/*
* mdadm - manage Linux "md" devices aka RAID arrays.
*
- * Copyright (C) 2001-2009 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;
same_uuid(content->uuid, ident->uuid, tst->ss->swapuuid)==0 &&
memcmp(content->uuid, uuid_zero, sizeof(int[4])) != 0) {
if (devname)
- fprintf(stderr, Name ": %s has wrong uuid.\n",
- devname);
+ pr_err("%s has wrong uuid.\n", devname);
return 0;
}
if (ident->name[0] && (!update || strcmp(update, "name")!= 0) &&
name_matches(content->name, ident->name, homehost)==0) {
if (devname)
- fprintf(stderr, Name ": %s has wrong name.\n",
- devname);
+ pr_err("%s has wrong name.\n", devname);
return 0;
}
if (ident->super_minor != UnSet &&
ident->super_minor != content->array.md_minor) {
if (devname)
- fprintf(stderr, Name ": %s has wrong super-minor.\n",
- devname);
+ pr_err("%s has wrong super-minor.\n",
+ devname);
return 0;
}
if (ident->level != UnSet &&
ident->level != content->array.level) {
if (devname)
- fprintf(stderr, Name ": %s has wrong raid level.\n",
- devname);
+ pr_err("%s has wrong raid level.\n",
+ devname);
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)
- fprintf(stderr, Name ": %s requires wrong number of drives.\n",
- devname);
+ pr_err("%s requires wrong number of drives.\n",
+ devname);
return 0;
}
if (ident->member && ident->member[0]) {
char *s = strchr(content->text_version+1, '/');
if (s == NULL) {
if (devname)
- fprintf(stderr, Name ": %s is not a container and one is required.\n",
- devname);
+ pr_err("%s is not a container and one is required.\n",
+ devname);
return 0;
} else if (strcmp(ident->member, s+1) != 0) {
if (devname)
- fprintf(stderr, Name ": skipping wrong member %s is %s\n",
- content->text_version, devname);
+ pr_err("skipping wrong member %s is %s\n",
+ content->text_version, devname);
return 0;
}
}
return 1;
}
-
-int Assemble(struct supertype *st, char *mddev,
- struct mddev_ident *ident,
- struct mddev_dev *devlist,
- char *backup_file, int invalid_backup,
- int readonly, int runstop,
- char *update, char *homehost, int require_homehost,
- int verbose, int force, int freeze_reshape)
+static int select_devices(struct mddev_dev *devlist,
+ struct mddev_ident *ident,
+ struct supertype **stp,
+ struct mdinfo **contentp,
+ struct context *c,
+ int inargv, int auto_assem)
{
- /*
- * The task of Assemble is to find a collection of
- * devices that should (according to their superblocks)
- * form an array, and to give this collection to the MD driver.
- * In Linux-2.4 and later, this involves submitting a
- * SET_ARRAY_INFO ioctl with no arg - to prepare
- * the array - and then submit a number of
- * ADD_NEW_DISK ioctls to add disks into
- * the array. Finally RUN_ARRAY might
- * be submitted to start the array.
- *
- * Much of the work of Assemble is in finding and/or
- * checking the disks to make sure they look right.
- *
- * If mddev is not set, then scan must be set and we
- * read through the config file for dev+uuid mapping
- * We recurse, setting mddev, for each device that
- * - isn't running
- * - has a valid uuid (or any uuid if !uuidset)
- *
- * If mddev is set, we try to determine state of md.
- * check version - must be at least 0.90.0
- * check kernel version. must be at least 2.4.
- * If not, we can possibly fall back on START_ARRAY
- * Try to GET_ARRAY_INFO.
- * If possible, give up
- * If not, try to STOP_ARRAY just to make sure
- *
- * If !uuidset and scan, look in conf-file for uuid
- * If not found, give up
- * If !devlist and scan and uuidset, get list of devs from conf-file
- *
- * For each device:
- * Check superblock - discard if bad
- * Check uuid (set if we don't have one) - discard if no match
- * Check superblock similarity if we have a superblock - discard if different
- * Record events, devicenum
- * This should give us a list of devices for the array
- * We should collect the most recent event number
- *
- * Count disks with recent enough event count
- * While force && !enough disks
- * Choose newest rejected disks, update event count
- * mark clean and rewrite superblock
- * If recent kernel:
- * SET_ARRAY_INFO
- * foreach device with recent events : ADD_NEW_DISK
- * if runstop == 1 || "enough" disks and runstop==0 -> RUN_ARRAY
- * If old kernel:
- * Check the device numbers in superblock are right
- * update superblock if any changes
- * START_ARRAY
- *
- */
- int mdfd;
- int clean;
- int auto_assem = (mddev == NULL && !ident->uuid_set &&
- ident->super_minor == UnSet && ident->name[0] == 0
- && (ident->container == NULL || ident->member == NULL));
- int old_linux = 0;
- int vers = vers; /* Keep gcc quite - it really is initialised */
- struct {
- char *devname;
- int uptodate; /* set once we decide that this device is as
- * recent as everything else in the array.
- */
- struct mdinfo i;
- } *devices;
- char *devmap;
- int *best = NULL; /* indexed by raid_disk */
- int bestcnt = 0;
- int devcnt = 0;
- unsigned int okcnt, sparecnt, rebuilding_cnt;
- unsigned int req_cnt;
- int i;
- int most_recent = 0;
- int chosen_drive;
- int change = 0;
- int inargv = 0;
- int report_missmatch;
-#ifndef MDASSEMBLE
- int bitmap_done;
-#endif
- int start_partial_ok = (runstop >= 0) &&
- (force || devlist==NULL || auto_assem);
- unsigned int num_devs;
struct mddev_dev *tmpdev;
- struct mdinfo info;
+ int num_devs;
+ struct supertype *st = *stp;
struct mdinfo *content = NULL;
- char *avail;
- int nextspare = 0;
- char *name = NULL;
- int trustworthy;
- char chosen_name[1024];
+ int report_mismatch = ((inargv && c->verbose >= 0) || c->verbose > 0);
struct domainlist *domains = NULL;
- if (get_linux_version() < 2004000)
- old_linux = 1;
-
- /*
- * If any subdevs are listed, then any that don't
- * match ident are discarded. Remainder must all match and
- * become the array.
- * If no subdevs, then we scan all devices in the config file, but
- * there must be something in the identity
- */
-
- if (!devlist &&
- ident->uuid_set == 0 &&
- (ident->super_minor < 0 || ident->super_minor == UnSet) &&
- ident->name[0] == 0 &&
- (ident->container == NULL || ident->member == NULL) &&
- ident->devices == NULL) {
- fprintf(stderr, Name ": No identity information available for %s - cannot assemble.\n",
- mddev ? mddev : "further assembly");
- return 1;
- }
-
- if (devlist == NULL)
- devlist = conf_get_devs();
- else if (mddev)
- inargv = 1;
-
- report_missmatch = ((inargv && verbose >= 0) || verbose > 0);
- try_again:
- /* We come back here when doing auto-assembly and attempting some
- * set of devices failed. Those are now marked as ->used==2 and
- * we ignore them and try again
- */
-
tmpdev = devlist; num_devs = 0;
while (tmpdev) {
if (tmpdev->used)
tmpdev->used = 2;
else
num_devs++;
+ tmpdev->disposition = 0;
tmpdev = tmpdev->next;
}
- if (!st && ident->st) st = ident->st;
-
- if (verbose>0)
- fprintf(stderr, Name ": looking for devices for %s\n",
- mddev ? mddev : "further assembly");
-
/* first walk the list of devices to find a consistent set
* that match the criterea, if that is possible.
* We flag the ones we like with 'used'.
struct dev_policy *pol = NULL;
int found_container = 0;
- if (tmpdev->used > 1) continue;
+ if (tmpdev->used > 1)
+ continue;
- if (ident->devices &&
- !match_oneof(ident->devices, devname)) {
- if (report_missmatch)
- fprintf(stderr, Name ": %s is not one of %s\n", devname, ident->devices);
+ 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;
}
tst = dup_super(st);
- dfd = dev_open(devname, O_RDONLY|O_EXCL);
+ dfd = dev_open(devname, O_RDONLY);
if (dfd < 0) {
- if (report_missmatch)
- fprintf(stderr, Name ": cannot open device %s: %s\n",
- devname, strerror(errno));
+ if (report_mismatch)
+ pr_err("cannot open device %s: %s\n",
+ devname, strerror(errno));
tmpdev->used = 2;
} else if (fstat(dfd, &stb)< 0) {
/* Impossible! */
- fprintf(stderr, Name ": fstat failed for %s: %s\n",
- devname, strerror(errno));
+ pr_err("fstat failed for %s: %s\n",
+ devname, strerror(errno));
tmpdev->used = 2;
} else if ((stb.st_mode & S_IFMT) != S_IFBLK) {
- fprintf(stderr, Name ": %s is not a block device.\n",
- devname);
+ pr_err("%s is not a block device.\n",
+ devname);
tmpdev->used = 2;
} else if (must_be_container(dfd)) {
if (st) {
/* already found some components, this cannot
* be another one.
*/
- if (report_missmatch)
- fprintf(stderr, Name ": %s is a container, but we are looking for components\n",
- devname);
+ if (report_mismatch)
+ pr_err("%s is a container, but we are looking for components\n",
+ devname);
tmpdev->used = 2;
#if !defined(MDASSEMBLE) || defined(MDASSEMBLE) && defined(MDASSEMBLE_AUTO)
} if (!tst && (tst = super_by_fd(dfd, NULL)) == NULL) {
- if (report_missmatch)
- fprintf(stderr, Name ": not a recognisable container: %s\n",
- devname);
+ if (report_mismatch)
+ pr_err("not a recognisable container: %s\n",
+ devname);
tmpdev->used = 2;
#endif
} else if (!tst->ss->load_container
|| tst->ss->load_container(tst, dfd, NULL)) {
- if (report_missmatch)
- fprintf(stderr, Name ": no correct container type: %s\n",
- devname);
+ if (report_mismatch)
+ pr_err("no correct container type: %s\n",
+ devname);
tmpdev->used = 2;
} else if (auto_assem &&
- !conf_test_metadata(tst->ss->name, (pol = devnum_policy(stb.st_rdev)),
- tst->ss->match_home(tst, homehost) == 1)) {
- if (report_missmatch)
- fprintf(stderr, Name ": %s has metadata type %s for which "
- "auto-assembly is disabled\n",
- devname, tst->ss->name);
+ !conf_test_metadata(tst->ss->name, (pol = devid_policy(stb.st_rdev)),
+ tst->ss->match_home(tst, c->homehost) == 1)) {
+ if (report_mismatch)
+ pr_err("%s has metadata type %s for which "
+ "auto-assembly is disabled\n",
+ devname, tst->ss->name);
tmpdev->used = 2;
} else
found_container = 1;
} else {
if (!tst && (tst = guess_super(dfd)) == NULL) {
- if (report_missmatch)
- fprintf(stderr, Name ": no recogniseable superblock on %s\n",
- devname);
+ if (report_mismatch)
+ pr_err("no recogniseable superblock on %s\n",
+ devname);
tmpdev->used = 2;
} else if (tst->ss->load_super(tst,dfd, NULL)) {
- if (report_missmatch)
- fprintf(stderr, Name ": no RAID superblock on %s\n",
- devname);
+ if (report_mismatch)
+ pr_err("no RAID superblock on %s\n",
+ devname);
tmpdev->used = 2;
} else if (tst->ss->compare_super == NULL) {
- if (report_missmatch)
- fprintf(stderr, Name ": Cannot assemble %s metadata on %s\n",
- tst->ss->name, devname);
+ if (report_mismatch)
+ pr_err("Cannot assemble %s metadata on %s\n",
+ tst->ss->name, devname);
tmpdev->used = 2;
} else if (auto_assem && st == NULL &&
- !conf_test_metadata(tst->ss->name, (pol = devnum_policy(stb.st_rdev)),
- tst->ss->match_home(tst, homehost) == 1)) {
- if (report_missmatch)
- fprintf(stderr, Name ": %s has metadata type %s for which "
- "auto-assembly is disabled\n",
- devname, tst->ss->name);
+ !conf_test_metadata(tst->ss->name, (pol = devid_policy(stb.st_rdev)),
+ tst->ss->match_home(tst, c->homehost) == 1)) {
+ if (report_mismatch)
+ pr_err("%s has metadata type %s for which "
+ "auto-assembly is disabled\n",
+ devname, tst->ss->name);
tmpdev->used = 2;
}
}
/* Ignore unrecognised device if looking for
* specific array */
goto loop;
-
- fprintf(stderr, Name ": %s has no superblock - assembly aborted\n",
- devname);
+ pr_err("%s has no superblock - assembly aborted\n",
+ devname);
if (st)
st->ss->free_super(st);
dev_policy_free(pol);
domain_free(domains);
- return 1;
+ return -1;
}
if (found_container) {
/* tmpdev is a container. We need to be either
* looking for a member, or auto-assembling
*/
+ /* should be safe to try an exclusive open now, we
+ * have rejected anything that some other mdadm might
+ * be looking at
+ */
+ dfd = dev_open(devname, O_RDONLY | O_EXCL);
+ if (dfd < 0) {
+ if (report_mismatch)
+ pr_err("%s is busy - skipping\n", devname);
+ goto loop;
+ }
+ close(dfd);
+
+ if (ident->container && ident->container[0] != '/') {
+ /* we have a uuid */
+ int uuid[4];
+
+ content = *contentp;
+ tst->ss->getinfo_super(tst, content, NULL);
- if (ident->container) {
- if (ident->container[0] == '/' &&
- !same_dev(ident->container, devname)) {
- if (report_missmatch)
- fprintf(stderr, Name ": %s is not the container required (%s)\n",
- devname, ident->container);
+ 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;
}
- if (ident->container[0] != '/') {
- /* we have a uuid */
- int uuid[4];
-
- content = &info;
- tst->ss->getinfo_super(tst, content, NULL);
-
- if (!parse_uuid(ident->container, uuid) ||
- !same_uuid(content->uuid, uuid, tst->ss->swapuuid)) {
- if (report_missmatch)
- fprintf(stderr, Name ": %s has wrong UUID to be required container\n",
- devname);
- goto loop;
- }
- }
}
/* It is worth looking inside this container.
*/
- if (verbose > 0)
- fprintf(stderr, Name ": looking in container %s\n",
- devname);
+ if (c->verbose > 0)
+ pr_err("looking in container %s\n",
+ devname);
for (content = tst->ss->container_content(tst, NULL);
content;
content = content->next) {
if (!ident_matches(ident, content, tst,
- homehost, update,
- report_missmatch ? devname : NULL))
+ c->homehost, c->update,
+ report_mismatch ? devname : NULL))
/* message already printed */;
else if (is_member_busy(content->text_version)) {
- if (report_missmatch)
- fprintf(stderr, Name ": member %s in %s is already assembled\n",
- content->text_version,
- devname);
+ if (report_mismatch)
+ pr_err("member %s in %s is already assembled\n",
+ content->text_version,
+ devname);
} else if (content->array.state & (1<<MD_SB_BLOCK_VOLUME)) {
/* do not assemble arrays with unsupported configurations */
- fprintf(stderr, Name ": Cannot activate member %s in %s.\n",
- content->text_version,
- devname);
+ pr_err("Cannot activate member %s in %s.\n",
+ content->text_version,
+ devname);
} else
break;
}
st = tst; tst = NULL;
if (!auto_assem && inargv && tmpdev->next != NULL) {
- fprintf(stderr, Name ": %s is a container, but is not "
- "only device given: confused and aborting\n",
- devname);
+ pr_err("%s is a container, but is not "
+ "only device given: confused and aborting\n",
+ devname);
st->ss->free_super(st);
dev_policy_free(pol);
domain_free(domains);
- return 1;
+ return -1;
}
- if (verbose > 0)
- fprintf(stderr, Name ": found match on member %s in %s\n",
- content->text_version, devname);
+ if (c->verbose > 0)
+ pr_err("found match on member %s in %s\n",
+ content->text_version, devname);
/* make sure we finished the loop */
tmpdev = NULL;
goto loop;
} else {
+ int rv = 0;
+ struct mddev_ident *match;
- content = &info;
+ content = *contentp;
tst->ss->getinfo_super(tst, content, NULL);
if (!ident_matches(ident, content, tst,
- homehost, update,
- report_missmatch ? devname : NULL))
+ c->homehost, c->update,
+ report_mismatch ? devname : NULL))
+ goto loop;
+
+ match = conf_match(tst, content, devname,
+ report_mismatch ? c->verbose : -1,
+ &rv);
+ if (!match && rv == 2)
+ goto loop;
+ if (match && match->devname &&
+ strcasecmp(match->devname, "<ignore>") == 0) {
+ if (report_mismatch)
+ pr_err("%s is a member of an explicitly ignored array\n",
+ devname);
+ goto loop;
+ }
+ if (match && !ident_matches(match, content, tst,
+ c->homehost, c->update,
+ report_mismatch ? devname : NULL))
+ /* Array exists in mdadm.conf but some
+ * details don't match, so reject it
+ */
+ goto loop;
+
+ /* should be safe to try an exclusive open now, we
+ * have rejected anything that some other mdadm might
+ * be looking at
+ */
+ dfd = dev_open(devname, O_RDONLY | O_EXCL);
+ if (dfd < 0) {
+ if (report_mismatch)
+ pr_err("%s is busy - skipping\n", devname);
goto loop;
-
+ }
+ close(dfd);
+
if (st == NULL)
st = dup_super(tst);
if (st->minor_version == -1)
*/
if (auto_assem)
goto loop;
- if (homehost) {
- int first = st->ss->match_home(st, homehost);
- int last = tst->ss->match_home(tst, homehost);
+ if (c->homehost) {
+ int first = st->ss->match_home(st, c->homehost);
+ int last = tst->ss->match_home(tst, c->homehost);
if (first != last &&
(first == 1 || last == 1)) {
/* We can do something */
if (first) {/* just ignore this one */
- if (report_missmatch)
- fprintf(stderr, Name ": %s misses out due to wrong homehost\n",
- devname);
+ if (report_mismatch)
+ pr_err("%s misses out due to wrong homehost\n",
+ devname);
goto loop;
} else { /* reject all those sofar */
struct mddev_dev *td;
- if (report_missmatch)
- fprintf(stderr, Name ": %s overrides previous devices due to good homehost\n",
- devname);
+ if (report_mismatch)
+ pr_err("%s overrides previous devices due to good homehost\n",
+ devname);
for (td=devlist; td != tmpdev; td=td->next)
if (td->used == 1)
td->used = 0;
}
}
}
- fprintf(stderr, Name ": superblock on %s doesn't match others - assembly aborted\n",
- devname);
+ pr_err("superblock on %s doesn't match others - assembly aborted\n",
+ devname);
tst->ss->free_super(tst);
st->ss->free_super(st);
dev_policy_free(pol);
domain_free(domains);
- return 1;
+ return -1;
}
tmpdev->used = 1;
}
/* Collect domain information from members only */
if (tmpdev && tmpdev->used == 1) {
if (!pol)
- pol = devnum_policy(stb.st_rdev);
+ pol = devid_policy(stb.st_rdev);
domain_merge(&domains, pol, tst?tst->ss->name:NULL);
}
dev_policy_free(pol);
if (tmpdev->used != 3)
continue;
tmpdev->used = 1;
- content = &info;
+ content = *contentp;
if (!st->sb) {
/* we need sb from one of the spares */
if (tmpdev->used != 3)
continue;
if (stat(tmpdev->devname, &stb)< 0) {
- fprintf(stderr, Name ": fstat failed for %s: %s\n",
- tmpdev->devname, strerror(errno));
+ pr_err("fstat failed for %s: %s\n",
+ tmpdev->devname, strerror(errno));
tmpdev->used = 2;
} else {
- struct dev_policy *pol = devnum_policy(stb.st_rdev);
+ struct dev_policy *pol = devid_policy(stb.st_rdev);
int dt = domain_test(domains, pol, NULL);
if (inargv && dt != 0)
/* take this spare as domains match
}
}
domain_free(domains);
-
- if (!st || !st->sb || !content)
- return 2;
-
- /* Now need to open the array device. Use create_mddev */
- if (content == &info)
+ *stp = st;
+ if (st && st->sb && content == *contentp)
st->ss->getinfo_super(st, content, NULL);
+ *contentp = content;
- trustworthy = FOREIGN;
- name = content->name;
- switch (st->ss->match_home(st, homehost)
- ?: st->ss->match_home(st, "any")) {
- case 1:
- trustworthy = LOCAL;
- name = strchr(content->name, ':');
- if (name)
- name++;
- else
- name = content->name;
- break;
- }
- if (!auto_assem)
- /* If the array is listed in mdadm.conf or on
- * command line, then we trust the name
- * even if the array doesn't look local
- */
- trustworthy = LOCAL;
-
- if (name[0] == 0 &&
- content->array.level == LEVEL_CONTAINER) {
- name = content->text_version;
- trustworthy = METADATA;
- }
-
- if (name[0] && trustworthy != LOCAL &&
- ! require_homehost &&
- conf_name_is_free(name))
- trustworthy = LOCAL;
-
- if (trustworthy == LOCAL &&
- strchr(name, ':'))
- /* Ignore 'host:' prefix of name */
- name = strchr(name, ':')+1;
-
- mdfd = create_mddev(mddev, name, ident->autof, trustworthy,
- chosen_name);
- if (mdfd < 0) {
- st->ss->free_super(st);
- if (auto_assem)
- goto try_again;
- return 1;
- }
- mddev = chosen_name;
- vers = md_get_version(mdfd);
- if (vers < 9000) {
- fprintf(stderr, Name ": Assemble requires driver version 0.90.0 or later.\n"
- " Upgrade your kernel or try --build\n");
- close(mdfd);
- return 1;
- }
- if (mddev_busy(fd2devnum(mdfd))) {
- fprintf(stderr, Name ": %s already active, cannot restart it!\n",
- mddev);
- for (tmpdev = devlist ;
- tmpdev && tmpdev->used != 1;
- tmpdev = tmpdev->next)
- ;
- if (tmpdev && auto_assem)
- fprintf(stderr, Name ": %s needed for %s...\n",
- mddev, tmpdev->devname);
- close(mdfd);
- mdfd = -3;
- st->ss->free_super(st);
- if (auto_assem)
- goto try_again;
- return 1;
- }
- ioctl(mdfd, STOP_ARRAY, NULL); /* just incase it was started but has no content */
+ return num_devs;
+}
+struct devs {
+ char *devname;
+ int uptodate; /* set once we decide that this device is as
+ * recent as everything else in the array.
+ */
+ int included; /* set if the device is already in the array
+ * due to a previous '-I'
+ */
+ struct mdinfo i;
+};
+
+static int load_devices(struct devs *devices, char *devmap,
+ struct mddev_ident *ident, struct supertype **stp,
+ struct mddev_dev *devlist, struct context *c,
+ struct mdinfo *content,
+ int mdfd, char *mddev,
+ int *most_recentp, int *bestcntp, int **bestp,
+ int inargv)
+{
+ struct mddev_dev *tmpdev;
+ int devcnt = 0;
+ int nextspare = 0;
#ifndef MDASSEMBLE
- if (content != &info) {
- /* This is a member of a container. Try starting the array. */
- int err;
- err = assemble_container_content(st, mdfd, content, runstop,
- chosen_name, verbose,
- backup_file, freeze_reshape);
- close(mdfd);
- return err;
- }
- bitmap_done = 0;
+ int bitmap_done = 0;
#endif
- /* Ok, no bad inconsistancy, we can try updating etc */
- devices = malloc(num_devs * sizeof(*devices));
- devmap = calloc(num_devs * content->array.raid_disks, 1);
- for (tmpdev = devlist; tmpdev; tmpdev=tmpdev->next) if (tmpdev->used == 1) {
+ 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)
+ continue;
/* looks like a good enough match to update the super block if needed */
#ifndef MDASSEMBLE
- if (update) {
+ if (c->update) {
int dfd;
/* prepare useful information in info structures */
struct stat stb2;
- struct supertype *tst;
int err;
fstat(mdfd, &stb2);
- if (strcmp(update, "uuid")==0 &&
+ if (strcmp(c->update, "uuid")==0 &&
!ident->uuid_set) {
int rfd;
if ((rfd = open("/dev/urandom", O_RDONLY)) < 0 ||
}
if (rfd >= 0) close(rfd);
}
- dfd = dev_open(devname, O_RDWR|O_EXCL);
+ 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) {
- fprintf(stderr, Name ": cannot re-read metadata from %s - aborting\n",
- devname);
+ pr_err("cannot re-read metadata from %s - aborting\n",
+ devname);
if (dfd >= 0)
close(dfd);
close(mdfd);
free(devices);
free(devmap);
- return 1;
+ tst->ss->free_super(tst);
+ free(tst);
+ *stp = st;
+ return -1;
}
tst->ss->getinfo_super(tst, content, devmap + devcnt * content->array.raid_disks);
strcpy(content->name, ident->name);
content->array.md_minor = minor(stb2.st_rdev);
- if (strcmp(update, "byteorder") == 0)
+ if (strcmp(c->update, "byteorder") == 0)
err = 0;
else
- err = tst->ss->update_super(tst, content, update,
- devname, verbose,
+ err = tst->ss->update_super(tst, content, c->update,
+ devname, c->verbose,
ident->uuid_set,
- homehost);
+ c->homehost);
if (err < 0) {
- fprintf(stderr,
- Name ": --update=%s not understood"
- " for %s metadata\n",
- update, tst->ss->name);
+ if (err == -1)
+ pr_err("--update=%s not understood"
+ " for %s metadata\n",
+ c->update, tst->ss->name);
tst->ss->free_super(tst);
free(tst);
close(mdfd);
close(dfd);
free(devices);
free(devmap);
- return 1;
+ *stp = st;
+ return -1;
}
- if (strcmp(update, "uuid")==0 &&
+ if (strcmp(c->update, "uuid")==0 &&
!ident->uuid_set) {
ident->uuid_set = 1;
memcpy(ident->uuid, content->uuid, 16);
}
if (tst->ss->store_super(tst, dfd))
- fprintf(stderr, Name ": Could not re-write superblock on %s.\n",
- devname);
+ pr_err("Could not re-write superblock on %s.\n",
+ devname);
close(dfd);
- if (strcmp(update, "uuid")==0 &&
+ if (strcmp(c->update, "uuid")==0 &&
ident->bitmap_fd >= 0 && !bitmap_done) {
if (bitmap_update_uuid(ident->bitmap_fd,
content->uuid,
tst->ss->swapuuid) != 0)
- fprintf(stderr, Name ": Could not update uuid on external bitmap.\n");
+ pr_err("Could not update uuid on external bitmap.\n");
else
bitmap_done = 1;
}
- tst->ss->free_super(tst);
} else
#endif
{
- struct supertype *tst = dup_super(st);
- int dfd;
- dfd = dev_open(devname, 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) {
- fprintf(stderr, Name ": cannot re-read metadata from %s - aborting\n",
- devname);
+ pr_err("cannot re-read metadata from %s - aborting\n",
+ devname);
if (dfd >= 0)
close(dfd);
close(mdfd);
free(devices);
free(devmap);
- return 1;
+ 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);
}
stat(devname, &stb);
- if (verbose > 0)
- fprintf(stderr, Name ": %s is identified as a member of %s, slot %d.\n",
- devname, mddev, content->disk.raid_disk);
+ if (c->verbose > 0)
+ pr_err("%s is identified as a member of %s, slot %d%s.\n",
+ devname, mddev, content->disk.raid_disk,
+ (content->disk.state & (1<<MD_DISK_REPLACEMENT)) ? " replacement":"");
devices[devcnt].devname = devname;
devices[devcnt].uptodate = 0;
+ devices[devcnt].included = (tmpdev->disposition == 'I');
devices[devcnt].i = *content;
devices[devcnt].i.disk.major = major(stb.st_rdev);
devices[devcnt].i.disk.minor = minor(stb.st_rdev);
- if (most_recent < devcnt) {
- if (devices[devcnt].i.events
- > devices[most_recent].i.events)
+
+ 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 */
i = devcnt;
else
i = devices[devcnt].i.disk.raid_disk;
if (i+1 == 0) {
- if (nextspare < content->array.raid_disks)
- nextspare = content->array.raid_disks;
+ if (nextspare < content->array.raid_disks*2)
+ nextspare = content->array.raid_disks*2;
i = nextspare++;
} else {
- if (i >= content->array.raid_disks &&
+ /* i is raid_disk - double it so there is room for
+ * replacements */
+ i *= 2;
+ if (devices[devcnt].i.disk.state & (1<<MD_DISK_REPLACEMENT))
+ i++;
+ if (i >= content->array.raid_disks*2 &&
i >= nextspare)
nextspare = i+1;
}
if (i < 10000) {
if (i >= bestcnt) {
int newbestcnt = i+10;
- int *newbest = malloc(sizeof(int)*newbestcnt);
+ int *newbest = xmalloc(sizeof(int)*newbestcnt);
int c;
for (c=0; c < newbestcnt; c++)
if (c < bestcnt)
* Could be a mis-detection caused by overlapping
* partitions. fail-safe.
*/
- fprintf(stderr, Name ": WARNING %s and %s appear"
- " to have very similar superblocks.\n"
- " If they are really different, "
- "please --zero the superblock on one\n"
- " If they are the same or overlap,"
- " please remove one from %s.\n",
- devices[best[i]].devname, devname,
- inargv ? "the list" :
- "the\n DEVICE list in mdadm.conf"
+ pr_err("WARNING %s and %s appear"
+ " to have very similar superblocks.\n"
+ " If they are really different, "
+ "please --zero the superblock on one\n"
+ " If they are the same or overlap,"
+ " please remove one from %s.\n",
+ devices[best[i]].devname, devname,
+ inargv ? "the list" :
+ "the\n DEVICE list in mdadm.conf"
);
close(mdfd);
free(devices);
free(devmap);
- return 1;
+ *stp = st;
+ return -1;
}
if (best[i] == -1
|| (devices[best[i]].i.events
}
devcnt++;
}
+ if (most_recent >= 0)
+ *most_recentp = most_recent;
+ *bestcntp = bestcnt;
+ *bestp = best;
+ *stp = st;
+ return devcnt;
+}
- if (devcnt == 0) {
- fprintf(stderr, Name ": no devices found for %s\n",
- mddev);
- if (st)
- st->ss->free_super(st);
- close(mdfd);
- free(devices);
- free(devmap);
- return 1;
- }
-
- if (update && strcmp(update, "byteorder")==0)
- st->minor_version = 90;
-
- st->ss->getinfo_super(st, content, NULL);
- clean = content->array.state & 1;
-
- /* now we have some devices that might be suitable.
- * I wonder how many
- */
- avail = malloc(content->array.raid_disks);
- memset(avail, 0, content->array.raid_disks);
- okcnt = 0;
- sparecnt=0;
- rebuilding_cnt=0;
- for (i=0; i< bestcnt; i++) {
- int j = best[i];
- int event_margin = 1; /* always allow a difference of '1'
- * like the kernel does
- */
- if (j < 0) continue;
- /* note: we ignore error flags in multipath arrays
- * as they don't make sense
- */
- if (content->array.level != LEVEL_MULTIPATH)
- if (!(devices[j].i.disk.state & (1<<MD_DISK_ACTIVE))) {
- if (!(devices[j].i.disk.state
- & (1<<MD_DISK_FAULTY))) {
- devices[j].uptodate = 1;
- sparecnt++;
- }
- continue;
- }
- /* If this device thinks that 'most_recent' has failed, then
- * we must reject this device.
- */
- if (j != most_recent &&
- 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) {
- if (verbose > -1)
- fprintf(stderr, Name ": ignoring %s as it reports %s as failed\n",
- devices[j].devname, devices[most_recent].devname);
- best[i] = -1;
- continue;
- }
- if (devices[j].i.events+event_margin >=
- devices[most_recent].i.events) {
- devices[j].uptodate = 1;
- if (i < content->array.raid_disks) {
- if (devices[j].i.recovery_start == MaxSector ||
- (content->reshape_active &&
- j >= content->array.raid_disks - content->delta_disks)) {
- okcnt++;
- avail[i]=1;
- } else
- rebuilding_cnt++;
- } else
- sparecnt++;
- }
- }
- free(devmap);
- while (force &&
- (!enough(content->array.level, content->array.raid_disks,
- content->array.layout, 1,
+static int force_array(struct mdinfo *content,
+ struct devs *devices,
+ int *best, int bestcnt, char *avail,
+ int most_recent,
+ struct supertype *st,
+ struct context *c)
+{
+ int okcnt = 0;
+ while (!enough(content->array.level, content->array.raid_disks,
+ content->array.layout, 1,
+ avail)
+ ||
+ (content->reshape_active && content->delta_disks > 0 &&
+ !enough(content->array.level, (content->array.raid_disks
+ - content->delta_disks),
+ content->new_layout, 1,
avail)
- ||
- (content->reshape_active && content->delta_disks > 0 &&
- !enough(content->array.level, (content->array.raid_disks
- - content->delta_disks),
- content->new_layout, 1,
- avail)
- ))) {
+ )) {
/* Choose the newest best drive which is
* not up-to-date, update the superblock
* and add it.
int fd;
struct supertype *tst;
unsigned long long current_events;
- chosen_drive = -1;
- for (i = 0; i < content->array.raid_disks && i < bestcnt; i++) {
+ int chosen_drive = -1;
+ int i;
+
+ for (i = 0;
+ i < content->array.raid_disks * 2 && i < bestcnt;
+ i += 2) {
int j = best[i];
if (j>=0 &&
!devices[j].uptodate &&
break;
current_events = devices[chosen_drive].i.events;
add_another:
- if (verbose >= 0)
- fprintf(stderr, Name ": forcing event count in %s(%d) from %d upto %d\n",
- devices[chosen_drive].devname,
- devices[chosen_drive].i.disk.raid_disk,
- (int)(devices[chosen_drive].i.events),
- (int)(devices[most_recent].i.events));
- fd = dev_open(devices[chosen_drive].devname, O_RDWR|O_EXCL);
+ if (c->verbose >= 0)
+ pr_err("forcing event count in %s(%d) from %d upto %d\n",
+ devices[chosen_drive].devname,
+ devices[chosen_drive].i.disk.raid_disk,
+ (int)(devices[chosen_drive].i.events),
+ (int)(devices[most_recent].i.events));
+ fd = dev_open(devices[chosen_drive].devname,
+ devices[chosen_drive].included ? O_RDWR
+ : (O_RDWR|O_EXCL));
if (fd < 0) {
- fprintf(stderr, Name ": Couldn't open %s for write - not updating\n",
- devices[chosen_drive].devname);
+ pr_err("Couldn't open %s for write - not updating\n",
+ devices[chosen_drive].devname);
devices[chosen_drive].i.events = 0;
continue;
}
tst = dup_super(st);
if (tst->ss->load_super(tst,fd, NULL)) {
close(fd);
- fprintf(stderr, Name ": RAID superblock disappeared from %s - not updating.\n",
- devices[chosen_drive].devname);
+ pr_err("RAID superblock disappeared from %s - not updating.\n",
+ devices[chosen_drive].devname);
devices[chosen_drive].i.events = 0;
continue;
}
content->events = devices[most_recent].i.events;
tst->ss->update_super(tst, content, "force-one",
- devices[chosen_drive].devname, verbose,
- 0, NULL);
+ devices[chosen_drive].devname, c->verbose,
+ 0, NULL);
if (tst->ss->store_super(tst, fd)) {
close(fd);
- fprintf(stderr, Name ": Could not re-write superblock on %s\n",
- devices[chosen_drive].devname);
+ pr_err("Could not re-write superblock on %s\n",
+ devices[chosen_drive].devname);
devices[chosen_drive].i.events = 0;
tst->ss->free_super(tst);
continue;
/* 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 &&
+ devices[j].i.recovery_start == MaxSector &&
devices[j].i.events == current_events) {
chosen_drive = j;
goto add_another;
}
}
}
+ return okcnt;
+}
+
+static int start_array(int mdfd,
+ char *mddev,
+ struct mdinfo *content,
+ struct supertype *st,
+ struct mddev_ident *ident,
+ int *best, int bestcnt,
+ int chosen_drive,
+ struct devs *devices,
+ unsigned int okcnt,
+ unsigned int sparecnt,
+ unsigned int rebuilding_cnt,
+ struct context *c,
+ int clean, char *avail,
+ int start_partial_ok,
+ int err_ok,
+ int was_forced
+ )
+{
+ int rv;
+ int i;
+ unsigned int req_cnt;
+ rv = set_array_info(mdfd, st, content);
+ if (rv && !err_ok) {
+ pr_err("failed to set array info for %s: %s\n",
+ mddev, strerror(errno));
+ return 1;
+ }
+ if (ident->bitmap_fd >= 0) {
+ if (ioctl(mdfd, SET_BITMAP_FILE, ident->bitmap_fd) != 0) {
+ pr_err("SET_BITMAP_FILE failed.\n");
+ return 1;
+ }
+ } else if (ident->bitmap_file) {
+ /* From config file */
+ int bmfd = open(ident->bitmap_file, O_RDWR);
+ if (bmfd < 0) {
+ pr_err("Could not open bitmap file %s\n",
+ ident->bitmap_file);
+ return 1;
+ }
+ if (ioctl(mdfd, SET_BITMAP_FILE, bmfd) != 0) {
+ pr_err("Failed to set bitmapfile for %s\n", mddev);
+ close(bmfd);
+ return 1;
+ }
+ close(bmfd);
+ }
+
+ /* First, add the raid disks, but add the chosen one last */
+ for (i=0; i<= bestcnt; i++) {
+ int j;
+ if (i < bestcnt) {
+ j = best[i];
+ if (j == chosen_drive)
+ continue;
+ } else
+ j = chosen_drive;
+
+ if (j >= 0 && !devices[j].included) {
+ int dfd = dev_open(devices[j].devname,
+ O_RDWR|O_EXCL);
+ if (dfd >= 0) {
+ remove_partitions(dfd);
+ close(dfd);
+ }
+ rv = add_disk(mdfd, st, content, &devices[j].i);
+
+ if (rv) {
+ pr_err("failed to add "
+ "%s to %s: %s\n",
+ devices[j].devname,
+ mddev,
+ strerror(errno));
+ if (i < content->array.raid_disks * 2
+ || i == bestcnt)
+ okcnt--;
+ else
+ sparecnt--;
+ } else if (c->verbose > 0)
+ pr_err("added %s to %s as %d%s%s\n",
+ devices[j].devname, mddev,
+ devices[j].i.disk.raid_disk,
+ devices[j].uptodate?"":
+ " (possibly out of date)",
+ (devices[j].i.disk.state & (1<<MD_DISK_REPLACEMENT))?" replacement":"");
+ } else if (j >= 0) {
+ if (c->verbose > 0)
+ pr_err("%s is already in %s as %d\n",
+ devices[j].devname, mddev,
+ devices[j].i.disk.raid_disk);
+ } else if (c->verbose > 0 && i < content->array.raid_disks*2
+ && (i&1) == 0)
+ pr_err("no uptodate device for slot %d of %s\n",
+ i, mddev);
+ }
+
+ if (content->array.level == LEVEL_CONTAINER) {
+ if (c->verbose >= 0) {
+ pr_err("Container %s has been "
+ "assembled with %d drive%s",
+ mddev, okcnt+sparecnt, okcnt+sparecnt==1?"":"s");
+ if (okcnt < (unsigned)content->array.raid_disks)
+ fprintf(stderr, " (out of %d)",
+ content->array.raid_disks);
+ fprintf(stderr, "\n");
+ }
+ 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;
+ }
+
+ /* Get number of in-sync devices according to the superblock.
+ * We must have this number to start the array without -s or -R
+ */
+ req_cnt = content->array.working_disks;
+
+ if (c->runstop == 1 ||
+ (c->runstop <= 0 &&
+ ( enough(content->array.level, content->array.raid_disks,
+ content->array.layout, clean, avail) &&
+ (okcnt + rebuilding_cnt >= req_cnt || start_partial_ok)
+ ))) {
+ /* This array is good-to-go.
+ * If a reshape is in progress then we might need to
+ * continue monitoring it. In that case we start
+ * it read-only and let the grow code make it writable.
+ */
+ int rv;
+#ifndef MDASSEMBLE
+ 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)
+ rv = Grow_continue(mdfd, st, content,
+ c->backup_file,
+ c->freeze_reshape);
+ } else if (c->readonly &&
+ sysfs_attribute_available(
+ content, NULL, "array_state")) {
+ rv = sysfs_set_str(content, NULL,
+ "array_state", "readonly");
+ } 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",
+ mddev, okcnt, okcnt==1?"":"s");
+ if (okcnt < (unsigned)content->array.raid_disks)
+ fprintf(stderr, " (out of %d)", content->array.raid_disks);
+ if (rebuilding_cnt)
+ fprintf(stderr, "%s %d rebuilding", sparecnt?",":" and", rebuilding_cnt);
+ if (sparecnt)
+ fprintf(stderr, " and %d spare%s", sparecnt, sparecnt==1?"":"s");
+ fprintf(stderr, ".\n");
+ }
+ if (content->reshape_active &&
+ content->array.level >= 4 &&
+ content->array.level <= 6) {
+ /* might need to increase the size
+ * of the stripe cache - default is 256
+ */
+ if (256 < 4 * (content->array.chunk_size/4096)) {
+ struct mdinfo *sra = sysfs_read(mdfd, NULL, 0);
+ if (sra)
+ sysfs_set_num(sra, NULL,
+ "stripe_cache_size",
+ (4 * content->array.chunk_size / 4096) + 1);
+ sysfs_free(sra);
+ }
+ }
+ if (okcnt < (unsigned)content->array.raid_disks) {
+ /* If any devices did not get added
+ * because the kernel rejected them based
+ * on event count, try adding them
+ * again providing the action policy is
+ * 're-add' or greater. The bitmap
+ * might allow them to be included, or
+ * they will become spares.
+ */
+ for (i = 0; i < bestcnt; i++) {
+ int j = best[i];
+ if (j >= 0 && !devices[j].uptodate) {
+ if (!disk_action_allows(&devices[j].i, st->ss->name, act_re_add))
+ continue;
+ rv = add_disk(mdfd, st, content,
+ &devices[j].i);
+ if (rv == 0 && c->verbose >= 0)
+ pr_err("%s has been re-added.\n",
+ devices[j].devname);
+ }
+ }
+ }
+ if (content->array.level == 6 &&
+ okcnt + 1 == (unsigned)content->array.raid_disks &&
+ was_forced) {
+ struct mdinfo *sra = sysfs_read(mdfd, NULL, 0);
+ if (sra)
+ sysfs_set_str(sra, NULL,
+ "sync_action", "repair");
+ sysfs_free(sra);
+ }
+ return 0;
+ }
+ pr_err("failed to RUN_ARRAY %s: %s\n",
+ mddev, strerror(errno));
+
+ if (!enough(content->array.level, content->array.raid_disks,
+ content->array.layout, 1, avail))
+ pr_err("Not enough devices to "
+ "start the array.\n");
+ else if (!enough(content->array.level,
+ content->array.raid_disks,
+ content->array.layout, clean,
+ avail))
+ pr_err("Not enough devices to "
+ "start the array while not clean "
+ "- consider --force.\n");
+
+ return 1;
+ }
+ if (c->runstop == -1) {
+ pr_err("%s assembled from %d drive%s",
+ mddev, okcnt, okcnt==1?"":"s");
+ if (okcnt != (unsigned)content->array.raid_disks)
+ fprintf(stderr, " (out of %d)", content->array.raid_disks);
+ fprintf(stderr, ", but not started.\n");
+ return 2;
+ }
+ if (c->verbose >= -1) {
+ pr_err("%s assembled from %d drive%s", mddev, okcnt, okcnt==1?"":"s");
+ if (rebuilding_cnt)
+ fprintf(stderr, "%s %d rebuilding", sparecnt?",":" and", rebuilding_cnt);
+ if (sparecnt)
+ fprintf(stderr, " and %d spare%s", sparecnt, sparecnt==1?"":"s");
+ if (!enough(content->array.level, content->array.raid_disks,
+ content->array.layout, 1, avail))
+ fprintf(stderr, " - not enough to start the array.\n");
+ else if (!enough(content->array.level,
+ content->array.raid_disks,
+ content->array.layout, clean,
+ avail))
+ fprintf(stderr, " - not enough to start the "
+ "array while not clean - consider "
+ "--force.\n");
+ else {
+ if (req_cnt == (unsigned)content->array.raid_disks)
+ fprintf(stderr, " - need all %d to start it", req_cnt);
+ else
+ fprintf(stderr, " - need %d to start", req_cnt);
+ fprintf(stderr, " (use --run to insist).\n");
+ }
+ }
+ return 1;
+}
+
+int Assemble(struct supertype *st, char *mddev,
+ struct mddev_ident *ident,
+ struct mddev_dev *devlist,
+ struct context *c)
+{
+ /*
+ * The task of Assemble is to find a collection of
+ * devices that should (according to their superblocks)
+ * form an array, and to give this collection to the MD driver.
+ * In Linux-2.4 and later, this involves submitting a
+ * SET_ARRAY_INFO ioctl with no arg - to prepare
+ * the array - and then submit a number of
+ * ADD_NEW_DISK ioctls to add disks into
+ * the array. Finally RUN_ARRAY might
+ * be submitted to start the array.
+ *
+ * Much of the work of Assemble is in finding and/or
+ * checking the disks to make sure they look right.
+ *
+ * If mddev is not set, then scan must be set and we
+ * read through the config file for dev+uuid mapping
+ * We recurse, setting mddev, for each device that
+ * - isn't running
+ * - has a valid uuid (or any uuid if !uuidset)
+ *
+ * If mddev is set, we try to determine state of md.
+ * check version - must be at least 0.90.0
+ * check kernel version. must be at least 2.4.
+ * If not, we can possibly fall back on START_ARRAY
+ * Try to GET_ARRAY_INFO.
+ * If possible, give up
+ * If not, try to STOP_ARRAY just to make sure
+ *
+ * If !uuidset and scan, look in conf-file for uuid
+ * If not found, give up
+ * If !devlist and scan and uuidset, get list of devs from conf-file
+ *
+ * For each device:
+ * Check superblock - discard if bad
+ * Check uuid (set if we don't have one) - discard if no match
+ * Check superblock similarity if we have a superblock - discard if different
+ * Record events, devicenum
+ * This should give us a list of devices for the array
+ * We should collect the most recent event number
+ *
+ * Count disks with recent enough event count
+ * While force && !enough disks
+ * Choose newest rejected disks, update event count
+ * mark clean and rewrite superblock
+ * If recent kernel:
+ * SET_ARRAY_INFO
+ * foreach device with recent events : ADD_NEW_DISK
+ * if runstop == 1 || "enough" disks and runstop==0 -> RUN_ARRAY
+ * If old kernel:
+ * Check the device numbers in superblock are right
+ * update superblock if any changes
+ * START_ARRAY
+ *
+ */
+ int rv;
+ int mdfd;
+ int clean;
+ int auto_assem = (mddev == NULL && !ident->uuid_set &&
+ ident->super_minor == UnSet && ident->name[0] == 0
+ && (ident->container == NULL || ident->member == NULL));
+ struct devs *devices;
+ char *devmap;
+ int *best = NULL; /* indexed by raid_disk */
+ int bestcnt = 0;
+ int devcnt;
+ unsigned int okcnt, sparecnt, rebuilding_cnt, replcnt;
+ int i;
+ int was_forced = 0;
+ int most_recent = 0;
+ int chosen_drive;
+ int change = 0;
+ int inargv = 0;
+ int start_partial_ok = (c->runstop >= 0) &&
+ (c->force || devlist==NULL || auto_assem);
+ int num_devs;
+ struct mddev_dev *tmpdev;
+ struct mdinfo info;
+ struct mdinfo *content = NULL;
+ struct mdinfo *pre_exist = NULL;
+ char *avail;
+ char *name = NULL;
+ char chosen_name[1024];
+ struct map_ent *map = NULL;
+ struct map_ent *mp;
+
+ /*
+ * If any subdevs are listed, then any that don't
+ * match ident are discarded. Remainder must all match and
+ * become the array.
+ * If no subdevs, then we scan all devices in the config file, but
+ * there must be something in the identity
+ */
+
+ if (!devlist &&
+ ident->uuid_set == 0 &&
+ (ident->super_minor < 0 || ident->super_minor == UnSet) &&
+ ident->name[0] == 0 &&
+ (ident->container == NULL || ident->member == NULL) &&
+ ident->devices == NULL) {
+ pr_err("No identity information available for %s - cannot assemble.\n",
+ mddev ? mddev : "further assembly");
+ return 1;
+ }
+
+ if (devlist == NULL)
+ devlist = conf_get_devs();
+ else if (mddev)
+ inargv = 1;
+
+try_again:
+ /* We come back here when doing auto-assembly and attempting some
+ * set of devices failed. Those are now marked as ->used==2 and
+ * we ignore them and try again
+ */
+ if (!st && ident->st)
+ st = ident->st;
+ if (c->verbose>0)
+ pr_err("looking for devices for %s\n",
+ mddev ? mddev : "further assembly");
+
+ content = &info;
+ if (st)
+ st->ignore_hw_compat = 1;
+ num_devs = select_devices(devlist, ident, &st, &content, c,
+ inargv, auto_assem);
+ if (num_devs < 0)
+ return 1;
+
+ if (!st || !st->sb || !content)
+ return 2;
+
+ /* We have a full set of devices - we now need to find the
+ * array device.
+ * However there is a risk that we are racing with "mdadm -I"
+ * and the array is already partially assembled - we will have
+ * rejected any devices already in this address.
+ * So we take a lock on the map file - to prevent further races -
+ * and look for the uuid in there. If found and the array is
+ * active, we abort. If found and the array is not active
+ * we commit to that md device and add all the contained devices
+ * to our list. We flag them so that we don't try to re-add,
+ * but can remove if they turn out to not be wanted.
+ */
+ if (map_lock(&map))
+ pr_err("failed to get exclusive lock on mapfile - continue anyway...\n");
+ mp = map_by_uuid(&map, content->uuid);
+ if (mp) {
+ struct mdinfo *dv;
+ /* array already exists. */
+ pre_exist = sysfs_read(-1, mp->devnm, GET_LEVEL|GET_DEVS);
+ if (pre_exist->array.level != UnSet) {
+ pr_err("Found some drive for an array that is already active: %s\n",
+ mp->path);
+ pr_err("giving up.\n");
+ return 1;
+ }
+ for (dv = pre_exist->devs; dv; dv = dv->next) {
+ /* We want to add this device to our list,
+ * but it could already be there if "mdadm -I"
+ * started *after* we checked for O_EXCL.
+ * If we add it to the top of the list
+ * it will be preferred over later copies.
+ */
+ struct mddev_dev *newdev;
+ char *devname = map_dev(dv->disk.major,
+ dv->disk.minor,
+ 0);
+ if (!devname)
+ continue;
+ newdev = xmalloc(sizeof(*newdev));
+ newdev->devname = devname;
+ newdev->disposition = 'I';
+ newdev->used = 1;
+ newdev->next = devlist;
+ devlist = newdev;
+ num_devs++;
+ }
+ strcpy(chosen_name, mp->path);
+ if (c->verbose > 0 || mddev == NULL ||
+ strcmp(mddev, chosen_name) != 0)
+ pr_err("Merging with already-assembled %s\n",
+ chosen_name);
+ mdfd = open_dev_excl(mp->devnm);
+ } else {
+ int trustworthy = FOREIGN;
+ name = content->name;
+ switch (st->ss->match_home(st, c->homehost)
+ ?: st->ss->match_home(st, "any")) {
+ case 1:
+ trustworthy = LOCAL;
+ name = strchr(content->name, ':');
+ if (name)
+ name++;
+ else
+ name = content->name;
+ break;
+ }
+ if (!auto_assem)
+ /* If the array is listed in mdadm.conf or on
+ * command line, then we trust the name
+ * even if the array doesn't look local
+ */
+ trustworthy = LOCAL;
+
+ if (name[0] == 0 &&
+ content->array.level == LEVEL_CONTAINER) {
+ name = content->text_version;
+ trustworthy = METADATA;
+ }
+
+ if (name[0] && trustworthy != LOCAL &&
+ ! c->require_homehost &&
+ conf_name_is_free(name))
+ trustworthy = LOCAL;
+
+ if (trustworthy == LOCAL &&
+ strchr(name, ':'))
+ /* Ignore 'host:' prefix of name */
+ name = strchr(name, ':')+1;
+
+ mdfd = create_mddev(mddev, name, ident->autof, trustworthy,
+ chosen_name);
+ }
+ if (mdfd < 0) {
+ st->ss->free_super(st);
+ if (auto_assem)
+ goto try_again;
+ return 1;
+ }
+ mddev = chosen_name;
+ if (get_linux_version() < 2004000 ||
+ md_get_version(mdfd) < 9000) {
+ pr_err("Assemble requires Linux 2.4 or later, and\n"
+ " md driver version 0.90.0 or later.\n"
+ " Upgrade your kernel or try --build\n");
+ close(mdfd);
+ return 1;
+ }
+ if (pre_exist == NULL) {
+ if (mddev_busy(fd2devnm(mdfd))) {
+ pr_err("%s already active, cannot restart it!\n",
+ mddev);
+ for (tmpdev = devlist ;
+ tmpdev && tmpdev->used != 1;
+ tmpdev = tmpdev->next)
+ ;
+ if (tmpdev && auto_assem)
+ pr_err("%s needed for %s...\n",
+ mddev, tmpdev->devname);
+ close(mdfd);
+ mdfd = -3;
+ st->ss->free_super(st);
+ if (auto_assem)
+ goto try_again;
+ return 1;
+ }
+ /* just incase it was started but has no content */
+ ioctl(mdfd, STOP_ARRAY, NULL);
+ }
+
+#ifndef MDASSEMBLE
+ if (content != &info) {
+ /* This is a member of a container. Try starting the array. */
+ int err;
+ err = assemble_container_content(st, mdfd, content, c,
+ chosen_name, NULL);
+ close(mdfd);
+ return err;
+ }
+#endif
+ /* 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,
+ c, content, mdfd, mddev,
+ &most_recent, &bestcnt, &best, inargv);
+ if (devcnt < 0)
+ return 1;
+
+ if (devcnt == 0) {
+ pr_err("no devices found for %s\n",
+ mddev);
+ if (st)
+ st->ss->free_super(st);
+ close(mdfd);
+ free(devices);
+ free(devmap);
+ return 1;
+ }
+
+ if (c->update && strcmp(c->update, "byteorder")==0)
+ st->minor_version = 90;
+
+ st->ss->getinfo_super(st, content, NULL);
+ clean = content->array.state & 1;
+
+ /* now we have some devices that might be suitable.
+ * I wonder how many
+ */
+ avail = xcalloc(content->array.raid_disks, 1);
+ okcnt = 0;
+ replcnt = 0;
+ sparecnt=0;
+ rebuilding_cnt=0;
+ for (i=0; i< bestcnt; i++) {
+ int j = best[i];
+ int event_margin = 1; /* always allow a difference of '1'
+ * like the kernel does
+ */
+ if (j < 0) continue;
+ /* note: we ignore error flags in multipath arrays
+ * as they don't make sense
+ */
+ if (content->array.level != LEVEL_MULTIPATH)
+ if (!(devices[j].i.disk.state & (1<<MD_DISK_ACTIVE))) {
+ if (!(devices[j].i.disk.state
+ & (1<<MD_DISK_FAULTY))) {
+ devices[j].uptodate = 1;
+ sparecnt++;
+ }
+ continue;
+ }
+ /* If this device thinks that 'most_recent' has failed, then
+ * we must reject this device.
+ */
+ 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) {
+ if (c->verbose > -1)
+ pr_err("ignoring %s as it reports %s as failed\n",
+ devices[j].devname, devices[most_recent].devname);
+ best[i] = -1;
+ continue;
+ }
+ /* Require event counter to be same as, or just less than,
+ * most recent. If it is bigger, it must be a stray spare and
+ * should be ignored.
+ */
+ if (devices[j].i.events+event_margin >=
+ devices[most_recent].i.events &&
+ devices[j].i.events <=
+ devices[most_recent].i.events
+ ) {
+ devices[j].uptodate = 1;
+ if (i < content->array.raid_disks * 2) {
+ if (devices[j].i.recovery_start == MaxSector ||
+ (content->reshape_active &&
+ ((i >= content->array.raid_disks - content->delta_disks) ||
+ (i >= content->array.raid_disks - content->delta_disks - 1
+ && content->array.level == 4)))) {
+ if (!avail[i/2]) {
+ okcnt++;
+ avail[i/2]=1;
+ } else
+ replcnt++;
+ } else
+ rebuilding_cnt++;
+ } else
+ sparecnt++;
+ }
+ }
+ free(devmap);
+ if (c->force) {
+ int force_ok = force_array(content, devices, best, bestcnt,
+ avail, most_recent, st, c);
+ okcnt += force_ok;
+ if (force_ok)
+ was_forced = 1;
+ }
/* Now we want to look at the superblock which the kernel will base things on
* and compare the devices that we think are working with the devices that the
* superblock thinks are working.
*/
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;
if (devices[j].i.events < devices[most_recent].i.events)
continue;
chosen_drive = j;
- if ((fd=dev_open(devices[j].devname, O_RDONLY|O_EXCL))< 0) {
- fprintf(stderr, Name ": Cannot open %s: %s\n",
- devices[j].devname, strerror(errno));
+ if ((fd=dev_open(devices[j].devname,
+ devices[j].included ? O_RDONLY
+ : (O_RDONLY|O_EXCL)))< 0) {
+ pr_err("Cannot open %s: %s\n",
+ devices[j].devname, strerror(errno));
close(mdfd);
free(devices);
return 1;
}
if (st->ss->load_super(st,fd, NULL)) {
close(fd);
- fprintf(stderr, Name ": RAID superblock has disappeared from %s\n",
- devices[j].devname);
+ pr_err("RAID superblock has disappeared from %s\n",
+ devices[j].devname);
close(mdfd);
free(devices);
return 1;
close(fd);
}
if (st->sb == NULL) {
- fprintf(stderr, Name ": No suitable drives found for %s\n", mddev);
+ pr_err("No suitable drives found for %s\n", mddev);
close(mdfd);
free(devices);
return 1;
}
st->ss->getinfo_super(st, content, NULL);
#ifndef MDASSEMBLE
- sysfs_init(content, mdfd, 0);
+ sysfs_init(content, mdfd, NULL);
#endif
for (i=0; i<bestcnt; i++) {
int j = best[i];
unsigned int desired_state;
- if (i < content->array.raid_disks)
- desired_state = (1<<MD_DISK_ACTIVE) | (1<<MD_DISK_SYNC);
- else
+ if (i >= content->array.raid_disks * 2)
desired_state = 0;
+ else if (i & 1)
+ desired_state = (1<<MD_DISK_ACTIVE) | (1<<MD_DISK_REPLACEMENT);
+ else
+ desired_state = (1<<MD_DISK_ACTIVE) | (1<<MD_DISK_SYNC);
if (j<0)
continue;
clean = 0;
if (st->ss->update_super(st, &devices[j].i, "assemble", NULL,
- verbose, 0, NULL)) {
- if (force) {
- if (verbose >= 0)
- fprintf(stderr, Name ": "
- "clearing FAULTY flag for device %d in %s for %s\n",
- j, mddev, devices[j].devname);
+ c->verbose, 0, NULL)) {
+ if (c->force) {
+ if (c->verbose >= 0)
+ pr_err("clearing FAULTY flag for device %d in %s for %s\n",
+ j, mddev, devices[j].devname);
change = 1;
} else {
- if (verbose >= -1)
- fprintf(stderr, Name ": "
- "device %d in %s has wrong state in superblock, but %s seems ok\n",
- i, mddev, devices[j].devname);
+ if (c->verbose >= -1)
+ pr_err("device %d in %s has wrong state in superblock, but %s seems ok\n",
+ i, mddev, devices[j].devname);
}
}
#if 0
if (!(super.disks[i].i.disk.state & (1 << MD_DISK_FAULTY))) {
- fprintf(stderr, Name ": devices %d of %s is not marked FAULTY in superblock, but cannot be found\n",
- i, mddev);
+ pr_err("devices %d of %s is not marked FAULTY in superblock, but cannot be found\n",
+ i, mddev);
}
#endif
}
- if (force && !clean &&
+ if (c->force && !clean &&
!enough(content->array.level, content->array.raid_disks,
content->array.layout, clean,
avail)) {
change += st->ss->update_super(st, content, "force-array",
- devices[chosen_drive].devname, verbose,
+ devices[chosen_drive].devname, c->verbose,
0, NULL);
+ was_forced = 1;
clean = 1;
}
if (change) {
int fd;
- fd = dev_open(devices[chosen_drive].devname, O_RDWR|O_EXCL);
+ fd = dev_open(devices[chosen_drive].devname,
+ devices[chosen_drive].included ?
+ O_RDWR : (O_RDWR|O_EXCL));
if (fd < 0) {
- fprintf(stderr, Name ": Could not open %s for write - cannot Assemble array.\n",
- devices[chosen_drive].devname);
+ pr_err("Could not open %s for write - cannot Assemble array.\n",
+ devices[chosen_drive].devname);
close(mdfd);
free(devices);
return 1;
}
if (st->ss->store_super(st, fd)) {
close(fd);
- fprintf(stderr, Name ": Could not re-write superblock on %s\n",
- devices[chosen_drive].devname);
+ pr_err("Could not re-write superblock on %s\n",
+ devices[chosen_drive].devname);
close(mdfd);
free(devices);
return 1;
}
- if (verbose >= 0)
- fprintf(stderr, Name ": Marking array %s as 'clean'\n",
- mddev);
+ if (c->verbose >= 0)
+ pr_err("Marking array %s as 'clean'\n",
+ mddev);
close(fd);
}
* The code of doing this lives in Grow.c
*/
#ifndef MDASSEMBLE
- if (content->reshape_active) {
+ if (content->reshape_active &&
+ !(content->reshape_active & RESHAPE_NO_BACKUP)) {
int err = 0;
- int *fdlist = malloc(sizeof(int)* bestcnt);
- if (verbose > 0)
- fprintf(stderr, Name ":%s has an active reshape - checking "
- "if critical section needs to be restored\n",
- chosen_name);
- for (i=0; i<bestcnt; i++) {
- int j = best[i];
+ int *fdlist = xmalloc(sizeof(int)* bestcnt);
+ if (c->verbose > 0)
+ pr_err(":%s has an active reshape - checking "
+ "if critical section needs to be restored\n",
+ chosen_name);
+ enable_fds(bestcnt/2);
+ for (i = 0; i < bestcnt/2; i++) {
+ int j = best[i*2];
if (j >= 0) {
- fdlist[i] = dev_open(devices[j].devname, O_RDWR|O_EXCL);
+ fdlist[i] = dev_open(devices[j].devname,
+ devices[j].included
+ ? O_RDWR : (O_RDWR|O_EXCL));
if (fdlist[i] < 0) {
- fprintf(stderr, Name ": Could not open %s for write - cannot Assemble array.\n",
- devices[j].devname);
+ pr_err("Could not open %s for write - cannot Assemble array.\n",
+ devices[j].devname);
err = 1;
break;
}
if (st->ss->external && st->ss->recover_backup)
err = st->ss->recover_backup(st, content);
else
- err = Grow_restart(st, content, fdlist, bestcnt,
- backup_file, verbose > 0);
- if (err && invalid_backup) {
- if (verbose > 0)
- fprintf(stderr, Name ": continuing"
- " without restoring backup\n");
+ err = Grow_restart(st, content, fdlist, bestcnt/2,
+ c->backup_file, c->verbose > 0);
+ if (err && c->invalid_backup) {
+ if (c->verbose > 0)
+ pr_err("continuing"
+ " without restoring backup\n");
err = 0;
}
}
i--;
if (fdlist[i]>=0) close(fdlist[i]);
}
+ free(fdlist);
if (err) {
- fprintf(stderr, Name ": Failed to restore critical section for reshape, sorry.\n");
- if (backup_file == NULL)
- fprintf(stderr," Possibly you needed to specify the --backup-file\n");
+ pr_err("Failed to restore critical section for reshape, sorry.\n");
+ if (c->backup_file == NULL)
+ cont_err("Possibly you needed to specify the --backup-file\n");
close(mdfd);
free(devices);
return err;
}
}
#endif
- /* count number of in-sync devices according to the superblock.
- * We must have this number to start the array without -s or -R
- */
- req_cnt = content->array.working_disks;
/* Almost ready to actually *do* something */
- if (!old_linux) {
- int rv;
-
- /* First, fill in the map, so that udev can find our name
- * as soon as we become active.
- */
- map_update(NULL, fd2devnum(mdfd), content->text_version,
- content->uuid, chosen_name);
-
- rv = set_array_info(mdfd, st, content);
- if (rv) {
- fprintf(stderr, Name ": failed to set array info for %s: %s\n",
- mddev, strerror(errno));
- ioctl(mdfd, STOP_ARRAY, NULL);
- close(mdfd);
- free(devices);
- return 1;
- }
- if (ident->bitmap_fd >= 0) {
- if (ioctl(mdfd, SET_BITMAP_FILE, ident->bitmap_fd) != 0) {
- fprintf(stderr, Name ": SET_BITMAP_FILE failed.\n");
- ioctl(mdfd, STOP_ARRAY, NULL);
- close(mdfd);
- free(devices);
- return 1;
- }
- } else if (ident->bitmap_file) {
- /* From config file */
- int bmfd = open(ident->bitmap_file, O_RDWR);
- if (bmfd < 0) {
- fprintf(stderr, Name ": Could not open bitmap file %s\n",
- ident->bitmap_file);
- ioctl(mdfd, STOP_ARRAY, NULL);
- close(mdfd);
- free(devices);
- return 1;
- }
- if (ioctl(mdfd, SET_BITMAP_FILE, bmfd) != 0) {
- fprintf(stderr, Name ": Failed to set bitmapfile for %s\n", mddev);
- close(bmfd);
- ioctl(mdfd, STOP_ARRAY, NULL);
- close(mdfd);
- free(devices);
- return 1;
- }
- close(bmfd);
- }
-
- /* First, add the raid disks, but add the chosen one last */
- for (i=0; i<= bestcnt; i++) {
- int j;
- if (i < bestcnt) {
- j = best[i];
- if (j == chosen_drive)
- continue;
- } else
- j = chosen_drive;
-
- if (j >= 0 /* && devices[j].uptodate */) {
- int dfd = dev_open(devices[j].devname,
- O_RDWR|O_EXCL);
- if (dfd >= 0) {
- remove_partitions(dfd);
- close(dfd);
- }
- rv = add_disk(mdfd, st, content, &devices[j].i);
-
- if (rv) {
- fprintf(stderr, Name ": failed to add "
- "%s to %s: %s\n",
- devices[j].devname,
- mddev,
- strerror(errno));
- if (i < content->array.raid_disks
- || i == bestcnt)
- okcnt--;
- else
- sparecnt--;
- } else if (verbose > 0)
- fprintf(stderr, Name ": added %s "
- "to %s as %d\n",
- devices[j].devname, mddev,
- devices[j].i.disk.raid_disk);
- } else if (verbose > 0 && i < content->array.raid_disks)
- fprintf(stderr, Name ": no uptodate device for "
- "slot %d of %s\n",
- i, mddev);
- }
+ /* First, fill in the map, so that udev can find our name
+ * as soon as we become active.
+ */
+ if (c->update && strcmp(c->update, "metadata")==0) {
+ content->array.major_version = 1;
+ content->array.minor_version = 0;
+ strcpy(content->text_version, "1.0");
+ }
- if (content->array.level == LEVEL_CONTAINER) {
- if (verbose >= 0) {
- fprintf(stderr, Name ": Container %s has been "
- "assembled with %d drive%s",
- mddev, okcnt+sparecnt, okcnt+sparecnt==1?"":"s");
- if (okcnt < (unsigned)content->array.raid_disks)
- fprintf(stderr, " (out of %d)",
- content->array.raid_disks);
- fprintf(stderr, "\n");
- }
- st->ss->free_super(st);
- sysfs_uevent(content, "change");
- wait_for(chosen_name, mdfd);
- close(mdfd);
- free(devices);
- return 0;
- }
+ map_update(&map, fd2devnm(mdfd), content->text_version,
+ content->uuid, chosen_name);
- if (runstop == 1 ||
- (runstop <= 0 &&
- ( enough(content->array.level, content->array.raid_disks,
- content->array.layout, clean, avail) &&
- (okcnt + rebuilding_cnt >= req_cnt || start_partial_ok)
- ))) {
- /* This array is good-to-go.
- * If a reshape is in progress then we might need to
- * continue monitoring it. In that case we start
- * it read-only and let the grow code make it writable.
+ rv = start_array(mdfd, mddev, content,
+ st, ident, best, bestcnt,
+ chosen_drive, devices, okcnt, sparecnt,
+ rebuilding_cnt,
+ c,
+ clean, avail, start_partial_ok,
+ pre_exist != NULL,
+ was_forced);
+ if (rv == 1 && !pre_exist)
+ ioctl(mdfd, STOP_ARRAY, NULL);
+ free(devices);
+ map_unlock(&map);
+ if (rv == 0) {
+ wait_for(chosen_name, mdfd);
+ close(mdfd);
+ if (auto_assem) {
+ int usecs = 1;
+ /* There is a nasty race with 'mdadm --monitor'.
+ * If it opens this device before we close it,
+ * it gets an incomplete open on which IO
+ * doesn't work and the capacity is
+ * wrong.
+ * If we reopen (to check for layered devices)
+ * before --monitor closes, we loose.
+ *
+ * So: wait upto 1 second for there to be
+ * a non-zero capacity.
*/
- int rv;
-#ifndef MDASSEMBLE
- if (content->reshape_active &&
- content->delta_disks <= 0) {
- rv = sysfs_set_str(content, NULL,
- "array_state", "readonly");
- if (rv == 0)
- rv = Grow_continue(mdfd, st, content,
- backup_file,
- freeze_reshape);
- } else
-#endif
- rv = ioctl(mdfd, RUN_ARRAY, NULL);
- if (rv == 0) {
- if (verbose >= 0) {
- fprintf(stderr, Name ": %s has been started with %d drive%s",
- mddev, okcnt, okcnt==1?"":"s");
- if (okcnt < (unsigned)content->array.raid_disks)
- fprintf(stderr, " (out of %d)", content->array.raid_disks);
- if (rebuilding_cnt)
- fprintf(stderr, "%s %d rebuilding", sparecnt?",":" and", rebuilding_cnt);
- if (sparecnt)
- fprintf(stderr, " and %d spare%s", sparecnt, sparecnt==1?"":"s");
- fprintf(stderr, ".\n");
- }
- if (content->reshape_active &&
- content->array.level >= 4 &&
- content->array.level <= 6) {
- /* might need to increase the size
- * of the stripe cache - default is 256
- */
- if (256 < 4 * (content->array.chunk_size/4096)) {
- struct mdinfo *sra = sysfs_read(mdfd, 0, 0);
- if (sra)
- sysfs_set_num(sra, NULL,
- "stripe_cache_size",
- (4 * content->array.chunk_size / 4096) + 1);
- sysfs_free(sra);
- }
+ while (usecs < 1000) {
+ mdfd = open(mddev, O_RDONLY);
+ if (mdfd >= 0) {
+ unsigned long long size;
+ if (get_dev_size(mdfd, NULL, &size) &&
+ size > 0)
+ break;
+ close(mdfd);
}
- if (okcnt < (unsigned)content->array.raid_disks) {
- /* If any devices did not get added
- * because the kernel rejected them based
- * on event count, try adding them
- * again providing the action policy is
- * 're-add' or greater. The bitmap
- * might allow them to be included, or
- * they will become spares.
- */
- for (i = 0; i < bestcnt; i++) {
- int j = best[i];
- if (j >= 0 && !devices[j].uptodate) {
- if (!disk_action_allows(&devices[j].i, st->ss->name, act_re_add))
- continue;
- rv = add_disk(mdfd, st, content,
- &devices[j].i);
- if (rv == 0 && verbose >= 0)
- fprintf(stderr,
- Name ": %s has been re-added.\n",
- devices[j].devname);
- }
- }
- }
- wait_for(mddev, mdfd);
- close(mdfd);
- if (auto_assem) {
- int usecs = 1;
- /* There is a nasty race with 'mdadm --monitor'.
- * If it opens this device before we close it,
- * it gets an incomplete open on which IO
- * doesn't work and the capacity is
- * wrong.
- * If we reopen (to check for layered devices)
- * before --monitor closes, we loose.
- *
- * So: wait upto 1 second for there to be
- * a non-zero capacity.
- */
- while (usecs < 1000) {
- mdfd = open(mddev, O_RDONLY);
- if (mdfd >= 0) {
- unsigned long long size;
- if (get_dev_size(mdfd, NULL, &size) &&
- size > 0)
- break;
- close(mdfd);
- }
- usleep(usecs);
- usecs <<= 1;
- }
- }
- free(devices);
- return 0;
- }
- fprintf(stderr, Name ": failed to RUN_ARRAY %s: %s\n",
- mddev, strerror(errno));
-
- if (!enough(content->array.level, content->array.raid_disks,
- content->array.layout, 1, avail))
- fprintf(stderr, Name ": Not enough devices to "
- "start the array.\n");
- else if (!enough(content->array.level,
- content->array.raid_disks,
- content->array.layout, clean,
- avail))
- fprintf(stderr, Name ": Not enough devices to "
- "start the array while not clean "
- "- consider --force.\n");
-
- if (auto_assem)
- ioctl(mdfd, STOP_ARRAY, NULL);
- close(mdfd);
- free(devices);
- return 1;
- }
- if (runstop == -1) {
- fprintf(stderr, Name ": %s assembled from %d drive%s",
- mddev, okcnt, okcnt==1?"":"s");
- if (okcnt != (unsigned)content->array.raid_disks)
- fprintf(stderr, " (out of %d)", content->array.raid_disks);
- fprintf(stderr, ", but not started.\n");
- close(mdfd);
- free(devices);
- return 0;
- }
- if (verbose >= -1) {
- fprintf(stderr, Name ": %s assembled from %d drive%s", mddev, okcnt, okcnt==1?"":"s");
- if (rebuilding_cnt)
- fprintf(stderr, "%s %d rebuilding", sparecnt?", ":" and ", rebuilding_cnt);
- if (sparecnt)
- fprintf(stderr, " and %d spare%s", sparecnt, sparecnt==1?"":"s");
- if (!enough(content->array.level, content->array.raid_disks,
- content->array.layout, 1, avail))
- fprintf(stderr, " - not enough to start the array.\n");
- else if (!enough(content->array.level,
- content->array.raid_disks,
- content->array.layout, clean,
- avail))
- fprintf(stderr, " - not enough to start the "
- "array while not clean - consider "
- "--force.\n");
- else {
- if (req_cnt == (unsigned)content->array.raid_disks)
- fprintf(stderr, " - need all %d to start it", req_cnt);
- else
- fprintf(stderr, " - need %d of %d to start", req_cnt, content->array.raid_disks);
- fprintf(stderr, " (use --run to insist).\n");
+ usleep(usecs);
+ usecs <<= 1;
}
}
- if (auto_assem)
- ioctl(mdfd, STOP_ARRAY, NULL);
+ } else
close(mdfd);
- free(devices);
- return 1;
- } else {
- /* The "chosen_drive" is a good choice, and if necessary, the superblock has
- * been updated to point to the current locations of devices.
- * so we can just start the array
- */
- unsigned long dev;
- dev = makedev(devices[chosen_drive].i.disk.major,
- devices[chosen_drive].i.disk.minor);
- if (ioctl(mdfd, START_ARRAY, dev)) {
- fprintf(stderr, Name ": Cannot start array: %s\n",
- strerror(errno));
- }
- }
- close(mdfd);
- free(devices);
- return 0;
+ /* '2' means 'OK, but not started yet' */
+ return rv == 2 ? 0 : rv;
}
#ifndef MDASSEMBLE
int assemble_container_content(struct supertype *st, int mdfd,
- struct mdinfo *content, int runstop,
- char *chosen_name, int verbose,
- char *backup_file, int freeze_reshape)
+ struct mdinfo *content, struct context *c,
+ char *chosen_name, int *result)
{
struct mdinfo *dev, *sra;
int working = 0, preexist = 0;
int expansion = 0;
struct map_ent *map = NULL;
int old_raid_disks;
-
- sysfs_init(content, mdfd, 0);
-
- sra = sysfs_read(mdfd, 0, GET_VERSION);
- if (sra == NULL || strcmp(sra->text_version, content->text_version) != 0)
+ int start_reshape;
+ char *avail = NULL;
+ int err;
+
+ sysfs_init(content, mdfd, NULL);
+
+ sra = sysfs_read(mdfd, NULL, GET_VERSION);
+ if (sra == NULL || strcmp(sra->text_version, content->text_version) != 0) {
+ if (content->array.major_version == -1 &&
+ content->array.minor_version == -2 &&
+ c->readonly &&
+ content->text_version[0] == '/')
+ content->text_version[0] = '-';
if (sysfs_set_array(content, md_get_version(mdfd)) != 0) {
if (sra)
sysfs_free(sra);
return 1;
}
+ }
- if (st->ss->external && content->recovery_blocked)
+ /* There are two types of reshape: container wide or sub-array specific
+ * Check if metadata requests blocking container wide reshapes
+ */
+ start_reshape = (content->reshape_active &&
+ !((content->reshape_active == CONTAINER_RESHAPE) &&
+ (content->array.state & (1<<MD_SB_BLOCK_CONTAINER_RESHAPE))));
+
+ /* Block subarray here if it is under reshape now
+ * Do not allow for any changes in this array
+ */
+ if (st->ss->external && content->recovery_blocked && start_reshape)
block_subarray(content);
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 == 0)
+ }
+ if (working + expansion == 0 && c->runstop <= 0) {
+ free(avail);
return 1;/* Nothing new, don't try to start */
-
- map_update(&map, fd2devnum(mdfd),
+ }
+ map_update(&map, fd2devnm(mdfd),
content->text_version,
content->uuid, chosen_name);
- if (runstop > 0 ||
- (working + preexist + expansion) >=
- content->array.working_disks) {
- int err;
- int start_reshape;
- /* There are two types of reshape: container wide or sub-array specific
- * Check if metadata requests blocking container wide reshapes
- */
- start_reshape = (content->reshape_active &&
- !((content->reshape_active == CONTAINER_RESHAPE) &&
- (content->array.state & (1<<MD_SB_BLOCK_CONTAINER_RESHAPE))));
- if (start_reshape) {
- int spare = content->array.raid_disks + expansion;
- if (restore_backup(st, content,
- working,
- spare, backup_file, verbose) == 1)
- return 1;
+ 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);
+ fprintf(stderr, " but not started\n");
+ }
+ 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 safe to start\n");
+ }
+ return 1;
+ }
- err = sysfs_set_str(content, NULL,
- "array_state", "readonly");
- if (err)
- return 1;
- if (st->ss->external) {
- if (!mdmon_running(st->container_dev))
- start_mdmon(st->container_dev);
- ping_monitor_by_id(st->container_dev);
- if (mdmon_running(st->container_dev) &&
- st->update_tail == NULL)
- st->update_tail = &st->updates;
- }
+ 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, backup_file,
- freeze_reshape);
- } else switch(content->array.level) {
+ 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",
- "active");
+ c->readonly ? "readonly" : "active");
break;
default:
err = sysfs_set_str(content, NULL, "array_state",
- "readonly");
+ "readonly");
/* start mdmon if needed. */
if (!err) {
- if (!mdmon_running(st->container_dev))
- start_mdmon(st->container_dev);
- ping_monitor_by_id(st->container_dev);
+ 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);
- if (verbose >= 0) {
- if (err)
- fprintf(stderr, Name
- ": array %s now has %d device%s",
- chosen_name, working + preexist,
- working + preexist == 1 ? "":"s");
- else
- fprintf(stderr, Name
- ": 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 */
- } else {
- if (verbose >= 0) {
- fprintf(stderr, Name
- ": %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");
- }
- return 1;
+ 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