]>
git.ipfire.org Git - thirdparty/mdadm.git/blob - Kill.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>
24 * Added by Dale Stephenson
25 * steph@snapserver.com
32 int Kill(char *dev
, struct supertype
*st
, int force
, int quiet
, int noexcl
)
35 * Nothing fancy about Kill. It just zeroes out a superblock
36 * Definitely not safe.
38 * 0 - a zero superblock was successfully written out
39 * 1 - failed to write the zero superblock
40 * 2 - failed to open the device or find a superblock.
47 fd
= open(dev
, O_RDWR
|(noexcl
? 0 : O_EXCL
));
50 fprintf(stderr
, Name
": Couldn't open %s for write - not zeroing\n",
56 if (st
== NULL
|| st
->ss
->init_super
== NULL
) {
58 fprintf(stderr
, Name
": Unrecognised md component device - %s\n", dev
);
62 st
->ignore_hw_compat
= 1;
63 rv
= st
->ss
->load_super(st
, fd
, dev
);
65 rv
= 0; /* ignore bad data in superblock */
66 if (rv
== 0 || (force
&& rv
>= 2)) {
67 st
->ss
->free_super(st
);
68 st
->ss
->init_super(st
, NULL
, 0, "", NULL
, NULL
);
69 if (st
->ss
->store_super(st
, fd
)) {
71 fprintf(stderr
, Name
": Could not zero superblock on %s\n",
76 fprintf(stderr
, Name
": superblock zeroed anyway\n");
84 int Kill_subarray(char *dev
, char *subarray
, int quiet
)
86 /* Delete a subarray out of a container, the subarry must be
87 * inactive. The subarray string must be a subarray index
90 * 0 = successfully deleted subarray from all container members
91 * 1 = failed to sync metadata to one or more devices
92 * 2 = failed to find the container, subarray, or other resource
95 struct supertype supertype
, *st
= &supertype
;
98 memset(st
, 0, sizeof(*st
));
100 fd
= open_subarray(dev
, subarray
, st
, quiet
);
104 if (!st
->ss
->kill_subarray
) {
107 Name
": Operation not supported for %s metadata\n",
112 if (is_subarray_active(subarray
, st
->devname
)) {
115 Name
": Subarray-%s still active, aborting\n",
120 if (mdmon_running(st
->devnum
))
121 st
->update_tail
= &st
->updates
;
123 /* ok we've found our victim, drop the axe */
124 rv
= st
->ss
->kill_subarray(st
);
128 Name
": Failed to delete subarray-%s from %s\n",
133 /* FIXME these routines do not report success/failure */
135 flush_metadata_updates(st
);
137 st
->ss
->sync_metadata(st
);
141 Name
": Deleted subarray-%s from %s, UUIDs may have changed\n",
147 st
->ss
->free_super(st
);