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Merge branch 'master' into scratch-3.0
[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 unsigned long long newsize;
85
86 int major_num = BITMAP_MAJOR_HI;
87
88 memset(&info, 0, sizeof(info));
89
90 if (level == UnSet) {
91 /* "ddf" and "imsm" metadata only supports one level - should possibly
92 * push this into metadata handler??
93 */
94 if (st && (st->ss == &super_ddf || st->ss == &super_imsm))
95 level = LEVEL_CONTAINER;
96 }
97
98 if (level == UnSet) {
99 fprintf(stderr,
100 Name ": a RAID level is needed to create an array.\n");
101 return 1;
102 }
103 if (raiddisks < 4 && level == 6) {
104 fprintf(stderr,
105 Name ": at least 4 raid-devices needed for level 6\n");
106 return 1;
107 }
108 if (raiddisks > 256 && level == 6) {
109 fprintf(stderr,
110 Name ": no more than 256 raid-devices supported for level 6\n");
111 return 1;
112 }
113 if (raiddisks < 2 && level >= 4) {
114 fprintf(stderr,
115 Name ": at least 2 raid-devices needed for level 4 or 5\n");
116 return 1;
117 }
118 if (level <= 0 && sparedisks) {
119 fprintf(stderr,
120 Name ": This level does not support spare devices\n");
121 return 1;
122 }
123
124 if (subdevs == 1 && strcmp(devlist->devname, "missing") != 0) {
125 /* If given a single device, it might be a container, and we can
126 * extract a device list from there
127 */
128 mdu_array_info_t inf;
129 int fd;
130
131 memset(&inf, 0, sizeof(inf));
132 fd = open(devlist->devname, O_RDONLY);
133 if (fd >= 0 &&
134 ioctl(fd, GET_ARRAY_INFO, &inf) == 0 &&
135 inf.raid_disks == 0) {
136 /* yep, looks like a container */
137 if (st) {
138 rv = st->ss->load_super(st, fd,
139 devlist->devname);
140 if (rv == 0)
141 have_container = 1;
142 } else {
143 st = guess_super(fd);
144 if (st && !(rv = st->ss->
145 load_super(st, fd,
146 devlist->devname)))
147 have_container = 1;
148 else
149 st = NULL;
150 }
151 if (have_container)
152 subdevs = raiddisks;
153 }
154 if (fd >= 0)
155 close(fd);
156 }
157 if (st && st->ss->external && sparedisks) {
158 fprintf(stderr,
159 Name ": This metadata type does not support "
160 "spare disks are create time\n");
161 return 1;
162 }
163 if (subdevs > raiddisks+sparedisks) {
164 fprintf(stderr, Name ": You have listed more devices (%d) than are in the array(%d)!\n", subdevs, raiddisks+sparedisks);
165 return 1;
166 }
167 if (!have_container && subdevs < raiddisks+sparedisks) {
168 fprintf(stderr, Name ": You haven't given enough devices (real or missing) to create this array\n");
169 return 1;
170 }
171 if (bitmap_file && level <= 0) {
172 fprintf(stderr, Name ": bitmaps not meaningful with level %s\n",
173 map_num(pers, level)?:"given");
174 return 1;
175 }
176
177 /* now set some defaults */
178 if (layout == UnSet)
179 switch(level) {
180 default: /* no layout */
181 layout = 0;
182 break;
183 case 10:
184 layout = 0x102; /* near=2, far=1 */
185 if (verbose > 0)
186 fprintf(stderr,
187 Name ": layout defaults to n1\n");
188 break;
189 case 5:
190 case 6:
191 layout = map_name(r5layout, "default");
192 if (verbose > 0)
193 fprintf(stderr,
194 Name ": layout defaults to %s\n", map_num(r5layout, layout));
195 break;
196 case LEVEL_FAULTY:
197 layout = map_name(faultylayout, "default");
198
199 if (verbose > 0)
200 fprintf(stderr,
201 Name ": layout defaults to %s\n", map_num(faultylayout, layout));
202 break;
203 }
204
205 if (level == 10)
206 /* check layout fits in array*/
207 if ((layout&255) * ((layout>>8)&255) > raiddisks) {
208 fprintf(stderr, Name ": that layout requires at least %d devices\n",
209 (layout&255) * ((layout>>8)&255));
210 return 1;
211 }
212
213 switch(level) {
214 case 4:
215 case 5:
216 case 10:
217 case 6:
218 case 0:
219 case LEVEL_LINEAR: /* linear */
220 if (chunk == 0) {
221 chunk = 64;
222 if (verbose > 0)
223 fprintf(stderr, Name ": chunk size defaults to 64K\n");
224 }
225 break;
226 case 1:
227 case LEVEL_FAULTY:
228 case LEVEL_MULTIPATH:
229 case LEVEL_CONTAINER:
230 if (chunk) {
231 chunk = 0;
232 if (verbose > 0)
233 fprintf(stderr, Name ": chunk size ignored for this level\n");
234 }
235 break;
236 default:
237 fprintf(stderr, Name ": unknown level %d\n", level);
238 return 1;
239 }
240
241 newsize = size * 2;
242 if (st && ! st->ss->validate_geometry(st, level, layout, raiddisks,
243 chunk, size*2, NULL, &newsize, verbose>=0))
244 return 1;
245 if (size == 0) {
246 size = newsize / 2;
247 if (size && verbose > 0)
248 fprintf(stderr, Name ": setting size to %lluK\n",
249 (unsigned long long)size);
250 }
251
252 /* now look at the subdevs */
253 info.array.active_disks = 0;
254 info.array.working_disks = 0;
255 dnum = 0;
256 for (dv=devlist; dv && !have_container; dv=dv->next, dnum++) {
257 char *dname = dv->devname;
258 unsigned long long freesize;
259 if (strcasecmp(dname, "missing")==0) {
260 if (first_missing > dnum)
261 first_missing = dnum;
262 if (second_missing > dnum && dnum > first_missing)
263 second_missing = dnum;
264 missing_disks ++;
265 continue;
266 }
267 info.array.working_disks++;
268 if (dnum < raiddisks)
269 info.array.active_disks++;
270 if (st == NULL) {
271 struct createinfo *ci = conf_get_create_info();
272 if (ci)
273 st = ci->supertype;
274 }
275 if (st == NULL) {
276 /* Need to choose a default metadata, which is different
277 * depending on geometry of array.
278 */
279 int i;
280 char *name = "default";
281 for(i=0; !st && superlist[i]; i++) {
282 st = superlist[i]->match_metadata_desc(name);
283 if (st && !st->ss->validate_geometry
284 (st, level, layout, raiddisks,
285 chunk, size*2, dname, &freesize,
286 verbose > 0))
287 st = NULL;
288 }
289
290 if (!st) {
291 fprintf(stderr, Name ": device %s not suitable "
292 "for any style of array\n",
293 dname);
294 exit(2);
295 }
296 if (st->ss != &super0 ||
297 st->minor_version != 90)
298 did_default = 1;
299 } else {
300 if (!st->ss->validate_geometry(st, level, layout,
301 raiddisks,
302 chunk, size*2, dname,
303 &freesize,
304 verbose > 0)) {
305
306 fprintf(stderr,
307 Name ": %s is not suitable for "
308 "this array.\n",
309 dname);
310 fail = 1;
311 continue;
312 }
313 }
314
315 freesize /= 2; /* convert to K */
316 if (chunk) {
317 /* round to chunk size */
318 freesize = freesize & ~(chunk-1);
319 }
320
321 if (size && freesize < size) {
322 fprintf(stderr, Name ": %s is smaller than given size."
323 " %lluK < %lluK + metadata\n",
324 dname, freesize, size);
325 fail = 1;
326 continue;
327 }
328 if (maxdisc == NULL || (maxdisc && freesize > maxsize)) {
329 maxdisc = dname;
330 maxsize = freesize;
331 }
332 if (mindisc ==NULL || (mindisc && freesize < minsize)) {
333 mindisc = dname;
334 minsize = freesize;
335 }
336 if (runstop != 1 || verbose >= 0) {
337 int fd = open(dname, O_RDONLY);
338 if (fd <0 ) {
339 fprintf(stderr, Name ": Cannot open %s: %s\n",
340 dname, strerror(errno));
341 fail=1;
342 continue;
343 }
344 warn |= check_ext2(fd, dname);
345 warn |= check_reiser(fd, dname);
346 warn |= check_raid(fd, dname);
347 close(fd);
348 }
349 }
350 if (have_container)
351 info.array.working_disks = raiddisks;
352 if (fail) {
353 fprintf(stderr, Name ": create aborted\n");
354 return 1;
355 }
356 if (size == 0) {
357 if (mindisc == NULL && !have_container) {
358 fprintf(stderr, Name ": no size and no drives given - aborting create.\n");
359 return 1;
360 }
361 if (level > 0 || level == LEVEL_MULTIPATH
362 || level == LEVEL_FAULTY
363 || st->ss->external ) {
364 /* size is meaningful */
365 if (!st->ss->validate_geometry(st, level, layout,
366 raiddisks,
367 chunk, minsize*2,
368 NULL, NULL, 0)) {
369 fprintf(stderr, Name ": devices too large for RAID level %d\n", level);
370 return 1;
371 }
372 size = minsize;
373 if (verbose > 0)
374 fprintf(stderr, Name ": size set to %lluK\n", size);
375 }
376 }
377 if (!have_container && level > 0 && ((maxsize-size)*100 > maxsize)) {
378 if (runstop != 1 || verbose >= 0)
379 fprintf(stderr, Name ": largest drive (%s) exceeds size (%lluK) by more than 1%%\n",
380 maxdisc, size);
381 warn = 1;
382 }
383
384 if (warn) {
385 if (runstop!= 1) {
386 if (!ask("Continue creating array? ")) {
387 fprintf(stderr, Name ": create aborted.\n");
388 return 1;
389 }
390 } else {
391 if (verbose > 0)
392 fprintf(stderr, Name ": creation continuing despite oddities due to --run\n");
393 }
394 }
395
396 /* If this is raid4/5, we want to configure the last active slot
397 * as missing, so that a reconstruct happens (faster than re-parity)
398 * FIX: Can we do this for raid6 as well?
399 */
400 if (st->ss->external == 0 &&
401 assume_clean==0 && force == 0 && first_missing >= raiddisks) {
402 switch ( level ) {
403 case 4:
404 case 5:
405 insert_point = raiddisks-1;
406 sparedisks++;
407 info.array.active_disks--;
408 missing_disks++;
409 break;
410 default:
411 break;
412 }
413 }
414 /* For raid6, if creating with 1 missing drive, make a good drive
415 * into a spare, else the create will fail
416 */
417 if (assume_clean == 0 && force == 0 && first_missing < raiddisks &&
418 st->ss->external == 0 &&
419 second_missing >= raiddisks && level == 6) {
420 insert_point = raiddisks - 1;
421 if (insert_point == first_missing)
422 insert_point--;
423 sparedisks ++;
424 info.array.active_disks--;
425 missing_disks++;
426 }
427
428 if (level <= 0 && first_missing < subdevs * 2) {
429 fprintf(stderr,
430 Name ": This level does not support missing devices\n");
431 return 1;
432 }
433
434 /* We need to create the device */
435 map_lock(&map);
436 mdfd = create_mddev(mddev, name, autof, LOCAL, chosen_name);
437 if (mdfd < 0)
438 return 1;
439 mddev = chosen_name;
440
441 vers = md_get_version(mdfd);
442 if (vers < 9000) {
443 fprintf(stderr, Name ": Create requires md driver version 0.90.0 or later\n");
444 goto abort;
445 } else {
446 mdu_array_info_t inf;
447 memset(&inf, 0, sizeof(inf));
448 ioctl(mdfd, GET_ARRAY_INFO, &inf);
449 if (inf.working_disks != 0) {
450 fprintf(stderr, Name ": another array by this name"
451 " is already running.\n");
452 goto abort;
453 }
454 }
455
456 /* Ok, lets try some ioctls */
457
458 info.array.level = level;
459 info.array.size = size;
460 info.array.raid_disks = raiddisks;
461 /* The kernel should *know* what md_minor we are dealing
462 * with, but it chooses to trust me instead. Sigh
463 */
464 info.array.md_minor = 0;
465 if (fstat(mdfd, &stb)==0)
466 info.array.md_minor = minor(stb.st_rdev);
467 info.array.not_persistent = 0;
468
469 if ( ( (level == 4 || level == 5) &&
470 (insert_point < raiddisks || first_missing < raiddisks) )
471 ||
472 ( level == 6 && (insert_point < raiddisks
473 || second_missing < raiddisks))
474 ||
475 ( level <= 0 )
476 ||
477 assume_clean
478 ) {
479 info.array.state = 1; /* clean, but one+ drive will be missing*/
480 info.resync_start = ~0ULL;
481 } else {
482 info.array.state = 0; /* not clean, but no errors */
483 info.resync_start = 0;
484 }
485 if (level == 10) {
486 /* for raid10, the bitmap size is the capacity of the array,
487 * which is array.size * raid_disks / ncopies;
488 * .. but convert to sectors.
489 */
490 int ncopies = ((layout>>8) & 255) * (layout & 255);
491 bitmapsize = (unsigned long long)size * raiddisks / ncopies * 2;
492 /* printf("bms=%llu as=%d rd=%d nc=%d\n", bitmapsize, size, raiddisks, ncopies);*/
493 } else
494 bitmapsize = (unsigned long long)size * 2;
495
496 /* There is lots of redundancy in these disk counts,
497 * raid_disks is the most meaningful value
498 * it describes the geometry of the array
499 * it is constant
500 * nr_disks is total number of used slots.
501 * it should be raid_disks+spare_disks
502 * spare_disks is the number of extra disks present
503 * see above
504 * active_disks is the number of working disks in
505 * active slots. (With raid_disks)
506 * working_disks is the total number of working disks,
507 * including spares
508 * failed_disks is the number of disks marked failed
509 *
510 * Ideally, the kernel would keep these (except raid_disks)
511 * up-to-date as we ADD_NEW_DISK, but it doesn't (yet).
512 * So for now, we assume that all raid and spare
513 * devices will be given.
514 */
515 info.array.spare_disks=sparedisks;
516 info.array.failed_disks=missing_disks;
517 info.array.nr_disks = info.array.working_disks
518 + info.array.failed_disks;
519 info.array.layout = layout;
520 info.array.chunk_size = chunk*1024;
521
522 if (name == NULL || *name == 0) {
523 /* base name on mddev */
524 /* /dev/md0 -> 0
525 * /dev/md_d0 -> d0
526 * /dev/md/1 -> 1
527 * /dev/md/d1 -> d1
528 * /dev/md/home -> home
529 * /dev/mdhome -> home
530 */
531 /* FIXME compare this with rules in create_mddev */
532 name = strrchr(mddev, '/');
533 if (name) {
534 name++;
535 if (strncmp(name, "md_d", 4)==0 &&
536 strlen(name) > 4 &&
537 isdigit(name[4]) &&
538 (name-mddev) == 5 /* /dev/ */)
539 name += 3;
540 else if (strncmp(name, "md", 2)==0 &&
541 strlen(name) > 2 &&
542 isdigit(name[2]) &&
543 (name-mddev) == 5 /* /dev/ */)
544 name += 2;
545 }
546 }
547 if (!st->ss->init_super(st, &info.array, size, name, homehost, uuid))
548 goto abort;
549
550 total_slots = info.array.nr_disks;
551 sysfs_init(&info, mdfd, 0);
552 st->ss->getinfo_super(st, &info);
553
554 if (did_default && verbose >= 0) {
555 if (is_subarray(info.text_version)) {
556 int dnum = devname2devnum(info.text_version+1);
557 char *path;
558 int mdp = get_mdp_major();
559 struct mdinfo *mdi;
560 if (dnum > 0)
561 path = map_dev(MD_MAJOR, dnum, 1);
562 else
563 path = map_dev(mdp, (-1-dnum)<< 6, 1);
564
565 mdi = sysfs_read(-1, dnum, GET_VERSION);
566
567 fprintf(stderr, Name ": Creating array inside "
568 "%s container %s\n",
569 mdi?mdi->text_version:"managed", path);
570 sysfs_free(mdi);
571 } else
572 fprintf(stderr, Name ": Defaulting to version"
573 " %s metadata\n", info.text_version);
574 }
575
576 map_update(&map, fd2devnum(mdfd), info.text_version,
577 info.uuid, chosen_name);
578 map_unlock(&map);
579
580 if (bitmap_file && vers < 9003) {
581 major_num = BITMAP_MAJOR_HOSTENDIAN;
582 #ifdef __BIG_ENDIAN
583 fprintf(stderr, Name ": Warning - bitmaps created on this kernel are not portable\n"
584 " between different architectured. Consider upgrading the Linux kernel.\n");
585 #endif
586 }
587
588 if (bitmap_file && strcmp(bitmap_file, "internal")==0) {
589 if ((vers%100) < 2) {
590 fprintf(stderr, Name ": internal bitmaps not supported by this kernel.\n");
591 goto abort;
592 }
593 if (!st->ss->add_internal_bitmap(st, &bitmap_chunk,
594 delay, write_behind,
595 bitmapsize, 1, major_num)) {
596 fprintf(stderr, Name ": Given bitmap chunk size not supported.\n");
597 goto abort;
598 }
599 bitmap_file = NULL;
600 }
601
602
603 sysfs_init(&info, mdfd, 0);
604
605 if (st->ss->external && st->subarray[0]) {
606 /* member */
607
608 /* When creating a member, we need to be careful
609 * to negotiate with mdmon properly.
610 * If it is already running, we cannot write to
611 * the devices and must ask it to do that part.
612 * If it isn't running, we write to the devices,
613 * and then start it.
614 * We hold an exclusive open on the container
615 * device to make sure mdmon doesn't exit after
616 * we checked that it is running.
617 *
618 * For now, fail if it is already running.
619 */
620 container_fd = open_dev_excl(st->container_dev);
621 if (container_fd < 0) {
622 fprintf(stderr, Name ": Cannot get exclusive "
623 "open on container - weird.\n");
624 goto abort;
625 }
626 if (mdmon_running(st->container_dev)) {
627 if (verbose)
628 fprintf(stderr, Name ": reusing mdmon "
629 "for %s.\n",
630 devnum2devname(st->container_dev));
631 st->update_tail = &st->updates;
632 } else
633 need_mdmon = 1;
634 }
635 rv = set_array_info(mdfd, st, &info);
636 if (rv) {
637 fprintf(stderr, Name ": failed to set array info for %s: %s\n",
638 mddev, strerror(errno));
639 goto abort;
640 }
641
642 if (bitmap_file) {
643 int uuid[4];
644
645 st->ss->uuid_from_super(st, uuid);
646 if (CreateBitmap(bitmap_file, force, (char*)uuid, bitmap_chunk,
647 delay, write_behind,
648 bitmapsize,
649 major_num)) {
650 goto abort;
651 }
652 bitmap_fd = open(bitmap_file, O_RDWR);
653 if (bitmap_fd < 0) {
654 fprintf(stderr, Name ": weird: %s cannot be openned\n",
655 bitmap_file);
656 goto abort;
657 }
658 if (ioctl(mdfd, SET_BITMAP_FILE, bitmap_fd) < 0) {
659 fprintf(stderr, Name ": Cannot set bitmap file for %s: %s\n",
660 mddev, strerror(errno));
661 goto abort;
662 }
663 }
664
665 infos = malloc(sizeof(*infos) * total_slots);
666
667 for (pass=1; pass <=2 ; pass++) {
668 mddev_dev_t moved_disk = NULL; /* the disk that was moved out of the insert point */
669
670 for (dnum=0, dv = devlist ; dv ;
671 dv=(dv->next)?(dv->next):moved_disk, dnum++) {
672 int fd;
673 struct stat stb;
674 struct mdinfo *inf = &infos[dnum];
675
676 if (dnum >= total_slots)
677 abort();
678 if (dnum == insert_point) {
679 moved_disk = dv;
680 continue;
681 }
682 if (strcasecmp(dv->devname, "missing")==0)
683 continue;
684 if (have_container)
685 moved_disk = NULL;
686 if (have_container && dnum < info.array.raid_disks - 1)
687 /* repeatedly use the container */
688 moved_disk = dv;
689
690 switch(pass) {
691 case 1:
692 *inf = info;
693
694 inf->disk.number = dnum;
695 inf->disk.raid_disk = dnum;
696 if (inf->disk.raid_disk < raiddisks)
697 inf->disk.state = (1<<MD_DISK_ACTIVE) |
698 (1<<MD_DISK_SYNC);
699 else
700 inf->disk.state = 0;
701
702 if (dv->writemostly == 1)
703 inf->disk.state |= (1<<MD_DISK_WRITEMOSTLY);
704
705 if (have_container)
706 fd = -1;
707 else {
708 if (st->ss->external && st->subarray[0])
709 fd = open(dv->devname, O_RDWR);
710 else
711 fd = open(dv->devname, O_RDWR|O_EXCL);
712
713 if (fd < 0) {
714 fprintf(stderr, Name ": failed to open %s "
715 "after earlier success - aborting\n",
716 dv->devname);
717 goto abort;
718 }
719 fstat(fd, &stb);
720 inf->disk.major = major(stb.st_rdev);
721 inf->disk.minor = minor(stb.st_rdev);
722 }
723 if (fd >= 0)
724 remove_partitions(fd);
725 if (st->ss->add_to_super(st, &inf->disk,
726 fd, dv->devname))
727 goto abort;
728 st->ss->getinfo_super(st, inf);
729 safe_mode_delay = inf->safe_mode_delay;
730
731 if (have_container && verbose > 0)
732 fprintf(stderr, Name ": Using %s for device %d\n",
733 map_dev(inf->disk.major,
734 inf->disk.minor,
735 0), dnum);
736
737 if (!have_container) {
738 /* getinfo_super might have lost these ... */
739 inf->disk.major = major(stb.st_rdev);
740 inf->disk.minor = minor(stb.st_rdev);
741 }
742 break;
743 case 2:
744 inf->errors = 0;
745 rv = 0;
746
747 rv = add_disk(mdfd, st, &info, inf);
748
749 if (rv) {
750 fprintf(stderr,
751 Name ": ADD_NEW_DISK for %s "
752 "failed: %s\n",
753 dv->devname, strerror(errno));
754 st->ss->free_super(st);
755 goto abort;
756 }
757 break;
758 }
759 if (!have_container &&
760 dv == moved_disk && dnum != insert_point) break;
761 }
762 if (pass == 1) {
763 st->ss->write_init_super(st);
764 flush_metadata_updates(st);
765 }
766 }
767 free(infos);
768 st->ss->free_super(st);
769
770 if (level == LEVEL_CONTAINER) {
771 /* No need to start. But we should signal udev to
772 * create links */
773 sysfs_uevent(&info, "change");
774 if (verbose >= 0)
775 fprintf(stderr, Name ": container %s prepared.\n", mddev);
776 } else if (runstop == 1 || subdevs >= raiddisks) {
777 if (st->ss->external) {
778 switch(level) {
779 case LEVEL_LINEAR:
780 case LEVEL_MULTIPATH:
781 case 0:
782 sysfs_set_str(&info, NULL, "array_state",
783 "active");
784 need_mdmon = 0;
785 break;
786 default:
787 sysfs_set_str(&info, NULL, "array_state",
788 "readonly");
789 break;
790 }
791 sysfs_set_safemode(&info, safe_mode_delay);
792 } else {
793 /* param is not actually used */
794 mdu_param_t param;
795 if (ioctl(mdfd, RUN_ARRAY, &param)) {
796 fprintf(stderr, Name ": RUN_ARRAY failed: %s\n",
797 strerror(errno));
798 Manage_runstop(mddev, mdfd, -1, 0);
799 goto abort;
800 }
801 }
802 if (verbose >= 0)
803 fprintf(stderr, Name ": array %s started.\n", mddev);
804 if (st->ss->external && st->subarray[0]) {
805 if (need_mdmon)
806 start_mdmon(st->container_dev);
807
808 ping_monitor(devnum2devname(st->container_dev));
809 close(container_fd);
810 }
811 wait_for(chosen_name);
812 } else {
813 fprintf(stderr, Name ": not starting array - not enough devices.\n");
814 }
815 close(mdfd);
816 return 0;
817
818 abort:
819 if (mdfd >= 0)
820 close(mdfd);
821 return 1;
822 }
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