]>
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
;
390 if (strcmp(dv
->devname
, "failed")==0 ||
391 strcmp(dv
->devname
, "faulty")==0) {
392 if (dv
->disposition
!= 'r') {
393 fprintf(stderr
, Name
": %s only meaningful "
394 "with -r, not -%c\n",
395 dv
->devname
, dv
->disposition
);
398 for (; j
< array
.raid_disks
+ array
.nr_disks
; j
++) {
401 if (ioctl(fd
, GET_DISK_INFO
, &disc
))
403 if (disc
.major
== 0 && disc
.minor
== 0)
405 if ((disc
.state
& 1) == 0) /* faulty */
407 dev
= makedev(disc
.major
, disc
.minor
);
408 if (stb
.st_rdev
== dev
)
409 /* already did that one */
413 /* same slot again next time - things might
416 sprintf(dvname
,"%d:%d", disc
.major
, disc
.minor
);
417 dnprintable
= dvname
;
422 } else if (strcmp(dv
->devname
, "detached") == 0) {
423 if (dv
->disposition
!= 'r' && dv
->disposition
!= 'f') {
424 fprintf(stderr
, Name
": %s only meaningful "
425 "with -r of -f, not -%c\n",
426 dv
->devname
, dv
->disposition
);
429 for (; j
< array
.raid_disks
+ array
.nr_disks
; j
++) {
433 if (ioctl(fd
, GET_DISK_INFO
, &disc
))
435 if (disc
.major
== 0 && disc
.minor
== 0)
437 sprintf(dvname
,"%d:%d", disc
.major
, disc
.minor
);
438 sfd
= dev_open(dvname
, O_RDONLY
);
443 if (dv
->disposition
== 'f' &&
444 (disc
.state
& 1) == 1) /* already faulty */
448 dev
= makedev(disc
.major
, disc
.minor
);
449 if (stb
.st_rdev
== dev
)
450 /* already did that one */
454 /* same slot again next time - things might
457 dnprintable
= dvname
;
462 } else if (strcmp(dv
->devname
, "missing") == 0) {
463 if (dv
->disposition
!= 'a' || dv
->re_add
== 0) {
464 fprintf(stderr
, Name
": 'missing' only meaningful "
468 if (add_devlist
== NULL
)
469 add_devlist
= conf_get_devs();
470 if (add_devlist
== NULL
) {
471 fprintf(stderr
, Name
": no devices to scan for missing members.");
474 add_dev
= add_devlist
->devname
;
475 add_devlist
= add_devlist
->next
;
476 if (add_devlist
!= NULL
)
478 if (stat(add_dev
, &stb
) < 0)
480 } else if (strchr(dv
->devname
, '/') == NULL
&&
481 strlen(dv
->devname
) < 50) {
482 /* Assume this is a kernel-internal name like 'sda1' */
485 if (dv
->disposition
!= 'r' && dv
->disposition
!= 'f') {
486 fprintf(stderr
, Name
": %s only meaningful "
487 "with -r or -f, not -%c\n",
488 dv
->devname
, dv
->disposition
);
492 sprintf(dname
, "dev-%s", dv
->devname
);
493 sysfd
= sysfs_open(fd2devnum(fd
), dname
, "block/dev");
497 if (sysfs_fd_get_str(sysfd
, dn
, 20) > 0 &&
498 sscanf(dn
, "%d:%d", &mj
,&mn
) == 2) {
499 stb
.st_rdev
= makedev(mj
,mn
);
506 sysfd
= sysfs_open(fd2devnum(fd
), dname
, "state");
508 fprintf(stderr
, Name
": %s does not appear "
509 "to be a component of %s\n",
510 dv
->devname
, devname
);
517 tfd
= dev_open(dv
->devname
, O_RDONLY
);
518 if (tfd
< 0 && dv
->disposition
== 'r' &&
519 lstat(dv
->devname
, &stb
) == 0)
520 /* Be happy, the lstat worked, that is
521 * enough for --remove
525 if (tfd
< 0 || fstat(tfd
, &stb
) != 0) {
526 fprintf(stderr
, Name
": cannot find %s: %s\n",
527 dv
->devname
, strerror(errno
));
535 if ((stb
.st_mode
& S_IFMT
) != S_IFBLK
) {
536 fprintf(stderr
, Name
": %s is not a "
542 switch(dv
->disposition
){
544 fprintf(stderr
, Name
": internal error - devmode[%s]=%d\n",
545 dv
->devname
, dv
->disposition
);
549 if (tst
->subarray
[0]) {
550 fprintf(stderr
, Name
": Cannot add disks to a"
551 " \'member\' array, perform this"
552 " operation on the parent container\n");
555 /* Make sure it isn't in use (in 2.6 or later) */
556 tfd
= dev_open(add_dev
, O_RDONLY
|O_EXCL
|O_DIRECT
);
557 if (tfd
< 0 && add_dev
!= dv
->devname
)
560 fprintf(stderr
, Name
": Cannot open %s: %s\n",
561 dv
->devname
, strerror(errno
));
567 if (array
.not_persistent
==0)
568 st
->ss
->load_super(st
, tfd
, NULL
);
570 if (add_dev
== dv
->devname
) {
571 if (!get_dev_size(tfd
, dv
->devname
, &ldsize
)) {
575 } else if (!get_dev_size(tfd
, NULL
, &ldsize
)) {
581 if (!tst
->ss
->external
&&
582 array
.major_version
== 0 &&
583 md_get_version(fd
)%100 < 2) {
586 if (ioctl(fd
, HOT_ADD_DISK
,
587 (unsigned long)stb
.st_rdev
)==0) {
589 fprintf(stderr
, Name
": hot added %s\n",
594 fprintf(stderr
, Name
": hot add failed for %s: %s\n",
595 add_dev
, strerror(errno
));
599 if (array
.not_persistent
== 0 || tst
->ss
->external
) {
601 /* need to find a sample superblock to copy, and
602 * a spare slot to use.
603 * For 'external' array (well, container based),
604 * We can just load the metadata for the array.
607 /* already loaded */;
608 else if (tst
->ss
->external
) {
609 tst
->ss
->load_super(tst
, fd
, NULL
);
610 } else for (j
= 0; j
< tst
->max_devs
; j
++) {
614 if (ioctl(fd
, GET_DISK_INFO
, &disc
))
616 if (disc
.major
==0 && disc
.minor
==0)
618 if ((disc
.state
& 4)==0) continue; /* sync */
619 /* Looks like a good device to try */
620 dev
= map_dev(disc
.major
, disc
.minor
, 1);
622 dfd
= dev_open(dev
, O_RDONLY
);
623 if (dfd
< 0) continue;
624 if (tst
->ss
->load_super(tst
, dfd
,
632 /* FIXME this is a bad test to be using */
635 fprintf(stderr
, Name
": cannot find valid superblock in this array - HELP\n");
639 /* Make sure device is large enough */
640 if (tst
->ss
->avail_size(tst
, ldsize
/512) <
644 if (add_dev
!= dv
->devname
)
646 fprintf(stderr
, Name
": %s not large enough to join array\n",
651 /* Possibly this device was recently part of the array
652 * and was temporarily removed, and is now being re-added.
653 * If so, we can simply re-add it.
655 tst
->ss
->uuid_from_super(tst
, duuid
);
657 /* re-add doesn't work for version-1 superblocks
660 if (array
.major_version
== 1 &&
661 get_linux_version() <= 2006018)
664 st
->ss
->uuid_from_super(st
, ouuid
);
665 if (memcmp(duuid
, ouuid
, sizeof(ouuid
))==0) {
666 /* looks close enough for now. Kernel
667 * will worry about whether a bitmap
668 * based reconstruction is possible.
671 st
->ss
->getinfo_super(st
, &mdi
);
672 disc
.major
= major(stb
.st_rdev
);
673 disc
.minor
= minor(stb
.st_rdev
);
674 disc
.number
= mdi
.disk
.number
;
675 disc
.raid_disk
= mdi
.disk
.raid_disk
;
676 disc
.state
= mdi
.disk
.state
;
677 if (dv
->writemostly
== 1)
678 disc
.state
|= 1 << MD_DISK_WRITEMOSTLY
;
679 if (dv
->writemostly
== 2)
680 disc
.state
&= ~(1 << MD_DISK_WRITEMOSTLY
);
681 remove_partitions(tfd
);
684 /* don't even try if disk is marked as faulty */
686 if ((disc
.state
& 1) == 0 &&
687 ioctl(fd
, ADD_NEW_DISK
, &disc
) == 0) {
689 fprintf(stderr
, Name
": re-added %s\n", add_dev
);
693 if (errno
== ENOMEM
|| errno
== EROFS
) {
694 fprintf(stderr
, Name
": add new device failed for %s: %s\n",
695 add_dev
, strerror(errno
));
696 if (add_dev
!= dv
->devname
)
700 /* fall back on normal-add */
703 if (add_dev
!= dv
->devname
) {
706 ": --re-add for %s to %s is not possible\n",
718 ": --re-add for %s to %s is not possible\n",
719 dv
->devname
, devname
);
723 /* non-persistent. Must ensure that new drive
724 * is at least array.size big.
726 if (ldsize
/512 < array_size
) {
727 fprintf(stderr
, Name
": %s not large enough to join array\n",
734 /* committed to really trying this device now*/
736 remove_partitions(tfd
);
740 /* in 2.6.17 and earlier, version-1 superblocks won't
741 * use the number we write, but will choose a free number.
742 * we must choose the same free number, which requires
743 * starting at 'raid_disks' and counting up
745 for (j
= array
.raid_disks
; j
< tst
->max_devs
; j
++) {
747 if (ioctl(fd
, GET_DISK_INFO
, &disc
))
749 if (disc
.major
==0 && disc
.minor
==0)
751 if (disc
.state
& 8) /* removed */
754 disc
.major
= major(stb
.st_rdev
);
755 disc
.minor
= minor(stb
.st_rdev
);
758 if (array
.not_persistent
==0 || tst
->ss
->external
) {
760 if (dv
->writemostly
== 1)
761 disc
.state
|= 1 << MD_DISK_WRITEMOSTLY
;
762 dfd
= dev_open(dv
->devname
, O_RDWR
| O_EXCL
|O_DIRECT
);
763 if (tst
->ss
->add_to_super(tst
, &disc
, dfd
,
768 /* write_init_super will close 'dfd' */
769 if (tst
->ss
->external
)
770 /* mdmon will write the metadata */
772 else if (tst
->ss
->write_init_super(tst
))
774 } else if (dv
->re_add
) {
775 /* this had better be raid1.
776 * As we are "--re-add"ing we must find a spare slot
779 char *used
= malloc(array
.raid_disks
);
780 memset(used
, 0, array
.raid_disks
);
781 for (j
=0; j
< tst
->max_devs
; j
++) {
782 mdu_disk_info_t disc2
;
784 if (ioctl(fd
, GET_DISK_INFO
, &disc2
))
786 if (disc2
.major
==0 && disc2
.minor
==0)
788 if (disc2
.state
& 8) /* removed */
790 if (disc2
.raid_disk
< 0)
792 if (disc2
.raid_disk
> array
.raid_disks
)
794 used
[disc2
.raid_disk
] = 1;
796 for (j
=0 ; j
<array
.raid_disks
; j
++)
799 disc
.state
|= (1<<MD_DISK_SYNC
);
804 if (dv
->writemostly
== 1)
805 disc
.state
|= (1 << MD_DISK_WRITEMOSTLY
);
806 if (tst
->ss
->external
) {
807 /* add a disk to an external metadata container
808 * only if mdmon is around to see it
810 struct mdinfo new_mdi
;
813 int devnum
= fd2devnum(fd
);
815 container_fd
= open_dev_excl(devnum
);
816 if (container_fd
< 0) {
817 fprintf(stderr
, Name
": add failed for %s:"
818 " could not get exclusive access to container\n",
823 if (!mdmon_running(devnum
)) {
824 fprintf(stderr
, Name
": add failed for %s: mdmon not running\n",
830 sra
= sysfs_read(container_fd
, -1, 0);
832 fprintf(stderr
, Name
": add failed for %s: sysfs_read failed\n",
837 sra
->array
.level
= LEVEL_CONTAINER
;
838 /* Need to set data_offset and component_size */
839 tst
->ss
->getinfo_super(tst
, &new_mdi
);
840 new_mdi
.disk
.major
= disc
.major
;
841 new_mdi
.disk
.minor
= disc
.minor
;
842 new_mdi
.recovery_start
= 0;
843 if (sysfs_add_disk(sra
, &new_mdi
, 0) != 0) {
844 fprintf(stderr
, Name
": add new device to external metadata"
845 " failed for %s\n", dv
->devname
);
849 ping_monitor(devnum2devname(devnum
));
852 } else if (ioctl(fd
, ADD_NEW_DISK
, &disc
)) {
853 fprintf(stderr
, Name
": add new device failed for %s as %d: %s\n",
854 dv
->devname
, j
, strerror(errno
));
858 fprintf(stderr
, Name
": added %s\n", dv
->devname
);
863 if (tst
->subarray
[0]) {
864 fprintf(stderr
, Name
": Cannot remove disks from a"
865 " \'member\' array, perform this"
866 " operation on the parent container\n");
871 if (tst
->ss
->external
) {
872 /* To remove a device from a container, we must
873 * check that it isn't in use in an array.
874 * This involves looking in the 'holders'
875 * directory - there must be just one entry,
877 * To ensure that it doesn't get used as a
878 * hold spare while we are checking, we
879 * get an O_EXCL open on the container
881 int dnum
= fd2devnum(fd
);
882 lfd
= open_dev_excl(dnum
);
885 ": Cannot get exclusive access "
886 " to container - odd\n");
891 /* in the detached case it is not possible to
892 * check if we are the unique holder, so just
893 * rely on the 'detached' checks
895 if (strcmp(dv
->devname
, "detached") == 0 ||
897 sysfs_unique_holder(dnum
, stb
.st_rdev
))
901 ": %s is %s, cannot remove.\n",
903 errno
== EEXIST
? "still in use":
909 /* FIXME check that it is a current member */
911 /* device has been removed and we don't know
912 * the major:minor number
914 int n
= write(sysfd
, "remove", 6);
922 err
= ioctl(fd
, HOT_REMOVE_DISK
, (unsigned long)stb
.st_rdev
);
923 if (err
&& errno
== ENODEV
) {
924 /* Old kernels rejected this if no personality
926 struct mdinfo
*sra
= sysfs_read(fd
, 0, GET_DEVS
);
927 struct mdinfo
*dv
= NULL
;
930 for ( ; dv
; dv
=dv
->next
)
931 if (dv
->disk
.major
== (int)major(stb
.st_rdev
) &&
932 dv
->disk
.minor
== (int)minor(stb
.st_rdev
))
935 err
= sysfs_set_str(sra
, dv
,
944 fprintf(stderr
, Name
": hot remove failed "
945 "for %s: %s\n", dnprintable
,
951 if (tst
->ss
->external
) {
953 * Before dropping our exclusive open we make an
954 * attempt at preventing mdmon from seeing an
955 * 'add' event before reconciling this 'remove'
958 char *name
= devnum2devname(fd2devnum(fd
));
961 fprintf(stderr
, Name
": unable to get container name\n");
972 fprintf(stderr
, Name
": hot removed %s from %s\n",
973 dnprintable
, devname
);
976 case 'f': /* set faulty */
977 /* FIXME check current member */
978 if ((sysfd
>= 0 && write(sysfd
, "faulty", 6) != 6) ||
979 (sysfd
< 0 && ioctl(fd
, SET_DISK_FAULTY
,
980 (unsigned long) stb
.st_rdev
))) {
981 fprintf(stderr
, Name
": set device faulty failed for %s: %s\n",
982 dnprintable
, strerror(errno
));
992 fprintf(stderr
, Name
": set %s faulty in %s\n",
993 dnprintable
, devname
);
997 if (test
&& count
== 0)
1002 int autodetect(void)
1004 /* Open any md device, and issue the RAID_AUTORUN ioctl */
1006 int fd
= dev_open("9:0", O_RDONLY
);
1008 if (ioctl(fd
, RAID_AUTORUN
, 0) == 0)
1015 int Update_subarray(char *dev
, char *subarray
, char *update
, mddev_ident_t ident
, int quiet
)
1017 struct supertype supertype
, *st
= &supertype
;
1020 memset(st
, 0, sizeof(*st
));
1021 if (snprintf(st
->subarray
, sizeof(st
->subarray
), "%s", subarray
) >=
1022 (signed)sizeof(st
->subarray
)) {
1025 Name
": Input overflow for subarray '%s' > %zu bytes\n",
1026 subarray
, sizeof(st
->subarray
) - 1);
1030 fd
= open_subarray(dev
, st
, quiet
);
1034 if (!st
->ss
->update_subarray
) {
1037 Name
": Operation not supported for %s metadata\n",
1042 if (mdmon_running(st
->devnum
))
1043 st
->update_tail
= &st
->updates
;
1045 rv
= st
->ss
->update_subarray(st
, update
, ident
);
1049 fprintf(stderr
, Name
": Failed to update %s of subarray-%s in %s\n",
1050 update
, subarray
, dev
);
1051 } else if (st
->update_tail
)
1052 flush_metadata_updates(st
);
1054 st
->ss
->sync_metadata(st
);
1056 if (rv
== 0 && strcmp(update
, "name") == 0 && !quiet
)
1058 Name
": Updated subarray-%s name from %s, UUIDs may have changed\n",
1062 st
->ss
->free_super(st
);