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mdadm-1.6.0
[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
30 #include "mdadm.h"
31 #include "md_p.h"
32 #include <ctype.h>
33
34
35 void make_parts(char *dev, int cnt)
36 {
37 /* make 'cnt' partition devices for 'dev'
38 * We use the major/minor from dev and add 1..cnt
39 * If dev ends with a digit, we add "_p%d" else "%d"
40 * If the name exists, we use it's owner/mode,
41 * else that of dev
42 */
43 struct stat stb;
44 int major, minor;
45 int i;
46 char *name = malloc(strlen(dev) + 20);
47 int dig = isdigit(dev[strlen(dev)-1]);
48
49 if (stat(dev, &stb)!= 0)
50 return;
51 if (!S_ISBLK(stb.st_mode))
52 return;
53 major = MAJOR(stb.st_rdev);
54 minor = MINOR(stb.st_rdev);
55 for (i=1; i <= cnt ; i++) {
56 struct stat stb2;
57 sprintf(name, "%s%s%d", dev, dig?"_p":"", i);
58 if (stat(name, &stb2)==0) {
59 if (!S_ISBLK(stb2.st_mode))
60 continue;
61 if (stb2.st_rdev == MKDEV(major, minor+i))
62 continue;
63 unlink(name);
64 } else {
65 stb2 = stb;
66 }
67 mknod(name, S_IFBLK | 0600, MKDEV(major, minor+i));
68 chown(name, stb2.st_uid, stb2.st_gid);
69 chmod(name, stb2.st_mode & 07777);
70 }
71 }
72
73 /*
74 * Open a given md device, and check that it really is one.
75 * If 'autof' is given, then we need to create, or recreate, the md device.
76 * If the name already exists, and is not a block device, we fail.
77 * If it exists and is not an md device, is not the right type (partitioned or not),
78 * or is currently in-use, we remove the device, but remember the owner and mode.
79 * If it now doesn't exist, we find a few md array and create the device.
80 * Default ownership is user=0, group=0 perm=0600
81 */
82 int open_mddev(char *dev, int autof)
83 {
84 int mdfd;
85 struct stat stb;
86 int major = MD_MAJOR;
87 int minor;
88 int must_remove = 0;
89 struct mdstat_ent *mdlist;
90 int num;
91
92 if (autof) {
93 /* autof is set, so we need to check that the name is ok,
94 * and possibly create one if not
95 */
96 stb.st_mode = 0;
97 if (lstat(dev, &stb)==0 && ! S_ISBLK(stb.st_mode)) {
98 fprintf(stderr, Name ": %s is not a block device.\n",
99 dev);
100 return -1;
101 }
102 /* check major number is correct */
103 if (autof>0)
104 major = get_mdp_major();
105 if (stb.st_mode && MAJOR(stb.st_rdev) != major)
106 must_remove = 1;
107 if (stb.st_mode && !must_remove) {
108 mdu_array_info_t array;
109 /* looks ok, see if it is available */
110 mdfd = open(dev, O_RDWR, 0);
111 if (mdfd < 0) {
112 fprintf(stderr, Name ": error opening %s: %s\n",
113 dev, strerror(errno));
114 return -1;
115 } else if (md_get_version(mdfd) <= 0) {
116 fprintf(stderr, Name ": %s does not appear to be an md device\n",
117 dev);
118 close(mdfd);
119 return -1;
120 }
121 if (ioctl(mdfd, GET_ARRAY_INFO, &array)==0) {
122 /* already active */
123 must_remove = 1;
124 close(mdfd);
125 } else {
126 if (autof > 0)
127 make_parts(dev, autof);
128 return mdfd;
129 }
130 }
131 /* Ok, need to find a minor that is not in use.
132 * Easiest to read /proc/mdstat, and hunt through for
133 * an unused number
134 */
135 mdlist = mdstat_read(0);
136 for (num= (autof>0)?-1:0 ; ; num+= (autof>2)?-1:1) {
137 struct mdstat_ent *me;
138 for (me=mdlist; me; me=me->next)
139 if (me->devnum == num)
140 break;
141 if (!me) {
142 /* doesn't exist if mdstat.
143 * make sure it is new to /dev too
144 */
145 char *dn;
146 if (autof > 0)
147 minor = (-1-num) << MdpMinorShift;
148 else
149 minor = num;
150 dn = map_dev(major,minor);
151 if (dn==NULL || is_standard(dn)) {
152 /* this number only used by a 'standard' name,
153 * so it is safe to use
154 */
155 break;
156 }
157 }
158 }
159 /* 'num' is the number to use, >=0 for md, <0 for mdp */
160 if (must_remove) {
161 /* never remove a device name that ends /mdNN or /dNN,
162 * that would be confusing
163 */
164 if (is_standard(dev)) {
165 fprintf(stderr, Name ": --auto refusing to remove %s as it looks like a standard name.\n",
166 dev);
167 return -1;
168 }
169 unlink(dev);
170 }
171
172 if (mknod(dev, S_IFBLK|0600, MKDEV(major, minor))!= 0) {
173 fprintf(stderr, Name ": failed to create %s\n", dev);
174 return -1;
175 }
176 if (must_remove) {
177 chown(dev, stb.st_uid, stb.st_gid);
178 chmod(dev, stb.st_mode & 07777);
179 }
180 make_parts(dev,autof);
181 }
182 mdfd = open(dev, O_RDWR, 0);
183 if (mdfd < 0)
184 fprintf(stderr, Name ": error opening %s: %s\n",
185 dev, strerror(errno));
186 else if (md_get_version(mdfd) <= 0) {
187 fprintf(stderr, Name ": %s does not appear to be an md device\n",
188 dev);
189 close(mdfd);
190 mdfd = -1;
191 }
192 return mdfd;
193 }
194
195
196
197 int main(int argc, char *argv[])
198 {
199 int mode = 0;
200 int opt;
201 int option_index;
202 char *help_text;
203 char *c;
204 int rv;
205
206 int chunk = 0;
207 int size = -1;
208 int level = UnSet;
209 int layout = UnSet;
210 int raiddisks = 0;
211 int sparedisks = 0;
212 struct mddev_ident_s ident;
213 char *configfile = NULL;
214 char *cp;
215 char *update = NULL;
216 int scan = 0;
217 char devmode = 0;
218 int runstop = 0;
219 int readonly = 0;
220 int SparcAdjust = 0;
221 mddev_dev_t devlist = NULL;
222 mddev_dev_t *devlistend = & devlist;
223 mddev_dev_t dv;
224 int devs_found = 0;
225 int verbose = 0;
226 int brief = 0;
227 int force = 0;
228 int test = 0;
229 int assume_clean = 0;
230 int autof = 0; /* -1 for non-partitions, 1 or more to create partitions */
231
232 char *mailaddr = NULL;
233 char *program = NULL;
234 int delay = 0;
235 int daemonise = 0;
236 int oneshot = 0;
237
238 int mdfd = -1;
239
240 ident.uuid_set=0;
241 ident.level = UnSet;
242 ident.raid_disks = UnSet;
243 ident.super_minor= UnSet;
244 ident.devices=0;
245
246 while ((option_index = -1) ,
247 (opt=getopt_long(argc, argv,
248 short_options, long_options,
249 &option_index)) != -1) {
250 int newmode = mode;
251 /* firstly, so mode-independant options */
252 switch(opt) {
253 case 'h':
254 help_text = Help;
255 if (option_index > 0 &&
256 strcmp(long_options[option_index].name, "help-options")==0)
257 help_text = OptionHelp;
258 else
259 switch (mode) {
260 case ASSEMBLE : help_text = Help_assemble; break;
261 case BUILD : help_text = Help_build; break;
262 case CREATE : help_text = Help_create; break;
263 case MANAGE : help_text = Help_manage; break;
264 case MISC : help_text = Help_misc; break;
265 case MONITOR : help_text = Help_monitor; break;
266 case GROW : help_text = Help_grow; break;
267 }
268 fputs(help_text,stderr);
269 exit(0);
270
271 case 'V':
272 fputs(Version, stderr);
273 exit(0);
274
275 case 'v': verbose = 1;
276 continue;
277
278 case 'b': brief = 1;
279 continue;
280
281 case ':':
282 case '?':
283 fputs(Usage, stderr);
284 exit(2);
285 }
286 /* second, figure out the mode.
287 * Some options force the mode. Others
288 * set the mode if it isn't already
289 */
290
291 switch(opt) {
292 case '@': /* just incase they say --manage */
293 newmode = MANAGE; break;
294 case 'a':
295 case 'r':
296 case 'f':
297 case 1 : if (!mode) newmode = MANAGE; break;
298
299 case 'A': newmode = ASSEMBLE; break;
300 case 'B': newmode = BUILD; break;
301 case 'C': newmode = CREATE; break;
302 case 'F': newmode = MONITOR;break;
303 case 'G': newmode = GROW; break;
304
305 case '#':
306 case 'D':
307 case 'E':
308 case 'Q': newmode = MISC; break;
309 case 'R':
310 case 'S':
311 case 'o':
312 case 'w':
313 case 'K': if (!mode) newmode = MISC; break;
314 }
315 if (mode && newmode == mode) {
316 /* everybody happy ! */
317 } else if (mode && newmode != mode) {
318 /* not allowed.. */
319 fprintf(stderr, Name ": ");
320 if (option_index >= 0)
321 fprintf(stderr, "--%s", long_options[option_index].name);
322 else
323 fprintf(stderr, "-%c", opt);
324 fprintf(stderr, " would set mode to %s, but it is already %s.\n",
325 map_num(modes, newmode),
326 map_num(modes, mode));
327 exit(2);
328 } else if (!mode && newmode) {
329 mode = newmode;
330 } else {
331 /* special case of -c --help */
332 if (opt == 'c' &&
333 ( strncmp(optarg, "--h", 3)==0 ||
334 strncmp(optarg, "-h", 2)==0)) {
335 fputs(Help_config, stderr);
336 exit(0);
337 }
338 if (option_index >= 0)
339 fprintf(stderr, "--%s", long_options[option_index].name);
340 else
341 fprintf(stderr, "-%c", opt);
342 fprintf(stderr, " does not set the mode, and so cannot be first.\n");
343 exit(2);
344 }
345
346 /* if we just set the mode, then done */
347 switch(opt) {
348 case '@':
349 case '#':
350 case 'A':
351 case 'B':
352 case 'C':
353 case 'F':
354 case 'G':
355 continue;
356 }
357 if (opt == 1) {
358 /* an undecorated option - must be a device name.
359 */
360 if (devs_found > 0 && mode == '@' && !devmode) {
361 fprintf(stderr, Name ": Must give one of -a/-r/-f for subsequent devices at %s\n", optarg);
362 exit(2);
363 }
364 dv = malloc(sizeof(*dv));
365 if (dv == NULL) {
366 fprintf(stderr, Name ": malloc failed\n");
367 exit(3);
368 }
369 dv->devname = optarg;
370 dv->disposition = devmode;
371 dv->next = NULL;
372 *devlistend = dv;
373 devlistend = &dv->next;
374
375 devs_found++;
376 continue;
377 }
378
379 /* We've got a mode, and opt is now something else which
380 * could depend on the mode */
381 #define O(a,b) ((a<<8)|b)
382 switch (O(mode,opt)) {
383 case O(CREATE,'c'):
384 case O(BUILD,'c'): /* chunk or rounding */
385 if (chunk) {
386 fprintf(stderr, Name ": chunk/rounding may only be specified once. "
387 "Second value is %s.\n", optarg);
388 exit(2);
389 }
390 chunk = strtol(optarg, &c, 10);
391 if (!optarg[0] || *c || chunk<4 || ((chunk-1)&chunk)) {
392 fprintf(stderr, Name ": invalid chunk/rounding value: %s\n",
393 optarg);
394 exit(2);
395 }
396 continue;
397
398 case O(GROW,'z'):
399 case O(CREATE,'z'): /* size */
400 if (size >= 0) {
401 fprintf(stderr, Name ": size may only be specified once. "
402 "Second value is %s.\n", optarg);
403 exit(2);
404 }
405 if (strcmp(optarg, "max")==0)
406 size = 0;
407 else {
408 size = strtol(optarg, &c, 10);
409 if (!optarg[0] || *c || size < 4) {
410 fprintf(stderr, Name ": invalid size: %s\n",
411 optarg);
412 exit(2);
413 }
414 }
415 continue;
416
417 case O(CREATE,'l'):
418 case O(BUILD,'l'): /* set raid level*/
419 if (level != UnSet) {
420 fprintf(stderr, Name ": raid level may only be set once. "
421 "Second value is %s.\n", optarg);
422 exit(2);
423 }
424 level = map_name(pers, optarg);
425 if (level == UnSet) {
426 fprintf(stderr, Name ": invalid raid level: %s\n",
427 optarg);
428 exit(2);
429 }
430 if (level != 0 && level != -1 && level != 1 && level != -4 && mode == BUILD) {
431 fprintf(stderr, Name ": Raid level %s not permitted with --build.\n",
432 optarg);
433 exit(2);
434 }
435 if (sparedisks > 0 && level < 1 && level >= -1) {
436 fprintf(stderr, Name ": raid level %s is incompatible with spare-devices setting.\n",
437 optarg);
438 exit(2);
439 }
440 ident.level = level;
441 continue;
442
443 case O(CREATE,'p'): /* raid5 layout */
444 if (layout >= 0) {
445 fprintf(stderr,Name ": layout may only be sent once. "
446 "Second value was %s\n", optarg);
447 exit(2);
448 }
449 switch(level) {
450 default:
451 fprintf(stderr, Name ": layout not meaningful for %s arrays.\n",
452 map_num(pers, level));
453 exit(2);
454 case UnSet:
455 fprintf(stderr, Name ": raid level must be given before layout.\n");
456 exit(2);
457
458 case 5:
459 case 6:
460 layout = map_name(r5layout, optarg);
461 if (layout==UnSet) {
462 fprintf(stderr, Name ": layout %s not understood for raid5.\n",
463 optarg);
464 exit(2);
465 }
466 break;
467 }
468 continue;
469
470 case O(CREATE,3):
471 case O(BUILD,3): /* assume clean */
472 assume_clean = 1;
473 continue;
474
475 case O(GROW,'n'):
476 case O(CREATE,'n'):
477 case O(BUILD,'n'): /* number of raid disks */
478 if (raiddisks) {
479 fprintf(stderr, Name ": raid-devices set twice: %d and %s\n",
480 raiddisks, optarg);
481 exit(2);
482 }
483 raiddisks = strtol(optarg, &c, 10);
484 if (!optarg[0] || *c || raiddisks<=0 || raiddisks > MD_SB_DISKS) {
485 fprintf(stderr, Name ": invalid number of raid devices: %s\n",
486 optarg);
487 exit(2);
488 }
489 if (raiddisks == 1 && !force) {
490 fprintf(stderr, Name ": '1' is an unusual number of drives for an array, so it is probably\n"
491 " a mistake. If you really mean it you will need to specify --force before\n"
492 " setting the number of drives.\n");
493 exit(2);
494 }
495 ident.raid_disks = raiddisks;
496 continue;
497
498 case O(CREATE,'x'): /* number of spare (eXtra) discs */
499 if (sparedisks) {
500 fprintf(stderr,Name ": spare-devices set twice: %d and %s\n",
501 sparedisks, optarg);
502 exit(2);
503 }
504 if (level != UnSet && level <= 0 && level >= -1) {
505 fprintf(stderr, Name ": spare-devices setting is incompatible with raid level %d\n",
506 level);
507 exit(2);
508 }
509 sparedisks = strtol(optarg, &c, 10);
510 if (!optarg[0] || *c || sparedisks < 0 || sparedisks > MD_SB_DISKS - raiddisks) {
511 fprintf(stderr, Name ": invalid number of spare-devices: %s\n",
512 optarg);
513 exit(2);
514 }
515 continue;
516
517 case O(CREATE,'a'):
518 case O(BUILD,'a'):
519 case O(ASSEMBLE,'a'): /* auto-creation of device node */
520 if (optarg == NULL)
521 autof = -1;
522 else if (strcasecmp(optarg,"no")==0)
523 autof = 0;
524 else if (strcasecmp(optarg,"yes")==0 || strcasecmp(optarg,"md")==0)
525 autof = -1;
526 else {
527 /* There might be digits, and maybe a hypen, at the end */
528 char *e = optarg + strlen(optarg);
529 int num = 4;
530 int len;
531 while (e > optarg && isdigit(e[-1]))
532 e--;
533 if (*e) {
534 num = atoi(e);
535 if (num <= 0) num = 1;
536 }
537 if (e > optarg && e[-1] == '-')
538 e--;
539 len = e - optarg;
540 if ((len == 3 && strncasecmp(optarg,"mdp",3)==0) ||
541 (len == 1 && strncasecmp(optarg,"p",1)==0) ||
542 (len >= 4 && strncasecmp(optarg,"part",4)==0))
543 autof = num;
544 else {
545 fprintf(stderr, Name ": --auto flag arg of \"%s\" unrecognised: use no,yes,md,mdp,part\n"
546 " optionally followed by a number.\n",
547 optarg);
548 exit(2);
549 }
550 }
551 continue;
552
553 case O(BUILD,'f'): /* force honouring '-n 1' */
554 case O(CREATE,'f'): /* force honouring of device list */
555 case O(ASSEMBLE,'f'): /* force assembly */
556 case O(MISC,'f'): /* force zero */
557 force=1;
558 continue;
559
560 /* now for the Assemble options */
561 case O(ASSEMBLE,'u'): /* uuid of array */
562 if (ident.uuid_set) {
563 fprintf(stderr, Name ": uuid cannot be set twice. "
564 "Second value %s.\n", optarg);
565 exit(2);
566 }
567 if (parse_uuid(optarg, ident.uuid))
568 ident.uuid_set = 1;
569 else {
570 fprintf(stderr,Name ": Bad uuid: %s\n", optarg);
571 exit(2);
572 }
573 continue;
574
575 case O(ASSEMBLE,'m'): /* super-minor for array */
576 if (ident.super_minor != UnSet) {
577 fprintf(stderr, Name ": super-minor cannot be set twice. "
578 "Second value: %s.\n", optarg);
579 exit(2);
580 }
581 if (strcmp(optarg, "dev")==0)
582 ident.super_minor = -2;
583 else {
584 ident.super_minor = strtoul(optarg, &cp, 10);
585 if (!optarg[0] || *cp) {
586 fprintf(stderr, Name ": Bad super-minor number: %s.\n", optarg);
587 exit(2);
588 }
589 }
590 continue;
591
592 case O(ASSEMBLE,'U'): /* update the superblock */
593 if (update) {
594 fprintf(stderr, Name ": Can only update one aspect of superblock, both %s and %s given.\n",
595 update, optarg);
596 exit(2);
597 }
598 update = optarg;
599 if (strcmp(update, "sparc2.2")==0) continue;
600 if (strcmp(update, "super-minor") == 0)
601 continue;
602 if (strcmp(update, "summaries")==0)
603 continue;
604 fprintf(stderr, Name ": '--update %s' invalid. Only 'sparc2.2', 'super-minor' or 'summaries' supported\n",update);
605 exit(2);
606
607 case O(ASSEMBLE,'c'): /* config file */
608 case O(MISC, 'c'):
609 case O(MONITOR,'c'):
610 if (configfile) {
611 fprintf(stderr, Name ": configfile cannot be set twice. "
612 "Second value is %s.\n", optarg);
613 exit(2);
614 }
615 configfile = optarg;
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 if (delay)
642 fprintf(stderr, Name ": only specify delay once. %s ignored.\n",
643 optarg);
644 else {
645 delay = strtol(optarg, &c, 10);
646 if (!optarg[0] || *c || delay<1) {
647 fprintf(stderr, Name ": invalid delay: %s\n",
648 optarg);
649 exit(2);
650 }
651 }
652 continue;
653 case O(MONITOR,'f'): /* daemonise */
654 daemonise = 1;
655 continue;
656 case O(MONITOR,'1'): /* oneshot */
657 oneshot = 1;
658 continue;
659 case O(MONITOR,'t'): /* test */
660 test = 1;
661 continue;
662
663 /* now the general management options. Some are applicable
664 * to other modes. None have arguments.
665 */
666 case O(MANAGE,'a'): /* add a drive */
667 devmode = 'a';
668 continue;
669 case O(MANAGE,'r'): /* remove a drive */
670 devmode = 'r';
671 continue;
672 case O(MANAGE,'f'): /* set faulty */
673 devmode = 'f';
674 continue;
675 case O(MANAGE,'R'):
676 case O(ASSEMBLE,'R'):
677 case O(BUILD,'R'):
678 case O(CREATE,'R'): /* Run the array */
679 if (runstop < 0) {
680 fprintf(stderr, Name ": Cannot both Stop and Run an array\n");
681 exit(2);
682 }
683 runstop = 1;
684 continue;
685 case O(MANAGE,'S'):
686 if (runstop > 0) {
687 fprintf(stderr, Name ": Cannot both Run and Stop an array\n");
688 exit(2);
689 }
690 runstop = -1;
691 continue;
692
693 case O(MANAGE,'o'):
694 if (readonly < 0) {
695 fprintf(stderr, Name ": Cannot have both readonly and readwrite\n");
696 exit(2);
697 }
698 readonly = 1;
699 continue;
700 case O(MANAGE,'w'):
701 if (readonly > 0) {
702 fprintf(stderr, Name ": Cannot have both readwrite and readonly.\n");
703 exit(2);
704 }
705 readonly = -1;
706 continue;
707
708 case O(MISC,'Q'):
709 case O(MISC,'D'):
710 case O(MISC,'E'):
711 case O(MISC,'K'):
712 case O(MISC,'R'):
713 case O(MISC,'S'):
714 case O(MISC,'o'):
715 case O(MISC,'w'):
716 if (devmode && devmode != opt &&
717 (devmode == 'E' || (opt == 'E' && devmode != 'Q'))) {
718 fprintf(stderr, Name ": --examine/-E cannot be given with -%c\n",
719 devmode =='E'?opt:devmode);
720 exit(2);
721 }
722 devmode = opt;
723 continue;
724 case O(MISC,'t'):
725 test = 1;
726 continue;
727
728 case O(MISC, 22):
729 if (devmode != 'E') {
730 fprintf(stderr, Name ": --sparc2.2 only allowed with --examine\n");
731 exit(2);
732 }
733 SparcAdjust = 1;
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) {
746 fputs(Usage, stderr);
747 exit(2);
748 }
749 /* Ok, got the option parsing out of the way
750 * hopefully it's mostly right but there might be some stuff
751 * missing
752 *
753 * That is mosty checked in the per-mode stuff but...
754 *
755 * For @,B,C and A without -s, the first device listed must be an md device
756 * we check that here and open it.
757 */
758
759 if (mode==MANAGE || mode == BUILD || mode == CREATE || mode == GROW ||
760 (mode == ASSEMBLE && ! scan)) {
761 if (devs_found < 1) {
762 fprintf(stderr, Name ": an md device must be given in this mode\n");
763 exit(2);
764 }
765 if ((int)ident.super_minor == -2 && autof) {
766 fprintf(stderr, Name ": --super-minor=dev is incompatible with --auto\n");
767 exit(2);
768 }
769 mdfd = open_mddev(devlist->devname, autof);
770 if (mdfd < 0)
771 exit(1);
772 if ((int)ident.super_minor == -2) {
773 struct stat stb;
774 fstat(mdfd, &stb);
775 ident.super_minor = MINOR(stb.st_rdev);
776 }
777 }
778
779 rv = 0;
780 switch(mode) {
781 case MANAGE:
782 /* readonly, add/remove, readwrite, runstop */
783 if (readonly>0)
784 rv = Manage_ro(devlist->devname, mdfd, readonly);
785 if (!rv && devs_found>1)
786 rv = Manage_subdevs(devlist->devname, mdfd,
787 devlist->next);
788 if (!rv && readonly < 0)
789 rv = Manage_ro(devlist->devname, mdfd, readonly);
790 if (!rv && runstop)
791 rv = Manage_runstop(devlist->devname, mdfd, runstop);
792 break;
793 case ASSEMBLE:
794 if (devs_found == 1 && ident.uuid_set == 0 &&
795 ident.super_minor == UnSet && !scan ) {
796 /* Only a device has been given, so get details from config file */
797 mddev_ident_t array_ident = conf_get_ident(configfile, devlist->devname);
798 mdfd = open_mddev(devlist->devname, array_ident->autof);
799 if (mdfd < 0)
800 rv |= 1;
801 else {
802 if (array_ident == NULL) {
803 fprintf(stderr, Name ": %s not identified in config file.\n",
804 devlist->devname);
805 rv |= 1;
806 }
807 else
808 rv |= Assemble(devlist->devname, mdfd, array_ident, configfile,
809 NULL,
810 readonly, runstop, update, verbose, force);
811 }
812 } else if (!scan)
813 rv = Assemble(devlist->devname, mdfd, &ident, configfile,
814 devlist->next,
815 readonly, runstop, update, verbose, force);
816 else if (devs_found>0) {
817 if (update && devs_found > 1) {
818 fprintf(stderr, Name ": can only update a single array at a time\n");
819 exit(1);
820 }
821 for (dv = devlist ; dv ; dv=dv->next) {
822 mddev_ident_t array_ident = conf_get_ident(configfile, dv->devname);
823 mdfd = open_mddev(dv->devname, array_ident->autof);
824 if (mdfd < 0) {
825 rv |= 1;
826 continue;
827 }
828 if (array_ident == NULL) {
829 fprintf(stderr, Name ": %s not identified in config file.\n",
830 dv->devname);
831 rv |= 1;
832 continue;
833 }
834 rv |= Assemble(dv->devname, mdfd, array_ident, configfile,
835 NULL,
836 readonly, runstop, update, verbose, force);
837 }
838 } else {
839 mddev_ident_t array_list = conf_get_ident(configfile, NULL);
840 if (!array_list) {
841 fprintf(stderr, Name ": No arrays found in config file\n");
842 rv = 1;
843 } else
844 for (; array_list; array_list = array_list->next) {
845 mdu_array_info_t array;
846 mdfd = open_mddev(array_list->devname, array_list->autof);
847 if (mdfd < 0) {
848 rv |= 1;
849 continue;
850 }
851 if (ioctl(mdfd, GET_ARRAY_INFO, &array)>=0)
852 /* already assembled, skip */
853 continue;
854 rv |= Assemble(array_list->devname, mdfd,
855 array_list, configfile,
856 NULL,
857 readonly, runstop, NULL, verbose, force);
858 }
859 }
860 break;
861 case BUILD:
862 rv = Build(devlist->devname, mdfd, chunk, level, raiddisks, devlist->next, assume_clean);
863 break;
864 case CREATE:
865 rv = Create(devlist->devname, mdfd, chunk, level, layout, size<0 ? 0 : size,
866 raiddisks, sparedisks,
867 devs_found-1, devlist->next, runstop, verbose, force);
868 break;
869 case MISC:
870
871 if (devmode == 'E') {
872 if (devlist == NULL && !scan) {
873 fprintf(stderr, Name ": No devices to examine\n");
874 exit(2);
875 }
876 if (devlist == NULL)
877 devlist = conf_get_devs(configfile);
878 if (devlist == NULL) {
879 fprintf(stderr, Name ": No devices listed in %s\n", configfile?configfile:DefaultConfFile);
880 exit(1);
881 }
882 rv = Examine(devlist, scan?!verbose:brief, scan, SparcAdjust);
883 } else {
884 if (devlist == NULL) {
885 if ((devmode == 'S' ||devmode=='D') && scan) {
886 /* apply to all devices in /proc/mdstat */
887 struct mdstat_ent *ms = mdstat_read(0);
888 struct mdstat_ent *e;
889 for (e=ms ; e ; e=e->next) {
890 char *name = get_md_name(e->devnum);
891
892 if (!name) {
893 fprintf(stderr, Name ": cannot find device file for %s\n",
894 e->dev);
895 continue;
896 }
897 if (devmode == 'D')
898 rv |= Detail(name, !verbose, test);
899 else if (devmode=='S') {
900 mdfd = open_mddev(name, 0);
901 if (mdfd >= 0)
902 rv |= Manage_runstop(name, mdfd, -1);
903 }
904 put_md_name(name);
905 }
906 } else {
907 fprintf(stderr, Name ": No devices given.\n");
908 exit(2);
909 }
910 }
911 for (dv=devlist ; dv; dv=dv->next) {
912 switch(dv->disposition) {
913 case 'D':
914 rv |= Detail(dv->devname, brief, test); continue;
915 case 'K': /* Zero superblock */
916 rv |= Kill(dv->devname, force); continue;
917 case 'Q':
918 rv |= Query(dv->devname); continue;
919 }
920 mdfd = open_mddev(dv->devname, 0);
921 if (mdfd>=0)
922 switch(dv->disposition) {
923 case 'R':
924 rv |= Manage_runstop(dv->devname, mdfd, 1); break;
925 case 'S':
926 rv |= Manage_runstop(dv->devname, mdfd, -1); break;
927 case 'o':
928 rv |= Manage_ro(dv->devname, mdfd, 1); break;
929 case 'w':
930 rv |= Manage_ro(dv->devname, mdfd, -1); break;
931 }
932 }
933 }
934 break;
935 case MONITOR:
936 if (!devlist && !scan) {
937 fprintf(stderr, Name ": Cannot monitor: need --scan or at least one device\n");
938 rv = 1;
939 break;
940 }
941 rv= Monitor(devlist, mailaddr, program,
942 delay?delay:60, daemonise, scan, oneshot, configfile, test);
943 break;
944
945 case GROW:
946 if (devs_found > 1) {
947 fprintf(stderr, Name ": Only one device may be given for --grow\n");
948 rv = 1;
949 break;
950 }
951 if (size >= 0 && raiddisks) {
952 fprintf(stderr, Name ": can only grow size OR raiddisks, not both\n");
953 rv = 1;
954 break;
955 }
956 rv = Manage_resize(devlist->devname, mdfd, size, raiddisks);
957 break;
958 }
959 exit(rv);
960 }
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