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[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 first_missing = subdevs * 2;
193 second_missing = subdevs * 2;
194 insert_point = subdevs * 2;
195 }
196 }
197 if (fd >= 0)
198 close(fd);
199 }
200 if (st && st->ss->external && sparedisks) {
201 fprintf(stderr,
202 Name ": This metadata type does not support "
203 "spare disks are create time\n");
204 return 1;
205 }
206 if (subdevs > raiddisks+sparedisks) {
207 fprintf(stderr, Name ": You have listed more devices (%d) than are in the array(%d)!\n", subdevs, raiddisks+sparedisks);
208 return 1;
209 }
210 if (!have_container && subdevs < raiddisks+sparedisks) {
211 fprintf(stderr, Name ": You haven't given enough devices (real or missing) to create this array\n");
212 return 1;
213 }
214 if (bitmap_file && level <= 0) {
215 fprintf(stderr, Name ": bitmaps not meaningful with level %s\n",
216 map_num(pers, level)?:"given");
217 return 1;
218 }
219
220 /* now set some defaults */
221
222
223 if (layout == UnSet) {
224 do_default_layout = 1;
225 layout = default_layout(st, level, verbose);
226 }
227
228 if (level == 10)
229 /* check layout fits in array*/
230 if ((layout&255) * ((layout>>8)&255) > raiddisks) {
231 fprintf(stderr, Name ": that layout requires at least %d devices\n",
232 (layout&255) * ((layout>>8)&255));
233 return 1;
234 }
235
236 switch(level) {
237 case 4:
238 case 5:
239 case 10:
240 case 6:
241 case 0:
242 case LEVEL_LINEAR: /* linear */
243 if (chunk == 0) {
244 chunk = 64;
245 if (verbose > 0)
246 fprintf(stderr, Name ": chunk size defaults to 64K\n");
247 }
248 break;
249 case 1:
250 case LEVEL_FAULTY:
251 case LEVEL_MULTIPATH:
252 case LEVEL_CONTAINER:
253 if (chunk) {
254 chunk = 0;
255 if (verbose > 0)
256 fprintf(stderr, Name ": chunk size ignored for this level\n");
257 }
258 break;
259 default:
260 fprintf(stderr, Name ": unknown level %d\n", level);
261 return 1;
262 }
263
264 newsize = size * 2;
265 if (st && ! st->ss->validate_geometry(st, level, layout, raiddisks,
266 chunk, size*2, NULL, &newsize, verbose>=0))
267 return 1;
268 if (size == 0) {
269 size = newsize / 2;
270 if (size && verbose > 0)
271 fprintf(stderr, Name ": setting size to %lluK\n",
272 (unsigned long long)size);
273 }
274
275 /* now look at the subdevs */
276 info.array.active_disks = 0;
277 info.array.working_disks = 0;
278 dnum = 0;
279 for (dv=devlist; dv && !have_container; dv=dv->next, dnum++) {
280 char *dname = dv->devname;
281 unsigned long long freesize;
282 if (strcasecmp(dname, "missing")==0) {
283 if (first_missing > dnum)
284 first_missing = dnum;
285 if (second_missing > dnum && dnum > first_missing)
286 second_missing = dnum;
287 missing_disks ++;
288 continue;
289 }
290 info.array.working_disks++;
291 if (dnum < raiddisks)
292 info.array.active_disks++;
293 if (st == NULL) {
294 struct createinfo *ci = conf_get_create_info();
295 if (ci)
296 st = ci->supertype;
297 }
298 if (st == NULL) {
299 /* Need to choose a default metadata, which is different
300 * depending on geometry of array.
301 */
302 int i;
303 char *name = "default";
304 for(i=0; !st && superlist[i]; i++) {
305 st = superlist[i]->match_metadata_desc(name);
306 if (do_default_layout)
307 layout = default_layout(st, level, verbose);
308 if (st && !st->ss->validate_geometry
309 (st, level, layout, raiddisks,
310 chunk, size*2, dname, &freesize,
311 verbose > 0))
312 st = NULL;
313 }
314
315 if (!st) {
316 fprintf(stderr, Name ": device %s not suitable "
317 "for any style of array\n",
318 dname);
319 exit(2);
320 }
321 if (st->ss != &super0 ||
322 st->minor_version != 90)
323 did_default = 1;
324 } else {
325 if (do_default_layout)
326 layout = default_layout(st, level, verbose);
327 if (!st->ss->validate_geometry(st, level, layout,
328 raiddisks,
329 chunk, size*2, dname,
330 &freesize,
331 verbose > 0)) {
332
333 fprintf(stderr,
334 Name ": %s is not suitable for "
335 "this array.\n",
336 dname);
337 fail = 1;
338 continue;
339 }
340 }
341
342 freesize /= 2; /* convert to K */
343 if (chunk) {
344 /* round to chunk size */
345 freesize = freesize & ~(chunk-1);
346 }
347
348 if (size && freesize < size) {
349 fprintf(stderr, Name ": %s is smaller than given size."
350 " %lluK < %lluK + metadata\n",
351 dname, freesize, size);
352 fail = 1;
353 continue;
354 }
355 if (maxdisc == NULL || (maxdisc && freesize > maxsize)) {
356 maxdisc = dname;
357 maxsize = freesize;
358 }
359 if (mindisc ==NULL || (mindisc && freesize < minsize)) {
360 mindisc = dname;
361 minsize = freesize;
362 }
363 if (runstop != 1 || verbose >= 0) {
364 int fd = open(dname, O_RDONLY);
365 if (fd <0 ) {
366 fprintf(stderr, Name ": Cannot open %s: %s\n",
367 dname, strerror(errno));
368 fail=1;
369 continue;
370 }
371 warn |= check_ext2(fd, dname);
372 warn |= check_reiser(fd, dname);
373 warn |= check_raid(fd, dname);
374 close(fd);
375 }
376 }
377 if (have_container)
378 info.array.working_disks = raiddisks;
379 if (fail) {
380 fprintf(stderr, Name ": create aborted\n");
381 return 1;
382 }
383 if (size == 0) {
384 if (mindisc == NULL && !have_container) {
385 fprintf(stderr, Name ": no size and no drives given - aborting create.\n");
386 return 1;
387 }
388 if (level > 0 || level == LEVEL_MULTIPATH
389 || level == LEVEL_FAULTY
390 || st->ss->external ) {
391 /* size is meaningful */
392 if (!st->ss->validate_geometry(st, level, layout,
393 raiddisks,
394 chunk, minsize*2,
395 NULL, NULL, 0)) {
396 fprintf(stderr, Name ": devices too large for RAID level %d\n", level);
397 return 1;
398 }
399 size = minsize;
400 if (verbose > 0)
401 fprintf(stderr, Name ": size set to %lluK\n", size);
402 }
403 }
404 if (!have_container && level > 0 && ((maxsize-size)*100 > maxsize)) {
405 if (runstop != 1 || verbose >= 0)
406 fprintf(stderr, Name ": largest drive (%s) exceeds size (%lluK) by more than 1%%\n",
407 maxdisc, size);
408 warn = 1;
409 }
410
411 if (st->ss->detail_platform && st->ss->detail_platform(0, 1) != 0) {
412 if (runstop != 1 || verbose >= 0)
413 fprintf(stderr, Name ": %s unable to enumerate platform support\n"
414 " array may not be compatible with hardware/firmware\n",
415 st->ss->name);
416 warn = 1;
417 }
418
419 if (warn) {
420 if (runstop!= 1) {
421 if (!ask("Continue creating array? ")) {
422 fprintf(stderr, Name ": create aborted.\n");
423 return 1;
424 }
425 } else {
426 if (verbose > 0)
427 fprintf(stderr, Name ": creation continuing despite oddities due to --run\n");
428 }
429 }
430
431 /* If this is raid4/5, we want to configure the last active slot
432 * as missing, so that a reconstruct happens (faster than re-parity)
433 * FIX: Can we do this for raid6 as well?
434 */
435 if (st->ss->external == 0 &&
436 assume_clean==0 && force == 0 && first_missing >= raiddisks) {
437 switch ( level ) {
438 case 4:
439 case 5:
440 insert_point = raiddisks-1;
441 sparedisks++;
442 info.array.active_disks--;
443 missing_disks++;
444 break;
445 default:
446 break;
447 }
448 }
449 /* For raid6, if creating with 1 missing drive, make a good drive
450 * into a spare, else the create will fail
451 */
452 if (assume_clean == 0 && force == 0 && first_missing < raiddisks &&
453 st->ss->external == 0 &&
454 second_missing >= raiddisks && level == 6) {
455 insert_point = raiddisks - 1;
456 if (insert_point == first_missing)
457 insert_point--;
458 sparedisks ++;
459 info.array.active_disks--;
460 missing_disks++;
461 }
462
463 if (level <= 0 && first_missing < subdevs * 2) {
464 fprintf(stderr,
465 Name ": This level does not support missing devices\n");
466 return 1;
467 }
468
469 /* We need to create the device */
470 map_lock(&map);
471 mdfd = create_mddev(mddev, name, autof, LOCAL, chosen_name);
472 if (mdfd < 0)
473 return 1;
474 mddev = chosen_name;
475
476 vers = md_get_version(mdfd);
477 if (vers < 9000) {
478 fprintf(stderr, Name ": Create requires md driver version 0.90.0 or later\n");
479 goto abort;
480 } else {
481 mdu_array_info_t inf;
482 memset(&inf, 0, sizeof(inf));
483 ioctl(mdfd, GET_ARRAY_INFO, &inf);
484 if (inf.working_disks != 0) {
485 fprintf(stderr, Name ": another array by this name"
486 " is already running.\n");
487 goto abort;
488 }
489 }
490
491 /* Ok, lets try some ioctls */
492
493 info.array.level = level;
494 info.array.size = size;
495 info.array.raid_disks = raiddisks;
496 /* The kernel should *know* what md_minor we are dealing
497 * with, but it chooses to trust me instead. Sigh
498 */
499 info.array.md_minor = 0;
500 if (fstat(mdfd, &stb)==0)
501 info.array.md_minor = minor(stb.st_rdev);
502 info.array.not_persistent = 0;
503
504 if ( ( (level == 4 || level == 5) &&
505 (insert_point < raiddisks || first_missing < raiddisks) )
506 ||
507 ( level == 6 && (insert_point < raiddisks
508 || second_missing < raiddisks))
509 ||
510 ( level <= 0 )
511 ||
512 assume_clean
513 ) {
514 info.array.state = 1; /* clean, but one+ drive will be missing*/
515 info.resync_start = ~0ULL;
516 } else {
517 info.array.state = 0; /* not clean, but no errors */
518 info.resync_start = 0;
519 }
520 if (level == 10) {
521 /* for raid10, the bitmap size is the capacity of the array,
522 * which is array.size * raid_disks / ncopies;
523 * .. but convert to sectors.
524 */
525 int ncopies = ((layout>>8) & 255) * (layout & 255);
526 bitmapsize = (unsigned long long)size * raiddisks / ncopies * 2;
527 /* printf("bms=%llu as=%d rd=%d nc=%d\n", bitmapsize, size, raiddisks, ncopies);*/
528 } else
529 bitmapsize = (unsigned long long)size * 2;
530
531 /* There is lots of redundancy in these disk counts,
532 * raid_disks is the most meaningful value
533 * it describes the geometry of the array
534 * it is constant
535 * nr_disks is total number of used slots.
536 * it should be raid_disks+spare_disks
537 * spare_disks is the number of extra disks present
538 * see above
539 * active_disks is the number of working disks in
540 * active slots. (With raid_disks)
541 * working_disks is the total number of working disks,
542 * including spares
543 * failed_disks is the number of disks marked failed
544 *
545 * Ideally, the kernel would keep these (except raid_disks)
546 * up-to-date as we ADD_NEW_DISK, but it doesn't (yet).
547 * So for now, we assume that all raid and spare
548 * devices will be given.
549 */
550 info.array.spare_disks=sparedisks;
551 info.array.failed_disks=missing_disks;
552 info.array.nr_disks = info.array.working_disks
553 + info.array.failed_disks;
554 info.array.layout = layout;
555 info.array.chunk_size = chunk*1024;
556
557 if (name == NULL || *name == 0) {
558 /* base name on mddev */
559 /* /dev/md0 -> 0
560 * /dev/md_d0 -> d0
561 * /dev/md/1 -> 1
562 * /dev/md/d1 -> d1
563 * /dev/md/home -> home
564 * /dev/mdhome -> home
565 */
566 /* FIXME compare this with rules in create_mddev */
567 name = strrchr(mddev, '/');
568 if (name) {
569 name++;
570 if (strncmp(name, "md_d", 4)==0 &&
571 strlen(name) > 4 &&
572 isdigit(name[4]) &&
573 (name-mddev) == 5 /* /dev/ */)
574 name += 3;
575 else if (strncmp(name, "md", 2)==0 &&
576 strlen(name) > 2 &&
577 isdigit(name[2]) &&
578 (name-mddev) == 5 /* /dev/ */)
579 name += 2;
580 }
581 }
582 if (!st->ss->init_super(st, &info.array, size, name, homehost, uuid))
583 goto abort;
584
585 total_slots = info.array.nr_disks;
586 sysfs_init(&info, mdfd, 0);
587 st->ss->getinfo_super(st, &info);
588
589 if (did_default && verbose >= 0) {
590 if (is_subarray(info.text_version)) {
591 int dnum = devname2devnum(info.text_version+1);
592 char *path;
593 int mdp = get_mdp_major();
594 struct mdinfo *mdi;
595 if (dnum > 0)
596 path = map_dev(MD_MAJOR, dnum, 1);
597 else
598 path = map_dev(mdp, (-1-dnum)<< 6, 1);
599
600 mdi = sysfs_read(-1, dnum, GET_VERSION);
601
602 fprintf(stderr, Name ": Creating array inside "
603 "%s container %s\n",
604 mdi?mdi->text_version:"managed", path);
605 sysfs_free(mdi);
606 } else
607 fprintf(stderr, Name ": Defaulting to version"
608 " %s metadata\n", info.text_version);
609 }
610
611 map_update(&map, fd2devnum(mdfd), info.text_version,
612 info.uuid, chosen_name);
613 map_unlock(&map);
614
615 if (bitmap_file && vers < 9003) {
616 major_num = BITMAP_MAJOR_HOSTENDIAN;
617 #ifdef __BIG_ENDIAN
618 fprintf(stderr, Name ": Warning - bitmaps created on this kernel are not portable\n"
619 " between different architectured. Consider upgrading the Linux kernel.\n");
620 #endif
621 }
622
623 if (bitmap_file && strcmp(bitmap_file, "internal")==0) {
624 if ((vers%100) < 2) {
625 fprintf(stderr, Name ": internal bitmaps not supported by this kernel.\n");
626 goto abort;
627 }
628 if (!st->ss->add_internal_bitmap(st, &bitmap_chunk,
629 delay, write_behind,
630 bitmapsize, 1, major_num)) {
631 fprintf(stderr, Name ": Given bitmap chunk size not supported.\n");
632 goto abort;
633 }
634 bitmap_file = NULL;
635 }
636
637
638 sysfs_init(&info, mdfd, 0);
639
640 if (st->ss->external && st->subarray[0]) {
641 /* member */
642
643 /* When creating a member, we need to be careful
644 * to negotiate with mdmon properly.
645 * If it is already running, we cannot write to
646 * the devices and must ask it to do that part.
647 * If it isn't running, we write to the devices,
648 * and then start it.
649 * We hold an exclusive open on the container
650 * device to make sure mdmon doesn't exit after
651 * we checked that it is running.
652 *
653 * For now, fail if it is already running.
654 */
655 container_fd = open_dev_excl(st->container_dev);
656 if (container_fd < 0) {
657 fprintf(stderr, Name ": Cannot get exclusive "
658 "open on container - weird.\n");
659 goto abort;
660 }
661 if (mdmon_running(st->container_dev)) {
662 if (verbose)
663 fprintf(stderr, Name ": reusing mdmon "
664 "for %s.\n",
665 devnum2devname(st->container_dev));
666 st->update_tail = &st->updates;
667 } else
668 need_mdmon = 1;
669 }
670 rv = set_array_info(mdfd, st, &info);
671 if (rv) {
672 fprintf(stderr, Name ": failed to set array info for %s: %s\n",
673 mddev, strerror(errno));
674 goto abort;
675 }
676
677 if (bitmap_file) {
678 int uuid[4];
679
680 st->ss->uuid_from_super(st, uuid);
681 if (CreateBitmap(bitmap_file, force, (char*)uuid, bitmap_chunk,
682 delay, write_behind,
683 bitmapsize,
684 major_num)) {
685 goto abort;
686 }
687 bitmap_fd = open(bitmap_file, O_RDWR);
688 if (bitmap_fd < 0) {
689 fprintf(stderr, Name ": weird: %s cannot be openned\n",
690 bitmap_file);
691 goto abort;
692 }
693 if (ioctl(mdfd, SET_BITMAP_FILE, bitmap_fd) < 0) {
694 fprintf(stderr, Name ": Cannot set bitmap file for %s: %s\n",
695 mddev, strerror(errno));
696 goto abort;
697 }
698 }
699
700 infos = malloc(sizeof(*infos) * total_slots);
701
702 for (pass=1; pass <=2 ; pass++) {
703 mddev_dev_t moved_disk = NULL; /* the disk that was moved out of the insert point */
704
705 for (dnum=0, dv = devlist ; dv ;
706 dv=(dv->next)?(dv->next):moved_disk, dnum++) {
707 int fd;
708 struct stat stb;
709 struct mdinfo *inf = &infos[dnum];
710
711 if (dnum >= total_slots)
712 abort();
713 if (dnum == insert_point) {
714 moved_disk = dv;
715 continue;
716 }
717 if (strcasecmp(dv->devname, "missing")==0)
718 continue;
719 if (have_container)
720 moved_disk = NULL;
721 if (have_container && dnum < info.array.raid_disks - 1)
722 /* repeatedly use the container */
723 moved_disk = dv;
724
725 switch(pass) {
726 case 1:
727 *inf = info;
728
729 inf->disk.number = dnum;
730 inf->disk.raid_disk = dnum;
731 if (inf->disk.raid_disk < raiddisks)
732 inf->disk.state = (1<<MD_DISK_ACTIVE) |
733 (1<<MD_DISK_SYNC);
734 else
735 inf->disk.state = 0;
736
737 if (dv->writemostly == 1)
738 inf->disk.state |= (1<<MD_DISK_WRITEMOSTLY);
739
740 if (have_container)
741 fd = -1;
742 else {
743 if (st->ss->external && st->subarray[0])
744 fd = open(dv->devname, O_RDWR);
745 else
746 fd = open(dv->devname, O_RDWR|O_EXCL);
747
748 if (fd < 0) {
749 fprintf(stderr, Name ": failed to open %s "
750 "after earlier success - aborting\n",
751 dv->devname);
752 goto abort;
753 }
754 fstat(fd, &stb);
755 inf->disk.major = major(stb.st_rdev);
756 inf->disk.minor = minor(stb.st_rdev);
757 }
758 if (fd >= 0)
759 remove_partitions(fd);
760 if (st->ss->add_to_super(st, &inf->disk,
761 fd, dv->devname))
762 goto abort;
763 st->ss->getinfo_super(st, inf);
764 safe_mode_delay = inf->safe_mode_delay;
765
766 if (have_container && verbose > 0)
767 fprintf(stderr, Name ": Using %s for device %d\n",
768 map_dev(inf->disk.major,
769 inf->disk.minor,
770 0), dnum);
771
772 if (!have_container) {
773 /* getinfo_super might have lost these ... */
774 inf->disk.major = major(stb.st_rdev);
775 inf->disk.minor = minor(stb.st_rdev);
776 }
777 break;
778 case 2:
779 inf->errors = 0;
780 rv = 0;
781
782 rv = add_disk(mdfd, st, &info, inf);
783
784 if (rv) {
785 fprintf(stderr,
786 Name ": ADD_NEW_DISK for %s "
787 "failed: %s\n",
788 dv->devname, strerror(errno));
789 st->ss->free_super(st);
790 goto abort;
791 }
792 break;
793 }
794 if (!have_container &&
795 dv == moved_disk && dnum != insert_point) break;
796 }
797 if (pass == 1) {
798 st->ss->write_init_super(st);
799 flush_metadata_updates(st);
800 }
801 }
802 free(infos);
803 st->ss->free_super(st);
804
805 if (level == LEVEL_CONTAINER) {
806 /* No need to start. But we should signal udev to
807 * create links */
808 sysfs_uevent(&info, "change");
809 if (verbose >= 0)
810 fprintf(stderr, Name ": container %s prepared.\n", mddev);
811 wait_for(chosen_name);
812 } else if (runstop == 1 || subdevs >= raiddisks) {
813 if (st->ss->external) {
814 switch(level) {
815 case LEVEL_LINEAR:
816 case LEVEL_MULTIPATH:
817 case 0:
818 sysfs_set_str(&info, NULL, "array_state",
819 "active");
820 need_mdmon = 0;
821 break;
822 default:
823 sysfs_set_str(&info, NULL, "array_state",
824 "readonly");
825 break;
826 }
827 sysfs_set_safemode(&info, safe_mode_delay);
828 } else {
829 /* param is not actually used */
830 mdu_param_t param;
831 if (ioctl(mdfd, RUN_ARRAY, &param)) {
832 fprintf(stderr, Name ": RUN_ARRAY failed: %s\n",
833 strerror(errno));
834 Manage_runstop(mddev, mdfd, -1, 0);
835 goto abort;
836 }
837 }
838 if (verbose >= 0)
839 fprintf(stderr, Name ": array %s started.\n", mddev);
840 if (st->ss->external && st->subarray[0]) {
841 if (need_mdmon)
842 start_mdmon(st->container_dev);
843
844 ping_monitor(devnum2devname(st->container_dev));
845 close(container_fd);
846 }
847 wait_for(chosen_name);
848 } else {
849 fprintf(stderr, Name ": not starting array - not enough devices.\n");
850 }
851 close(mdfd);
852 return 0;
853
854 abort:
855 if (mdfd >= 0)
856 close(mdfd);
857 return 1;
858 }
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