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e0d19036 NB |
1 | /* |
2 | * mdadm - manage Linux "md" devices aka RAID arrays. | |
3 | * | |
e736b623 | 4 | * Copyright (C) 2002-2009 Neil Brown <neilb@suse.de> |
e0d19036 NB |
5 | * |
6 | * | |
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. | |
11 | * | |
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. | |
16 | * | |
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 | |
20 | * | |
21 | * Author: Neil Brown | |
e736b623 | 22 | * Email: <neilb@suse.de> |
e0d19036 NB |
23 | */ |
24 | ||
25 | #include "mdadm.h" | |
26 | #include "md_p.h" | |
27 | #include "md_u.h" | |
28 | ||
29 | int Query(char *dev) | |
30 | { | |
31 | /* Give a brief description of the device, | |
aba69144 | 32 | * whether it is an md device and whether it has |
e0d19036 NB |
33 | * a superblock |
34 | */ | |
fb97b4d6 | 35 | int fd = open(dev, O_RDONLY); |
e0d19036 | 36 | int ioctlerr; |
3d9d1880 | 37 | int superror; |
4b1ac34b | 38 | struct mdinfo info; |
e0d19036 | 39 | mdu_array_info_t array; |
82d9eba6 | 40 | struct supertype *st = NULL; |
4b1ac34b | 41 | |
e0d19036 | 42 | unsigned long long larray_size; |
e0d19036 NB |
43 | struct stat stb; |
44 | char *mddev; | |
45 | mdu_disk_info_t disc; | |
46 | char *activity; | |
47 | ||
48 | if (fd < 0){ | |
e7b84f9d | 49 | pr_err("cannot open %s: %s\n", |
e0d19036 NB |
50 | dev, strerror(errno)); |
51 | return 1; | |
52 | } | |
53 | ||
9cd39f01 | 54 | if (md_get_array_info(fd, &array) < 0) |
e0d19036 | 55 | ioctlerr = errno; |
9cd39f01 JS |
56 | else |
57 | ioctlerr = 0; | |
aba69144 | 58 | |
e0d19036 NB |
59 | fstat(fd, &stb); |
60 | ||
5cb85996 | 61 | if (!ioctlerr) { |
beae1dfe NB |
62 | if (!get_dev_size(fd, NULL, &larray_size)) |
63 | larray_size = 0; | |
e0d19036 | 64 | } |
e0d19036 | 65 | |
5cb85996 | 66 | if (ioctlerr == ENODEV) |
e0d19036 NB |
67 | printf("%s: is an md device which is not active\n", dev); |
68 | else if (ioctlerr) | |
69 | printf("%s: is an md device, but gives \"%s\" when queried\n", | |
70 | dev, strerror(ioctlerr)); | |
71 | else { | |
72 | printf("%s: %s %s %d devices, %d spare%s. Use mdadm --detail for more detail.\n", | |
73 | dev, | |
f0ec6710 | 74 | human_size_brief(larray_size,IEC), |
e0d19036 NB |
75 | map_num(pers, array.level), |
76 | array.raid_disks, | |
77 | array.spare_disks, array.spare_disks==1?"":"s"); | |
78 | } | |
82d9eba6 | 79 | st = guess_super(fd); |
61a30986 | 80 | if (st && st->ss->compare_super != NULL) |
3da92f27 | 81 | superror = st->ss->load_super(st, fd, dev); |
3d9d1880 | 82 | else |
f9ce90ba | 83 | superror = -1; |
4b1ac34b NB |
84 | close(fd); |
85 | if (superror == 0) { | |
e0d19036 | 86 | /* array might be active... */ |
4610608a N |
87 | int uuid[4]; |
88 | struct map_ent *me, *map = NULL; | |
a5d85af7 | 89 | st->ss->getinfo_super(st, &info, NULL); |
4610608a N |
90 | st->ss->uuid_from_super(st, uuid); |
91 | me = map_by_uuid(&map, uuid); | |
92 | if (me) { | |
93 | mddev = me->path; | |
fbf8a0b7 NB |
94 | disc.number = info.disk.number; |
95 | activity = "undetected"; | |
96 | if (mddev && (fd = open(mddev, O_RDONLY))>=0) { | |
5cb85996 | 97 | if (md_get_array_info(fd, &array) >= 0) { |
d97572f5 | 98 | if (md_get_disk_info(fd, &disc) >= 0 && |
fbf8a0b7 NB |
99 | makedev((unsigned)disc.major,(unsigned)disc.minor) == stb.st_rdev) |
100 | activity = "active"; | |
101 | else | |
102 | activity = "mismatch"; | |
103 | } | |
104 | close(fd); | |
e0d19036 | 105 | } |
fbf8a0b7 | 106 | } else { |
4610608a | 107 | activity = "inactive"; |
fbf8a0b7 | 108 | mddev = "array"; |
e0d19036 | 109 | } |
fbf8a0b7 | 110 | printf("%s: device %d in %d device %s %s %s. Use mdadm --examine for more detail.\n", |
aba69144 | 111 | dev, |
4b1ac34b | 112 | info.disk.number, info.array.raid_disks, |
e0d19036 | 113 | activity, |
4b1ac34b | 114 | map_num(pers, info.array.level), |
fbf8a0b7 | 115 | mddev); |
b8ac1967 | 116 | if (st->ss == &super0) |
e7bb5d23 | 117 | put_md_name(mddev); |
e0d19036 NB |
118 | } |
119 | return 0; | |
120 | } |