638 else
1639 c.delay = 60;
1640 }
1641 rv = Monitor(devlist, mailaddr, program,
1642 &c, daemonise, oneshot,
1643 dosyslog, pidfile, increments,
1644 spare_sharing);
1645 break;
1646
1647 case GROW:
1648 if (array_size > 0) {
1649 /* alway impose array size first, independent of
1650 * anything else
1651 * Do not allow level or raid_disks changes at the
1652 * same time as that can be irreversibly destructive.
1653 */
1654 struct mdinfo sra;
1655 int err;
1656 if (s.raiddisks || s.level != UnSet) {
1657 pr_err("cannot change array size in same operation as changing raiddisks or level.\n"
1658 " Change size first, then check that data is still intact.\n");
1659 rv = 1;
1660 break;
1661 }
1662 if (sysfs_init(&sra, mdfd, NULL)) {
1663 rv = 1;
1664 break;
1665 }
1666 if (array_size == MAX_SIZE)
1667 err = sysfs_set_str(&sra, NULL, "array_size", "default");
1668 else
1669 err = sysfs_set_num(&sra, NULL, "array_size", array_size / 2);
1670 if (err < 0) {
1671 if (errno == E2BIG)
1672 pr_err("--array-size setting is too large.\n");
1673 else
1674 pr_err("current kernel does not support setting --array-size\n");
1675 rv = 1;
1676 break;
1677 }
1678 }
1679 if (devs_found > 1 && s.raiddisks == 0 && s.level == UnSet) {
1680 /* must be '-a'. */
1681 if (s.size > 0 || s.chunk ||
1682 s.layout_str || s.bitmap_file) {
1683 pr_err("--add cannot be used with other geometry changes in --grow mode\n");
1684 rv = 1;
1685 break;
1686 }
1687 for (dv = devlist->next; dv; dv = dv->next) {
1688 rv = Grow_Add_device(devlist->devname, mdfd,
1689 dv->devname);
1690 if (rv)
1691 break;
1692 }
1693 } else if (s.bitmap_file) {
1694 if (s.size > 0 || s.raiddisks || s.chunk ||
1695 s.layout_str || devs_found > 1) {
1696 pr_err("--bitmap changes cannot be used with other geometry changes in --grow mode\n");
1697 rv = 1;
1698 break;
1699 }
1700 if (c.delay == 0)
1701 c.delay = DEFAULT_BITMAP_DELAY;
1702 rv = Grow_addbitmap(devlist->devname, mdfd, &c, &s);
1703 } else if (grow_continue)
1704 rv = Grow_continue_command(devlist->devname,
1705 mdfd, c.backup_file,
1706 c.verbose);
1707 else if (s.size > 0 || s.raiddisks || s.layout_str ||
1708 s.chunk != 0 || s.level != UnSet ||
1709 data_offset != INVALID_SECTORS) {
1710 rv = Grow_reshape(devlist->devname, mdfd,
1711 devlist->next,
1712 data_offset, &c, &s);
1713 } else if (s.consistency_policy != CONSISTENCY_POLICY_UNKNOWN) {
1714 rv = Grow_consistency_policy(devlist->devname, mdfd, &c, &s);
1715 } else if (array_size == 0)
1716 pr_err("no changes to --grow\n");
1717 break;
1718 case INCREMENTAL:
1719 if (rebuild_map) {
1720 RebuildMap();
1721 }
1722 if (c.scan) {
1723 rv = 1;
1724 if (devlist) {
1725 pr_err("In --incremental mode, a device cannot be given with --scan.\n");
1726 break;
1727 }
1728 if (c.runstop <= 0) {
1729 pr_err("--incremental --scan meaningless without --run.\n");
1730 break;
1731 }
1732 if (devmode == 'f') {
1733 pr_err("--incremental --scan --fail not supported.\n");
1734 break;
1735 }
1736 rv = IncrementalScan(&c, NULL);
1737 }
1738 if (!devlist) {
1739 if (!rebuild_map && !c.scan) {
1740 pr_err("--incremental requires a device.\n");
1741 rv = 1;
1742 }
1743 break;
1744 }
1745 if (devmode == 'f') {
1746 if (devlist->next) {
1747 pr_err("'--incremental --fail' can only handle one device.\n");
1748 rv = 1;
1749 break;
1750 }
1751 rv = IncrementalRemove(devlist->devname, remove_path,
1752 c.verbose);
1753 } else
1754 rv = Incremental(devlist, &c, ss);
1755 break;
1756 case AUTODETECT:
1757 autodetect();
1758 break;
1759 }
1760 if (locked)
1761 cluster_release_dlmlock();
1762 if (mdfd > 0)
1763 close(mdfd);
1764 exit(rv);
1765 }
1766
1767 static int scan_assemble(struct supertype *ss,
1768 struct context *c,
1769 struct mddev_ident *ident)
1770 {
1771 struct mddev_ident *a, *array_list = conf_get_ident(NULL);
1772 struct mddev_dev *devlist = conf_get_devs();
1773 struct map_ent *map = NULL;
1774 int cnt = 0;
1775 int rv = 0;
1776 int failures, successes;
1777
1778 if (conf_verify_devnames(array_list)) {
1779 pr_err("Duplicate MD device names in conf file were found.\n");
1780 return 1;
1781 }
1782 if (devlist == NULL) {
1783 pr_err("No devices listed in conf file were found.\n");
1784 return 1;
1785 }
1786 for (a = array_list; a; a = a->next) {
1787 a->assembled = 0;
1788 if (a->autof == 0)
1789 a->autof = c->autof;
1790 }
1791 if (map_lock(&map))
1792 pr_err("failed to get exclusive lock on mapfile\n");
1793 do {
1794 failures = 0;
1795 successes = 0;
1796 rv = 0;
1797 for (a = array_list; a; a = a->next) {
1798 int r;
1799 if (a->assembled)
1800 continue;
1801 if (a->devname &&
1802 strcasecmp(a->devname, "<ignore>") == 0)
1803 continue;
1804
1805 r = Assemble(ss, a->devname,
1806 a, NULL, c);
1807 if (r == 0) {
1808 a->assembled = 1;
1809 successes++;
1810 } else
1811 failures++;
1812 rv |= r;
1813 cnt++;
1814 }
1815 } while (failures && successes);
1816 if (c->homehost && cnt == 0) {
1817 /* Maybe we can auto-assemble something.
1818 * Repeatedly call Assemble in auto-assemble mode
1819 * until it fails
1820 */
1821 int rv2;
1822 int acnt;
1823 ident->autof = c->autof;
1824 do {
1825 struct mddev_dev *devlist = conf_get_devs();
1826 acnt = 0;
1827 do {
1828 rv2 = Assemble(ss, NULL,
1829 ident,
1830 devlist, c);
1831 if (rv2 == 0) {
1832 cnt++;
1833 acnt++;
1834 }
1835 } while (rv2 != 2);
1836 /* Incase there are stacked devices, we need to go around again */
1837 } while (acnt);
1838 if (cnt == 0 && rv == 0) {
1839 pr_err("No arrays found in config file or automatically\n");
1840 rv = 1;
1841 } else if (cnt)
1842 rv = 0;
1843 } else if (cnt == 0 && rv == 0) {
1844 pr_err("No arrays found in config file\n");
1845 rv = 1;
1846 }
1847 map_unlock(&map);
1848 return rv;
1849 }
1850
1851 static int misc_scan(char devmode, struct context *c)
1852 {
1853 /* apply --detail or --wait-clean to
1854 * all devices in /proc/mdstat
1855 */
1856 struct mdstat_ent *ms = mdstat_read(0, 1);
1857 struct mdstat_ent *e;
1858 struct map_ent *map = NULL;
1859 int members;
1860 int rv = 0;
1861
1862 for (members = 0; members <= 1; members++) {
1863 for (e = ms; e; e = e->next) {
1864 char *name = NULL;
1865 struct map_ent *me;
1866 struct stat stb;
1867 int member = e->metadata_version &&
1868 strncmp(e->metadata_version,
1869 "external:/", 10) == 0;
1870 if (members != member)
1871 continue;
1872 me = map_by_devnm(&map, e->devnm);
1873 if (me && me->path && strcmp(me->path, "/unknown") != 0)
1874 name = me->path;
1875 if (name == NULL || stat(name, &stb) != 0)
1876 name = get_md_name(e->devnm);
1877
1878 if (!name) {
1879 pr_err("cannot find device file for %s\n",
1880 e->devnm);
1881 continue;
1882 }
1883 if (devmode == 'D')
1884 rv |= Detail(name, c);
1885 else
1886 rv |= WaitClean(name, c->verbose);
1887 put_md_name(name);
1888 map_free(map);
1889 map = NULL;
1890 }
1891 }
1892 free_mdstat(ms);
1893 return rv;
1894 }
1895
1896 static int stop_scan(int verbose)
1897 {
1898 /* apply --stop to all devices in /proc/mdstat */
1899 /* Due to possible stacking of devices, repeat until
1900 * nothing more can be stopped
1901 */
1902 int progress = 1, err;
1903 int last = 0;
1904 int rv = 0;
1905 do {
1906 struct mdstat_ent *ms = mdstat_read(0, 0);
1907 struct mdstat_ent *e;
1908
1909 if (!progress) last = 1;
1910 progress = 0; err = 0;
1911 for (e = ms; e; e = e->next) {
1912 char *name = get_md_name(e->devnm);
1913 int mdfd;
1914
1915 if (!name) {
1916 pr_err("cannot find device file for %s\n",
1917 e->devnm);
1918 continue;
1919 }
1920 mdfd = open_mddev(name, 1);
1921 if (mdfd >= 0) {
1922 if (Manage_stop(name, mdfd, verbose, !last))
1923 err = 1;
1924 else
1925 progress = 1;
1926 close(mdfd);
1927 }
1928
1929 put_md_name(name);
1930 }
1931 free_mdstat(ms);
1932 } while (!last && err);
1933 if (err)
1934 rv |= 1;
1935 return rv;
1936 }
1937
1938 static int misc_list(struct mddev_dev *devlist,
1939 struct mddev_ident *ident,
1940 char *dump_directory,
1941 struct supertype *ss, struct context *c)
1942 {
1943 struct mddev_dev *dv;
1944 int rv = 0;
1945
1946 for (dv = devlist; dv; dv = (rv & 16) ? NULL : dv->next) {
1947 int mdfd = -1;
1948
1949 switch(dv->disposition) {
1950 case 'D':
1951 rv |= Detail(dv->devname, c);
1952 continue;
1953 case KillOpt: /* Zero superblock */
1954 if (ss)
1955 rv |= Kill(dv->devname, ss, c->force, c->verbose,0);
1956 else {
1957 int v = c->verbose;
1958 do {
1959 rv |= Kill(dv->devname, NULL, c->force, v, 0);
1960 v = -1;
1961 } while (rv == 0);
1962 rv &= ~4;
1963 }
1964 continue;
1965 case 'Q':
1966 rv |= Query(dv->devname);
1967 continue;
1968 case 'X':
1969 rv |= ExamineBitmap(dv->devname, c->brief, ss);
1970 continue;
1971 case ExamineBB:
1972 rv |= ExamineBadblocks(dv->devname, c->brief, ss);
1973 continue;
1974 case 'W':
1975 case WaitOpt:
1976 rv |= Wait(dv->devname);
1977 continue;
1978 case Waitclean:
1979 rv |= WaitClean(dv->devname, c->verbose);
1980 continue;
1981 case KillSubarray:
1982 rv |= Kill_subarray(dv->devname, c->subarray, c->verbose);
1983 continue;
1984 case UpdateSubarray:
1985 if (c->update == NULL) {
1986 pr_err("-U/--update must be specified with --update-subarray\n");
1987 rv |= 1;
1988 continue;
1989 }
1990 rv |= Update_subarray(dv->devname, c->subarray,
1991 c->update, ident, c->verbose);
1992 continue;
1993 case Dump:
1994 rv |= Dump_metadata(dv->devname, dump_directory, c, ss);
1995 continue;
1996 case Restore:
1997 rv |= Restore_metadata(dv->devname, dump_directory, c, ss,
1998 (dv == devlist && dv->next == NULL));
1999 continue;
2000 case Action:
2001 rv |= SetAction(dv->devname, c->action);
2002 continue;
2003 }
2004
2005 if (dv->devname[0] != '/')
2006 mdfd = open_dev(dv->devname);
2007 if (dv->devname[0] == '/' || mdfd < 0)
2008 mdfd = open_mddev(dv->devname, 1);
2009
2010 if (mdfd >= 0) {
2011 switch(dv->disposition) {
2012 case 'R':
2013 c->runstop = 1;
2014 rv |= Manage_run(dv->devname, mdfd, c);
2015 break;
2016 case 'S':
2017 rv |= Manage_stop(dv->devname, mdfd, c->verbose, 0);
2018 break;
2019 case 'o':
2020 rv |= Manage_ro(dv->devname, mdfd, 1);
2021 break;
2022 case 'w':
2023 rv |= Manage_ro(dv->devname, mdfd, -1);
2024 break;
2025 }
2026 close(mdfd);
2027 } else
2028 rv |= 1;
2029 }
2030 return rv;
2031 }
2032
2033 int SetAction(char *dev, char *action)
2034 {
2035 int fd = open(dev, O_RDONLY);
2036 struct mdinfo mdi;
2037 int retval;
2038
2039 if (fd < 0) {
2040 pr_err("Couldn't open %s: %s\n", dev, strerror(errno));
2041 return 1;
2042 }
2043 retval = sysfs_init(&mdi, fd, NULL);
2044 close(fd);
2045 if (retval) {
2046 pr_err("%s is no an md array\n", dev);
2047 return 1;
2048 }
2049
2050 if (sysfs_set_str(&mdi, NULL, "sync_action", action) < 0) {
2051 pr_err("Count not set action for %s to %s: %s\n",
2052 dev, action, strerror(errno));
2053 return 1;
2054 }
2055 return 0;
2056 }
Unnamed repository; edit this file 'description' to name the repository.