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