]>
git.ipfire.org Git - thirdparty/mdadm.git/blob - Manage.c
2 * mdadm - manage Linux "md" devices aka RAID arrays.
4 * Copyright (C) 2001-2013 Neil Brown <neilb@suse.de>
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.
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.
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
22 * Email: <neilb@suse.de>
30 #define REGISTER_DEV _IO (MD_MAJOR, 1)
31 #define START_MD _IO (MD_MAJOR, 2)
32 #define STOP_MD _IO (MD_MAJOR, 3)
34 int Manage_ro(char *devname
, int fd
, int readonly
)
36 /* switch to readonly or rw
39 * first check that array is runing
40 * use RESTART_ARRAY_RW or STOP_ARRAY_RO
43 mdu_array_info_t array
;
47 /* If this is an externally-managed array, we need to modify the
48 * metadata_version so that mdmon doesn't undo our change.
50 mdi
= sysfs_read(fd
, NULL
, GET_LEVEL
|GET_VERSION
);
52 mdi
->array
.major_version
== -1 &&
53 is_subarray(mdi
->text_version
)) {
55 strcpy(vers
, "external:");
56 strcat(vers
, mdi
->text_version
);
59 /* We set readonly ourselves. */
61 sysfs_set_str(mdi
, NULL
, "metadata_version", vers
);
64 rv
= sysfs_set_str(mdi
, NULL
, "array_state", "readonly");
67 pr_err("failed to set readonly for %s: %s\n",
68 devname
, strerror(errno
));
70 vers
[9] = mdi
->text_version
[0];
71 sysfs_set_str(mdi
, NULL
, "metadata_version", vers
);
77 /* We cannot set read/write - must signal mdmon */
79 sysfs_set_str(mdi
, NULL
, "metadata_version", vers
);
81 cp
= strchr(vers
+10, '/');
84 ping_monitor(vers
+10);
85 if (mdi
->array
.level
<= 0)
86 sysfs_set_str(mdi
, NULL
, "array_state", "active");
91 if (md_get_array_info(fd
, &array
)) {
92 pr_err("%s does not appear to be active.\n",
99 if (ioctl(fd
, STOP_ARRAY_RO
, NULL
)) {
100 pr_err("failed to set readonly for %s: %s\n",
101 devname
, strerror(errno
));
105 } else if (readonly
< 0) {
106 if (ioctl(fd
, RESTART_ARRAY_RW
, NULL
)) {
107 pr_err("failed to set writable for %s: %s\n",
108 devname
, strerror(errno
));
118 static void remove_devices(char *devnm
, char *path
)
121 * Remove names at 'path' - possibly with
122 * partition suffixes - which link to the 'standard'
123 * name for devnm. These were probably created
124 * by mdadm when the array was assembled.
137 sprintf(base
, "/dev/%s", devnm
);
138 be
= base
+ strlen(base
);
140 path2
= xmalloc(strlen(path
)+20);
142 pe
= path2
+ strlen(path2
);
144 for (part
= 0; part
< 16; part
++) {
146 sprintf(be
, "p%d", part
);
149 sprintf(pe
, "p%d", part
);
151 sprintf(pe
, "%d", part
);
153 n
= readlink(path2
, link
, sizeof(link
));
154 if (n
> 0 && (int)strlen(base
) == n
&&
155 strncmp(link
, base
, n
) == 0)
161 int Manage_run(char *devname
, int fd
, struct context
*c
)
163 /* Run the array. Array must already be configured
170 pr_err("Cannot find %s in sysfs!!\n", devname
);
174 return IncrementalScan(c
, nm
);
177 int Manage_stop(char *devname
, int fd
, int verbose
, int will_retry
)
179 /* Stop the array. Array must already be configured
180 * 'will_retry' means that error messages are not wanted.
183 struct map_ent
*map
= NULL
;
190 unsigned long long rd1
, rd2
;
192 if (will_retry
&& verbose
== 0)
195 strcpy(devnm
, fd2devnm(fd
));
196 /* Get EXCL access first. If this fails, then attempting
197 * to stop is probably a bad idea.
199 mdi
= sysfs_read(fd
, NULL
, GET_LEVEL
|GET_COMPONENT
|GET_VERSION
);
200 if (mdi
&& is_subarray(mdi
->text_version
)) {
202 strncpy(container
, mdi
->text_version
+1, sizeof(container
));
203 container
[sizeof(container
)-1] = 0;
204 sl
= strchr(container
, '/');
211 while (((fd
= ((devname
[0] == '/')
212 ?open(devname
, O_RDONLY
|O_EXCL
)
213 :open_dev_flags(devnm
, O_RDONLY
|O_EXCL
))) < 0
214 || strcmp(fd2devnm(fd
), devnm
) != 0)
216 && mdmon_running(container
)
218 /* Can't open, so something might be wrong. However it
219 * is a container, so we might be racing with mdmon, so
224 flush_mdmon(container
);
227 if (fd
< 0 || strcmp(fd2devnm(fd
), devnm
) != 0) {
231 pr_err("Cannot get exclusive access to %s:Perhaps a running process, mounted filesystem or active volume group?\n",
235 /* If this is an mdmon managed array, just write 'inactive'
236 * to the array state and let mdmon clear up.
239 mdi
->array
.level
> 0 &&
240 is_subarray(mdi
->text_version
)) {
242 /* This is mdmon managed. */
245 /* As we had an O_EXCL open, any use of the device
246 * which blocks STOP_ARRAY is probably a transient use,
247 * so it is reasonable to retry for a while - 5 seconds.
251 (err
= sysfs_set_str(mdi
, NULL
,
260 pr_err("failed to stop array %s: %s\n",
261 devname
, strerror(errno
));
266 /* Give monitor a chance to act */
267 ping_monitor(mdi
->text_version
);
269 fd
= open_dev_excl(devnm
);
272 pr_err("failed to completely stop %s: Device is busy\n",
278 mdi
->array
.major_version
== -1 &&
279 mdi
->array
.minor_version
== -2 &&
280 !is_subarray(mdi
->text_version
)) {
281 struct mdstat_ent
*mds
, *m
;
282 /* container, possibly mdmon-managed.
283 * Make sure mdmon isn't opening it, which
284 * would interfere with the 'stop'
286 ping_monitor(mdi
->sys_name
);
288 /* now check that there are no existing arrays
289 * which are members of this array
291 mds
= mdstat_read(0, 0);
292 for (m
= mds
; m
; m
= m
->next
)
293 if (m
->metadata_version
&&
294 strncmp(m
->metadata_version
, "external:", 9)==0 &&
295 metadata_container_matches(m
->metadata_version
+9,
298 pr_err("Cannot stop container %s: member %s still active\n",
306 /* If the array is undergoing a reshape which changes the number
307 * of devices, then it would be nice to stop it at a point where
308 * it has completed a full number of stripes in both old and
309 * new layouts as this will allow the reshape to be reverted.
310 * So if 'sync_action' is "reshape" and 'raid_disks' shows two
311 * different numbers, then
313 * - set sync_max to next multiple of both data_disks and
314 * chunk sizes (or next but one)
316 * - wait on 'sync_completed' for that point to be reached.
318 if (mdi
&& (mdi
->array
.level
>= 4 && mdi
->array
.level
<= 6) &&
319 sysfs_attribute_available(mdi
, NULL
, "sync_action") &&
320 sysfs_attribute_available(mdi
, NULL
, "reshape_direction") &&
321 sysfs_get_str(mdi
, NULL
, "sync_action", buf
, 20) > 0 &&
322 strcmp(buf
, "reshape\n") == 0 &&
323 sysfs_get_two(mdi
, NULL
, "raid_disks", &rd1
, &rd2
) == 2) {
324 unsigned long long position
, curr
;
325 unsigned long long chunk1
, chunk2
;
326 unsigned long long rddiv
, chunkdiv
;
327 unsigned long long sectors
;
328 unsigned long long sync_max
, old_sync_max
;
329 unsigned long long completed
;
335 while (rd1
> rd2
&& delay
> 0 &&
336 sysfs_get_ll(mdi
, NULL
, "sync_max", &old_sync_max
) == 0) {
337 /* must be in the critical section - wait a bit */
342 if (sysfs_set_str(mdi
, NULL
, "sync_action", "frozen") != 0)
344 /* Array is frozen */
346 rd1
-= mdi
->array
.level
== 6 ? 2 : 1;
347 rd2
-= mdi
->array
.level
== 6 ? 2 : 1;
348 sysfs_get_str(mdi
, NULL
, "reshape_direction", buf
, sizeof(buf
));
349 if (strncmp(buf
, "back", 4) == 0)
351 if (sysfs_get_ll(mdi
, NULL
, "reshape_position", &position
) != 0) {
352 /* reshape must have finished now */
353 sysfs_set_str(mdi
, NULL
, "sync_action", "idle");
356 sysfs_get_two(mdi
, NULL
, "chunk_size", &chunk1
, &chunk2
);
359 rddiv
= GCD(rd1
, rd2
);
360 chunkdiv
= GCD(chunk1
, chunk2
);
361 sectors
= (chunk1
/chunkdiv
) * chunk2
* (rd1
/rddiv
) * rd2
;
364 /* Need to subtract 'reshape_position' from
365 * array size to get equivalent of sync_max.
366 * Size calculation based on raid5_size in kernel.
368 unsigned long long size
= mdi
->component_size
;
371 /* rd1 must be smaller */
372 /* Reshape may have progressed further backwards than
373 * recorded, so target even further back (hence "-1")
375 position
= (position
/ sectors
- 1) * sectors
;
376 /* rd1 is always the conversion factor between 'sync'
377 * position and 'reshape' position.
378 * We read 1 "new" stripe worth of data from where-ever,
379 * and when write out that full stripe.
381 sync_max
= size
- position
/rd1
;
383 /* Reshape will very likely be beyond position, and it may
384 * be too late to stop at '+1', so aim for '+2'
386 position
= (position
/ sectors
+ 2) * sectors
;
387 sync_max
= position
/rd1
;
389 if (sysfs_get_ll(mdi
, NULL
, "sync_max", &old_sync_max
) < 0)
390 old_sync_max
= mdi
->component_size
;
391 /* Must not advance sync_max as that could confuse
392 * the reshape monitor */
393 if (sync_max
< old_sync_max
)
394 sysfs_set_num(mdi
, NULL
, "sync_max", sync_max
);
395 sysfs_set_str(mdi
, NULL
, "sync_action", "idle");
397 /* That should have set things going again. Now we
398 * wait a little while (3 second max) for sync_completed
399 * to reach the target.
400 * The reshape process can block for 500msec if
401 * the sync speed limit is hit, so we need to wait
402 * a lot longer than that. 1 second is usually
406 scfd
= sysfs_open(mdi
->sys_name
, NULL
, "sync_completed");
407 while (scfd
>= 0 && delay
> 0 && old_sync_max
> 0) {
408 unsigned long long max_completed
;
409 sysfs_get_ll(mdi
, NULL
, "reshape_position", &curr
);
410 sysfs_fd_get_str(scfd
, buf
, sizeof(buf
));
411 if (strncmp(buf
, "none", 4) == 0) {
412 /* Either reshape has aborted, or hasn't
413 * quite started yet. Wait a bit and
414 * check 'sync_action' to see.
417 sysfs_get_str(mdi
, NULL
, "sync_action", buf
, sizeof(buf
));
418 if (strncmp(buf
, "reshape", 7) != 0)
422 if (sysfs_fd_get_two(scfd
, &completed
,
423 &max_completed
) == 2 &&
424 /* 'completed' sometimes reads as max-uulong */
425 completed
< max_completed
&&
426 (completed
> sync_max
||
427 (completed
== sync_max
&& curr
!= position
))) {
428 while (completed
> sync_max
) {
429 sync_max
+= sectors
/ rd1
;
435 if (sync_max
< old_sync_max
)
436 sysfs_set_num(mdi
, NULL
, "sync_max", sync_max
);
439 if (!backwards
&& curr
>= position
)
441 if (backwards
&& curr
<= position
)
443 sysfs_wait(scfd
, &delay
);
451 /* As we have an O_EXCL open, any use of the device
452 * which blocks STOP_ARRAY is probably a transient use,
453 * so it is reasonable to retry for a while - 5 seconds.
456 while (count
&& fd
>= 0
457 && (err
= ioctl(fd
, STOP_ARRAY
, NULL
)) < 0
462 if (fd
>= 0 && err
) {
464 pr_err("failed to stop array %s: %s\n",
465 devname
, strerror(errno
));
467 cont_err("Perhaps a running process, mounted filesystem or active volume group?\n");
473 if (get_linux_version() < 2006028) {
474 /* prior to 2.6.28, KOBJ_CHANGE was not sent when an md array
475 * was stopped, so We'll do it here just to be sure. Drop any
476 * partitions as well...
479 ioctl(fd
, BLKRRPART
, 0);
481 sysfs_uevent(mdi
, "change");
484 if (devnm
[0] && use_udev()) {
485 struct map_ent
*mp
= map_by_devnm(&map
, devnm
);
486 remove_devices(devnm
, mp
? mp
->path
: NULL
);
490 pr_err("stopped %s\n", devname
);
492 map_remove(&map
, devnm
);
500 static struct mddev_dev
*add_one(struct mddev_dev
*dv
, char *name
, char disp
)
502 struct mddev_dev
*new;
503 new = xmalloc(sizeof(*new));
504 memset(new, 0, sizeof(*new));
505 new->devname
= xstrdup(name
);
506 new->disposition
= disp
;
507 new->next
= dv
->next
;
512 static void add_faulty(struct mddev_dev
*dv
, int fd
, char disp
)
514 mdu_array_info_t array
;
515 mdu_disk_info_t disk
;
519 if (md_get_array_info(fd
, &array
) != 0)
522 remaining_disks
= array
.nr_disks
;
523 for (i
= 0; i
< MAX_DISKS
&& remaining_disks
> 0; i
++) {
526 if (md_get_disk_info(fd
, &disk
) != 0)
528 if (disk
.major
== 0 && disk
.minor
== 0)
531 if ((disk
.state
& 1) == 0) /* not faulty */
533 sprintf(buf
, "%d:%d", disk
.major
, disk
.minor
);
534 dv
= add_one(dv
, buf
, disp
);
538 static void add_detached(struct mddev_dev
*dv
, int fd
, char disp
)
540 mdu_array_info_t array
;
541 mdu_disk_info_t disk
;
545 if (md_get_array_info(fd
, &array
) != 0)
548 remaining_disks
= array
.nr_disks
;
549 for (i
= 0; i
< MAX_DISKS
&& remaining_disks
> 0; i
++) {
553 if (md_get_disk_info(fd
, &disk
) != 0)
555 if (disk
.major
== 0 && disk
.minor
== 0)
558 if (disp
== 'f' && (disk
.state
& 1) != 0) /* already faulty */
560 sprintf(buf
, "%d:%d", disk
.major
, disk
.minor
);
561 sfd
= dev_open(buf
, O_RDONLY
);
568 /* Probably not detached */
570 dv
= add_one(dv
, buf
, disp
);
574 static void add_set(struct mddev_dev
*dv
, int fd
, char set_char
)
576 mdu_array_info_t array
;
577 mdu_disk_info_t disk
;
582 if (md_get_array_info(fd
, &array
) != 0)
584 if (array
.level
!= 10)
586 copies
= ((array
.layout
& 0xff) *
587 ((array
.layout
>> 8) & 0xff));
588 if (array
.raid_disks
% copies
)
591 remaining_disks
= array
.nr_disks
;
592 for (i
= 0; i
< MAX_DISKS
&& remaining_disks
> 0; i
++) {
595 if (md_get_disk_info(fd
, &disk
) != 0)
597 if (disk
.major
== 0 && disk
.minor
== 0)
600 set
= disk
.raid_disk
% copies
;
601 if (set_char
!= set
+ 'A')
603 sprintf(buf
, "%d:%d", disk
.major
, disk
.minor
);
604 dv
= add_one(dv
, buf
, dv
->disposition
);
608 int attempt_re_add(int fd
, int tfd
, struct mddev_dev
*dv
,
609 struct supertype
*dev_st
, struct supertype
*tst
,
611 char *update
, char *devname
, int verbose
,
612 mdu_array_info_t
*array
)
618 dev_st
->ss
->getinfo_super(dev_st
, &mdi
, NULL
);
619 dev_st
->ss
->uuid_from_super(dev_st
, ouuid
);
621 tst
->ss
->uuid_from_super(tst
, duuid
);
623 /* Assume uuid matches: kernel will check */
624 memcpy(duuid
, ouuid
, sizeof(ouuid
));
625 if ((mdi
.disk
.state
& (1<<MD_DISK_ACTIVE
)) &&
626 !(mdi
.disk
.state
& (1<<MD_DISK_FAULTY
)) &&
627 memcmp(duuid
, ouuid
, sizeof(ouuid
))==0) {
628 /* Looks like it is worth a
629 * try. Need to make sure
630 * kernel will accept it
633 mdu_disk_info_t disc
;
634 /* re-add doesn't work for version-1 superblocks
637 if (array
->major_version
== 1 &&
638 get_linux_version() <= 2006018)
640 disc
.number
= mdi
.disk
.number
;
641 if (md_get_disk_info(fd
, &disc
) != 0 ||
642 disc
.major
!= 0 || disc
.minor
!= 0)
644 disc
.major
= major(rdev
);
645 disc
.minor
= minor(rdev
);
646 disc
.number
= mdi
.disk
.number
;
647 disc
.raid_disk
= mdi
.disk
.raid_disk
;
648 disc
.state
= mdi
.disk
.state
;
649 if (array
->state
& (1 << MD_SB_CLUSTERED
)) {
650 /* extra flags are needed when adding to a cluster as
651 * there are two cases to distinguish
653 if (dv
->disposition
== 'c')
654 disc
.state
|= (1 << MD_DISK_CANDIDATE
);
656 disc
.state
|= (1 << MD_DISK_CLUSTER_ADD
);
658 if (dv
->writemostly
== FlagSet
)
659 disc
.state
|= 1 << MD_DISK_WRITEMOSTLY
;
660 if (dv
->writemostly
== FlagClear
)
661 disc
.state
&= ~(1 << MD_DISK_WRITEMOSTLY
);
662 if (dv
->failfast
== FlagSet
)
663 disc
.state
|= 1 << MD_DISK_FAILFAST
;
664 if (dv
->failfast
== FlagClear
)
665 disc
.state
&= ~(1 << MD_DISK_FAILFAST
);
666 remove_partitions(tfd
);
667 if (update
|| dv
->writemostly
!= FlagDefault
668 || dv
->failfast
!= FlagDefault
) {
670 tfd
= dev_open(dv
->devname
, O_RDWR
);
672 pr_err("failed to open %s for superblock update during re-add\n", dv
->devname
);
676 if (dv
->writemostly
== FlagSet
)
677 rv
= dev_st
->ss
->update_super(
678 dev_st
, NULL
, "writemostly",
679 devname
, verbose
, 0, NULL
);
680 if (dv
->writemostly
== FlagClear
)
681 rv
= dev_st
->ss
->update_super(
682 dev_st
, NULL
, "readwrite",
683 devname
, verbose
, 0, NULL
);
684 if (dv
->failfast
== FlagSet
)
685 rv
= dev_st
->ss
->update_super(
686 dev_st
, NULL
, "failfast",
687 devname
, verbose
, 0, NULL
);
688 if (dv
->failfast
== FlagClear
)
689 rv
= dev_st
->ss
->update_super(
690 dev_st
, NULL
, "nofailfast",
691 devname
, verbose
, 0, NULL
);
693 rv
= dev_st
->ss
->update_super(
694 dev_st
, NULL
, update
,
695 devname
, verbose
, 0, NULL
);
697 rv
= dev_st
->ss
->store_super(dev_st
, tfd
);
700 pr_err("failed to update superblock during re-add\n");
704 /* don't even try if disk is marked as faulty */
706 if (ioctl(fd
, ADD_NEW_DISK
, &disc
) == 0) {
708 pr_err("re-added %s\n", dv
->devname
);
711 if (errno
== ENOMEM
|| errno
== EROFS
) {
712 pr_err("add new device failed for %s: %s\n",
713 dv
->devname
, strerror(errno
));
714 if (dv
->disposition
== 'M')
723 int Manage_add(int fd
, int tfd
, struct mddev_dev
*dv
,
724 struct supertype
*tst
, mdu_array_info_t
*array
,
725 int force
, int verbose
, char *devname
,
726 char *update
, unsigned long rdev
, unsigned long long array_size
,
729 unsigned long long ldsize
;
730 struct supertype
*dev_st
;
732 mdu_disk_info_t disc
;
734 if (!get_dev_size(tfd
, dv
->devname
, &ldsize
)) {
735 if (dv
->disposition
== 'M')
741 if (tst
->ss
== &super0
&& ldsize
> 4ULL*1024*1024*1024*1024) {
742 /* More than 4TB is wasted on v0.90 */
744 pr_err("%s is larger than %s can effectively use.\n"
745 " Add --force is you really want to add this device.\n",
746 dv
->devname
, devname
);
749 pr_err("%s is larger than %s can effectively use.\n"
750 " Adding anyway as --force was given.\n",
751 dv
->devname
, devname
);
753 if (!tst
->ss
->external
&& array
->major_version
== 0) {
754 if (ioctl(fd
, HOT_ADD_DISK
, rdev
)==0) {
756 pr_err("hot added %s\n",
761 pr_err("hot add failed for %s: %s\n",
762 dv
->devname
, strerror(errno
));
766 if (array
->not_persistent
== 0 || tst
->ss
->external
) {
768 /* need to find a sample superblock to copy, and
769 * a spare slot to use.
770 * For 'external' array (well, container based),
771 * We can just load the metadata for the array->
775 /* already loaded */;
776 else if (tst
->ss
->external
) {
777 tst
->ss
->load_container(tst
, fd
, NULL
);
778 } else for (j
= 0; j
< tst
->max_devs
; j
++) {
782 if (md_get_disk_info(fd
, &disc
))
784 if (disc
.major
==0 && disc
.minor
==0)
786 if ((disc
.state
& 4)==0) /* sync */
788 /* Looks like a good device to try */
789 dev
= map_dev(disc
.major
, disc
.minor
, 1);
792 dfd
= dev_open(dev
, O_RDONLY
);
795 if (tst
->ss
->load_super(tst
, dfd
,
803 /* FIXME this is a bad test to be using */
804 if (!tst
->sb
&& (dv
->disposition
!= 'a'
805 && dv
->disposition
!= 'S')) {
806 /* we are re-adding a device to a
807 * completely dead array - have to depend
810 } else if (!tst
->sb
) {
811 pr_err("cannot load array metadata from %s\n", devname
);
815 /* Make sure device is large enough */
816 if (dv
->disposition
!= 'j' && /* skip size check for Journal */
818 tst
->ss
->avail_size(tst
, ldsize
/512, INVALID_SECTORS
) <
820 if (dv
->disposition
== 'M')
822 pr_err("%s not large enough to join array\n",
827 /* Possibly this device was recently part of
828 * the array and was temporarily removed, and
829 * is now being re-added. If so, we can
833 if (array
->not_persistent
== 0) {
834 dev_st
= dup_super(tst
);
835 dev_st
->ss
->load_super(dev_st
, tfd
, NULL
);
836 if (dev_st
->sb
&& dv
->disposition
!= 'S') {
839 rv
= attempt_re_add(fd
, tfd
, dv
, dev_st
, tst
,
840 rdev
, update
, devname
,
842 dev_st
->ss
->free_super(dev_st
);
847 if (dv
->disposition
== 'M') {
849 pr_err("--re-add for %s to %s is not possible\n",
850 dv
->devname
, devname
);
853 if (dv
->disposition
== 'A') {
854 pr_err("--re-add for %s to %s is not possible\n",
855 dv
->devname
, devname
);
858 if (array
->active_disks
< array
->raid_disks
) {
859 char *avail
= xcalloc(array
->raid_disks
, 1);
863 for (d
= 0; d
< MAX_DISKS
&& found
< array
->nr_disks
; d
++) {
865 if (md_get_disk_info(fd
, &disc
))
867 if (disc
.major
== 0 && disc
.minor
== 0)
869 if (!(disc
.state
& (1<<MD_DISK_SYNC
)))
871 avail
[disc
.raid_disk
] = 1;
874 array_failed
= !enough(array
->level
, array
->raid_disks
,
875 array
->layout
, 1, avail
);
880 pr_err("%s has failed so using --add cannot work and might destroy\n",
882 pr_err("data on %s. You should stop the array and re-assemble it.\n",
887 /* non-persistent. Must ensure that new drive
888 * is at least array->size big.
890 if (ldsize
/512 < array_size
) {
891 pr_err("%s not large enough to join array\n",
896 /* committed to really trying this device now*/
897 remove_partitions(tfd
);
899 /* in 2.6.17 and earlier, version-1 superblocks won't
900 * use the number we write, but will choose a free number.
901 * we must choose the same free number, which requires
902 * starting at 'raid_disks' and counting up
904 for (j
= array
->raid_disks
; j
< tst
->max_devs
; j
++) {
906 if (md_get_disk_info(fd
, &disc
))
908 if (disc
.major
==0 && disc
.minor
==0)
910 if (disc
.state
& 8) /* removed */
913 disc
.major
= major(rdev
);
914 disc
.minor
= minor(rdev
);
918 disc
.number
= raid_slot
;
921 /* only add journal to array that supports journaling */
922 if (dv
->disposition
== 'j') {
926 mdp
= sysfs_read(fd
, NULL
, GET_ARRAY_STATE
);
928 pr_err("%s unable to read array state.\n", devname
);
932 if (strncmp(mdp
->sysfs_array_state
, "readonly", 8) != 0) {
934 pr_err("%s is not readonly, cannot add journal.\n", devname
);
940 tst
->ss
->getinfo_super(tst
, &mdi
, NULL
);
941 if (mdi
.journal_device_required
== 0) {
942 pr_err("%s does not support journal device.\n", devname
);
948 if (array
->not_persistent
==0) {
950 if (dv
->disposition
== 'j')
951 disc
.state
|= (1 << MD_DISK_JOURNAL
) | (1 << MD_DISK_SYNC
);
952 if (dv
->writemostly
== FlagSet
)
953 disc
.state
|= 1 << MD_DISK_WRITEMOSTLY
;
954 if (dv
->failfast
== FlagSet
)
955 disc
.state
|= 1 << MD_DISK_FAILFAST
;
956 dfd
= dev_open(dv
->devname
, O_RDWR
| O_EXCL
|O_DIRECT
);
957 if (tst
->ss
->add_to_super(tst
, &disc
, dfd
,
958 dv
->devname
, INVALID_SECTORS
))
960 if (tst
->ss
->write_init_super(tst
))
962 } else if (dv
->disposition
== 'A') {
963 /* this had better be raid1.
964 * As we are "--re-add"ing we must find a spare slot
967 char *used
= xcalloc(array
->raid_disks
, 1);
968 for (j
= 0; j
< tst
->max_devs
; j
++) {
969 mdu_disk_info_t disc2
;
971 if (md_get_disk_info(fd
, &disc2
))
973 if (disc2
.major
==0 && disc2
.minor
==0)
975 if (disc2
.state
& 8) /* removed */
977 if (disc2
.raid_disk
< 0)
979 if (disc2
.raid_disk
> array
->raid_disks
)
981 used
[disc2
.raid_disk
] = 1;
983 for (j
= 0 ; j
< array
->raid_disks
; j
++)
986 disc
.state
|= (1<<MD_DISK_SYNC
);
992 if (array
->state
& (1 << MD_SB_CLUSTERED
)) {
993 if (dv
->disposition
== 'c')
994 disc
.state
|= (1 << MD_DISK_CANDIDATE
);
996 disc
.state
|= (1 << MD_DISK_CLUSTER_ADD
);
999 if (dv
->writemostly
== FlagSet
)
1000 disc
.state
|= (1 << MD_DISK_WRITEMOSTLY
);
1001 if (dv
->failfast
== FlagSet
)
1002 disc
.state
|= (1 << MD_DISK_FAILFAST
);
1003 if (tst
->ss
->external
) {
1005 * to an external metadata container */
1006 struct mdinfo new_mdi
;
1012 strcpy(devnm
, fd2devnm(fd
));
1014 container_fd
= open_dev_excl(devnm
);
1015 if (container_fd
< 0) {
1016 pr_err("add failed for %s: could not get exclusive access to container\n",
1018 tst
->ss
->free_super(tst
);
1022 Kill(dv
->devname
, NULL
, 0, -1, 0);
1023 dfd
= dev_open(dv
->devname
, O_RDWR
| O_EXCL
|O_DIRECT
);
1024 if (mdmon_running(tst
->container_devnm
))
1025 tst
->update_tail
= &tst
->updates
;
1026 if (tst
->ss
->add_to_super(tst
, &disc
, dfd
,
1027 dv
->devname
, INVALID_SECTORS
)) {
1029 close(container_fd
);
1032 if (tst
->update_tail
)
1033 flush_metadata_updates(tst
);
1035 tst
->ss
->sync_metadata(tst
);
1037 sra
= sysfs_read(container_fd
, NULL
, 0);
1039 pr_err("add failed for %s: sysfs_read failed\n",
1041 close(container_fd
);
1042 tst
->ss
->free_super(tst
);
1045 sra
->array
.level
= LEVEL_CONTAINER
;
1046 /* Need to set data_offset and component_size */
1047 tst
->ss
->getinfo_super(tst
, &new_mdi
, NULL
);
1048 new_mdi
.disk
.major
= disc
.major
;
1049 new_mdi
.disk
.minor
= disc
.minor
;
1050 new_mdi
.recovery_start
= 0;
1051 /* Make sure fds are closed as they are O_EXCL which
1052 * would block add_disk */
1053 tst
->ss
->free_super(tst
);
1054 if (sysfs_add_disk(sra
, &new_mdi
, 0) != 0) {
1055 pr_err("add new device to external metadata failed for %s\n", dv
->devname
);
1056 close(container_fd
);
1060 ping_monitor(devnm
);
1062 close(container_fd
);
1064 tst
->ss
->free_super(tst
);
1065 if (ioctl(fd
, ADD_NEW_DISK
, &disc
)) {
1066 if (dv
->disposition
== 'j')
1067 pr_err("Failed to hot add %s as journal, "
1068 "please try restart %s.\n", dv
->devname
, devname
);
1070 pr_err("add new device failed for %s as %d: %s\n",
1071 dv
->devname
, j
, strerror(errno
));
1074 if (dv
->disposition
== 'j') {
1075 pr_err("Journal added successfully, making %s read-write\n", devname
);
1076 if (Manage_ro(devname
, fd
, -1))
1077 pr_err("Failed to make %s read-write\n", devname
);
1082 pr_err("added %s\n", dv
->devname
);
1086 int Manage_remove(struct supertype
*tst
, int fd
, struct mddev_dev
*dv
,
1087 int sysfd
, unsigned long rdev
, int force
, int verbose
, char *devname
)
1092 if (tst
->ss
->external
) {
1093 /* To remove a device from a container, we must
1094 * check that it isn't in use in an array.
1095 * This involves looking in the 'holders'
1096 * directory - there must be just one entry,
1098 * To ensure that it doesn't get used as a
1099 * hot spare while we are checking, we
1100 * get an O_EXCL open on the container
1104 strcpy(devnm
, fd2devnm(fd
));
1105 lfd
= open_dev_excl(devnm
);
1107 pr_err("Cannot get exclusive access to container - odd\n");
1110 /* We may not be able to check on holders in
1111 * sysfs, either because we don't have the dev num
1112 * (rdev == 0) or because the device has been detached
1113 * and the 'holders' directory no longer exists
1114 * (ret == -1). In that case, assume it is OK to
1121 * The drive has already been set to 'faulty', however
1122 * monitor might not have had time to process it and the
1123 * drive might still have an entry in the 'holders'
1124 * directory. Try a few times to avoid a false error
1129 ret
= sysfs_unique_holder(devnm
, rdev
);
1132 usleep(100 * 1000); /* 100ms */
1133 } while (--count
> 0);
1136 pr_err("%s is not a member, cannot remove.\n",
1142 pr_err("%s is still in use, cannot remove.\n",
1149 /* FIXME check that it is a current member */
1151 /* device has been removed and we don't know
1152 * the major:minor number
1154 err
= sys_hot_remove_disk(sysfd
, force
);
1156 err
= hot_remove_disk(fd
, rdev
, force
);
1157 if (err
&& errno
== ENODEV
) {
1158 /* Old kernels rejected this if no personality
1160 struct mdinfo
*sra
= sysfs_read(fd
, NULL
, GET_DEVS
);
1161 struct mdinfo
*dv
= NULL
;
1164 for ( ; dv
; dv
=dv
->next
)
1165 if (dv
->disk
.major
== (int)major(rdev
) &&
1166 dv
->disk
.minor
== (int)minor(rdev
))
1169 err
= sysfs_set_str(sra
, dv
,
1177 pr_err("hot remove failed for %s: %s\n", dv
->devname
,
1183 if (tst
->ss
->external
) {
1185 * Before dropping our exclusive open we make an
1186 * attempt at preventing mdmon from seeing an
1187 * 'add' event before reconciling this 'remove'
1190 char *devnm
= fd2devnm(fd
);
1193 pr_err("unable to get container name\n");
1197 ping_manager(devnm
);
1202 pr_err("hot removed %s from %s\n",
1203 dv
->devname
, devname
);
1207 int Manage_replace(struct supertype
*tst
, int fd
, struct mddev_dev
*dv
,
1208 unsigned long rdev
, int verbose
, char *devname
)
1210 struct mdinfo
*mdi
, *di
;
1211 if (tst
->ss
->external
) {
1212 pr_err("--replace only supported for native metadata (0.90 or 1.x)\n");
1215 /* Need to find the device in sysfs and add 'want_replacement' to the
1218 mdi
= sysfs_read(fd
, NULL
, GET_DEVS
);
1219 if (!mdi
|| !mdi
->devs
) {
1220 pr_err("Cannot find status of %s to enable replacement - strange\n",
1224 for (di
= mdi
->devs
; di
; di
= di
->next
)
1225 if (di
->disk
.major
== (int)major(rdev
) &&
1226 di
->disk
.minor
== (int)minor(rdev
))
1230 if (di
->disk
.raid_disk
< 0) {
1231 pr_err("%s is not active and so cannot be replaced.\n",
1236 rv
= sysfs_set_str(mdi
, di
,
1237 "state", "want_replacement");
1240 pr_err("Failed to request replacement for %s\n",
1245 pr_err("Marked %s (device %d in %s) for replacement\n",
1246 dv
->devname
, di
->disk
.raid_disk
, devname
);
1247 /* If there is a matching 'with', we need to tell it which
1250 while (dv
&& dv
->disposition
!= 'W')
1253 dv
->disposition
= 'w';
1254 dv
->used
= di
->disk
.raid_disk
;
1259 pr_err("%s not found in %s so cannot --replace it\n",
1260 dv
->devname
, devname
);
1264 int Manage_with(struct supertype
*tst
, int fd
, struct mddev_dev
*dv
,
1265 unsigned long rdev
, int verbose
, char *devname
)
1267 struct mdinfo
*mdi
, *di
;
1268 /* try to set 'slot' for 'rdev' in 'fd' to 'dv->used' */
1269 mdi
= sysfs_read(fd
, NULL
, GET_DEVS
|GET_STATE
);
1270 if (!mdi
|| !mdi
->devs
) {
1271 pr_err("Cannot find status of %s to enable replacement - strange\n",
1275 for (di
= mdi
->devs
; di
; di
= di
->next
)
1276 if (di
->disk
.major
== (int)major(rdev
) &&
1277 di
->disk
.minor
== (int)minor(rdev
))
1281 if (di
->disk
.state
& (1<<MD_DISK_FAULTY
)) {
1282 pr_err("%s is faulty and cannot be a replacement\n",
1287 if (di
->disk
.raid_disk
>= 0) {
1288 pr_err("%s is active and cannot be a replacement\n",
1293 rv
= sysfs_set_num(mdi
, di
,
1297 pr_err("Failed to set %s as preferred replacement.\n",
1302 pr_err("Marked %s in %s as replacement for device %d\n",
1303 dv
->devname
, devname
, dv
->used
);
1307 pr_err("%s not found in %s so cannot make it preferred replacement\n",
1308 dv
->devname
, devname
);
1312 int Manage_subdevs(char *devname
, int fd
,
1313 struct mddev_dev
*devlist
, int verbose
, int test
,
1314 char *update
, int force
)
1316 /* Do something to each dev.
1318 * 'a' - add the device
1320 * If that fails EINVAL, try ADD_NEW_DISK
1321 * 'S' - add the device as a spare - don't try re-add
1322 * 'j' - add the device as a journal device
1323 * 'A' - re-add the device
1324 * 'r' - remove the device: HOT_REMOVE_DISK
1325 * device can be 'faulty' or 'detached' in which case all
1326 * matching devices are removed.
1327 * 'f' - set the device faulty SET_DISK_FAULTY
1328 * device can be 'detached' in which case any device that
1329 * is inaccessible will be marked faulty.
1330 * 'R' - mark this device as wanting replacement.
1331 * 'W' - this device is added if necessary and activated as
1332 * a replacement for a previous 'R' device.
1334 * 'w' - 'W' will be changed to 'w' when it is paired with
1335 * a 'R' device. If a 'W' is found while walking the list
1336 * it must be unpaired, and is an error.
1337 * 'M' - this is created by a 'missing' target. It is a slight
1339 * 'F' - Another variant of 'A', where the device was faulty
1340 * so must be removed from the array first.
1341 * 'c' - confirm the device as found (for clustered environments)
1343 * For 'f' and 'r', the device can also be a kernel-internal
1344 * name such as 'sdb'.
1346 mdu_array_info_t array
;
1347 unsigned long long array_size
;
1348 struct mddev_dev
*dv
;
1350 struct supertype
*tst
;
1351 char *subarray
= NULL
;
1353 int count
= 0; /* number of actions taken */
1355 struct mdinfo devinfo
;
1360 if (sysfs_init(&info
, fd
, NULL
)) {
1361 pr_err("sysfs not availabile for %s\n", devname
);
1365 if (md_get_array_info(fd
, &array
)) {
1366 pr_err("Cannot get array info for %s\n", devname
);
1369 /* array.size is only 32 bits and may be truncated.
1370 * So read from sysfs if possible, and record number of sectors
1373 array_size
= get_component_size(fd
);
1374 if (array_size
<= 0)
1375 array_size
= array
.size
* 2;
1377 tst
= super_by_fd(fd
, &subarray
);
1379 pr_err("unsupport array - version %d.%d\n",
1380 array
.major_version
, array
.minor_version
);
1384 for (dv
= devlist
; dv
; dv
= dv
->next
) {
1385 unsigned long rdev
= 0; /* device to add/remove etc */
1390 if (dv
->disposition
== 'c') {
1391 rv
= parse_cluster_confirm_arg(dv
->devname
,
1395 pr_err("Could not get the devname of cluster\n");
1400 if (strcmp(dv
->devname
, "failed") == 0 ||
1401 strcmp(dv
->devname
, "faulty") == 0) {
1402 if (dv
->disposition
!= 'A'
1403 && dv
->disposition
!= 'r') {
1404 pr_err("%s only meaningful with -r or --re-add, not -%c\n",
1405 dv
->devname
, dv
->disposition
);
1408 add_faulty(dv
, fd
, (dv
->disposition
== 'A'
1412 if (strcmp(dv
->devname
, "detached") == 0) {
1413 if (dv
->disposition
!= 'r' && dv
->disposition
!= 'f') {
1414 pr_err("%s only meaningful with -r of -f, not -%c\n",
1415 dv
->devname
, dv
->disposition
);
1418 add_detached(dv
, fd
, dv
->disposition
);
1422 if (strcmp(dv
->devname
, "missing") == 0) {
1423 struct mddev_dev
*add_devlist
;
1424 struct mddev_dev
**dp
;
1425 if (dv
->disposition
== 'c') {
1426 rv
= ioctl(fd
, CLUSTERED_DISK_NACK
, NULL
);
1430 if (dv
->disposition
!= 'A') {
1431 pr_err("'missing' only meaningful with --re-add\n");
1434 add_devlist
= conf_get_devs();
1435 if (add_devlist
== NULL
) {
1436 pr_err("no devices to scan for missing members.");
1439 for (dp
= &add_devlist
; *dp
; dp
= & (*dp
)->next
)
1440 /* 'M' (for 'missing') is like 'A' without errors */
1441 (*dp
)->disposition
= 'M';
1443 dv
->next
= add_devlist
;
1447 if (strncmp(dv
->devname
, "set-", 4) == 0 &&
1448 strlen(dv
->devname
) == 5) {
1451 if (dv
->disposition
!= 'r' &&
1452 dv
->disposition
!= 'f') {
1453 pr_err("'%s' only meaningful with -r or -f\n",
1457 if (array
.level
!= 10) {
1458 pr_err("'%s' only meaningful with RAID10 arrays\n",
1462 copies
= ((array
.layout
& 0xff) *
1463 ((array
.layout
>> 8) & 0xff));
1464 if (array
.raid_disks
% copies
!= 0 ||
1465 dv
->devname
[4] < 'A' ||
1466 dv
->devname
[4] >= 'A' + copies
||
1468 pr_err("'%s' not meaningful with this array\n",
1472 add_set(dv
, fd
, dv
->devname
[4]);
1476 if (strchr(dv
->devname
, '/') == NULL
&&
1477 strchr(dv
->devname
, ':') == NULL
&&
1478 strlen(dv
->devname
) < 50) {
1479 /* Assume this is a kernel-internal name like 'sda1' */
1482 if (dv
->disposition
!= 'r' && dv
->disposition
!= 'f') {
1483 pr_err("%s only meaningful with -r or -f, not -%c\n",
1484 dv
->devname
, dv
->disposition
);
1488 sprintf(dname
, "dev-%s", dv
->devname
);
1489 sysfd
= sysfs_open(fd2devnm(fd
), dname
, "block/dev");
1492 if (sysfs_fd_get_str(sysfd
, dn
, 20) > 0 &&
1493 sscanf(dn
, "%d:%d", &mj
,&mn
) == 2) {
1494 rdev
= makedev(mj
,mn
);
1501 sysfd
= sysfs_open(fd2devnm(fd
), dname
, "state");
1503 pr_err("%s does not appear to be a component of %s\n",
1504 dv
->devname
, devname
);
1508 } else if ((dv
->disposition
== 'r' || dv
->disposition
== 'f')
1509 && get_maj_min(dv
->devname
, &mj
, &mn
)) {
1510 /* for 'fail' and 'remove', the device might
1513 rdev
= makedev(mj
, mn
);
1516 tfd
= dev_open(dv
->devname
, O_RDONLY
);
1521 int open_err
= errno
;
1522 if (stat(dv
->devname
, &stb
) != 0) {
1523 pr_err("Cannot find %s: %s\n",
1524 dv
->devname
, strerror(errno
));
1527 if ((stb
.st_mode
& S_IFMT
) != S_IFBLK
) {
1528 if (dv
->disposition
== 'M')
1529 /* non-fatal. Also improbable */
1531 pr_err("%s is not a block device.\n",
1535 if (dv
->disposition
== 'r')
1536 /* Be happy, the stat worked, that is
1537 * enough for --remove
1541 if (dv
->disposition
== 'M')
1544 pr_err("Cannot open %s: %s\n",
1545 dv
->devname
, strerror(open_err
));
1551 switch(dv
->disposition
){
1553 pr_err("internal error - devmode[%s]=%d\n",
1554 dv
->devname
, dv
->disposition
);
1557 case 'S': /* --add-spare */
1558 case 'j': /* --add-journal */
1560 case 'M': /* --re-add missing */
1561 case 'F': /* --re-add faulty */
1562 case 'c': /* --cluster-confirm */
1563 /* add the device */
1565 pr_err("Cannot add disks to a \'member\' array, perform this operation on the parent container\n");
1569 /* Let's first try to write re-add to sysfs */
1571 (dv
->disposition
== 'A' || dv
->disposition
== 'F')) {
1572 sysfs_init_dev(&devinfo
, rdev
);
1573 if (sysfs_set_str(&info
, &devinfo
, "state", "re-add") == 0) {
1574 pr_err("re-add %s to %s succeed\n",
1575 dv
->devname
, info
.sys_name
);
1580 if (dv
->disposition
== 'F')
1581 /* Need to remove first */
1582 hot_remove_disk(fd
, rdev
, force
);
1583 /* Make sure it isn't in use (in 2.6 or later) */
1584 tfd
= dev_open(dv
->devname
, O_RDONLY
|O_EXCL
);
1586 /* We know no-one else is using it. We'll
1587 * need non-exclusive access to add it, so
1591 tfd
= dev_open(dv
->devname
, O_RDONLY
);
1594 if (dv
->disposition
== 'M')
1596 pr_err("Cannot open %s: %s\n",
1597 dv
->devname
, strerror(errno
));
1601 if (sysfs_freeze_array(&info
) == 1)
1606 rv
= Manage_add(fd
, tfd
, dv
, tst
, &array
,
1607 force
, verbose
, devname
, update
,
1608 rdev
, array_size
, raid_slot
);
1620 pr_err("Cannot remove disks from a \'member\' array, perform this operation on the parent container\n");
1623 rv
= Manage_remove(tst
, fd
, dv
, sysfd
,
1624 rdev
, verbose
, force
,
1635 case 'f': /* set faulty */
1636 /* FIXME check current member */
1637 if ((sysfd
>= 0 && write(sysfd
, "faulty", 6) != 6) ||
1638 (sysfd
< 0 && ioctl(fd
, SET_DISK_FAULTY
,
1642 pr_err("set device faulty failed for %s: %s\n",
1643 dv
->devname
, strerror(errno
));
1653 pr_err("set %s faulty in %s\n",
1654 dv
->devname
, devname
);
1656 case 'R': /* Mark as replaceable */
1658 pr_err("Cannot replace disks in a \'member\' array, perform this operation on the parent container\n");
1662 if (sysfs_freeze_array(&info
) == 1)
1667 rv
= Manage_replace(tst
, fd
, dv
,
1676 case 'W': /* --with device that doesn't match */
1677 pr_err("No matching --replace device for --with %s\n",
1680 case 'w': /* --with device which was matched */
1681 rv
= Manage_with(tst
, fd
, dv
,
1682 rdev
, verbose
, devname
);
1689 sysfs_set_str(&info
, NULL
, "sync_action","idle");
1690 if (test
&& count
== 0)
1696 sysfs_set_str(&info
, NULL
, "sync_action","idle");
1697 return !test
&& busy
? 2 : 1;
1700 int autodetect(void)
1702 /* Open any md device, and issue the RAID_AUTORUN ioctl */
1704 int fd
= dev_open("9:0", O_RDONLY
);
1706 if (ioctl(fd
, RAID_AUTORUN
, 0) == 0)
1713 int Update_subarray(char *dev
, char *subarray
, char *update
, struct mddev_ident
*ident
, int verbose
)
1715 struct supertype supertype
, *st
= &supertype
;
1718 memset(st
, 0, sizeof(*st
));
1720 fd
= open_subarray(dev
, subarray
, st
, verbose
< 0);
1724 if (!st
->ss
->update_subarray
) {
1726 pr_err("Operation not supported for %s metadata\n",
1731 if (mdmon_running(st
->devnm
))
1732 st
->update_tail
= &st
->updates
;
1734 rv
= st
->ss
->update_subarray(st
, subarray
, update
, ident
);
1738 pr_err("Failed to update %s of subarray-%s in %s\n",
1739 update
, subarray
, dev
);
1740 } else if (st
->update_tail
)
1741 flush_metadata_updates(st
);
1743 st
->ss
->sync_metadata(st
);
1745 if (rv
== 0 && strcmp(update
, "name") == 0 && verbose
>= 0)
1746 pr_err("Updated subarray-%s name from %s, UUIDs may have changed\n",
1750 st
->ss
->free_super(st
);
1756 /* Move spare from one array to another If adding to destination array fails
1757 * add back to original array.
1758 * Returns 1 on success, 0 on failure */
1759 int move_spare(char *from_devname
, char *to_devname
, dev_t devid
)
1761 struct mddev_dev devlist
;
1764 /* try to remove and add */
1765 int fd1
= open(to_devname
, O_RDONLY
);
1766 int fd2
= open(from_devname
, O_RDONLY
);
1768 if (fd1
< 0 || fd2
< 0) {
1769 if (fd1
>=0) close(fd1
);
1770 if (fd2
>=0) close(fd2
);
1774 devlist
.next
= NULL
;
1776 devlist
.writemostly
= FlagDefault
;
1777 devlist
.failfast
= FlagDefault
;
1778 devlist
.devname
= devname
;
1779 sprintf(devname
, "%d:%d", major(devid
), minor(devid
));
1781 devlist
.disposition
= 'r';
1782 if (Manage_subdevs(from_devname
, fd2
, &devlist
, -1, 0, NULL
, 0) == 0) {
1783 devlist
.disposition
= 'a';
1784 if (Manage_subdevs(to_devname
, fd1
, &devlist
, -1, 0, NULL
, 0) == 0) {
1785 /* make sure manager is aware of changes */
1786 ping_manager(to_devname
);
1787 ping_manager(from_devname
);
1792 else Manage_subdevs(from_devname
, fd2
, &devlist
, -1, 0, NULL
, 0);