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[thirdparty/mdadm.git] / mdadm.c
1 /*
2 * mdadm - manage Linux "md" devices aka RAID arrays.
3 *
4 * Copyright (C) 2001-2013 Neil Brown <neilb@suse.de>
5 *
6 *
7 * This program is free software; you can redistribute it and/or modify
8 * it under the terms of the GNU General Public License as published by
9 * the Free Software Foundation; either version 2 of the License, or
10 * (at your option) any later version.
11 *
12 * This program is distributed in the hope that it will be useful,
13 * but WITHOUT ANY WARRANTY; without even the implied warranty of
14 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
15 * GNU General Public License for more details.
16 *
17 * You should have received a copy of the GNU General Public License
18 * along with this program; if not, write to the Free Software
19 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
20 *
21 * Author: Neil Brown
22 * Email: <neilb@suse.de>
23 *
24 * Additions for bitmap and write-behind RAID options, Copyright (C) 2003-2004,
25 * Paul Clements, SteelEye Technology, Inc.
26 */
27
28 #include "mdadm.h"
29 #include "md_p.h"
30 #include <ctype.h>
31
32 static int scan_assemble(struct supertype *ss,
33 struct context *c,
34 struct mddev_ident *ident);
35 static int misc_scan(char devmode, struct context *c);
36 static int stop_scan(int verbose);
37 static int misc_list(struct mddev_dev *devlist,
38 struct mddev_ident *ident,
39 char *dump_directory,
40 struct supertype *ss, struct context *c);
41 const char Name[] = "mdadm";
42
43 int main(int argc, char *argv[])
44 {
45 int mode = 0;
46 int opt;
47 int option_index;
48 int rv;
49 int i;
50
51 unsigned long long array_size = 0;
52 unsigned long long data_offset = INVALID_SECTORS;
53 struct mddev_ident ident;
54 char *configfile = NULL;
55 int devmode = 0;
56 int bitmap_fd = -1;
57 struct mddev_dev *devlist = NULL;
58 struct mddev_dev **devlistend = & devlist;
59 struct mddev_dev *dv;
60 mdu_array_info_t array;
61 int devs_found = 0;
62 char *symlinks = NULL;
63 int grow_continue = 0;
64 /* autof indicates whether and how to create device node.
65 * bottom 3 bits are style. Rest (when shifted) are number of parts
66 * 0 - unset
67 * 1 - don't create (no)
68 * 2 - if is_standard, then create (yes)
69 * 3 - create as 'md' - reject is_standard mdp (md)
70 * 4 - create as 'mdp' - reject is_standard md (mdp)
71 * 5 - default to md if not is_standard (md in config file)
72 * 6 - default to mdp if not is_standard (part, or mdp in config file)
73 */
74 struct context c = {
75 .require_homehost = 1,
76 };
77 struct shape s = {
78 .journaldisks = 0,
79 .level = UnSet,
80 .layout = UnSet,
81 .bitmap_chunk = UnSet,
82 .consistency_policy = CONSISTENCY_POLICY_UNKNOWN,
83 };
84
85 char sys_hostname[256];
86 char *mailaddr = NULL;
87 char *program = NULL;
88 int increments = 20;
89 int daemonise = 0;
90 char *pidfile = NULL;
91 int oneshot = 0;
92 int spare_sharing = 1;
93 struct supertype *ss = NULL;
94 enum flag_mode writemostly = FlagDefault;
95 enum flag_mode failfast = FlagDefault;
96 char *shortopt = short_options;
97 int dosyslog = 0;
98 int rebuild_map = 0;
99 char *remove_path = NULL;
100 char *udev_filename = NULL;
101 char *dump_directory = NULL;
102
103 int print_help = 0;
104 FILE *outf;
105
106 int mdfd = -1;
107 int locked = 0;
108
109 srandom(time(0) ^ getpid());
110
111 ident.uuid_set = 0;
112 ident.level = UnSet;
113 ident.raid_disks = UnSet;
114 ident.super_minor = UnSet;
115 ident.devices = 0;
116 ident.spare_group = NULL;
117 ident.autof = 0;
118 ident.st = NULL;
119 ident.bitmap_fd = -1;
120 ident.bitmap_file = NULL;
121 ident.name[0] = 0;
122 ident.container = NULL;
123 ident.member = NULL;
124
125 if (get_linux_version() < 2006015) {
126 pr_err("This version of mdadm does not support kernels older than 2.6.15\n");
127 exit(1);
128 }
129
130 while ((option_index = -1),
131 (opt = getopt_long(argc, argv, shortopt, long_options,
132 &option_index)) != -1) {
133 int newmode = mode;
134 /* firstly, some mode-independent options */
135 switch(opt) {
136 case HelpOptions:
137 print_help = 2;
138 continue;
139 case 'h':
140 print_help = 1;
141 continue;
142
143 case 'V':
144 fputs(Version, stderr);
145 exit(0);
146
147 case 'v': c.verbose++;
148 continue;
149
150 case 'q': c.verbose--;
151 continue;
152
153 case 'b':
154 if (mode == ASSEMBLE || mode == BUILD ||
155 mode == CREATE || mode == GROW ||
156 mode == INCREMENTAL || mode == MANAGE)
157 break; /* b means bitmap */
158 case Brief:
159 c.brief = 1;
160 continue;
161
162 case NoDevices:
163 c.no_devices = 1;
164 continue;
165
166 case 'Y': c.export++;
167 continue;
168
169 case HomeHost:
170 if (strcasecmp(optarg, "<ignore>") == 0)
171 c.require_homehost = 0;
172 else
173 c.homehost = optarg;
174 continue;
175
176 case OffRootOpt:
177 /* Silently ignore old option */
178 continue;
179
180 case Prefer:
181 if (c.prefer)
182 free(c.prefer);
183 if (asprintf(&c.prefer, "/%s/", optarg) <= 0)
184 c.prefer = NULL;
185 continue;
186
187 case ':':
188 case '?':
189 fputs(Usage, stderr);
190 exit(2);
191 }
192 /* second, figure out the mode.
193 * Some options force the mode. Others
194 * set the mode if it isn't already
195 */
196
197 switch(opt) {
198 case ManageOpt:
199 newmode = MANAGE;
200 shortopt = short_bitmap_options;
201 break;
202 case 'a':
203 case Add:
204 case AddSpare:
205 case AddJournal:
206 case 'r':
207 case Remove:
208 case Replace:
209 case With:
210 case 'f':
211 case Fail:
212 case ReAdd: /* re-add */
213 case ClusterConfirm:
214 if (!mode) {
215 newmode = MANAGE;
216 shortopt = short_bitmap_options;
217 }
218 break;
219
220 case 'A': newmode = ASSEMBLE;
221 shortopt = short_bitmap_auto_options;
222 break;
223 case 'B': newmode = BUILD;
224 shortopt = short_bitmap_auto_options;
225 break;
226 case 'C': newmode = CREATE;
227 shortopt = short_bitmap_auto_options;
228 break;
229 case 'F': newmode = MONITOR;
230 break;
231 case 'G': newmode = GROW;
232 shortopt = short_bitmap_options;
233 break;
234 case 'I': newmode = INCREMENTAL;
235 shortopt = short_bitmap_auto_options;
236 break;
237 case AutoDetect:
238 newmode = AUTODETECT;
239 break;
240
241 case MiscOpt:
242 case 'D':
243 case 'E':
244 case 'X':
245 case 'Q':
246 case ExamineBB:
247 case Dump:
248 case Restore:
249 case Action:
250 newmode = MISC;
251 break;
252
253 case 'R':
254 case 'S':
255 case 'o':
256 case 'w':
257 case 'W':
258 case WaitOpt:
259 case Waitclean:
260 case DetailPlatform:
261 case KillSubarray:
262 case UpdateSubarray:
263 case UdevRules:
264 case KillOpt:
265 if (!mode)
266 newmode = MISC;
267 break;
268
269 case NoSharing:
270 newmode = MONITOR;
271 break;
272 }
273 if (mode && newmode == mode) {
274 /* everybody happy ! */
275 } else if (mode && newmode != mode) {
276 /* not allowed.. */
277 pr_err("");
278 if (option_index >= 0)
279 fprintf(stderr, "--%s", long_options[option_index].name);
280 else
281 fprintf(stderr, "-%c", opt);
282 fprintf(stderr, " would set mdadm mode to \"%s\", but it is already set to \"%s\".\n",
283 map_num(modes, newmode),
284 map_num(modes, mode));
285 exit(2);
286 } else if (!mode && newmode) {
287 mode = newmode;
288 if (mode == MISC && devs_found) {
289 pr_err("No action given for %s in --misc mode\n",
290 devlist->devname);
291 cont_err("Action options must come before device names\n");
292 exit(2);
293 }
294 } else {
295 /* special case of -c --help */
296 if ((opt == 'c' || opt == ConfigFile) &&
297 (strncmp(optarg, "--h", 3) == 0 ||
298 strncmp(optarg, "-h", 2) == 0)) {
299 fputs(Help_config, stdout);
300 exit(0);
301 }
302
303 /* If first option is a device, don't force the mode yet */
304 if (opt == 1) {
305 if (devs_found == 0) {
306 dv = xmalloc(sizeof(*dv));
307 dv->devname = optarg;
308 dv->disposition = devmode;
309 dv->writemostly = writemostly;
310 dv->failfast = failfast;
311 dv->used = 0;
312 dv->next = NULL;
313 *devlistend = dv;
314 devlistend = &dv->next;
315
316 devs_found++;
317 continue;
318 }
319 /* No mode yet, and this is the second device ... */
320 pr_err("An option must be given to set the mode before a second device\n"
321 " (%s) is listed\n", optarg);
322 exit(2);
323 }
324 if (option_index >= 0)
325 pr_err("--%s", long_options[option_index].name);
326 else
327 pr_err("-%c", opt);
328 fprintf(stderr, " does not set the mode, and so cannot be the first option.\n");
329 exit(2);
330 }
331
332 /* if we just set the mode, then done */
333 switch(opt) {
334 case ManageOpt:
335 case MiscOpt:
336 case 'A':
337 case 'B':
338 case 'C':
339 case 'F':
340 case 'G':
341 case 'I':
342 case AutoDetect:
343 continue;
344 }
345 if (opt == 1) {
346 /* an undecorated option - must be a device name.
347 */
348
349 if (devs_found > 0 && devmode == DetailPlatform) {
350 pr_err("controller may only be specified once. %s ignored\n",
351 optarg);
352 continue;
353 }
354
355 if (devs_found > 0 && mode == MANAGE && !devmode) {
356 pr_err("Must give one of -a/-r/-f for subsequent devices at %s\n", optarg);
357 exit(2);
358 }
359 if (devs_found > 0 && mode == GROW && !devmode) {
360 pr_err("Must give -a/--add for devices to add: %s\n", optarg);
361 exit(2);
362 }
363 dv = xmalloc(sizeof(*dv));
364 dv->devname = optarg;
365 dv->disposition = devmode;
366 dv->writemostly = writemostly;
367 dv->failfast = failfast;
368 dv->used = 0;
369 dv->next = NULL;
370 *devlistend = dv;
371 devlistend = &dv->next;
372
373 devs_found++;
374 continue;
375 }
376
377 /* We've got a mode, and opt is now something else which
378 * could depend on the mode */
379 #define O(a,b) ((a<<16)|b)
380 switch (O(mode,opt)) {
381 case O(GROW,'c'):
382 case O(GROW,ChunkSize):
383 case O(CREATE,'c'):
384 case O(CREATE,ChunkSize):
385 case O(BUILD,'c'): /* chunk or rounding */
386 case O(BUILD,ChunkSize): /* chunk or rounding */
387 if (s.chunk) {
388 pr_err("chunk/rounding may only be specified once. Second value is %s.\n", optarg);
389 exit(2);
390 }
391 s.chunk = parse_size(optarg);
392 if (s.chunk == INVALID_SECTORS ||
393 s.chunk < 8 || (s.chunk&1)) {
394 pr_err("invalid chunk/rounding value: %s\n",
395 optarg);
396 exit(2);
397 }
398 /* Convert sectors to K */
399 s.chunk /= 2;
400 continue;
401
402 case O(INCREMENTAL, 'e'):
403 case O(CREATE,'e'):
404 case O(ASSEMBLE,'e'):
405 case O(MISC,'e'): /* set metadata (superblock) information */
406 if (ss) {
407 pr_err("metadata information already given\n");
408 exit(2);
409 }
410 for(i = 0; !ss && superlist[i]; i++)
411 ss = superlist[i]->match_metadata_desc(optarg);
412
413 if (!ss) {
414 pr_err("unrecognised metadata identifier: %s\n", optarg);
415 exit(2);
416 }
417 continue;
418
419 case O(MANAGE,'W'):
420 case O(MANAGE,WriteMostly):
421 case O(BUILD,'W'):
422 case O(BUILD,WriteMostly):
423 case O(CREATE,'W'):
424 case O(CREATE,WriteMostly):
425 /* set write-mostly for following devices */
426 writemostly = FlagSet;
427 continue;
428
429 case O(MANAGE,'w'):
430 /* clear write-mostly for following devices */
431 writemostly = FlagClear;
432 continue;
433
434 case O(MANAGE,FailFast):
435 case O(CREATE,FailFast):
436 failfast = FlagSet;
437 continue;
438 case O(MANAGE,NoFailFast):
439 failfast = FlagClear;
440 continue;
441
442 case O(GROW,'z'):
443 case O(CREATE,'z'):
444 case O(BUILD,'z'): /* size */
445 if (s.size > 0) {
446 pr_err("size may only be specified once. Second value is %s.\n", optarg);
447 exit(2);
448 }
449 if (strcmp(optarg, "max") == 0)
450 s.size = MAX_SIZE;
451 else {
452 s.size = parse_size(optarg);
453 if (s.size == INVALID_SECTORS || s.size < 8) {
454 pr_err("invalid size: %s\n", optarg);
455 exit(2);
456 }
457 /* convert sectors to K */
458 s.size /= 2;
459 }
460 continue;
461
462 case O(GROW,'Z'): /* array size */
463 if (array_size > 0) {
464 pr_err("array-size may only be specified once. Second value is %s.\n", optarg);
465 exit(2);
466 }
467 if (strcmp(optarg, "max") == 0)
468 array_size = MAX_SIZE;
469 else {
470 array_size = parse_size(optarg);
471 if (array_size == 0 ||
472 array_size == INVALID_SECTORS) {
473 pr_err("invalid array size: %s\n",
474 optarg);
475 exit(2);
476 }
477 }
478 continue;
479
480 case O(CREATE,DataOffset):
481 case O(GROW,DataOffset):
482 if (data_offset != INVALID_SECTORS) {
483 pr_err("data-offset may only be specified one. Second value is %s.\n", optarg);
484 exit(2);
485 }
486 if (mode == CREATE && strcmp(optarg, "variable") == 0)
487 data_offset = VARIABLE_OFFSET;
488 else
489 data_offset = parse_size(optarg);
490 if (data_offset == INVALID_SECTORS) {
491 pr_err("invalid data-offset: %s\n",
492 optarg);
493 exit(2);
494 }
495 continue;
496
497 case O(GROW,'l'):
498 case O(CREATE,'l'):
499 case O(BUILD,'l'): /* set raid level*/
500 if (s.level != UnSet) {
501 pr_err("raid level may only be set once. Second value is %s.\n", optarg);
502 exit(2);
503 }
504 s.level = map_name(pers, optarg);
505 if (s.level == UnSet) {
506 pr_err("invalid raid level: %s\n",
507 optarg);
508 exit(2);
509 }
510 if (s.level != 0 && s.level != LEVEL_LINEAR &&
511 s.level != 1 && s.level != LEVEL_MULTIPATH &&
512 s.level != LEVEL_FAULTY && s.level != 10 &&
513 mode == BUILD) {
514 pr_err("Raid level %s not permitted with --build.\n",
515 optarg);
516 exit(2);
517 }
518 if (s.sparedisks > 0 && s.level < 1 && s.level >= -1) {
519 pr_err("raid level %s is incompatible with spare-devices setting.\n",
520 optarg);
521 exit(2);
522 }
523 ident.level = s.level;
524 continue;
525
526 case O(GROW, 'p'): /* new layout */
527 case O(GROW, Layout):
528 if (s.layout_str) {
529 pr_err("layout may only be sent once. Second value was %s\n", optarg);
530 exit(2);
531 }
532 s.layout_str = optarg;
533 /* 'Grow' will parse the value */
534 continue;
535
536 case O(CREATE,'p'): /* raid5 layout */
537 case O(CREATE,Layout):
538 case O(BUILD,'p'): /* faulty layout */
539 case O(BUILD,Layout):
540 if (s.layout != UnSet) {
541 pr_err("layout may only be sent once. Second value was %s\n", optarg);
542 exit(2);
543 }
544 switch(s.level) {
545 default:
546 pr_err("layout not meaningful for %s arrays.\n",
547 map_num(pers, s.level));
548 exit(2);
549 case UnSet:
550 pr_err("raid level must be given before layout.\n");
551 exit(2);
552
553 case 0:
554 s.layout = map_name(r0layout, optarg);
555 if (s.layout == UnSet) {
556 pr_err("layout %s not understood for raid0.\n",
557 optarg);
558 exit(2);
559 }
560 break;
561 case 5:
562 s.layout = map_name(r5layout, optarg);
563 if (s.layout == UnSet) {
564 pr_err("layout %s not understood for raid5.\n",
565 optarg);
566 exit(2);
567 }
568 break;
569 case 6:
570 s.layout = map_name(r6layout, optarg);
571 if (s.layout == UnSet) {
572 pr_err("layout %s not understood for raid6.\n",
573 optarg);
574 exit(2);
575 }
576 break;
577
578 case 10:
579 s.layout = parse_layout_10(optarg);
580 if (s.layout < 0) {
581 pr_err("layout for raid10 must be 'nNN', 'oNN' or 'fNN' where NN is a number, not %s\n", optarg);
582 exit(2);
583 }
584 break;
585 case LEVEL_FAULTY:
586 /* Faulty
587 * modeNNN
588 */
589 s.layout = parse_layout_faulty(optarg);
590 if (s.layout == -1) {
591 pr_err("layout %s not understood for faulty.\n",
592 optarg);
593 exit(2);
594 }
595 break;
596 }
597 continue;
598
599 case O(CREATE,AssumeClean):
600 case O(BUILD,AssumeClean): /* assume clean */
601 case O(GROW,AssumeClean):
602 s.assume_clean = 1;
603 continue;
604
605 case O(GROW,'n'):
606 case O(CREATE,'n'):
607 case O(BUILD,'n'): /* number of raid disks */
608 if (s.raiddisks) {
609 pr_err("raid-devices set twice: %d and %s\n",
610 s.raiddisks, optarg);
611 exit(2);
612 }
613 if (parse_num(&s.raiddisks, optarg) != 0 || s.raiddisks <= 0) {
614 pr_err("invalid number of raid devices: %s\n",
615 optarg);
616 exit(2);
617 }
618 ident.raid_disks = s.raiddisks;
619 continue;
620 case O(ASSEMBLE, Nodes):
621 case O(GROW, Nodes):
622 case O(CREATE, Nodes):
623 if (parse_num(&c.nodes, optarg) != 0 || c.nodes < 2) {
624 pr_err("clustered array needs two nodes at least: %s\n",
625 optarg);
626 exit(2);
627 }
628 continue;
629 case O(CREATE, ClusterName):
630 case O(ASSEMBLE, ClusterName):
631 c.homecluster = optarg;
632 if (strlen(c.homecluster) > 64) {
633 pr_err("Cluster name too big.\n");
634 exit(2);
635 }
636 continue;
637 case O(CREATE,'x'): /* number of spare (eXtra) disks */
638 if (s.sparedisks) {
639 pr_err("spare-devices set twice: %d and %s\n",
640 s.sparedisks, optarg);
641 exit(2);
642 }
643 if (s.level != UnSet && s.level <= 0 && s.level >= -1) {
644 pr_err("spare-devices setting is incompatible with raid level %d\n",
645 s.level);
646 exit(2);
647 }
648 if (parse_num(&s.sparedisks, optarg) != 0 || s.sparedisks < 0) {
649 pr_err("invalid number of spare-devices: %s\n",
650 optarg);
651 exit(2);
652 }
653 continue;
654
655 case O(CREATE,'a'):
656 case O(CREATE,Auto):
657 case O(BUILD,'a'):
658 case O(BUILD,Auto):
659 case O(INCREMENTAL,'a'):
660 case O(INCREMENTAL,Auto):
661 case O(ASSEMBLE,'a'):
662 case O(ASSEMBLE,Auto): /* auto-creation of device node */
663 c.autof = parse_auto(optarg, "--auto flag", 0);
664 continue;
665
666 case O(CREATE,Symlinks):
667 case O(BUILD,Symlinks):
668 case O(ASSEMBLE,Symlinks): /* auto creation of symlinks in /dev to /dev/md */
669 symlinks = optarg;
670 continue;
671
672 case O(BUILD,'f'): /* force honouring '-n 1' */
673 case O(BUILD,Force): /* force honouring '-n 1' */
674 case O(GROW,'f'): /* ditto */
675 case O(GROW,Force): /* ditto */
676 case O(CREATE,'f'): /* force honouring of device list */
677 case O(CREATE,Force): /* force honouring of device list */
678 case O(ASSEMBLE,'f'): /* force assembly */
679 case O(ASSEMBLE,Force): /* force assembly */
680 case O(MISC,'f'): /* force zero */
681 case O(MISC,Force): /* force zero */
682 case O(MANAGE,Force): /* add device which is too large */
683 c.force = 1;
684 continue;
685 /* now for the Assemble options */
686 case O(ASSEMBLE, FreezeReshape): /* Freeze reshape during
687 * initrd phase */
688 case O(INCREMENTAL, FreezeReshape):
689 c.freeze_reshape = 1;
690 continue;
691 case O(CREATE,'u'): /* uuid of array */
692 case O(ASSEMBLE,'u'): /* uuid of array */
693 if (ident.uuid_set) {
694 pr_err("uuid cannot be set twice. Second value %s.\n", optarg);
695 exit(2);
696 }
697 if (parse_uuid(optarg, ident.uuid))
698 ident.uuid_set = 1;
699 else {
700 pr_err("Bad uuid: %s\n", optarg);
701 exit(2);
702 }
703 continue;
704
705 case O(CREATE,'N'):
706 case O(ASSEMBLE,'N'):
707 case O(MISC,'N'):
708 if (ident.name[0]) {
709 pr_err("name cannot be set twice. Second value %s.\n", optarg);
710 exit(2);
711 }
712 if (mode == MISC && !c.subarray) {
713 pr_err("-N/--name only valid with --update-subarray in misc mode\n");
714 exit(2);
715 }
716 if (strlen(optarg) > 32) {
717 pr_err("name '%s' is too long, 32 chars max.\n",
718 optarg);
719 exit(2);
720 }
721 strcpy(ident.name, optarg);
722 continue;
723
724 case O(ASSEMBLE,'m'): /* super-minor for array */
725 case O(ASSEMBLE,SuperMinor):
726 if (ident.super_minor != UnSet) {
727 pr_err("super-minor cannot be set twice. Second value: %s.\n", optarg);
728 exit(2);
729 }
730 if (strcmp(optarg, "dev") == 0)
731 ident.super_minor = -2;
732 else if (parse_num(&ident.super_minor, optarg) != 0 || ident.super_minor < 0) {
733 pr_err("Bad super-minor number: %s.\n", optarg);
734 exit(2);
735 }
736 continue;
737
738 case O(ASSEMBLE,'o'):
739 case O(MANAGE,'o'):
740 case O(CREATE,'o'):
741 c.readonly = 1;
742 continue;
743
744 case O(ASSEMBLE,'U'): /* update the superblock */
745 case O(MISC,'U'):
746 if (c.update) {
747 pr_err("Can only update one aspect of superblock, both %s and %s given.\n",
748 c.update, optarg);
749 exit(2);
750 }
751 if (mode == MISC && !c.subarray) {
752 pr_err("Only subarrays can be updated in misc mode\n");
753 exit(2);
754 }
755 c.update = optarg;
756 if (strcmp(c.update, "sparc2.2") == 0)
757 continue;
758 if (strcmp(c.update, "super-minor") == 0)
759 continue;
760 if (strcmp(c.update, "summaries") == 0)
761 continue;
762 if (strcmp(c.update, "resync") == 0)
763 continue;
764 if (strcmp(c.update, "uuid") == 0)
765 continue;
766 if (strcmp(c.update, "name") == 0)
767 continue;
768 if (strcmp(c.update, "homehost") == 0)
769 continue;
770 if (strcmp(c.update, "home-cluster") == 0)
771 continue;
772 if (strcmp(c.update, "nodes") == 0)
773 continue;
774 if (strcmp(c.update, "devicesize") == 0)
775 continue;
776 if (strcmp(c.update, "bitmap") == 0)
777 continue;
778 if (strcmp(c.update, "no-bitmap") == 0)
779 continue;
780 if (strcmp(c.update, "bbl") == 0)
781 continue;
782 if (strcmp(c.update, "no-bbl") == 0)
783 continue;
784 if (strcmp(c.update, "force-no-bbl") == 0)
785 continue;
786 if (strcmp(c.update, "ppl") == 0)
787 continue;
788 if (strcmp(c.update, "no-ppl") == 0)
789 continue;
790 if (strcmp(c.update, "metadata") == 0)
791 continue;
792 if (strcmp(c.update, "revert-reshape") == 0)
793 continue;
794 if (strcmp(c.update, "layout-original") == 0 ||
795 strcmp(c.update, "layout-alternate") == 0 ||
796 strcmp(c.update, "layout-unspecified") == 0)
797 continue;
798 if (strcmp(c.update, "byteorder") == 0) {
799 if (ss) {
800 pr_err("must not set metadata type with --update=byteorder.\n");
801 exit(2);
802 }
803 for(i = 0; !ss && superlist[i]; i++)
804 ss = superlist[i]->match_metadata_desc(
805 "0.swap");
806 if (!ss) {
807 pr_err("INTERNAL ERROR cannot find 0.swap\n");
808 exit(2);
809 }
810
811 continue;
812 }
813 if (strcmp(c.update,"?") == 0 ||
814 strcmp(c.update, "help") == 0) {
815 outf = stdout;
816 fprintf(outf, "%s: ", Name);
817 } else {
818 outf = stderr;
819 fprintf(outf,
820 "%s: '--update=%s' is invalid. ",
821 Name, c.update);
822 }
823 fprintf(outf, "Valid --update options are:\n"
824 " 'sparc2.2', 'super-minor', 'uuid', 'name', 'nodes', 'resync',\n"
825 " 'summaries', 'homehost', 'home-cluster', 'byteorder', 'devicesize',\n"
826 " 'bitmap', 'no-bitmap', 'metadata', 'revert-reshape'\n"
827 " 'bbl', 'no-bbl', 'force-no-bbl', 'ppl', 'no-ppl'\n"
828 " 'layout-original', 'layout-alternate', 'layout-unspecified'\n"
829 );
830 exit(outf == stdout ? 0 : 2);
831
832 case O(MANAGE,'U'):
833 /* update=devicesize is allowed with --re-add */
834 if (devmode != 'A') {
835 pr_err("--update in Manage mode only allowed with --re-add.\n");
836 exit(1);
837 }
838 if (c.update) {
839 pr_err("Can only update one aspect of superblock, both %s and %s given.\n",
840 c.update, optarg);
841 exit(2);
842 }
843 c.update = optarg;
844 if (strcmp(c.update, "devicesize") != 0 &&
845 strcmp(c.update, "bbl") != 0 &&
846 strcmp(c.update, "force-no-bbl") != 0 &&
847 strcmp(c.update, "no-bbl") != 0) {
848 pr_err("only 'devicesize', 'bbl', 'no-bbl', and 'force-no-bbl' can be updated with --re-add\n");
849 exit(2);
850 }
851 continue;
852
853 case O(INCREMENTAL,NoDegraded):
854 pr_err("--no-degraded is deprecated in Incremental mode\n");
855 case O(ASSEMBLE,NoDegraded): /* --no-degraded */
856 c.runstop = -1; /* --stop isn't allowed for --assemble,
857 * so we overload slightly */
858 continue;
859
860 case O(ASSEMBLE,'c'):
861 case O(ASSEMBLE,ConfigFile):
862 case O(INCREMENTAL, 'c'):
863 case O(INCREMENTAL, ConfigFile):
864 case O(MISC, 'c'):
865 case O(MISC, ConfigFile):
866 case O(MONITOR,'c'):
867 case O(MONITOR,ConfigFile):
868 case O(CREATE,ConfigFile):
869 if (configfile) {
870 pr_err("configfile cannot be set twice. Second value is %s.\n", optarg);
871 exit(2);
872 }
873 configfile = optarg;
874 set_conffile(configfile);
875 /* FIXME possibly check that config file exists. Even parse it */
876 continue;
877 case O(ASSEMBLE,'s'): /* scan */
878 case O(MISC,'s'):
879 case O(MONITOR,'s'):
880 case O(INCREMENTAL,'s'):
881 c.scan = 1;
882 continue;
883
884 case O(MONITOR,'m'): /* mail address */
885 case O(MONITOR,EMail):
886 if (mailaddr)
887 pr_err("only specify one mailaddress. %s ignored.\n",
888 optarg);
889 else
890 mailaddr = optarg;
891 continue;
892
893 case O(MONITOR,'p'): /* alert program */
894 case O(MONITOR,ProgramOpt): /* alert program */
895 if (program)
896 pr_err("only specify one alter program. %s ignored.\n",
897 optarg);
898 else
899 program = optarg;
900 continue;
901
902 case O(MONITOR,'r'): /* rebuild increments */
903 case O(MONITOR,Increment):
904 if (parse_num(&increments, optarg) != 0
905 || increments > 99 || increments < 1) {
906 pr_err("please specify positive integer between 1 and 99 as rebuild increments.\n");
907 exit(2);
908 }
909 continue;
910
911 case O(MONITOR,'d'): /* delay in seconds */
912 case O(GROW, 'd'):
913 case O(BUILD,'d'): /* delay for bitmap updates */
914 case O(CREATE,'d'):
915 if (c.delay)
916 pr_err("only specify delay once. %s ignored.\n", optarg);
917 else if (parse_num(&c.delay, optarg) != 0 || c.delay < 1) {
918 pr_err("invalid delay: %s\n", optarg);
919 exit(2);
920 }
921 continue;
922 case O(MONITOR,'f'): /* daemonise */
923 case O(MONITOR,Fork):
924 daemonise = 1;
925 continue;
926 case O(MONITOR,'i'): /* pid */
927 if (pidfile)
928 pr_err("only specify one pid file. %s ignored.\n",
929 optarg);
930 else
931 pidfile = optarg;
932 continue;
933 case O(MONITOR,'1'): /* oneshot */
934 oneshot = 1;
935 spare_sharing = 0;
936 continue;
937 case O(MONITOR,'t'): /* test */
938 c.test = 1;
939 continue;
940 case O(MONITOR,'y'): /* log messages to syslog */
941 openlog("mdadm", LOG_PID, SYSLOG_FACILITY);
942 dosyslog = 1;
943 continue;
944 case O(MONITOR, NoSharing):
945 spare_sharing = 0;
946 continue;
947
948 /* now the general management options. Some are applicable
949 * to other modes. None have arguments.
950 */
951 case O(GROW,'a'):
952 case O(GROW,Add):
953 case O(MANAGE,'a'):
954 case O(MANAGE,Add): /* add a drive */
955 devmode = 'a';
956 continue;
957 case O(MANAGE,AddSpare): /* add drive - never re-add */
958 devmode = 'S';
959 continue;
960 case O(MANAGE,AddJournal): /* add journal */
961 if (s.journaldisks && (s.level < 4 || s.level > 6)) {
962 pr_err("--add-journal is only supported for RAID level 4/5/6.\n");
963 exit(2);
964 }
965 devmode = 'j';
966 continue;
967 case O(MANAGE,ReAdd):
968 devmode = 'A';
969 continue;
970 case O(MANAGE,'r'): /* remove a drive */
971 case O(MANAGE,Remove):
972 devmode = 'r';
973 continue;
974 case O(MANAGE,'f'): /* set faulty */
975 case O(MANAGE,Fail):
976 case O(INCREMENTAL,'f'):
977 case O(INCREMENTAL,Remove):
978 case O(INCREMENTAL,Fail): /* r for incremental is taken, use f
979 * even though we will both fail and
980 * remove the device */
981 devmode = 'f';
982 continue;
983 case O(MANAGE, ClusterConfirm):
984 devmode = 'c';
985 continue;
986 case O(MANAGE,Replace):
987 /* Mark these devices for replacement */
988 devmode = 'R';
989 continue;
990 case O(MANAGE,With):
991 /* These are the replacements to use */
992 if (devmode != 'R') {
993 pr_err("--with must follow --replace\n");
994 exit(2);
995 }
996 devmode = 'W';
997 continue;
998 case O(INCREMENTAL,'R'):
999 case O(MANAGE,'R'):
1000 case O(ASSEMBLE,'R'):
1001 case O(BUILD,'R'):
1002 case O(CREATE,'R'): /* Run the array */
1003 if (c.runstop < 0) {
1004 pr_err("Cannot both Stop and Run an array\n");
1005 exit(2);
1006 }
1007 c.runstop = 1;
1008 continue;
1009 case O(MANAGE,'S'):
1010 if (c.runstop > 0) {
1011 pr_err("Cannot both Run and Stop an array\n");
1012 exit(2);
1013 }
1014 c.runstop = -1;
1015 continue;
1016 case O(MANAGE,'t'):
1017 c.test = 1;
1018 continue;
1019
1020 case O(MISC,'Q'):
1021 case O(MISC,'D'):
1022 case O(MISC,'E'):
1023 case O(MISC,KillOpt):
1024 case O(MISC,'R'):
1025 case O(MISC,'S'):
1026 case O(MISC,'X'):
1027 case O(MISC, ExamineBB):
1028 case O(MISC,'o'):
1029 case O(MISC,'w'):
1030 case O(MISC,'W'):
1031 case O(MISC, WaitOpt):
1032 case O(MISC, Waitclean):
1033 case O(MISC, DetailPlatform):
1034 case O(MISC, KillSubarray):
1035 case O(MISC, UpdateSubarray):
1036 case O(MISC, Dump):
1037 case O(MISC, Restore):
1038 case O(MISC ,Action):
1039 if (opt == KillSubarray || opt == UpdateSubarray) {
1040 if (c.subarray) {
1041 pr_err("subarray can only be specified once\n");
1042 exit(2);
1043 }
1044 c.subarray = optarg;
1045 }
1046 if (opt == Action) {
1047 if (c.action) {
1048 pr_err("Only one --action can be specified\n");
1049 exit(2);
1050 }
1051 if (strcmp(optarg, "idle") == 0 ||
1052 strcmp(optarg, "frozen") == 0 ||
1053 strcmp(optarg, "check") == 0 ||
1054 strcmp(optarg, "repair") == 0)
1055 c.action = optarg;
1056 else {
1057 pr_err("action must be one of idle, frozen, check, repair\n");
1058 exit(2);
1059 }
1060 }
1061 if (devmode && devmode != opt &&
1062 (devmode == 'E' ||
1063 (opt == 'E' && devmode != 'Q'))) {
1064 pr_err("--examine/-E cannot be given with ");
1065 if (devmode == 'E') {
1066 if (option_index >= 0)
1067 fprintf(stderr, "--%s\n",
1068 long_options[option_index].name);
1069 else
1070 fprintf(stderr, "-%c\n", opt);
1071 } else if (isalpha(devmode))
1072 fprintf(stderr, "-%c\n", devmode);
1073 else
1074 fprintf(stderr, "previous option\n");
1075 exit(2);
1076 }
1077 devmode = opt;
1078 if (opt == Dump || opt == Restore) {
1079 if (dump_directory != NULL) {
1080 pr_err("dump/restore directory specified twice: %s and %s\n",
1081 dump_directory, optarg);
1082 exit(2);
1083 }
1084 dump_directory = optarg;
1085 }
1086 continue;
1087 case O(MISC, UdevRules):
1088 if (devmode && devmode != opt) {
1089 pr_err("--udev-rules must be the only option.\n");
1090 } else {
1091 if (udev_filename)
1092 pr_err("only specify one udev rule filename. %s ignored.\n",
1093 optarg);
1094 else
1095 udev_filename = optarg;
1096 }
1097 devmode = opt;
1098 continue;
1099 case O(MISC,'t'):
1100 c.test = 1;
1101 continue;
1102
1103 case O(MISC, Sparc22):
1104 if (devmode != 'E') {
1105 pr_err("--sparc2.2 only allowed with --examine\n");
1106 exit(2);
1107 }
1108 c.SparcAdjust = 1;
1109 continue;
1110
1111 case O(ASSEMBLE,'b'): /* here we simply set the bitmap file */
1112 case O(ASSEMBLE,Bitmap):
1113 if (!optarg) {
1114 pr_err("bitmap file needed with -b in --assemble mode\n");
1115 exit(2);
1116 }
1117 if (strcmp(optarg, "internal") == 0 ||
1118 strcmp(optarg, "clustered") == 0) {
1119 pr_err("no need to specify --bitmap when assembling"
1120 " arrays with internal or clustered bitmap\n");
1121 continue;
1122 }
1123 bitmap_fd = open(optarg, O_RDWR);
1124 if (!*optarg || bitmap_fd < 0) {
1125 pr_err("cannot open bitmap file %s: %s\n", optarg, strerror(errno));
1126 exit(2);
1127 }
1128 ident.bitmap_fd = bitmap_fd; /* for Assemble */
1129 continue;
1130
1131 case O(ASSEMBLE, BackupFile):
1132 case O(GROW, BackupFile):
1133 /* Specify a file into which grow might place a backup,
1134 * or from which assemble might recover a backup
1135 */
1136 if (c.backup_file) {
1137 pr_err("backup file already specified, rejecting %s\n", optarg);
1138 exit(2);
1139 }
1140 c.backup_file = optarg;
1141 continue;
1142
1143 case O(GROW, Continue):
1144 /* Continue interrupted grow
1145 */
1146 grow_continue = 1;
1147 continue;
1148 case O(ASSEMBLE, InvalidBackup):
1149 /* Acknowledge that the backupfile is invalid, but ask
1150 * to continue anyway
1151 */
1152 c.invalid_backup = 1;
1153 continue;
1154
1155 case O(BUILD,'b'):
1156 case O(BUILD,Bitmap):
1157 case O(CREATE,'b'):
1158 case O(CREATE,Bitmap): /* here we create the bitmap */
1159 case O(GROW,'b'):
1160 case O(GROW,Bitmap):
1161 if (s.bitmap_file) {
1162 pr_err("bitmap cannot be set twice. Second value: %s.\n", optarg);
1163 exit(2);
1164 }
1165 if (strcmp(optarg, "internal") == 0 ||
1166 strcmp(optarg, "none") == 0 ||
1167 strchr(optarg, '/') != NULL) {
1168 s.bitmap_file = optarg;
1169 continue;
1170 }
1171 if (strcmp(optarg, "clustered") == 0) {
1172 s.bitmap_file = optarg;
1173 /* Set the default number of cluster nodes
1174 * to 4 if not already set by user
1175 */
1176 if (c.nodes < 1)
1177 c.nodes = 4;
1178 continue;
1179 }
1180 /* probable typo */
1181 pr_err("bitmap file must contain a '/', or be 'internal', or be 'clustered', or 'none'\n"
1182 " not '%s'\n", optarg);
1183 exit(2);
1184
1185 case O(GROW,BitmapChunk):
1186 case O(BUILD,BitmapChunk):
1187 case O(CREATE,BitmapChunk): /* bitmap chunksize */
1188 s.bitmap_chunk = parse_size(optarg);
1189 if (s.bitmap_chunk == 0 ||
1190 s.bitmap_chunk == INVALID_SECTORS ||
1191 s.bitmap_chunk & (s.bitmap_chunk - 1)) {
1192 pr_err("invalid bitmap chunksize: %s\n",
1193 optarg);
1194 exit(2);
1195 }
1196 s.bitmap_chunk = s.bitmap_chunk * 512;
1197 continue;
1198
1199 case O(GROW, WriteBehind):
1200 case O(BUILD, WriteBehind):
1201 case O(CREATE, WriteBehind):
1202 s.write_behind = DEFAULT_MAX_WRITE_BEHIND;
1203 if (parse_num(&s.write_behind, optarg) != 0 ||
1204 s.write_behind < 0 || s.write_behind > 16383) {
1205 pr_err("Invalid value for maximum outstanding write-behind writes: %s.\n\tMust be between 0 and 16383.\n",
1206 optarg);
1207 exit(2);
1208 }
1209 continue;
1210 case O(INCREMENTAL, 'r'):
1211 case O(INCREMENTAL, RebuildMapOpt):
1212 rebuild_map = 1;
1213 continue;
1214 case O(INCREMENTAL, IncrementalPath):
1215 remove_path = optarg;
1216 continue;
1217 case O(CREATE, WriteJournal):
1218 if (s.journaldisks) {
1219 pr_err("Please specify only one journal device for the array.\n");
1220 pr_err("Ignoring --write-journal %s...\n", optarg);
1221 continue;
1222 }
1223 dv = xmalloc(sizeof(*dv));
1224 dv->devname = optarg;
1225 dv->disposition = 'j'; /* WriteJournal */
1226 dv->used = 0;
1227 dv->next = NULL;
1228 *devlistend = dv;
1229 devlistend = &dv->next;
1230 devs_found++;
1231
1232 s.journaldisks = 1;
1233 continue;
1234 case O(CREATE, 'k'):
1235 case O(GROW, 'k'):
1236 s.consistency_policy = map_name(consistency_policies,
1237 optarg);
1238 if (s.consistency_policy < CONSISTENCY_POLICY_RESYNC) {
1239 pr_err("Invalid consistency policy: %s\n",
1240 optarg);
1241 exit(2);
1242 }
1243 continue;
1244 }
1245 /* We have now processed all the valid options. Anything else is
1246 * an error
1247 */
1248 if (option_index > 0)
1249 pr_err(":option --%s not valid in %s mode\n",
1250 long_options[option_index].name,
1251 map_num(modes, mode));
1252 else
1253 pr_err("option -%c not valid in %s mode\n",
1254 opt, map_num(modes, mode));
1255 exit(2);
1256
1257 }
1258
1259 if (print_help) {
1260 char *help_text;
1261 if (print_help == 2)
1262 help_text = OptionHelp;
1263 else
1264 help_text = mode_help[mode];
1265 if (help_text == NULL)
1266 help_text = Help;
1267 fputs(help_text,stdout);
1268 exit(0);
1269 }
1270
1271 if (s.journaldisks) {
1272 if (s.level < 4 || s.level > 6) {
1273 pr_err("--write-journal is only supported for RAID level 4/5/6.\n");
1274 exit(2);
1275 }
1276 if (s.consistency_policy != CONSISTENCY_POLICY_UNKNOWN &&
1277 s.consistency_policy != CONSISTENCY_POLICY_JOURNAL) {
1278 pr_err("--write-journal is not supported with consistency policy: %s\n",
1279 map_num(consistency_policies, s.consistency_policy));
1280 exit(2);
1281 }
1282 }
1283
1284 if (mode == CREATE &&
1285 s.consistency_policy != CONSISTENCY_POLICY_UNKNOWN) {
1286 if (s.level <= 0) {
1287 pr_err("--consistency-policy not meaningful with level %s.\n",
1288 map_num(pers, s.level));
1289 exit(2);
1290 } else if (s.consistency_policy == CONSISTENCY_POLICY_JOURNAL &&
1291 !s.journaldisks) {
1292 pr_err("--write-journal is required for consistency policy: %s\n",
1293 map_num(consistency_policies, s.consistency_policy));
1294 exit(2);
1295 } else if (s.consistency_policy == CONSISTENCY_POLICY_PPL &&
1296 s.level != 5) {
1297 pr_err("PPL consistency policy is only supported for RAID level 5.\n");
1298 exit(2);
1299 } else if (s.consistency_policy == CONSISTENCY_POLICY_BITMAP &&
1300 (!s.bitmap_file ||
1301 strcmp(s.bitmap_file, "none") == 0)) {
1302 pr_err("--bitmap is required for consistency policy: %s\n",
1303 map_num(consistency_policies, s.consistency_policy));
1304 exit(2);
1305 } else if (s.bitmap_file &&
1306 strcmp(s.bitmap_file, "none") != 0 &&
1307 s.consistency_policy != CONSISTENCY_POLICY_BITMAP &&
1308 s.consistency_policy != CONSISTENCY_POLICY_JOURNAL) {
1309 pr_err("--bitmap is not compatible with consistency policy: %s\n",
1310 map_num(consistency_policies, s.consistency_policy));
1311 exit(2);
1312 }
1313 }
1314
1315 if (!mode && devs_found) {
1316 mode = MISC;
1317 devmode = 'Q';
1318 if (devlist->disposition == 0)
1319 devlist->disposition = devmode;
1320 }
1321 if (!mode) {
1322 fputs(Usage, stderr);
1323 exit(2);
1324 }
1325
1326 if (symlinks) {
1327 struct createinfo *ci = conf_get_create_info();
1328
1329 if (strcasecmp(symlinks, "yes") == 0)
1330 ci->symlinks = 1;
1331 else if (strcasecmp(symlinks, "no") == 0)
1332 ci->symlinks = 0;
1333 else {
1334 pr_err("option --symlinks must be 'no' or 'yes'\n");
1335 exit(2);
1336 }
1337 }
1338 /* Ok, got the option parsing out of the way
1339 * hopefully it's mostly right but there might be some stuff
1340 * missing
1341 *
1342 * That is mostly checked in the per-mode stuff but...
1343 *
1344 * For @,B,C and A without -s, the first device listed must be
1345 * an md device. We check that here and open it.
1346 */
1347
1348 if (mode == MANAGE || mode == BUILD || mode == CREATE ||
1349 mode == GROW || (mode == ASSEMBLE && ! c.scan)) {
1350 if (devs_found < 1) {
1351 pr_err("an md device must be given in this mode\n");
1352 exit(2);
1353 }
1354 if ((int)ident.super_minor == -2 && c.autof) {
1355 pr_err("--super-minor=dev is incompatible with --auto\n");
1356 exit(2);
1357 }
1358 if (mode == MANAGE || mode == GROW) {
1359 mdfd = open_mddev(devlist->devname, 1);
1360 if (mdfd < 0)
1361 exit(1);
1362 } else {
1363 char *bname = basename(devlist->devname);
1364
1365 if (strlen(bname) > MD_NAME_MAX) {
1366 pr_err("Name %s is too long.\n", devlist->devname);
1367 exit(1);
1368 }
1369 /* non-existent device is OK */
1370 mdfd = open_mddev(devlist->devname, 0);
1371 }
1372 if (mdfd == -2) {
1373 pr_err("device %s exists but is not an md array.\n", devlist->devname);
1374 exit(1);
1375 }
1376 if ((int)ident.super_minor == -2) {
1377 struct stat stb;
1378 if (mdfd < 0) {
1379 pr_err("--super-minor=dev given, and listed device %s doesn't exist.\n",
1380 devlist->devname);
1381 exit(1);
1382 }
1383 fstat(mdfd, &stb);
1384 ident.super_minor = minor(stb.st_rdev);
1385 }
1386 if (mdfd >= 0 && mode != MANAGE && mode != GROW) {
1387 /* We don't really want this open yet, we just might
1388 * have wanted to check some things
1389 */
1390 close(mdfd);
1391 mdfd = -1;
1392 }
1393 }
1394
1395 if (s.raiddisks) {
1396 if (s.raiddisks == 1 && !c.force && s.level != LEVEL_FAULTY) {
1397 pr_err("'1' is an unusual number of drives for an array, so it is probably\n"
1398 " a mistake. If you really mean it you will need to specify --force before\n"
1399 " setting the number of drives.\n");
1400 exit(2);
1401 }
1402 }
1403
1404 if (c.homehost == NULL && c.require_homehost)
1405 c.homehost = conf_get_homehost(&c.require_homehost);
1406 if (c.homehost == NULL || strcasecmp(c.homehost, "<system>") == 0) {
1407 if (gethostname(sys_hostname, sizeof(sys_hostname)) == 0) {
1408 sys_hostname[sizeof(sys_hostname)-1] = 0;
1409 c.homehost = sys_hostname;
1410 }
1411 }
1412 if (c.homehost &&
1413 (!c.homehost[0] || strcasecmp(c.homehost, "<none>") == 0)) {
1414 c.homehost = NULL;
1415 c.require_homehost = 0;
1416 }
1417
1418 rv = 0;
1419
1420 set_hooks(); /* set hooks from libs */
1421
1422 if (c.homecluster == NULL && (c.nodes > 0)) {
1423 c.homecluster = conf_get_homecluster();
1424 if (c.homecluster == NULL)
1425 rv = get_cluster_name(&c.homecluster);
1426 if (rv) {
1427 pr_err("The md can't get cluster name\n");
1428 exit(1);
1429 }
1430 }
1431
1432 if (c.update && strcmp(c.update, "nodes") == 0 && c.nodes == 0) {
1433 pr_err("Please specify nodes number with --nodes\n");
1434 exit(1);
1435 }
1436
1437 if (c.backup_file && data_offset != INVALID_SECTORS) {
1438 pr_err("--backup-file and --data-offset are incompatible\n");
1439 exit(2);
1440 }
1441
1442 if ((mode == MISC && devmode == 'E') ||
1443 (mode == MONITOR && spare_sharing == 0))
1444 /* Anyone may try this */;
1445 else if (geteuid() != 0) {
1446 pr_err("must be super-user to perform this action\n");
1447 exit(1);
1448 }
1449
1450 ident.autof = c.autof;
1451
1452 if (c.scan && c.verbose < 2)
1453 /* --scan implied --brief unless -vv */
1454 c.brief = 1;
1455
1456 if (mode == CREATE) {
1457 if (s.bitmap_file && strcmp(s.bitmap_file, "clustered") == 0) {
1458 locked = cluster_get_dlmlock();
1459 if (locked != 1)
1460 exit(1);
1461 }
1462 } else if (mode == MANAGE || mode == GROW || mode == INCREMENTAL) {
1463 if (!md_get_array_info(mdfd, &array) && (devmode != 'c')) {
1464 if (array.state & (1 << MD_SB_CLUSTERED)) {
1465 locked = cluster_get_dlmlock();
1466 if (locked != 1)
1467 exit(1);
1468 }
1469 }
1470 }
1471
1472 switch(mode) {
1473 case MANAGE:
1474 /* readonly, add/remove, readwrite, runstop */
1475 if (c.readonly > 0)
1476 rv = Manage_ro(devlist->devname, mdfd, c.readonly);
1477 if (!rv && devs_found>1)
1478 rv = Manage_subdevs(devlist->devname, mdfd,
1479 devlist->next, c.verbose, c.test,
1480 c.update, c.force);
1481 if (!rv && c.readonly < 0)
1482 rv = Manage_ro(devlist->devname, mdfd, c.readonly);
1483 if (!rv && c.runstop > 0)
1484 rv = Manage_run(devlist->devname, mdfd, &c);
1485 if (!rv && c.runstop < 0)
1486 rv = Manage_stop(devlist->devname, mdfd, c.verbose, 0);
1487 break;
1488 case ASSEMBLE:
1489 if (!c.scan && c.runstop == -1) {
1490 pr_err("--no-degraded not meaningful without a --scan assembly.\n");
1491 exit(1);
1492 } else if (devs_found == 1 && ident.uuid_set == 0 &&
1493 ident.super_minor == UnSet && ident.name[0] == 0 &&
1494 !c.scan) {
1495 /* Only a device has been given, so get details from config file */
1496 struct mddev_ident *array_ident = conf_get_ident(devlist->devname);
1497 if (array_ident == NULL) {
1498 pr_err("%s not identified in config file.\n",
1499 devlist->devname);
1500 rv |= 1;
1501 if (mdfd >= 0)
1502 close(mdfd);
1503 } else {
1504 if (array_ident->autof == 0)
1505 array_ident->autof = c.autof;
1506 rv |= Assemble(ss, devlist->devname, array_ident,
1507 NULL, &c);
1508 }
1509 } else if (!c.scan)
1510 rv = Assemble(ss, devlist->devname, &ident,
1511 devlist->next, &c);
1512 else if (devs_found > 0) {
1513 if (c.update && devs_found > 1) {
1514 pr_err("can only update a single array at a time\n");
1515 exit(1);
1516 }
1517 if (c.backup_file && devs_found > 1) {
1518 pr_err("can only assemble a single array when providing a backup file.\n");
1519 exit(1);
1520 }
1521 for (dv = devlist; dv; dv = dv->next) {
1522 struct mddev_ident *array_ident = conf_get_ident(dv->devname);
1523 if (array_ident == NULL) {
1524 pr_err("%s not identified in config file.\n",
1525 dv->devname);
1526 rv |= 1;
1527 continue;
1528 }
1529 if (array_ident->autof == 0)
1530 array_ident->autof = c.autof;
1531 rv |= Assemble(ss, dv->devname, array_ident,
1532 NULL, &c);
1533 }
1534 } else {
1535 if (c.update) {
1536 pr_err("--update not meaningful with a --scan assembly.\n");
1537 exit(1);
1538 }
1539 if (c.backup_file) {
1540 pr_err("--backup_file not meaningful with a --scan assembly.\n");
1541 exit(1);
1542 }
1543 rv = scan_assemble(ss, &c, &ident);
1544 }
1545
1546 break;
1547 case BUILD:
1548 if (c.delay == 0)
1549 c.delay = DEFAULT_BITMAP_DELAY;
1550 if (s.write_behind && !s.bitmap_file) {
1551 pr_err("write-behind mode requires a bitmap.\n");
1552 rv = 1;
1553 break;
1554 }
1555 if (s.raiddisks == 0) {
1556 pr_err("no raid-devices specified.\n");
1557 rv = 1;
1558 break;
1559 }
1560
1561 if (s.bitmap_file) {
1562 if (strcmp(s.bitmap_file, "internal") == 0 ||
1563 strcmp(s.bitmap_file, "clustered") == 0) {
1564 pr_err("'internal' and 'clustered' bitmaps not supported with --build\n");
1565 rv |= 1;
1566 break;
1567 }
1568 }
1569 rv = Build(devlist->devname, devlist->next, &s, &c);
1570 break;
1571 case CREATE:
1572 if (c.delay == 0)
1573 c.delay = DEFAULT_BITMAP_DELAY;
1574
1575 if (c.nodes) {
1576 if (!s.bitmap_file ||
1577 strcmp(s.bitmap_file, "clustered") != 0) {
1578 pr_err("--nodes argument only compatible with --bitmap=clustered\n");
1579 rv = 1;
1580 break;
1581 }
1582
1583 if (s.level != 1 && s.level != 10) {
1584 pr_err("--bitmap=clustered is currently supported with raid1/10 only\n");
1585 rv = 1;
1586 break;
1587 }
1588 if (s.level == 10 && !(is_near_layout_10(s.layout) || s.layout == UnSet)) {
1589 pr_err("only near layout is supported with clustered raid10\n");
1590 rv = 1;
1591 break;
1592 }
1593 }
1594
1595 if (s.write_behind && !s.bitmap_file) {
1596 pr_err("write-behind mode requires a bitmap.\n");
1597 rv = 1;
1598 break;
1599 }
1600 if (s.raiddisks == 0) {
1601 pr_err("no raid-devices specified.\n");
1602 rv = 1;
1603 break;
1604 }
1605
1606 rv = Create(ss, devlist->devname,
1607 ident.name, ident.uuid_set ? ident.uuid : NULL,
1608 devs_found-1, devlist->next,
1609 &s, &c, data_offset);
1610 break;
1611 case MISC:
1612 if (devmode == 'E') {
1613 if (devlist == NULL && !c.scan) {
1614 pr_err("No devices to examine\n");
1615 exit(2);
1616 }
1617 if (devlist == NULL)
1618 devlist = conf_get_devs();
1619 if (devlist == NULL) {
1620 pr_err("No devices listed in %s\n", configfile?configfile:DefaultConfFile);
1621 exit(1);
1622 }
1623 rv = Examine(devlist, &c, ss);
1624 } else if (devmode == DetailPlatform) {
1625 rv = Detail_Platform(ss ? ss->ss : NULL, ss ? c.scan : 1,
1626 c.verbose, c.export,
1627 devlist ? devlist->devname : NULL);
1628 } else if (devlist == NULL) {
1629 if (devmode == 'S' && c.scan)
1630 rv = stop_scan(c.verbose);
1631 else if ((devmode == 'D' || devmode == Waitclean) &&
1632 c.scan)
1633 rv = misc_scan(devmode, &c);
1634 else if (devmode == UdevRules)
1635 rv = Write_rules(udev_filename);
1636 else {
1637 pr_err("No devices given.\n");
1638 exit(2);
1639 }
1640 } else
1641 rv = misc_list(devlist, &ident, dump_directory, ss, &c);
1642 break;
1643 case MONITOR:
1644 if (!devlist && !c.scan) {
1645 pr_err("Cannot monitor: need --scan or at least one device\n");
1646 rv = 1;
1647 break;
1648 }
1649 if (pidfile && !daemonise) {
1650 pr_err("Cannot write a pid file when not in daemon mode\n");
1651 rv = 1;
1652 break;
1653 }
1654 if (c.delay == 0) {
1655 c.delay = conf_get_monitor_delay();
1656 if (!c.delay)
1657 c.delay = 60;
1658 }
1659 rv = Monitor(devlist, mailaddr, program,
1660 &c, daemonise, oneshot,
1661 dosyslog, pidfile, increments,
1662 spare_sharing);
1663 break;
1664
1665 case GROW:
1666 if (array_size > 0) {
1667 /* alway impose array size first, independent of
1668 * anything else
1669 * Do not allow level or raid_disks changes at the
1670 * same time as that can be irreversibly destructive.
1671 */
1672 struct mdinfo sra;
1673 int err;
1674 if (s.raiddisks || s.level != UnSet) {
1675 pr_err("cannot change array size in same operation as changing raiddisks or level.\n"
1676 " Change size first, then check that data is still intact.\n");
1677 rv = 1;
1678 break;
1679 }
1680 if (sysfs_init(&sra, mdfd, NULL)) {
1681 rv = 1;
1682 break;
1683 }
1684 if (array_size == MAX_SIZE)
1685 err = sysfs_set_str(&sra, NULL, "array_size", "default");
1686 else
1687 err = sysfs_set_num(&sra, NULL, "array_size", array_size / 2);
1688 if (err < 0) {
1689 if (errno == E2BIG)
1690 pr_err("--array-size setting is too large.\n");
1691 else
1692 pr_err("current kernel does not support setting --array-size\n");
1693 rv = 1;
1694 break;
1695 }
1696 }
1697 if (devs_found > 1 && s.raiddisks == 0 && s.level == UnSet) {
1698 /* must be '-a'. */
1699 if (s.size > 0 || s.chunk ||
1700 s.layout_str || s.bitmap_file) {
1701 pr_err("--add cannot be used with other geometry changes in --grow mode\n");
1702 rv = 1;
1703 break;
1704 }
1705 for (dv = devlist->next; dv; dv = dv->next) {
1706 rv = Grow_Add_device(devlist->devname, mdfd,
1707 dv->devname);
1708 if (rv)
1709 break;
1710 }
1711 } else if (s.bitmap_file) {
1712 if (s.size > 0 || s.raiddisks || s.chunk ||
1713 s.layout_str || devs_found > 1) {
1714 pr_err("--bitmap changes cannot be used with other geometry changes in --grow mode\n");
1715 rv = 1;
1716 break;
1717 }
1718 if (c.delay == 0)
1719 c.delay = DEFAULT_BITMAP_DELAY;
1720 rv = Grow_addbitmap(devlist->devname, mdfd, &c, &s);
1721 } else if (grow_continue)
1722 rv = Grow_continue_command(devlist->devname,
1723 mdfd, c.backup_file,
1724 c.verbose);
1725 else if (s.size > 0 || s.raiddisks || s.layout_str ||
1726 s.chunk != 0 || s.level != UnSet ||
1727 data_offset != INVALID_SECTORS) {
1728 rv = Grow_reshape(devlist->devname, mdfd,
1729 devlist->next,
1730 data_offset, &c, &s);
1731 } else if (s.consistency_policy != CONSISTENCY_POLICY_UNKNOWN) {
1732 rv = Grow_consistency_policy(devlist->devname, mdfd, &c, &s);
1733 } else if (array_size == 0)
1734 pr_err("no changes to --grow\n");
1735 break;
1736 case INCREMENTAL:
1737 if (rebuild_map) {
1738 RebuildMap();
1739 }
1740 if (c.scan) {
1741 rv = 1;
1742 if (devlist) {
1743 pr_err("In --incremental mode, a device cannot be given with --scan.\n");
1744 break;
1745 }
1746 if (c.runstop <= 0) {
1747 pr_err("--incremental --scan meaningless without --run.\n");
1748 break;
1749 }
1750 if (devmode == 'f') {
1751 pr_err("--incremental --scan --fail not supported.\n");
1752 break;
1753 }
1754 rv = IncrementalScan(&c, NULL);
1755 }
1756 if (!devlist) {
1757 if (!rebuild_map && !c.scan) {
1758 pr_err("--incremental requires a device.\n");
1759 rv = 1;
1760 }
1761 break;
1762 }
1763 if (devmode == 'f') {
1764 if (devlist->next) {
1765 pr_err("'--incremental --fail' can only handle one device.\n");
1766 rv = 1;
1767 break;
1768 }
1769 rv = IncrementalRemove(devlist->devname, remove_path,
1770 c.verbose);
1771 } else
1772 rv = Incremental(devlist, &c, ss);
1773 break;
1774 case AUTODETECT:
1775 autodetect();
1776 break;
1777 }
1778 if (locked)
1779 cluster_release_dlmlock();
1780 close_fd(&mdfd);
1781 exit(rv);
1782 }
1783
1784 static int scan_assemble(struct supertype *ss,
1785 struct context *c,
1786 struct mddev_ident *ident)
1787 {
1788 struct mddev_ident *a, *array_list = conf_get_ident(NULL);
1789 struct mddev_dev *devlist = conf_get_devs();
1790 struct map_ent *map = NULL;
1791 int cnt = 0;
1792 int rv = 0;
1793 int failures, successes;
1794
1795 if (conf_verify_devnames(array_list)) {
1796 pr_err("Duplicate MD device names in conf file were found.\n");
1797 return 1;
1798 }
1799 if (devlist == NULL) {
1800 pr_err("No devices listed in conf file were found.\n");
1801 return 1;
1802 }
1803 for (a = array_list; a; a = a->next) {
1804 a->assembled = 0;
1805 if (a->autof == 0)
1806 a->autof = c->autof;
1807 }
1808 if (map_lock(&map))
1809 pr_err("failed to get exclusive lock on mapfile\n");
1810 do {
1811 failures = 0;
1812 successes = 0;
1813 rv = 0;
1814 for (a = array_list; a; a = a->next) {
1815 int r;
1816 if (a->assembled)
1817 continue;
1818 if (a->devname &&
1819 strcasecmp(a->devname, "<ignore>") == 0)
1820 continue;
1821
1822 r = Assemble(ss, a->devname,
1823 a, NULL, c);
1824 if (r == 0) {
1825 a->assembled = 1;
1826 successes++;
1827 } else
1828 failures++;
1829 rv |= r;
1830 cnt++;
1831 }
1832 } while (failures && successes);
1833 if (c->homehost && cnt == 0) {
1834 /* Maybe we can auto-assemble something.
1835 * Repeatedly call Assemble in auto-assemble mode
1836 * until it fails
1837 */
1838 int rv2;
1839 int acnt;
1840 ident->autof = c->autof;
1841 do {
1842 struct mddev_dev *devlist = conf_get_devs();
1843 acnt = 0;
1844 do {
1845 rv2 = Assemble(ss, NULL,
1846 ident,
1847 devlist, c);
1848 if (rv2 == 0) {
1849 cnt++;
1850 acnt++;
1851 }
1852 } while (rv2 != 2);
1853 /* Incase there are stacked devices, we need to go around again */
1854 } while (acnt);
1855 if (cnt == 0 && rv == 0) {
1856 pr_err("No arrays found in config file or automatically\n");
1857 rv = 1;
1858 } else if (cnt)
1859 rv = 0;
1860 } else if (cnt == 0 && rv == 0) {
1861 pr_err("No arrays found in config file\n");
1862 rv = 1;
1863 }
1864 map_unlock(&map);
1865 return rv;
1866 }
1867
1868 static int misc_scan(char devmode, struct context *c)
1869 {
1870 /* apply --detail or --wait-clean to
1871 * all devices in /proc/mdstat
1872 */
1873 struct mdstat_ent *ms = mdstat_read(0, 1);
1874 struct mdstat_ent *e;
1875 struct map_ent *map = NULL;
1876 int members;
1877 int rv = 0;
1878
1879 for (members = 0; members <= 1; members++) {
1880 for (e = ms; e; e = e->next) {
1881 char *name = NULL;
1882 struct map_ent *me;
1883 struct stat stb;
1884 int member = e->metadata_version &&
1885 strncmp(e->metadata_version,
1886 "external:/", 10) == 0;
1887 if (members != member)
1888 continue;
1889 me = map_by_devnm(&map, e->devnm);
1890 if (me && me->path && strcmp(me->path, "/unknown") != 0)
1891 name = me->path;
1892 if (name == NULL || stat(name, &stb) != 0)
1893 name = get_md_name(e->devnm);
1894
1895 if (!name) {
1896 pr_err("cannot find device file for %s\n",
1897 e->devnm);
1898 continue;
1899 }
1900 if (devmode == 'D')
1901 rv |= Detail(name, c);
1902 else
1903 rv |= WaitClean(name, c->verbose);
1904 put_md_name(name);
1905 map_free(map);
1906 map = NULL;
1907 }
1908 }
1909 free_mdstat(ms);
1910 return rv;
1911 }
1912
1913 static int stop_scan(int verbose)
1914 {
1915 /* apply --stop to all devices in /proc/mdstat */
1916 /* Due to possible stacking of devices, repeat until
1917 * nothing more can be stopped
1918 */
1919 int progress = 1, err;
1920 int last = 0;
1921 int rv = 0;
1922 do {
1923 struct mdstat_ent *ms = mdstat_read(0, 0);
1924 struct mdstat_ent *e;
1925
1926 if (!progress) last = 1;
1927 progress = 0; err = 0;
1928 for (e = ms; e; e = e->next) {
1929 char *name = get_md_name(e->devnm);
1930 int mdfd;
1931
1932 if (!name) {
1933 pr_err("cannot find device file for %s\n",
1934 e->devnm);
1935 continue;
1936 }
1937 mdfd = open_mddev(name, 1);
1938 if (mdfd >= 0) {
1939 if (Manage_stop(name, mdfd, verbose, !last))
1940 err = 1;
1941 else
1942 progress = 1;
1943 close(mdfd);
1944 }
1945
1946 put_md_name(name);
1947 }
1948 free_mdstat(ms);
1949 } while (!last && err);
1950 if (err)
1951 rv |= 1;
1952 return rv;
1953 }
1954
1955 static int misc_list(struct mddev_dev *devlist,
1956 struct mddev_ident *ident,
1957 char *dump_directory,
1958 struct supertype *ss, struct context *c)
1959 {
1960 struct mddev_dev *dv;
1961 int rv = 0;
1962
1963 for (dv = devlist; dv; dv = (rv & 16) ? NULL : dv->next) {
1964 int mdfd = -1;
1965
1966 switch(dv->disposition) {
1967 case 'D':
1968 rv |= Detail(dv->devname, c);
1969 continue;
1970 case KillOpt: /* Zero superblock */
1971 if (ss)
1972 rv |= Kill(dv->devname, ss, c->force, c->verbose,0);
1973 else {
1974 int v = c->verbose;
1975 do {
1976 rv |= Kill(dv->devname, NULL, c->force, v, 0);
1977 v = -1;
1978 } while (rv == 0);
1979 rv &= ~4;
1980 }
1981 continue;
1982 case 'Q':
1983 rv |= Query(dv->devname);
1984 continue;
1985 case 'X':
1986 rv |= ExamineBitmap(dv->devname, c->brief, ss);
1987 continue;
1988 case ExamineBB:
1989 rv |= ExamineBadblocks(dv->devname, c->brief, ss);
1990 continue;
1991 case 'W':
1992 case WaitOpt:
1993 rv |= Wait(dv->devname);
1994 continue;
1995 case Waitclean:
1996 rv |= WaitClean(dv->devname, c->verbose);
1997 continue;
1998 case KillSubarray:
1999 rv |= Kill_subarray(dv->devname, c->subarray, c->verbose);
2000 continue;
2001 case UpdateSubarray:
2002 if (c->update == NULL) {
2003 pr_err("-U/--update must be specified with --update-subarray\n");
2004 rv |= 1;
2005 continue;
2006 }
2007 rv |= Update_subarray(dv->devname, c->subarray,
2008 c->update, ident, c->verbose);
2009 continue;
2010 case Dump:
2011 rv |= Dump_metadata(dv->devname, dump_directory, c, ss);
2012 continue;
2013 case Restore:
2014 rv |= Restore_metadata(dv->devname, dump_directory, c, ss,
2015 (dv == devlist && dv->next == NULL));
2016 continue;
2017 case Action:
2018 rv |= SetAction(dv->devname, c->action);
2019 continue;
2020 }
2021
2022 if (dv->devname[0] != '/')
2023 mdfd = open_dev(dv->devname);
2024 if (dv->devname[0] == '/' || mdfd < 0)
2025 mdfd = open_mddev(dv->devname, 1);
2026
2027 if (mdfd >= 0) {
2028 switch(dv->disposition) {
2029 case 'R':
2030 c->runstop = 1;
2031 rv |= Manage_run(dv->devname, mdfd, c);
2032 break;
2033 case 'S':
2034 if (c->scan) {
2035 pr_err("--stop not meaningful with both a --scan assembly and a device name.\n");
2036 rv |= 1;
2037 break;
2038 }
2039 rv |= Manage_stop(dv->devname, mdfd, c->verbose, 0);
2040 break;
2041 case 'o':
2042 rv |= Manage_ro(dv->devname, mdfd, 1);
2043 break;
2044 case 'w':
2045 rv |= Manage_ro(dv->devname, mdfd, -1);
2046 break;
2047 }
2048 close(mdfd);
2049 } else
2050 rv |= 1;
2051 }
2052 return rv;
2053 }
2054
2055 int SetAction(char *dev, char *action)
2056 {
2057 int fd = open(dev, O_RDONLY);
2058 struct mdinfo mdi;
2059 int retval;
2060
2061 if (fd < 0) {
2062 pr_err("Couldn't open %s: %s\n", dev, strerror(errno));
2063 return 1;
2064 }
2065 retval = sysfs_init(&mdi, fd, NULL);
2066 close(fd);
2067 if (retval) {
2068 pr_err("%s is no an md array\n", dev);
2069 return 1;
2070 }
2071
2072 if (sysfs_set_str(&mdi, NULL, "sync_action", action) < 0) {
2073 pr_err("Count not set action for %s to %s: %s\n",
2074 dev, action, strerror(errno));
2075 return 1;
2076 }
2077 return 0;
2078 }
Unnamed repository; edit this file 'description' to name the repository.