]>
git.ipfire.org Git - thirdparty/mdadm.git/blob - Incremental.c
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;
687 __u64 max_journal_events
= 0;
699 for (d
= sra
->devs
; d
; d
= d
->next
)
701 for (d
= sra
->devs
, devnum
= 0 ; d
; d
= d
->next
, devnum
++) {
707 sprintf(dn
, "%d:%d", d
->disk
.major
, d
->disk
.minor
);
708 dfd
= dev_open(dn
, O_RDONLY
);
711 ok
= st
->ss
->load_super(st
, dfd
, NULL
);
716 info
.array
.raid_disks
= raid_disks
;
717 st
->ss
->getinfo_super(st
, &info
, devmap
+ raid_disks
* devnum
);
718 if (info
.disk
.raid_disk
== MD_DISK_ROLE_JOURNAL
&&
719 info
.events
> max_journal_events
)
720 max_journal_events
= info
.events
;
722 raid_disks
= info
.array
.raid_disks
;
723 avail
= xcalloc(raid_disks
, 1);
726 best
= xcalloc(raid_disks
, sizeof(int));
727 devmap
= xcalloc(raid_disks
, numdevs
);
729 st
->ss
->getinfo_super(st
, &info
, devmap
);
732 if (info
.disk
.state
& (1<<MD_DISK_SYNC
))
736 max_events
= info
.events
;
737 avail
[info
.disk
.raid_disk
] = 2;
738 best
[info
.disk
.raid_disk
] = devnum
;
739 st
->ss
->getinfo_super(st
, bestinfo
, NULL
);
740 } else if (info
.events
== max_events
) {
741 avail
[info
.disk
.raid_disk
] = 2;
742 best
[info
.disk
.raid_disk
] = devnum
;
743 } else if (info
.events
== max_events
-1) {
744 if (avail
[info
.disk
.raid_disk
] == 0) {
745 avail
[info
.disk
.raid_disk
] = 1;
746 best
[info
.disk
.raid_disk
] = devnum
;
748 } else if (info
.events
< max_events
- 1)
750 else if (info
.events
== max_events
+1) {
752 max_events
= info
.events
;
753 for (i
= 0; i
< raid_disks
; i
++)
756 avail
[info
.disk
.raid_disk
] = 2;
757 best
[info
.disk
.raid_disk
] = devnum
;
758 st
->ss
->getinfo_super(st
, bestinfo
, NULL
);
759 } else { /* info.events much bigger */
760 memset(avail
, 0, raid_disks
);
761 max_events
= info
.events
;
762 avail
[info
.disk
.raid_disk
] = 2;
763 best
[info
.disk
.raid_disk
] = devnum
;
764 st
->ss
->getinfo_super(st
, bestinfo
, NULL
);
766 } else if (info
.disk
.state
& (1<<MD_DISK_REPLACEMENT
))
768 st
->ss
->free_super(st
);
770 if (max_journal_events
>= max_events
- 1)
771 bestinfo
->journal_clean
= 1;
775 /* We need to reject any device that thinks the best device is
776 * failed or missing */
777 for (b
= 0; b
< raid_disks
; b
++)
781 for (i
= 0 ; i
< raid_disks
; i
++) {
782 if (i
!= b
&& avail
[i
])
783 if (devmap
[raid_disks
* best
[i
] + b
] == 0) {
784 /* This device thinks 'b' is failed -
787 for (d
=sra
->devs
; devnum
; d
= d
->next
)
789 d
->disk
.state
|= (1 << MD_DISK_REMOVED
);
795 /* Also need to reject any spare device with an event count that
798 for (d
= sra
->devs
; d
; d
= d
->next
) {
799 if (!(d
->disk
.state
& (1<<MD_DISK_SYNC
)) &&
800 d
->events
> max_events
)
801 d
->disk
.state
|= (1 << MD_DISK_REMOVED
);
805 return cnt
+ replcnt
;
808 /* test if container has degraded member(s) */
810 container_members_max_degradation(struct map_ent
*map
, struct map_ent
*me
)
813 int degraded
, max_degraded
= 0;
815 for(; map
; map
= map
->next
) {
816 if (!metadata_container_matches(map
->metadata
, me
->devnm
))
818 /* most accurate information regarding array degradation */
819 sra
= sysfs_read(-1, map
->devnm
,
820 GET_DISKS
| GET_DEVS
| GET_STATE
);
823 degraded
= sra
->array
.raid_disks
- sra
->array
.active_disks
-
824 sra
->array
.spare_disks
;
825 if (degraded
> max_degraded
)
826 max_degraded
= degraded
;
833 static int array_try_spare(char *devname
, int *dfdp
, struct dev_policy
*pol
,
834 struct map_ent
*target
, int bare
,
835 struct supertype
*st
, int verbose
)
837 /* This device doesn't have any md metadata
838 * The device policy allows 'spare' and if !bare, it allows spare-same-slot.
839 * If 'st' is not set, then we only know that some metadata allows this,
840 * others possibly don't.
841 * So look for a container or array to attach the device to.
842 * Prefer 'target' if that is set and the array is found.
844 * If st is set, then only arrays of that type are considered
845 * Return 0 on success, or some exit code on failure, probably 1.
849 struct map_ent
*mp
, *map
= NULL
;
850 struct mdinfo
*chosen
= NULL
;
853 if (!fstat_is_blkdev(dfd
, devname
, &rdev
))
857 * Now we need to find a suitable array to add this to.
858 * We only accept arrays that:
860 * - are in the same domains as the device
861 * - are of an size for which the device will be useful
862 * and we choose the one that is the most degraded
865 if (map_lock(&map
)) {
866 pr_err("failed to get exclusive lock on mapfile\n");
869 for (mp
= map
; mp
; mp
= mp
->next
) {
870 struct supertype
*st2
;
871 struct domainlist
*dl
= NULL
;
873 unsigned long long devsize
, freesize
= 0;
874 struct spare_criteria sc
= {0, 0};
876 if (is_subarray(mp
->metadata
))
879 st2
= st
->ss
->match_metadata_desc(mp
->metadata
);
881 (st
->minor_version
>= 0 &&
882 st
->minor_version
!= st2
->minor_version
)) {
884 pr_err("not adding %s to %s as metadata type doesn't match\n",
891 sra
= sysfs_read(-1, mp
->devnm
,
892 GET_DEVS
|GET_OFFSET
|GET_SIZE
|GET_STATE
|
893 GET_COMPONENT
|GET_VERSION
);
895 sra
->array
.failed_disks
= -1;
901 for(i
= 0; !st2
&& superlist
[i
]; i
++)
902 st2
= superlist
[i
]->match_metadata_desc(
906 pr_err("not adding %s to %s as metadata not recognised.\n",
910 /* Need to double check the 'act_spare' permissions applies
913 if (!policy_action_allows(pol
, st2
->ss
->name
, act_spare
))
915 if (!bare
&& !policy_action_allows(pol
, st2
->ss
->name
,
916 act_spare_same_slot
))
920 /* update number of failed disks for mostly degraded
921 * container member */
922 if (sra
->array
.failed_disks
== -1)
923 sra
->array
.failed_disks
= container_members_max_degradation(map
, mp
);
925 get_dev_size(dfd
, NULL
, &devsize
);
926 if (sra
->component_size
== 0) {
927 /* true for containers, here we must read superblock
928 * to obtain minimum spare size */
929 struct supertype
*st3
= dup_super(st2
);
930 int mdfd
= open_dev(mp
->devnm
);
935 if (st3
->ss
->load_container
&&
936 !st3
->ss
->load_container(st3
, mdfd
, mp
->path
)) {
937 if (st3
->ss
->get_spare_criteria
)
938 st3
->ss
->get_spare_criteria(st3
, &sc
);
939 st3
->ss
->free_super(st3
);
944 if ((sra
->component_size
> 0 &&
945 st2
->ss
->validate_geometry(st2
, sra
->array
.level
, sra
->array
.layout
,
946 sra
->array
.raid_disks
, &sra
->array
.chunk_size
,
948 sra
->devs
? sra
->devs
->data_offset
: INVALID_SECTORS
,
949 devname
, &freesize
, sra
->consistency_policy
,
951 freesize
< sra
->component_size
) ||
952 (sra
->component_size
== 0 && devsize
< sc
.min_size
)) {
954 pr_err("not adding %s to %s as it is too small\n",
958 /* test against target.
959 * If 'target' is set and 'bare' is false, we only accept
960 * arrays/containers that match 'target'.
961 * If 'target' is set and 'bare' is true, we prefer the
962 * array which matches 'target'.
963 * target is considered only if we deal with degraded array
965 if (target
&& policy_action_allows(pol
, st2
->ss
->name
,
966 act_spare_same_slot
)) {
967 if (strcmp(target
->metadata
, mp
->metadata
) == 0 &&
968 memcmp(target
->uuid
, mp
->uuid
,
969 sizeof(target
->uuid
)) == 0 &&
970 sra
->array
.failed_disks
> 0) {
971 /* This is our target!! */
975 /* skip to end so we don't check any more */
985 dl
= domain_from_array(sra
, st2
->ss
->name
);
986 if (domain_test(dl
, pol
, st2
->ss
->name
) != 1) {
987 /* domain test fails */
989 pr_err("not adding %s to %s as it is not in a compatible domain\n",
994 /* all tests passed, OK to add to this array */
998 } else if (chosen
->array
.failed_disks
< sra
->array
.failed_disks
) {
1011 /* add current device to chosen array as a spare */
1012 int mdfd
= open_dev(chosen
->sys_name
);
1014 struct mddev_dev devlist
;
1015 char chosen_devname
[24]; // 2*11 for int (including signs) + colon + null
1016 devlist
.next
= NULL
;
1018 devlist
.writemostly
= FlagDefault
;
1019 devlist
.failfast
= FlagDefault
;
1020 devlist
.devname
= chosen_devname
;
1021 sprintf(chosen_devname
, "%d:%d", major(rdev
),
1023 devlist
.disposition
= 'a';
1026 rv
= Manage_subdevs(chosen
->sys_name
, mdfd
, &devlist
,
1032 pr_err("added %s as spare for %s\n",
1033 devname
, chosen
->sys_name
);
1035 pr_err("failed to add %s as spare for %s\n",
1036 devname
, chosen
->sys_name
);
1044 static int partition_try_spare(char *devname
, int *dfdp
, struct dev_policy
*pol
,
1045 struct supertype
*st
, int verbose
)
1047 /* we know that at least one partition virtual-metadata is
1048 * allowed to incorporate spares like this device. We need to
1049 * find a suitable device to copy partition information from.
1051 * Getting a list of all disk (not partition) devices is
1052 * slightly non-trivial. We could look at /sys/block, but
1053 * that is theoretically due to be removed. Maybe best to use
1054 * /dev/disk/by-path/?* and ignore names ending '-partNN' as
1055 * we depend on this directory of 'path' info. But that fails
1056 * to find loop devices and probably others. Maybe don't
1057 * worry about that, they aren't the real target.
1059 * So: check things in /dev/disk/by-path to see if they are in
1060 * a compatible domain, then load the partition table and see
1061 * if it is OK for the new device, and choose the largest
1062 * partition table that fits.
1066 char *chosen
= NULL
;
1067 unsigned long long chosen_size
= 0;
1068 struct supertype
*chosen_st
= NULL
;
1071 dir
= opendir("/dev/disk/by-path");
1074 while ((de
= readdir(dir
)) != NULL
) {
1076 struct dev_policy
*pol2
= NULL
;
1077 struct domainlist
*domlist
= NULL
;
1080 struct supertype
*st2
= NULL
;
1081 char *devname
= NULL
;
1082 unsigned long long devsectors
;
1084 if (de
->d_ino
== 0 || de
->d_name
[0] == '.' ||
1085 (de
->d_type
!= DT_LNK
&& de
->d_type
!= DT_UNKNOWN
))
1088 ep
= de
->d_name
+ strlen(de
->d_name
);
1089 while (ep
> de
->d_name
&&
1092 if (ep
> de
->d_name
+ 5 &&
1093 strncmp(ep
-5, "-part", 5) == 0)
1094 /* This is a partition - skip it */
1097 pol2
= path_policy(de
->d_name
, type_disk
);
1099 domain_merge(&domlist
, pol2
, st
? st
->ss
->name
: NULL
);
1100 if (domain_test(domlist
, pol
, st
? st
->ss
->name
: NULL
) != 1)
1101 /* new device is incompatible with this device. */
1104 domain_free(domlist
);
1107 if (asprintf(&devname
, "/dev/disk/by-path/%s", de
->d_name
) != 1) {
1111 fd
= open(devname
, O_RDONLY
);
1114 if (get_dev_size(fd
, devname
, &devsectors
) == 0)
1119 st2
= dup_super(st
);
1121 st2
= guess_super_type(fd
, guess_partitions
);
1122 if (st2
== NULL
|| st2
->ss
->load_super(st2
, fd
, NULL
) < 0)
1124 st2
->ignore_hw_compat
= 0;
1127 /* Check domain policy again, this time referring to metadata */
1128 domain_merge(&domlist
, pol2
, st2
->ss
->name
);
1129 if (domain_test(domlist
, pol
, st2
->ss
->name
) != 1)
1130 /* Incompatible devices for this metadata type */
1132 if (!policy_action_allows(pol
, st2
->ss
->name
, act_spare
))
1133 /* Some partition types allow sparing, but not
1139 st2
->ss
->getinfo_super(st2
, &info
, NULL
);
1140 if (info
.component_size
> devsectors
)
1141 /* This partitioning doesn't fit in the device */
1144 /* This is an acceptable device to copy partition
1145 * metadata from. We could just stop here, but I
1146 * think I want to keep looking incase a larger
1147 * metadata which makes better use of the device can
1150 if (chosen
== NULL
|| chosen_size
< info
.component_size
) {
1151 chosen_size
= info
.component_size
;
1156 chosen_st
->ss
->free_super(chosen_st
);
1165 domain_free(domlist
);
1166 dev_policy_free(pol2
);
1168 st2
->ss
->free_super(st2
);
1180 /* 'chosen' is the best device we can find. Let's write its
1181 * metadata to devname dfd is read-only so don't use that
1183 fd
= open(devname
, O_RDWR
);
1185 chosen_st
->ss
->store_super(chosen_st
, fd
);
1189 chosen_st
->ss
->free_super(chosen_st
);
1194 static int is_bare(int dfd
)
1196 unsigned long long size
= 0;
1197 char bufpad
[4096 + 4096];
1198 char *buf
= (char*)(((long)bufpad
+ 4096) & ~4095);
1200 if (lseek(dfd
, 0, SEEK_SET
) != 0 ||
1201 read(dfd
, buf
, 4096) != 4096)
1204 if (buf
[0] != '\0' && buf
[0] != '\x5a' && buf
[0] != '\xff')
1206 if (memcmp(buf
, buf
+1, 4095) != 0)
1209 /* OK, first 4K appear blank, try the end. */
1210 get_dev_size(dfd
, NULL
, &size
);
1211 if (lseek(dfd
, size
-4096, SEEK_SET
) < 0 ||
1212 read(dfd
, buf
, 4096) != 4096)
1215 if (buf
[0] != '\0' && buf
[0] != '\x5a' && buf
[0] != '\xff')
1217 if (memcmp(buf
, buf
+1, 4095) != 0)
1223 /* adding a spare to a regular array is quite different from adding one to
1224 * a set-of-partitions virtual array.
1225 * This function determines which is worth trying and tries as appropriate.
1226 * Arrays are given priority over partitions.
1228 static int try_spare(char *devname
, int *dfdp
, struct dev_policy
*pol
,
1229 struct map_ent
*target
,
1230 struct supertype
*st
, int verbose
)
1235 int partitions_ok
= 0;
1239 /* Can only add a spare if device has at least one domain */
1240 if (pol_find(pol
, pol_domain
) == NULL
)
1242 /* And only if some action allows spares */
1243 if (!policy_action_allows(pol
, st
?st
->ss
->name
:NULL
, act_spare
))
1246 /* Now check if the device is bare.
1247 * bare devices can always be added as a spare
1248 * non-bare devices can only be added if spare-same-slot is permitted,
1249 * and this device is replacing a previous device - in which case 'target'
1252 if (!is_bare(dfd
)) {
1253 /* Must have a target and allow same_slot */
1254 /* Later - may allow force_spare without target */
1256 !policy_action_allows(pol
, st
?st
->ss
->name
:NULL
,
1257 act_spare_same_slot
)) {
1259 pr_err("%s is not bare, so not considering as a spare\n",
1267 /* It might be OK to add this device to an array - need to see
1268 * what arrays might be candidates.
1271 /* just try to add 'array' or 'partition' based on this metadata */
1272 if (st
->ss
->add_to_super
)
1273 return array_try_spare(devname
, dfdp
, pol
, target
, bare
,
1276 return partition_try_spare(devname
, dfdp
, pol
,
1279 /* No metadata was specified or found so options are open.
1280 * Check for whether any array metadata, or any partition metadata
1281 * might allow adding the spare. This check is just help to avoid
1282 * a more costly scan of all arrays when we can be sure that will
1285 for (i
= 0; (!arrays_ok
|| !partitions_ok
) && superlist
[i
] ; i
++) {
1286 if (superlist
[i
]->add_to_super
&& !arrays_ok
&&
1287 policy_action_allows(pol
, superlist
[i
]->name
, act_spare
))
1289 if (superlist
[i
]->add_to_super
== NULL
&& !partitions_ok
&&
1290 policy_action_allows(pol
, superlist
[i
]->name
, act_spare
))
1295 rv
= array_try_spare(devname
, dfdp
, pol
, target
, bare
,
1297 if (rv
!= 0 && partitions_ok
)
1298 rv
= partition_try_spare(devname
, dfdp
, pol
, st
, verbose
);
1302 int IncrementalScan(struct context
*c
, char *devnm
)
1304 /* look at every device listed in the 'map' file.
1305 * If one is found that is not running then:
1306 * look in mdadm.conf for bitmap file.
1307 * if one exists, but array has none, add it.
1308 * try to start array in auto-readonly mode
1310 struct map_ent
*mapl
= NULL
;
1312 struct mddev_ident
*devs
, *mddev
;
1318 devs
= conf_get_ident(NULL
);
1321 for (me
= mapl
; me
; me
= me
->next
) {
1325 if (devnm
&& strcmp(devnm
, me
->devnm
) != 0)
1327 if (me
->metadata
[0] == '/') {
1333 /* member array, need to work on container */
1334 strncpy(container
, me
->metadata
+1, 32);
1336 sl
= strchr(container
, '/');
1343 mdfd
= open_dev(me
->devnm
);
1347 if (!isdigit(me
->metadata
[0])) {
1348 /* must be a container */
1349 struct supertype
*st
= super_by_fd(mdfd
, NULL
);
1351 struct map_ent
*map
= NULL
;
1353 if (st
&& st
->ss
->load_container
)
1354 ret
= st
->ss
->load_container(st
, mdfd
, NULL
);
1356 if (!ret
&& st
&& st
->ss
->container_content
) {
1358 pr_err("failed to get exclusive lock on mapfile\n");
1359 ret
= Incremental_container(st
, me
->path
, c
, only
);
1366 if (md_array_active(mdfd
)) {
1370 /* Ok, we can try this one. Maybe it needs a bitmap */
1371 for (mddev
= devs
; mddev
; mddev
= mddev
->next
)
1372 if (mddev
->devname
&& me
->path
&&
1373 devname_matches(mddev
->devname
, me
->path
))
1375 if (mddev
&& mddev
->bitmap_file
) {
1377 * Note: early kernels will wrongly fail this, so it
1383 bmfd
= open(mddev
->bitmap_file
, O_RDWR
);
1385 added
= ioctl(mdfd
, SET_BITMAP_FILE
, bmfd
);
1388 if (c
->verbose
>= 0) {
1390 pr_err("Added bitmap %s to %s\n",
1391 mddev
->bitmap_file
, me
->path
);
1392 else if (errno
!= EEXIST
)
1393 pr_err("Failed to add bitmap to %s: %s\n",
1394 me
->path
, strerror(errno
));
1397 /* FIXME check for reshape_active and consider not
1400 sra
= sysfs_read(mdfd
, NULL
, 0);
1402 if (sysfs_set_str(sra
, NULL
,
1403 "array_state", "read-auto") == 0) {
1404 if (c
->verbose
>= 0)
1405 pr_err("started array %s\n",
1406 me
->path
?: me
->devnm
);
1408 pr_err("failed to start array %s: %s\n",
1409 me
->path
?: me
->devnm
,
1419 static char *container2devname(char *devname
)
1421 char *mdname
= NULL
;
1423 if (devname
[0] == '/') {
1424 int fd
= open(devname
, O_RDONLY
);
1426 mdname
= xstrdup(fd2devnm(fd
));
1431 struct map_ent
*mp
, *map
= NULL
;
1433 if (!parse_uuid(devname
, uuid
))
1435 mp
= map_by_uuid(&map
, uuid
);
1437 mdname
= xstrdup(mp
->devnm
);
1444 static int Incremental_container(struct supertype
*st
, char *devname
,
1445 struct context
*c
, char *only
)
1447 /* Collect the contents of this container and for each
1448 * array, choose a device name and assemble the array.
1451 struct mdinfo
*list
;
1453 struct map_ent
*map
= NULL
;
1456 struct mddev_ident
*match
;
1458 struct domainlist
*domains
;
1459 struct map_ent
*smp
;
1466 st
->ss
->getinfo_super(st
, &info
, NULL
);
1468 if ((c
->runstop
> 0 && info
.container_enough
>= 0) ||
1469 info
.container_enough
> 0)
1473 printf("MD_STARTED=no\n");
1474 } else if (c
->verbose
)
1475 pr_err("not enough devices to start the container\n");
1479 match
= conf_match(st
, &info
, devname
, c
->verbose
, &rv
);
1480 if (match
== NULL
&& rv
== 2)
1483 /* Need to compute 'trustworthy' */
1485 trustworthy
= LOCAL
;
1486 else if (st
->ss
->match_home(st
, c
->homehost
) == 1)
1487 trustworthy
= LOCAL
;
1488 else if (st
->ss
->match_home(st
, "any") == 1)
1489 trustworthy
= LOCAL
;
1491 trustworthy
= FOREIGN
;
1493 list
= st
->ss
->container_content(st
, NULL
);
1494 /* when nothing to activate - quit */
1497 printf("MD_STARTED=nothing\n");
1501 for (ra
= list
; ra
; ra
= ra
->next
) {
1503 char chosen_name
[1024];
1505 struct mddev_ident
*match
= NULL
;
1508 /* do not activate arrays blocked by metadata handler */
1509 if (ra
->array
.state
& (1 << MD_SB_BLOCK_VOLUME
)) {
1510 pr_err("Cannot activate array %s in %s.\n",
1511 ra
->text_version
, devname
);
1515 mp
= map_by_uuid(&map
, ra
->uuid
);
1518 mdfd
= open_dev(mp
->devnm
);
1520 strcpy(chosen_name
, mp
->path
);
1522 strcpy(chosen_name
, mp
->devnm
);
1525 /* Check in mdadm.conf for container == devname and
1526 * member == ra->text_version after second slash.
1528 char *sub
= strchr(ra
->text_version
+1, '/');
1529 struct mddev_ident
*array_list
;
1532 array_list
= conf_get_ident(NULL
);
1535 for(; array_list
; array_list
= array_list
->next
) {
1537 if (array_list
->member
== NULL
||
1538 array_list
->container
== NULL
)
1540 if (strcmp(array_list
->member
, sub
) != 0)
1542 if (array_list
->uuid_set
&&
1543 !same_uuid(ra
->uuid
, array_list
->uuid
, st
->ss
->swapuuid
))
1545 dn
= container2devname(array_list
->container
);
1548 if (strncmp(dn
, ra
->text_version
+1,
1550 ra
->text_version
[strlen(dn
)+1] != '/') {
1555 /* we have a match */
1558 pr_err("match found for member %s\n",
1559 array_list
->member
);
1563 if (match
&& match
->devname
&&
1564 strcasecmp(match
->devname
, "<ignore>") == 0) {
1566 pr_err("array %s/%s is explicitly ignored by mdadm.conf\n",
1567 match
->container
, match
->member
);
1571 trustworthy
= LOCAL
;
1573 mdfd
= create_mddev(match
? match
->devname
: NULL
,
1579 if (only
&& (!mp
|| strcmp(mp
->devnm
, only
) != 0))
1583 pr_err("failed to open %s: %s.\n",
1584 chosen_name
, strerror(errno
));
1588 assemble_container_content(st
, mdfd
, ra
, c
,
1589 chosen_name
, &result
);
1592 if (c
->export
&& result
) {
1594 printf("MD_STARTED");
1595 if (result
& INCR_NO
) {
1596 printf("%cno", sep
);
1599 if (result
& INCR_UNSAFE
) {
1600 printf("%cunsafe", sep
);
1603 if (result
& INCR_ALREADY
) {
1604 printf("%calready", sep
);
1607 if (result
& INCR_YES
) {
1608 printf("%cyes", sep
);
1614 /* don't move spares to container with volume being activated
1615 when all volumes are blocked */
1616 if (ra_all
== ra_blocked
)
1619 /* Now move all suitable spares from spare container */
1620 domains
= domain_from_array(list
, st
->ss
->name
);
1621 memcpy(suuid
, uuid_zero
, sizeof(int[4]));
1623 (smp
= map_by_uuid(&map
, suuid
)) != NULL
&&
1624 (sfd
= open(smp
->path
, O_RDONLY
)) >= 0) {
1625 /* spare container found */
1626 struct supertype
*sst
=
1627 super_imsm
.match_metadata_desc("imsm");
1628 struct mdinfo
*sinfo
;
1630 if (!sst
->ss
->load_container(sst
, sfd
, NULL
)) {
1631 struct spare_criteria sc
= {0, 0};
1633 if (st
->ss
->get_spare_criteria
)
1634 st
->ss
->get_spare_criteria(st
, &sc
);
1637 sinfo
= container_choose_spares(sst
, &sc
,
1640 sst
->ss
->free_super(sst
);
1643 struct mdinfo
*disks
= sinfo
->devs
;
1645 /* move spare from spare
1646 * container to currently
1652 makedev(disks
->disk
.major
,
1653 disks
->disk
.minor
)))
1655 disks
= disks
->next
;
1658 pr_err("Added %d spare%s to %s\n",
1659 count
, count
>1?"s":"", devname
);
1665 domain_free(domains
);
1669 static void run_udisks(char *arg1
, char *arg2
)
1674 execl("/usr/bin/udisks", "udisks", arg1
, arg2
, NULL
);
1675 execl("/bin/udisks", "udisks", arg1
, arg2
, NULL
);
1678 while (pid
> 0 && wait(&status
) != pid
)
1683 * IncrementalRemove - Attempt to see if the passed in device belongs to any
1684 * raid arrays, and if so first fail (if needed) and then remove the device.
1686 * @devname - The device we want to remove
1687 * @id_path - name as found in /dev/disk/by-path for this device
1689 * Note: the device name must be a kernel name like "sda", so
1690 * that we can find it in /proc/mdstat
1692 int IncrementalRemove(char *devname
, char *id_path
, int verbose
)
1696 struct mdstat_ent
*ent
;
1697 struct mddev_dev devlist
;
1702 dprintf("incremental removal without --path <id_path> lacks the possibility to re-add new device in this port\n");
1704 if (strchr(devname
, '/')) {
1705 pr_err("incremental removal requires a kernel device name, not a file: %s\n", devname
);
1708 ent
= mdstat_by_component(devname
);
1711 pr_err("%s does not appear to be a component of any array\n", devname
);
1714 if (sysfs_init(&mdi
, -1, ent
->devnm
)) {
1715 pr_err("unable to initialize sysfs for: %s\n", devname
);
1718 mdfd
= open_dev_excl(ent
->devnm
);
1721 if (sysfs_get_str(&mdi
, NULL
, "array_state",
1722 buf
, sizeof(buf
)) > 0) {
1723 if (strncmp(buf
, "active", 6) == 0 ||
1724 strncmp(buf
, "clean", 5) == 0)
1725 sysfs_set_str(&mdi
, NULL
,
1726 "array_state", "read-auto");
1729 mdfd
= open_dev(ent
->devnm
);
1732 pr_err("Cannot open array %s!!\n", ent
->devnm
);
1738 struct map_ent
*map
= NULL
, *me
;
1739 me
= map_by_devnm(&map
, ent
->devnm
);
1741 policy_save_path(id_path
, me
);
1745 memset(&devlist
, 0, sizeof(devlist
));
1746 devlist
.devname
= devname
;
1747 devlist
.disposition
= 'f';
1748 /* for a container, we must fail each member array */
1749 if (ent
->metadata_version
&&
1750 strncmp(ent
->metadata_version
, "external:", 9) == 0) {
1751 struct mdstat_ent
*mdstat
= mdstat_read(0, 0);
1752 struct mdstat_ent
*memb
;
1753 for (memb
= mdstat
; memb
; memb
= memb
->next
)
1754 if (is_container_member(memb
, ent
->devnm
)) {
1755 int subfd
= open_dev(memb
->devnm
);
1757 rv
|= Manage_subdevs(
1759 &devlist
, verbose
, 0,
1764 free_mdstat(mdstat
);
1766 rv
|= Manage_subdevs(ent
->devnm
, mdfd
, &devlist
,
1767 verbose
, 0, NULL
, 0);
1769 /* Failed due to EBUSY, try to stop the array.
1770 * Give udisks a chance to unmount it first.
1772 int devid
= devnm2devid(ent
->devnm
);
1773 run_udisks("--unmount", map_dev(major(devid
),minor(devid
), 0));
1774 rv
= Manage_stop(ent
->devnm
, mdfd
, verbose
, 1);
1776 /* At least we can try to trigger a 'remove' */
1777 sysfs_uevent(&mdi
, "remove");
1780 pr_err("Fail to stop %s too.\n", ent
->devnm
);
1783 devlist
.disposition
= 'r';
1784 rv
= Manage_subdevs(ent
->devnm
, mdfd
, &devlist
,
1785 verbose
, 0, NULL
, 0);