]>
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 is_subarray(mdi
->text_version
)) {
61 strcpy(vers
, "external:");
62 strcat(vers
, mdi
->text_version
);
65 /* We set readonly ourselves. */
67 sysfs_set_str(mdi
, NULL
, "metadata_version", vers
);
70 rv
= sysfs_set_str(mdi
, NULL
, "array_state", "readonly");
73 fprintf(stderr
, Name
": failed to set readonly for %s: %s\n",
74 devname
, strerror(errno
));
76 vers
[9] = mdi
->text_version
[0];
77 sysfs_set_str(mdi
, NULL
, "metadata_version", vers
);
82 /* We cannot set read/write - must signal mdmon */
84 sysfs_set_str(mdi
, NULL
, "metadata_version", vers
);
86 cp
= strchr(vers
+10, '/');
89 ping_monitor(vers
+10);
90 if (mdi
->array
.level
<= 0)
91 sysfs_set_str(mdi
, NULL
, "array_state", "active");
96 if (ioctl(fd
, GET_ARRAY_INFO
, &array
)) {
97 fprintf(stderr
, Name
": %s does not appear to be active.\n",
103 if (ioctl(fd
, STOP_ARRAY_RO
, NULL
)) {
104 fprintf(stderr
, Name
": failed to set readonly for %s: %s\n",
105 devname
, strerror(errno
));
108 } else if (readonly
< 0) {
109 if (ioctl(fd
, RESTART_ARRAY_RW
, NULL
)) {
110 fprintf(stderr
, Name
": failed to set writable for %s: %s\n",
111 devname
, strerror(errno
));
120 static void remove_devices(int devnum
, char *path
)
123 * Remove names at 'path' - possibly with
124 * partition suffixes - which link to the 'standard'
125 * name for devnum. These were probably created
126 * by mdadm when the array was assembled.
140 sprintf(base
, "/dev/md%d", devnum
);
142 sprintf(base
, "/dev/md_d%d", -1-devnum
);
143 be
= base
+ strlen(base
);
145 path2
= malloc(strlen(path
)+20);
147 pe
= path2
+ strlen(path2
);
149 for (part
= 0; part
< 16; part
++) {
151 sprintf(be
, "p%d", part
);
154 sprintf(pe
, "p%d", part
);
156 sprintf(pe
, "%d", part
);
158 n
= readlink(path2
, link
, sizeof(link
));
159 if (n
&& (int)strlen(base
) == n
&&
160 strncmp(link
, base
, n
) == 0)
167 int Manage_runstop(char *devname
, int fd
, int runstop
, int quiet
)
169 /* Run or stop the array. array must already be configured
171 * Only print failure messages if quiet == 0;
172 * quiet > 0 means really be quiet
173 * quiet < 0 means we will try again if it fails.
175 mdu_param_t param
; /* unused */
177 if (runstop
== -1 && md_get_version(fd
) < 9000) {
178 if (ioctl(fd
, STOP_MD
, 0)) {
179 if (quiet
== 0) fprintf(stderr
,
180 Name
": stopping device %s "
182 devname
, strerror(errno
));
187 if (md_get_version(fd
) < 9000) {
188 fprintf(stderr
, Name
": need md driver version 0.90.0 or later\n");
192 if (ioctl(fd, GET_ARRAY_INFO, &array)) {
193 fprintf(stderr, Name ": %s does not appear to be active.\n",
199 if (ioctl(fd
, RUN_ARRAY
, ¶m
)) {
200 fprintf(stderr
, Name
": failed to run array %s: %s\n",
201 devname
, strerror(errno
));
205 fprintf(stderr
, Name
": started %s\n", devname
);
206 } else if (runstop
< 0){
207 struct map_ent
*map
= NULL
;
211 /* If this is an mdmon managed array, just write 'inactive'
212 * to the array state and let mdmon clear up.
214 devnum
= fd2devnum(fd
);
215 mdi
= sysfs_read(fd
, -1, GET_LEVEL
|GET_VERSION
);
217 mdi
->array
.level
> 0 &&
218 is_subarray(mdi
->text_version
)) {
219 /* This is mdmon managed. */
221 if (sysfs_set_str(mdi
, NULL
,
222 "array_state", "inactive") < 0) {
225 ": failed to stop array %s: %s\n",
226 devname
, strerror(errno
));
230 /* Give monitor a chance to act */
231 ping_monitor(mdi
->text_version
);
233 fd
= open(devname
, O_RDONLY
);
235 mdi
->array
.major_version
== -1 &&
236 mdi
->array
.minor_version
== -2 &&
237 !is_subarray(mdi
->text_version
)) {
238 struct mdstat_ent
*mds
, *m
;
239 /* container, possibly mdmon-managed.
240 * Make sure mdmon isn't opening it, which
241 * would interfere with the 'stop'
243 ping_monitor(mdi
->sys_name
);
245 /* now check that there are no existing arrays
246 * which are members of this array
248 mds
= mdstat_read(0, 0);
249 for (m
=mds
; m
; m
=m
->next
)
250 if (m
->metadata_version
&&
251 strncmp(m
->metadata_version
, "external:", 9)==0 &&
252 is_subarray(m
->metadata_version
+9) &&
253 devname2devnum(m
->metadata_version
+10) == devnum
) {
256 ": Cannot stop container %s: "
257 "member %s still active\n",
266 if (fd
>= 0 && ioctl(fd
, STOP_ARRAY
, NULL
)) {
269 ": failed to stop array %s: %s\n",
270 devname
, strerror(errno
));
272 fprintf(stderr
, "Perhaps a running "
273 "process, mounted filesystem "
274 "or active volume group?\n");
280 /* prior to 2.6.28, KOBJ_CHANGE was not sent when an md array
281 * was stopped, so We'll do it here just to be sure. Drop any
282 * partitions as well...
285 ioctl(fd
, BLKRRPART
, 0);
287 sysfs_uevent(mdi
, "change");
290 if (devnum
!= NoMdDev
&&
291 (stat("/dev/.udev", &stb
) != 0 ||
292 check_env("MDADM_NO_UDEV"))) {
293 struct map_ent
*mp
= map_by_devnum(&map
, devnum
);
294 remove_devices(devnum
, mp
? mp
->path
: NULL
);
299 fprintf(stderr
, Name
": stopped %s\n", devname
);
301 map_remove(&map
, devnum
);
307 int Manage_resize(char *devname
, int fd
, long long size
, int raid_disks
)
309 mdu_array_info_t info
;
310 if (ioctl(fd
, GET_ARRAY_INFO
, &info
) != 0) {
311 fprintf(stderr
, Name
": Cannot get array information for %s: %s\n",
312 devname
, strerror(errno
));
318 info
.raid_disks
= raid_disks
;
319 if (ioctl(fd
, SET_ARRAY_INFO
, &info
) != 0) {
320 fprintf(stderr
, Name
": Cannot set device size/shape for %s: %s\n",
321 devname
, strerror(errno
));
327 int Manage_subdevs(char *devname
, int fd
,
328 struct mddev_dev
*devlist
, int verbose
, int test
)
330 /* do something to each dev.
332 * 'a' - add the device
334 * If that fails EINVAL, try ADD_NEW_DISK
335 * 'r' - remove the device HOT_REMOVE_DISK
336 * device can be 'faulty' or 'detached' in which case all
337 * matching devices are removed.
338 * 'f' - set the device faulty SET_DISK_FAULTY
339 * device can be 'detached' in which case any device that
340 * is inaccessible will be marked faulty.
341 * For 'f' and 'r', the device can also be a kernel-internal
342 * name such as 'sdb'.
344 struct mddev_dev
*add_devlist
= NULL
;
345 mdu_array_info_t array
;
346 mdu_disk_info_t disc
;
347 unsigned long long array_size
;
348 struct mddev_dev
*dv
, *next
= NULL
;
352 struct supertype
*st
, *tst
;
353 char *subarray
= NULL
;
358 int count
= 0; /* number of actions taken */
360 if (ioctl(fd
, GET_ARRAY_INFO
, &array
)) {
361 fprintf(stderr
, Name
": cannot get array info for %s\n",
366 /* array.size is only 32 bit and may be truncated.
367 * So read from sysfs if possible, and record number of sectors
370 array_size
= get_component_size(fd
);
372 array_size
= array
.size
* 2;
374 tst
= super_by_fd(fd
, &subarray
);
376 fprintf(stderr
, Name
": unsupport array - version %d.%d\n",
377 array
.major_version
, array
.minor_version
);
382 for (dv
= devlist
, j
=0 ; dv
; dv
= next
, j
= jnext
) {
383 unsigned long long ldsize
;
385 char *dnprintable
= dv
->devname
;
386 char *add_dev
= dv
->devname
;
388 int re_add_failed
= 0;
393 if (strcmp(dv
->devname
, "failed")==0 ||
394 strcmp(dv
->devname
, "faulty")==0) {
395 if (dv
->disposition
!= 'r') {
396 fprintf(stderr
, Name
": %s only meaningful "
397 "with -r, not -%c\n",
398 dv
->devname
, dv
->disposition
);
401 for (; j
< array
.raid_disks
+ array
.nr_disks
; j
++) {
404 if (ioctl(fd
, GET_DISK_INFO
, &disc
))
406 if (disc
.major
== 0 && disc
.minor
== 0)
408 if ((disc
.state
& 1) == 0) /* faulty */
410 dev
= makedev(disc
.major
, disc
.minor
);
411 if (stb
.st_rdev
== dev
)
412 /* already did that one */
416 /* same slot again next time - things might
419 sprintf(dvname
,"%d:%d", disc
.major
, disc
.minor
);
420 dnprintable
= dvname
;
425 } else if (strcmp(dv
->devname
, "detached") == 0) {
426 if (dv
->disposition
!= 'r' && dv
->disposition
!= 'f') {
427 fprintf(stderr
, Name
": %s only meaningful "
428 "with -r of -f, not -%c\n",
429 dv
->devname
, dv
->disposition
);
432 for (; j
< array
.raid_disks
+ array
.nr_disks
; j
++) {
436 if (ioctl(fd
, GET_DISK_INFO
, &disc
))
438 if (disc
.major
== 0 && disc
.minor
== 0)
440 sprintf(dvname
,"%d:%d", disc
.major
, disc
.minor
);
441 sfd
= dev_open(dvname
, O_RDONLY
);
446 if (dv
->disposition
== 'f' &&
447 (disc
.state
& 1) == 1) /* already faulty */
451 dev
= makedev(disc
.major
, disc
.minor
);
452 if (stb
.st_rdev
== dev
)
453 /* already did that one */
457 /* same slot again next time - things might
460 dnprintable
= dvname
;
465 } else if (strcmp(dv
->devname
, "missing") == 0) {
466 if (dv
->disposition
!= 'a' || dv
->re_add
== 0) {
467 fprintf(stderr
, Name
": 'missing' only meaningful "
471 if (add_devlist
== NULL
)
472 add_devlist
= conf_get_devs();
473 if (add_devlist
== NULL
) {
474 fprintf(stderr
, Name
": no devices to scan for missing members.");
477 add_dev
= add_devlist
->devname
;
478 add_devlist
= add_devlist
->next
;
479 if (add_devlist
!= NULL
)
481 if (stat(add_dev
, &stb
) < 0)
483 } else if (strchr(dv
->devname
, '/') == NULL
&&
484 strchr(dv
->devname
, ':') == NULL
&&
485 strlen(dv
->devname
) < 50) {
486 /* Assume this is a kernel-internal name like 'sda1' */
489 if (dv
->disposition
!= 'r' && dv
->disposition
!= 'f') {
490 fprintf(stderr
, Name
": %s only meaningful "
491 "with -r or -f, not -%c\n",
492 dv
->devname
, dv
->disposition
);
496 sprintf(dname
, "dev-%s", dv
->devname
);
497 sysfd
= sysfs_open(fd2devnum(fd
), dname
, "block/dev");
501 if (sysfs_fd_get_str(sysfd
, dn
, 20) > 0 &&
502 sscanf(dn
, "%d:%d", &mj
,&mn
) == 2) {
503 stb
.st_rdev
= makedev(mj
,mn
);
510 sysfd
= sysfs_open(fd2devnum(fd
), dname
, "state");
512 fprintf(stderr
, Name
": %s does not appear "
513 "to be a component of %s\n",
514 dv
->devname
, devname
);
521 tfd
= dev_open(dv
->devname
, O_RDONLY
);
522 if (tfd
< 0 && dv
->disposition
== 'r' &&
523 lstat(dv
->devname
, &stb
) == 0)
524 /* Be happy, the lstat worked, that is
525 * enough for --remove
529 if (tfd
< 0 || fstat(tfd
, &stb
) != 0) {
530 fprintf(stderr
, Name
": cannot find %s: %s\n",
531 dv
->devname
, strerror(errno
));
539 if ((stb
.st_mode
& S_IFMT
) != S_IFBLK
) {
540 fprintf(stderr
, Name
": %s is not a "
546 switch(dv
->disposition
){
548 fprintf(stderr
, Name
": internal error - devmode[%s]=%d\n",
549 dv
->devname
, dv
->disposition
);
554 fprintf(stderr
, Name
": Cannot add disks to a"
555 " \'member\' array, perform this"
556 " operation on the parent container\n");
559 /* Make sure it isn't in use (in 2.6 or later) */
560 tfd
= dev_open(add_dev
, O_RDONLY
|O_EXCL
|O_DIRECT
);
561 if (tfd
< 0 && add_dev
!= dv
->devname
)
564 fprintf(stderr
, Name
": Cannot open %s: %s\n",
565 dv
->devname
, strerror(errno
));
571 if (array
.not_persistent
==0)
572 st
->ss
->load_super(st
, tfd
, NULL
);
574 if (add_dev
== dv
->devname
) {
575 if (!get_dev_size(tfd
, dv
->devname
, &ldsize
)) {
579 } else if (!get_dev_size(tfd
, NULL
, &ldsize
)) {
585 if (!tst
->ss
->external
&&
586 array
.major_version
== 0 &&
587 md_get_version(fd
)%100 < 2) {
590 if (ioctl(fd
, HOT_ADD_DISK
,
591 (unsigned long)stb
.st_rdev
)==0) {
593 fprintf(stderr
, Name
": hot added %s\n",
598 fprintf(stderr
, Name
": hot add failed for %s: %s\n",
599 add_dev
, strerror(errno
));
603 if (array
.not_persistent
== 0 || tst
->ss
->external
) {
605 /* need to find a sample superblock to copy, and
606 * a spare slot to use.
607 * For 'external' array (well, container based),
608 * We can just load the metadata for the array.
611 /* already loaded */;
612 else if (tst
->ss
->external
) {
613 tst
->ss
->load_container(tst
, fd
, NULL
);
614 } else for (j
= 0; j
< tst
->max_devs
; j
++) {
618 if (ioctl(fd
, GET_DISK_INFO
, &disc
))
620 if (disc
.major
==0 && disc
.minor
==0)
622 if ((disc
.state
& 4)==0) continue; /* sync */
623 /* Looks like a good device to try */
624 dev
= map_dev(disc
.major
, disc
.minor
, 1);
626 dfd
= dev_open(dev
, O_RDONLY
);
627 if (dfd
< 0) continue;
628 if (tst
->ss
->load_super(tst
, dfd
,
636 /* FIXME this is a bad test to be using */
639 fprintf(stderr
, Name
": cannot find valid superblock in this array - HELP\n");
643 /* Make sure device is large enough */
644 if (tst
->ss
->avail_size(tst
, ldsize
/512) <
648 if (add_dev
!= dv
->devname
)
650 fprintf(stderr
, Name
": %s not large enough to join array\n",
655 /* Possibly this device was recently part of the array
656 * and was temporarily removed, and is now being re-added.
657 * If so, we can simply re-add it.
659 tst
->ss
->uuid_from_super(tst
, duuid
);
661 /* re-add doesn't work for version-1 superblocks
664 if (array
.major_version
== 1 &&
665 get_linux_version() <= 2006018)
669 st
->ss
->getinfo_super(st
, &mdi
, NULL
);
670 st
->ss
->uuid_from_super(st
, ouuid
);
671 if ((mdi
.disk
.state
& (1<<MD_DISK_ACTIVE
)) &&
672 !(mdi
.disk
.state
& (1<<MD_DISK_FAULTY
)) &&
673 memcmp(duuid
, ouuid
, sizeof(ouuid
))==0) {
674 /* look like it is worth a try. Need to
675 * make sure kernel will accept it though.
677 disc
.number
= mdi
.disk
.number
;
678 if (ioctl(fd
, GET_DISK_INFO
, &disc
) != 0
679 || disc
.major
!= 0 || disc
.minor
!= 0
682 disc
.major
= major(stb
.st_rdev
);
683 disc
.minor
= minor(stb
.st_rdev
);
684 disc
.number
= mdi
.disk
.number
;
685 disc
.raid_disk
= mdi
.disk
.raid_disk
;
686 disc
.state
= mdi
.disk
.state
;
687 if (dv
->writemostly
== 1)
688 disc
.state
|= 1 << MD_DISK_WRITEMOSTLY
;
689 if (dv
->writemostly
== 2)
690 disc
.state
&= ~(1 << MD_DISK_WRITEMOSTLY
);
691 remove_partitions(tfd
);
694 /* don't even try if disk is marked as faulty */
696 if (ioctl(fd
, ADD_NEW_DISK
, &disc
) == 0) {
698 fprintf(stderr
, Name
": re-added %s\n", add_dev
);
702 if (errno
== ENOMEM
|| errno
== EROFS
) {
703 fprintf(stderr
, Name
": add new device failed for %s: %s\n",
704 add_dev
, strerror(errno
));
705 if (add_dev
!= dv
->devname
)
713 if (add_dev
!= dv
->devname
) {
716 ": --re-add for %s to %s is not possible\n",
728 ": --re-add for %s to %s is not possible\n",
729 dv
->devname
, devname
);
733 fprintf(stderr
, Name
": %s reports being an active member for %s, but a --re-add fails.\n",
734 dv
->devname
, devname
);
735 fprintf(stderr
, Name
": not performing --add as that would convert %s in to a spare.\n",
737 fprintf(stderr
, Name
": To make this a spare, use \"mdadm --zero-superblock %s\" first.\n",
744 /* non-persistent. Must ensure that new drive
745 * is at least array.size big.
747 if (ldsize
/512 < array_size
) {
748 fprintf(stderr
, Name
": %s not large enough to join array\n",
755 /* committed to really trying this device now*/
757 remove_partitions(tfd
);
761 /* in 2.6.17 and earlier, version-1 superblocks won't
762 * use the number we write, but will choose a free number.
763 * we must choose the same free number, which requires
764 * starting at 'raid_disks' and counting up
766 for (j
= array
.raid_disks
; j
< tst
->max_devs
; j
++) {
768 if (ioctl(fd
, GET_DISK_INFO
, &disc
))
770 if (disc
.major
==0 && disc
.minor
==0)
772 if (disc
.state
& 8) /* removed */
775 disc
.major
= major(stb
.st_rdev
);
776 disc
.minor
= minor(stb
.st_rdev
);
779 if (array
.not_persistent
==0 || tst
->ss
->external
) {
781 if (dv
->writemostly
== 1)
782 disc
.state
|= 1 << MD_DISK_WRITEMOSTLY
;
783 dfd
= dev_open(dv
->devname
, O_RDWR
| O_EXCL
|O_DIRECT
);
784 if (tst
->ss
->add_to_super(tst
, &disc
, dfd
,
789 /* write_init_super will close 'dfd' */
790 if (tst
->ss
->external
)
791 /* mdmon will write the metadata */
793 else if (tst
->ss
->write_init_super(tst
))
795 } else if (dv
->re_add
) {
796 /* this had better be raid1.
797 * As we are "--re-add"ing we must find a spare slot
800 char *used
= malloc(array
.raid_disks
);
801 memset(used
, 0, array
.raid_disks
);
802 for (j
=0; j
< tst
->max_devs
; j
++) {
803 mdu_disk_info_t disc2
;
805 if (ioctl(fd
, GET_DISK_INFO
, &disc2
))
807 if (disc2
.major
==0 && disc2
.minor
==0)
809 if (disc2
.state
& 8) /* removed */
811 if (disc2
.raid_disk
< 0)
813 if (disc2
.raid_disk
> array
.raid_disks
)
815 used
[disc2
.raid_disk
] = 1;
817 for (j
=0 ; j
<array
.raid_disks
; j
++)
820 disc
.state
|= (1<<MD_DISK_SYNC
);
825 if (dv
->writemostly
== 1)
826 disc
.state
|= (1 << MD_DISK_WRITEMOSTLY
);
827 if (tst
->ss
->external
) {
828 /* add a disk to an external metadata container
829 * only if mdmon is around to see it
831 struct mdinfo new_mdi
;
834 int devnum
= fd2devnum(fd
);
836 container_fd
= open_dev_excl(devnum
);
837 if (container_fd
< 0) {
838 fprintf(stderr
, Name
": add failed for %s:"
839 " could not get exclusive access to container\n",
844 if (!mdmon_running(devnum
)) {
845 fprintf(stderr
, Name
": add failed for %s: mdmon not running\n",
851 sra
= sysfs_read(container_fd
, -1, 0);
853 fprintf(stderr
, Name
": add failed for %s: sysfs_read failed\n",
858 sra
->array
.level
= LEVEL_CONTAINER
;
859 /* Need to set data_offset and component_size */
860 tst
->ss
->getinfo_super(tst
, &new_mdi
, NULL
);
861 new_mdi
.disk
.major
= disc
.major
;
862 new_mdi
.disk
.minor
= disc
.minor
;
863 new_mdi
.recovery_start
= 0;
864 if (sysfs_add_disk(sra
, &new_mdi
, 0) != 0) {
865 fprintf(stderr
, Name
": add new device to external metadata"
866 " failed for %s\n", dv
->devname
);
870 ping_monitor(devnum2devname(devnum
));
873 } else if (ioctl(fd
, ADD_NEW_DISK
, &disc
)) {
874 fprintf(stderr
, Name
": add new device failed for %s as %d: %s\n",
875 dv
->devname
, j
, strerror(errno
));
879 fprintf(stderr
, Name
": added %s\n", dv
->devname
);
885 fprintf(stderr
, Name
": Cannot remove disks from a"
886 " \'member\' array, perform this"
887 " operation on the parent container\n");
892 if (tst
->ss
->external
) {
893 /* To remove a device from a container, we must
894 * check that it isn't in use in an array.
895 * This involves looking in the 'holders'
896 * directory - there must be just one entry,
898 * To ensure that it doesn't get used as a
899 * hold spare while we are checking, we
900 * get an O_EXCL open on the container
902 int dnum
= fd2devnum(fd
);
903 lfd
= open_dev_excl(dnum
);
906 ": Cannot get exclusive access "
907 " to container - odd\n");
912 /* in the detached case it is not possible to
913 * check if we are the unique holder, so just
914 * rely on the 'detached' checks
916 if (strcmp(dv
->devname
, "detached") == 0 ||
918 sysfs_unique_holder(dnum
, stb
.st_rdev
))
922 ": %s is %s, cannot remove.\n",
924 errno
== EEXIST
? "still in use":
930 /* FIXME check that it is a current member */
932 /* device has been removed and we don't know
933 * the major:minor number
935 int n
= write(sysfd
, "remove", 6);
943 err
= ioctl(fd
, HOT_REMOVE_DISK
, (unsigned long)stb
.st_rdev
);
944 if (err
&& errno
== ENODEV
) {
945 /* Old kernels rejected this if no personality
947 struct mdinfo
*sra
= sysfs_read(fd
, 0, GET_DEVS
);
948 struct mdinfo
*dv
= NULL
;
951 for ( ; dv
; dv
=dv
->next
)
952 if (dv
->disk
.major
== (int)major(stb
.st_rdev
) &&
953 dv
->disk
.minor
== (int)minor(stb
.st_rdev
))
956 err
= sysfs_set_str(sra
, dv
,
965 fprintf(stderr
, Name
": hot remove failed "
966 "for %s: %s\n", dnprintable
,
972 if (tst
->ss
->external
) {
974 * Before dropping our exclusive open we make an
975 * attempt at preventing mdmon from seeing an
976 * 'add' event before reconciling this 'remove'
979 char *name
= devnum2devname(fd2devnum(fd
));
982 fprintf(stderr
, Name
": unable to get container name\n");
993 fprintf(stderr
, Name
": hot removed %s from %s\n",
994 dnprintable
, devname
);
997 case 'f': /* set faulty */
998 /* FIXME check current member */
999 if ((sysfd
>= 0 && write(sysfd
, "faulty", 6) != 6) ||
1000 (sysfd
< 0 && ioctl(fd
, SET_DISK_FAULTY
,
1001 (unsigned long) stb
.st_rdev
))) {
1002 fprintf(stderr
, Name
": set device faulty failed for %s: %s\n",
1003 dnprintable
, strerror(errno
));
1013 fprintf(stderr
, Name
": set %s faulty in %s\n",
1014 dnprintable
, devname
);
1018 if (test
&& count
== 0)
1023 int autodetect(void)
1025 /* Open any md device, and issue the RAID_AUTORUN ioctl */
1027 int fd
= dev_open("9:0", O_RDONLY
);
1029 if (ioctl(fd
, RAID_AUTORUN
, 0) == 0)
1036 int Update_subarray(char *dev
, char *subarray
, char *update
, struct mddev_ident
*ident
, int quiet
)
1038 struct supertype supertype
, *st
= &supertype
;
1041 memset(st
, 0, sizeof(*st
));
1043 fd
= open_subarray(dev
, subarray
, st
, quiet
);
1047 if (!st
->ss
->update_subarray
) {
1050 Name
": Operation not supported for %s metadata\n",
1055 if (mdmon_running(st
->devnum
))
1056 st
->update_tail
= &st
->updates
;
1058 rv
= st
->ss
->update_subarray(st
, subarray
, update
, ident
);
1062 fprintf(stderr
, Name
": Failed to update %s of subarray-%s in %s\n",
1063 update
, subarray
, dev
);
1064 } else if (st
->update_tail
)
1065 flush_metadata_updates(st
);
1067 st
->ss
->sync_metadata(st
);
1069 if (rv
== 0 && strcmp(update
, "name") == 0 && !quiet
)
1071 Name
": Updated subarray-%s name from %s, UUIDs may have changed\n",
1075 st
->ss
->free_super(st
);