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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 if (size && chunk)
265 size &= ~(unsigned long long)(chunk - 1);
266 newsize = size * 2;
267 if (st && ! st->ss->validate_geometry(st, level, layout, raiddisks,
268 chunk, size*2, NULL, &newsize, verbose>=0))
269 return 1;
270 if (size == 0) {
271 size = newsize / 2;
272 if (size && verbose > 0)
273 fprintf(stderr, Name ": setting size to %lluK\n",
274 (unsigned long long)size);
275 }
276
277 /* now look at the subdevs */
278 info.array.active_disks = 0;
279 info.array.working_disks = 0;
280 dnum = 0;
281 for (dv=devlist; dv && !have_container; dv=dv->next, dnum++) {
282 char *dname = dv->devname;
283 unsigned long long freesize;
284 if (strcasecmp(dname, "missing")==0) {
285 if (first_missing > dnum)
286 first_missing = dnum;
287 if (second_missing > dnum && dnum > first_missing)
288 second_missing = dnum;
289 missing_disks ++;
290 continue;
291 }
292 info.array.working_disks++;
293 if (dnum < raiddisks)
294 info.array.active_disks++;
295 if (st == NULL) {
296 struct createinfo *ci = conf_get_create_info();
297 if (ci)
298 st = ci->supertype;
299 }
300 if (st == NULL) {
301 /* Need to choose a default metadata, which is different
302 * depending on geometry of array.
303 */
304 int i;
305 char *name = "default";
306 for(i=0; !st && superlist[i]; i++) {
307 st = superlist[i]->match_metadata_desc(name);
308 if (do_default_layout)
309 layout = default_layout(st, level, verbose);
310 if (st && !st->ss->validate_geometry
311 (st, level, layout, raiddisks,
312 chunk, size*2, dname, &freesize,
313 verbose > 0))
314 st = NULL;
315 }
316
317 if (!st) {
318 fprintf(stderr, Name ": device %s not suitable "
319 "for any style of array\n",
320 dname);
321 exit(2);
322 }
323 if (st->ss != &super0 ||
324 st->minor_version != 90)
325 did_default = 1;
326 } else {
327 if (do_default_layout)
328 layout = default_layout(st, level, verbose);
329 if (!st->ss->validate_geometry(st, level, layout,
330 raiddisks,
331 chunk, size*2, dname,
332 &freesize,
333 verbose > 0)) {
334
335 fprintf(stderr,
336 Name ": %s is not suitable for "
337 "this array.\n",
338 dname);
339 fail = 1;
340 continue;
341 }
342 }
343
344 freesize /= 2; /* convert to K */
345 if (chunk) {
346 /* round to chunk size */
347 freesize = freesize & ~(chunk-1);
348 }
349
350 if (size && freesize < size) {
351 fprintf(stderr, Name ": %s is smaller than given size."
352 " %lluK < %lluK + metadata\n",
353 dname, freesize, size);
354 fail = 1;
355 continue;
356 }
357 if (maxdisc == NULL || (maxdisc && freesize > maxsize)) {
358 maxdisc = dname;
359 maxsize = freesize;
360 }
361 if (mindisc ==NULL || (mindisc && freesize < minsize)) {
362 mindisc = dname;
363 minsize = freesize;
364 }
365 if (runstop != 1 || verbose >= 0) {
366 int fd = open(dname, O_RDONLY);
367 if (fd <0 ) {
368 fprintf(stderr, Name ": Cannot open %s: %s\n",
369 dname, strerror(errno));
370 fail=1;
371 continue;
372 }
373 warn |= check_ext2(fd, dname);
374 warn |= check_reiser(fd, dname);
375 warn |= check_raid(fd, dname);
376 close(fd);
377 }
378 }
379 if (have_container)
380 info.array.working_disks = raiddisks;
381 if (fail) {
382 fprintf(stderr, Name ": create aborted\n");
383 return 1;
384 }
385 if (size == 0) {
386 if (mindisc == NULL && !have_container) {
387 fprintf(stderr, Name ": no size and no drives given - aborting create.\n");
388 return 1;
389 }
390 if (level > 0 || level == LEVEL_MULTIPATH
391 || level == LEVEL_FAULTY
392 || st->ss->external ) {
393 /* size is meaningful */
394 if (!st->ss->validate_geometry(st, level, layout,
395 raiddisks,
396 chunk, minsize*2,
397 NULL, NULL, 0)) {
398 fprintf(stderr, Name ": devices too large for RAID level %d\n", level);
399 return 1;
400 }
401 size = minsize;
402 if (verbose > 0)
403 fprintf(stderr, Name ": size set to %lluK\n", size);
404 }
405 }
406 if (!have_container && level > 0 && ((maxsize-size)*100 > maxsize)) {
407 if (runstop != 1 || verbose >= 0)
408 fprintf(stderr, Name ": largest drive (%s) exceeds size (%lluK) by more than 1%%\n",
409 maxdisc, size);
410 warn = 1;
411 }
412
413 if (st->ss->detail_platform && st->ss->detail_platform(0, 1) != 0) {
414 if (runstop != 1 || verbose >= 0)
415 fprintf(stderr, Name ": %s unable to enumerate platform support\n"
416 " array may not be compatible with hardware/firmware\n",
417 st->ss->name);
418 warn = 1;
419 }
420
421 if (warn) {
422 if (runstop!= 1) {
423 if (!ask("Continue creating array? ")) {
424 fprintf(stderr, Name ": create aborted.\n");
425 return 1;
426 }
427 } else {
428 if (verbose > 0)
429 fprintf(stderr, Name ": creation continuing despite oddities due to --run\n");
430 }
431 }
432
433 /* If this is raid4/5, we want to configure the last active slot
434 * as missing, so that a reconstruct happens (faster than re-parity)
435 * FIX: Can we do this for raid6 as well?
436 */
437 if (st->ss->external == 0 &&
438 assume_clean==0 && force == 0 && first_missing >= raiddisks) {
439 switch ( level ) {
440 case 4:
441 case 5:
442 insert_point = raiddisks-1;
443 sparedisks++;
444 info.array.active_disks--;
445 missing_disks++;
446 break;
447 default:
448 break;
449 }
450 }
451 /* For raid6, if creating with 1 missing drive, make a good drive
452 * into a spare, else the create will fail
453 */
454 if (assume_clean == 0 && force == 0 && first_missing < raiddisks &&
455 st->ss->external == 0 &&
456 second_missing >= raiddisks && level == 6) {
457 insert_point = raiddisks - 1;
458 if (insert_point == first_missing)
459 insert_point--;
460 sparedisks ++;
461 info.array.active_disks--;
462 missing_disks++;
463 }
464
465 if (level <= 0 && first_missing < subdevs * 2) {
466 fprintf(stderr,
467 Name ": This level does not support missing devices\n");
468 return 1;
469 }
470
471 /* We need to create the device */
472 map_lock(&map);
473 mdfd = create_mddev(mddev, name, autof, LOCAL, chosen_name);
474 if (mdfd < 0)
475 return 1;
476 mddev = chosen_name;
477
478 vers = md_get_version(mdfd);
479 if (vers < 9000) {
480 fprintf(stderr, Name ": Create requires md driver version 0.90.0 or later\n");
481 goto abort;
482 } else {
483 mdu_array_info_t inf;
484 memset(&inf, 0, sizeof(inf));
485 ioctl(mdfd, GET_ARRAY_INFO, &inf);
486 if (inf.working_disks != 0) {
487 fprintf(stderr, Name ": another array by this name"
488 " is already running.\n");
489 goto abort;
490 }
491 }
492
493 /* Ok, lets try some ioctls */
494
495 info.array.level = level;
496 info.array.size = size;
497 info.array.raid_disks = raiddisks;
498 /* The kernel should *know* what md_minor we are dealing
499 * with, but it chooses to trust me instead. Sigh
500 */
501 info.array.md_minor = 0;
502 if (fstat(mdfd, &stb)==0)
503 info.array.md_minor = minor(stb.st_rdev);
504 info.array.not_persistent = 0;
505
506 if ( ( (level == 4 || level == 5) &&
507 (insert_point < raiddisks || first_missing < raiddisks) )
508 ||
509 ( level == 6 && (insert_point < raiddisks
510 || second_missing < raiddisks))
511 ||
512 ( level <= 0 )
513 ||
514 assume_clean
515 ) {
516 info.array.state = 1; /* clean, but one+ drive will be missing*/
517 info.resync_start = ~0ULL;
518 } else {
519 info.array.state = 0; /* not clean, but no errors */
520 info.resync_start = 0;
521 }
522 if (level == 10) {
523 /* for raid10, the bitmap size is the capacity of the array,
524 * which is array.size * raid_disks / ncopies;
525 * .. but convert to sectors.
526 */
527 int ncopies = ((layout>>8) & 255) * (layout & 255);
528 bitmapsize = (unsigned long long)size * raiddisks / ncopies * 2;
529 /* printf("bms=%llu as=%d rd=%d nc=%d\n", bitmapsize, size, raiddisks, ncopies);*/
530 } else
531 bitmapsize = (unsigned long long)size * 2;
532
533 /* There is lots of redundancy in these disk counts,
534 * raid_disks is the most meaningful value
535 * it describes the geometry of the array
536 * it is constant
537 * nr_disks is total number of used slots.
538 * it should be raid_disks+spare_disks
539 * spare_disks is the number of extra disks present
540 * see above
541 * active_disks is the number of working disks in
542 * active slots. (With raid_disks)
543 * working_disks is the total number of working disks,
544 * including spares
545 * failed_disks is the number of disks marked failed
546 *
547 * Ideally, the kernel would keep these (except raid_disks)
548 * up-to-date as we ADD_NEW_DISK, but it doesn't (yet).
549 * So for now, we assume that all raid and spare
550 * devices will be given.
551 */
552 info.array.spare_disks=sparedisks;
553 info.array.failed_disks=missing_disks;
554 info.array.nr_disks = info.array.working_disks
555 + info.array.failed_disks;
556 info.array.layout = layout;
557 info.array.chunk_size = chunk*1024;
558
559 if (name == NULL || *name == 0) {
560 /* base name on mddev */
561 /* /dev/md0 -> 0
562 * /dev/md_d0 -> d0
563 * /dev/md/1 -> 1
564 * /dev/md/d1 -> d1
565 * /dev/md/home -> home
566 * /dev/mdhome -> home
567 */
568 /* FIXME compare this with rules in create_mddev */
569 name = strrchr(mddev, '/');
570 if (name) {
571 name++;
572 if (strncmp(name, "md_d", 4)==0 &&
573 strlen(name) > 4 &&
574 isdigit(name[4]) &&
575 (name-mddev) == 5 /* /dev/ */)
576 name += 3;
577 else if (strncmp(name, "md", 2)==0 &&
578 strlen(name) > 2 &&
579 isdigit(name[2]) &&
580 (name-mddev) == 5 /* /dev/ */)
581 name += 2;
582 }
583 }
584 if (!st->ss->init_super(st, &info.array, size, name, homehost, uuid))
585 goto abort;
586
587 total_slots = info.array.nr_disks;
588 sysfs_init(&info, mdfd, 0);
589 st->ss->getinfo_super(st, &info);
590
591 if (did_default && verbose >= 0) {
592 if (is_subarray(info.text_version)) {
593 int dnum = devname2devnum(info.text_version+1);
594 char *path;
595 int mdp = get_mdp_major();
596 struct mdinfo *mdi;
597 if (dnum > 0)
598 path = map_dev(MD_MAJOR, dnum, 1);
599 else
600 path = map_dev(mdp, (-1-dnum)<< 6, 1);
601
602 mdi = sysfs_read(-1, dnum, GET_VERSION);
603
604 fprintf(stderr, Name ": Creating array inside "
605 "%s container %s\n",
606 mdi?mdi->text_version:"managed", path);
607 sysfs_free(mdi);
608 } else
609 fprintf(stderr, Name ": Defaulting to version"
610 " %s metadata\n", info.text_version);
611 }
612
613 map_update(&map, fd2devnum(mdfd), info.text_version,
614 info.uuid, chosen_name);
615 map_unlock(&map);
616
617 if (bitmap_file && vers < 9003) {
618 major_num = BITMAP_MAJOR_HOSTENDIAN;
619 #ifdef __BIG_ENDIAN
620 fprintf(stderr, Name ": Warning - bitmaps created on this kernel are not portable\n"
621 " between different architectured. Consider upgrading the Linux kernel.\n");
622 #endif
623 }
624
625 if (bitmap_file && strcmp(bitmap_file, "internal")==0) {
626 if ((vers%100) < 2) {
627 fprintf(stderr, Name ": internal bitmaps not supported by this kernel.\n");
628 goto abort;
629 }
630 if (!st->ss->add_internal_bitmap(st, &bitmap_chunk,
631 delay, write_behind,
632 bitmapsize, 1, major_num)) {
633 fprintf(stderr, Name ": Given bitmap chunk size not supported.\n");
634 goto abort;
635 }
636 bitmap_file = NULL;
637 }
638
639
640 sysfs_init(&info, mdfd, 0);
641
642 if (st->ss->external && st->subarray[0]) {
643 /* member */
644
645 /* When creating a member, we need to be careful
646 * to negotiate with mdmon properly.
647 * If it is already running, we cannot write to
648 * the devices and must ask it to do that part.
649 * If it isn't running, we write to the devices,
650 * and then start it.
651 * We hold an exclusive open on the container
652 * device to make sure mdmon doesn't exit after
653 * we checked that it is running.
654 *
655 * For now, fail if it is already running.
656 */
657 container_fd = open_dev_excl(st->container_dev);
658 if (container_fd < 0) {
659 fprintf(stderr, Name ": Cannot get exclusive "
660 "open on container - weird.\n");
661 goto abort;
662 }
663 if (mdmon_running(st->container_dev)) {
664 if (verbose)
665 fprintf(stderr, Name ": reusing mdmon "
666 "for %s.\n",
667 devnum2devname(st->container_dev));
668 st->update_tail = &st->updates;
669 } else
670 need_mdmon = 1;
671 }
672 rv = set_array_info(mdfd, st, &info);
673 if (rv) {
674 fprintf(stderr, Name ": failed to set array info for %s: %s\n",
675 mddev, strerror(errno));
676 goto abort;
677 }
678
679 if (bitmap_file) {
680 int uuid[4];
681
682 st->ss->uuid_from_super(st, uuid);
683 if (CreateBitmap(bitmap_file, force, (char*)uuid, bitmap_chunk,
684 delay, write_behind,
685 bitmapsize,
686 major_num)) {
687 goto abort;
688 }
689 bitmap_fd = open(bitmap_file, O_RDWR);
690 if (bitmap_fd < 0) {
691 fprintf(stderr, Name ": weird: %s cannot be openned\n",
692 bitmap_file);
693 goto abort;
694 }
695 if (ioctl(mdfd, SET_BITMAP_FILE, bitmap_fd) < 0) {
696 fprintf(stderr, Name ": Cannot set bitmap file for %s: %s\n",
697 mddev, strerror(errno));
698 goto abort;
699 }
700 }
701
702 infos = malloc(sizeof(*infos) * total_slots);
703
704 for (pass=1; pass <=2 ; pass++) {
705 mddev_dev_t moved_disk = NULL; /* the disk that was moved out of the insert point */
706
707 for (dnum=0, dv = devlist ; dv ;
708 dv=(dv->next)?(dv->next):moved_disk, dnum++) {
709 int fd;
710 struct stat stb;
711 struct mdinfo *inf = &infos[dnum];
712
713 if (dnum >= total_slots)
714 abort();
715 if (dnum == insert_point) {
716 moved_disk = dv;
717 continue;
718 }
719 if (strcasecmp(dv->devname, "missing")==0)
720 continue;
721 if (have_container)
722 moved_disk = NULL;
723 if (have_container && dnum < info.array.raid_disks - 1)
724 /* repeatedly use the container */
725 moved_disk = dv;
726
727 switch(pass) {
728 case 1:
729 *inf = info;
730
731 inf->disk.number = dnum;
732 inf->disk.raid_disk = dnum;
733 if (inf->disk.raid_disk < raiddisks)
734 inf->disk.state = (1<<MD_DISK_ACTIVE) |
735 (1<<MD_DISK_SYNC);
736 else
737 inf->disk.state = 0;
738
739 if (dv->writemostly == 1)
740 inf->disk.state |= (1<<MD_DISK_WRITEMOSTLY);
741
742 if (have_container)
743 fd = -1;
744 else {
745 if (st->ss->external && st->subarray[0])
746 fd = open(dv->devname, O_RDWR);
747 else
748 fd = open(dv->devname, O_RDWR|O_EXCL);
749
750 if (fd < 0) {
751 fprintf(stderr, Name ": failed to open %s "
752 "after earlier success - aborting\n",
753 dv->devname);
754 goto abort;
755 }
756 fstat(fd, &stb);
757 inf->disk.major = major(stb.st_rdev);
758 inf->disk.minor = minor(stb.st_rdev);
759 }
760 if (fd >= 0)
761 remove_partitions(fd);
762 if (st->ss->add_to_super(st, &inf->disk,
763 fd, dv->devname))
764 goto abort;
765 st->ss->getinfo_super(st, inf);
766 safe_mode_delay = inf->safe_mode_delay;
767
768 if (have_container && verbose > 0)
769 fprintf(stderr, Name ": Using %s for device %d\n",
770 map_dev(inf->disk.major,
771 inf->disk.minor,
772 0), dnum);
773
774 if (!have_container) {
775 /* getinfo_super might have lost these ... */
776 inf->disk.major = major(stb.st_rdev);
777 inf->disk.minor = minor(stb.st_rdev);
778 }
779 break;
780 case 2:
781 inf->errors = 0;
782 rv = 0;
783
784 rv = add_disk(mdfd, st, &info, inf);
785
786 if (rv) {
787 fprintf(stderr,
788 Name ": ADD_NEW_DISK for %s "
789 "failed: %s\n",
790 dv->devname, strerror(errno));
791 st->ss->free_super(st);
792 goto abort;
793 }
794 break;
795 }
796 if (!have_container &&
797 dv == moved_disk && dnum != insert_point) break;
798 }
799 if (pass == 1) {
800 st->ss->write_init_super(st);
801 flush_metadata_updates(st);
802 }
803 }
804 free(infos);
805 st->ss->free_super(st);
806
807 if (level == LEVEL_CONTAINER) {
808 /* No need to start. But we should signal udev to
809 * create links */
810 sysfs_uevent(&info, "change");
811 if (verbose >= 0)
812 fprintf(stderr, Name ": container %s prepared.\n", mddev);
813 wait_for(chosen_name, mdfd);
814 } else if (runstop == 1 || subdevs >= raiddisks) {
815 if (st->ss->external) {
816 switch(level) {
817 case LEVEL_LINEAR:
818 case LEVEL_MULTIPATH:
819 case 0:
820 sysfs_set_str(&info, NULL, "array_state",
821 "active");
822 need_mdmon = 0;
823 break;
824 default:
825 sysfs_set_str(&info, NULL, "array_state",
826 "readonly");
827 break;
828 }
829 sysfs_set_safemode(&info, safe_mode_delay);
830 } else {
831 /* param is not actually used */
832 mdu_param_t param;
833 if (ioctl(mdfd, RUN_ARRAY, &param)) {
834 fprintf(stderr, Name ": RUN_ARRAY failed: %s\n",
835 strerror(errno));
836 Manage_runstop(mddev, mdfd, -1, 0);
837 goto abort;
838 }
839 }
840 if (verbose >= 0)
841 fprintf(stderr, Name ": array %s started.\n", mddev);
842 if (st->ss->external && st->subarray[0]) {
843 if (need_mdmon)
844 start_mdmon(st->container_dev);
845
846 ping_monitor(devnum2devname(st->container_dev));
847 close(container_fd);
848 }
849 wait_for(chosen_name, mdfd);
850 } else {
851 fprintf(stderr, Name ": not starting array - not enough devices.\n");
852 }
853 close(mdfd);
854 return 0;
855
856 abort:
857 if (mdfd >= 0)
858 close(mdfd);
859 return 1;
860 }
Unnamed repository; edit this file 'description' to name the repository.