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1 | /* | |
2 | * mdadm - manage Linux "md" devices aka RAID arrays. | |
3 | * | |
4 | * Copyright (C) 2001-2009 Neil Brown <neilb@suse.de> | |
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@suse.de> | |
23 | */ | |
24 | ||
25 | #include "mdadm.h" | |
26 | #include "dlink.h" | |
27 | ||
28 | #if ! defined(__BIG_ENDIAN) && ! defined(__LITTLE_ENDIAN) | |
29 | #error no endian defined | |
30 | #endif | |
31 | #include "md_u.h" | |
32 | #include "md_p.h" | |
33 | int Examine(mddev_dev_t devlist, int brief, int export, int scan, | |
34 | int SparcAdjust, struct supertype *forcest, | |
35 | char *homehost) | |
36 | { | |
37 | ||
38 | /* Read the raid superblock from a device and | |
39 | * display important content. | |
40 | * | |
41 | * If cannot be found, print reason: too small, bad magic | |
42 | * | |
43 | * Print: | |
44 | * version, ctime, level, size, raid+spare+ | |
45 | * prefered minor | |
46 | * uuid | |
47 | * | |
48 | * utime, state etc | |
49 | * | |
50 | * If (brief) gather devices for same array and just print a mdadm.conf line including devices= | |
51 | * if devlist==NULL, use conf_get_devs() | |
52 | */ | |
53 | int fd; | |
54 | int rv = 0; | |
55 | int err = 0; | |
56 | ||
57 | struct array { | |
58 | struct supertype *st; | |
59 | struct mdinfo info; | |
60 | void *devs; | |
61 | struct array *next; | |
62 | int spares; | |
63 | } *arrays = NULL; | |
64 | ||
65 | for (; devlist ; devlist=devlist->next) { | |
66 | struct supertype *st = forcest; | |
67 | ||
68 | fd = dev_open(devlist->devname, O_RDONLY); | |
69 | if (fd < 0) { | |
70 | if (!scan) { | |
71 | fprintf(stderr,Name ": cannot open %s: %s\n", | |
72 | devlist->devname, strerror(errno)); | |
73 | rv = 1; | |
74 | } | |
75 | err = 1; | |
76 | } | |
77 | else { | |
78 | if (!st) | |
79 | st = guess_super(fd); | |
80 | if (st) | |
81 | err = st->ss->load_super(st, fd, | |
82 | (brief||scan) ? NULL | |
83 | :devlist->devname); | |
84 | else { | |
85 | if (!brief) { | |
86 | fprintf(stderr, Name ": No md superblock detected on %s.\n", devlist->devname); | |
87 | rv = 1; | |
88 | } | |
89 | err = 1; | |
90 | } | |
91 | close(fd); | |
92 | } | |
93 | if (err) | |
94 | continue; | |
95 | ||
96 | if (SparcAdjust) | |
97 | st->ss->update_super(st, NULL, "sparc2.2", | |
98 | devlist->devname, 0, 0, NULL); | |
99 | /* Ok, its good enough to try, though the checksum could be wrong */ | |
100 | ||
101 | if (brief) { | |
102 | struct array *ap; | |
103 | char *d; | |
104 | for (ap=arrays; ap; ap=ap->next) { | |
105 | if (st->ss == ap->st->ss && | |
106 | st->ss->compare_super(ap->st, st)==0) | |
107 | break; | |
108 | } | |
109 | if (!ap) { | |
110 | ap = malloc(sizeof(*ap)); | |
111 | ap->devs = dl_head(); | |
112 | ap->next = arrays; | |
113 | ap->spares = 0; | |
114 | ap->st = st; | |
115 | arrays = ap; | |
116 | st->ss->getinfo_super(st, &ap->info); | |
117 | } else | |
118 | st->ss->getinfo_super(st, &ap->info); | |
119 | if (!(ap->info.disk.state & (1<<MD_DISK_SYNC))) | |
120 | ap->spares++; | |
121 | d = dl_strdup(devlist->devname); | |
122 | dl_add(ap->devs, d); | |
123 | } else if (export) { | |
124 | if (st->ss->export_examine_super) | |
125 | st->ss->export_examine_super(st); | |
126 | } else { | |
127 | printf("%s:\n",devlist->devname); | |
128 | st->ss->examine_super(st, homehost); | |
129 | st->ss->free_super(st); | |
130 | } | |
131 | } | |
132 | if (brief) { | |
133 | struct array *ap; | |
134 | for (ap=arrays; ap; ap=ap->next) { | |
135 | char sep='='; | |
136 | char *d; | |
137 | ap->st->ss->brief_examine_super(ap->st, brief > 1); | |
138 | if (ap->spares) printf(" spares=%d", ap->spares); | |
139 | if (brief > 1) { | |
140 | printf(" devices"); | |
141 | for (d=dl_next(ap->devs); d!= ap->devs; d=dl_next(d)) { | |
142 | printf("%c%s", sep, d); | |
143 | sep=','; | |
144 | } | |
145 | } | |
146 | ap->st->ss->free_super(ap->st); | |
147 | /* FIXME free ap */ | |
148 | if (ap->spares || brief > 1) | |
149 | printf("\n"); | |
150 | } | |
151 | } | |
152 | return rv; | |
153 | } |