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1 | /* | |
2 | * mdadm - manage Linux "md" devices aka RAID arrays. | |
3 | * | |
4 | * Copyright (C) 2001-2012 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(struct mddev_dev *devlist, | |
34 | struct context *c, | |
35 | struct supertype *forcest) | |
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 | |
51 | * line including devices= | |
52 | * if devlist==NULL, use conf_get_devs() | |
53 | */ | |
54 | int fd; | |
55 | int rv = 0; | |
56 | int err = 0; | |
57 | ||
58 | struct array { | |
59 | struct supertype *st; | |
60 | struct mdinfo info; | |
61 | void *devs; | |
62 | struct array *next; | |
63 | int spares; | |
64 | } *arrays = NULL; | |
65 | ||
66 | for (; devlist ; devlist = devlist->next) { | |
67 | struct supertype *st; | |
68 | int have_container = 0; | |
69 | ||
70 | fd = dev_open(devlist->devname, O_RDONLY); | |
71 | if (fd < 0) { | |
72 | if (!c->scan) { | |
73 | pr_err("cannot open %s: %s\n", | |
74 | devlist->devname, strerror(errno)); | |
75 | rv = 1; | |
76 | } | |
77 | err = 1; | |
78 | } | |
79 | else { | |
80 | int container = 0; | |
81 | if (forcest) | |
82 | st = dup_super(forcest); | |
83 | else if (must_be_container(fd)) { | |
84 | /* might be a container */ | |
85 | st = super_by_fd(fd, NULL); | |
86 | container = 1; | |
87 | } else | |
88 | st = guess_super(fd); | |
89 | if (st) { | |
90 | err = 1; | |
91 | st->ignore_hw_compat = 1; | |
92 | if (!container) | |
93 | err = st->ss->load_super(st, fd, | |
94 | (c->brief||c->scan) ? NULL | |
95 | :devlist->devname); | |
96 | if (err && st->ss->load_container) { | |
97 | err = st->ss->load_container(st, fd, | |
98 | (c->brief||c->scan) ? NULL | |
99 | :devlist->devname); | |
100 | if (!err) | |
101 | have_container = 1; | |
102 | } | |
103 | st->ignore_hw_compat = 0; | |
104 | } else { | |
105 | if (!c->brief) { | |
106 | pr_err("No md superblock detected on %s.\n", devlist->devname); | |
107 | rv = 1; | |
108 | } | |
109 | err = 1; | |
110 | } | |
111 | close(fd); | |
112 | } | |
113 | if (err) | |
114 | continue; | |
115 | ||
116 | if (c->SparcAdjust) | |
117 | st->ss->update_super(st, NULL, "sparc2.2", | |
118 | devlist->devname, 0, 0, NULL); | |
119 | /* Ok, its good enough to try, though the checksum could be wrong */ | |
120 | ||
121 | if (c->brief && st->ss->brief_examine_super == NULL) { | |
122 | if (!c->scan) | |
123 | pr_err("No brief listing for %s on %s\n", | |
124 | st->ss->name, devlist->devname); | |
125 | } else if (c->brief) { | |
126 | struct array *ap; | |
127 | char *d; | |
128 | for (ap = arrays; ap; ap = ap->next) { | |
129 | if (st->ss == ap->st->ss && | |
130 | st->ss->compare_super(ap->st, st) == 0) | |
131 | break; | |
132 | } | |
133 | if (!ap) { | |
134 | ap = xmalloc(sizeof(*ap)); | |
135 | ap->devs = dl_head(); | |
136 | ap->next = arrays; | |
137 | ap->spares = 0; | |
138 | ap->st = st; | |
139 | arrays = ap; | |
140 | st->ss->getinfo_super(st, &ap->info, NULL); | |
141 | } else | |
142 | st->ss->getinfo_super(st, &ap->info, NULL); | |
143 | if (!have_container && | |
144 | !(ap->info.disk.state & (1<<MD_DISK_SYNC))) | |
145 | ap->spares++; | |
146 | d = dl_strdup(devlist->devname); | |
147 | dl_add(ap->devs, d); | |
148 | } else if (c->export) { | |
149 | if (st->ss->export_examine_super) | |
150 | st->ss->export_examine_super(st); | |
151 | st->ss->free_super(st); | |
152 | } else { | |
153 | printf("%s:\n",devlist->devname); | |
154 | st->ss->examine_super(st, c->homehost); | |
155 | st->ss->free_super(st); | |
156 | } | |
157 | } | |
158 | if (c->brief) { | |
159 | struct array *ap; | |
160 | for (ap = arrays; ap; ap = ap->next) { | |
161 | char sep='='; | |
162 | char *d; | |
163 | int newline = 0; | |
164 | ||
165 | ap->st->ss->brief_examine_super(ap->st, c->verbose > 0); | |
166 | if (ap->spares) | |
167 | newline += printf(" spares=%d", ap->spares); | |
168 | if (c->verbose > 0) { | |
169 | newline += printf(" devices"); | |
170 | for (d = dl_next(ap->devs); | |
171 | d != ap->devs; | |
172 | d=dl_next(d)) { | |
173 | printf("%c%s", sep, d); | |
174 | sep=','; | |
175 | } | |
176 | } | |
177 | if (ap->st->ss->brief_examine_subarrays) { | |
178 | if (newline) | |
179 | printf("\n"); | |
180 | ap->st->ss->brief_examine_subarrays(ap->st, c->verbose); | |
181 | } | |
182 | ap->st->ss->free_super(ap->st); | |
183 | /* FIXME free ap */ | |
184 | if (ap->spares || c->verbose > 0) | |
185 | printf("\n"); | |
186 | } | |
187 | } | |
188 | return rv; | |
189 | } | |
190 | ||
191 | int ExamineBadblocks(char *devname, int brief, struct supertype *forcest) | |
192 | { | |
193 | int fd = dev_open(devname, O_RDONLY); | |
194 | struct supertype *st = forcest; | |
195 | int err = 1; | |
196 | ||
197 | if (fd < 0) { | |
198 | pr_err("cannot open %s: %s\n", devname, strerror(errno)); | |
199 | return 1; | |
200 | } | |
201 | if (!st) | |
202 | st = guess_super(fd); | |
203 | if (!st) { | |
204 | if (!brief) | |
205 | pr_err("No md superblock detected on %s\n", devname); | |
206 | goto out; | |
207 | } | |
208 | if (!st->ss->examine_badblocks) { | |
209 | pr_err("%s metadata does not support badblocks\n", st->ss->name); | |
210 | goto out; | |
211 | } | |
212 | err = st->ss->load_super(st, fd, brief ? NULL : devname); | |
213 | if (err) | |
214 | goto out; | |
215 | err = st->ss->examine_badblocks(st, fd, devname); | |
216 | ||
217 | out: | |
218 | if (fd >= 0) | |
219 | close(fd); | |
220 | if (st) { | |
221 | st->ss->free_super(st); | |
222 | free(st); | |
223 | } | |
224 | return err; | |
225 | } |