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Make --zero-superblock work for version 1 superblocks.
[thirdparty/mdadm.git] / mdadm.c
1 /*
2 * mdadm - manage Linux "md" devices aka RAID arrays.
3 *
4 * Copyright (C) 2001-2002 Neil Brown <neilb@cse.unsw.edu.au>
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 async 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 *help_text;
44 char *c;
45 int rv;
46 int i;
47
48 int chunk = 0;
49 int size = -1;
50 int level = UnSet;
51 int layout = UnSet;
52 int raiddisks = 0;
53 int max_disks = MD_SB_DISKS;
54 int sparedisks = 0;
55 struct mddev_ident_s ident;
56 char *configfile = NULL;
57 char *cp;
58 char *update = NULL;
59 int scan = 0;
60 char devmode = 0;
61 int runstop = 0;
62 int readonly = 0;
63 int bitmap_fd = -1;
64 char *bitmap_file = NULL;
65 int bitmap_chunk = UnSet;
66 int SparcAdjust = 0;
67 mddev_dev_t devlist = NULL;
68 mddev_dev_t *devlistend = & devlist;
69 mddev_dev_t dv;
70 int devs_found = 0;
71 int verbose = 0;
72 int brief = 0;
73 int force = 0;
74 int test = 0;
75 int assume_clean = 0;
76 int autof = 0; /* -2 means create device based on name:
77 * if it ends mdN, then non-partitioned array N
78 * if it ends dN, then partitions array N
79 * -1 means create non-partitioned, choose N
80 * 1 or more to create partitioned
81 * If -1 or 1 and name is a 'standard' name, then
82 * insist on a match of type and number.
83 */
84
85 char *mailaddr = NULL;
86 char *program = NULL;
87 int delay = 0;
88 int daemonise = 0;
89 char *pidfile = NULL;
90 int oneshot = 0;
91 struct supertype *ss = NULL;
92
93 int copies;
94
95 int mdfd = -1;
96
97 srandom(time(0) ^ getpid());
98
99 ident.uuid_set=0;
100 ident.level = UnSet;
101 ident.raid_disks = UnSet;
102 ident.super_minor= UnSet;
103 ident.devices=0;
104 ident.spare_group = NULL;
105 ident.autof = 0;
106 ident.st = NULL;
107 ident.bitmap_fd = -1;
108
109 while ((option_index = -1) ,
110 (opt=getopt_long(argc, argv,
111 short_options, long_options,
112 &option_index)) != -1) {
113 int newmode = mode;
114 /* firstly, so mode-independant options */
115 switch(opt) {
116 case 'h':
117 help_text = Help;
118 if (option_index > 0 &&
119 strcmp(long_options[option_index].name, "help-options")==0)
120 help_text = OptionHelp;
121 else
122 switch (mode) {
123 case ASSEMBLE : help_text = Help_assemble; break;
124 case BUILD : help_text = Help_build; break;
125 case CREATE : help_text = Help_create; break;
126 case MANAGE : help_text = Help_manage; break;
127 case MISC : help_text = Help_misc; break;
128 case MONITOR : help_text = Help_monitor; break;
129 case GROW : help_text = Help_grow; break;
130 }
131 fputs(help_text,stderr);
132 exit(0);
133
134 case 'V':
135 fputs(Version, stderr);
136 exit(0);
137
138 case 'v': verbose = 1;
139 continue;
140
141 case 'b':
142 if (mode == ASSEMBLE || mode == BUILD || mode == CREATE || mode == GROW)
143 break; /* b means bitmap */
144 brief = 1;
145 continue;
146
147 case ':':
148 case '?':
149 fputs(Usage, stderr);
150 exit(2);
151 }
152 /* second, figure out the mode.
153 * Some options force the mode. Others
154 * set the mode if it isn't already
155 */
156
157 switch(opt) {
158 case '@': /* just incase they say --manage */
159 newmode = MANAGE; break;
160 case 'a':
161 case 'r':
162 case 'f':
163 if (!mode) newmode = MANAGE;
164 break;
165
166 case 'A': newmode = ASSEMBLE; break;
167 case 'B': newmode = BUILD; break;
168 case 'C': newmode = CREATE; break;
169 case 'F': newmode = MONITOR;break;
170 case 'G': newmode = GROW; break;
171
172 case '#':
173 case 'D':
174 case 'E':
175 case 'X':
176 case 'Q': newmode = MISC; break;
177 case 'R':
178 case 'S':
179 case 'o':
180 case 'w':
181 case 'K': if (!mode) newmode = MISC; break;
182 }
183 if (mode && newmode == mode) {
184 /* everybody happy ! */
185 } else if (mode && newmode != mode) {
186 /* not allowed.. */
187 fprintf(stderr, Name ": ");
188 if (option_index >= 0)
189 fprintf(stderr, "--%s", long_options[option_index].name);
190 else
191 fprintf(stderr, "-%c", opt);
192 fprintf(stderr, " would set mdadm mode to \"%s\", but it is already set to \"%s\".\n",
193 map_num(modes, newmode),
194 map_num(modes, mode));
195 exit(2);
196 } else if (!mode && newmode) {
197 mode = newmode;
198 } else {
199 /* special case of -c --help */
200 if (opt == 'c' &&
201 ( strncmp(optarg, "--h", 3)==0 ||
202 strncmp(optarg, "-h", 2)==0)) {
203 fputs(Help_config, stderr);
204 exit(0);
205 }
206
207 /* If first option is a device, don't force the mode yet */
208 if (opt == 1) {
209 if (devs_found == 0) {
210 dv = malloc(sizeof(*dv));
211 if (dv == NULL) {
212 fprintf(stderr, Name ": malloc failed\n");
213 exit(3);
214 }
215 dv->devname = optarg;
216 dv->disposition = devmode;
217 dv->next = NULL;
218 *devlistend = dv;
219 devlistend = &dv->next;
220
221 devs_found++;
222 continue;
223 }
224 /* No mode yet, and this is the second device ... */
225 fprintf(stderr, Name ": An option must be given to set the mode before a second device is listed\n");
226 exit(2);
227 }
228 if (option_index >= 0)
229 fprintf(stderr, Name ": --%s", long_options[option_index].name);
230 else
231 fprintf(stderr, Name ": -%c", opt);
232 fprintf(stderr, " does not set the mode, and so cannot be the first option.\n");
233 exit(2);
234 }
235
236 /* if we just set the mode, then done */
237 switch(opt) {
238 case '@':
239 case '#':
240 case 'A':
241 case 'B':
242 case 'C':
243 case 'F':
244 case 'G':
245 continue;
246 }
247 if (opt == 1) {
248 /* an undecorated option - must be a device name.
249 */
250 if (devs_found > 0 && mode == '@' && !devmode) {
251 fprintf(stderr, Name ": Must give one of -a/-r/-f for subsequent devices at %s\n", optarg);
252 exit(2);
253 }
254 if (devs_found > 0 && mode == 'G' && !devmode) {
255 fprintf(stderr, Name ": Must give one of -a for devices do add: %s\n", optarg);
256 exit(2);
257 }
258 dv = malloc(sizeof(*dv));
259 if (dv == NULL) {
260 fprintf(stderr, Name ": malloc failed\n");
261 exit(3);
262 }
263 dv->devname = optarg;
264 dv->disposition = devmode;
265 dv->next = NULL;
266 *devlistend = dv;
267 devlistend = &dv->next;
268
269 devs_found++;
270 continue;
271 }
272
273 /* We've got a mode, and opt is now something else which
274 * could depend on the mode */
275 #define O(a,b) ((a<<8)|b)
276 switch (O(mode,opt)) {
277 case O(CREATE,'c'):
278 case O(BUILD,'c'): /* chunk or rounding */
279 if (chunk) {
280 fprintf(stderr, Name ": chunk/rounding may only be specified once. "
281 "Second value is %s.\n", optarg);
282 exit(2);
283 }
284 chunk = strtol(optarg, &c, 10);
285 if (!optarg[0] || *c || chunk<4 || ((chunk-1)&chunk)) {
286 fprintf(stderr, Name ": invalid chunk/rounding value: %s\n",
287 optarg);
288 exit(2);
289 }
290 continue;
291
292 case O(CREATE,'e'):
293 case O(ASSEMBLE,'e'):
294 case O(MISC,'e'): /* set metadata (superblock) information */
295 if (ss) {
296 fprintf(stderr, Name ": metadata information already given\n");
297 exit(2);
298 }
299 for(i=0; !ss && superlist[i]; i++)
300 ss = superlist[i]->match_metadata_desc(optarg);
301
302 if (!ss) {
303 fprintf(stderr, Name ": unrecognised metadata identifier: %s\n", optarg);
304 exit(2);
305 }
306 max_disks = ss->max_devs;
307 continue;
308
309 case O(GROW,'z'):
310 case O(CREATE,'z'): /* size */
311 if (size >= 0) {
312 fprintf(stderr, Name ": size may only be specified once. "
313 "Second value is %s.\n", optarg);
314 exit(2);
315 }
316 if (strcmp(optarg, "max")==0)
317 size = 0;
318 else {
319 size = strtol(optarg, &c, 10);
320 if (!optarg[0] || *c || size < 4) {
321 fprintf(stderr, Name ": invalid size: %s\n",
322 optarg);
323 exit(2);
324 }
325 }
326 continue;
327
328 case O(GROW,'l'): /* hack - needed to understand layout */
329 case O(CREATE,'l'):
330 case O(BUILD,'l'): /* set raid level*/
331 if (level != UnSet) {
332 fprintf(stderr, Name ": raid level may only be set once. "
333 "Second value is %s.\n", optarg);
334 exit(2);
335 }
336 level = map_name(pers, optarg);
337 if (level == UnSet) {
338 fprintf(stderr, Name ": invalid raid level: %s\n",
339 optarg);
340 exit(2);
341 }
342 if (level != 0 && level != -1 && level != 1 && level != -4 && level != -5 && mode == BUILD) {
343 fprintf(stderr, Name ": Raid level %s not permitted with --build.\n",
344 optarg);
345 exit(2);
346 }
347 if (sparedisks > 0 && level < 1 && level >= -1) {
348 fprintf(stderr, Name ": raid level %s is incompatible with spare-devices setting.\n",
349 optarg);
350 exit(2);
351 }
352 ident.level = level;
353 continue;
354
355 case O(CREATE,'p'): /* raid5 layout */
356 case O(BUILD,'p'): /* faulty layout */
357 case O(GROW, 'p'): /* faulty reconfig */
358 if (layout != UnSet) {
359 fprintf(stderr,Name ": layout may only be sent once. "
360 "Second value was %s\n", optarg);
361 exit(2);
362 }
363 switch(level) {
364 default:
365 fprintf(stderr, Name ": layout not meaningful for %s arrays.\n",
366 map_num(pers, level));
367 exit(2);
368 case UnSet:
369 fprintf(stderr, Name ": raid level must be given before layout.\n");
370 exit(2);
371
372 case 5:
373 case 6:
374 layout = map_name(r5layout, optarg);
375 if (layout==UnSet) {
376 fprintf(stderr, Name ": layout %s not understood for raid5.\n",
377 optarg);
378 exit(2);
379 }
380 break;
381
382 case 10:
383 /* 'f' or 'n' followed by a number <= raid_disks */
384 if ((optarg[0] != 'n' && optarg[0] != 'f') ||
385 (copies = strtoul(optarg+1, &cp, 10)) < 1 ||
386 copies > 200 ||
387 *cp) {
388 fprintf(stderr, Name ": layout for raid10 must be 'nNN' or 'fNN' where NN is a number, not %s\n", optarg);
389 exit(2);
390 }
391 if (optarg[0] == 'n')
392 layout = 256 + copies;
393 else
394 layout = 1 + (copies<<8);
395 break;
396 case -5: /* Faulty
397 * modeNNN
398 */
399
400 {
401 int ln = strcspn(optarg, "0123456789");
402 char *m = strdup(optarg);
403 int mode;
404 m[ln] = 0;
405 mode = map_name(faultylayout, m);
406 if (mode == UnSet) {
407 fprintf(stderr, Name ": layout %s not understood for faulty.\n",
408 optarg);
409 exit(2);
410 }
411 layout = mode | (atoi(optarg+ln)<< ModeShift);
412 }
413 }
414 continue;
415
416 case O(CREATE,3):
417 case O(BUILD,3): /* assume clean */
418 assume_clean = 1;
419 continue;
420
421 case O(GROW,'n'):
422 case O(CREATE,'n'):
423 case O(BUILD,'n'): /* number of raid disks */
424 if (raiddisks) {
425 fprintf(stderr, Name ": raid-devices set twice: %d and %s\n",
426 raiddisks, optarg);
427 exit(2);
428 }
429 raiddisks = strtol(optarg, &c, 10);
430 if (!optarg[0] || *c || raiddisks<=0 || raiddisks > max_disks) {
431 fprintf(stderr, Name ": invalid number of raid devices: %s\n",
432 optarg);
433 exit(2);
434 }
435 if (raiddisks == 1 && !force && level != -5) {
436 fprintf(stderr, Name ": '1' is an unusual number of drives for an array, so it is probably\n"
437 " a mistake. If you really mean it you will need to specify --force before\n"
438 " setting the number of drives.\n");
439 exit(2);
440 }
441 ident.raid_disks = raiddisks;
442 continue;
443
444 case O(CREATE,'x'): /* number of spare (eXtra) discs */
445 if (sparedisks) {
446 fprintf(stderr,Name ": spare-devices set twice: %d and %s\n",
447 sparedisks, optarg);
448 exit(2);
449 }
450 if (level != UnSet && level <= 0 && level >= -1) {
451 fprintf(stderr, Name ": spare-devices setting is incompatible with raid level %d\n",
452 level);
453 exit(2);
454 }
455 sparedisks = strtol(optarg, &c, 10);
456 if (!optarg[0] || *c || sparedisks < 0 || sparedisks > max_disks - raiddisks) {
457 fprintf(stderr, Name ": invalid number of spare-devices: %s\n",
458 optarg);
459 exit(2);
460 }
461 continue;
462
463 case O(CREATE,'a'):
464 case O(BUILD,'a'):
465 case O(ASSEMBLE,'a'): /* auto-creation of device node */
466 if (optarg == NULL)
467 autof = -2;
468 else if (strcasecmp(optarg,"no")==0)
469 autof = 0;
470 else if (strcasecmp(optarg,"yes")==0)
471 autof = -2;
472 else if (strcasecmp(optarg,"md")==0)
473 autof = -1;
474 else {
475 /* There might be digits, and maybe a hypen, at the end */
476 char *e = optarg + strlen(optarg);
477 int num = 4;
478 int len;
479 while (e > optarg && isdigit(e[-1]))
480 e--;
481 if (*e) {
482 num = atoi(e);
483 if (num <= 0) num = 1;
484 }
485 if (e > optarg && e[-1] == '-')
486 e--;
487 len = e - optarg;
488 if ((len == 3 && strncasecmp(optarg,"mdp",3)==0) ||
489 (len == 1 && strncasecmp(optarg,"p",1)==0) ||
490 (len >= 4 && strncasecmp(optarg,"part",4)==0))
491 autof = num;
492 else {
493 fprintf(stderr, Name ": --auto flag arg of \"%s\" unrecognised: use no,yes,md,mdp,part\n"
494 " optionally followed by a number.\n",
495 optarg);
496 exit(2);
497 }
498 }
499 continue;
500
501 case O(BUILD,'f'): /* force honouring '-n 1' */
502 case O(CREATE,'f'): /* force honouring of device list */
503 case O(ASSEMBLE,'f'): /* force assembly */
504 case O(MISC,'f'): /* force zero */
505 force=1;
506 continue;
507
508 /* now for the Assemble options */
509 case O(ASSEMBLE,'u'): /* uuid of array */
510 if (ident.uuid_set) {
511 fprintf(stderr, Name ": uuid cannot be set twice. "
512 "Second value %s.\n", optarg);
513 exit(2);
514 }
515 if (parse_uuid(optarg, ident.uuid))
516 ident.uuid_set = 1;
517 else {
518 fprintf(stderr,Name ": Bad uuid: %s\n", optarg);
519 exit(2);
520 }
521 continue;
522
523 case O(ASSEMBLE,'m'): /* super-minor for array */
524 if (ident.super_minor != UnSet) {
525 fprintf(stderr, Name ": super-minor cannot be set twice. "
526 "Second value: %s.\n", optarg);
527 exit(2);
528 }
529 if (strcmp(optarg, "dev")==0)
530 ident.super_minor = -2;
531 else {
532 ident.super_minor = strtoul(optarg, &cp, 10);
533 if (!optarg[0] || *cp) {
534 fprintf(stderr, Name ": Bad super-minor number: %s.\n", optarg);
535 exit(2);
536 }
537 }
538 continue;
539
540 case O(ASSEMBLE,'U'): /* update the superblock */
541 if (update) {
542 fprintf(stderr, Name ": Can only update one aspect of superblock, both %s and %s given.\n",
543 update, optarg);
544 exit(2);
545 }
546 update = optarg;
547 if (strcmp(update, "sparc2.2")==0)
548 continue;
549 if (strcmp(update, "super-minor") == 0)
550 continue;
551 if (strcmp(update, "summaries")==0)
552 continue;
553 if (strcmp(update, "resync")==0)
554 continue;
555 fprintf(stderr, Name ": '--update %s' invalid. Only 'sparc2.2', 'super-minor', 'resync' or 'summaries' supported\n",update);
556 exit(2);
557
558 case O(ASSEMBLE,'c'): /* config file */
559 case O(MISC, 'c'):
560 case O(MONITOR,'c'):
561 if (configfile) {
562 fprintf(stderr, Name ": configfile cannot be set twice. "
563 "Second value is %s.\n", optarg);
564 exit(2);
565 }
566 configfile = optarg;
567 /* FIXME possibly check that config file exists. Even parse it */
568 continue;
569 case O(ASSEMBLE,'s'): /* scan */
570 case O(MISC,'s'):
571 case O(MONITOR,'s'):
572 scan = 1;
573 continue;
574
575 case O(MONITOR,'m'): /* mail address */
576 if (mailaddr)
577 fprintf(stderr, Name ": only specify one mailaddress. %s ignored.\n",
578 optarg);
579 else
580 mailaddr = optarg;
581 continue;
582
583 case O(MONITOR,'p'): /* alert program */
584 if (program)
585 fprintf(stderr, Name ": only specify one alter program. %s ignored.\n",
586 optarg);
587 else
588 program = optarg;
589 continue;
590
591 case O(MONITOR,'d'): /* delay in seconds */
592 case O(GROW, 'd'):
593 case O(BUILD,'d'): /* delay for bitmap updates */
594 case O(CREATE,'d'):
595 if (delay)
596 fprintf(stderr, Name ": only specify delay once. %s ignored.\n",
597 optarg);
598 else {
599 delay = strtol(optarg, &c, 10);
600 if (!optarg[0] || *c || delay<1) {
601 fprintf(stderr, Name ": invalid delay: %s\n",
602 optarg);
603 exit(2);
604 }
605 }
606 continue;
607 case O(MONITOR,'f'): /* daemonise */
608 daemonise = 1;
609 continue;
610 case O(MONITOR,'i'): /* pid */
611 if (pidfile)
612 fprintf(stderr, Name ": only specify one pid file. %s ignored.\n",
613 optarg);
614 else
615 pidfile = optarg;
616 continue;
617 case O(MONITOR,'1'): /* oneshot */
618 oneshot = 1;
619 continue;
620 case O(MONITOR,'t'): /* test */
621 test = 1;
622 continue;
623
624 /* now the general management options. Some are applicable
625 * to other modes. None have arguments.
626 */
627 case O(GROW,'a'):
628 case O(MANAGE,'a'): /* add a drive */
629 devmode = 'a';
630 continue;
631 case O(MANAGE,'r'): /* remove a drive */
632 devmode = 'r';
633 continue;
634 case O(MANAGE,'f'): /* set faulty */
635 devmode = 'f';
636 continue;
637 case O(MANAGE,'R'):
638 case O(ASSEMBLE,'R'):
639 case O(BUILD,'R'):
640 case O(CREATE,'R'): /* Run the array */
641 if (runstop < 0) {
642 fprintf(stderr, Name ": Cannot both Stop and Run an array\n");
643 exit(2);
644 }
645 runstop = 1;
646 continue;
647 case O(MANAGE,'S'):
648 if (runstop > 0) {
649 fprintf(stderr, Name ": Cannot both Run and Stop an array\n");
650 exit(2);
651 }
652 runstop = -1;
653 continue;
654
655 case O(MANAGE,'o'):
656 if (readonly < 0) {
657 fprintf(stderr, Name ": Cannot have both readonly and readwrite\n");
658 exit(2);
659 }
660 readonly = 1;
661 continue;
662 case O(MANAGE,'w'):
663 if (readonly > 0) {
664 fprintf(stderr, Name ": Cannot have both readwrite and readonly.\n");
665 exit(2);
666 }
667 readonly = -1;
668 continue;
669
670 case O(MISC,'Q'):
671 case O(MISC,'D'):
672 case O(MISC,'E'):
673 case O(MISC,'K'):
674 case O(MISC,'R'):
675 case O(MISC,'S'):
676 case O(MISC,'X'):
677 case O(MISC,'o'):
678 case O(MISC,'w'):
679 if (devmode && devmode != opt &&
680 (devmode == 'E' || (opt == 'E' && devmode != 'Q'))) {
681 fprintf(stderr, Name ": --examine/-E cannot be given with -%c\n",
682 devmode =='E'?opt:devmode);
683 exit(2);
684 }
685 devmode = opt;
686 continue;
687 case O(MISC,'t'):
688 test = 1;
689 continue;
690
691 case O(MISC, 22):
692 if (devmode != 'E') {
693 fprintf(stderr, Name ": --sparc2.2 only allowed with --examine\n");
694 exit(2);
695 }
696 SparcAdjust = 1;
697 continue;
698
699 case O(ASSEMBLE,'b'): /* here we simply set the bitmap file */
700 if (!optarg) {
701 fprintf(stderr, Name ": bitmap file needed with -b in --assemble mode\n");
702 exit(2);
703 }
704 if (strcmp(optarg, "internal")==0) {
705 fprintf(stderr, Name ": there is no need to specify --bitmap when assembling arrays with internal bitmaps\n");
706 continue;
707 }
708 bitmap_fd = open(optarg, O_RDWR);
709 if (!*optarg || bitmap_fd < 0) {
710 fprintf(stderr, Name ": cannot open bitmap file %s: %s\n", optarg, strerror(errno));
711 exit(2);
712 }
713 ident.bitmap_fd = bitmap_fd; /* for Assemble */
714 continue;
715
716 case O(GROW,'b'):
717 case O(BUILD,'b'):
718 case O(CREATE,'b'): /* here we create the bitmap */
719 bitmap_file = optarg;
720 continue;
721
722 case O(GROW,4):
723 case O(BUILD,4):
724 case O(CREATE,4): /* bitmap chunksize */
725 bitmap_chunk = strtol(optarg, &c, 10);
726 if (!optarg[0] || *c || bitmap_chunk < 0 ||
727 bitmap_chunk & (bitmap_chunk - 1)) {
728 fprintf(stderr, Name ": invalid bitmap chunksize: %s\n",
729 optarg);
730 exit(2);
731 }
732 /* convert K to B, chunk of 0K means 512B */
733 bitmap_chunk = bitmap_chunk ? bitmap_chunk * 1024 : 512;
734 continue;
735 }
736 /* We have now processed all the valid options. Anything else is
737 * an error
738 */
739 fprintf(stderr, Name ": option %c not valid in %s mode\n",
740 opt, map_num(modes, mode));
741 exit(2);
742
743 }
744
745 if (!mode && devs_found) {
746 mode = MISC;
747 devmode = 'Q';
748 if (devlist->disposition == 0)
749 devlist->disposition = devmode;
750 }
751 if (!mode) {
752 fputs(Usage, stderr);
753 exit(2);
754 }
755 /* Ok, got the option parsing out of the way
756 * hopefully it's mostly right but there might be some stuff
757 * missing
758 *
759 * That is mosty checked in the per-mode stuff but...
760 *
761 * For @,B,C and A without -s, the first device listed must be an md device
762 * we check that here and open it.
763 */
764
765 if (mode==MANAGE || mode == BUILD || mode == CREATE || mode == GROW ||
766 (mode == ASSEMBLE && ! scan)) {
767 if (devs_found < 1) {
768 fprintf(stderr, Name ": an md device must be given in this mode\n");
769 exit(2);
770 }
771 if ((int)ident.super_minor == -2 && autof) {
772 fprintf(stderr, Name ": --super-minor=dev is incompatible with --auto\n");
773 exit(2);
774 }
775 mdfd = open_mddev(devlist->devname, autof);
776 if (mdfd < 0)
777 exit(1);
778 if ((int)ident.super_minor == -2) {
779 struct stat stb;
780 fstat(mdfd, &stb);
781 ident.super_minor = minor(stb.st_rdev);
782 }
783 }
784
785
786 rv = 0;
787 switch(mode) {
788 case MANAGE:
789 /* readonly, add/remove, readwrite, runstop */
790 if (readonly>0)
791 rv = Manage_ro(devlist->devname, mdfd, readonly);
792 if (!rv && devs_found>1)
793 rv = Manage_subdevs(devlist->devname, mdfd,
794 devlist->next);
795 if (!rv && readonly < 0)
796 rv = Manage_ro(devlist->devname, mdfd, readonly);
797 if (!rv && runstop)
798 rv = Manage_runstop(devlist->devname, mdfd, runstop);
799 break;
800 case ASSEMBLE:
801 if (devs_found == 1 && ident.uuid_set == 0 &&
802 ident.super_minor == UnSet && !scan ) {
803 /* Only a device has been given, so get details from config file */
804 mddev_ident_t array_ident = conf_get_ident(configfile, devlist->devname);
805 if (array_ident == NULL) {
806 fprintf(stderr, Name ": %s not identified in config file.\n",
807 devlist->devname);
808 rv |= 1;
809 } else {
810 mdfd = open_mddev(devlist->devname, array_ident->autof);
811 if (mdfd < 0)
812 rv |= 1;
813 else {
814 rv |= Assemble(ss, devlist->devname, mdfd, array_ident, configfile,
815 NULL,
816 readonly, runstop, update, verbose, force);
817 close(mdfd);
818 }
819 }
820 } else if (!scan)
821 rv = Assemble(ss, devlist->devname, mdfd, &ident, configfile,
822 devlist->next,
823 readonly, runstop, update, verbose, force);
824 else if (devs_found>0) {
825 if (update && devs_found > 1) {
826 fprintf(stderr, Name ": can only update a single array at a time\n");
827 exit(1);
828 }
829 for (dv = devlist ; dv ; dv=dv->next) {
830 mddev_ident_t array_ident = conf_get_ident(configfile, dv->devname);
831 if (array_ident == NULL) {
832 fprintf(stderr, Name ": %s not identified in config file.\n",
833 dv->devname);
834 rv |= 1;
835 continue;
836 }
837 mdfd = open_mddev(dv->devname, array_ident->autof);
838 if (mdfd < 0) {
839 rv |= 1;
840 continue;
841 }
842 rv |= Assemble(ss, dv->devname, mdfd, array_ident, configfile,
843 NULL,
844 readonly, runstop, update, verbose, force);
845 close(mdfd);
846 }
847 } else {
848 mddev_ident_t array_list = conf_get_ident(configfile, NULL);
849 if (!array_list) {
850 fprintf(stderr, Name ": No arrays found in config file\n");
851 rv = 1;
852 } else
853 for (; array_list; array_list = array_list->next) {
854 mdu_array_info_t array;
855 mdfd = open_mddev(array_list->devname, array_list->autof);
856 if (mdfd < 0) {
857 rv |= 1;
858 continue;
859 }
860 if (ioctl(mdfd, GET_ARRAY_INFO, &array)>=0)
861 /* already assembled, skip */
862 ;
863 else
864 rv |= Assemble(ss, array_list->devname, mdfd,
865 array_list, configfile,
866 NULL,
867 readonly, runstop, NULL, verbose, force);
868 close(mdfd);
869 }
870 }
871 break;
872 case BUILD:
873 if (bitmap_chunk == UnSet) bitmap_chunk = DEFAULT_BITMAP_CHUNK;
874 if (delay == 0) delay = DEFAULT_BITMAP_DELAY;
875 if (bitmap_file) {
876 if (strcmp(bitmap_file, "internal")==0) {
877 fprintf(stderr, Name ": 'internal' bitmaps not supported with --build\n");
878 rv |= 1;
879 break;
880 }
881 bitmap_fd = open(bitmap_file, O_RDWR,0);
882 if (bitmap_fd < 0 && errno != ENOENT) {
883 perror(Name ": cannot create bitmap file");
884 rv |= 1;
885 break;
886 }
887 if (bitmap_fd < 0) {
888 bitmap_fd = CreateBitmap(bitmap_file, force, NULL,
889 bitmap_chunk, delay, size);
890 }
891 }
892 rv = Build(devlist->devname, mdfd, chunk, level, layout,
893 raiddisks, devlist->next, assume_clean,
894 bitmap_file, bitmap_chunk, delay);
895 break;
896 case CREATE:
897 if (delay == 0) delay = DEFAULT_BITMAP_DELAY;
898 if (ss == NULL) {
899 for(i=0; !ss && superlist[i]; i++)
900 ss = superlist[i]->match_metadata_desc("default");
901 }
902 if (!ss) {
903 fprintf(stderr, Name ": internal error - no default metadata style\n");
904 exit(2);
905 }
906
907 rv = Create(ss, devlist->devname, mdfd, chunk, level, layout, size<0 ? 0 : size,
908 raiddisks, sparedisks,
909 devs_found-1, devlist->next, runstop, verbose, force,
910 bitmap_file, bitmap_chunk, delay);
911 break;
912 case MISC:
913
914 if (devmode == 'E') {
915 if (devlist == NULL && !scan) {
916 fprintf(stderr, Name ": No devices to examine\n");
917 exit(2);
918 }
919 if (devlist == NULL)
920 devlist = conf_get_devs(configfile);
921 if (devlist == NULL) {
922 fprintf(stderr, Name ": No devices listed in %s\n", configfile?configfile:DefaultConfFile);
923 exit(1);
924 }
925 rv = Examine(devlist, scan?!verbose:brief, scan, SparcAdjust, ss);
926 } else {
927 if (devlist == NULL) {
928 if ((devmode == 'S' ||devmode=='D') && scan) {
929 /* apply to all devices in /proc/mdstat */
930 struct mdstat_ent *ms = mdstat_read(0);
931 struct mdstat_ent *e;
932 if (devmode == 'S') {
933 /* reverse order so that arrays made of arrays are stopped properly */
934 struct mdstat_ent *sm = NULL;
935 while ((e=ms) != NULL) {
936 ms = e->next;
937 e->next = sm;
938 sm = e;
939 }
940 ms = sm;
941 }
942 for (e=ms ; e ; e=e->next) {
943 char *name = get_md_name(e->devnum);
944
945 if (!name) {
946 fprintf(stderr, Name ": cannot find device file for %s\n",
947 e->dev);
948 continue;
949 }
950 if (devmode == 'D')
951 rv |= Detail(name, !verbose, test);
952 else if (devmode=='S') {
953 mdfd = open_mddev(name, 0);
954 if (mdfd >= 0) {
955 rv |= Manage_runstop(name, mdfd, -1);
956 close(mdfd);
957 }
958 }
959 put_md_name(name);
960 }
961 } else {
962 fprintf(stderr, Name ": No devices given.\n");
963 exit(2);
964 }
965 }
966 for (dv=devlist ; dv; dv=dv->next) {
967 switch(dv->disposition) {
968 case 'D':
969 rv |= Detail(dv->devname, brief, test); continue;
970 case 'K': /* Zero superblock */
971 rv |= Kill(dv->devname, force); continue;
972 case 'Q':
973 rv |= Query(dv->devname); continue;
974 case 'X':
975 rv |= ExamineBitmap(dv->devname, brief, ss); continue;
976 }
977 mdfd = open_mddev(dv->devname, 0);
978 if (mdfd>=0) {
979 switch(dv->disposition) {
980 case 'R':
981 rv |= Manage_runstop(dv->devname, mdfd, 1); break;
982 case 'S':
983 rv |= Manage_runstop(dv->devname, mdfd, -1); break;
984 case 'o':
985 rv |= Manage_ro(dv->devname, mdfd, 1); break;
986 case 'w':
987 rv |= Manage_ro(dv->devname, mdfd, -1); break;
988 }
989 close(mdfd);
990 }
991 }
992 }
993 break;
994 case MONITOR:
995 if (!devlist && !scan) {
996 fprintf(stderr, Name ": Cannot monitor: need --scan or at least one device\n");
997 rv = 1;
998 break;
999 }
1000 if (pidfile && !daemonise) {
1001 fprintf(stderr, Name ": Cannot write a pid file when not in daemon mode\n");
1002 rv = 1;
1003 break;
1004 }
1005 rv= Monitor(devlist, mailaddr, program,
1006 delay?delay:60, daemonise, scan, oneshot, configfile, test, pidfile);
1007 break;
1008
1009 case GROW:
1010 if (devs_found > 1) {
1011
1012 /* must be '-a'. */
1013 if (size >= 0 || raiddisks) {
1014 fprintf(stderr, Name ": --size, --raiddisks, and --add are exclusing in --grow mode\n");
1015 rv = 1;
1016 break;
1017 }
1018 for (dv=devlist->next; dv ; dv=dv->next) {
1019 rv = Grow_Add_device(devlist->devname, mdfd, dv->devname);
1020 if (rv)
1021 break;
1022 }
1023 } else if ((size >= 0) + (raiddisks != 0) + (layout != UnSet) + (bitmap_file != NULL)> 1) {
1024 fprintf(stderr, Name ": can change at most one of size, raiddisks, bitmap, and layout\n");
1025 rv = 1;
1026 break;
1027 } else if (layout != UnSet)
1028 rv = Manage_reconfig(devlist->devname, mdfd, layout);
1029 else if (size >= 0 || raiddisks)
1030 rv = Manage_resize(devlist->devname, mdfd, size, raiddisks);
1031 else if (bitmap_file) {
1032 if (delay == 0) delay = DEFAULT_BITMAP_DELAY;
1033 rv = Grow_addbitmap(devlist->devname, mdfd, bitmap_file,
1034 bitmap_chunk, delay);
1035 } else
1036 fprintf(stderr, Name ": no changes to --grow\n");
1037 break;
1038 }
1039 exit(rv);
1040 }
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