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