/*
* mdadm - manage Linux "md" devices aka RAID arrays.
*
- * Copyright (C) 2001-2012 Neil Brown <neilb@suse.de>
+ * Copyright (C) 2001-2013 Neil Brown <neilb@suse.de>
*
*
* This program is free software; you can redistribute it and/or modify
static int is_member_busy(char *metadata_version)
{
/* check if the given member array is active */
- struct mdstat_ent *mdstat = mdstat_read(1, 0);
+ struct mdstat_ent *mdstat = mdstat_read(0, 0);
struct mdstat_ent *ent;
int busy = 0;
return 0;
}
if (ident->raid_disks != UnSet &&
+ content->array.raid_disks != 0 && /* metadata doesn't know how many to expect */
ident->raid_disks!= content->array.raid_disks) {
if (devname)
pr_err("%s requires wrong number of drives.\n",
if (tmpdev->used > 1)
continue;
- if (ident->devices &&
- !match_oneof(ident->devices, devname)) {
+ if (ident->container) {
+ if (ident->container[0] == '/' &&
+ !same_dev(ident->container, devname)) {
+ if (report_mismatch)
+ pr_err("%s is not the container required (%s)\n",
+ devname, ident->container);
+ continue;
+ }
+ } else if (ident->devices &&
+ !match_oneof(ident->devices, devname)) {
+ /* Note that we ignore the "device=" identifier if a
+ * "container=" is given. Checking both is unnecessarily
+ * complicated.
+ */
if (report_mismatch)
pr_err("%s is not one of %s\n", devname, ident->devices);
continue;
}
close(dfd);
- if (ident->container) {
- if (ident->container[0] == '/' &&
- !same_dev(ident->container, devname)) {
+ if (ident->container && ident->container[0] != '/') {
+ /* we have a uuid */
+ int uuid[4];
+
+ content = *contentp;
+ tst->ss->getinfo_super(tst, content, NULL);
+
+ if (!parse_uuid(ident->container, uuid) ||
+ !same_uuid(content->uuid, uuid, tst->ss->swapuuid)) {
if (report_mismatch)
- pr_err("%s is not the container required (%s)\n",
- devname, ident->container);
+ pr_err("%s has wrong UUID to be required container\n",
+ devname);
goto loop;
}
- if (ident->container[0] != '/') {
- /* we have a uuid */
- int uuid[4];
-
- content = *contentp;
- tst->ss->getinfo_super(tst, content, NULL);
-
- if (!parse_uuid(ident->container, uuid) ||
- !same_uuid(content->uuid, uuid, tst->ss->swapuuid)) {
- if (report_mismatch)
- pr_err("%s has wrong UUID to be required container\n",
- devname);
- goto loop;
- }
- }
}
/* It is worth looking inside this container.
*/
};
static int load_devices(struct devs *devices, char *devmap,
- struct mddev_ident *ident, struct supertype *st,
+ struct mddev_ident *ident, struct supertype **stp,
struct mddev_dev *devlist, struct context *c,
struct mdinfo *content,
int mdfd, char *mddev,
#ifndef MDASSEMBLE
int bitmap_done = 0;
#endif
- int most_recent = 0;
+ int most_recent = -1;
int bestcnt = 0;
int *best = *bestp;
+ struct supertype *st = *stp;
for (tmpdev = devlist; tmpdev; tmpdev=tmpdev->next) {
char *devname = tmpdev->devname;
struct stat stb;
+ struct supertype *tst;
int i;
if (tmpdev->used != 1)
int dfd;
/* prepare useful information in info structures */
struct stat stb2;
- struct supertype *tst;
int err;
fstat(mdfd, &stb2);
close(mdfd);
free(devices);
free(devmap);
+ tst->ss->free_super(tst);
+ free(tst);
+ *stp = st;
return -1;
}
tst->ss->getinfo_super(tst, content, devmap + devcnt * content->array.raid_disks);
close(dfd);
free(devices);
free(devmap);
+ *stp = st;
return -1;
}
if (strcmp(c->update, "uuid")==0 &&
else
bitmap_done = 1;
}
- tst->ss->free_super(tst);
} else
#endif
{
- struct supertype *tst = dup_super(st);
- int dfd;
- dfd = dev_open(devname,
- tmpdev->disposition == 'I'
- ? O_RDWR : (O_RDWR|O_EXCL));
+ int dfd = dev_open(devname,
+ tmpdev->disposition == 'I'
+ ? O_RDWR : (O_RDWR|O_EXCL));
+ tst = dup_super(st);
if (dfd < 0 || tst->ss->load_super(tst, dfd, NULL) != 0) {
pr_err("cannot re-read metadata from %s - aborting\n",
close(mdfd);
free(devices);
free(devmap);
+ tst->ss->free_super(tst);
+ free(tst);
+ *stp = st;
return -1;
}
tst->ss->getinfo_super(tst, content, devmap + devcnt * content->array.raid_disks);
- tst->ss->free_super(tst);
close(dfd);
}
devices[devcnt].i.disk.major = major(stb.st_rdev);
devices[devcnt].i.disk.minor = minor(stb.st_rdev);
- if (devices[devcnt].i.events
- > devices[most_recent].i.events &&
- devices[devcnt].i.disk.state == 6)
+ if (devices[devcnt].i.disk.state == 6) {
+ if (most_recent < 0 ||
+ devices[devcnt].i.events
+ > devices[most_recent].i.events) {
+ struct supertype *tmp = tst;
+ tst = st;
+ st = tmp;
most_recent = devcnt;
+ }
+ }
+ tst->ss->free_super(tst);
+ free(tst);
if (content->array.level == LEVEL_MULTIPATH)
/* with multipath, the raid_disk from the superblock is meaningless */
close(mdfd);
free(devices);
free(devmap);
+ *stp = st;
return -1;
}
if (best[i] == -1
}
devcnt++;
}
- *most_recentp = most_recent;
+ if (most_recent >= 0)
+ *most_recentp = most_recent;
*bestcntp = bestcnt;
*bestp = best;
+ *stp = st;
return devcnt;
}
int chosen_drive = -1;
int i;
- for (i = 0; i < content->array.raid_disks && i < bestcnt; i++) {
+ for (i = 0;
+ i < content->array.raid_disks * 2 && i < bestcnt;
+ i += 2) {
int j = best[i];
if (j>=0 &&
!devices[j].uptodate &&
/* If there are any other drives of the same vintage,
* add them in as well. We can't lose and we might gain
*/
- for (i = 0; i < content->array.raid_disks && i < bestcnt ; i++) {
+ for (i = 0;
+ i < content->array.raid_disks * 2 && i < bestcnt ;
+ i += 2) {
int j = best[i];
if (j >= 0 &&
!devices[j].uptodate &&
struct context *c,
int clean, char *avail,
int start_partial_ok,
+ int err_ok,
int was_forced
)
{
unsigned int req_cnt;
rv = set_array_info(mdfd, st, content);
- if (rv) {
+ if (rv && !err_ok) {
pr_err("failed to set array info for %s: %s\n",
mddev, strerror(errno));
return 1;
}
st->ss->free_super(st);
sysfs_uevent(content, "change");
+ if (err_ok && okcnt < (unsigned)content->array.raid_disks)
+ /* Was partial, is still partial, so signal an error
+ * to ensure we don't retry */
+ return 1;
return 0;
}
if (content->reshape_active &&
!(content->reshape_active & RESHAPE_NO_BACKUP) &&
content->delta_disks <= 0) {
+ if (!c->backup_file) {
+ pr_err("%s: Need a backup file to complete reshape of this array.\n",
+ mddev);
+ pr_err("Please provided one with \"--backup-file=...\"\n");
+ if (c->update &&
+ strcmp(c->update, "revert-reshape") == 0)
+ pr_err("(Don't specify --update=revert-reshape again, that part succeeded.)\n");
+ return 1;
+ }
rv = sysfs_set_str(content, NULL,
"array_state", "readonly");
if (rv == 0)
} else
#endif
rv = ioctl(mdfd, RUN_ARRAY, NULL);
+ reopen_mddev(mdfd); /* drop O_EXCL */
if (rv == 0) {
if (c->verbose >= 0) {
pr_err("%s has been started with %d drive%s",
}
}
}
- printf("l=%d o=%d r=%d w=%d\n",content->array.level,
- okcnt, content->array.raid_disks, was_forced);
if (content->array.level == 6 &&
okcnt + 1 == (unsigned)content->array.raid_disks &&
was_forced) {
inargv, auto_assem);
if (num_devs < 0)
return 1;
-
+
if (!st || !st->sb || !content)
return 2;
/* This is a member of a container. Try starting the array. */
int err;
err = assemble_container_content(st, mdfd, content, c,
- chosen_name);
+ chosen_name, NULL);
close(mdfd);
return err;
}
/* Ok, no bad inconsistancy, we can try updating etc */
devices = xcalloc(num_devs, sizeof(*devices));
devmap = xcalloc(num_devs, content->array.raid_disks);
- devcnt = load_devices(devices, devmap, ident, st, devlist,
+ devcnt = load_devices(devices, devmap, ident, &st, devlist,
c, content, mdfd, mddev,
&most_recent, &bestcnt, &best, inargv);
if (devcnt < 0)
/* If this device thinks that 'most_recent' has failed, then
* we must reject this device.
*/
- if (j != most_recent &&
+ if (j != most_recent && !c->force &&
content->array.raid_disks > 0 &&
devices[most_recent].i.disk.raid_disk >= 0 &&
devmap[j * content->array.raid_disks + devices[most_recent].i.disk.raid_disk] == 0) {
*/
chosen_drive = -1;
st->ss->free_super(st);
- for (i=0; chosen_drive < 0 && i<bestcnt; i++) {
+ for (i=0; chosen_drive < 0 && i<bestcnt; i+=2) {
int j = best[i];
int fd;
chosen_drive, devices, okcnt, sparecnt,
rebuilding_cnt,
c,
- clean, avail, start_partial_ok, was_forced);
+ clean, avail, start_partial_ok,
+ pre_exist != NULL,
+ was_forced);
if (rv == 1 && !pre_exist)
ioctl(mdfd, STOP_ARRAY, NULL);
free(devices);
#ifndef MDASSEMBLE
int assemble_container_content(struct supertype *st, int mdfd,
struct mdinfo *content, struct context *c,
- char *chosen_name)
+ char *chosen_name, int *result)
{
struct mdinfo *dev, *sra;
int working = 0, preexist = 0;
struct map_ent *map = NULL;
int old_raid_disks;
int start_reshape;
+ char *avail = NULL;
+ int err;
sysfs_init(content, mdfd, NULL);
if (sra)
sysfs_free(sra);
old_raid_disks = content->array.raid_disks - content->delta_disks;
- for (dev = content->devs; dev; dev = dev->next)
+ avail = xcalloc(content->array.raid_disks, 1);
+ for (dev = content->devs; dev; dev = dev->next) {
+ if (dev->disk.raid_disk >= 0)
+ avail[dev->disk.raid_disk] = 1;
if (sysfs_add_disk(content, dev, 1) == 0) {
if (dev->disk.raid_disk >= old_raid_disks &&
content->reshape_active)
working++;
} else if (errno == EEXIST)
preexist++;
- if (working + expansion == 0)
+ }
+ if (working + expansion == 0 && c->runstop <= 0) {
+ free(avail);
return 1;/* Nothing new, don't try to start */
-
+ }
map_update(&map, fd2devnm(mdfd),
content->text_version,
content->uuid, chosen_name);
- if (c->runstop > 0 ||
- (working + preexist + expansion) >=
- content->array.working_disks) {
- int err;
-
- if (start_reshape) {
- int spare = content->array.raid_disks + expansion;
- if (restore_backup(st, content,
- working,
- spare, c->backup_file, c->verbose) == 1)
- return 1;
-
- err = sysfs_set_str(content, NULL,
- "array_state", "readonly");
- if (err)
- return 1;
-
- if (st->ss->external) {
- if (!mdmon_running(st->container_devnm))
- start_mdmon(st->container_devnm);
- ping_monitor(st->container_devnm);
- if (mdmon_running(st->container_devnm) &&
- st->update_tail == NULL)
- st->update_tail = &st->updates;
- }
-
- err = Grow_continue(mdfd, st, content, c->backup_file,
- c->freeze_reshape);
- } else switch(content->array.level) {
- case LEVEL_LINEAR:
- case LEVEL_MULTIPATH:
- case 0:
- err = sysfs_set_str(content, NULL, "array_state",
- c->readonly ? "readonly" : "active");
- break;
- default:
- err = sysfs_set_str(content, NULL, "array_state",
- "readonly");
- /* start mdmon if needed. */
- if (!err) {
- if (!mdmon_running(st->container_devnm))
- start_mdmon(st->container_devnm);
- ping_monitor(st->container_devnm);
- }
- break;
- }
- if (!err)
- sysfs_set_safemode(content, content->safe_mode_delay);
-
- /* Block subarray here if it is not reshaped now
- * It has be blocked a little later to allow mdmon to switch in
- * in to R/W state
- */
- if (st->ss->external && content->recovery_blocked &&
- !start_reshape)
- block_subarray(content);
- if (c->verbose >= 0) {
- if (err)
- pr_err("array %s now has %d device%s",
- chosen_name, working + preexist,
- working + preexist == 1 ? "":"s");
- else
- pr_err("Started %s with %d device%s",
- chosen_name, working + preexist,
- working + preexist == 1 ? "":"s");
+ if (enough(content->array.level, content->array.raid_disks,
+ content->array.layout, content->array.state & 1, avail) == 0) {
+ if (c->export && result)
+ *result |= INCR_NO;
+ else if (c->verbose >= 0) {
+ pr_err("%s assembled with %d device%s",
+ chosen_name, preexist + working,
+ preexist + working == 1 ? "":"s");
if (preexist)
fprintf(stderr, " (%d new)", working);
- if (expansion)
- fprintf(stderr, " ( + %d for expansion)",
- expansion);
- fprintf(stderr, "\n");
+ fprintf(stderr, " but not started\n");
}
- if (!err)
- wait_for(chosen_name, mdfd);
- return err;
- /* FIXME should have an O_EXCL and wait for read-auto */
- } else {
- if (c->verbose >= 0) {
+ free(avail);
+ return 1;
+ }
+ free(avail);
+
+ if (c->runstop <= 0 &&
+ (working + preexist + expansion) <
+ content->array.working_disks) {
+ if (c->export && result)
+ *result |= INCR_UNSAFE;
+ else if (c->verbose >= 0) {
pr_err("%s assembled with %d device%s",
chosen_name, preexist + working,
preexist + working == 1 ? "":"s");
if (preexist)
fprintf(stderr, " (%d new)", working);
- fprintf(stderr, " but not started\n");
+ fprintf(stderr, " but not safe to start\n");
}
return 1;
}
+
+
+ if (start_reshape) {
+ int spare = content->array.raid_disks + expansion;
+ if (restore_backup(st, content,
+ working,
+ spare, c->backup_file, c->verbose) == 1)
+ return 1;
+
+ err = sysfs_set_str(content, NULL,
+ "array_state", "readonly");
+ if (err)
+ return 1;
+
+ if (st->ss->external) {
+ if (!mdmon_running(st->container_devnm))
+ start_mdmon(st->container_devnm);
+ ping_monitor(st->container_devnm);
+ if (mdmon_running(st->container_devnm) &&
+ st->update_tail == NULL)
+ st->update_tail = &st->updates;
+ }
+
+ err = Grow_continue(mdfd, st, content, c->backup_file,
+ c->freeze_reshape);
+ } else switch(content->array.level) {
+ case LEVEL_LINEAR:
+ case LEVEL_MULTIPATH:
+ case 0:
+ err = sysfs_set_str(content, NULL, "array_state",
+ c->readonly ? "readonly" : "active");
+ break;
+ default:
+ err = sysfs_set_str(content, NULL, "array_state",
+ "readonly");
+ /* start mdmon if needed. */
+ if (!err) {
+ if (!mdmon_running(st->container_devnm))
+ start_mdmon(st->container_devnm);
+ ping_monitor(st->container_devnm);
+ }
+ break;
+ }
+ if (!err)
+ sysfs_set_safemode(content, content->safe_mode_delay);
+
+ /* Block subarray here if it is not reshaped now
+ * It has be blocked a little later to allow mdmon to switch in
+ * in to R/W state
+ */
+ if (st->ss->external && content->recovery_blocked &&
+ !start_reshape)
+ block_subarray(content);
+
+ if (c->export && result) {
+ if (err)
+ *result |= INCR_NO;
+ else
+ *result |= INCR_YES;
+ } else if (c->verbose >= 0) {
+ if (err)
+ pr_err("array %s now has %d device%s",
+ chosen_name, working + preexist,
+ working + preexist == 1 ? "":"s");
+ else
+ pr_err("Started %s with %d device%s",
+ chosen_name, working + preexist,
+ working + preexist == 1 ? "":"s");
+ if (preexist)
+ fprintf(stderr, " (%d new)", working);
+ if (expansion)
+ fprintf(stderr, " ( + %d for expansion)",
+ expansion);
+ fprintf(stderr, "\n");
+ }
+ if (!err)
+ wait_for(chosen_name, mdfd);
+ return err;
+ /* FIXME should have an O_EXCL and wait for read-auto */
}
#endif
-
projects / thirdparty / mdadm.git / blobdiff