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conditionally update uuids in the map file after Create()
[thirdparty/mdadm.git] / Create.c
1 /*
2 * mdadm - manage Linux "md" devices aka RAID arrays.
3 *
4 * Copyright (C) 2001-2009 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@suse.de>
23 */
24
25 #include "mdadm.h"
26 #include "md_u.h"
27 #include "md_p.h"
28 #include <ctype.h>
29
30 static int default_layout(struct supertype *st, int level, int verbose)
31 {
32 int layout = UnSet;
33
34 if (st && st->ss->default_layout)
35 layout = st->ss->default_layout(level);
36
37 if (layout == UnSet)
38 switch(level) {
39 default: /* no layout */
40 layout = 0;
41 break;
42 case 10:
43 layout = 0x102; /* near=2, far=1 */
44 if (verbose > 0)
45 fprintf(stderr,
46 Name ": layout defaults to n1\n");
47 break;
48 case 5:
49 case 6:
50 layout = map_name(r5layout, "default");
51 if (verbose > 0)
52 fprintf(stderr,
53 Name ": layout defaults to %s\n", map_num(r5layout, layout));
54 break;
55 case LEVEL_FAULTY:
56 layout = map_name(faultylayout, "default");
57
58 if (verbose > 0)
59 fprintf(stderr,
60 Name ": layout defaults to %s\n", map_num(faultylayout, layout));
61 break;
62 }
63
64 return layout;
65 }
66
67
68 int Create(struct supertype *st, char *mddev,
69 int chunk, int level, int layout, unsigned long long size, int raiddisks, int sparedisks,
70 char *name, char *homehost, int *uuid,
71 int subdevs, mddev_dev_t devlist,
72 int runstop, int verbose, int force, int assume_clean,
73 char *bitmap_file, int bitmap_chunk, int write_behind, int delay, int autof)
74 {
75 /*
76 * Create a new raid array.
77 *
78 * First check that necessary details are available
79 * (i.e. level, raid-disks)
80 *
81 * Then check each disk to see what might be on it
82 * and report anything interesting.
83 *
84 * If anything looks odd, and runstop not set,
85 * abort.
86 *
87 * SET_ARRAY_INFO and ADD_NEW_DISK, and
88 * if runstop==run, or raiddisks disks were used,
89 * RUN_ARRAY
90 */
91 int mdfd;
92 unsigned long long minsize=0, maxsize=0;
93 char *mindisc = NULL;
94 char *maxdisc = NULL;
95 int dnum;
96 mddev_dev_t dv;
97 int fail=0, warn=0;
98 struct stat stb;
99 int first_missing = subdevs * 2;
100 int second_missing = subdevs * 2;
101 int missing_disks = 0;
102 int insert_point = subdevs * 2; /* where to insert a missing drive */
103 int total_slots;
104 int pass;
105 int vers;
106 int rv;
107 int bitmap_fd;
108 int have_container = 0;
109 int container_fd = -1;
110 int need_mdmon = 0;
111 unsigned long long bitmapsize;
112 struct mdinfo info, *infos;
113 int did_default = 0;
114 int do_default_layout = 0;
115 unsigned long safe_mode_delay = 0;
116 char chosen_name[1024];
117 struct map_ent *map = NULL;
118 unsigned long long newsize;
119
120 int major_num = BITMAP_MAJOR_HI;
121
122 memset(&info, 0, sizeof(info));
123
124 if (level == UnSet) {
125 /* "ddf" and "imsm" metadata only supports one level - should possibly
126 * push this into metadata handler??
127 */
128 if (st && (st->ss == &super_ddf || st->ss == &super_imsm))
129 level = LEVEL_CONTAINER;
130 }
131
132 if (level == UnSet) {
133 fprintf(stderr,
134 Name ": a RAID level is needed to create an array.\n");
135 return 1;
136 }
137 if (raiddisks < 4 && level == 6) {
138 fprintf(stderr,
139 Name ": at least 4 raid-devices needed for level 6\n");
140 return 1;
141 }
142 if (raiddisks > 256 && level == 6) {
143 fprintf(stderr,
144 Name ": no more than 256 raid-devices supported for level 6\n");
145 return 1;
146 }
147 if (raiddisks < 2 && level >= 4) {
148 fprintf(stderr,
149 Name ": at least 2 raid-devices needed for level 4 or 5\n");
150 return 1;
151 }
152 if (level <= 0 && sparedisks) {
153 fprintf(stderr,
154 Name ": This level does not support spare devices\n");
155 return 1;
156 }
157
158 if (subdevs == 1 && strcmp(devlist->devname, "missing") != 0) {
159 /* If given a single device, it might be a container, and we can
160 * extract a device list from there
161 */
162 mdu_array_info_t inf;
163 int fd;
164
165 memset(&inf, 0, sizeof(inf));
166 fd = open(devlist->devname, O_RDONLY);
167 if (fd >= 0 &&
168 ioctl(fd, GET_ARRAY_INFO, &inf) == 0 &&
169 inf.raid_disks == 0) {
170 /* yep, looks like a container */
171 if (st) {
172 rv = st->ss->load_super(st, fd,
173 devlist->devname);
174 if (rv == 0)
175 have_container = 1;
176 } else {
177 st = guess_super(fd);
178 if (st && !(rv = st->ss->
179 load_super(st, fd,
180 devlist->devname)))
181 have_container = 1;
182 else
183 st = NULL;
184 }
185 if (have_container) {
186 subdevs = raiddisks;
187 first_missing = subdevs * 2;
188 second_missing = subdevs * 2;
189 insert_point = subdevs * 2;
190 }
191 }
192 if (fd >= 0)
193 close(fd);
194 }
195 if (st && st->ss->external && sparedisks) {
196 fprintf(stderr,
197 Name ": This metadata type does not support "
198 "spare disks are create time\n");
199 return 1;
200 }
201 if (subdevs > raiddisks+sparedisks) {
202 fprintf(stderr, Name ": You have listed more devices (%d) than are in the array(%d)!\n", subdevs, raiddisks+sparedisks);
203 return 1;
204 }
205 if (!have_container && subdevs < raiddisks+sparedisks) {
206 fprintf(stderr, Name ": You haven't given enough devices (real or missing) to create this array\n");
207 return 1;
208 }
209 if (bitmap_file && level <= 0) {
210 fprintf(stderr, Name ": bitmaps not meaningful with level %s\n",
211 map_num(pers, level)?:"given");
212 return 1;
213 }
214
215 /* now set some defaults */
216
217
218 if (layout == UnSet) {
219 do_default_layout = 1;
220 layout = default_layout(st, level, verbose);
221 }
222
223 if (level == 10)
224 /* check layout fits in array*/
225 if ((layout&255) * ((layout>>8)&255) > raiddisks) {
226 fprintf(stderr, Name ": that layout requires at least %d devices\n",
227 (layout&255) * ((layout>>8)&255));
228 return 1;
229 }
230
231 switch(level) {
232 case 4:
233 case 5:
234 case 10:
235 case 6:
236 case 0:
237 case LEVEL_LINEAR: /* linear */
238 if (chunk == 0) {
239 chunk = 64;
240 if (verbose > 0)
241 fprintf(stderr, Name ": chunk size defaults to 64K\n");
242 }
243 break;
244 case 1:
245 case LEVEL_FAULTY:
246 case LEVEL_MULTIPATH:
247 case LEVEL_CONTAINER:
248 if (chunk) {
249 chunk = 0;
250 if (verbose > 0)
251 fprintf(stderr, Name ": chunk size ignored for this level\n");
252 }
253 break;
254 default:
255 fprintf(stderr, Name ": unknown level %d\n", level);
256 return 1;
257 }
258
259 if (size && chunk)
260 size &= ~(unsigned long long)(chunk - 1);
261 newsize = size * 2;
262 if (st && ! st->ss->validate_geometry(st, level, layout, raiddisks,
263 chunk, size*2, NULL, &newsize, verbose>=0))
264 return 1;
265 if (size == 0) {
266 size = newsize / 2;
267 if (size && verbose > 0)
268 fprintf(stderr, Name ": setting size to %lluK\n",
269 (unsigned long long)size);
270 }
271
272 /* now look at the subdevs */
273 info.array.active_disks = 0;
274 info.array.working_disks = 0;
275 dnum = 0;
276 for (dv=devlist; dv && !have_container; dv=dv->next, dnum++) {
277 char *dname = dv->devname;
278 unsigned long long freesize;
279 if (strcasecmp(dname, "missing")==0) {
280 if (first_missing > dnum)
281 first_missing = dnum;
282 if (second_missing > dnum && dnum > first_missing)
283 second_missing = dnum;
284 missing_disks ++;
285 continue;
286 }
287 info.array.working_disks++;
288 if (dnum < raiddisks)
289 info.array.active_disks++;
290 if (st == NULL) {
291 struct createinfo *ci = conf_get_create_info();
292 if (ci)
293 st = ci->supertype;
294 }
295 if (st == NULL) {
296 /* Need to choose a default metadata, which is different
297 * depending on geometry of array.
298 */
299 int i;
300 char *name = "default";
301 for(i=0; !st && superlist[i]; i++) {
302 st = superlist[i]->match_metadata_desc(name);
303 if (do_default_layout)
304 layout = default_layout(st, level, verbose);
305 if (st && !st->ss->validate_geometry
306 (st, level, layout, raiddisks,
307 chunk, size*2, dname, &freesize,
308 verbose > 0))
309 st = NULL;
310 }
311
312 if (!st) {
313 fprintf(stderr, Name ": device %s not suitable "
314 "for any style of array\n",
315 dname);
316 exit(2);
317 }
318 if (st->ss != &super0 ||
319 st->minor_version != 90)
320 did_default = 1;
321 } else {
322 if (do_default_layout)
323 layout = default_layout(st, level, verbose);
324 if (!st->ss->validate_geometry(st, level, layout,
325 raiddisks,
326 chunk, size*2, dname,
327 &freesize,
328 verbose > 0)) {
329
330 fprintf(stderr,
331 Name ": %s is not suitable for "
332 "this array.\n",
333 dname);
334 fail = 1;
335 continue;
336 }
337 }
338
339 freesize /= 2; /* convert to K */
340 if (chunk) {
341 /* round to chunk size */
342 freesize = freesize & ~(chunk-1);
343 }
344
345 if (size && freesize < size) {
346 fprintf(stderr, Name ": %s is smaller than given size."
347 " %lluK < %lluK + metadata\n",
348 dname, freesize, size);
349 fail = 1;
350 continue;
351 }
352 if (maxdisc == NULL || (maxdisc && freesize > maxsize)) {
353 maxdisc = dname;
354 maxsize = freesize;
355 }
356 if (mindisc ==NULL || (mindisc && freesize < minsize)) {
357 mindisc = dname;
358 minsize = freesize;
359 }
360 if (runstop != 1 || verbose >= 0) {
361 int fd = open(dname, O_RDONLY);
362 if (fd <0 ) {
363 fprintf(stderr, Name ": Cannot open %s: %s\n",
364 dname, strerror(errno));
365 fail=1;
366 continue;
367 }
368 warn |= check_ext2(fd, dname);
369 warn |= check_reiser(fd, dname);
370 warn |= check_raid(fd, dname);
371 close(fd);
372 }
373 }
374 if (have_container)
375 info.array.working_disks = raiddisks;
376 if (fail) {
377 fprintf(stderr, Name ": create aborted\n");
378 return 1;
379 }
380 if (size == 0) {
381 if (mindisc == NULL && !have_container) {
382 fprintf(stderr, Name ": no size and no drives given - aborting create.\n");
383 return 1;
384 }
385 if (level > 0 || level == LEVEL_MULTIPATH
386 || level == LEVEL_FAULTY
387 || st->ss->external ) {
388 /* size is meaningful */
389 if (!st->ss->validate_geometry(st, level, layout,
390 raiddisks,
391 chunk, minsize*2,
392 NULL, NULL, 0)) {
393 fprintf(stderr, Name ": devices too large for RAID level %d\n", level);
394 return 1;
395 }
396 size = minsize;
397 if (verbose > 0)
398 fprintf(stderr, Name ": size set to %lluK\n", size);
399 }
400 }
401 if (!have_container && level > 0 && ((maxsize-size)*100 > maxsize)) {
402 if (runstop != 1 || verbose >= 0)
403 fprintf(stderr, Name ": largest drive (%s) exceeds size (%lluK) by more than 1%%\n",
404 maxdisc, size);
405 warn = 1;
406 }
407
408 if (st->ss->detail_platform && st->ss->detail_platform(0, 1) != 0) {
409 if (runstop != 1 || verbose >= 0)
410 fprintf(stderr, Name ": %s unable to enumerate platform support\n"
411 " array may not be compatible with hardware/firmware\n",
412 st->ss->name);
413 warn = 1;
414 }
415
416 if (warn) {
417 if (runstop!= 1) {
418 if (!ask("Continue creating array? ")) {
419 fprintf(stderr, Name ": create aborted.\n");
420 return 1;
421 }
422 } else {
423 if (verbose > 0)
424 fprintf(stderr, Name ": creation continuing despite oddities due to --run\n");
425 }
426 }
427
428 /* If this is raid4/5, we want to configure the last active slot
429 * as missing, so that a reconstruct happens (faster than re-parity)
430 * FIX: Can we do this for raid6 as well?
431 */
432 if (st->ss->external == 0 &&
433 assume_clean==0 && force == 0 && first_missing >= raiddisks) {
434 switch ( level ) {
435 case 4:
436 case 5:
437 insert_point = raiddisks-1;
438 sparedisks++;
439 info.array.active_disks--;
440 missing_disks++;
441 break;
442 default:
443 break;
444 }
445 }
446 /* For raid6, if creating with 1 missing drive, make a good drive
447 * into a spare, else the create will fail
448 */
449 if (assume_clean == 0 && force == 0 && first_missing < raiddisks &&
450 st->ss->external == 0 &&
451 second_missing >= raiddisks && level == 6) {
452 insert_point = raiddisks - 1;
453 if (insert_point == first_missing)
454 insert_point--;
455 sparedisks ++;
456 info.array.active_disks--;
457 missing_disks++;
458 }
459
460 if (level <= 0 && first_missing < subdevs * 2) {
461 fprintf(stderr,
462 Name ": This level does not support missing devices\n");
463 return 1;
464 }
465
466 /* We need to create the device */
467 map_lock(&map);
468 mdfd = create_mddev(mddev, name, autof, LOCAL, chosen_name);
469 if (mdfd < 0)
470 return 1;
471 mddev = chosen_name;
472
473 vers = md_get_version(mdfd);
474 if (vers < 9000) {
475 fprintf(stderr, Name ": Create requires md driver version 0.90.0 or later\n");
476 goto abort;
477 } else {
478 mdu_array_info_t inf;
479 memset(&inf, 0, sizeof(inf));
480 ioctl(mdfd, GET_ARRAY_INFO, &inf);
481 if (inf.working_disks != 0) {
482 fprintf(stderr, Name ": another array by this name"
483 " is already running.\n");
484 goto abort;
485 }
486 }
487
488 /* Ok, lets try some ioctls */
489
490 info.array.level = level;
491 info.array.size = size;
492 info.array.raid_disks = raiddisks;
493 /* The kernel should *know* what md_minor we are dealing
494 * with, but it chooses to trust me instead. Sigh
495 */
496 info.array.md_minor = 0;
497 if (fstat(mdfd, &stb)==0)
498 info.array.md_minor = minor(stb.st_rdev);
499 info.array.not_persistent = 0;
500
501 if ( ( (level == 4 || level == 5) &&
502 (insert_point < raiddisks || first_missing < raiddisks) )
503 ||
504 ( level == 6 && (insert_point < raiddisks
505 || second_missing < raiddisks))
506 ||
507 ( level <= 0 )
508 ||
509 assume_clean
510 ) {
511 info.array.state = 1; /* clean, but one+ drive will be missing*/
512 info.resync_start = ~0ULL;
513 } else {
514 info.array.state = 0; /* not clean, but no errors */
515 info.resync_start = 0;
516 }
517 if (level == 10) {
518 /* for raid10, the bitmap size is the capacity of the array,
519 * which is array.size * raid_disks / ncopies;
520 * .. but convert to sectors.
521 */
522 int ncopies = ((layout>>8) & 255) * (layout & 255);
523 bitmapsize = (unsigned long long)size * raiddisks / ncopies * 2;
524 /* printf("bms=%llu as=%d rd=%d nc=%d\n", bitmapsize, size, raiddisks, ncopies);*/
525 } else
526 bitmapsize = (unsigned long long)size * 2;
527
528 /* There is lots of redundancy in these disk counts,
529 * raid_disks is the most meaningful value
530 * it describes the geometry of the array
531 * it is constant
532 * nr_disks is total number of used slots.
533 * it should be raid_disks+spare_disks
534 * spare_disks is the number of extra disks present
535 * see above
536 * active_disks is the number of working disks in
537 * active slots. (With raid_disks)
538 * working_disks is the total number of working disks,
539 * including spares
540 * failed_disks is the number of disks marked failed
541 *
542 * Ideally, the kernel would keep these (except raid_disks)
543 * up-to-date as we ADD_NEW_DISK, but it doesn't (yet).
544 * So for now, we assume that all raid and spare
545 * devices will be given.
546 */
547 info.array.spare_disks=sparedisks;
548 info.array.failed_disks=missing_disks;
549 info.array.nr_disks = info.array.working_disks
550 + info.array.failed_disks;
551 info.array.layout = layout;
552 info.array.chunk_size = chunk*1024;
553
554 if (name == NULL || *name == 0) {
555 /* base name on mddev */
556 /* /dev/md0 -> 0
557 * /dev/md_d0 -> d0
558 * /dev/md/1 -> 1
559 * /dev/md/d1 -> d1
560 * /dev/md/home -> home
561 * /dev/mdhome -> home
562 */
563 /* FIXME compare this with rules in create_mddev */
564 name = strrchr(mddev, '/');
565 if (name) {
566 name++;
567 if (strncmp(name, "md_d", 4)==0 &&
568 strlen(name) > 4 &&
569 isdigit(name[4]) &&
570 (name-mddev) == 5 /* /dev/ */)
571 name += 3;
572 else if (strncmp(name, "md", 2)==0 &&
573 strlen(name) > 2 &&
574 isdigit(name[2]) &&
575 (name-mddev) == 5 /* /dev/ */)
576 name += 2;
577 }
578 }
579 if (!st->ss->init_super(st, &info.array, size, name, homehost, uuid))
580 goto abort;
581
582 total_slots = info.array.nr_disks;
583 sysfs_init(&info, mdfd, 0);
584 st->ss->getinfo_super(st, &info);
585
586 if (did_default && verbose >= 0) {
587 if (is_subarray(info.text_version)) {
588 int dnum = devname2devnum(info.text_version+1);
589 char *path;
590 int mdp = get_mdp_major();
591 struct mdinfo *mdi;
592 if (dnum > 0)
593 path = map_dev(MD_MAJOR, dnum, 1);
594 else
595 path = map_dev(mdp, (-1-dnum)<< 6, 1);
596
597 mdi = sysfs_read(-1, dnum, GET_VERSION);
598
599 fprintf(stderr, Name ": Creating array inside "
600 "%s container %s\n",
601 mdi?mdi->text_version:"managed", path);
602 sysfs_free(mdi);
603 } else
604 fprintf(stderr, Name ": Defaulting to version"
605 " %s metadata\n", info.text_version);
606 }
607
608 map_update(&map, fd2devnum(mdfd), info.text_version,
609 info.uuid, chosen_name);
610 map_unlock(&map);
611
612 if (bitmap_file && vers < 9003) {
613 major_num = BITMAP_MAJOR_HOSTENDIAN;
614 #ifdef __BIG_ENDIAN
615 fprintf(stderr, Name ": Warning - bitmaps created on this kernel are not portable\n"
616 " between different architectured. Consider upgrading the Linux kernel.\n");
617 #endif
618 }
619
620 if (bitmap_file && strcmp(bitmap_file, "internal")==0) {
621 if ((vers%100) < 2) {
622 fprintf(stderr, Name ": internal bitmaps not supported by this kernel.\n");
623 goto abort;
624 }
625 if (!st->ss->add_internal_bitmap(st, &bitmap_chunk,
626 delay, write_behind,
627 bitmapsize, 1, major_num)) {
628 fprintf(stderr, Name ": Given bitmap chunk size not supported.\n");
629 goto abort;
630 }
631 bitmap_file = NULL;
632 }
633
634
635 sysfs_init(&info, mdfd, 0);
636
637 if (st->ss->external && st->subarray[0]) {
638 /* member */
639
640 /* When creating a member, we need to be careful
641 * to negotiate with mdmon properly.
642 * If it is already running, we cannot write to
643 * the devices and must ask it to do that part.
644 * If it isn't running, we write to the devices,
645 * and then start it.
646 * We hold an exclusive open on the container
647 * device to make sure mdmon doesn't exit after
648 * we checked that it is running.
649 *
650 * For now, fail if it is already running.
651 */
652 container_fd = open_dev_excl(st->container_dev);
653 if (container_fd < 0) {
654 fprintf(stderr, Name ": Cannot get exclusive "
655 "open on container - weird.\n");
656 goto abort;
657 }
658 if (mdmon_running(st->container_dev)) {
659 if (verbose)
660 fprintf(stderr, Name ": reusing mdmon "
661 "for %s.\n",
662 devnum2devname(st->container_dev));
663 st->update_tail = &st->updates;
664 } else
665 need_mdmon = 1;
666 }
667 rv = set_array_info(mdfd, st, &info);
668 if (rv) {
669 fprintf(stderr, Name ": failed to set array info for %s: %s\n",
670 mddev, strerror(errno));
671 goto abort;
672 }
673
674 if (bitmap_file) {
675 int uuid[4];
676
677 st->ss->uuid_from_super(st, uuid);
678 if (CreateBitmap(bitmap_file, force, (char*)uuid, bitmap_chunk,
679 delay, write_behind,
680 bitmapsize,
681 major_num)) {
682 goto abort;
683 }
684 bitmap_fd = open(bitmap_file, O_RDWR);
685 if (bitmap_fd < 0) {
686 fprintf(stderr, Name ": weird: %s cannot be openned\n",
687 bitmap_file);
688 goto abort;
689 }
690 if (ioctl(mdfd, SET_BITMAP_FILE, bitmap_fd) < 0) {
691 fprintf(stderr, Name ": Cannot set bitmap file for %s: %s\n",
692 mddev, strerror(errno));
693 goto abort;
694 }
695 }
696
697 infos = malloc(sizeof(*infos) * total_slots);
698
699 for (pass=1; pass <=2 ; pass++) {
700 mddev_dev_t moved_disk = NULL; /* the disk that was moved out of the insert point */
701
702 for (dnum=0, dv = devlist ; dv ;
703 dv=(dv->next)?(dv->next):moved_disk, dnum++) {
704 int fd;
705 struct stat stb;
706 struct mdinfo *inf = &infos[dnum];
707
708 if (dnum >= total_slots)
709 abort();
710 if (dnum == insert_point) {
711 moved_disk = dv;
712 continue;
713 }
714 if (strcasecmp(dv->devname, "missing")==0)
715 continue;
716 if (have_container)
717 moved_disk = NULL;
718 if (have_container && dnum < info.array.raid_disks - 1)
719 /* repeatedly use the container */
720 moved_disk = dv;
721
722 switch(pass) {
723 case 1:
724 *inf = info;
725
726 inf->disk.number = dnum;
727 inf->disk.raid_disk = dnum;
728 if (inf->disk.raid_disk < raiddisks)
729 inf->disk.state = (1<<MD_DISK_ACTIVE) |
730 (1<<MD_DISK_SYNC);
731 else
732 inf->disk.state = 0;
733
734 if (dv->writemostly == 1)
735 inf->disk.state |= (1<<MD_DISK_WRITEMOSTLY);
736
737 if (have_container)
738 fd = -1;
739 else {
740 if (st->ss->external && st->subarray[0])
741 fd = open(dv->devname, O_RDWR);
742 else
743 fd = open(dv->devname, O_RDWR|O_EXCL);
744
745 if (fd < 0) {
746 fprintf(stderr, Name ": failed to open %s "
747 "after earlier success - aborting\n",
748 dv->devname);
749 goto abort;
750 }
751 fstat(fd, &stb);
752 inf->disk.major = major(stb.st_rdev);
753 inf->disk.minor = minor(stb.st_rdev);
754 }
755 if (fd >= 0)
756 remove_partitions(fd);
757 if (st->ss->add_to_super(st, &inf->disk,
758 fd, dv->devname))
759 goto abort;
760 st->ss->getinfo_super(st, inf);
761 safe_mode_delay = inf->safe_mode_delay;
762
763 if (have_container && verbose > 0)
764 fprintf(stderr, Name ": Using %s for device %d\n",
765 map_dev(inf->disk.major,
766 inf->disk.minor,
767 0), dnum);
768
769 if (!have_container) {
770 /* getinfo_super might have lost these ... */
771 inf->disk.major = major(stb.st_rdev);
772 inf->disk.minor = minor(stb.st_rdev);
773 }
774 break;
775 case 2:
776 inf->errors = 0;
777 rv = 0;
778
779 rv = add_disk(mdfd, st, &info, inf);
780
781 if (rv) {
782 fprintf(stderr,
783 Name ": ADD_NEW_DISK for %s "
784 "failed: %s\n",
785 dv->devname, strerror(errno));
786 st->ss->free_super(st);
787 goto abort;
788 }
789 break;
790 }
791 if (!have_container &&
792 dv == moved_disk && dnum != insert_point) break;
793 }
794 if (pass == 1) {
795 struct mdinfo info_new;
796 struct map_ent *me = NULL;
797
798 /* check to see if the uuid has changed due to these
799 * metadata changes, and if so update the member array
800 * and container uuid. Note ->write_init_super clears
801 * the subarray cursor such that ->getinfo_super once
802 * again returns container info.
803 */
804 map_lock(&map);
805 st->ss->getinfo_super(st, &info_new);
806 if (st->ss->external && level != LEVEL_CONTAINER &&
807 !same_uuid(info_new.uuid, info.uuid, 0)) {
808 map_update(&map, fd2devnum(mdfd),
809 info_new.text_version,
810 info_new.uuid, chosen_name);
811 me = map_by_devnum(&map, st->container_dev);
812 }
813
814 st->ss->write_init_super(st);
815
816 /* update parent container uuid */
817 if (me) {
818 char *path = strdup(me->path);
819
820 st->ss->getinfo_super(st, &info_new);
821 map_update(&map, st->container_dev,
822 info_new.text_version,
823 info_new.uuid, path);
824 free(path);
825 }
826 map_unlock(&map);
827
828 flush_metadata_updates(st);
829 }
830 }
831 free(infos);
832 st->ss->free_super(st);
833
834 if (level == LEVEL_CONTAINER) {
835 /* No need to start. But we should signal udev to
836 * create links */
837 sysfs_uevent(&info, "change");
838 if (verbose >= 0)
839 fprintf(stderr, Name ": container %s prepared.\n", mddev);
840 wait_for(chosen_name, mdfd);
841 } else if (runstop == 1 || subdevs >= raiddisks) {
842 if (st->ss->external) {
843 switch(level) {
844 case LEVEL_LINEAR:
845 case LEVEL_MULTIPATH:
846 case 0:
847 sysfs_set_str(&info, NULL, "array_state",
848 "active");
849 need_mdmon = 0;
850 break;
851 default:
852 sysfs_set_str(&info, NULL, "array_state",
853 "readonly");
854 break;
855 }
856 sysfs_set_safemode(&info, safe_mode_delay);
857 } else {
858 /* param is not actually used */
859 mdu_param_t param;
860 if (ioctl(mdfd, RUN_ARRAY, &param)) {
861 fprintf(stderr, Name ": RUN_ARRAY failed: %s\n",
862 strerror(errno));
863 Manage_runstop(mddev, mdfd, -1, 0);
864 goto abort;
865 }
866 }
867 if (verbose >= 0)
868 fprintf(stderr, Name ": array %s started.\n", mddev);
869 if (st->ss->external && st->subarray[0]) {
870 if (need_mdmon)
871 start_mdmon(st->container_dev);
872
873 ping_monitor(devnum2devname(st->container_dev));
874 close(container_fd);
875 }
876 wait_for(chosen_name, mdfd);
877 } else {
878 fprintf(stderr, Name ": not starting array - not enough devices.\n");
879 }
880 close(mdfd);
881 return 0;
882
883 abort:
884 if (mdfd >= 0)
885 close(mdfd);
886 return 1;
887 }
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