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[thirdparty/mdadm.git] / mdadm.c
1 /*
2 * mdadm - manage Linux "md" devices aka RAID arrays.
3 *
4 * Copyright (C) 2001-2006 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@cse.unsw.edu.au>
23 * Paper: Neil Brown
24 * School of Computer Science and Engineering
25 * The University of New South Wales
26 * Sydney, 2052
27 * Australia
28 *
29 * Additions for bitmap and write-behind RAID options, Copyright (C) 2003-2004,
30 * Paul Clements, SteelEye Technology, Inc.
31 */
32
33 #include "mdadm.h"
34 #include "md_p.h"
35 #include <ctype.h>
36
37
38 int main(int argc, char *argv[])
39 {
40 int mode = 0;
41 int opt;
42 int option_index;
43 char *c;
44 int rv;
45 int i;
46
47 int chunk = 0;
48 long long size = -1;
49 int level = UnSet;
50 int layout = UnSet;
51 int raiddisks = 0;
52 int max_disks = MD_SB_DISKS; /* just a default */
53 int sparedisks = 0;
54 struct mddev_ident_s ident;
55 char *configfile = NULL;
56 char *cp;
57 char *update = NULL;
58 int scan = 0;
59 char devmode = 0;
60 int runstop = 0;
61 int readonly = 0;
62 int write_behind = 0;
63 int bitmap_fd = -1;
64 char *bitmap_file = NULL;
65 char *backup_file = NULL;
66 int bitmap_chunk = UnSet;
67 int SparcAdjust = 0;
68 mddev_dev_t devlist = NULL;
69 mddev_dev_t *devlistend = & devlist;
70 mddev_dev_t dv;
71 int devs_found = 0;
72 int verbose = 0;
73 int quiet = 0;
74 int brief = 0;
75 int force = 0;
76 int test = 0;
77 int assume_clean = 0;
78 char *symlinks = NULL;
79 /* autof indicates whether and how to create device node.
80 * bottom 3 bits are style. Rest (when shifted) are number of parts
81 * 0 - unset
82 * 1 - don't create (no)
83 * 2 - if is_standard, then create (yes)
84 * 3 - create as 'md' - reject is_standard mdp (md)
85 * 4 - create as 'mdp' - reject is_standard md (mdp)
86 * 5 - default to md if not is_standard (md in config file)
87 * 6 - default to mdp if not is_standard (part, or mdp in config file)
88 */
89 int autof = 0;
90
91 char *homehost = NULL;
92 char sys_hostname[256];
93 char *mailaddr = NULL;
94 char *program = NULL;
95 int delay = 0;
96 int daemonise = 0;
97 char *pidfile = NULL;
98 int oneshot = 0;
99 struct supertype *ss = NULL;
100 int writemostly = 0;
101 int re_add = 0;
102 char *shortopt = short_options;
103 int dosyslog = 0;
104 int auto_update_home = 0;
105
106 int copies;
107 int print_help = 0;
108
109 int mdfd = -1;
110
111 srandom(time(0) ^ getpid());
112
113 ident.uuid_set=0;
114 ident.level = UnSet;
115 ident.raid_disks = UnSet;
116 ident.super_minor= UnSet;
117 ident.devices=0;
118 ident.spare_group = NULL;
119 ident.autof = 0;
120 ident.st = NULL;
121 ident.bitmap_fd = -1;
122 ident.bitmap_file = NULL;
123 ident.name[0] = 0;
124
125 while ((option_index = -1) ,
126 (opt=getopt_long(argc, argv,
127 shortopt, long_options,
128 &option_index)) != -1) {
129 int newmode = mode;
130 /* firstly, some mode-independant options */
131 switch(opt) {
132 case 'h':
133 if (option_index > 0 &&
134 strcmp(long_options[option_index].name, "help-options")==0)
135 print_help = 2;
136 else
137 print_help = 1;
138 continue;
139
140 case 'V':
141 fputs(Version, stderr);
142 exit(0);
143
144 case 'v': verbose++;
145 continue;
146
147 case 'q': quiet++;
148 continue;
149
150 case 'b':
151 if (mode == ASSEMBLE || mode == BUILD || mode == CREATE || mode == GROW)
152 break; /* b means bitmap */
153 brief = 1;
154 if (optarg) {
155 fprintf(stderr, Name ": -b cannot have any extra immediately after it, sorry.\n");
156 exit(2);
157 }
158 continue;
159
160 case HomeHost:
161 homehost = optarg;
162 continue;
163
164 case ':':
165 case '?':
166 fputs(Usage, stderr);
167 exit(2);
168 }
169 /* second, figure out the mode.
170 * Some options force the mode. Others
171 * set the mode if it isn't already
172 */
173
174 switch(opt) {
175 case '@': /* just incase they say --manage */
176 newmode = MANAGE;
177 shortopt = short_bitmap_auto_options;
178 break;
179 case 'a':
180 case 'r':
181 case 'f':
182 case ReAdd: /* re-add */
183 if (!mode) {
184 newmode = MANAGE;
185 shortopt = short_bitmap_auto_options;
186 }
187 break;
188
189 case 'A': newmode = ASSEMBLE; shortopt = short_bitmap_auto_options; break;
190 case 'B': newmode = BUILD; shortopt = short_bitmap_auto_options; break;
191 case 'C': newmode = CREATE; shortopt = short_bitmap_auto_options; break;
192 case 'F': newmode = MONITOR;break;
193 case 'G': newmode = GROW; shortopt = short_bitmap_auto_options; break;
194
195 case '#':
196 case 'D':
197 case 'E':
198 case 'X':
199 case 'Q': newmode = MISC; break;
200 case 'R':
201 case 'S':
202 case 'o':
203 case 'w':
204 case 'K': if (!mode) newmode = MISC; break;
205 }
206 if (mode && newmode == mode) {
207 /* everybody happy ! */
208 } else if (mode && newmode != mode) {
209 /* not allowed.. */
210 fprintf(stderr, Name ": ");
211 if (option_index >= 0)
212 fprintf(stderr, "--%s", long_options[option_index].name);
213 else
214 fprintf(stderr, "-%c", opt);
215 fprintf(stderr, " would set mdadm mode to \"%s\", but it is already set to \"%s\".\n",
216 map_num(modes, newmode),
217 map_num(modes, mode));
218 exit(2);
219 } else if (!mode && newmode) {
220 mode = newmode;
221 } else {
222 /* special case of -c --help */
223 if (opt == 'c' &&
224 ( strncmp(optarg, "--h", 3)==0 ||
225 strncmp(optarg, "-h", 2)==0)) {
226 fputs(Help_config, stderr);
227 exit(0);
228 }
229
230 /* If first option is a device, don't force the mode yet */
231 if (opt == 1) {
232 if (devs_found == 0) {
233 dv = malloc(sizeof(*dv));
234 if (dv == NULL) {
235 fprintf(stderr, Name ": malloc failed\n");
236 exit(3);
237 }
238 dv->devname = optarg;
239 dv->disposition = devmode;
240 dv->writemostly = writemostly;
241 dv->re_add = re_add;
242 dv->used = 0;
243 dv->next = NULL;
244 *devlistend = dv;
245 devlistend = &dv->next;
246
247 devs_found++;
248 continue;
249 }
250 /* No mode yet, and this is the second device ... */
251 fprintf(stderr, Name ": An option must be given to set the mode before a second device is listed\n");
252 exit(2);
253 }
254 if (option_index >= 0)
255 fprintf(stderr, Name ": --%s", long_options[option_index].name);
256 else
257 fprintf(stderr, Name ": -%c", opt);
258 fprintf(stderr, " does not set the mode, and so cannot be the first option.\n");
259 exit(2);
260 }
261
262 /* if we just set the mode, then done */
263 switch(opt) {
264 case '@':
265 case '#':
266 case 'A':
267 case 'B':
268 case 'C':
269 case 'F':
270 case 'G':
271 continue;
272 }
273 if (opt == 1) {
274 /* an undecorated option - must be a device name.
275 */
276 if (devs_found > 0 && mode == '@' && !devmode) {
277 fprintf(stderr, Name ": Must give one of -a/-r/-f for subsequent devices at %s\n", optarg);
278 exit(2);
279 }
280 if (devs_found > 0 && mode == 'G' && !devmode) {
281 fprintf(stderr, Name ": Must give one of -a for devices do add: %s\n", optarg);
282 exit(2);
283 }
284 dv = malloc(sizeof(*dv));
285 if (dv == NULL) {
286 fprintf(stderr, Name ": malloc failed\n");
287 exit(3);
288 }
289 dv->devname = optarg;
290 dv->disposition = devmode;
291 dv->writemostly = writemostly;
292 dv->re_add = re_add;
293 dv->next = NULL;
294 *devlistend = dv;
295 devlistend = &dv->next;
296
297 devs_found++;
298 continue;
299 }
300
301 /* We've got a mode, and opt is now something else which
302 * could depend on the mode */
303 #define O(a,b) ((a<<8)|b)
304 switch (O(mode,opt)) {
305 case O(CREATE,'c'):
306 case O(BUILD,'c'): /* chunk or rounding */
307 if (chunk) {
308 fprintf(stderr, Name ": chunk/rounding may only be specified once. "
309 "Second value is %s.\n", optarg);
310 exit(2);
311 }
312 chunk = strtol(optarg, &c, 10);
313 if (!optarg[0] || *c || chunk<4 || ((chunk-1)&chunk)) {
314 fprintf(stderr, Name ": invalid chunk/rounding value: %s\n",
315 optarg);
316 exit(2);
317 }
318 continue;
319
320 case O(ASSEMBLE,AutoHomeHost):
321 auto_update_home = 1;
322 continue;
323 case O(CREATE,'e'):
324 case O(ASSEMBLE,'e'):
325 case O(MISC,'e'): /* set metadata (superblock) information */
326 if (ss) {
327 fprintf(stderr, Name ": metadata information already given\n");
328 exit(2);
329 }
330 for(i=0; !ss && superlist[i]; i++)
331 ss = superlist[i]->match_metadata_desc(optarg);
332
333 if (!ss) {
334 fprintf(stderr, Name ": unrecognised metadata identifier: %s\n", optarg);
335 exit(2);
336 }
337 max_disks = ss->max_devs;
338 continue;
339
340 case O(MANAGE,'W'):
341 case O(BUILD,'W'):
342 case O(CREATE,'W'):
343 /* set write-mostly for following devices */
344 writemostly = 1;
345 continue;
346
347 case O(GROW,'z'):
348 case O(CREATE,'z'): /* size */
349 if (size >= 0) {
350 fprintf(stderr, Name ": size may only be specified once. "
351 "Second value is %s.\n", optarg);
352 exit(2);
353 }
354 if (strcmp(optarg, "max")==0)
355 size = 0;
356 else {
357 size = strtoll(optarg, &c, 10);
358 if (!optarg[0] || *c || size < 4) {
359 fprintf(stderr, Name ": invalid size: %s\n",
360 optarg);
361 exit(2);
362 }
363 }
364 continue;
365
366 case O(GROW,'l'): /* hack - needed to understand layout */
367 case O(CREATE,'l'):
368 case O(BUILD,'l'): /* set raid level*/
369 if (level != UnSet) {
370 fprintf(stderr, Name ": raid level may only be set once. "
371 "Second value is %s.\n", optarg);
372 exit(2);
373 }
374 level = map_name(pers, optarg);
375 if (level == UnSet) {
376 fprintf(stderr, Name ": invalid raid level: %s\n",
377 optarg);
378 exit(2);
379 }
380 if (level != 0 && level != -1 && level != 1 && level != -4 && level != -5 && mode == BUILD) {
381 fprintf(stderr, Name ": Raid level %s not permitted with --build.\n",
382 optarg);
383 exit(2);
384 }
385 if (sparedisks > 0 && level < 1 && level >= -1) {
386 fprintf(stderr, Name ": raid level %s is incompatible with spare-devices setting.\n",
387 optarg);
388 exit(2);
389 }
390 ident.level = level;
391 continue;
392
393 case O(CREATE,'p'): /* raid5 layout */
394 case O(BUILD,'p'): /* faulty layout */
395 case O(GROW, 'p'): /* faulty reconfig */
396 if (layout != UnSet) {
397 fprintf(stderr,Name ": layout may only be sent once. "
398 "Second value was %s\n", optarg);
399 exit(2);
400 }
401 switch(level) {
402 default:
403 fprintf(stderr, Name ": layout not meaningful for %s arrays.\n",
404 map_num(pers, level));
405 exit(2);
406 case UnSet:
407 fprintf(stderr, Name ": raid level must be given before layout.\n");
408 exit(2);
409
410 case 5:
411 case 6:
412 layout = map_name(r5layout, optarg);
413 if (layout==UnSet) {
414 fprintf(stderr, Name ": layout %s not understood for raid5.\n",
415 optarg);
416 exit(2);
417 }
418 break;
419
420 case 10:
421 /* 'f', 'o' or 'n' followed by a number <= raid_disks */
422 if ((optarg[0] != 'n' && optarg[0] != 'f' && optarg[0] != 'o') ||
423 (copies = strtoul(optarg+1, &cp, 10)) < 1 ||
424 copies > 200 ||
425 *cp) {
426 fprintf(stderr, Name ": layout for raid10 must be 'nNN', 'oNN' or 'fNN' where NN is a number, not %s\n", optarg);
427 exit(2);
428 }
429 if (optarg[0] == 'n')
430 layout = 256 + copies;
431 else if (optarg[0] == 'o')
432 layout = 0x10000 + (copies<<8) + 1;
433 else
434 layout = 1 + (copies<<8);
435 break;
436 case -5: /* Faulty
437 * modeNNN
438 */
439
440 {
441 int ln = strcspn(optarg, "0123456789");
442 char *m = strdup(optarg);
443 int mode;
444 m[ln] = 0;
445 mode = map_name(faultylayout, m);
446 if (mode == UnSet) {
447 fprintf(stderr, Name ": layout %s not understood for faulty.\n",
448 optarg);
449 exit(2);
450 }
451 layout = mode | (atoi(optarg+ln)<< ModeShift);
452 }
453 }
454 continue;
455
456 case O(CREATE,AssumeClean):
457 case O(BUILD,AssumeClean): /* assume clean */
458 assume_clean = 1;
459 continue;
460
461 case O(GROW,'n'):
462 case O(CREATE,'n'):
463 case O(BUILD,'n'): /* number of raid disks */
464 if (raiddisks) {
465 fprintf(stderr, Name ": raid-devices set twice: %d and %s\n",
466 raiddisks, optarg);
467 exit(2);
468 }
469 raiddisks = strtol(optarg, &c, 10);
470 if (!optarg[0] || *c || raiddisks<=0) {
471 fprintf(stderr, Name ": invalid number of raid devices: %s\n",
472 optarg);
473 exit(2);
474 }
475 ident.raid_disks = raiddisks;
476 continue;
477
478 case O(CREATE,'x'): /* number of spare (eXtra) discs */
479 if (sparedisks) {
480 fprintf(stderr,Name ": spare-devices set twice: %d and %s\n",
481 sparedisks, optarg);
482 exit(2);
483 }
484 if (level != UnSet && level <= 0 && level >= -1) {
485 fprintf(stderr, Name ": spare-devices setting is incompatible with raid level %d\n",
486 level);
487 exit(2);
488 }
489 sparedisks = strtol(optarg, &c, 10);
490 if (!optarg[0] || *c || sparedisks < 0) {
491 fprintf(stderr, Name ": invalid number of spare-devices: %s\n",
492 optarg);
493 exit(2);
494 }
495 continue;
496
497 case O(CREATE,'a'):
498 case O(BUILD,'a'):
499 case O(ASSEMBLE,'a'): /* auto-creation of device node */
500 autof = parse_auto(optarg, "--auto flag", 0);
501 continue;
502
503 case O(CREATE,Symlinks):
504 case O(BUILD,Symlinks):
505 case O(ASSEMBLE,Symlinks): /* auto creation of symlinks in /dev to /dev/md */
506 symlinks = optarg;
507 continue;
508
509 case O(BUILD,'f'): /* force honouring '-n 1' */
510 case O(GROW,'f'): /* ditto */
511 case O(CREATE,'f'): /* force honouring of device list */
512 case O(ASSEMBLE,'f'): /* force assembly */
513 case O(MISC,'f'): /* force zero */
514 force=1;
515 continue;
516
517 /* now for the Assemble options */
518 case O(ASSEMBLE,'u'): /* uuid of array */
519 if (ident.uuid_set) {
520 fprintf(stderr, Name ": uuid cannot be set twice. "
521 "Second value %s.\n", optarg);
522 exit(2);
523 }
524 if (parse_uuid(optarg, ident.uuid))
525 ident.uuid_set = 1;
526 else {
527 fprintf(stderr,Name ": Bad uuid: %s\n", optarg);
528 exit(2);
529 }
530 continue;
531
532 case O(CREATE,'N'):
533 case O(ASSEMBLE,'N'):
534 if (ident.name[0]) {
535 fprintf(stderr, Name ": name cannot be set twice. "
536 "Second value %s.\n", optarg);
537 exit(2);
538 }
539 if (strlen(optarg) > 32) {
540 fprintf(stderr, Name ": name '%s' is too long, 32 chars max.\n",
541 optarg);
542 exit(2);
543 }
544 strcpy(ident.name, optarg);
545 continue;
546
547 case O(ASSEMBLE,'m'): /* super-minor for array */
548 if (ident.super_minor != UnSet) {
549 fprintf(stderr, Name ": super-minor cannot be set twice. "
550 "Second value: %s.\n", optarg);
551 exit(2);
552 }
553 if (strcmp(optarg, "dev")==0)
554 ident.super_minor = -2;
555 else {
556 ident.super_minor = strtoul(optarg, &cp, 10);
557 if (!optarg[0] || *cp) {
558 fprintf(stderr, Name ": Bad super-minor number: %s.\n", optarg);
559 exit(2);
560 }
561 }
562 continue;
563
564 case O(ASSEMBLE,'U'): /* update the superblock */
565 if (update) {
566 fprintf(stderr, Name ": Can only update one aspect of superblock, both %s and %s given.\n",
567 update, optarg);
568 exit(2);
569 }
570 update = optarg;
571 if (strcmp(update, "sparc2.2")==0)
572 continue;
573 if (strcmp(update, "super-minor") == 0)
574 continue;
575 if (strcmp(update, "summaries")==0)
576 continue;
577 if (strcmp(update, "resync")==0)
578 continue;
579 if (strcmp(update, "uuid")==0)
580 continue;
581 if (strcmp(update, "name")==0)
582 continue;
583 if (strcmp(update, "homehost")==0)
584 continue;
585 if (strcmp(update, "byteorder")==0) {
586 if (ss) {
587 fprintf(stderr, Name ": must not set metadata type with --update=byteorder.\n");
588 exit(2);
589 }
590 for(i=0; !ss && superlist[i]; i++)
591 ss = superlist[i]->match_metadata_desc("0.swap");
592 if (!ss) {
593 fprintf(stderr, Name ": INTERNAL ERROR cannot find 0.swap\n");
594 exit(2);
595 }
596
597 continue;
598 }
599 fprintf(stderr, Name ": '--update %s' invalid. Only 'sparc2.2', 'super-minor', 'uuid', 'resync' or 'summaries' supported\n",update);
600 exit(2);
601
602 case O(ASSEMBLE,NoDegraded): /* --no-degraded */
603 runstop = -1; /* --stop isn't allowed for --assemble, so we overload slightly */
604 continue;
605
606 case O(ASSEMBLE,'c'): /* config file */
607 case O(MISC, 'c'):
608 case O(MONITOR,'c'):
609 if (configfile) {
610 fprintf(stderr, Name ": configfile cannot be set twice. "
611 "Second value is %s.\n", optarg);
612 exit(2);
613 }
614 configfile = optarg;
615 set_conffile(configfile);
616 /* FIXME possibly check that config file exists. Even parse it */
617 continue;
618 case O(ASSEMBLE,'s'): /* scan */
619 case O(MISC,'s'):
620 case O(MONITOR,'s'):
621 scan = 1;
622 continue;
623
624 case O(MONITOR,'m'): /* mail address */
625 if (mailaddr)
626 fprintf(stderr, Name ": only specify one mailaddress. %s ignored.\n",
627 optarg);
628 else
629 mailaddr = optarg;
630 continue;
631
632 case O(MONITOR,'p'): /* alert program */
633 if (program)
634 fprintf(stderr, Name ": only specify one alter program. %s ignored.\n",
635 optarg);
636 else
637 program = optarg;
638 continue;
639
640 case O(MONITOR,'d'): /* delay in seconds */
641 case O(GROW, 'd'):
642 case O(BUILD,'d'): /* delay for bitmap updates */
643 case O(CREATE,'d'):
644 if (delay)
645 fprintf(stderr, Name ": only specify delay once. %s ignored.\n",
646 optarg);
647 else {
648 delay = strtol(optarg, &c, 10);
649 if (!optarg[0] || *c || delay<1) {
650 fprintf(stderr, Name ": invalid delay: %s\n",
651 optarg);
652 exit(2);
653 }
654 }
655 continue;
656 case O(MONITOR,'f'): /* daemonise */
657 daemonise = 1;
658 continue;
659 case O(MONITOR,'i'): /* pid */
660 if (pidfile)
661 fprintf(stderr, Name ": only specify one pid file. %s ignored.\n",
662 optarg);
663 else
664 pidfile = optarg;
665 continue;
666 case O(MONITOR,'1'): /* oneshot */
667 oneshot = 1;
668 continue;
669 case O(MONITOR,'t'): /* test */
670 test = 1;
671 continue;
672 case O(MONITOR,'y'): /* log messages to syslog */
673 openlog("mdadm", 0, SYSLOG_FACILITY);
674 dosyslog = 1;
675 continue;
676
677 /* now the general management options. Some are applicable
678 * to other modes. None have arguments.
679 */
680 case O(GROW,'a'):
681 case O(MANAGE,'a'): /* add a drive */
682 devmode = 'a';
683 re_add = 0;
684 continue;
685 case O(MANAGE,ReAdd):
686 devmode = 'a';
687 re_add = 1;
688 continue;
689 case O(MANAGE,'r'): /* remove a drive */
690 devmode = 'r';
691 continue;
692 case O(MANAGE,'f'): /* set faulty */
693 devmode = 'f';
694 continue;
695 case O(MANAGE,'R'):
696 case O(ASSEMBLE,'R'):
697 case O(BUILD,'R'):
698 case O(CREATE,'R'): /* Run the array */
699 if (runstop < 0) {
700 fprintf(stderr, Name ": Cannot both Stop and Run an array\n");
701 exit(2);
702 }
703 runstop = 1;
704 continue;
705 case O(MANAGE,'S'):
706 if (runstop > 0) {
707 fprintf(stderr, Name ": Cannot both Run and Stop an array\n");
708 exit(2);
709 }
710 runstop = -1;
711 continue;
712
713 case O(MANAGE,'o'):
714 if (readonly < 0) {
715 fprintf(stderr, Name ": Cannot have both readonly and readwrite\n");
716 exit(2);
717 }
718 readonly = 1;
719 continue;
720 case O(MANAGE,'w'):
721 if (readonly > 0) {
722 fprintf(stderr, Name ": Cannot have both readwrite and readonly.\n");
723 exit(2);
724 }
725 readonly = -1;
726 continue;
727
728 case O(MISC,'Q'):
729 case O(MISC,'D'):
730 case O(MISC,'E'):
731 case O(MISC,'K'):
732 case O(MISC,'R'):
733 case O(MISC,'S'):
734 case O(MISC,'X'):
735 case O(MISC,'o'):
736 case O(MISC,'w'):
737 if (devmode && devmode != opt &&
738 (devmode == 'E' || (opt == 'E' && devmode != 'Q'))) {
739 fprintf(stderr, Name ": --examine/-E cannot be given with -%c\n",
740 devmode =='E'?opt:devmode);
741 exit(2);
742 }
743 devmode = opt;
744 continue;
745 case O(MISC,'t'):
746 test = 1;
747 continue;
748
749 case O(MISC, Sparc22):
750 if (devmode != 'E') {
751 fprintf(stderr, Name ": --sparc2.2 only allowed with --examine\n");
752 exit(2);
753 }
754 SparcAdjust = 1;
755 continue;
756
757 case O(ASSEMBLE,'b'): /* here we simply set the bitmap file */
758 if (!optarg) {
759 fprintf(stderr, Name ": bitmap file needed with -b in --assemble mode\n");
760 exit(2);
761 }
762 if (strcmp(optarg, "internal")==0) {
763 fprintf(stderr, Name ": there is no need to specify --bitmap when assembling arrays with internal bitmaps\n");
764 continue;
765 }
766 bitmap_fd = open(optarg, O_RDWR);
767 if (!*optarg || bitmap_fd < 0) {
768 fprintf(stderr, Name ": cannot open bitmap file %s: %s\n", optarg, strerror(errno));
769 exit(2);
770 }
771 ident.bitmap_fd = bitmap_fd; /* for Assemble */
772 continue;
773
774 case O(ASSEMBLE, BackupFile):
775 case O(GROW, BackupFile):
776 /* Specify a file into which grow might place a backup,
777 * or from which assemble might recover a backup
778 */
779 if (backup_file) {
780 fprintf(stderr, Name ": backup file already specified, rejecting %s\n", optarg);
781 exit(2);
782 }
783 backup_file = optarg;
784 continue;
785
786 case O(GROW,'b'):
787 case O(BUILD,'b'):
788 case O(CREATE,'b'): /* here we create the bitmap */
789 if (strcmp(optarg, "internal")== 0 ||
790 strcmp(optarg, "none")== 0 ||
791 strchr(optarg, '/') != NULL) {
792 bitmap_file = optarg;
793 continue;
794 }
795 /* probable typo */
796 fprintf(stderr, Name ": bitmap file must contain a '/', or be 'internal', or 'none'\n");
797 exit(2);
798
799 case O(GROW,BitmapChunk):
800 case O(BUILD,BitmapChunk):
801 case O(CREATE,BitmapChunk): /* bitmap chunksize */
802 bitmap_chunk = strtol(optarg, &c, 10);
803 if (!optarg[0] || *c || bitmap_chunk < 0 ||
804 bitmap_chunk & (bitmap_chunk - 1)) {
805 fprintf(stderr, Name ": invalid bitmap chunksize: %s\n",
806 optarg);
807 exit(2);
808 }
809 /* convert K to B, chunk of 0K means 512B */
810 bitmap_chunk = bitmap_chunk ? bitmap_chunk * 1024 : 512;
811 continue;
812
813 case O(BUILD, WriteBehind):
814 case O(CREATE, WriteBehind): /* write-behind mode */
815 write_behind = DEFAULT_MAX_WRITE_BEHIND;
816 if (optarg) {
817 write_behind = strtol(optarg, &c, 10);
818 if (write_behind < 0 || *c ||
819 write_behind > 16383) {
820 fprintf(stderr, Name ": Invalid value for maximum outstanding write-behind writes: %s.\n\tMust be between 0 and 16383.\n", optarg);
821 exit(2);
822 }
823 }
824 continue;
825 }
826 /* We have now processed all the valid options. Anything else is
827 * an error
828 */
829 if (option_index > 0)
830 fprintf(stderr, Name ":option --%s not valid in %s mode\n",
831 long_options[option_index].name,
832 map_num(modes, mode));
833 else
834 fprintf(stderr, Name ": option -%c not valid in %s mode\n",
835 opt, map_num(modes, mode));
836 exit(2);
837
838 }
839
840 if (print_help) {
841 char *help_text = Help;
842 if (print_help == 2)
843 help_text = OptionHelp;
844 else
845 switch (mode) {
846 case ASSEMBLE : help_text = Help_assemble; break;
847 case BUILD : help_text = Help_build; break;
848 case CREATE : help_text = Help_create; break;
849 case MANAGE : help_text = Help_manage; break;
850 case MISC : help_text = Help_misc; break;
851 case MONITOR : help_text = Help_monitor; break;
852 case GROW : help_text = Help_grow; break;
853 }
854 fputs(help_text,stderr);
855 exit(0);
856 }
857
858 if (!mode && devs_found) {
859 mode = MISC;
860 devmode = 'Q';
861 if (devlist->disposition == 0)
862 devlist->disposition = devmode;
863 }
864 if (!mode) {
865 fputs(Usage, stderr);
866 exit(2);
867 }
868
869 if (symlinks) {
870 struct createinfo *ci = conf_get_create_info();
871
872 if (strcasecmp(symlinks, "yes") == 0)
873 ci->symlinks = 1;
874 else if (strcasecmp(symlinks, "no") == 0)
875 ci->symlinks = 0;
876 else {
877 fprintf(stderr, Name ": option --symlinks must be 'no' or 'yes'\n");
878 exit(2);
879 }
880 }
881 /* Ok, got the option parsing out of the way
882 * hopefully it's mostly right but there might be some stuff
883 * missing
884 *
885 * That is mosty checked in the per-mode stuff but...
886 *
887 * For @,B,C and A without -s, the first device listed must be an md device
888 * we check that here and open it.
889 */
890
891 if (mode==MANAGE || mode == BUILD || mode == CREATE || mode == GROW ||
892 (mode == ASSEMBLE && ! scan)) {
893 if (devs_found < 1) {
894 fprintf(stderr, Name ": an md device must be given in this mode\n");
895 exit(2);
896 }
897 if ((int)ident.super_minor == -2 && autof) {
898 fprintf(stderr, Name ": --super-minor=dev is incompatible with --auto\n");
899 exit(2);
900 }
901 if (mode == MANAGE || mode == GROW)
902 autof=1; /* Don't create */
903 mdfd = open_mddev(devlist->devname, autof);
904 if (mdfd < 0)
905 exit(1);
906 if ((int)ident.super_minor == -2) {
907 struct stat stb;
908 fstat(mdfd, &stb);
909 ident.super_minor = minor(stb.st_rdev);
910 }
911 }
912
913 if (raiddisks) {
914 if (raiddisks > max_disks) {
915 fprintf(stderr, Name ": invalid number of raid devices: %d\n",
916 raiddisks);
917 exit(2);
918 }
919 if (raiddisks == 1 && !force && level != -5) {
920 fprintf(stderr, Name ": '1' is an unusual number of drives for an array, so it is probably\n"
921 " a mistake. If you really mean it you will need to specify --force before\n"
922 " setting the number of drives.\n");
923 exit(2);
924 }
925 }
926 if (sparedisks) {
927 if ( sparedisks > max_disks - raiddisks) {
928 fprintf(stderr, Name ": invalid number of spare-devices: %d\n",
929 sparedisks);
930 exit(2);
931 }
932 }
933
934 if (homehost == NULL)
935 homehost = conf_get_homehost();
936 if (homehost && strcmp(homehost, "<system>")==0) {
937 if (gethostname(sys_hostname, sizeof(sys_hostname)) == 0) {
938 sys_hostname[sizeof(sys_hostname)-1] = 0;
939 homehost = sys_hostname;
940 }
941 }
942
943 rv = 0;
944 switch(mode) {
945 case MANAGE:
946 /* readonly, add/remove, readwrite, runstop */
947 if (readonly>0)
948 rv = Manage_ro(devlist->devname, mdfd, readonly);
949 if (!rv && devs_found>1)
950 rv = Manage_subdevs(devlist->devname, mdfd,
951 devlist->next, verbose-quiet);
952 if (!rv && readonly < 0)
953 rv = Manage_ro(devlist->devname, mdfd, readonly);
954 if (!rv && runstop)
955 rv = Manage_runstop(devlist->devname, mdfd, runstop, quiet);
956 break;
957 case ASSEMBLE:
958 if (devs_found == 1 && ident.uuid_set == 0 &&
959 ident.super_minor == UnSet && ident.name[0] == 0 && !scan ) {
960 /* Only a device has been given, so get details from config file */
961 mddev_ident_t array_ident = conf_get_ident(devlist->devname);
962 if (array_ident == NULL) {
963 fprintf(stderr, Name ": %s not identified in config file.\n",
964 devlist->devname);
965 rv |= 1;
966 } else {
967 mdfd = open_mddev(devlist->devname,
968 array_ident->autof ? array_ident->autof : autof);
969 if (mdfd < 0)
970 rv |= 1;
971 else {
972 rv |= Assemble(ss, devlist->devname, mdfd, array_ident,
973 NULL, backup_file,
974 readonly, runstop, update, homehost, verbose-quiet, force);
975 close(mdfd);
976 }
977 }
978 } else if (!scan)
979 rv = Assemble(ss, devlist->devname, mdfd, &ident,
980 devlist->next, backup_file,
981 readonly, runstop, update, homehost, verbose-quiet, force);
982 else if (devs_found>0) {
983 if (update && devs_found > 1) {
984 fprintf(stderr, Name ": can only update a single array at a time\n");
985 exit(1);
986 }
987 if (backup_file && devs_found > 1) {
988 fprintf(stderr, Name ": can only assemble a single array when providing a backup file.\n");
989 exit(1);
990 }
991 for (dv = devlist ; dv ; dv=dv->next) {
992 mddev_ident_t array_ident = conf_get_ident(dv->devname);
993 if (array_ident == NULL) {
994 fprintf(stderr, Name ": %s not identified in config file.\n",
995 dv->devname);
996 rv |= 1;
997 continue;
998 }
999 mdfd = open_mddev(dv->devname,
1000 array_ident->autof ?array_ident->autof : autof);
1001 if (mdfd < 0) {
1002 rv |= 1;
1003 continue;
1004 }
1005 rv |= Assemble(ss, dv->devname, mdfd, array_ident,
1006 NULL, backup_file,
1007 readonly, runstop, update, homehost, verbose-quiet, force);
1008 close(mdfd);
1009 }
1010 } else {
1011 mddev_ident_t array_list = conf_get_ident(NULL);
1012 mddev_dev_t devlist = conf_get_devs();
1013 int cnt = 0;
1014 if (devlist == NULL) {
1015 fprintf(stderr, Name ": No devices listed in conf file were found.\n");
1016 exit(1);
1017 }
1018 if (update) {
1019 fprintf(stderr, Name ": --update not meaningful with a --scan assembly.\n");
1020 exit(1);
1021 }
1022 if (backup_file) {
1023 fprintf(stderr, Name ": --backup_file not meaningful with a --scan assembly.\n");
1024 exit(1);
1025 }
1026 for (; array_list; array_list = array_list->next) {
1027 mdu_array_info_t array;
1028 mdfd = open_mddev(array_list->devname,
1029 array_list->autof ? array_list->autof : autof);
1030 if (mdfd < 0) {
1031 rv |= 1;
1032 continue;
1033 }
1034 if (ioctl(mdfd, GET_ARRAY_INFO, &array)>=0)
1035 /* already assembled, skip */
1036 ;
1037 else {
1038 rv |= Assemble(ss, array_list->devname, mdfd,
1039 array_list,
1040 NULL, NULL,
1041 readonly, runstop, NULL, homehost, verbose-quiet, force);
1042 if (rv == 0) cnt++;
1043 }
1044 close(mdfd);
1045 }
1046 if (homehost) {
1047 /* Maybe we can auto-assemble something.
1048 * Repeatedly call Assemble in auto-assmble mode
1049 * until it fails
1050 */
1051 int rv2;
1052 int acnt;
1053 ident.autof = autof;
1054 do {
1055 acnt = 0;
1056 do {
1057 rv2 = Assemble(ss, NULL, -1,
1058 &ident,
1059 NULL, NULL,
1060 readonly, runstop, NULL, homehost, verbose-quiet, force);
1061 if (rv2==0) {
1062 cnt++;
1063 acnt++;
1064 }
1065 if (rv2 == 1)
1066 /* found something so even though assembly failed we
1067 * want to avoid auto-updates
1068 */
1069 auto_update_home = 0;
1070 } while (rv2!=2);
1071 /* Incase there are stacked devices, we need to go around again */
1072 } while (acnt);
1073 if (cnt == 0 && auto_update_home && homehost) {
1074 /* Nothing found, maybe we need to bootstrap homehost info */
1075 do {
1076 acnt = 0;
1077 do {
1078 rv2 = Assemble(ss, NULL, -1,
1079 &ident,
1080 NULL, NULL,
1081 readonly, runstop, "homehost", homehost, verbose-quiet, force);
1082 if (rv2==0) {
1083 cnt++;
1084 acnt++;
1085 }
1086 } while (rv2!=2);
1087 /* Incase there are stacked devices, we need to go around again */
1088 } while (acnt);
1089 }
1090 if (cnt == 0 && rv == 0) {
1091 fprintf(stderr, Name ": No arrays found in config file or automatically\n");
1092 rv = 1;
1093 }
1094 } else if (cnt == 0 && rv == 0) {
1095 fprintf(stderr, Name ": No arrays found in config file\n");
1096 rv = 1;
1097 }
1098 }
1099 break;
1100 case BUILD:
1101 if (delay == 0) delay = DEFAULT_BITMAP_DELAY;
1102 if (write_behind && !bitmap_file) {
1103 fprintf(stderr, Name ": write-behind mode requires a bitmap.\n");
1104 rv = 1;
1105 break;
1106 }
1107
1108 if (bitmap_file) {
1109 if (strcmp(bitmap_file, "internal")==0) {
1110 fprintf(stderr, Name ": 'internal' bitmaps not supported with --build\n");
1111 rv |= 1;
1112 break;
1113 }
1114 }
1115 rv = Build(devlist->devname, mdfd, chunk, level, layout,
1116 raiddisks, devlist->next, assume_clean,
1117 bitmap_file, bitmap_chunk, write_behind, delay, verbose-quiet);
1118 break;
1119 case CREATE:
1120 if (delay == 0) delay = DEFAULT_BITMAP_DELAY;
1121 if (write_behind && !bitmap_file) {
1122 fprintf(stderr, Name ": write-behind mode requires a bitmap.\n");
1123 rv = 1;
1124 break;
1125 }
1126
1127 rv = Create(ss, devlist->devname, mdfd, chunk, level, layout, size<0 ? 0 : size,
1128 raiddisks, sparedisks, ident.name, homehost,
1129 devs_found-1, devlist->next, runstop, verbose-quiet, force, assume_clean,
1130 bitmap_file, bitmap_chunk, write_behind, delay);
1131 break;
1132 case MISC:
1133
1134 if (devmode == 'E') {
1135 if (devlist == NULL && !scan) {
1136 fprintf(stderr, Name ": No devices to examine\n");
1137 exit(2);
1138 }
1139 if (devlist == NULL)
1140 devlist = conf_get_devs();
1141 if (devlist == NULL) {
1142 fprintf(stderr, Name ": No devices listed in %s\n", configfile?configfile:DefaultConfFile);
1143 exit(1);
1144 }
1145 rv = Examine(devlist, scan?(verbose>1?0:verbose+1):brief, scan, SparcAdjust, ss, homehost);
1146 } else {
1147 if (devlist == NULL) {
1148 if (devmode=='D' && scan) {
1149 /* apply --detail to all devices in /proc/mdstat */
1150 struct mdstat_ent *ms = mdstat_read(0, 1);
1151 struct mdstat_ent *e;
1152 for (e=ms ; e ; e=e->next) {
1153 char *name = get_md_name(e->devnum);
1154
1155 if (!name) {
1156 fprintf(stderr, Name ": cannot find device file for %s\n",
1157 e->dev);
1158 continue;
1159 }
1160 rv |= Detail(name, verbose>1?0:verbose+1, test, homehost);
1161 put_md_name(name);
1162 }
1163 } else if (devmode == 'S' && scan) {
1164 /* apply --stop to all devices in /proc/mdstat */
1165 /* Due to possible stacking of devices, repeat until
1166 * nothing more can be stopped
1167 */
1168 int progress=1, err;
1169 int last = 0;
1170 do {
1171 struct mdstat_ent *ms = mdstat_read(0, 0);
1172 struct mdstat_ent *e;
1173
1174 if (!progress) last = 1;
1175 progress = 0; err = 0;
1176 for (e=ms ; e ; e=e->next) {
1177 char *name = get_md_name(e->devnum);
1178
1179 if (!name) {
1180 fprintf(stderr, Name ": cannot find device file for %s\n",
1181 e->dev);
1182 continue;
1183 }
1184 mdfd = open_mddev(name, 1);
1185 if (mdfd >= 0) {
1186 if (Manage_runstop(name, mdfd, -1, quiet?1:last?0:-1))
1187 err = 1;
1188 else
1189 progress = 1;
1190 close(mdfd);
1191 }
1192
1193 put_md_name(name);
1194 }
1195 } while (!last && err);
1196 if (err) rv |= 1;
1197 } else {
1198 fprintf(stderr, Name ": No devices given.\n");
1199 exit(2);
1200 }
1201 }
1202 for (dv=devlist ; dv; dv=dv->next) {
1203 switch(dv->disposition) {
1204 case 'D':
1205 rv |= Detail(dv->devname, brief?1+verbose:0, test, homehost); continue;
1206 case 'K': /* Zero superblock */
1207 rv |= Kill(dv->devname, force, quiet); continue;
1208 case 'Q':
1209 rv |= Query(dv->devname); continue;
1210 case 'X':
1211 rv |= ExamineBitmap(dv->devname, brief, ss); continue;
1212 }
1213 mdfd = open_mddev(dv->devname, 1);
1214 if (mdfd>=0) {
1215 switch(dv->disposition) {
1216 case 'R':
1217 rv |= Manage_runstop(dv->devname, mdfd, 1, quiet); break;
1218 case 'S':
1219 rv |= Manage_runstop(dv->devname, mdfd, -1, quiet); break;
1220 case 'o':
1221 rv |= Manage_ro(dv->devname, mdfd, 1); break;
1222 case 'w':
1223 rv |= Manage_ro(dv->devname, mdfd, -1); break;
1224 }
1225 close(mdfd);
1226 } else
1227 rv |= 1;
1228 }
1229 }
1230 break;
1231 case MONITOR:
1232 if (!devlist && !scan) {
1233 fprintf(stderr, Name ": Cannot monitor: need --scan or at least one device\n");
1234 rv = 1;
1235 break;
1236 }
1237 if (pidfile && !daemonise) {
1238 fprintf(stderr, Name ": Cannot write a pid file when not in daemon mode\n");
1239 rv = 1;
1240 break;
1241 }
1242 rv= Monitor(devlist, mailaddr, program,
1243 delay?delay:60, daemonise, scan, oneshot,
1244 dosyslog, test, pidfile);
1245 break;
1246
1247 case GROW:
1248 if (devs_found > 1) {
1249
1250 /* must be '-a'. */
1251 if (size >= 0 || raiddisks) {
1252 fprintf(stderr, Name ": --size, --raiddisks, and --add are exclusing in --grow mode\n");
1253 rv = 1;
1254 break;
1255 }
1256 for (dv=devlist->next; dv ; dv=dv->next) {
1257 rv = Grow_Add_device(devlist->devname, mdfd, dv->devname);
1258 if (rv)
1259 break;
1260 }
1261 } else if ((size >= 0) + (raiddisks != 0) + (layout != UnSet) + (bitmap_file != NULL)> 1) {
1262 fprintf(stderr, Name ": can change at most one of size, raiddisks, bitmap, and layout\n");
1263 rv = 1;
1264 break;
1265 } else if (layout != UnSet)
1266 rv = Manage_reconfig(devlist->devname, mdfd, layout);
1267 else if (size >= 0 || raiddisks)
1268 rv = Grow_reshape(devlist->devname, mdfd, quiet, backup_file,
1269 size, level, layout, chunk, raiddisks);
1270 else if (bitmap_file) {
1271 if (delay == 0) delay = DEFAULT_BITMAP_DELAY;
1272 rv = Grow_addbitmap(devlist->devname, mdfd, bitmap_file,
1273 bitmap_chunk, delay, write_behind, force);
1274 } else
1275 fprintf(stderr, Name ": no changes to --grow\n");
1276 break;
1277 }
1278 exit(rv);
1279 }
Unnamed repository; edit this file 'description' to name the repository.