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authorDaniel Baumann <daniel.baumann@progress-linux.org>2024-05-04 17:42:59 +0000
committerDaniel Baumann <daniel.baumann@progress-linux.org>2024-05-04 17:42:59 +0000
commit0c7a6eb5ccace1d8e9f7b301f6a61a7d3f016369 (patch)
tree80a778fbd7bb3c7858cfac572df1cb08cfa4f988 /Examine.c
parentInitial commit. (diff)
downloadmdadm-0c7a6eb5ccace1d8e9f7b301f6a61a7d3f016369.tar.xz
mdadm-0c7a6eb5ccace1d8e9f7b301f6a61a7d3f016369.zip
Adding upstream version 4.2.upstream/4.2upstream
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to 'Examine.c')
-rw-r--r--Examine.c228
1 files changed, 228 insertions, 0 deletions
diff --git a/Examine.c b/Examine.c
new file mode 100644
index 0000000..9574a3c
--- /dev/null
+++ b/Examine.c
@@ -0,0 +1,228 @@
+/*
+ * mdadm - manage Linux "md" devices aka RAID arrays.
+ *
+ * Copyright (C) 2001-2013 Neil Brown <neilb@suse.de>
+ *
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
+ *
+ * Author: Neil Brown
+ * Email: <neilb@suse.de>
+ */
+
+#include "mdadm.h"
+#include "dlink.h"
+
+#if ! defined(__BIG_ENDIAN) && ! defined(__LITTLE_ENDIAN)
+#error no endian defined
+#endif
+#include "md_u.h"
+#include "md_p.h"
+int Examine(struct mddev_dev *devlist,
+ struct context *c,
+ struct supertype *forcest)
+{
+
+ /* Read the raid superblock from a device and
+ * display important content.
+ *
+ * If cannot be found, print reason: too small, bad magic
+ *
+ * Print:
+ * version, ctime, level, size, raid+spare+
+ * prefered minor
+ * uuid
+ *
+ * utime, state etc
+ *
+ * If (brief) gather devices for same array and just print a mdadm.conf
+ * line including devices=
+ * if devlist==NULL, use conf_get_devs()
+ */
+ int fd;
+ int rv = 0;
+
+ struct array {
+ struct supertype *st;
+ struct mdinfo info;
+ void *devs;
+ struct array *next;
+ int spares;
+ } *arrays = NULL;
+
+ for (; devlist ; devlist = devlist->next) {
+ struct supertype *st;
+ int have_container = 0;
+ int err = 0;
+ int container = 0;
+
+ fd = dev_open(devlist->devname, O_RDONLY);
+ if (fd < 0) {
+ if (!c->scan) {
+ pr_err("cannot open %s: %s\n",
+ devlist->devname, strerror(errno));
+ rv = 1;
+ }
+ continue;
+ }
+
+ if (forcest)
+ st = dup_super(forcest);
+ else if (must_be_container(fd)) {
+ /* might be a container */
+ st = super_by_fd(fd, NULL);
+ container = 1;
+ } else
+ st = guess_super(fd);
+ if (st) {
+ err = 1;
+ st->ignore_hw_compat = 1;
+ if (!container)
+ err = st->ss->load_super(st, fd,
+ (c->brief||c->scan) ? NULL
+ :devlist->devname);
+ if (err && st->ss->load_container) {
+ err = st->ss->load_container(st, fd,
+ (c->brief||c->scan) ? NULL
+ :devlist->devname);
+ if (!err)
+ have_container = 1;
+ }
+ st->ignore_hw_compat = 0;
+ } else {
+ if (!c->brief) {
+ pr_err("No md superblock detected on %s.\n", devlist->devname);
+ rv = 1;
+ }
+ err = 1;
+ }
+ close(fd);
+
+ if (err) {
+ if (st)
+ st->ss->free_super(st);
+ continue;
+ }
+
+ if (c->SparcAdjust)
+ st->ss->update_super(st, NULL, "sparc2.2",
+ devlist->devname, 0, 0, NULL);
+ /* Ok, its good enough to try, though the checksum could be wrong */
+
+ if (c->brief && st->ss->brief_examine_super == NULL) {
+ if (!c->scan)
+ pr_err("No brief listing for %s on %s\n",
+ st->ss->name, devlist->devname);
+ } else if (c->brief) {
+ struct array *ap;
+ char *d;
+ for (ap = arrays; ap; ap = ap->next) {
+ if (st->ss == ap->st->ss &&
+ st->ss->compare_super(ap->st, st, 0) == 0)
+ break;
+ }
+ if (!ap) {
+ ap = xmalloc(sizeof(*ap));
+ ap->devs = dl_head();
+ ap->next = arrays;
+ ap->spares = 0;
+ ap->st = st;
+ arrays = ap;
+ st->ss->getinfo_super(st, &ap->info, NULL);
+ } else
+ st->ss->getinfo_super(st, &ap->info, NULL);
+ if (!have_container &&
+ !(ap->info.disk.state & (1<<MD_DISK_SYNC)))
+ ap->spares++;
+ d = dl_strdup(devlist->devname);
+ dl_add(ap->devs, d);
+ } else if (c->export) {
+ if (st->ss->export_examine_super)
+ st->ss->export_examine_super(st);
+ st->ss->free_super(st);
+ } else {
+ printf("%s:\n",devlist->devname);
+ st->ss->examine_super(st, c->homehost);
+ st->ss->free_super(st);
+ }
+ }
+ if (c->brief) {
+ struct array *ap;
+ for (ap = arrays; ap; ap = ap->next) {
+ char sep='=';
+ char *d;
+ int newline = 0;
+
+ ap->st->ss->brief_examine_super(ap->st, c->verbose > 0);
+ if (ap->spares && !ap->st->ss->external)
+ newline += printf(" spares=%d", ap->spares);
+ if (c->verbose > 0) {
+ newline += printf(" devices");
+ for (d = dl_next(ap->devs);
+ d != ap->devs;
+ d=dl_next(d)) {
+ printf("%c%s", sep, d);
+ sep=',';
+ }
+ }
+ if (ap->st->ss->brief_examine_subarrays) {
+ if (newline)
+ printf("\n");
+ ap->st->ss->brief_examine_subarrays(ap->st, c->verbose);
+ }
+ ap->st->ss->free_super(ap->st);
+ /* FIXME free ap */
+ if (ap->spares || c->verbose > 0)
+ printf("\n");
+ }
+ }
+ return rv;
+}
+
+int ExamineBadblocks(char *devname, int brief, struct supertype *forcest)
+{
+ int fd = dev_open(devname, O_RDONLY);
+ struct supertype *st = forcest;
+ int err = 1;
+
+ if (fd < 0) {
+ pr_err("cannot open %s: %s\n", devname, strerror(errno));
+ return 1;
+ }
+ if (!st)
+ st = guess_super(fd);
+ if (!st) {
+ if (!brief)
+ pr_err("No md superblock detected on %s\n", devname);
+ goto out;
+ }
+ if (!st->ss->examine_badblocks) {
+ pr_err("%s metadata does not support badblocks\n", st->ss->name);
+ goto out;
+ }
+ err = st->ss->load_super(st, fd, brief ? NULL : devname);
+ if (err)
+ goto out;
+ err = st->ss->examine_badblocks(st, fd, devname);
+
+out:
+ if (fd >= 0)
+ close(fd);
+ if (st) {
+ st->ss->free_super(st);
+ free(st);
+ }
+ return err;
+}