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