2 * Incremental.c - support --incremental. Part of:
3 * mdadm - manage Linux "md" devices aka RAID arrays.
5 * Copyright (C) 2006-2013 Neil Brown <neilb@suse.de>
8 * This program is free software; you can redistribute it and/or modify
9 * it under the terms of the GNU General Public License as published by
10 * the Free Software Foundation; either version 2 of the License, or
11 * (at your option) any later version.
13 * This program is distributed in the hope that it will be useful,
14 * but WITHOUT ANY WARRANTY; without even the implied warranty of
15 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
16 * GNU General Public License for more details.
18 * You should have received a copy of the GNU General Public License
19 * along with this program; if not, write to the Free Software
20 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
23 * Email: <neilb@suse.de>
27 * QVB Post Office, NSW 1230
36 static int count_active(struct supertype
*st
, struct mdinfo
*sra
,
37 int mdfd
, char **availp
,
39 static void find_reject(int mdfd
, struct supertype
*st
, struct mdinfo
*sra
,
40 int number
, __u64 events
, int verbose
,
42 static int try_spare(char *devname
, int *dfdp
, struct dev_policy
*pol
,
43 struct map_ent
*target
,
44 struct supertype
*st
, int verbose
);
46 static int Incremental_container(struct supertype
*st
, char *devname
,
47 struct context
*c
, char *only
);
49 int Incremental(struct mddev_dev
*devlist
, struct context
*c
,
52 /* Add this device to an array, creating the array if necessary
53 * and starting the array if sensible or - if runstop>0 - if possible.
55 * This has several steps:
57 * 1/ Check if device is permitted by mdadm.conf, reject if not.
58 * 2/ Find metadata, reject if none appropriate (check
59 * version/name from args)
60 * 3/ Check if there is a match in mdadm.conf
61 * 3a/ if not, check for homehost match. If no match, assemble as
63 * 4/ Determine device number.
64 * - If in mdadm.conf with std name, use that
65 * - UUID in /var/run/mdadm.map use that
66 * - If name is suggestive, use that. unless in use with different uuid.
67 * - Choose a free, high number.
68 * - Use a partitioned device unless strong suggestion not to.
70 * Don't choose partitioned for containers.
71 * 5/ Find out if array already exists
73 * - choose a name, from mdadm.conf or 'name' field in array.
77 * - check one drive in array to make sure metadata is a reasonably
78 * close match. Reject if not (e.g. different type)
80 * 6/ Make sure /var/run/mdadm.map contains this array.
81 * 7/ Is there enough devices to possibly start the array?
82 * For a container, this means running Incremental_container.
83 * 7a/ if not, finish with success.
85 * - read all metadata and arrange devices like -A does
86 * - if number of OK devices match expected, or -R and there are enough,
87 * start the array (auto-readonly).
90 struct mdinfo info
, dinfo
;
91 struct mdinfo
*sra
= NULL
, *d
;
92 struct mddev_ident
*match
;
93 char chosen_name
[1024];
96 struct map_ent
*mp
, *map
= NULL
;
97 int dfd
= -1, mdfd
= -1;
102 struct dev_policy
*policy
= NULL
;
103 struct map_ent target_array
;
105 char *devname
= devlist
->devname
;
106 int journal_device_missing
= 0;
108 struct createinfo
*ci
= conf_get_create_info();
110 if (!stat_is_blkdev(devname
, &rdev
))
112 dfd
= dev_open(devname
, O_RDONLY
);
115 pr_err("cannot open %s: %s.\n",
116 devname
, strerror(errno
));
119 /* If the device is a container, we do something very different */
120 if (must_be_container(dfd
)) {
122 st
= super_by_fd(dfd
, NULL
);
123 if (st
&& st
->ss
->load_container
)
124 rv
= st
->ss
->load_container(st
, dfd
, NULL
);
127 if (!rv
&& st
->ss
->container_content
) {
129 pr_err("failed to get exclusive lock on mapfile\n");
131 printf("MD_DEVNAME=%s\n", devname
);
132 rv
= Incremental_container(st
, devname
, c
, NULL
);
137 pr_err("%s is not part of an md array.\n",
142 /* 1/ Check if device is permitted by mdadm.conf */
144 for (;devlist
; devlist
= devlist
->next
)
145 if (conf_test_dev(devlist
->devname
))
148 devlist
= conf_get_devs();
149 for (;devlist
; devlist
= devlist
->next
) {
150 if (stat_is_blkdev(devlist
->devname
, &rdev2
) &&
157 pr_err("%s not permitted by mdadm.conf.\n",
162 /* 2/ Find metadata, reject if none appropriate (check
163 * version/name from args) */
165 if (!fstat_is_blkdev(dfd
, devname
, &rdev
))
168 dinfo
.disk
.major
= major(rdev
);
169 dinfo
.disk
.minor
= minor(rdev
);
171 policy
= disk_policy(&dinfo
);
172 have_target
= policy_check_path(&dinfo
, &target_array
);
174 if (st
== NULL
&& (st
= guess_super_type(dfd
, guess_array
)) == NULL
) {
176 pr_err("no recognisable superblock on %s.\n",
178 rv
= try_spare(devname
, &dfd
, policy
,
179 have_target
? &target_array
: NULL
,
183 st
->ignore_hw_compat
= 0;
185 if (st
->ss
->compare_super
== NULL
||
186 st
->ss
->load_super(st
, dfd
, c
->verbose
>= 0 ? devname
: NULL
)) {
188 pr_err("no RAID superblock on %s.\n",
190 rv
= try_spare(devname
, &dfd
, policy
,
191 have_target
? &target_array
: NULL
,
196 close (dfd
); dfd
= -1;
198 st
->ss
->getinfo_super(st
, &info
, NULL
);
200 /* 3/ Check if there is a match in mdadm.conf */
201 match
= conf_match(st
, &info
, devname
, c
->verbose
, &rv
);
202 if (!match
&& rv
== 2)
205 if (match
&& match
->devname
&&
206 strcasecmp(match
->devname
, "<ignore>") == 0) {
208 pr_err("array containing %s is explicitly ignored by mdadm.conf\n",
213 /* 3a/ if not, check for homehost match. If no match, continue
214 * but don't trust the 'name' in the array. Thus a 'random' minor
215 * number will be assigned, and the device name will be based
219 else if (st
->ss
->match_home(st
, c
->homehost
) == 1)
221 else if (st
->ss
->match_home(st
, "any") == 1)
222 trustworthy
= LOCAL_ANY
;
224 trustworthy
= FOREIGN
;
226 if (!match
&& !conf_test_metadata(st
->ss
->name
, policy
,
227 (trustworthy
== LOCAL
))) {
229 pr_err("%s has metadata type %s for which auto-assembly is disabled\n",
230 devname
, st
->ss
->name
);
233 if (trustworthy
== LOCAL_ANY
)
236 /* There are three possible sources for 'autof': command line,
237 * ARRAY line in mdadm.conf, or CREATE line in mdadm.conf.
238 * ARRAY takes precedence, then command line, then
241 if (match
&& match
->autof
)
242 c
->autof
= match
->autof
;
244 c
->autof
= ci
->autof
;
246 name_to_use
= info
.name
;
247 if (name_to_use
[0] == 0 && info
.array
.level
== LEVEL_CONTAINER
) {
248 name_to_use
= info
.text_version
;
249 trustworthy
= METADATA
;
251 if (name_to_use
[0] && trustworthy
!= LOCAL
&&
252 ! c
->require_homehost
&&
253 conf_name_is_free(name_to_use
))
256 /* strip "hostname:" prefix from name if we have decided
257 * to treat it as LOCAL
259 if (trustworthy
== LOCAL
&& strchr(name_to_use
, ':') != NULL
)
260 name_to_use
= strchr(name_to_use
, ':')+1;
262 /* 4/ Check if array exists.
265 pr_err("failed to get exclusive lock on mapfile\n");
266 /* Now check we can get O_EXCL. If not, probably "mdadm -A" has
269 dfd
= dev_open(devname
, O_RDONLY
|O_EXCL
);
272 pr_err("cannot reopen %s: %s.\n",
273 devname
, strerror(errno
));
276 /* Cannot hold it open while we add the device to the array,
277 * so we must release the O_EXCL and depend on the map_lock()
278 * So now is the best time to remove any partitions.
280 remove_partitions(dfd
);
284 mp
= map_by_uuid(&map
, info
.uuid
);
286 mdfd
= open_dev(mp
->devnm
);
292 /* Skip the clustered ones. This should be started by
293 * clustering resource agents
295 if (info
.array
.state
& (1 << MD_SB_CLUSTERED
))
298 /* Couldn't find an existing array, maybe make a new one */
299 mdfd
= create_mddev(match
? match
->devname
: NULL
,
300 name_to_use
, c
->autof
, trustworthy
, chosen_name
, 0);
305 if (sysfs_init(&info
, mdfd
, NULL
)) {
306 pr_err("unable to initialize sysfs for %s\n",
312 if (set_array_info(mdfd
, st
, &info
) != 0) {
313 pr_err("failed to set array info for %s: %s\n",
314 chosen_name
, strerror(errno
));
320 dinfo
.disk
.major
= major(rdev
);
321 dinfo
.disk
.minor
= minor(rdev
);
322 if (add_disk(mdfd
, st
, &info
, &dinfo
) != 0) {
323 pr_err("failed to add %s to new array %s: %s.\n",
324 devname
, chosen_name
, strerror(errno
));
325 ioctl(mdfd
, STOP_ARRAY
, 0);
329 sra
= sysfs_read(mdfd
, NULL
, (GET_DEVS
| GET_STATE
|
330 GET_OFFSET
| GET_SIZE
));
332 if (!sra
|| !sra
->devs
|| sra
->devs
->disk
.raid_disk
>= 0) {
333 /* It really should be 'none' - must be old buggy
334 * kernel, and mdadm -I may not be able to complete.
337 ioctl(mdfd
, STOP_ARRAY
, NULL
);
338 pr_err("You have an old buggy kernel which cannot support\n --incremental reliably. Aborting.\n");
342 info
.array
.working_disks
= 1;
343 /* 6/ Make sure /var/run/mdadm.map contains this array. */
344 map_update(&map
, fd2devnm(mdfd
),
346 info
.uuid
, chosen_name
);
349 /* - check one drive in array to make sure metadata is a reasonably */
350 /* close match. Reject if not (e.g. different type) */
351 /* - add the device */
355 struct supertype
*st2
;
356 struct mdinfo info2
, *d
;
358 sra
= sysfs_read(mdfd
, NULL
, (GET_DEVS
| GET_STATE
|
359 GET_OFFSET
| GET_SIZE
));
362 strcpy(chosen_name
, mp
->path
);
364 strcpy(chosen_name
, mp
->devnm
);
366 /* It is generally not OK to add non-spare drives to a
367 * running array as they are probably missing because
368 * they failed. However if runstop is 1, then the
369 * array was possibly started early and our best bet is
370 * to add this anyway.
371 * Also if action policy is re-add or better we allow
373 * This doesn't apply to containers as the 'non-spare'
374 * flag has a different meaning. The test has to happen
375 * at the device level there
377 if (!st
->ss
->external
&&
378 (info
.disk
.state
& (1 << MD_DISK_SYNC
)) != 0 &&
379 !policy_action_allows(policy
, st
->ss
->name
, act_re_add
) &&
381 if (md_array_active(mdfd
)) {
382 pr_err("not adding %s to active array (without --run) %s\n",
383 devname
, chosen_name
);
393 sprintf(dn
, "%d:%d", sra
->devs
->disk
.major
,
394 sra
->devs
->disk
.minor
);
395 dfd2
= dev_open(dn
, O_RDONLY
);
397 pr_err("unable to open %s\n", devname
);
402 if (st2
->ss
->load_super(st2
, dfd2
, NULL
) ||
403 st
->ss
->compare_super(st
, st2
) != 0) {
404 pr_err("metadata mismatch between %s and chosen array %s\n",
405 devname
, chosen_name
);
411 st2
->ss
->getinfo_super(st2
, &info2
, NULL
);
412 st2
->ss
->free_super(st2
);
413 if (info
.array
.level
!= info2
.array
.level
||
414 memcmp(info
.uuid
, info2
.uuid
, 16) != 0 ||
415 info
.array
.raid_disks
!= info2
.array
.raid_disks
) {
416 pr_err("unexpected difference between %s and %s.\n",
417 chosen_name
, devname
);
422 info
.disk
.major
= major(rdev
);
423 info
.disk
.minor
= minor(rdev
);
424 /* add disk needs to know about containers */
425 if (st
->ss
->external
)
426 sra
->array
.level
= LEVEL_CONTAINER
;
428 if (info
.array
.state
& (1 << MD_SB_CLUSTERED
))
429 info
.disk
.state
|= (1 << MD_DISK_CLUSTER_ADD
);
431 err
= add_disk(mdfd
, st
, sra
, &info
);
432 if (err
< 0 && errno
== EBUSY
) {
433 /* could be another device present with the same
434 * disk.number. Find and reject any such
436 find_reject(mdfd
, st
, sra
, info
.disk
.number
,
437 info
.events
, c
->verbose
, chosen_name
);
438 err
= add_disk(mdfd
, st
, sra
, &info
);
440 if (err
< 0 && errno
== EINVAL
&&
441 info
.disk
.state
& (1<<MD_DISK_SYNC
)) {
442 /* Maybe it needs to be added as a spare */
443 if (policy_action_allows(policy
, st
->ss
->name
,
445 info
.disk
.state
&= ~(1<<MD_DISK_SYNC
);
446 err
= add_disk(mdfd
, st
, sra
, &info
);
449 pr_err("can only add %s to %s as a spare, and force-spare is not set.\n",
450 devname
, chosen_name
);
453 pr_err("failed to add %s to existing array %s: %s.\n",
454 devname
, chosen_name
, strerror(errno
));
458 info
.array
.working_disks
= 0;
459 for (d
= sra
->devs
; d
; d
=d
->next
)
460 info
.array
.working_disks
++;
463 if (strncmp(chosen_name
, "/dev/md/", 8) == 0)
464 md_devname
= chosen_name
+8;
466 md_devname
= chosen_name
;
468 printf("MD_DEVICE=%s\n", fd2devnm(mdfd
));
469 printf("MD_DEVNAME=%s\n", md_devname
);
470 printf("MD_FOREIGN=%s\n", trustworthy
== FOREIGN
? "yes" : "no");
473 /* 7/ Is there enough devices to possibly start the array? */
474 /* 7a/ if not, finish with success. */
475 if (info
.array
.level
== LEVEL_CONTAINER
) {
477 /* Try to assemble within the container */
478 sysfs_uevent(sra
, "change");
479 if (!c
->export
&& c
->verbose
>= 0)
480 pr_err("container %s now has %d device%s\n",
481 chosen_name
, info
.array
.working_disks
,
482 info
.array
.working_disks
== 1?"":"s");
483 wait_for(chosen_name
, mdfd
);
484 if (st
->ss
->external
)
485 strcpy(devnm
, fd2devnm(mdfd
));
486 if (st
->ss
->load_container
)
487 rv
= st
->ss
->load_container(st
, mdfd
, NULL
);
491 rv
= Incremental_container(st
, chosen_name
, c
, NULL
);
493 /* after spare is added, ping monitor for external metadata
494 * so that it can eg. try to rebuild degraded array */
495 if (st
->ss
->external
)
500 /* We have added something to the array, so need to re-read the
501 * state. Eventually this state should be kept up-to-date as
505 sra
= sysfs_read(mdfd
, NULL
, (GET_DEVS
| GET_STATE
|
506 GET_OFFSET
| GET_SIZE
));
507 active_disks
= count_active(st
, sra
, mdfd
, &avail
, &info
);
509 journal_device_missing
= (info
.journal_device_required
) && (info
.journal_clean
== 0);
511 if (info
.consistency_policy
== CONSISTENCY_POLICY_PPL
)
512 info
.array
.state
|= 1;
514 if (enough(info
.array
.level
, info
.array
.raid_disks
,
515 info
.array
.layout
, info
.array
.state
& 1, avail
) == 0) {
517 printf("MD_STARTED=no\n");
518 } else if (c
->verbose
>= 0)
519 pr_err("%s attached to %s, not enough to start (%d).\n",
520 devname
, chosen_name
, active_disks
);
526 /* - if number of OK devices match expected, or -R and there */
528 /* + add any bitmap file */
529 /* + start the array (auto-readonly). */
531 if (md_array_active(mdfd
)) {
533 printf("MD_STARTED=already\n");
534 } else if (c
->verbose
>= 0)
535 pr_err("%s attached to %s which is already active.\n",
536 devname
, chosen_name
);
542 if (c
->runstop
> 0 || (!journal_device_missing
&& active_disks
>= info
.array
.working_disks
)) {
544 /* Let's try to start it */
546 if (journal_device_missing
)
547 pr_err("Trying to run with missing journal device\n");
548 if (info
.reshape_active
&& !(info
.reshape_active
& RESHAPE_NO_BACKUP
)) {
549 pr_err("%s: This array is being reshaped and cannot be started\n",
551 cont_err("by --incremental. Please use --assemble\n");
554 if (match
&& match
->bitmap_file
) {
555 int bmfd
= open(match
->bitmap_file
, O_RDWR
);
557 pr_err("Could not open bitmap file %s.\n",
561 if (ioctl(mdfd
, SET_BITMAP_FILE
, bmfd
) != 0) {
563 pr_err("Failed to set bitmapfile for %s.\n",
569 /* Need to remove from the array any devices which
570 * 'count_active' discerned were too old or inappropriate
572 for (d
= sra
? sra
->devs
: NULL
; d
; d
= d
->next
)
573 if (d
->disk
.state
& (1<<MD_DISK_REMOVED
))
574 remove_disk(mdfd
, st
, sra
, d
);
576 if ((sra
== NULL
|| active_disks
>= info
.array
.working_disks
) &&
577 trustworthy
!= FOREIGN
)
578 rv
= ioctl(mdfd
, RUN_ARRAY
, NULL
);
580 rv
= sysfs_set_str(sra
, NULL
,
581 "array_state", "read-auto");
582 /* Array might be O_EXCL which will interfere with
583 * fsck and mount. So re-open without O_EXCL.
588 printf("MD_STARTED=yes\n");
589 } else if (c
->verbose
>= 0)
590 pr_err("%s attached to %s, which has been started.\n",
591 devname
, chosen_name
);
593 wait_for(chosen_name
, mdfd
);
594 /* We just started the array, so some devices
595 * might have been evicted from the array
596 * because their event counts were too old.
597 * If the action=re-add policy is in-force for
598 * those devices we should re-add them now.
600 for (dsk
= sra
->devs
; dsk
; dsk
= dsk
->next
) {
601 if (disk_action_allows(dsk
, st
->ss
->name
,
603 add_disk(mdfd
, st
, sra
, dsk
) == 0)
604 pr_err("%s re-added to %s\n",
605 dsk
->sys_name
, chosen_name
);
608 pr_err("%s attached to %s, but failed to start: %s.\n",
609 devname
, chosen_name
, strerror(errno
));
614 printf("MD_STARTED=unsafe\n");
615 } else if (journal_device_missing
) {
616 pr_err("Journal device is missing, not safe to start yet.\n");
617 } else if (c
->verbose
>= 0)
618 pr_err("%s attached to %s, not enough to start safely.\n",
619 devname
, chosen_name
);
629 dev_policy_free(policy
);
637 static void find_reject(int mdfd
, struct supertype
*st
, struct mdinfo
*sra
,
638 int number
, __u64 events
, int verbose
,
641 /* Find a device attached to this array with a disk.number of number
642 * and events less than the passed events, and remove the device.
646 if (md_array_active(mdfd
))
647 return; /* not safe to remove from active arrays
648 * without thinking more */
650 for (d
= sra
->devs
; d
; d
= d
->next
) {
651 char dn
[24]; // 2*11 bytes for ints (including sign) + colon + null byte
654 sprintf(dn
, "%d:%d", d
->disk
.major
, d
->disk
.minor
);
655 dfd
= dev_open(dn
, O_RDONLY
);
658 if (st
->ss
->load_super(st
, dfd
, NULL
)) {
662 st
->ss
->getinfo_super(st
, &info
, NULL
);
663 st
->ss
->free_super(st
);
666 if (info
.disk
.number
!= number
|| info
.events
>= events
)
669 if (d
->disk
.raid_disk
> -1)
670 sysfs_set_str(sra
, d
, "slot", "none");
671 if (sysfs_set_str(sra
, d
, "state", "remove") == 0)
673 pr_err("removing old device %s from %s\n",
674 d
->sys_name
+4, array_name
);
678 static int count_active(struct supertype
*st
, struct mdinfo
*sra
,
679 int mdfd
, char **availp
,
680 struct mdinfo
*bestinfo
)
682 /* count how many devices in sra think they are active */
686 __u64 max_events
= 0;
698 for (d
= sra
->devs
; d
; d
= d
->next
)
700 for (d
= sra
->devs
, devnum
= 0 ; d
; d
= d
->next
, devnum
++) {
706 sprintf(dn
, "%d:%d", d
->disk
.major
, d
->disk
.minor
);
707 dfd
= dev_open(dn
, O_RDONLY
);
710 ok
= st
->ss
->load_super(st
, dfd
, NULL
);
715 info
.array
.raid_disks
= raid_disks
;
716 st
->ss
->getinfo_super(st
, &info
, devmap
+ raid_disks
* devnum
);
717 if (info
.disk
.raid_disk
== MD_DISK_ROLE_JOURNAL
)
718 bestinfo
->journal_clean
= 1;
720 raid_disks
= info
.array
.raid_disks
;
721 avail
= xcalloc(raid_disks
, 1);
724 best
= xcalloc(raid_disks
, sizeof(int));
725 devmap
= xcalloc(raid_disks
, numdevs
);
727 st
->ss
->getinfo_super(st
, &info
, devmap
);
730 if (info
.disk
.state
& (1<<MD_DISK_SYNC
))
734 max_events
= info
.events
;
735 avail
[info
.disk
.raid_disk
] = 2;
736 best
[info
.disk
.raid_disk
] = devnum
;
737 st
->ss
->getinfo_super(st
, bestinfo
, NULL
);
738 } else if (info
.events
== max_events
) {
739 avail
[info
.disk
.raid_disk
] = 2;
740 best
[info
.disk
.raid_disk
] = devnum
;
741 } else if (info
.events
== max_events
-1) {
742 if (avail
[info
.disk
.raid_disk
] == 0) {
743 avail
[info
.disk
.raid_disk
] = 1;
744 best
[info
.disk
.raid_disk
] = devnum
;
746 } else if (info
.events
< max_events
- 1)
748 else if (info
.events
== max_events
+1) {
750 max_events
= info
.events
;
751 for (i
= 0; i
< raid_disks
; i
++)
754 avail
[info
.disk
.raid_disk
] = 2;
755 best
[info
.disk
.raid_disk
] = devnum
;
756 st
->ss
->getinfo_super(st
, bestinfo
, NULL
);
757 } else { /* info.events much bigger */
758 memset(avail
, 0, raid_disks
);
759 max_events
= info
.events
;
760 avail
[info
.disk
.raid_disk
] = 2;
761 best
[info
.disk
.raid_disk
] = devnum
;
762 st
->ss
->getinfo_super(st
, bestinfo
, NULL
);
764 } else if (info
.disk
.state
& (1<<MD_DISK_REPLACEMENT
))
766 st
->ss
->free_super(st
);
771 /* We need to reject any device that thinks the best device is
772 * failed or missing */
773 for (b
= 0; b
< raid_disks
; b
++)
777 for (i
= 0 ; i
< raid_disks
; i
++) {
778 if (i
!= b
&& avail
[i
])
779 if (devmap
[raid_disks
* best
[i
] + b
] == 0) {
780 /* This device thinks 'b' is failed -
783 for (d
=sra
->devs
; devnum
; d
= d
->next
)
785 d
->disk
.state
|= (1 << MD_DISK_REMOVED
);
791 /* Also need to reject any spare device with an event count that
794 for (d
= sra
->devs
; d
; d
= d
->next
) {
795 if (!(d
->disk
.state
& (1<<MD_DISK_SYNC
)) &&
796 d
->events
> max_events
)
797 d
->disk
.state
|= (1 << MD_DISK_REMOVED
);
801 return cnt
+ replcnt
;
804 /* test if container has degraded member(s) */
805 static int container_members_max_degradation(struct map_ent
*map
, struct map_ent
*me
)
807 mdu_array_info_t array
;
809 int max_degraded
= 0;
811 for(; map
; map
= map
->next
) {
812 if (!metadata_container_matches(map
->metadata
, me
->devnm
))
814 afd
= open_dev(map
->devnm
);
817 /* most accurate information regarding array degradation */
818 if (md_get_array_info(afd
, &array
) >= 0) {
819 int degraded
= array
.raid_disks
- array
.active_disks
-
821 if (degraded
> max_degraded
)
822 max_degraded
= degraded
;
829 static int array_try_spare(char *devname
, int *dfdp
, struct dev_policy
*pol
,
830 struct map_ent
*target
, int bare
,
831 struct supertype
*st
, int verbose
)
833 /* This device doesn't have any md metadata
834 * The device policy allows 'spare' and if !bare, it allows spare-same-slot.
835 * If 'st' is not set, then we only know that some metadata allows this,
836 * others possibly don't.
837 * So look for a container or array to attach the device to.
838 * Prefer 'target' if that is set and the array is found.
840 * If st is set, then only arrays of that type are considered
841 * Return 0 on success, or some exit code on failure, probably 1.
845 struct map_ent
*mp
, *map
= NULL
;
846 struct mdinfo
*chosen
= NULL
;
849 if (!fstat_is_blkdev(dfd
, devname
, &rdev
))
853 * Now we need to find a suitable array to add this to.
854 * We only accept arrays that:
856 * - are in the same domains as the device
857 * - are of an size for which the device will be useful
858 * and we choose the one that is the most degraded
861 if (map_lock(&map
)) {
862 pr_err("failed to get exclusive lock on mapfile\n");
865 for (mp
= map
; mp
; mp
= mp
->next
) {
866 struct supertype
*st2
;
867 struct domainlist
*dl
= NULL
;
869 unsigned long long devsize
;
870 unsigned long long component_size
= 0;
872 if (is_subarray(mp
->metadata
))
875 st2
= st
->ss
->match_metadata_desc(mp
->metadata
);
877 (st
->minor_version
>= 0 &&
878 st
->minor_version
!= st2
->minor_version
)) {
880 pr_err("not adding %s to %s as metadata type doesn't match\n",
887 sra
= sysfs_read(-1, mp
->devnm
,
888 GET_DEVS
|GET_OFFSET
|GET_SIZE
|GET_STATE
|
889 GET_DEGRADED
|GET_COMPONENT
|GET_VERSION
);
891 /* Probably a container - no degraded info */
892 sra
= sysfs_read(-1, mp
->devnm
,
893 GET_DEVS
|GET_OFFSET
|GET_SIZE
|GET_STATE
|
894 GET_COMPONENT
|GET_VERSION
);
896 sra
->array
.failed_disks
= -1;
903 for(i
= 0; !st2
&& superlist
[i
]; i
++)
904 st2
= superlist
[i
]->match_metadata_desc(
908 pr_err("not adding %s to %s as metadata not recognised.\n",
912 /* Need to double check the 'act_spare' permissions applies
915 if (!policy_action_allows(pol
, st2
->ss
->name
, act_spare
))
917 if (!bare
&& !policy_action_allows(pol
, st2
->ss
->name
,
918 act_spare_same_slot
))
922 /* update number of failed disks for mostly degraded
923 * container member */
924 if (sra
->array
.failed_disks
== -1)
925 sra
->array
.failed_disks
= container_members_max_degradation(map
, mp
);
927 get_dev_size(dfd
, NULL
, &devsize
);
928 if (sra
->component_size
== 0) {
929 /* true for containers, here we must read superblock
930 * to obtain minimum spare size */
931 struct supertype
*st3
= dup_super(st2
);
932 int mdfd
= open_dev(mp
->devnm
);
937 if (st3
->ss
->load_container
&&
938 !st3
->ss
->load_container(st3
, mdfd
, mp
->path
)) {
939 component_size
= st3
->ss
->min_acceptable_spare_size(st3
);
940 st3
->ss
->free_super(st3
);
945 if ((sra
->component_size
> 0 &&
946 st2
->ss
->avail_size(st2
, devsize
,
947 sra
->devs
? sra
->devs
->data_offset
:
949 sra
->component_size
) ||
950 (sra
->component_size
== 0 && devsize
< component_size
)) {
952 pr_err("not adding %s to %s as it is too small\n",
956 /* test against target.
957 * If 'target' is set and 'bare' is false, we only accept
958 * arrays/containers that match 'target'.
959 * If 'target' is set and 'bare' is true, we prefer the
960 * array which matches 'target'.
961 * target is considered only if we deal with degraded array
963 if (target
&& policy_action_allows(pol
, st2
->ss
->name
,
964 act_spare_same_slot
)) {
965 if (strcmp(target
->metadata
, mp
->metadata
) == 0 &&
966 memcmp(target
->uuid
, mp
->uuid
,
967 sizeof(target
->uuid
)) == 0 &&
968 sra
->array
.failed_disks
> 0) {
969 /* This is our target!! */
973 /* skip to end so we don't check any more */
983 dl
= domain_from_array(sra
, st2
->ss
->name
);
984 if (domain_test(dl
, pol
, st2
->ss
->name
) != 1) {
985 /* domain test fails */
987 pr_err("not adding %s to %s as it is not in a compatible domain\n",
992 /* all tests passed, OK to add to this array */
996 } else if (chosen
->array
.failed_disks
< sra
->array
.failed_disks
) {
1009 /* add current device to chosen array as a spare */
1010 int mdfd
= open_dev(chosen
->sys_name
);
1012 struct mddev_dev devlist
;
1013 char chosen_devname
[24]; // 2*11 for int (including signs) + colon + null
1014 devlist
.next
= NULL
;
1016 devlist
.writemostly
= FlagDefault
;
1017 devlist
.failfast
= FlagDefault
;
1018 devlist
.devname
= chosen_devname
;
1019 sprintf(chosen_devname
, "%d:%d", major(rdev
),
1021 devlist
.disposition
= 'a';
1024 rv
= Manage_subdevs(chosen
->sys_name
, mdfd
, &devlist
,
1030 pr_err("added %s as spare for %s\n",
1031 devname
, chosen
->sys_name
);
1033 pr_err("failed to add %s as spare for %s\n",
1034 devname
, chosen
->sys_name
);
1042 static int partition_try_spare(char *devname
, int *dfdp
, struct dev_policy
*pol
,
1043 struct supertype
*st
, int verbose
)
1045 /* we know that at least one partition virtual-metadata is
1046 * allowed to incorporate spares like this device. We need to
1047 * find a suitable device to copy partition information from.
1049 * Getting a list of all disk (not partition) devices is
1050 * slightly non-trivial. We could look at /sys/block, but
1051 * that is theoretically due to be removed. Maybe best to use
1052 * /dev/disk/by-path/?* and ignore names ending '-partNN' as
1053 * we depend on this directory of 'path' info. But that fails
1054 * to find loop devices and probably others. Maybe don't
1055 * worry about that, they aren't the real target.
1057 * So: check things in /dev/disk/by-path to see if they are in
1058 * a compatible domain, then load the partition table and see
1059 * if it is OK for the new device, and choose the largest
1060 * partition table that fits.
1064 char *chosen
= NULL
;
1065 unsigned long long chosen_size
= 0;
1066 struct supertype
*chosen_st
= NULL
;
1069 dir
= opendir("/dev/disk/by-path");
1072 while ((de
= readdir(dir
)) != NULL
) {
1074 struct dev_policy
*pol2
= NULL
;
1075 struct domainlist
*domlist
= NULL
;
1078 struct supertype
*st2
= NULL
;
1079 char *devname
= NULL
;
1080 unsigned long long devsectors
;
1082 if (de
->d_ino
== 0 || de
->d_name
[0] == '.' ||
1083 (de
->d_type
!= DT_LNK
&& de
->d_type
!= DT_UNKNOWN
))
1086 ep
= de
->d_name
+ strlen(de
->d_name
);
1087 while (ep
> de
->d_name
&&
1090 if (ep
> de
->d_name
+ 5 &&
1091 strncmp(ep
-5, "-part", 5) == 0)
1092 /* This is a partition - skip it */
1095 pol2
= path_policy(de
->d_name
, type_disk
);
1097 domain_merge(&domlist
, pol2
, st
? st
->ss
->name
: NULL
);
1098 if (domain_test(domlist
, pol
, st
? st
->ss
->name
: NULL
) != 1)
1099 /* new device is incompatible with this device. */
1102 domain_free(domlist
);
1105 if (asprintf(&devname
, "/dev/disk/by-path/%s", de
->d_name
) != 1) {
1109 fd
= open(devname
, O_RDONLY
);
1112 if (get_dev_size(fd
, devname
, &devsectors
) == 0)
1117 st2
= dup_super(st
);
1119 st2
= guess_super_type(fd
, guess_partitions
);
1120 if (st2
== NULL
|| st2
->ss
->load_super(st2
, fd
, NULL
) < 0)
1122 st2
->ignore_hw_compat
= 0;
1125 /* Check domain policy again, this time referring to metadata */
1126 domain_merge(&domlist
, pol2
, st2
->ss
->name
);
1127 if (domain_test(domlist
, pol
, st2
->ss
->name
) != 1)
1128 /* Incompatible devices for this metadata type */
1130 if (!policy_action_allows(pol
, st2
->ss
->name
, act_spare
))
1131 /* Some partition types allow sparing, but not
1137 st2
->ss
->getinfo_super(st2
, &info
, NULL
);
1138 if (info
.component_size
> devsectors
)
1139 /* This partitioning doesn't fit in the device */
1142 /* This is an acceptable device to copy partition
1143 * metadata from. We could just stop here, but I
1144 * think I want to keep looking incase a larger
1145 * metadata which makes better use of the device can
1148 if (chosen
== NULL
|| chosen_size
< info
.component_size
) {
1149 chosen_size
= info
.component_size
;
1154 chosen_st
->ss
->free_super(chosen_st
);
1163 domain_free(domlist
);
1164 dev_policy_free(pol2
);
1166 st2
->ss
->free_super(st2
);
1178 /* 'chosen' is the best device we can find. Let's write its
1179 * metadata to devname dfd is read-only so don't use that
1181 fd
= open(devname
, O_RDWR
);
1183 chosen_st
->ss
->store_super(chosen_st
, fd
);
1187 chosen_st
->ss
->free_super(chosen_st
);
1192 static int is_bare(int dfd
)
1194 unsigned long long size
= 0;
1195 char bufpad
[4096 + 4096];
1196 char *buf
= (char*)(((long)bufpad
+ 4096) & ~4095);
1198 if (lseek(dfd
, 0, SEEK_SET
) != 0 ||
1199 read(dfd
, buf
, 4096) != 4096)
1202 if (buf
[0] != '\0' && buf
[0] != '\x5a' && buf
[0] != '\xff')
1204 if (memcmp(buf
, buf
+1, 4095) != 0)
1207 /* OK, first 4K appear blank, try the end. */
1208 get_dev_size(dfd
, NULL
, &size
);
1209 if (lseek(dfd
, size
-4096, SEEK_SET
) < 0 ||
1210 read(dfd
, buf
, 4096) != 4096)
1213 if (buf
[0] != '\0' && buf
[0] != '\x5a' && buf
[0] != '\xff')
1215 if (memcmp(buf
, buf
+1, 4095) != 0)
1221 /* adding a spare to a regular array is quite different from adding one to
1222 * a set-of-partitions virtual array.
1223 * This function determines which is worth trying and tries as appropriate.
1224 * Arrays are given priority over partitions.
1226 static int try_spare(char *devname
, int *dfdp
, struct dev_policy
*pol
,
1227 struct map_ent
*target
,
1228 struct supertype
*st
, int verbose
)
1233 int partitions_ok
= 0;
1237 /* Can only add a spare if device has at least one domain */
1238 if (pol_find(pol
, pol_domain
) == NULL
)
1240 /* And only if some action allows spares */
1241 if (!policy_action_allows(pol
, st
?st
->ss
->name
:NULL
, act_spare
))
1244 /* Now check if the device is bare.
1245 * bare devices can always be added as a spare
1246 * non-bare devices can only be added if spare-same-slot is permitted,
1247 * and this device is replacing a previous device - in which case 'target'
1250 if (!is_bare(dfd
)) {
1251 /* Must have a target and allow same_slot */
1252 /* Later - may allow force_spare without target */
1254 !policy_action_allows(pol
, st
?st
->ss
->name
:NULL
,
1255 act_spare_same_slot
)) {
1257 pr_err("%s is not bare, so not considering as a spare\n",
1265 /* It might be OK to add this device to an array - need to see
1266 * what arrays might be candidates.
1269 /* just try try 'array' or 'partition' based on this metadata */
1270 if (st
->ss
->add_to_super
)
1271 return array_try_spare(devname
, dfdp
, pol
, target
, bare
,
1274 return partition_try_spare(devname
, dfdp
, pol
,
1277 /* No metadata was specified or found so options are open.
1278 * Check for whether any array metadata, or any partition metadata
1279 * might allow adding the spare. This check is just help to avoid
1280 * a more costly scan of all arrays when we can be sure that will
1283 for (i
= 0; (!arrays_ok
|| !partitions_ok
) && superlist
[i
] ; i
++) {
1284 if (superlist
[i
]->add_to_super
&& !arrays_ok
&&
1285 policy_action_allows(pol
, superlist
[i
]->name
, act_spare
))
1287 if (superlist
[i
]->add_to_super
== NULL
&& !partitions_ok
&&
1288 policy_action_allows(pol
, superlist
[i
]->name
, act_spare
))
1293 rv
= array_try_spare(devname
, dfdp
, pol
, target
, bare
,
1295 if (rv
!= 0 && partitions_ok
)
1296 rv
= partition_try_spare(devname
, dfdp
, pol
, st
, verbose
);
1300 int IncrementalScan(struct context
*c
, char *devnm
)
1302 /* look at every device listed in the 'map' file.
1303 * If one is found that is not running then:
1304 * look in mdadm.conf for bitmap file.
1305 * if one exists, but array has none, add it.
1306 * try to start array in auto-readonly mode
1308 struct map_ent
*mapl
= NULL
;
1310 struct mddev_ident
*devs
, *mddev
;
1316 devs
= conf_get_ident(NULL
);
1319 for (me
= mapl
; me
; me
= me
->next
) {
1320 mdu_array_info_t array
;
1324 if (devnm
&& strcmp(devnm
, me
->devnm
) != 0)
1326 if (me
->metadata
[0] == '/') {
1332 /* member array, need to work on container */
1333 strncpy(container
, me
->metadata
+1, 32);
1335 sl
= strchr(container
, '/');
1342 mdfd
= open_dev(me
->devnm
);
1346 if (!isdigit(me
->metadata
[0])) {
1347 /* must be a container */
1348 struct supertype
*st
= super_by_fd(mdfd
, NULL
);
1350 struct map_ent
*map
= NULL
;
1352 if (st
&& st
->ss
->load_container
)
1353 ret
= st
->ss
->load_container(st
, mdfd
, NULL
);
1355 if (!ret
&& st
&& st
->ss
->container_content
) {
1357 pr_err("failed to get exclusive lock on mapfile\n");
1358 ret
= Incremental_container(st
, me
->path
, c
, only
);
1365 if (md_get_array_info(mdfd
, &array
) == 0 || errno
!= ENODEV
) {
1369 /* Ok, we can try this one. Maybe it needs a bitmap */
1370 for (mddev
= devs
; mddev
; mddev
= mddev
->next
)
1371 if (mddev
->devname
&& me
->path
&&
1372 devname_matches(mddev
->devname
, me
->path
))
1374 if (mddev
&& mddev
->bitmap_file
) {
1376 * Note: early kernels will wrongly fail this, so it
1382 bmfd
= open(mddev
->bitmap_file
, O_RDWR
);
1384 added
= ioctl(mdfd
, SET_BITMAP_FILE
, bmfd
);
1387 if (c
->verbose
>= 0) {
1389 pr_err("Added bitmap %s to %s\n",
1390 mddev
->bitmap_file
, me
->path
);
1391 else if (errno
!= EEXIST
)
1392 pr_err("Failed to add bitmap to %s: %s\n",
1393 me
->path
, strerror(errno
));
1396 /* FIXME check for reshape_active and consider not
1399 sra
= sysfs_read(mdfd
, NULL
, 0);
1401 if (sysfs_set_str(sra
, NULL
,
1402 "array_state", "read-auto") == 0) {
1403 if (c
->verbose
>= 0)
1404 pr_err("started array %s\n",
1405 me
->path
?: me
->devnm
);
1407 pr_err("failed to start array %s: %s\n",
1408 me
->path
?: me
->devnm
,
1418 static char *container2devname(char *devname
)
1420 char *mdname
= NULL
;
1422 if (devname
[0] == '/') {
1423 int fd
= open(devname
, O_RDONLY
);
1425 mdname
= xstrdup(fd2devnm(fd
));
1430 struct map_ent
*mp
, *map
= NULL
;
1432 if (!parse_uuid(devname
, uuid
))
1434 mp
= map_by_uuid(&map
, uuid
);
1436 mdname
= xstrdup(mp
->devnm
);
1443 static int Incremental_container(struct supertype
*st
, char *devname
,
1444 struct context
*c
, char *only
)
1446 /* Collect the contents of this container and for each
1447 * array, choose a device name and assemble the array.
1450 struct mdinfo
*list
;
1452 struct map_ent
*map
= NULL
;
1455 struct mddev_ident
*match
;
1457 struct domainlist
*domains
;
1458 struct map_ent
*smp
;
1465 st
->ss
->getinfo_super(st
, &info
, NULL
);
1467 if ((c
->runstop
> 0 && info
.container_enough
>= 0) ||
1468 info
.container_enough
> 0)
1472 printf("MD_STARTED=no\n");
1473 } else if (c
->verbose
)
1474 pr_err("not enough devices to start the container\n");
1478 match
= conf_match(st
, &info
, devname
, c
->verbose
, &rv
);
1479 if (match
== NULL
&& rv
== 2)
1482 /* Need to compute 'trustworthy' */
1484 trustworthy
= LOCAL
;
1485 else if (st
->ss
->match_home(st
, c
->homehost
) == 1)
1486 trustworthy
= LOCAL
;
1487 else if (st
->ss
->match_home(st
, "any") == 1)
1488 trustworthy
= LOCAL
;
1490 trustworthy
= FOREIGN
;
1492 list
= st
->ss
->container_content(st
, NULL
);
1493 /* when nothing to activate - quit */
1496 printf("MD_STARTED=nothing\n");
1500 for (ra
= list
; ra
; ra
= ra
->next
) {
1502 char chosen_name
[1024];
1504 struct mddev_ident
*match
= NULL
;
1507 /* do not activate arrays blocked by metadata handler */
1508 if (ra
->array
.state
& (1 << MD_SB_BLOCK_VOLUME
)) {
1509 pr_err("Cannot activate array %s in %s.\n",
1510 ra
->text_version
, devname
);
1514 mp
= map_by_uuid(&map
, ra
->uuid
);
1517 mdfd
= open_dev(mp
->devnm
);
1519 strcpy(chosen_name
, mp
->path
);
1521 strcpy(chosen_name
, mp
->devnm
);
1524 /* Check in mdadm.conf for container == devname and
1525 * member == ra->text_version after second slash.
1527 char *sub
= strchr(ra
->text_version
+1, '/');
1528 struct mddev_ident
*array_list
;
1531 array_list
= conf_get_ident(NULL
);
1534 for(; array_list
; array_list
= array_list
->next
) {
1536 if (array_list
->member
== NULL
||
1537 array_list
->container
== NULL
)
1539 if (strcmp(array_list
->member
, sub
) != 0)
1541 if (array_list
->uuid_set
&&
1542 !same_uuid(ra
->uuid
, array_list
->uuid
, st
->ss
->swapuuid
))
1544 dn
= container2devname(array_list
->container
);
1547 if (strncmp(dn
, ra
->text_version
+1,
1549 ra
->text_version
[strlen(dn
)+1] != '/') {
1554 /* we have a match */
1557 pr_err("match found for member %s\n",
1558 array_list
->member
);
1562 if (match
&& match
->devname
&&
1563 strcasecmp(match
->devname
, "<ignore>") == 0) {
1565 pr_err("array %s/%s is explicitly ignored by mdadm.conf\n",
1566 match
->container
, match
->member
);
1570 trustworthy
= LOCAL
;
1572 mdfd
= create_mddev(match
? match
->devname
: NULL
,
1578 if (only
&& (!mp
|| strcmp(mp
->devnm
, only
) != 0))
1582 pr_err("failed to open %s: %s.\n",
1583 chosen_name
, strerror(errno
));
1587 assemble_container_content(st
, mdfd
, ra
, c
,
1588 chosen_name
, &result
);
1591 if (c
->export
&& result
) {
1593 printf("MD_STARTED");
1594 if (result
& INCR_NO
) {
1595 printf("%cno", sep
);
1598 if (result
& INCR_UNSAFE
) {
1599 printf("%cunsafe", sep
);
1602 if (result
& INCR_ALREADY
) {
1603 printf("%calready", sep
);
1606 if (result
& INCR_YES
) {
1607 printf("%cyes", sep
);
1613 /* don't move spares to container with volume being activated
1614 when all volumes are blocked */
1615 if (ra_all
== ra_blocked
)
1618 /* Now move all suitable spares from spare container */
1619 domains
= domain_from_array(list
, st
->ss
->name
);
1620 memcpy(suuid
, uuid_zero
, sizeof(int[4]));
1622 (smp
= map_by_uuid(&map
, suuid
)) != NULL
&&
1623 (sfd
= open(smp
->path
, O_RDONLY
)) >= 0) {
1624 /* spare container found */
1625 struct supertype
*sst
=
1626 super_imsm
.match_metadata_desc("imsm");
1627 struct mdinfo
*sinfo
;
1628 unsigned long long min_size
= 0;
1629 if (st
->ss
->min_acceptable_spare_size
)
1630 min_size
= st
->ss
->min_acceptable_spare_size(st
);
1631 if (!sst
->ss
->load_container(sst
, sfd
, NULL
)) {
1633 sinfo
= container_choose_spares(sst
, min_size
,
1636 sst
->ss
->free_super(sst
);
1639 struct mdinfo
*disks
= sinfo
->devs
;
1641 /* move spare from spare
1642 * container to currently
1648 makedev(disks
->disk
.major
,
1649 disks
->disk
.minor
)))
1651 disks
= disks
->next
;
1654 pr_err("Added %d spare%s to %s\n",
1655 count
, count
>1?"s":"", devname
);
1661 domain_free(domains
);
1665 static void run_udisks(char *arg1
, char *arg2
)
1670 execl("/usr/bin/udisks", "udisks", arg1
, arg2
, NULL
);
1671 execl("/bin/udisks", "udisks", arg1
, arg2
, NULL
);
1674 while (pid
> 0 && wait(&status
) != pid
)
1679 * IncrementalRemove - Attempt to see if the passed in device belongs to any
1680 * raid arrays, and if so first fail (if needed) and then remove the device.
1682 * @devname - The device we want to remove
1683 * @id_path - name as found in /dev/disk/by-path for this device
1685 * Note: the device name must be a kernel name like "sda", so
1686 * that we can find it in /proc/mdstat
1688 int IncrementalRemove(char *devname
, char *id_path
, int verbose
)
1692 struct mdstat_ent
*ent
;
1693 struct mddev_dev devlist
;
1698 dprintf("incremental removal without --path <id_path> lacks the possibility to re-add new device in this port\n");
1700 if (strchr(devname
, '/')) {
1701 pr_err("incremental removal requires a kernel device name, not a file: %s\n", devname
);
1704 ent
= mdstat_by_component(devname
);
1707 pr_err("%s does not appear to be a component of any array\n", devname
);
1710 if (sysfs_init(&mdi
, -1, ent
->devnm
)) {
1711 pr_err("unable to initialize sysfs for: %s\n", devname
);
1714 mdfd
= open_dev_excl(ent
->devnm
);
1717 if (sysfs_get_str(&mdi
, NULL
, "array_state",
1718 buf
, sizeof(buf
)) > 0) {
1719 if (strncmp(buf
, "active", 6) == 0 ||
1720 strncmp(buf
, "clean", 5) == 0)
1721 sysfs_set_str(&mdi
, NULL
,
1722 "array_state", "read-auto");
1725 mdfd
= open_dev(ent
->devnm
);
1728 pr_err("Cannot open array %s!!\n", ent
->devnm
);
1734 struct map_ent
*map
= NULL
, *me
;
1735 me
= map_by_devnm(&map
, ent
->devnm
);
1737 policy_save_path(id_path
, me
);
1741 memset(&devlist
, 0, sizeof(devlist
));
1742 devlist
.devname
= devname
;
1743 devlist
.disposition
= 'f';
1744 /* for a container, we must fail each member array */
1745 if (ent
->metadata_version
&&
1746 strncmp(ent
->metadata_version
, "external:", 9) == 0) {
1747 struct mdstat_ent
*mdstat
= mdstat_read(0, 0);
1748 struct mdstat_ent
*memb
;
1749 for (memb
= mdstat
; memb
; memb
= memb
->next
)
1750 if (is_container_member(memb
, ent
->devnm
)) {
1751 int subfd
= open_dev(memb
->devnm
);
1753 rv
|= Manage_subdevs(
1755 &devlist
, verbose
, 0,
1760 free_mdstat(mdstat
);
1762 rv
|= Manage_subdevs(ent
->devnm
, mdfd
, &devlist
,
1763 verbose
, 0, NULL
, 0);
1765 /* Failed due to EBUSY, try to stop the array.
1766 * Give udisks a chance to unmount it first.
1768 int devid
= devnm2devid(ent
->devnm
);
1769 run_udisks("--unmount", map_dev(major(devid
),minor(devid
), 0));
1770 rv
= Manage_stop(ent
->devnm
, mdfd
, verbose
, 1);
1772 /* At least we can try to trigger a 'remove' */
1773 sysfs_uevent(&mdi
, "remove");
1776 pr_err("Fail to stop %s too.\n", ent
->devnm
);
1779 devlist
.disposition
= 'r';
1780 rv
= Manage_subdevs(ent
->devnm
, mdfd
, &devlist
,
1781 verbose
, 0, NULL
, 0);