2 * mdadm - manage Linux "md" devices aka RAID arrays.
4 * Copyright (C) 2001-2013 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>
28 #if ! defined(__BIG_ENDIAN) && ! defined(__LITTLE_ENDIAN)
29 #error no endian defined
33 int Examine(struct mddev_dev *devlist,
35 struct supertype *forcest)
38 /* Read the raid superblock from a device and
39 * display important content.
41 * If cannot be found, print reason: too small, bad magic
44 * version, ctime, level, size, raid+spare+
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()
66 for (; devlist ; devlist = devlist->next) {
68 int have_container = 0;
70 fd = dev_open(devlist->devname, O_RDONLY);
73 pr_err("cannot open %s: %s\n",
74 devlist->devname, strerror(errno));
82 st = dup_super(forcest);
83 else if (must_be_container(fd)) {
84 /* might be a container */
85 st = super_by_fd(fd, NULL);
91 st->ignore_hw_compat = 1;
93 err = st->ss->load_super(st, fd,
94 (c->brief||c->scan) ? NULL
96 if (err && st->ss->load_container) {
97 err = st->ss->load_container(st, fd,
98 (c->brief||c->scan) ? NULL
103 st->ignore_hw_compat = 0;
106 pr_err("No md superblock detected on %s.\n", devlist->devname);
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 */
121 if (c->brief && st->ss->brief_examine_super == NULL) {
123 pr_err("No brief listing for %s on %s\n",
124 st->ss->name, devlist->devname);
125 } else if (c->brief) {
128 for (ap = arrays; ap; ap = ap->next) {
129 if (st->ss == ap->st->ss &&
130 st->ss->compare_super(ap->st, st) == 0)
134 ap = xmalloc(sizeof(*ap));
135 ap->devs = dl_head();
140 st->ss->getinfo_super(st, &ap->info, NULL);
142 st->ss->getinfo_super(st, &ap->info, NULL);
143 if (!have_container &&
144 !(ap->info.disk.state & (1<<MD_DISK_SYNC)))
146 d = dl_strdup(devlist->devname);
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);
153 printf("%s:\n",devlist->devname);
154 st->ss->examine_super(st, c->homehost);
155 st->ss->free_super(st);
160 for (ap = arrays; ap; ap = ap->next) {
165 ap->st->ss->brief_examine_super(ap->st, c->verbose > 0);
167 newline += printf(" spares=%d", ap->spares);
168 if (c->verbose > 0) {
169 newline += printf(" devices");
170 for (d = dl_next(ap->devs);
173 printf("%c%s", sep, d);
177 if (ap->st->ss->brief_examine_subarrays) {
180 ap->st->ss->brief_examine_subarrays(ap->st, c->verbose);
182 ap->st->ss->free_super(ap->st);
184 if (ap->spares || c->verbose > 0)
191 int ExamineBadblocks(char *devname, int brief, struct supertype *forcest)
193 int fd = dev_open(devname, O_RDONLY);
194 struct supertype *st = forcest;
198 pr_err("cannot open %s: %s\n", devname, strerror(errno));
202 st = guess_super(fd);
205 pr_err("No md superblock detected on %s\n", devname);
208 if (!st->ss->examine_badblocks) {
209 pr_err("%s metadata does not support badblocks\n", st->ss->name);
212 err = st->ss->load_super(st, fd, brief ? NULL : devname);
215 err = st->ss->examine_badblocks(st, fd, devname);
221 st->ss->free_super(st);