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imsm: enforce "all member disks must be members of all arrays"
[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 static int default_layout(struct supertype *st, int level, int verbose)
36 {
37 int layout = UnSet;
38
39 if (st && st->ss->default_layout)
40 layout = st->ss->default_layout(level);
41
42 if (layout == UnSet)
43 switch(level) {
44 default: /* no layout */
45 layout = 0;
46 break;
47 case 10:
48 layout = 0x102; /* near=2, far=1 */
49 if (verbose > 0)
50 fprintf(stderr,
51 Name ": layout defaults to n1\n");
52 break;
53 case 5:
54 case 6:
55 layout = map_name(r5layout, "default");
56 if (verbose > 0)
57 fprintf(stderr,
58 Name ": layout defaults to %s\n", map_num(r5layout, layout));
59 break;
60 case LEVEL_FAULTY:
61 layout = map_name(faultylayout, "default");
62
63 if (verbose > 0)
64 fprintf(stderr,
65 Name ": layout defaults to %s\n", map_num(faultylayout, layout));
66 break;
67 }
68
69 return layout;
70 }
71
72
73 int Create(struct supertype *st, char *mddev,
74 int chunk, int level, int layout, unsigned long long size, int raiddisks, int sparedisks,
75 char *name, char *homehost, int *uuid,
76 int subdevs, mddev_dev_t devlist,
77 int runstop, int verbose, int force, int assume_clean,
78 char *bitmap_file, int bitmap_chunk, int write_behind, int delay, int autof)
79 {
80 /*
81 * Create a new raid array.
82 *
83 * First check that necessary details are available
84 * (i.e. level, raid-disks)
85 *
86 * Then check each disk to see what might be on it
87 * and report anything interesting.
88 *
89 * If anything looks odd, and runstop not set,
90 * abort.
91 *
92 * SET_ARRAY_INFO and ADD_NEW_DISK, and
93 * if runstop==run, or raiddisks disks were used,
94 * RUN_ARRAY
95 */
96 int mdfd;
97 unsigned long long minsize=0, maxsize=0;
98 char *mindisc = NULL;
99 char *maxdisc = NULL;
100 int dnum;
101 mddev_dev_t dv;
102 int fail=0, warn=0;
103 struct stat stb;
104 int first_missing = subdevs * 2;
105 int second_missing = subdevs * 2;
106 int missing_disks = 0;
107 int insert_point = subdevs * 2; /* where to insert a missing drive */
108 int total_slots;
109 int pass;
110 int vers;
111 int rv;
112 int bitmap_fd;
113 int have_container = 0;
114 int container_fd = -1;
115 int need_mdmon = 0;
116 unsigned long long bitmapsize;
117 struct mdinfo info, *infos;
118 int did_default = 0;
119 int do_default_layout = 0;
120 unsigned long safe_mode_delay = 0;
121 char chosen_name[1024];
122 struct map_ent *map = NULL;
123 unsigned long long newsize;
124
125 int major_num = BITMAP_MAJOR_HI;
126
127 memset(&info, 0, sizeof(info));
128
129 if (level == UnSet) {
130 /* "ddf" and "imsm" metadata only supports one level - should possibly
131 * push this into metadata handler??
132 */
133 if (st && (st->ss == &super_ddf || st->ss == &super_imsm))
134 level = LEVEL_CONTAINER;
135 }
136
137 if (level == UnSet) {
138 fprintf(stderr,
139 Name ": a RAID level is needed to create an array.\n");
140 return 1;
141 }
142 if (raiddisks < 4 && level == 6) {
143 fprintf(stderr,
144 Name ": at least 4 raid-devices needed for level 6\n");
145 return 1;
146 }
147 if (raiddisks > 256 && level == 6) {
148 fprintf(stderr,
149 Name ": no more than 256 raid-devices supported for level 6\n");
150 return 1;
151 }
152 if (raiddisks < 2 && level >= 4) {
153 fprintf(stderr,
154 Name ": at least 2 raid-devices needed for level 4 or 5\n");
155 return 1;
156 }
157 if (level <= 0 && sparedisks) {
158 fprintf(stderr,
159 Name ": This level does not support spare devices\n");
160 return 1;
161 }
162
163 if (subdevs == 1 && strcmp(devlist->devname, "missing") != 0) {
164 /* If given a single device, it might be a container, and we can
165 * extract a device list from there
166 */
167 mdu_array_info_t inf;
168 int fd;
169
170 memset(&inf, 0, sizeof(inf));
171 fd = open(devlist->devname, O_RDONLY);
172 if (fd >= 0 &&
173 ioctl(fd, GET_ARRAY_INFO, &inf) == 0 &&
174 inf.raid_disks == 0) {
175 /* yep, looks like a container */
176 if (st) {
177 rv = st->ss->load_super(st, fd,
178 devlist->devname);
179 if (rv == 0)
180 have_container = 1;
181 } else {
182 st = guess_super(fd);
183 if (st && !(rv = st->ss->
184 load_super(st, fd,
185 devlist->devname)))
186 have_container = 1;
187 else
188 st = NULL;
189 }
190 if (have_container)
191 subdevs = raiddisks;
192 }
193 if (fd >= 0)
194 close(fd);
195 }
196 if (st && st->ss->external && sparedisks) {
197 fprintf(stderr,
198 Name ": This metadata type does not support "
199 "spare disks are create time\n");
200 return 1;
201 }
202 if (subdevs > raiddisks+sparedisks) {
203 fprintf(stderr, Name ": You have listed more devices (%d) than are in the array(%d)!\n", subdevs, raiddisks+sparedisks);
204 return 1;
205 }
206 if (!have_container && subdevs < raiddisks+sparedisks) {
207 fprintf(stderr, Name ": You haven't given enough devices (real or missing) to create this array\n");
208 return 1;
209 }
210 if (bitmap_file && level <= 0) {
211 fprintf(stderr, Name ": bitmaps not meaningful with level %s\n",
212 map_num(pers, level)?:"given");
213 return 1;
214 }
215
216 /* now set some defaults */
217
218
219 if (layout == UnSet) {
220 do_default_layout = 1;
221 layout = default_layout(st, level, verbose);
222 }
223
224 if (level == 10)
225 /* check layout fits in array*/
226 if ((layout&255) * ((layout>>8)&255) > raiddisks) {
227 fprintf(stderr, Name ": that layout requires at least %d devices\n",
228 (layout&255) * ((layout>>8)&255));
229 return 1;
230 }
231
232 switch(level) {
233 case 4:
234 case 5:
235 case 10:
236 case 6:
237 case 0:
238 case LEVEL_LINEAR: /* linear */
239 if (chunk == 0) {
240 chunk = 64;
241 if (verbose > 0)
242 fprintf(stderr, Name ": chunk size defaults to 64K\n");
243 }
244 break;
245 case 1:
246 case LEVEL_FAULTY:
247 case LEVEL_MULTIPATH:
248 case LEVEL_CONTAINER:
249 if (chunk) {
250 chunk = 0;
251 if (verbose > 0)
252 fprintf(stderr, Name ": chunk size ignored for this level\n");
253 }
254 break;
255 default:
256 fprintf(stderr, Name ": unknown level %d\n", level);
257 return 1;
258 }
259
260 newsize = size * 2;
261 if (st && ! st->ss->validate_geometry(st, level, layout, raiddisks,
262 chunk, size*2, NULL, &newsize, verbose>=0))
263 return 1;
264 if (size == 0) {
265 size = newsize / 2;
266 if (size && verbose > 0)
267 fprintf(stderr, Name ": setting size to %lluK\n",
268 (unsigned long long)size);
269 }
270
271 /* now look at the subdevs */
272 info.array.active_disks = 0;
273 info.array.working_disks = 0;
274 dnum = 0;
275 for (dv=devlist; dv && !have_container; dv=dv->next, dnum++) {
276 char *dname = dv->devname;
277 unsigned long long freesize;
278 if (strcasecmp(dname, "missing")==0) {
279 if (first_missing > dnum)
280 first_missing = dnum;
281 if (second_missing > dnum && dnum > first_missing)
282 second_missing = dnum;
283 missing_disks ++;
284 continue;
285 }
286 info.array.working_disks++;
287 if (dnum < raiddisks)
288 info.array.active_disks++;
289 if (st == NULL) {
290 struct createinfo *ci = conf_get_create_info();
291 if (ci)
292 st = ci->supertype;
293 }
294 if (st == NULL) {
295 /* Need to choose a default metadata, which is different
296 * depending on geometry of array.
297 */
298 int i;
299 char *name = "default";
300 for(i=0; !st && superlist[i]; i++) {
301 st = superlist[i]->match_metadata_desc(name);
302 if (do_default_layout)
303 layout = default_layout(st, level, verbose);
304 if (st && !st->ss->validate_geometry
305 (st, level, layout, raiddisks,
306 chunk, size*2, dname, &freesize,
307 verbose > 0))
308 st = NULL;
309 }
310
311 if (!st) {
312 fprintf(stderr, Name ": device %s not suitable "
313 "for any style of array\n",
314 dname);
315 exit(2);
316 }
317 if (st->ss != &super0 ||
318 st->minor_version != 90)
319 did_default = 1;
320 } else {
321 if (do_default_layout)
322 layout = default_layout(st, level, verbose);
323 if (!st->ss->validate_geometry(st, level, layout,
324 raiddisks,
325 chunk, size*2, dname,
326 &freesize,
327 verbose > 0)) {
328
329 fprintf(stderr,
330 Name ": %s is not suitable for "
331 "this array.\n",
332 dname);
333 fail = 1;
334 continue;
335 }
336 }
337
338 freesize /= 2; /* convert to K */
339 if (chunk) {
340 /* round to chunk size */
341 freesize = freesize & ~(chunk-1);
342 }
343
344 if (size && freesize < size) {
345 fprintf(stderr, Name ": %s is smaller than given size."
346 " %lluK < %lluK + metadata\n",
347 dname, freesize, size);
348 fail = 1;
349 continue;
350 }
351 if (maxdisc == NULL || (maxdisc && freesize > maxsize)) {
352 maxdisc = dname;
353 maxsize = freesize;
354 }
355 if (mindisc ==NULL || (mindisc && freesize < minsize)) {
356 mindisc = dname;
357 minsize = freesize;
358 }
359 if (runstop != 1 || verbose >= 0) {
360 int fd = open(dname, O_RDONLY);
361 if (fd <0 ) {
362 fprintf(stderr, Name ": Cannot open %s: %s\n",
363 dname, strerror(errno));
364 fail=1;
365 continue;
366 }
367 warn |= check_ext2(fd, dname);
368 warn |= check_reiser(fd, dname);
369 warn |= check_raid(fd, dname);
370 close(fd);
371 }
372 }
373 if (have_container)
374 info.array.working_disks = raiddisks;
375 if (fail) {
376 fprintf(stderr, Name ": create aborted\n");
377 return 1;
378 }
379 if (size == 0) {
380 if (mindisc == NULL && !have_container) {
381 fprintf(stderr, Name ": no size and no drives given - aborting create.\n");
382 return 1;
383 }
384 if (level > 0 || level == LEVEL_MULTIPATH
385 || level == LEVEL_FAULTY
386 || st->ss->external ) {
387 /* size is meaningful */
388 if (!st->ss->validate_geometry(st, level, layout,
389 raiddisks,
390 chunk, minsize*2,
391 NULL, NULL, 0)) {
392 fprintf(stderr, Name ": devices too large for RAID level %d\n", level);
393 return 1;
394 }
395 size = minsize;
396 if (verbose > 0)
397 fprintf(stderr, Name ": size set to %lluK\n", size);
398 }
399 }
400 if (!have_container && level > 0 && ((maxsize-size)*100 > maxsize)) {
401 if (runstop != 1 || verbose >= 0)
402 fprintf(stderr, Name ": largest drive (%s) exceeds size (%lluK) by more than 1%%\n",
403 maxdisc, size);
404 warn = 1;
405 }
406
407 if (warn) {
408 if (runstop!= 1) {
409 if (!ask("Continue creating array? ")) {
410 fprintf(stderr, Name ": create aborted.\n");
411 return 1;
412 }
413 } else {
414 if (verbose > 0)
415 fprintf(stderr, Name ": creation continuing despite oddities due to --run\n");
416 }
417 }
418
419 /* If this is raid4/5, we want to configure the last active slot
420 * as missing, so that a reconstruct happens (faster than re-parity)
421 * FIX: Can we do this for raid6 as well?
422 */
423 if (st->ss->external == 0 &&
424 assume_clean==0 && force == 0 && first_missing >= raiddisks) {
425 switch ( level ) {
426 case 4:
427 case 5:
428 insert_point = raiddisks-1;
429 sparedisks++;
430 info.array.active_disks--;
431 missing_disks++;
432 break;
433 default:
434 break;
435 }
436 }
437 /* For raid6, if creating with 1 missing drive, make a good drive
438 * into a spare, else the create will fail
439 */
440 if (assume_clean == 0 && force == 0 && first_missing < raiddisks &&
441 st->ss->external == 0 &&
442 second_missing >= raiddisks && level == 6) {
443 insert_point = raiddisks - 1;
444 if (insert_point == first_missing)
445 insert_point--;
446 sparedisks ++;
447 info.array.active_disks--;
448 missing_disks++;
449 }
450
451 if (level <= 0 && first_missing < subdevs * 2) {
452 fprintf(stderr,
453 Name ": This level does not support missing devices\n");
454 return 1;
455 }
456
457 /* We need to create the device */
458 map_lock(&map);
459 mdfd = create_mddev(mddev, name, autof, LOCAL, chosen_name);
460 if (mdfd < 0)
461 return 1;
462 mddev = chosen_name;
463
464 vers = md_get_version(mdfd);
465 if (vers < 9000) {
466 fprintf(stderr, Name ": Create requires md driver version 0.90.0 or later\n");
467 goto abort;
468 } else {
469 mdu_array_info_t inf;
470 memset(&inf, 0, sizeof(inf));
471 ioctl(mdfd, GET_ARRAY_INFO, &inf);
472 if (inf.working_disks != 0) {
473 fprintf(stderr, Name ": another array by this name"
474 " is already running.\n");
475 goto abort;
476 }
477 }
478
479 /* Ok, lets try some ioctls */
480
481 info.array.level = level;
482 info.array.size = size;
483 info.array.raid_disks = raiddisks;
484 /* The kernel should *know* what md_minor we are dealing
485 * with, but it chooses to trust me instead. Sigh
486 */
487 info.array.md_minor = 0;
488 if (fstat(mdfd, &stb)==0)
489 info.array.md_minor = minor(stb.st_rdev);
490 info.array.not_persistent = 0;
491
492 if ( ( (level == 4 || level == 5) &&
493 (insert_point < raiddisks || first_missing < raiddisks) )
494 ||
495 ( level == 6 && (insert_point < raiddisks
496 || second_missing < raiddisks))
497 ||
498 ( level <= 0 )
499 ||
500 assume_clean
501 ) {
502 info.array.state = 1; /* clean, but one+ drive will be missing*/
503 info.resync_start = ~0ULL;
504 } else {
505 info.array.state = 0; /* not clean, but no errors */
506 info.resync_start = 0;
507 }
508 if (level == 10) {
509 /* for raid10, the bitmap size is the capacity of the array,
510 * which is array.size * raid_disks / ncopies;
511 * .. but convert to sectors.
512 */
513 int ncopies = ((layout>>8) & 255) * (layout & 255);
514 bitmapsize = (unsigned long long)size * raiddisks / ncopies * 2;
515 /* printf("bms=%llu as=%d rd=%d nc=%d\n", bitmapsize, size, raiddisks, ncopies);*/
516 } else
517 bitmapsize = (unsigned long long)size * 2;
518
519 /* There is lots of redundancy in these disk counts,
520 * raid_disks is the most meaningful value
521 * it describes the geometry of the array
522 * it is constant
523 * nr_disks is total number of used slots.
524 * it should be raid_disks+spare_disks
525 * spare_disks is the number of extra disks present
526 * see above
527 * active_disks is the number of working disks in
528 * active slots. (With raid_disks)
529 * working_disks is the total number of working disks,
530 * including spares
531 * failed_disks is the number of disks marked failed
532 *
533 * Ideally, the kernel would keep these (except raid_disks)
534 * up-to-date as we ADD_NEW_DISK, but it doesn't (yet).
535 * So for now, we assume that all raid and spare
536 * devices will be given.
537 */
538 info.array.spare_disks=sparedisks;
539 info.array.failed_disks=missing_disks;
540 info.array.nr_disks = info.array.working_disks
541 + info.array.failed_disks;
542 info.array.layout = layout;
543 info.array.chunk_size = chunk*1024;
544
545 if (name == NULL || *name == 0) {
546 /* base name on mddev */
547 /* /dev/md0 -> 0
548 * /dev/md_d0 -> d0
549 * /dev/md/1 -> 1
550 * /dev/md/d1 -> d1
551 * /dev/md/home -> home
552 * /dev/mdhome -> home
553 */
554 /* FIXME compare this with rules in create_mddev */
555 name = strrchr(mddev, '/');
556 if (name) {
557 name++;
558 if (strncmp(name, "md_d", 4)==0 &&
559 strlen(name) > 4 &&
560 isdigit(name[4]) &&
561 (name-mddev) == 5 /* /dev/ */)
562 name += 3;
563 else if (strncmp(name, "md", 2)==0 &&
564 strlen(name) > 2 &&
565 isdigit(name[2]) &&
566 (name-mddev) == 5 /* /dev/ */)
567 name += 2;
568 }
569 }
570 if (!st->ss->init_super(st, &info.array, size, name, homehost, uuid))
571 goto abort;
572
573 total_slots = info.array.nr_disks;
574 sysfs_init(&info, mdfd, 0);
575 st->ss->getinfo_super(st, &info);
576
577 if (did_default && verbose >= 0) {
578 if (is_subarray(info.text_version)) {
579 int dnum = devname2devnum(info.text_version+1);
580 char *path;
581 int mdp = get_mdp_major();
582 struct mdinfo *mdi;
583 if (dnum > 0)
584 path = map_dev(MD_MAJOR, dnum, 1);
585 else
586 path = map_dev(mdp, (-1-dnum)<< 6, 1);
587
588 mdi = sysfs_read(-1, dnum, GET_VERSION);
589
590 fprintf(stderr, Name ": Creating array inside "
591 "%s container %s\n",
592 mdi?mdi->text_version:"managed", path);
593 sysfs_free(mdi);
594 } else
595 fprintf(stderr, Name ": Defaulting to version"
596 " %s metadata\n", info.text_version);
597 }
598
599 map_update(&map, fd2devnum(mdfd), info.text_version,
600 info.uuid, chosen_name);
601 map_unlock(&map);
602
603 if (bitmap_file && vers < 9003) {
604 major_num = BITMAP_MAJOR_HOSTENDIAN;
605 #ifdef __BIG_ENDIAN
606 fprintf(stderr, Name ": Warning - bitmaps created on this kernel are not portable\n"
607 " between different architectured. Consider upgrading the Linux kernel.\n");
608 #endif
609 }
610
611 if (bitmap_file && strcmp(bitmap_file, "internal")==0) {
612 if ((vers%100) < 2) {
613 fprintf(stderr, Name ": internal bitmaps not supported by this kernel.\n");
614 goto abort;
615 }
616 if (!st->ss->add_internal_bitmap(st, &bitmap_chunk,
617 delay, write_behind,
618 bitmapsize, 1, major_num)) {
619 fprintf(stderr, Name ": Given bitmap chunk size not supported.\n");
620 goto abort;
621 }
622 bitmap_file = NULL;
623 }
624
625
626 sysfs_init(&info, mdfd, 0);
627
628 if (st->ss->external && st->subarray[0]) {
629 /* member */
630
631 /* When creating a member, we need to be careful
632 * to negotiate with mdmon properly.
633 * If it is already running, we cannot write to
634 * the devices and must ask it to do that part.
635 * If it isn't running, we write to the devices,
636 * and then start it.
637 * We hold an exclusive open on the container
638 * device to make sure mdmon doesn't exit after
639 * we checked that it is running.
640 *
641 * For now, fail if it is already running.
642 */
643 container_fd = open_dev_excl(st->container_dev);
644 if (container_fd < 0) {
645 fprintf(stderr, Name ": Cannot get exclusive "
646 "open on container - weird.\n");
647 goto abort;
648 }
649 if (mdmon_running(st->container_dev)) {
650 if (verbose)
651 fprintf(stderr, Name ": reusing mdmon "
652 "for %s.\n",
653 devnum2devname(st->container_dev));
654 st->update_tail = &st->updates;
655 } else
656 need_mdmon = 1;
657 }
658 rv = set_array_info(mdfd, st, &info);
659 if (rv) {
660 fprintf(stderr, Name ": failed to set array info for %s: %s\n",
661 mddev, strerror(errno));
662 goto abort;
663 }
664
665 if (bitmap_file) {
666 int uuid[4];
667
668 st->ss->uuid_from_super(st, uuid);
669 if (CreateBitmap(bitmap_file, force, (char*)uuid, bitmap_chunk,
670 delay, write_behind,
671 bitmapsize,
672 major_num)) {
673 goto abort;
674 }
675 bitmap_fd = open(bitmap_file, O_RDWR);
676 if (bitmap_fd < 0) {
677 fprintf(stderr, Name ": weird: %s cannot be openned\n",
678 bitmap_file);
679 goto abort;
680 }
681 if (ioctl(mdfd, SET_BITMAP_FILE, bitmap_fd) < 0) {
682 fprintf(stderr, Name ": Cannot set bitmap file for %s: %s\n",
683 mddev, strerror(errno));
684 goto abort;
685 }
686 }
687
688 infos = malloc(sizeof(*infos) * total_slots);
689
690 for (pass=1; pass <=2 ; pass++) {
691 mddev_dev_t moved_disk = NULL; /* the disk that was moved out of the insert point */
692
693 for (dnum=0, dv = devlist ; dv ;
694 dv=(dv->next)?(dv->next):moved_disk, dnum++) {
695 int fd;
696 struct stat stb;
697 struct mdinfo *inf = &infos[dnum];
698
699 if (dnum >= total_slots)
700 abort();
701 if (dnum == insert_point) {
702 moved_disk = dv;
703 continue;
704 }
705 if (strcasecmp(dv->devname, "missing")==0)
706 continue;
707 if (have_container)
708 moved_disk = NULL;
709 if (have_container && dnum < info.array.raid_disks - 1)
710 /* repeatedly use the container */
711 moved_disk = dv;
712
713 switch(pass) {
714 case 1:
715 *inf = info;
716
717 inf->disk.number = dnum;
718 inf->disk.raid_disk = dnum;
719 if (inf->disk.raid_disk < raiddisks)
720 inf->disk.state = (1<<MD_DISK_ACTIVE) |
721 (1<<MD_DISK_SYNC);
722 else
723 inf->disk.state = 0;
724
725 if (dv->writemostly == 1)
726 inf->disk.state |= (1<<MD_DISK_WRITEMOSTLY);
727
728 if (have_container)
729 fd = -1;
730 else {
731 if (st->ss->external && st->subarray[0])
732 fd = open(dv->devname, O_RDWR);
733 else
734 fd = open(dv->devname, O_RDWR|O_EXCL);
735
736 if (fd < 0) {
737 fprintf(stderr, Name ": failed to open %s "
738 "after earlier success - aborting\n",
739 dv->devname);
740 goto abort;
741 }
742 fstat(fd, &stb);
743 inf->disk.major = major(stb.st_rdev);
744 inf->disk.minor = minor(stb.st_rdev);
745 }
746 if (fd >= 0)
747 remove_partitions(fd);
748 if (st->ss->add_to_super(st, &inf->disk,
749 fd, dv->devname))
750 goto abort;
751 st->ss->getinfo_super(st, inf);
752 safe_mode_delay = inf->safe_mode_delay;
753
754 if (have_container && verbose > 0)
755 fprintf(stderr, Name ": Using %s for device %d\n",
756 map_dev(inf->disk.major,
757 inf->disk.minor,
758 0), dnum);
759
760 if (!have_container) {
761 /* getinfo_super might have lost these ... */
762 inf->disk.major = major(stb.st_rdev);
763 inf->disk.minor = minor(stb.st_rdev);
764 }
765 break;
766 case 2:
767 inf->errors = 0;
768 rv = 0;
769
770 rv = add_disk(mdfd, st, &info, inf);
771
772 if (rv) {
773 fprintf(stderr,
774 Name ": ADD_NEW_DISK for %s "
775 "failed: %s\n",
776 dv->devname, strerror(errno));
777 st->ss->free_super(st);
778 goto abort;
779 }
780 break;
781 }
782 if (!have_container &&
783 dv == moved_disk && dnum != insert_point) break;
784 }
785 if (pass == 1) {
786 st->ss->write_init_super(st);
787 flush_metadata_updates(st);
788 }
789 }
790 free(infos);
791 st->ss->free_super(st);
792
793 if (level == LEVEL_CONTAINER) {
794 /* No need to start. But we should signal udev to
795 * create links */
796 sysfs_uevent(&info, "change");
797 if (verbose >= 0)
798 fprintf(stderr, Name ": container %s prepared.\n", mddev);
799 } else if (runstop == 1 || subdevs >= raiddisks) {
800 if (st->ss->external) {
801 switch(level) {
802 case LEVEL_LINEAR:
803 case LEVEL_MULTIPATH:
804 case 0:
805 sysfs_set_str(&info, NULL, "array_state",
806 "active");
807 need_mdmon = 0;
808 break;
809 default:
810 sysfs_set_str(&info, NULL, "array_state",
811 "readonly");
812 break;
813 }
814 sysfs_set_safemode(&info, safe_mode_delay);
815 } else {
816 /* param is not actually used */
817 mdu_param_t param;
818 if (ioctl(mdfd, RUN_ARRAY, &param)) {
819 fprintf(stderr, Name ": RUN_ARRAY failed: %s\n",
820 strerror(errno));
821 Manage_runstop(mddev, mdfd, -1, 0);
822 goto abort;
823 }
824 }
825 if (verbose >= 0)
826 fprintf(stderr, Name ": array %s started.\n", mddev);
827 if (st->ss->external && st->subarray[0]) {
828 if (need_mdmon)
829 start_mdmon(st->container_dev);
830
831 ping_monitor(devnum2devname(st->container_dev));
832 close(container_fd);
833 }
834 wait_for(chosen_name);
835 } else {
836 fprintf(stderr, Name ": not starting array - not enough devices.\n");
837 }
838 close(mdfd);
839 return 0;
840
841 abort:
842 if (mdfd >= 0)
843 close(mdfd);
844 return 1;
845 }
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