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Commit | Line | Data |
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64c4757e | 1 | /* |
9a9dab36 | 2 | * mdadm - manage Linux "md" devices aka RAID arrays. |
64c4757e | 3 | * |
4f589ad0 | 4 | * Copyright (C) 2001-2006 Neil Brown <neilb@suse.de> |
64c4757e 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 | |
22 | * Email: <neilb@cse.unsw.edu.au> | |
23 | * Paper: Neil Brown | |
24 | * School of Computer Science and Engineering | |
25 | * The University of New South Wales | |
26 | * Sydney, 2052 | |
27 | * Australia | |
28 | */ | |
29 | ||
9a9dab36 | 30 | #include "mdadm.h" |
cd29a5c8 | 31 | #include "dlink.h" |
64c4757e | 32 | |
82b27616 NB |
33 | #if ! defined(__BIG_ENDIAN) && ! defined(__LITTLE_ENDIAN) |
34 | #error no endian defined | |
35 | #endif | |
64c4757e NB |
36 | #include "md_u.h" |
37 | #include "md_p.h" | |
a1cbd7d0 NB |
38 | int Examine(mddev_dev_t devlist, int brief, int scan, |
39 | int SparcAdjust, struct supertype *forcest, | |
40 | char *homehost) | |
64c4757e NB |
41 | { |
42 | ||
43 | /* Read the raid superblock from a device and | |
44 | * display important content. | |
45 | * | |
46 | * If cannot be found, print reason: too small, bad magic | |
47 | * | |
48 | * Print: | |
49 | * version, ctime, level, size, raid+spare+ | |
50 | * prefered minor | |
51 | * uuid | |
52 | * | |
53 | * utime, state etc | |
54 | * | |
9a9dab36 | 55 | * If (brief) gather devices for same array and just print a mdadm.conf line including devices= |
8b0dabea | 56 | * if devlist==NULL, use conf_get_devs() |
64c4757e | 57 | */ |
cd29a5c8 | 58 | int fd; |
4b1ac34b | 59 | void *super = NULL; |
cd29a5c8 | 60 | int rv = 0; |
6baf9a87 | 61 | int err = 0; |
64c4757e | 62 | |
cd29a5c8 | 63 | struct array { |
4b1ac34b | 64 | void *super; |
82d9eba6 | 65 | struct supertype *st; |
4b1ac34b | 66 | struct mdinfo info; |
cd29a5c8 NB |
67 | void *devs; |
68 | struct array *next; | |
4b1ac34b | 69 | int spares; |
cd29a5c8 NB |
70 | } *arrays = NULL; |
71 | ||
cd29a5c8 | 72 | for (; devlist ; devlist=devlist->next) { |
82d9eba6 | 73 | struct supertype *st = forcest; |
f9ce90ba | 74 | |
8b0dabea | 75 | fd = dev_open(devlist->devname, O_RDONLY); |
cd29a5c8 | 76 | if (fd < 0) { |
751406f3 | 77 | if (!scan) { |
cd29a5c8 NB |
78 | fprintf(stderr,Name ": cannot open %s: %s\n", |
79 | devlist->devname, strerror(errno)); | |
e52f8e25 | 80 | rv = 1; |
751406f3 | 81 | } |
e52f8e25 | 82 | err = 1; |
cd29a5c8 NB |
83 | } |
84 | else { | |
82d9eba6 NB |
85 | if (!st) |
86 | st = guess_super(fd); | |
87 | if (st) | |
88 | err = st->ss->load_super(st, fd, &super, (brief||scan)?NULL:devlist->devname); | |
6baf9a87 | 89 | else { |
e52f8e25 | 90 | if (!brief) { |
6baf9a87 | 91 | fprintf(stderr, Name ": No md superblock detected on %s.\n", devlist->devname); |
e52f8e25 NB |
92 | rv = 1; |
93 | } | |
f9ce90ba | 94 | err = 1; |
6baf9a87 | 95 | } |
cd29a5c8 NB |
96 | close(fd); |
97 | } | |
e52f8e25 | 98 | if (err) |
cd29a5c8 | 99 | continue; |
4b1ac34b NB |
100 | |
101 | if (SparcAdjust) | |
e5eac01f | 102 | st->ss->update_super(NULL, super, "sparc2.2", devlist->devname, 0, 0, NULL); |
cd29a5c8 NB |
103 | /* Ok, its good enough to try, though the checksum could be wrong */ |
104 | if (brief) { | |
105 | struct array *ap; | |
106 | char *d; | |
107 | for (ap=arrays; ap; ap=ap->next) { | |
82d9eba6 | 108 | if (st->ss == ap->st->ss && st->ss->compare_super(&ap->super, super)==0) |
cd29a5c8 NB |
109 | break; |
110 | } | |
111 | if (!ap) { | |
112 | ap = malloc(sizeof(*ap)); | |
113 | ap->super = super; | |
114 | ap->devs = dl_head(); | |
115 | ap->next = arrays; | |
4b1ac34b | 116 | ap->spares = 0; |
82d9eba6 | 117 | ap->st = st; |
cd29a5c8 | 118 | arrays = ap; |
31317663 | 119 | st->ss->getinfo_super(&ap->info, super); |
4b1ac34b | 120 | } else { |
31317663 | 121 | st->ss->getinfo_super(&ap->info, super); |
4b1ac34b | 122 | free(super); |
cd29a5c8 | 123 | } |
4b1ac34b NB |
124 | if (!(ap->info.disk.state & MD_DISK_SYNC)) |
125 | ap->spares++; | |
cd29a5c8 NB |
126 | d = dl_strdup(devlist->devname); |
127 | dl_add(ap->devs, d); | |
128 | } else { | |
129 | printf("%s:\n",devlist->devname); | |
a1cbd7d0 | 130 | st->ss->examine_super(super, homehost); |
4b1ac34b | 131 | free(super); |
bd526cee | 132 | } |
82b27616 | 133 | } |
cd29a5c8 NB |
134 | if (brief) { |
135 | struct array *ap; | |
136 | for (ap=arrays; ap; ap=ap->next) { | |
137 | char sep='='; | |
cd29a5c8 | 138 | char *d; |
82d9eba6 | 139 | ap->st->ss->brief_examine_super(ap->super); |
4b1ac34b | 140 | if (ap->spares) printf(" spares=%d", ap->spares); |
22892d56 NB |
141 | if (brief > 1) { |
142 | printf(" devices"); | |
143 | for (d=dl_next(ap->devs); d!= ap->devs; d=dl_next(d)) { | |
144 | printf("%c%s", sep, d); | |
145 | sep=','; | |
146 | } | |
cd29a5c8 | 147 | } |
4b1ac34b NB |
148 | free(ap->super); |
149 | /* FIXME free ap */ | |
d9d4e469 NB |
150 | if (ap->spares || brief > 1) |
151 | printf("\n"); | |
cd29a5c8 | 152 | } |
64c4757e | 153 | } |
cd29a5c8 | 154 | return rv; |
64c4757e | 155 | } |