]>
git.ipfire.org Git - thirdparty/mdadm.git/blob - Query.c
2 * mdadm - manage Linux "md" devices aka RAID arrays.
4 * Copyright (C) 2002-2009 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>
31 /* Give a brief description of the device,
32 * whether it is an md device and whether it has
36 int ioctlerr
, staterr
;
38 int level
, raid_disks
, spare_disks
;
41 struct supertype
*st
= NULL
;
42 unsigned long long larray_size
;
48 fd
= open(dev
, O_RDONLY
);
50 pr_err("cannot open %s: %s\n", dev
, strerror(errno
));
54 if (fstat(fd
, &stb
) < 0)
61 sra
= sysfs_read(fd
, dev
, GET_DISKS
| GET_LEVEL
| GET_DEVS
| GET_STATE
);
63 level
= sra
->array
.level
;
64 raid_disks
= sra
->array
.raid_disks
;
65 spare_disks
= sra
->array
.spare_disks
;
67 mdu_array_info_t array
;
69 if (md_get_array_info(fd
, &array
) < 0) {
76 raid_disks
= array
.raid_disks
;
77 spare_disks
= array
.spare_disks
;
81 if (!ioctlerr
&& !staterr
) {
82 if (!get_dev_size(fd
, NULL
, &larray_size
))
86 if (ioctlerr
== ENODEV
)
87 printf("%s: is an md device which is not active\n", dev
);
89 printf("%s: is an md device, but gives \"%s\" when queried\n",
90 dev
, strerror(ioctlerr
));
92 printf("%s: is not a valid md device, returning %s\n",
93 dev
, strerror(ioctlerr
));
95 printf("%s: %s %s %d devices, %d spare%s. Use mdadm --detail for more detail.\n",
96 dev
, human_size_brief(larray_size
,IEC
),
97 map_num(pers
, level
), raid_disks
,
98 spare_disks
, spare_disks
== 1 ? "" : "s");
100 st
= guess_super(fd
);
101 if (st
&& st
->ss
->compare_super
!= NULL
)
102 superror
= st
->ss
->load_super(st
, fd
, dev
);
107 /* array might be active... */
109 struct map_ent
*me
, *map
= NULL
;
110 st
->ss
->getinfo_super(st
, &info
, NULL
);
111 st
->ss
->uuid_from_super(st
, uuid
);
112 me
= map_by_uuid(&map
, uuid
);
115 disc
.number
= info
.disk
.number
;
116 activity
= "undetected";
117 if (mddev
&& (fd
= open(mddev
, O_RDONLY
))>=0) {
118 if (md_array_active(fd
)) {
119 if (md_get_disk_info(fd
, &disc
) >= 0 &&
120 makedev((unsigned)disc
.major
,(unsigned)disc
.minor
) == stb
.st_rdev
)
123 activity
= "mismatch";
128 activity
= "inactive";
131 printf("%s: device %d in %d device %s %s %s. Use mdadm --examine for more detail.\n",
133 info
.disk
.number
, info
.array
.raid_disks
,
135 map_num(pers
, info
.array
.level
),
137 if (st
->ss
== &super0
)