]> git.ipfire.org Git - thirdparty/mdadm.git/blob - Create.c
projects / thirdparty / mdadm.git / blob
? search:
summary | shortlog | log | commit | commitdiff | tree
blame | history | raw | HEAD
Create: Don't optimise resync as recovery when creating raid5 in a container.
[thirdparty/mdadm.git] / Create.c
1 /*
2 * mdadm - manage Linux "md" devices aka RAID arrays.
3 *
4 * Copyright (C) 2001-2006 Neil Brown <neilb@suse.de>
5 *
6 *
7 * This program is free software; you can redistribute it and/or modify
8 * it under the terms of the GNU General Public License as published by
9 * the Free Software Foundation; either version 2 of the License, or
10 * (at your option) any later version.
11 *
12 * This program is distributed in the hope that it will be useful,
13 * but WITHOUT ANY WARRANTY; without even the implied warranty of
14 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
15 * GNU General Public License for more details.
16 *
17 * You should have received a copy of the GNU General Public License
18 * along with this program; if not, write to the Free Software
19 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
20 *
21 * Author: Neil Brown
22 * Email: <neilb@cse.unsw.edu.au>
23 * Paper: Neil Brown
24 * School of Computer Science and Engineering
25 * The University of New South Wales
26 * Sydney, 2052
27 * Australia
28 */
29
30 #include "mdadm.h"
31 #include "md_u.h"
32 #include "md_p.h"
33 #include <ctype.h>
34
35 int Create(struct supertype *st, char *mddev,
36 int chunk, int level, int layout, unsigned long long size, int raiddisks, int sparedisks,
37 char *name, char *homehost, int *uuid,
38 int subdevs, mddev_dev_t devlist,
39 int runstop, int verbose, int force, int assume_clean,
40 char *bitmap_file, int bitmap_chunk, int write_behind, int delay, int autof)
41 {
42 /*
43 * Create a new raid array.
44 *
45 * First check that necessary details are available
46 * (i.e. level, raid-disks)
47 *
48 * Then check each disk to see what might be on it
49 * and report anything interesting.
50 *
51 * If anything looks odd, and runstop not set,
52 * abort.
53 *
54 * SET_ARRAY_INFO and ADD_NEW_DISK, and
55 * if runstop==run, or raiddisks disks were used,
56 * RUN_ARRAY
57 */
58 int mdfd;
59 unsigned long long minsize=0, maxsize=0;
60 char *mindisc = NULL;
61 char *maxdisc = NULL;
62 int dnum;
63 mddev_dev_t dv;
64 int fail=0, warn=0;
65 struct stat stb;
66 int first_missing = subdevs * 2;
67 int second_missing = subdevs * 2;
68 int missing_disks = 0;
69 int insert_point = subdevs * 2; /* where to insert a missing drive */
70 int total_slots;
71 int pass;
72 int vers;
73 int rv;
74 int bitmap_fd;
75 int have_container = 0;
76 int container_fd = -1;
77 int need_mdmon = 0;
78 unsigned long long bitmapsize;
79 struct mdinfo info, *infos;
80 int did_default = 0;
81 unsigned long safe_mode_delay = 0;
82 char chosen_name[1024];
83 struct map_ent *map = NULL;
84
85 int major_num = BITMAP_MAJOR_HI;
86
87 memset(&info, 0, sizeof(info));
88
89 if (level == UnSet) {
90 /* "ddf" and "imsm" metadata only supports one level - should possibly
91 * push this into metadata handler??
92 */
93 if (st && (st->ss == &super_ddf || st->ss == &super_imsm))
94 level = LEVEL_CONTAINER;
95 }
96
97 if (level == UnSet) {
98 fprintf(stderr,
99 Name ": a RAID level is needed to create an array.\n");
100 return 1;
101 }
102 if (raiddisks < 4 && level == 6) {
103 fprintf(stderr,
104 Name ": at least 4 raid-devices needed for level 6\n");
105 return 1;
106 }
107 if (raiddisks > 256 && level == 6) {
108 fprintf(stderr,
109 Name ": no more than 256 raid-devices supported for level 6\n");
110 return 1;
111 }
112 if (raiddisks < 2 && level >= 4) {
113 fprintf(stderr,
114 Name ": at least 2 raid-devices needed for level 4 or 5\n");
115 return 1;
116 }
117 if (level <= 0 && sparedisks) {
118 fprintf(stderr,
119 Name ": This level does not support spare devices\n");
120 return 1;
121 }
122
123 if (subdevs == 1 && strcmp(devlist->devname, "missing") != 0) {
124 /* If given a single device, it might be a container, and we can
125 * extract a device list from there
126 */
127 mdu_array_info_t inf;
128 int fd;
129
130 memset(&inf, 0, sizeof(inf));
131 fd = open(devlist->devname, O_RDONLY);
132 if (fd >= 0 &&
133 ioctl(fd, GET_ARRAY_INFO, &inf) == 0 &&
134 inf.raid_disks == 0) {
135 /* yep, looks like a container */
136 if (st) {
137 rv = st->ss->load_super(st, fd,
138 devlist->devname);
139 if (rv == 0)
140 have_container = 1;
141 } else {
142 st = guess_super(fd);
143 if (st && !(rv = st->ss->
144 load_super(st, fd,
145 devlist->devname)))
146 have_container = 1;
147 else
148 st = NULL;
149 }
150 }
151 if (fd >= 0)
152 close(fd);
153 if (have_container) {
154 subdevs = 0;
155 devlist = NULL;
156 }
157 }
158 if (st && st->ss->external && sparedisks) {
159 fprintf(stderr,
160 Name ": This metadata type does not support "
161 "spare disks are create time\n");
162 return 1;
163 }
164 if (subdevs > raiddisks+sparedisks) {
165 fprintf(stderr, Name ": You have listed more devices (%d) than are in the array(%d)!\n", subdevs, raiddisks+sparedisks);
166 return 1;
167 }
168 if (!have_container && subdevs < raiddisks+sparedisks) {
169 fprintf(stderr, Name ": You haven't given enough devices (real or missing) to create this array\n");
170 return 1;
171 }
172 if (bitmap_file && level <= 0) {
173 fprintf(stderr, Name ": bitmaps not meaningful with level %s\n",
174 map_num(pers, level)?:"given");
175 return 1;
176 }
177
178 /* now set some defaults */
179 if (layout == UnSet)
180 switch(level) {
181 default: /* no layout */
182 layout = 0;
183 break;
184 case 10:
185 layout = 0x102; /* near=2, far=1 */
186 if (verbose > 0)
187 fprintf(stderr,
188 Name ": layout defaults to n1\n");
189 break;
190 case 5:
191 case 6:
192 layout = map_name(r5layout, "default");
193 if (verbose > 0)
194 fprintf(stderr,
195 Name ": layout defaults to %s\n", map_num(r5layout, layout));
196 break;
197 case LEVEL_FAULTY:
198 layout = map_name(faultylayout, "default");
199
200 if (verbose > 0)
201 fprintf(stderr,
202 Name ": layout defaults to %s\n", map_num(faultylayout, layout));
203 break;
204 }
205
206 if (level == 10)
207 /* check layout fits in array*/
208 if ((layout&255) * ((layout>>8)&255) > raiddisks) {
209 fprintf(stderr, Name ": that layout requires at least %d devices\n",
210 (layout&255) * ((layout>>8)&255));
211 return 1;
212 }
213
214 switch(level) {
215 case 4:
216 case 5:
217 case 10:
218 case 6:
219 case 0:
220 case LEVEL_LINEAR: /* linear */
221 if (chunk == 0) {
222 chunk = 64;
223 if (verbose > 0)
224 fprintf(stderr, Name ": chunk size defaults to 64K\n");
225 }
226 break;
227 case 1:
228 case LEVEL_FAULTY:
229 case LEVEL_MULTIPATH:
230 case LEVEL_CONTAINER:
231 if (chunk) {
232 chunk = 0;
233 if (verbose > 0)
234 fprintf(stderr, Name ": chunk size ignored for this level\n");
235 }
236 break;
237 default:
238 fprintf(stderr, Name ": unknown level %d\n", level);
239 return 1;
240 }
241
242 if (st && ! st->ss->validate_geometry(st, level, layout, raiddisks,
243 chunk, size, NULL, NULL, verbose>=0))
244 return 1;
245
246 /* now look at the subdevs */
247 info.array.active_disks = 0;
248 info.array.working_disks = 0;
249 dnum = 0;
250 for (dv=devlist; dv; dv=dv->next, dnum++) {
251 char *dname = dv->devname;
252 unsigned long long freesize;
253 if (strcasecmp(dname, "missing")==0) {
254 if (first_missing > dnum)
255 first_missing = dnum;
256 if (second_missing > dnum && dnum > first_missing)
257 second_missing = dnum;
258 missing_disks ++;
259 continue;
260 }
261 info.array.working_disks++;
262 if (dnum < raiddisks)
263 info.array.active_disks++;
264 if (st == NULL) {
265 struct createinfo *ci = conf_get_create_info();
266 if (ci)
267 st = ci->supertype;
268 }
269 if (st == NULL) {
270 /* Need to choose a default metadata, which is different
271 * depending on geometry of array.
272 */
273 int i;
274 char *name = "default";
275 for(i=0; !st && superlist[i]; i++) {
276 st = superlist[i]->match_metadata_desc(name);
277 if (st && !st->ss->validate_geometry
278 (st, level, layout, raiddisks,
279 chunk, size, dname, &freesize,
280 verbose > 0))
281 st = NULL;
282 }
283
284 if (!st) {
285 fprintf(stderr, Name ": device %s not suitable "
286 "for any style of array\n",
287 dname);
288 exit(2);
289 }
290 if (st->ss != &super0 ||
291 st->minor_version != 90)
292 did_default = 1;
293 } else {
294 if (!st->ss->validate_geometry(st, level, layout,
295 raiddisks,
296 chunk, size, dname,
297 &freesize,
298 verbose > 0)) {
299
300 fprintf(stderr,
301 Name ": %s is not suitable for "
302 "this array.\n",
303 dname);
304 fail = 1;
305 continue;
306 }
307 }
308
309 freesize /= 2; /* convert to K */
310 if (chunk) {
311 /* round to chunk size */
312 freesize = freesize & ~(chunk-1);
313 }
314
315 if (size && freesize < size) {
316 fprintf(stderr, Name ": %s is smaller than given size."
317 " %lluK < %lluK + metadata\n",
318 dname, freesize, size);
319 fail = 1;
320 continue;
321 }
322 if (maxdisc == NULL || (maxdisc && freesize > maxsize)) {
323 maxdisc = dname;
324 maxsize = freesize;
325 }
326 if (mindisc ==NULL || (mindisc && freesize < minsize)) {
327 mindisc = dname;
328 minsize = freesize;
329 }
330 if (runstop != 1 || verbose >= 0) {
331 int fd = open(dname, O_RDONLY);
332 if (fd <0 ) {
333 fprintf(stderr, Name ": Cannot open %s: %s\n",
334 dname, strerror(errno));
335 fail=1;
336 continue;
337 }
338 warn |= check_ext2(fd, dname);
339 warn |= check_reiser(fd, dname);
340 warn |= check_raid(fd, dname);
341 close(fd);
342 }
343 }
344 if (fail) {
345 fprintf(stderr, Name ": create aborted\n");
346 return 1;
347 }
348 if (size == 0) {
349 if (mindisc == NULL && !have_container) {
350 fprintf(stderr, Name ": no size and no drives given - aborting create.\n");
351 return 1;
352 }
353 if (level > 0 || level == LEVEL_MULTIPATH
354 || level == LEVEL_FAULTY
355 || st->ss->external ) {
356 /* size is meaningful */
357 if (!st->ss->validate_geometry(st, level, layout,
358 raiddisks,
359 chunk, minsize,
360 NULL, NULL, 0)) {
361 fprintf(stderr, Name ": devices too large for RAID level %d\n", level);
362 return 1;
363 }
364 size = minsize;
365 if (verbose > 0)
366 fprintf(stderr, Name ": size set to %lluK\n", size);
367 }
368 }
369 if (level > 0 && ((maxsize-size)*100 > maxsize)) {
370 if (runstop != 1 || verbose >= 0)
371 fprintf(stderr, Name ": largest drive (%s) exceed size (%lluK) by more than 1%%\n",
372 maxdisc, size);
373 warn = 1;
374 }
375
376 if (warn) {
377 if (runstop!= 1) {
378 if (!ask("Continue creating array? ")) {
379 fprintf(stderr, Name ": create aborted.\n");
380 return 1;
381 }
382 } else {
383 if (verbose > 0)
384 fprintf(stderr, Name ": creation continuing despite oddities due to --run\n");
385 }
386 }
387
388 /* If this is raid4/5, we want to configure the last active slot
389 * as missing, so that a reconstruct happens (faster than re-parity)
390 * FIX: Can we do this for raid6 as well?
391 */
392 if (st->ss->external == 0 &&
393 assume_clean==0 && force == 0 && first_missing >= raiddisks) {
394 switch ( level ) {
395 case 4:
396 case 5:
397 insert_point = raiddisks-1;
398 sparedisks++;
399 info.array.active_disks--;
400 missing_disks++;
401 break;
402 default:
403 break;
404 }
405 }
406 /* For raid6, if creating with 1 missing drive, make a good drive
407 * into a spare, else the create will fail
408 */
409 if (assume_clean == 0 && force == 0 && first_missing < raiddisks &&
410 st->ss->external == 0 &&
411 second_missing >= raiddisks && level == 6) {
412 insert_point = raiddisks - 1;
413 if (insert_point == first_missing)
414 insert_point--;
415 sparedisks ++;
416 info.array.active_disks--;
417 missing_disks++;
418 }
419
420 if (level <= 0 && first_missing < subdevs * 2) {
421 fprintf(stderr,
422 Name ": This level does not support missing devices\n");
423 return 1;
424 }
425
426 /* We need to create the device */
427 map_lock(&map);
428 mdfd = create_mddev(mddev, name, autof, LOCAL, chosen_name);
429 if (mdfd < 0)
430 return 1;
431
432 vers = md_get_version(mdfd);
433 if (vers < 9000) {
434 fprintf(stderr, Name ": Create requires md driver version 0.90.0 or later\n");
435 goto abort;
436 } else {
437 mdu_array_info_t inf;
438 memset(&inf, 0, sizeof(inf));
439 ioctl(mdfd, GET_ARRAY_INFO, &inf);
440 if (inf.working_disks != 0) {
441 fprintf(stderr, Name ": another array by this name"
442 " is already running.\n");
443 goto abort;
444 }
445 }
446
447 /* Ok, lets try some ioctls */
448
449 info.array.level = level;
450 info.array.size = size;
451 info.array.raid_disks = raiddisks;
452 /* The kernel should *know* what md_minor we are dealing
453 * with, but it chooses to trust me instead. Sigh
454 */
455 info.array.md_minor = 0;
456 if (fstat(mdfd, &stb)==0)
457 info.array.md_minor = minor(stb.st_rdev);
458 info.array.not_persistent = 0;
459
460 if ( ( (level == 4 || level == 5) &&
461 (insert_point < raiddisks || first_missing < raiddisks) )
462 ||
463 ( level == 6 && (insert_point < raiddisks
464 || second_missing < raiddisks))
465 ||
466 ( level <= 0 )
467 ||
468 assume_clean
469 ) {
470 info.array.state = 1; /* clean, but one+ drive will be missing*/
471 info.resync_start = ~0ULL;
472 } else {
473 info.array.state = 0; /* not clean, but no errors */
474 info.resync_start = 0;
475 }
476 if (level == 10) {
477 /* for raid10, the bitmap size is the capacity of the array,
478 * which is array.size * raid_disks / ncopies;
479 * .. but convert to sectors.
480 */
481 int ncopies = ((layout>>8) & 255) * (layout & 255);
482 bitmapsize = (unsigned long long)size * raiddisks / ncopies * 2;
483 /* printf("bms=%llu as=%d rd=%d nc=%d\n", bitmapsize, size, raiddisks, ncopies);*/
484 } else
485 bitmapsize = (unsigned long long)size * 2;
486
487 /* There is lots of redundancy in these disk counts,
488 * raid_disks is the most meaningful value
489 * it describes the geometry of the array
490 * it is constant
491 * nr_disks is total number of used slots.
492 * it should be raid_disks+spare_disks
493 * spare_disks is the number of extra disks present
494 * see above
495 * active_disks is the number of working disks in
496 * active slots. (With raid_disks)
497 * working_disks is the total number of working disks,
498 * including spares
499 * failed_disks is the number of disks marked failed
500 *
501 * Ideally, the kernel would keep these (except raid_disks)
502 * up-to-date as we ADD_NEW_DISK, but it doesn't (yet).
503 * So for now, we assume that all raid and spare
504 * devices will be given.
505 */
506 info.array.spare_disks=sparedisks;
507 info.array.failed_disks=missing_disks;
508 info.array.nr_disks = info.array.working_disks
509 + info.array.failed_disks;
510 info.array.layout = layout;
511 info.array.chunk_size = chunk*1024;
512
513 if (name == NULL || *name == 0) {
514 /* base name on mddev */
515 /* /dev/md0 -> 0
516 * /dev/md_d0 -> d0
517 * /dev/md/1 -> 1
518 * /dev/md/d1 -> d1
519 * /dev/md/home -> home
520 * /dev/mdhome -> home
521 */
522 /* FIXME compare this with rules in create_mddev */
523 name = strrchr(mddev, '/');
524 if (name) {
525 name++;
526 if (strncmp(name, "md_d", 4)==0 &&
527 strlen(name) > 4 &&
528 isdigit(name[4]) &&
529 (name-mddev) == 5 /* /dev/ */)
530 name += 3;
531 else if (strncmp(name, "md", 2)==0 &&
532 strlen(name) > 2 &&
533 isdigit(name[2]) &&
534 (name-mddev) == 5 /* /dev/ */)
535 name += 2;
536 }
537 }
538 if (!st->ss->init_super(st, &info.array, size, name, homehost, uuid))
539 goto abort;
540
541 total_slots = info.array.nr_disks;
542 sysfs_init(&info, mdfd, 0);
543 st->ss->getinfo_super(st, &info);
544
545 if (did_default && verbose >= 0) {
546 if (is_subarray(info.text_version)) {
547 int dnum = devname2devnum(info.text_version+1);
548 char *path;
549 int mdp = get_mdp_major();
550 struct mdinfo *mdi;
551 if (dnum > 0)
552 path = map_dev(MD_MAJOR, dnum, 1);
553 else
554 path = map_dev(mdp, (-1-dnum)<< 6, 1);
555
556 mdi = sysfs_read(-1, dnum, GET_VERSION);
557
558 fprintf(stderr, Name ": Creating array inside "
559 "%s container %s\n",
560 mdi?mdi->text_version:"managed", path);
561 sysfs_free(mdi);
562 } else
563 fprintf(stderr, Name ": Defaulting to version"
564 " %s metadata\n", info.text_version);
565 }
566
567 map_update(&map, fd2devnum(mdfd), info.text_version,
568 info.uuid, chosen_name);
569 map_unlock(&map);
570
571 if (bitmap_file && vers < 9003) {
572 major_num = BITMAP_MAJOR_HOSTENDIAN;
573 #ifdef __BIG_ENDIAN
574 fprintf(stderr, Name ": Warning - bitmaps created on this kernel are not portable\n"
575 " between different architectured. Consider upgrading the Linux kernel.\n");
576 #endif
577 }
578
579 if (bitmap_file && strcmp(bitmap_file, "internal")==0) {
580 if ((vers%100) < 2) {
581 fprintf(stderr, Name ": internal bitmaps not supported by this kernel.\n");
582 goto abort;
583 }
584 if (!st->ss->add_internal_bitmap(st, &bitmap_chunk,
585 delay, write_behind,
586 bitmapsize, 1, major_num)) {
587 fprintf(stderr, Name ": Given bitmap chunk size not supported.\n");
588 goto abort;
589 }
590 bitmap_file = NULL;
591 }
592
593
594 sysfs_init(&info, mdfd, 0);
595
596 if (st->ss->external && st->subarray[0]) {
597 /* member */
598
599 /* When creating a member, we need to be careful
600 * to negotiate with mdmon properly.
601 * If it is already running, we cannot write to
602 * the devices and must ask it to do that part.
603 * If it isn't running, we write to the devices,
604 * and then start it.
605 * We hold an exclusive open on the container
606 * device to make sure mdmon doesn't exit after
607 * we checked that it is running.
608 *
609 * For now, fail if it is already running.
610 */
611 container_fd = open_dev_excl(st->container_dev);
612 if (container_fd < 0) {
613 fprintf(stderr, Name ": Cannot get exclusive "
614 "open on container - weird.\n");
615 goto abort;
616 }
617 if (mdmon_running(st->container_dev)) {
618 if (verbose)
619 fprintf(stderr, Name ": reusing mdmon "
620 "for %s.\n",
621 devnum2devname(st->container_dev));
622 st->update_tail = &st->updates;
623 } else
624 need_mdmon = 1;
625 }
626 rv = set_array_info(mdfd, st, &info);
627 if (rv) {
628 fprintf(stderr, Name ": failed to set array info for %s: %s\n",
629 mddev, strerror(errno));
630 goto abort;
631 }
632
633 if (bitmap_file) {
634 int uuid[4];
635
636 st->ss->uuid_from_super(st, uuid);
637 if (CreateBitmap(bitmap_file, force, (char*)uuid, bitmap_chunk,
638 delay, write_behind,
639 bitmapsize,
640 major_num)) {
641 goto abort;
642 }
643 bitmap_fd = open(bitmap_file, O_RDWR);
644 if (bitmap_fd < 0) {
645 fprintf(stderr, Name ": weird: %s cannot be openned\n",
646 bitmap_file);
647 goto abort;
648 }
649 if (ioctl(mdfd, SET_BITMAP_FILE, bitmap_fd) < 0) {
650 fprintf(stderr, Name ": Cannot set bitmap file for %s: %s\n",
651 mddev, strerror(errno));
652 goto abort;
653 }
654 }
655
656 infos = malloc(sizeof(*infos) * total_slots);
657
658 for (pass=1; pass <=2 ; pass++) {
659 mddev_dev_t moved_disk = NULL; /* the disk that was moved out of the insert point */
660
661 for (dnum=0, dv = devlist ; dv ;
662 dv=(dv->next)?(dv->next):moved_disk, dnum++) {
663 int fd;
664 struct stat stb;
665 struct mdinfo *inf = &infos[dnum];
666
667 if (dnum >= total_slots)
668 abort();
669 if (dnum == insert_point) {
670 moved_disk = dv;
671 }
672 if (dnum == insert_point ||
673 strcasecmp(dv->devname, "missing")==0)
674 continue;
675
676 switch(pass) {
677 case 1:
678 *inf = info;
679
680 inf->disk.number = dnum;
681 inf->disk.raid_disk = dnum;
682 if (inf->disk.raid_disk < raiddisks)
683 inf->disk.state = (1<<MD_DISK_ACTIVE) |
684 (1<<MD_DISK_SYNC);
685 else
686 inf->disk.state = 0;
687
688 if (dv->writemostly == 1)
689 inf->disk.state |= (1<<MD_DISK_WRITEMOSTLY);
690
691 if (st->ss->external && st->subarray[0])
692 fd = open(dv->devname, O_RDWR);
693 else
694 fd = open(dv->devname, O_RDWR|O_EXCL);
695
696 if (fd < 0) {
697 fprintf(stderr, Name ": failed to open %s "
698 "after earlier success - aborting\n",
699 dv->devname);
700 goto abort;
701 }
702 fstat(fd, &stb);
703 inf->disk.major = major(stb.st_rdev);
704 inf->disk.minor = minor(stb.st_rdev);
705
706 remove_partitions(fd);
707 st->ss->add_to_super(st, &inf->disk,
708 fd, dv->devname);
709 st->ss->getinfo_super(st, inf);
710 safe_mode_delay = inf->safe_mode_delay;
711
712 /* getinfo_super might have lost these ... */
713 inf->disk.major = major(stb.st_rdev);
714 inf->disk.minor = minor(stb.st_rdev);
715 break;
716 case 2:
717 inf->errors = 0;
718 rv = 0;
719
720 rv = add_disk(mdfd, st, &info, inf);
721
722 if (rv) {
723 fprintf(stderr,
724 Name ": ADD_NEW_DISK for %s "
725 "failed: %s\n",
726 dv->devname, strerror(errno));
727 st->ss->free_super(st);
728 goto abort;
729 }
730 break;
731 }
732 if (dv == moved_disk && dnum != insert_point) break;
733 }
734 if (pass == 1) {
735 st->ss->write_init_super(st);
736 flush_metadata_updates(st);
737 }
738 }
739 free(infos);
740 st->ss->free_super(st);
741
742 if (level == LEVEL_CONTAINER) {
743 /* No need to start. But we should signal udev to
744 * create links */
745 sysfs_uevent(&info, "change");
746 ;
747 } else if (runstop == 1 || subdevs >= raiddisks) {
748 if (st->ss->external) {
749 switch(level) {
750 case LEVEL_LINEAR:
751 case LEVEL_MULTIPATH:
752 case 0:
753 sysfs_set_str(&info, NULL, "array_state",
754 "active");
755 need_mdmon = 0;
756 break;
757 default:
758 sysfs_set_str(&info, NULL, "array_state",
759 "readonly");
760 break;
761 }
762 sysfs_set_safemode(&info, safe_mode_delay);
763 } else {
764 /* param is not actually used */
765 mdu_param_t param;
766 if (ioctl(mdfd, RUN_ARRAY, &param)) {
767 fprintf(stderr, Name ": RUN_ARRAY failed: %s\n",
768 strerror(errno));
769 Manage_runstop(mddev, mdfd, -1, 0);
770 goto abort;
771 }
772 }
773 if (verbose >= 0)
774 fprintf(stderr, Name ": array %s started.\n", mddev);
775 if (st->ss->external && st->subarray[0]) {
776 if (need_mdmon)
777 start_mdmon(st->container_dev);
778
779 ping_monitor(devnum2devname(st->container_dev));
780 close(container_fd);
781 }
782 } else {
783 fprintf(stderr, Name ": not starting array - not enough devices.\n");
784 }
785 close(mdfd);
786 return 0;
787
788 abort:
789 if (mdfd >= 0)
790 close(mdfd);
791 return 1;
792 }
Unnamed repository; edit this file 'description' to name the repository.