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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 rebuild_map = 0;
105 int auto_update_home = 0;
106
107 int copies;
108 int print_help = 0;
109 FILE *outf;
110
111 int mdfd = -1;
112
113 srandom(time(0) ^ getpid());
114
115 ident.uuid_set=0;
116 ident.level = UnSet;
117 ident.raid_disks = UnSet;
118 ident.super_minor= UnSet;
119 ident.devices=0;
120 ident.spare_group = NULL;
121 ident.autof = 0;
122 ident.st = NULL;
123 ident.bitmap_fd = -1;
124 ident.bitmap_file = NULL;
125 ident.name[0] = 0;
126
127 while ((option_index = -1) ,
128 (opt=getopt_long(argc, argv,
129 shortopt, long_options,
130 &option_index)) != -1) {
131 int newmode = mode;
132 /* firstly, some mode-independant options */
133 switch(opt) {
134 case 'h':
135 if (option_index > 0 &&
136 strcmp(long_options[option_index].name, "help-options")==0)
137 print_help = 2;
138 else
139 print_help = 1;
140 continue;
141
142 case 'V':
143 fputs(Version, stderr);
144 exit(0);
145
146 case 'v': verbose++;
147 continue;
148
149 case 'q': quiet++;
150 continue;
151
152 case 'b':
153 if (mode == ASSEMBLE || mode == BUILD || mode == CREATE || mode == GROW)
154 break; /* b means bitmap */
155 brief = 1;
156 if (optarg) {
157 fprintf(stderr, Name ": -b cannot have any extra immediately after it, sorry.\n");
158 exit(2);
159 }
160 continue;
161
162 case HomeHost:
163 homehost = optarg;
164 continue;
165
166 case ':':
167 case '?':
168 fputs(Usage, stderr);
169 exit(2);
170 }
171 /* second, figure out the mode.
172 * Some options force the mode. Others
173 * set the mode if it isn't already
174 */
175
176 switch(opt) {
177 case '@': /* just incase they say --manage */
178 newmode = MANAGE;
179 shortopt = short_bitmap_auto_options;
180 break;
181 case 'a':
182 case 'r':
183 case 'f':
184 case ReAdd: /* re-add */
185 if (!mode) {
186 newmode = MANAGE;
187 shortopt = short_bitmap_auto_options;
188 }
189 break;
190
191 case 'A': newmode = ASSEMBLE; shortopt = short_bitmap_auto_options; break;
192 case 'B': newmode = BUILD; shortopt = short_bitmap_auto_options; break;
193 case 'C': newmode = CREATE; shortopt = short_bitmap_auto_options; break;
194 case 'F': newmode = MONITOR;break;
195 case 'G': newmode = GROW; shortopt = short_bitmap_auto_options; break;
196 case 'I': newmode = INCREMENTAL; break;
197
198 case '#':
199 case 'D':
200 case 'E':
201 case 'X':
202 case 'Q': newmode = MISC; break;
203 case 'R':
204 case 'S':
205 case 'o':
206 case 'w':
207 case 'W':
208 case 'K': if (!mode) newmode = MISC; break;
209 }
210 if (mode && newmode == mode) {
211 /* everybody happy ! */
212 } else if (mode && newmode != mode) {
213 /* not allowed.. */
214 fprintf(stderr, Name ": ");
215 if (option_index >= 0)
216 fprintf(stderr, "--%s", long_options[option_index].name);
217 else
218 fprintf(stderr, "-%c", opt);
219 fprintf(stderr, " would set mdadm mode to \"%s\", but it is already set to \"%s\".\n",
220 map_num(modes, newmode),
221 map_num(modes, mode));
222 exit(2);
223 } else if (!mode && newmode) {
224 mode = newmode;
225 } else {
226 /* special case of -c --help */
227 if (opt == 'c' &&
228 ( strncmp(optarg, "--h", 3)==0 ||
229 strncmp(optarg, "-h", 2)==0)) {
230 fputs(Help_config, stdout);
231 exit(0);
232 }
233
234 /* If first option is a device, don't force the mode yet */
235 if (opt == 1) {
236 if (devs_found == 0) {
237 dv = malloc(sizeof(*dv));
238 if (dv == NULL) {
239 fprintf(stderr, Name ": malloc failed\n");
240 exit(3);
241 }
242 dv->devname = optarg;
243 dv->disposition = devmode;
244 dv->writemostly = writemostly;
245 dv->re_add = re_add;
246 dv->used = 0;
247 dv->next = NULL;
248 *devlistend = dv;
249 devlistend = &dv->next;
250
251 devs_found++;
252 continue;
253 }
254 /* No mode yet, and this is the second device ... */
255 fprintf(stderr, Name ": An option must be given to set the mode before a second device is listed\n");
256 exit(2);
257 }
258 if (option_index >= 0)
259 fprintf(stderr, Name ": --%s", long_options[option_index].name);
260 else
261 fprintf(stderr, Name ": -%c", opt);
262 fprintf(stderr, " does not set the mode, and so cannot be the first option.\n");
263 exit(2);
264 }
265
266 /* if we just set the mode, then done */
267 switch(opt) {
268 case '@':
269 case '#':
270 case 'A':
271 case 'B':
272 case 'C':
273 case 'F':
274 case 'G':
275 case 'I':
276 continue;
277 }
278 if (opt == 1) {
279 /* an undecorated option - must be a device name.
280 */
281 if (devs_found > 0 && mode == '@' && !devmode) {
282 fprintf(stderr, Name ": Must give one of -a/-r/-f for subsequent devices at %s\n", optarg);
283 exit(2);
284 }
285 if (devs_found > 0 && mode == 'G' && !devmode) {
286 fprintf(stderr, Name ": Must give one of -a for devices do add: %s\n", optarg);
287 exit(2);
288 }
289 dv = malloc(sizeof(*dv));
290 if (dv == NULL) {
291 fprintf(stderr, Name ": malloc failed\n");
292 exit(3);
293 }
294 dv->devname = optarg;
295 dv->disposition = devmode;
296 dv->writemostly = writemostly;
297 dv->re_add = re_add;
298 dv->next = NULL;
299 *devlistend = dv;
300 devlistend = &dv->next;
301
302 devs_found++;
303 continue;
304 }
305
306 /* We've got a mode, and opt is now something else which
307 * could depend on the mode */
308 #define O(a,b) ((a<<8)|b)
309 switch (O(mode,opt)) {
310 case O(CREATE,'c'):
311 case O(BUILD,'c'): /* chunk or rounding */
312 if (chunk) {
313 fprintf(stderr, Name ": chunk/rounding may only be specified once. "
314 "Second value is %s.\n", optarg);
315 exit(2);
316 }
317 chunk = strtol(optarg, &c, 10);
318 if (!optarg[0] || *c || chunk<4 || ((chunk-1)&chunk)) {
319 fprintf(stderr, Name ": invalid chunk/rounding value: %s\n",
320 optarg);
321 exit(2);
322 }
323 continue;
324
325 case O(ASSEMBLE,AutoHomeHost):
326 auto_update_home = 1;
327 continue;
328 case O(INCREMENTAL, 'e'):
329 case O(CREATE,'e'):
330 case O(ASSEMBLE,'e'):
331 case O(MISC,'e'): /* set metadata (superblock) information */
332 if (ss) {
333 fprintf(stderr, Name ": metadata information already given\n");
334 exit(2);
335 }
336 for(i=0; !ss && superlist[i]; i++)
337 ss = superlist[i]->match_metadata_desc(optarg);
338
339 if (!ss) {
340 fprintf(stderr, Name ": unrecognised metadata identifier: %s\n", optarg);
341 exit(2);
342 }
343 max_disks = ss->max_devs;
344 continue;
345
346 case O(MANAGE,'W'):
347 case O(BUILD,'W'):
348 case O(CREATE,'W'):
349 /* set write-mostly for following devices */
350 writemostly = 1;
351 continue;
352
353 case O(GROW,'z'):
354 case O(CREATE,'z'): /* size */
355 if (size >= 0) {
356 fprintf(stderr, Name ": size may only be specified once. "
357 "Second value is %s.\n", optarg);
358 exit(2);
359 }
360 if (strcmp(optarg, "max")==0)
361 size = 0;
362 else {
363 size = strtoll(optarg, &c, 10);
364 if (!optarg[0] || *c || size < 4) {
365 fprintf(stderr, Name ": invalid size: %s\n",
366 optarg);
367 exit(2);
368 }
369 }
370 continue;
371
372 case O(GROW,'l'): /* hack - needed to understand layout */
373 case O(CREATE,'l'):
374 case O(BUILD,'l'): /* set raid level*/
375 if (level != UnSet) {
376 fprintf(stderr, Name ": raid level may only be set once. "
377 "Second value is %s.\n", optarg);
378 exit(2);
379 }
380 level = map_name(pers, optarg);
381 if (level == UnSet) {
382 fprintf(stderr, Name ": invalid raid level: %s\n",
383 optarg);
384 exit(2);
385 }
386 if (level != 0 && level != -1 && level != 1 && level != -4 && level != -5 && mode == BUILD) {
387 fprintf(stderr, Name ": Raid level %s not permitted with --build.\n",
388 optarg);
389 exit(2);
390 }
391 if (sparedisks > 0 && level < 1 && level >= -1) {
392 fprintf(stderr, Name ": raid level %s is incompatible with spare-devices setting.\n",
393 optarg);
394 exit(2);
395 }
396 ident.level = level;
397 continue;
398
399 case O(CREATE,'p'): /* raid5 layout */
400 case O(BUILD,'p'): /* faulty layout */
401 case O(GROW, 'p'): /* faulty reconfig */
402 if (layout != UnSet) {
403 fprintf(stderr,Name ": layout may only be sent once. "
404 "Second value was %s\n", optarg);
405 exit(2);
406 }
407 switch(level) {
408 default:
409 fprintf(stderr, Name ": layout not meaningful for %s arrays.\n",
410 map_num(pers, level));
411 exit(2);
412 case UnSet:
413 fprintf(stderr, Name ": raid level must be given before layout.\n");
414 exit(2);
415
416 case 5:
417 case 6:
418 layout = map_name(r5layout, optarg);
419 if (layout==UnSet) {
420 fprintf(stderr, Name ": layout %s not understood for raid5.\n",
421 optarg);
422 exit(2);
423 }
424 break;
425
426 case 10:
427 /* 'f', 'o' or 'n' followed by a number <= raid_disks */
428 if ((optarg[0] != 'n' && optarg[0] != 'f' && optarg[0] != 'o') ||
429 (copies = strtoul(optarg+1, &cp, 10)) < 1 ||
430 copies > 200 ||
431 *cp) {
432 fprintf(stderr, Name ": layout for raid10 must be 'nNN', 'oNN' or 'fNN' where NN is a number, not %s\n", optarg);
433 exit(2);
434 }
435 if (optarg[0] == 'n')
436 layout = 256 + copies;
437 else if (optarg[0] == 'o')
438 layout = 0x10000 + (copies<<8) + 1;
439 else
440 layout = 1 + (copies<<8);
441 break;
442 case -5: /* Faulty
443 * modeNNN
444 */
445
446 {
447 int ln = strcspn(optarg, "0123456789");
448 char *m = strdup(optarg);
449 int mode;
450 m[ln] = 0;
451 mode = map_name(faultylayout, m);
452 if (mode == UnSet) {
453 fprintf(stderr, Name ": layout %s not understood for faulty.\n",
454 optarg);
455 exit(2);
456 }
457 layout = mode | (atoi(optarg+ln)<< ModeShift);
458 }
459 }
460 continue;
461
462 case O(CREATE,AssumeClean):
463 case O(BUILD,AssumeClean): /* assume clean */
464 assume_clean = 1;
465 continue;
466
467 case O(GROW,'n'):
468 case O(CREATE,'n'):
469 case O(BUILD,'n'): /* number of raid disks */
470 if (raiddisks) {
471 fprintf(stderr, Name ": raid-devices set twice: %d and %s\n",
472 raiddisks, optarg);
473 exit(2);
474 }
475 raiddisks = strtol(optarg, &c, 10);
476 if (!optarg[0] || *c || raiddisks<=0) {
477 fprintf(stderr, Name ": invalid number of raid devices: %s\n",
478 optarg);
479 exit(2);
480 }
481 ident.raid_disks = raiddisks;
482 continue;
483
484 case O(CREATE,'x'): /* number of spare (eXtra) discs */
485 if (sparedisks) {
486 fprintf(stderr,Name ": spare-devices set twice: %d and %s\n",
487 sparedisks, optarg);
488 exit(2);
489 }
490 if (level != UnSet && level <= 0 && level >= -1) {
491 fprintf(stderr, Name ": spare-devices setting is incompatible with raid level %d\n",
492 level);
493 exit(2);
494 }
495 sparedisks = strtol(optarg, &c, 10);
496 if (!optarg[0] || *c || sparedisks < 0) {
497 fprintf(stderr, Name ": invalid number of spare-devices: %s\n",
498 optarg);
499 exit(2);
500 }
501 continue;
502
503 case O(CREATE,'a'):
504 case O(BUILD,'a'):
505 case O(ASSEMBLE,'a'): /* auto-creation of device node */
506 autof = parse_auto(optarg, "--auto flag", 0);
507 continue;
508
509 case O(CREATE,Symlinks):
510 case O(BUILD,Symlinks):
511 case O(ASSEMBLE,Symlinks): /* auto creation of symlinks in /dev to /dev/md */
512 symlinks = optarg;
513 continue;
514
515 case O(BUILD,'f'): /* force honouring '-n 1' */
516 case O(GROW,'f'): /* ditto */
517 case O(CREATE,'f'): /* force honouring of device list */
518 case O(ASSEMBLE,'f'): /* force assembly */
519 case O(MISC,'f'): /* force zero */
520 force=1;
521 continue;
522
523 /* now for the Assemble options */
524 case O(CREATE,'u'): /* uuid of array */
525 case O(ASSEMBLE,'u'): /* uuid of array */
526 if (ident.uuid_set) {
527 fprintf(stderr, Name ": uuid cannot be set twice. "
528 "Second value %s.\n", optarg);
529 exit(2);
530 }
531 if (parse_uuid(optarg, ident.uuid))
532 ident.uuid_set = 1;
533 else {
534 fprintf(stderr,Name ": Bad uuid: %s\n", optarg);
535 exit(2);
536 }
537 continue;
538
539 case O(CREATE,'N'):
540 case O(ASSEMBLE,'N'):
541 if (ident.name[0]) {
542 fprintf(stderr, Name ": name cannot be set twice. "
543 "Second value %s.\n", optarg);
544 exit(2);
545 }
546 if (strlen(optarg) > 32) {
547 fprintf(stderr, Name ": name '%s' is too long, 32 chars max.\n",
548 optarg);
549 exit(2);
550 }
551 strcpy(ident.name, optarg);
552 continue;
553
554 case O(ASSEMBLE,'m'): /* super-minor for array */
555 if (ident.super_minor != UnSet) {
556 fprintf(stderr, Name ": super-minor cannot be set twice. "
557 "Second value: %s.\n", optarg);
558 exit(2);
559 }
560 if (strcmp(optarg, "dev")==0)
561 ident.super_minor = -2;
562 else {
563 ident.super_minor = strtoul(optarg, &cp, 10);
564 if (!optarg[0] || *cp) {
565 fprintf(stderr, Name ": Bad super-minor number: %s.\n", optarg);
566 exit(2);
567 }
568 }
569 continue;
570
571 case O(ASSEMBLE,'U'): /* update the superblock */
572 if (update) {
573 fprintf(stderr, Name ": Can only update one aspect of superblock, both %s and %s given.\n",
574 update, optarg);
575 exit(2);
576 }
577 update = optarg;
578 if (strcmp(update, "sparc2.2")==0)
579 continue;
580 if (strcmp(update, "super-minor") == 0)
581 continue;
582 if (strcmp(update, "summaries")==0)
583 continue;
584 if (strcmp(update, "resync")==0)
585 continue;
586 if (strcmp(update, "uuid")==0)
587 continue;
588 if (strcmp(update, "name")==0)
589 continue;
590 if (strcmp(update, "homehost")==0)
591 continue;
592 if (strcmp(update, "devicesize")==0)
593 continue;
594 if (strcmp(update, "byteorder")==0) {
595 if (ss) {
596 fprintf(stderr, Name ": must not set metadata type with --update=byteorder.\n");
597 exit(2);
598 }
599 for(i=0; !ss && superlist[i]; i++)
600 ss = superlist[i]->match_metadata_desc("0.swap");
601 if (!ss) {
602 fprintf(stderr, Name ": INTERNAL ERROR cannot find 0.swap\n");
603 exit(2);
604 }
605
606 continue;
607 }
608 if (strcmp(update,"?") == 0 ||
609 strcmp(update, "help") == 0) {
610 outf = stdout;
611 fprintf(outf, Name ": ");
612 } else {
613 outf = stderr;
614 fprintf(outf,
615 Name ": '--update=%s' is invalid. ",
616 update);
617 }
618 fprintf(outf, "Valid --update options are:\n"
619 " 'sparc2.2', 'super-minor', 'uuid', 'name', 'resync',\n"
620 " 'summaries', 'homehost', 'byteorder', 'devicesize'.\n");
621 exit(outf == stdout ? 0 : 2);
622
623 case O(ASSEMBLE,NoDegraded): /* --no-degraded */
624 runstop = -1; /* --stop isn't allowed for --assemble,
625 * so we overload slightly */
626 continue;
627
628 case O(ASSEMBLE,'c'): /* config file */
629 case O(MISC, 'c'):
630 case O(MONITOR,'c'):
631 if (configfile) {
632 fprintf(stderr, Name ": configfile cannot be set twice. "
633 "Second value is %s.\n", optarg);
634 exit(2);
635 }
636 configfile = optarg;
637 set_conffile(configfile);
638 /* FIXME possibly check that config file exists. Even parse it */
639 continue;
640 case O(ASSEMBLE,'s'): /* scan */
641 case O(MISC,'s'):
642 case O(MONITOR,'s'):
643 case O(INCREMENTAL,'s'):
644 scan = 1;
645 continue;
646
647 case O(MONITOR,'m'): /* mail address */
648 if (mailaddr)
649 fprintf(stderr, Name ": only specify one mailaddress. %s ignored.\n",
650 optarg);
651 else
652 mailaddr = optarg;
653 continue;
654
655 case O(MONITOR,'p'): /* alert program */
656 if (program)
657 fprintf(stderr, Name ": only specify one alter program. %s ignored.\n",
658 optarg);
659 else
660 program = optarg;
661 continue;
662
663 case O(MONITOR,'d'): /* delay in seconds */
664 case O(GROW, 'd'):
665 case O(BUILD,'d'): /* delay for bitmap updates */
666 case O(CREATE,'d'):
667 if (delay)
668 fprintf(stderr, Name ": only specify delay once. %s ignored.\n",
669 optarg);
670 else {
671 delay = strtol(optarg, &c, 10);
672 if (!optarg[0] || *c || delay<1) {
673 fprintf(stderr, Name ": invalid delay: %s\n",
674 optarg);
675 exit(2);
676 }
677 }
678 continue;
679 case O(MONITOR,'f'): /* daemonise */
680 daemonise = 1;
681 continue;
682 case O(MONITOR,'i'): /* pid */
683 if (pidfile)
684 fprintf(stderr, Name ": only specify one pid file. %s ignored.\n",
685 optarg);
686 else
687 pidfile = optarg;
688 continue;
689 case O(MONITOR,'1'): /* oneshot */
690 oneshot = 1;
691 continue;
692 case O(MONITOR,'t'): /* test */
693 test = 1;
694 continue;
695 case O(MONITOR,'y'): /* log messages to syslog */
696 openlog("mdadm", 0, SYSLOG_FACILITY);
697 dosyslog = 1;
698 continue;
699
700 /* now the general management options. Some are applicable
701 * to other modes. None have arguments.
702 */
703 case O(GROW,'a'):
704 case O(MANAGE,'a'): /* add a drive */
705 devmode = 'a';
706 re_add = 0;
707 continue;
708 case O(MANAGE,ReAdd):
709 devmode = 'a';
710 re_add = 1;
711 continue;
712 case O(MANAGE,'r'): /* remove a drive */
713 devmode = 'r';
714 continue;
715 case O(MANAGE,'f'): /* set faulty */
716 devmode = 'f';
717 continue;
718 case O(INCREMENTAL,'R'):
719 case O(MANAGE,'R'):
720 case O(ASSEMBLE,'R'):
721 case O(BUILD,'R'):
722 case O(CREATE,'R'): /* Run the array */
723 if (runstop < 0) {
724 fprintf(stderr, Name ": Cannot both Stop and Run an array\n");
725 exit(2);
726 }
727 runstop = 1;
728 continue;
729 case O(MANAGE,'S'):
730 if (runstop > 0) {
731 fprintf(stderr, Name ": Cannot both Run and Stop an array\n");
732 exit(2);
733 }
734 runstop = -1;
735 continue;
736
737 case O(MANAGE,'o'):
738 if (readonly < 0) {
739 fprintf(stderr, Name ": Cannot have both readonly and readwrite\n");
740 exit(2);
741 }
742 readonly = 1;
743 continue;
744 case O(MANAGE,'w'):
745 if (readonly > 0) {
746 fprintf(stderr, Name ": Cannot have both readwrite and readonly.\n");
747 exit(2);
748 }
749 readonly = -1;
750 continue;
751
752 case O(MISC,'Q'):
753 case O(MISC,'D'):
754 case O(MISC,'E'):
755 case O(MISC,'K'):
756 case O(MISC,'R'):
757 case O(MISC,'S'):
758 case O(MISC,'X'):
759 case O(MISC,'o'):
760 case O(MISC,'w'):
761 case O(MISC,'W'):
762 if (devmode && devmode != opt &&
763 (devmode == 'E' || (opt == 'E' && devmode != 'Q'))) {
764 fprintf(stderr, Name ": --examine/-E cannot be given with -%c\n",
765 devmode =='E'?opt:devmode);
766 exit(2);
767 }
768 devmode = opt;
769 continue;
770 case O(MISC,'t'):
771 test = 1;
772 continue;
773
774 case O(MISC, Sparc22):
775 if (devmode != 'E') {
776 fprintf(stderr, Name ": --sparc2.2 only allowed with --examine\n");
777 exit(2);
778 }
779 SparcAdjust = 1;
780 continue;
781
782 case O(ASSEMBLE,'b'): /* here we simply set the bitmap file */
783 if (!optarg) {
784 fprintf(stderr, Name ": bitmap file needed with -b in --assemble mode\n");
785 exit(2);
786 }
787 if (strcmp(optarg, "internal")==0) {
788 fprintf(stderr, Name ": there is no need to specify --bitmap when assembling arrays with internal bitmaps\n");
789 continue;
790 }
791 bitmap_fd = open(optarg, O_RDWR);
792 if (!*optarg || bitmap_fd < 0) {
793 fprintf(stderr, Name ": cannot open bitmap file %s: %s\n", optarg, strerror(errno));
794 exit(2);
795 }
796 ident.bitmap_fd = bitmap_fd; /* for Assemble */
797 continue;
798
799 case O(ASSEMBLE, BackupFile):
800 case O(GROW, BackupFile):
801 /* Specify a file into which grow might place a backup,
802 * or from which assemble might recover a backup
803 */
804 if (backup_file) {
805 fprintf(stderr, Name ": backup file already specified, rejecting %s\n", optarg);
806 exit(2);
807 }
808 backup_file = optarg;
809 continue;
810
811 case O(GROW,'b'):
812 case O(BUILD,'b'):
813 case O(CREATE,'b'): /* here we create the bitmap */
814 if (strcmp(optarg, "internal")== 0 ||
815 strcmp(optarg, "none")== 0 ||
816 strchr(optarg, '/') != NULL) {
817 bitmap_file = optarg;
818 continue;
819 }
820 /* probable typo */
821 fprintf(stderr, Name ": bitmap file must contain a '/', or be 'internal', or 'none'\n");
822 exit(2);
823
824 case O(GROW,BitmapChunk):
825 case O(BUILD,BitmapChunk):
826 case O(CREATE,BitmapChunk): /* bitmap chunksize */
827 bitmap_chunk = strtol(optarg, &c, 10);
828 if (!optarg[0] || *c || bitmap_chunk < 0 ||
829 bitmap_chunk & (bitmap_chunk - 1)) {
830 fprintf(stderr, Name ": invalid bitmap chunksize: %s\n",
831 optarg);
832 exit(2);
833 }
834 /* convert K to B, chunk of 0K means 512B */
835 bitmap_chunk = bitmap_chunk ? bitmap_chunk * 1024 : 512;
836 continue;
837
838 case O(BUILD, WriteBehind):
839 case O(CREATE, WriteBehind): /* write-behind mode */
840 write_behind = DEFAULT_MAX_WRITE_BEHIND;
841 if (optarg) {
842 write_behind = strtol(optarg, &c, 10);
843 if (write_behind < 0 || *c ||
844 write_behind > 16383) {
845 fprintf(stderr, Name ": Invalid value for maximum outstanding write-behind writes: %s.\n\tMust be between 0 and 16383.\n", optarg);
846 exit(2);
847 }
848 }
849 continue;
850
851 case O(INCREMENTAL, 'r'):
852 rebuild_map = 1;
853 continue;
854 }
855 /* We have now processed all the valid options. Anything else is
856 * an error
857 */
858 if (option_index > 0)
859 fprintf(stderr, Name ":option --%s not valid in %s mode\n",
860 long_options[option_index].name,
861 map_num(modes, mode));
862 else
863 fprintf(stderr, Name ": option -%c not valid in %s mode\n",
864 opt, map_num(modes, mode));
865 exit(2);
866
867 }
868
869 if (print_help) {
870 char *help_text = Help;
871 if (print_help == 2)
872 help_text = OptionHelp;
873 else
874 switch (mode) {
875 case ASSEMBLE : help_text = Help_assemble; break;
876 case BUILD : help_text = Help_build; break;
877 case CREATE : help_text = Help_create; break;
878 case MANAGE : help_text = Help_manage; break;
879 case MISC : help_text = Help_misc; break;
880 case MONITOR : help_text = Help_monitor; break;
881 case GROW : help_text = Help_grow; break;
882 case INCREMENTAL:help_text= Help_incr; break;
883 }
884 fputs(help_text,stdout);
885 exit(0);
886 }
887
888 if (!mode && devs_found) {
889 mode = MISC;
890 devmode = 'Q';
891 if (devlist->disposition == 0)
892 devlist->disposition = devmode;
893 }
894 if (!mode) {
895 fputs(Usage, stderr);
896 exit(2);
897 }
898
899 if (symlinks) {
900 struct createinfo *ci = conf_get_create_info();
901
902 if (strcasecmp(symlinks, "yes") == 0)
903 ci->symlinks = 1;
904 else if (strcasecmp(symlinks, "no") == 0)
905 ci->symlinks = 0;
906 else {
907 fprintf(stderr, Name ": option --symlinks must be 'no' or 'yes'\n");
908 exit(2);
909 }
910 }
911 /* Ok, got the option parsing out of the way
912 * hopefully it's mostly right but there might be some stuff
913 * missing
914 *
915 * That is mosty checked in the per-mode stuff but...
916 *
917 * For @,B,C and A without -s, the first device listed must be an md device
918 * we check that here and open it.
919 */
920
921 if (mode==MANAGE || mode == BUILD || mode == CREATE || mode == GROW ||
922 (mode == ASSEMBLE && ! scan)) {
923 if (devs_found < 1) {
924 fprintf(stderr, Name ": an md device must be given in this mode\n");
925 exit(2);
926 }
927 if ((int)ident.super_minor == -2 && autof) {
928 fprintf(stderr, Name ": --super-minor=dev is incompatible with --auto\n");
929 exit(2);
930 }
931 if (mode == MANAGE || mode == GROW)
932 autof=1; /* Don't create */
933 mdfd = open_mddev(devlist->devname, autof);
934 if (mdfd < 0)
935 exit(1);
936 if ((int)ident.super_minor == -2) {
937 struct stat stb;
938 fstat(mdfd, &stb);
939 ident.super_minor = minor(stb.st_rdev);
940 }
941 }
942
943 if (raiddisks) {
944 if (raiddisks > max_disks) {
945 fprintf(stderr, Name ": invalid number of raid devices: %d\n",
946 raiddisks);
947 exit(2);
948 }
949 if (raiddisks == 1 && !force && level != -5) {
950 fprintf(stderr, Name ": '1' is an unusual number of drives for an array, so it is probably\n"
951 " a mistake. If you really mean it you will need to specify --force before\n"
952 " setting the number of drives.\n");
953 exit(2);
954 }
955 }
956 if (sparedisks) {
957 if ( sparedisks > max_disks - raiddisks) {
958 fprintf(stderr, Name ": invalid number of spare-devices: %d\n",
959 sparedisks);
960 exit(2);
961 }
962 }
963
964 if (homehost == NULL)
965 homehost = conf_get_homehost();
966 if (homehost && strcmp(homehost, "<system>")==0) {
967 if (gethostname(sys_hostname, sizeof(sys_hostname)) == 0) {
968 sys_hostname[sizeof(sys_hostname)-1] = 0;
969 homehost = sys_hostname;
970 }
971 }
972
973 rv = 0;
974 switch(mode) {
975 case MANAGE:
976 /* readonly, add/remove, readwrite, runstop */
977 if (readonly>0)
978 rv = Manage_ro(devlist->devname, mdfd, readonly);
979 if (!rv && devs_found>1)
980 rv = Manage_subdevs(devlist->devname, mdfd,
981 devlist->next, verbose-quiet);
982 if (!rv && readonly < 0)
983 rv = Manage_ro(devlist->devname, mdfd, readonly);
984 if (!rv && runstop)
985 rv = Manage_runstop(devlist->devname, mdfd, runstop, quiet);
986 break;
987 case ASSEMBLE:
988 if (devs_found == 1 && ident.uuid_set == 0 &&
989 ident.super_minor == UnSet && ident.name[0] == 0 && !scan ) {
990 /* Only a device has been given, so get details from config file */
991 mddev_ident_t array_ident = conf_get_ident(devlist->devname);
992 if (array_ident == NULL) {
993 fprintf(stderr, Name ": %s not identified in config file.\n",
994 devlist->devname);
995 rv |= 1;
996 } else {
997 mdfd = open_mddev(devlist->devname,
998 array_ident->autof ? array_ident->autof : autof);
999 if (mdfd < 0)
1000 rv |= 1;
1001 else {
1002 rv |= Assemble(ss, devlist->devname, mdfd, array_ident,
1003 NULL, backup_file,
1004 readonly, runstop, update, homehost, verbose-quiet, force);
1005 close(mdfd);
1006 }
1007 }
1008 } else if (!scan)
1009 rv = Assemble(ss, devlist->devname, mdfd, &ident,
1010 devlist->next, backup_file,
1011 readonly, runstop, update, homehost, verbose-quiet, force);
1012 else if (devs_found>0) {
1013 if (update && devs_found > 1) {
1014 fprintf(stderr, Name ": can only update a single array at a time\n");
1015 exit(1);
1016 }
1017 if (backup_file && devs_found > 1) {
1018 fprintf(stderr, Name ": can only assemble a single array when providing a backup file.\n");
1019 exit(1);
1020 }
1021 for (dv = devlist ; dv ; dv=dv->next) {
1022 mddev_ident_t array_ident = conf_get_ident(dv->devname);
1023 if (array_ident == NULL) {
1024 fprintf(stderr, Name ": %s not identified in config file.\n",
1025 dv->devname);
1026 rv |= 1;
1027 continue;
1028 }
1029 mdfd = open_mddev(dv->devname,
1030 array_ident->autof ?array_ident->autof : autof);
1031 if (mdfd < 0) {
1032 rv |= 1;
1033 continue;
1034 }
1035 rv |= Assemble(ss, dv->devname, mdfd, array_ident,
1036 NULL, backup_file,
1037 readonly, runstop, update, homehost, verbose-quiet, force);
1038 close(mdfd);
1039 }
1040 } else {
1041 mddev_ident_t array_list = conf_get_ident(NULL);
1042 mddev_dev_t devlist = conf_get_devs();
1043 int cnt = 0;
1044 if (devlist == NULL) {
1045 fprintf(stderr, Name ": No devices listed in conf file were found.\n");
1046 exit(1);
1047 }
1048 if (update) {
1049 fprintf(stderr, Name ": --update not meaningful with a --scan assembly.\n");
1050 exit(1);
1051 }
1052 if (backup_file) {
1053 fprintf(stderr, Name ": --backup_file not meaningful with a --scan assembly.\n");
1054 exit(1);
1055 }
1056 for (; array_list; array_list = array_list->next) {
1057 mdu_array_info_t array;
1058 mdfd = open_mddev(array_list->devname,
1059 array_list->autof ? array_list->autof : autof);
1060 if (mdfd < 0) {
1061 rv |= 1;
1062 continue;
1063 }
1064 if (ioctl(mdfd, GET_ARRAY_INFO, &array)>=0)
1065 /* already assembled, skip */
1066 cnt++;
1067 else {
1068 rv |= Assemble(ss, array_list->devname, mdfd,
1069 array_list,
1070 NULL, NULL,
1071 readonly, runstop, NULL, homehost, verbose-quiet, force);
1072 if (rv == 0) cnt++;
1073 }
1074 close(mdfd);
1075 }
1076 if (homehost) {
1077 /* Maybe we can auto-assemble something.
1078 * Repeatedly call Assemble in auto-assmble mode
1079 * until it fails
1080 */
1081 int rv2;
1082 int acnt;
1083 ident.autof = autof;
1084 do {
1085 acnt = 0;
1086 do {
1087 rv2 = Assemble(ss, NULL, -1,
1088 &ident,
1089 NULL, NULL,
1090 readonly, runstop, NULL, homehost, verbose-quiet, force);
1091 if (rv2==0) {
1092 cnt++;
1093 acnt++;
1094 }
1095 if (rv2 == 1)
1096 /* found something so even though assembly failed we
1097 * want to avoid auto-updates
1098 */
1099 auto_update_home = 0;
1100 } while (rv2!=2);
1101 /* Incase there are stacked devices, we need to go around again */
1102 } while (acnt);
1103 if (cnt == 0 && auto_update_home && homehost) {
1104 /* Nothing found, maybe we need to bootstrap homehost info */
1105 do {
1106 acnt = 0;
1107 do {
1108 rv2 = Assemble(ss, NULL, -1,
1109 &ident,
1110 NULL, NULL,
1111 readonly, runstop, "homehost", homehost, verbose-quiet, force);
1112 if (rv2==0) {
1113 cnt++;
1114 acnt++;
1115 }
1116 } while (rv2!=2);
1117 /* Incase there are stacked devices, we need to go around again */
1118 } while (acnt);
1119 }
1120 if (cnt == 0 && rv == 0) {
1121 fprintf(stderr, Name ": No arrays found in config file or automatically\n");
1122 rv = 1;
1123 }
1124 } else if (cnt == 0 && rv == 0) {
1125 fprintf(stderr, Name ": No arrays found in config file\n");
1126 rv = 1;
1127 }
1128 }
1129 break;
1130 case BUILD:
1131 if (delay == 0) delay = DEFAULT_BITMAP_DELAY;
1132 if (write_behind && !bitmap_file) {
1133 fprintf(stderr, Name ": write-behind mode requires a bitmap.\n");
1134 rv = 1;
1135 break;
1136 }
1137
1138 if (bitmap_file) {
1139 if (strcmp(bitmap_file, "internal")==0) {
1140 fprintf(stderr, Name ": 'internal' bitmaps not supported with --build\n");
1141 rv |= 1;
1142 break;
1143 }
1144 }
1145 rv = Build(devlist->devname, mdfd, chunk, level, layout,
1146 raiddisks, devlist->next, assume_clean,
1147 bitmap_file, bitmap_chunk, write_behind, delay, verbose-quiet);
1148 break;
1149 case CREATE:
1150 if (delay == 0) delay = DEFAULT_BITMAP_DELAY;
1151 if (write_behind && !bitmap_file) {
1152 fprintf(stderr, Name ": write-behind mode requires a bitmap.\n");
1153 rv = 1;
1154 break;
1155 }
1156
1157 rv = Create(ss, devlist->devname, mdfd, chunk, level, layout, size<0 ? 0 : size,
1158 raiddisks, sparedisks, ident.name, homehost,
1159 ident.uuid_set ? ident.uuid : NULL,
1160 devs_found-1, devlist->next, runstop, verbose-quiet, force, assume_clean,
1161 bitmap_file, bitmap_chunk, write_behind, delay);
1162 break;
1163 case MISC:
1164 if (devmode == 'E') {
1165 if (devlist == NULL && !scan) {
1166 fprintf(stderr, Name ": No devices to examine\n");
1167 exit(2);
1168 }
1169 if (devlist == NULL)
1170 devlist = conf_get_devs();
1171 if (devlist == NULL) {
1172 fprintf(stderr, Name ": No devices listed in %s\n", configfile?configfile:DefaultConfFile);
1173 exit(1);
1174 }
1175 if (brief && verbose)
1176 brief = 2;
1177 rv = Examine(devlist, scan?(verbose>1?0:verbose+1):brief, scan, SparcAdjust, ss, homehost);
1178 } else {
1179 if (devlist == NULL) {
1180 if (devmode=='D' && scan) {
1181 /* apply --detail to all devices in /proc/mdstat */
1182 struct mdstat_ent *ms = mdstat_read(0, 1);
1183 struct mdstat_ent *e;
1184 for (e=ms ; e ; e=e->next) {
1185 char *name = get_md_name(e->devnum);
1186
1187 if (!name) {
1188 fprintf(stderr, Name ": cannot find device file for %s\n",
1189 e->dev);
1190 continue;
1191 }
1192 rv |= Detail(name, verbose>1?0:verbose+1, test, homehost);
1193 put_md_name(name);
1194 }
1195 } else if (devmode == 'S' && scan) {
1196 /* apply --stop to all devices in /proc/mdstat */
1197 /* Due to possible stacking of devices, repeat until
1198 * nothing more can be stopped
1199 */
1200 int progress=1, err;
1201 int last = 0;
1202 do {
1203 struct mdstat_ent *ms = mdstat_read(0, 0);
1204 struct mdstat_ent *e;
1205
1206 if (!progress) last = 1;
1207 progress = 0; err = 0;
1208 for (e=ms ; e ; e=e->next) {
1209 char *name = get_md_name(e->devnum);
1210
1211 if (!name) {
1212 fprintf(stderr, Name ": cannot find device file for %s\n",
1213 e->dev);
1214 continue;
1215 }
1216 mdfd = open_mddev(name, 1);
1217 if (mdfd >= 0) {
1218 if (Manage_runstop(name, mdfd, -1, quiet?1:last?0:-1))
1219 err = 1;
1220 else
1221 progress = 1;
1222 close(mdfd);
1223 }
1224
1225 put_md_name(name);
1226 }
1227 } while (!last && err);
1228 if (err) rv |= 1;
1229 } else {
1230 fprintf(stderr, Name ": No devices given.\n");
1231 exit(2);
1232 }
1233 }
1234 for (dv=devlist ; dv; dv=dv->next) {
1235 switch(dv->disposition) {
1236 case 'D':
1237 rv |= Detail(dv->devname, brief?1+verbose:0, test, homehost); continue;
1238 case 'K': /* Zero superblock */
1239 rv |= Kill(dv->devname, force, quiet); continue;
1240 case 'Q':
1241 rv |= Query(dv->devname); continue;
1242 case 'X':
1243 rv |= ExamineBitmap(dv->devname, brief, ss); continue;
1244 case 'W':
1245 rv |= Wait(dv->devname); continue;
1246 }
1247 mdfd = open_mddev(dv->devname, 1);
1248 if (mdfd>=0) {
1249 switch(dv->disposition) {
1250 case 'R':
1251 rv |= Manage_runstop(dv->devname, mdfd, 1, quiet); break;
1252 case 'S':
1253 rv |= Manage_runstop(dv->devname, mdfd, -1, quiet); break;
1254 case 'o':
1255 rv |= Manage_ro(dv->devname, mdfd, 1); break;
1256 case 'w':
1257 rv |= Manage_ro(dv->devname, mdfd, -1); break;
1258 }
1259 close(mdfd);
1260 } else
1261 rv |= 1;
1262 }
1263 }
1264 break;
1265 case MONITOR:
1266 if (!devlist && !scan) {
1267 fprintf(stderr, Name ": Cannot monitor: need --scan or at least one device\n");
1268 rv = 1;
1269 break;
1270 }
1271 if (pidfile && !daemonise) {
1272 fprintf(stderr, Name ": Cannot write a pid file when not in daemon mode\n");
1273 rv = 1;
1274 break;
1275 }
1276 rv= Monitor(devlist, mailaddr, program,
1277 delay?delay:60, daemonise, scan, oneshot,
1278 dosyslog, test, pidfile);
1279 break;
1280
1281 case GROW:
1282 if (devs_found > 1) {
1283
1284 /* must be '-a'. */
1285 if (size >= 0 || raiddisks) {
1286 fprintf(stderr, Name ": --size, --raiddisks, and --add are exclusing in --grow mode\n");
1287 rv = 1;
1288 break;
1289 }
1290 for (dv=devlist->next; dv ; dv=dv->next) {
1291 rv = Grow_Add_device(devlist->devname, mdfd, dv->devname);
1292 if (rv)
1293 break;
1294 }
1295 } else if ((size >= 0) + (raiddisks != 0) + (layout != UnSet) + (bitmap_file != NULL)> 1) {
1296 fprintf(stderr, Name ": can change at most one of size, raiddisks, bitmap, and layout\n");
1297 rv = 1;
1298 break;
1299 } else if (layout != UnSet)
1300 rv = Manage_reconfig(devlist->devname, mdfd, layout);
1301 else if (size >= 0 || raiddisks)
1302 rv = Grow_reshape(devlist->devname, mdfd, quiet, backup_file,
1303 size, level, layout, chunk, raiddisks);
1304 else if (bitmap_file) {
1305 if (delay == 0) delay = DEFAULT_BITMAP_DELAY;
1306 rv = Grow_addbitmap(devlist->devname, mdfd, bitmap_file,
1307 bitmap_chunk, delay, write_behind, force);
1308 } else
1309 fprintf(stderr, Name ": no changes to --grow\n");
1310 break;
1311 case INCREMENTAL:
1312 if (rebuild_map) {
1313 RebuildMap();
1314 }
1315 if (scan) {
1316 if (runstop <= 0) {
1317 fprintf(stderr, Name
1318 ": --incremental --scan meaningless without --run.\n");
1319 break;
1320 }
1321 rv = IncrementalScan(verbose);
1322 }
1323 if (!devlist) {
1324 if (!rebuild_map && !scan) {
1325 fprintf(stderr, Name
1326 ": --incremental requires a device.\n");
1327 rv = 1;
1328 }
1329 break;
1330 }
1331 if (devlist->next) {
1332 fprintf(stderr, Name
1333 ": --incremental can only handle one device.\n");
1334 rv = 1;
1335 break;
1336 }
1337 rv = Incremental(devlist->devname, verbose-quiet, runstop,
1338 ss, homehost, autof);
1339 }
1340 exit(rv);
1341 }
Unnamed repository; edit this file 'description' to name the repository.