]>
git.ipfire.org Git - thirdparty/mdadm.git/blob - Manage.c
2 * mdadm - manage Linux "md" devices aka RAID arrays.
4 * Copyright (C) 2001-2009 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
;
48 if (md_get_version(fd
) < 9000) {
49 fprintf(stderr
, Name
": need md driver version 0.90.0 or later\n");
53 /* If this is an externally-manage array, we need to modify the
54 * metadata_version so that mdmon doesn't undo our change.
56 mdi
= sysfs_read(fd
, -1, GET_LEVEL
|GET_VERSION
);
58 mdi
->array
.major_version
== -1 &&
59 mdi
->array
.level
> 0 &&
60 is_subarray(mdi
->text_version
)) {
62 strcpy(vers
, "external:");
63 strcat(vers
, mdi
->text_version
);
66 /* We set readonly ourselves. */
68 sysfs_set_str(mdi
, NULL
, "metadata_version", vers
);
71 rv
= sysfs_set_str(mdi
, NULL
, "array_state", "readonly");
74 fprintf(stderr
, Name
": failed to set readonly for %s: %s\n",
75 devname
, strerror(errno
));
77 vers
[9] = mdi
->text_version
[0];
78 sysfs_set_str(mdi
, NULL
, "metadata_version", vers
);
83 /* We cannot set read/write - must signal mdmon */
85 sysfs_set_str(mdi
, NULL
, "metadata_version", vers
);
87 cp
= strchr(vers
+10, '/');
90 ping_monitor(vers
+10);
95 if (ioctl(fd
, GET_ARRAY_INFO
, &array
)) {
96 fprintf(stderr
, Name
": %s does not appear to be active.\n",
102 if (ioctl(fd
, STOP_ARRAY_RO
, NULL
)) {
103 fprintf(stderr
, Name
": failed to set readonly for %s: %s\n",
104 devname
, strerror(errno
));
107 } else if (readonly
< 0) {
108 if (ioctl(fd
, RESTART_ARRAY_RW
, NULL
)) {
109 fprintf(stderr
, Name
": failed to set writable for %s: %s\n",
110 devname
, strerror(errno
));
119 static void remove_devices(int devnum
, char *path
)
122 * Remove names at 'path' - possibly with
123 * partition suffixes - which link to the 'standard'
124 * name for devnum. These were probably created
125 * by mdadm when the array was assembled.
139 sprintf(base
, "/dev/md%d", devnum
);
141 sprintf(base
, "/dev/md_d%d", -1-devnum
);
142 be
= base
+ strlen(base
);
144 path2
= malloc(strlen(path
)+20);
146 pe
= path2
+ strlen(path2
);
148 for (part
= 0; part
< 16; part
++) {
150 sprintf(be
, "p%d", part
);
153 sprintf(pe
, "p%d", part
);
155 sprintf(pe
, "%d", part
);
157 n
= readlink(path2
, link
, sizeof(link
));
158 if (n
&& (int)strlen(base
) == n
&&
159 strncmp(link
, base
, n
) == 0)
166 int Manage_runstop(char *devname
, int fd
, int runstop
, int quiet
)
168 /* Run or stop the array. array must already be configured
170 * Only print failure messages if quiet == 0;
171 * quiet > 0 means really be quiet
172 * quiet < 0 means we will try again if it fails.
174 mdu_param_t param
; /* unused */
176 if (runstop
== -1 && md_get_version(fd
) < 9000) {
177 if (ioctl(fd
, STOP_MD
, 0)) {
178 if (quiet
== 0) fprintf(stderr
,
179 Name
": stopping device %s "
181 devname
, strerror(errno
));
186 if (md_get_version(fd
) < 9000) {
187 fprintf(stderr
, Name
": need md driver version 0.90.0 or later\n");
191 if (ioctl(fd, GET_ARRAY_INFO, &array)) {
192 fprintf(stderr, Name ": %s does not appear to be active.\n",
198 if (ioctl(fd
, RUN_ARRAY
, ¶m
)) {
199 fprintf(stderr
, Name
": failed to run array %s: %s\n",
200 devname
, strerror(errno
));
204 fprintf(stderr
, Name
": started %s\n", devname
);
205 } else if (runstop
< 0){
206 struct map_ent
*map
= NULL
;
210 /* If this is an mdmon managed array, just write 'inactive'
211 * to the array state and let mdmon clear up.
213 devnum
= fd2devnum(fd
);
214 mdi
= sysfs_read(fd
, -1, GET_LEVEL
|GET_VERSION
);
216 mdi
->array
.level
> 0 &&
217 is_subarray(mdi
->text_version
)) {
218 /* This is mdmon managed. */
220 if (sysfs_set_str(mdi
, NULL
,
221 "array_state", "inactive") < 0) {
224 ": failed to stop array %s: %s\n",
225 devname
, strerror(errno
));
229 /* Give monitor a chance to act */
230 ping_monitor(mdi
->text_version
);
232 fd
= open(devname
, O_RDONLY
);
234 mdi
->array
.major_version
== -1 &&
235 mdi
->array
.minor_version
== -2 &&
236 !is_subarray(mdi
->text_version
)) {
237 struct mdstat_ent
*mds
, *m
;
238 /* container, possibly mdmon-managed.
239 * Make sure mdmon isn't opening it, which
240 * would interfere with the 'stop'
242 ping_monitor(mdi
->sys_name
);
244 /* now check that there are no existing arrays
245 * which are members of this array
247 mds
= mdstat_read(0, 0);
248 for (m
=mds
; m
; m
=m
->next
)
249 if (m
->metadata_version
&&
250 strncmp(m
->metadata_version
, "external:", 9)==0 &&
251 is_subarray(m
->metadata_version
+9) &&
252 devname2devnum(m
->metadata_version
+10) == devnum
) {
255 ": Cannot stop container %s: "
256 "member %s still active\n",
265 if (fd
>= 0 && ioctl(fd
, STOP_ARRAY
, NULL
)) {
268 ": failed to stop array %s: %s\n",
269 devname
, strerror(errno
));
271 fprintf(stderr
, "Perhaps a running "
272 "process, mounted filesystem "
273 "or active volume group?\n");
279 /* prior to 2.6.28, KOBJ_CHANGE was not sent when an md array
280 * was stopped, so We'll do it here just to be sure. Drop any
281 * partitions as well...
284 ioctl(fd
, BLKRRPART
, 0);
286 sysfs_uevent(mdi
, "change");
289 if (devnum
!= NoMdDev
&&
290 (stat("/dev/.udev", &stb
) != 0 ||
291 check_env("MDADM_NO_UDEV"))) {
292 struct map_ent
*mp
= map_by_devnum(&map
, devnum
);
293 remove_devices(devnum
, mp
? mp
->path
: NULL
);
298 fprintf(stderr
, Name
": stopped %s\n", devname
);
300 map_remove(&map
, devnum
);
306 int Manage_resize(char *devname
, int fd
, long long size
, int raid_disks
)
308 mdu_array_info_t info
;
309 if (ioctl(fd
, GET_ARRAY_INFO
, &info
) != 0) {
310 fprintf(stderr
, Name
": Cannot get array information for %s: %s\n",
311 devname
, strerror(errno
));
317 info
.raid_disks
= raid_disks
;
318 if (ioctl(fd
, SET_ARRAY_INFO
, &info
) != 0) {
319 fprintf(stderr
, Name
": Cannot set device size/shape for %s: %s\n",
320 devname
, strerror(errno
));
326 int Manage_subdevs(char *devname
, int fd
,
327 mddev_dev_t devlist
, int verbose
, int test
)
329 /* do something to each dev.
331 * 'a' - add the device
333 * If that fails EINVAL, try ADD_NEW_DISK
334 * 'r' - remove the device HOT_REMOVE_DISK
335 * device can be 'faulty' or 'detached' in which case all
336 * matching devices are removed.
337 * 'f' - set the device faulty SET_DISK_FAULTY
338 * device can be 'detached' in which case any device that
339 * is inaccessible will be marked faulty.
340 * For 'f' and 'r', the device can also be a kernel-internal
341 * name such as 'sdb'.
343 mddev_dev_t add_devlist
= NULL
;
344 mdu_array_info_t array
;
345 mdu_disk_info_t disc
;
346 unsigned long long array_size
;
347 mddev_dev_t dv
, next
= NULL
;
351 struct supertype
*st
, *tst
;
356 int count
= 0; /* number of actions taken */
358 if (ioctl(fd
, GET_ARRAY_INFO
, &array
)) {
359 fprintf(stderr
, Name
": cannot get array info for %s\n",
364 /* array.size is only 32 bit and may be truncated.
365 * So read from sysfs if possible, and record number of sectors
368 array_size
= get_component_size(fd
);
370 array_size
= array
.size
* 2;
372 tst
= super_by_fd(fd
);
374 fprintf(stderr
, Name
": unsupport array - version %d.%d\n",
375 array
.major_version
, array
.minor_version
);
380 for (dv
= devlist
, j
=0 ; dv
; dv
= next
, j
= jnext
) {
381 unsigned long long ldsize
;
383 char *dnprintable
= dv
->devname
;
384 char *add_dev
= dv
->devname
;
386 int re_add_failed
= 0;
391 if (strcmp(dv
->devname
, "failed")==0 ||
392 strcmp(dv
->devname
, "faulty")==0) {
393 if (dv
->disposition
!= 'r') {
394 fprintf(stderr
, Name
": %s only meaningful "
395 "with -r, not -%c\n",
396 dv
->devname
, dv
->disposition
);
399 for (; j
< array
.raid_disks
+ array
.nr_disks
; j
++) {
402 if (ioctl(fd
, GET_DISK_INFO
, &disc
))
404 if (disc
.major
== 0 && disc
.minor
== 0)
406 if ((disc
.state
& 1) == 0) /* faulty */
408 dev
= makedev(disc
.major
, disc
.minor
);
409 if (stb
.st_rdev
== dev
)
410 /* already did that one */
414 /* same slot again next time - things might
417 sprintf(dvname
,"%d:%d", disc
.major
, disc
.minor
);
418 dnprintable
= dvname
;
423 } else if (strcmp(dv
->devname
, "detached") == 0) {
424 if (dv
->disposition
!= 'r' && dv
->disposition
!= 'f') {
425 fprintf(stderr
, Name
": %s only meaningful "
426 "with -r of -f, not -%c\n",
427 dv
->devname
, dv
->disposition
);
430 for (; j
< array
.raid_disks
+ array
.nr_disks
; j
++) {
434 if (ioctl(fd
, GET_DISK_INFO
, &disc
))
436 if (disc
.major
== 0 && disc
.minor
== 0)
438 sprintf(dvname
,"%d:%d", disc
.major
, disc
.minor
);
439 sfd
= dev_open(dvname
, O_RDONLY
);
444 if (dv
->disposition
== 'f' &&
445 (disc
.state
& 1) == 1) /* already faulty */
449 dev
= makedev(disc
.major
, disc
.minor
);
450 if (stb
.st_rdev
== dev
)
451 /* already did that one */
455 /* same slot again next time - things might
458 dnprintable
= dvname
;
463 } else if (strcmp(dv
->devname
, "missing") == 0) {
464 if (dv
->disposition
!= 'a' || dv
->re_add
== 0) {
465 fprintf(stderr
, Name
": 'missing' only meaningful "
469 if (add_devlist
== NULL
)
470 add_devlist
= conf_get_devs();
471 if (add_devlist
== NULL
) {
472 fprintf(stderr
, Name
": no devices to scan for missing members.");
475 add_dev
= add_devlist
->devname
;
476 add_devlist
= add_devlist
->next
;
477 if (add_devlist
!= NULL
)
479 if (stat(add_dev
, &stb
) < 0)
481 } else if (strchr(dv
->devname
, '/') == NULL
&&
482 strchr(dv
->devname
, ':') == NULL
&&
483 strlen(dv
->devname
) < 50) {
484 /* Assume this is a kernel-internal name like 'sda1' */
487 if (dv
->disposition
!= 'r' && dv
->disposition
!= 'f') {
488 fprintf(stderr
, Name
": %s only meaningful "
489 "with -r or -f, not -%c\n",
490 dv
->devname
, dv
->disposition
);
494 sprintf(dname
, "dev-%s", dv
->devname
);
495 sysfd
= sysfs_open(fd2devnum(fd
), dname
, "block/dev");
499 if (sysfs_fd_get_str(sysfd
, dn
, 20) > 0 &&
500 sscanf(dn
, "%d:%d", &mj
,&mn
) == 2) {
501 stb
.st_rdev
= makedev(mj
,mn
);
508 sysfd
= sysfs_open(fd2devnum(fd
), dname
, "state");
510 fprintf(stderr
, Name
": %s does not appear "
511 "to be a component of %s\n",
512 dv
->devname
, devname
);
519 tfd
= dev_open(dv
->devname
, O_RDONLY
);
520 if (tfd
< 0 && dv
->disposition
== 'r' &&
521 lstat(dv
->devname
, &stb
) == 0)
522 /* Be happy, the lstat worked, that is
523 * enough for --remove
527 if (tfd
< 0 || fstat(tfd
, &stb
) != 0) {
528 fprintf(stderr
, Name
": cannot find %s: %s\n",
529 dv
->devname
, strerror(errno
));
537 if ((stb
.st_mode
& S_IFMT
) != S_IFBLK
) {
538 fprintf(stderr
, Name
": %s is not a "
544 switch(dv
->disposition
){
546 fprintf(stderr
, Name
": internal error - devmode[%s]=%d\n",
547 dv
->devname
, dv
->disposition
);
551 if (tst
->subarray
[0]) {
552 fprintf(stderr
, Name
": Cannot add disks to a"
553 " \'member\' array, perform this"
554 " operation on the parent container\n");
557 /* Make sure it isn't in use (in 2.6 or later) */
558 tfd
= dev_open(add_dev
, O_RDONLY
|O_EXCL
|O_DIRECT
);
559 if (tfd
< 0 && add_dev
!= dv
->devname
)
562 fprintf(stderr
, Name
": Cannot open %s: %s\n",
563 dv
->devname
, strerror(errno
));
569 if (array
.not_persistent
==0)
570 st
->ss
->load_super(st
, tfd
, NULL
);
572 if (add_dev
== dv
->devname
) {
573 if (!get_dev_size(tfd
, dv
->devname
, &ldsize
)) {
577 } else if (!get_dev_size(tfd
, NULL
, &ldsize
)) {
583 if (!tst
->ss
->external
&&
584 array
.major_version
== 0 &&
585 md_get_version(fd
)%100 < 2) {
588 if (ioctl(fd
, HOT_ADD_DISK
,
589 (unsigned long)stb
.st_rdev
)==0) {
591 fprintf(stderr
, Name
": hot added %s\n",
596 fprintf(stderr
, Name
": hot add failed for %s: %s\n",
597 add_dev
, strerror(errno
));
601 if (array
.not_persistent
== 0 || tst
->ss
->external
) {
603 /* need to find a sample superblock to copy, and
604 * a spare slot to use.
605 * For 'external' array (well, container based),
606 * We can just load the metadata for the array.
609 /* already loaded */;
610 else if (tst
->ss
->external
) {
611 tst
->ss
->load_super(tst
, fd
, NULL
);
612 } else for (j
= 0; j
< tst
->max_devs
; j
++) {
616 if (ioctl(fd
, GET_DISK_INFO
, &disc
))
618 if (disc
.major
==0 && disc
.minor
==0)
620 if ((disc
.state
& 4)==0) continue; /* sync */
621 /* Looks like a good device to try */
622 dev
= map_dev(disc
.major
, disc
.minor
, 1);
624 dfd
= dev_open(dev
, O_RDONLY
);
625 if (dfd
< 0) continue;
626 if (tst
->ss
->load_super(tst
, dfd
,
634 /* FIXME this is a bad test to be using */
637 fprintf(stderr
, Name
": cannot find valid superblock in this array - HELP\n");
641 /* Make sure device is large enough */
642 if (tst
->ss
->avail_size(tst
, ldsize
/512) <
646 if (add_dev
!= dv
->devname
)
648 fprintf(stderr
, Name
": %s not large enough to join array\n",
653 /* Possibly this device was recently part of the array
654 * and was temporarily removed, and is now being re-added.
655 * If so, we can simply re-add it.
657 tst
->ss
->uuid_from_super(tst
, duuid
);
659 /* re-add doesn't work for version-1 superblocks
662 if (array
.major_version
== 1 &&
663 get_linux_version() <= 2006018)
667 st
->ss
->getinfo_super(st
, &mdi
);
668 st
->ss
->uuid_from_super(st
, ouuid
);
669 if ((mdi
.disk
.state
& (1<<MD_DISK_ACTIVE
)) &&
670 !(mdi
.disk
.state
& (1<<MD_DISK_FAULTY
)) &&
671 memcmp(duuid
, ouuid
, sizeof(ouuid
))==0) {
672 /* look like it is worth a try. Need to
673 * make sure kernel will accept it though.
675 disc
.number
= mdi
.disk
.number
;
676 if (ioctl(fd
, GET_DISK_INFO
, &disc
) != 0
677 || disc
.major
!= 0 || disc
.minor
!= 0
680 disc
.major
= major(stb
.st_rdev
);
681 disc
.minor
= minor(stb
.st_rdev
);
682 disc
.number
= mdi
.disk
.number
;
683 disc
.raid_disk
= mdi
.disk
.raid_disk
;
684 disc
.state
= mdi
.disk
.state
;
685 if (dv
->writemostly
== 1)
686 disc
.state
|= 1 << MD_DISK_WRITEMOSTLY
;
687 if (dv
->writemostly
== 2)
688 disc
.state
&= ~(1 << MD_DISK_WRITEMOSTLY
);
689 remove_partitions(tfd
);
692 /* don't even try if disk is marked as faulty */
694 if (ioctl(fd
, ADD_NEW_DISK
, &disc
) == 0) {
696 fprintf(stderr
, Name
": re-added %s\n", add_dev
);
700 if (errno
== ENOMEM
|| errno
== EROFS
) {
701 fprintf(stderr
, Name
": add new device failed for %s: %s\n",
702 add_dev
, strerror(errno
));
703 if (add_dev
!= dv
->devname
)
711 if (add_dev
!= dv
->devname
) {
714 ": --re-add for %s to %s is not possible\n",
726 ": --re-add for %s to %s is not possible\n",
727 dv
->devname
, devname
);
731 fprintf(stderr
, Name
": %s reports being an active member for %s, but a --re-add fails.\n",
732 dv
->devname
, devname
);
733 fprintf(stderr
, Name
": not performing --add as that would convert %s in to a spare.\n",
735 fprintf(stderr
, Name
": To make this a spare, use \"mdadm --zero-superblock %s\" first.\n",
742 /* non-persistent. Must ensure that new drive
743 * is at least array.size big.
745 if (ldsize
/512 < array_size
) {
746 fprintf(stderr
, Name
": %s not large enough to join array\n",
753 /* committed to really trying this device now*/
755 remove_partitions(tfd
);
759 /* in 2.6.17 and earlier, version-1 superblocks won't
760 * use the number we write, but will choose a free number.
761 * we must choose the same free number, which requires
762 * starting at 'raid_disks' and counting up
764 for (j
= array
.raid_disks
; j
< tst
->max_devs
; j
++) {
766 if (ioctl(fd
, GET_DISK_INFO
, &disc
))
768 if (disc
.major
==0 && disc
.minor
==0)
770 if (disc
.state
& 8) /* removed */
773 disc
.major
= major(stb
.st_rdev
);
774 disc
.minor
= minor(stb
.st_rdev
);
777 if (array
.not_persistent
==0 || tst
->ss
->external
) {
779 if (dv
->writemostly
== 1)
780 disc
.state
|= 1 << MD_DISK_WRITEMOSTLY
;
781 dfd
= dev_open(dv
->devname
, O_RDWR
| O_EXCL
|O_DIRECT
);
782 if (tst
->ss
->add_to_super(tst
, &disc
, dfd
,
787 /* write_init_super will close 'dfd' */
788 if (tst
->ss
->external
)
789 /* mdmon will write the metadata */
791 else if (tst
->ss
->write_init_super(tst
))
793 } else if (dv
->re_add
) {
794 /* this had better be raid1.
795 * As we are "--re-add"ing we must find a spare slot
798 char *used
= malloc(array
.raid_disks
);
799 memset(used
, 0, array
.raid_disks
);
800 for (j
=0; j
< tst
->max_devs
; j
++) {
801 mdu_disk_info_t disc2
;
803 if (ioctl(fd
, GET_DISK_INFO
, &disc2
))
805 if (disc2
.major
==0 && disc2
.minor
==0)
807 if (disc2
.state
& 8) /* removed */
809 if (disc2
.raid_disk
< 0)
811 if (disc2
.raid_disk
> array
.raid_disks
)
813 used
[disc2
.raid_disk
] = 1;
815 for (j
=0 ; j
<array
.raid_disks
; j
++)
818 disc
.state
|= (1<<MD_DISK_SYNC
);
823 if (dv
->writemostly
== 1)
824 disc
.state
|= (1 << MD_DISK_WRITEMOSTLY
);
825 if (tst
->ss
->external
) {
826 /* add a disk to an external metadata container
827 * only if mdmon is around to see it
829 struct mdinfo new_mdi
;
832 int devnum
= fd2devnum(fd
);
834 container_fd
= open_dev_excl(devnum
);
835 if (container_fd
< 0) {
836 fprintf(stderr
, Name
": add failed for %s:"
837 " could not get exclusive access to container\n",
842 if (!mdmon_running(devnum
)) {
843 fprintf(stderr
, Name
": add failed for %s: mdmon not running\n",
849 sra
= sysfs_read(container_fd
, -1, 0);
851 fprintf(stderr
, Name
": add failed for %s: sysfs_read failed\n",
856 sra
->array
.level
= LEVEL_CONTAINER
;
857 /* Need to set data_offset and component_size */
858 tst
->ss
->getinfo_super(tst
, &new_mdi
);
859 new_mdi
.disk
.major
= disc
.major
;
860 new_mdi
.disk
.minor
= disc
.minor
;
861 new_mdi
.recovery_start
= 0;
862 if (sysfs_add_disk(sra
, &new_mdi
, 0) != 0) {
863 fprintf(stderr
, Name
": add new device to external metadata"
864 " failed for %s\n", dv
->devname
);
868 ping_monitor(devnum2devname(devnum
));
871 } else if (ioctl(fd
, ADD_NEW_DISK
, &disc
)) {
872 fprintf(stderr
, Name
": add new device failed for %s as %d: %s\n",
873 dv
->devname
, j
, strerror(errno
));
877 fprintf(stderr
, Name
": added %s\n", dv
->devname
);
882 if (tst
->subarray
[0]) {
883 fprintf(stderr
, Name
": Cannot remove disks from a"
884 " \'member\' array, perform this"
885 " operation on the parent container\n");
890 if (tst
->ss
->external
) {
891 /* To remove a device from a container, we must
892 * check that it isn't in use in an array.
893 * This involves looking in the 'holders'
894 * directory - there must be just one entry,
896 * To ensure that it doesn't get used as a
897 * hold spare while we are checking, we
898 * get an O_EXCL open on the container
900 int dnum
= fd2devnum(fd
);
901 lfd
= open_dev_excl(dnum
);
904 ": Cannot get exclusive access "
905 " to container - odd\n");
910 /* in the detached case it is not possible to
911 * check if we are the unique holder, so just
912 * rely on the 'detached' checks
914 if (strcmp(dv
->devname
, "detached") == 0 ||
916 sysfs_unique_holder(dnum
, stb
.st_rdev
))
920 ": %s is %s, cannot remove.\n",
922 errno
== EEXIST
? "still in use":
928 /* FIXME check that it is a current member */
930 /* device has been removed and we don't know
931 * the major:minor number
933 int n
= write(sysfd
, "remove", 6);
941 err
= ioctl(fd
, HOT_REMOVE_DISK
, (unsigned long)stb
.st_rdev
);
942 if (err
&& errno
== ENODEV
) {
943 /* Old kernels rejected this if no personality
945 struct mdinfo
*sra
= sysfs_read(fd
, 0, GET_DEVS
);
946 struct mdinfo
*dv
= NULL
;
949 for ( ; dv
; dv
=dv
->next
)
950 if (dv
->disk
.major
== (int)major(stb
.st_rdev
) &&
951 dv
->disk
.minor
== (int)minor(stb
.st_rdev
))
954 err
= sysfs_set_str(sra
, dv
,
963 fprintf(stderr
, Name
": hot remove failed "
964 "for %s: %s\n", dnprintable
,
970 if (tst
->ss
->external
) {
972 * Before dropping our exclusive open we make an
973 * attempt at preventing mdmon from seeing an
974 * 'add' event before reconciling this 'remove'
977 char *name
= devnum2devname(fd2devnum(fd
));
980 fprintf(stderr
, Name
": unable to get container name\n");
991 fprintf(stderr
, Name
": hot removed %s from %s\n",
992 dnprintable
, devname
);
995 case 'f': /* set faulty */
996 /* FIXME check current member */
997 if ((sysfd
>= 0 && write(sysfd
, "faulty", 6) != 6) ||
998 (sysfd
< 0 && ioctl(fd
, SET_DISK_FAULTY
,
999 (unsigned long) stb
.st_rdev
))) {
1000 fprintf(stderr
, Name
": set device faulty failed for %s: %s\n",
1001 dnprintable
, strerror(errno
));
1011 fprintf(stderr
, Name
": set %s faulty in %s\n",
1012 dnprintable
, devname
);
1016 if (test
&& count
== 0)
1021 int autodetect(void)
1023 /* Open any md device, and issue the RAID_AUTORUN ioctl */
1025 int fd
= dev_open("9:0", O_RDONLY
);
1027 if (ioctl(fd
, RAID_AUTORUN
, 0) == 0)
1034 int Update_subarray(char *dev
, char *subarray
, char *update
, mddev_ident_t ident
, int quiet
)
1036 struct supertype supertype
, *st
= &supertype
;
1039 memset(st
, 0, sizeof(*st
));
1040 if (snprintf(st
->subarray
, sizeof(st
->subarray
), "%s", subarray
) >=
1041 (signed)sizeof(st
->subarray
)) {
1044 Name
": Input overflow for subarray '%s' > %zu bytes\n",
1045 subarray
, sizeof(st
->subarray
) - 1);
1049 fd
= open_subarray(dev
, st
, quiet
);
1053 if (!st
->ss
->update_subarray
) {
1056 Name
": Operation not supported for %s metadata\n",
1061 if (mdmon_running(st
->devnum
))
1062 st
->update_tail
= &st
->updates
;
1064 rv
= st
->ss
->update_subarray(st
, update
, ident
);
1068 fprintf(stderr
, Name
": Failed to update %s of subarray-%s in %s\n",
1069 update
, subarray
, dev
);
1070 } else if (st
->update_tail
)
1071 flush_metadata_updates(st
);
1073 st
->ss
->sync_metadata(st
);
1075 if (rv
== 0 && strcmp(update
, "name") == 0 && !quiet
)
1077 Name
": Updated subarray-%s name from %s, UUIDs may have changed\n",
1081 st
->ss
->free_super(st
);