/*
* mdadm - manage Linux "md" devices aka RAID arrays.
*
- * Copyright (C) 2001-2002 Neil Brown <neilb@cse.unsw.edu.au>
+ * Copyright (C) 2001-2006 Neil Brown <neilb@suse.de>
*
*
* This program is free software; you can redistribute it and/or modify
*/
#include "mdadm.h"
+#include <ctype.h>
-int Assemble(struct supertype *st, char *mddev, int mdfd,
- mddev_ident_t ident, char *conffile,
- mddev_dev_t devlist,
+static int name_matches(char *found, char *required, char *homehost)
+{
+ /* See if the name found matches the required name, possibly
+ * prefixed with 'homehost'
+ */
+ char fnd[33];
+
+ strncpy(fnd, found, 32);
+ fnd[32] = 0;
+ if (strcmp(found, required)==0)
+ return 1;
+ if (homehost) {
+ int l = strlen(homehost);
+ if (l < 32 && fnd[l] == ':' &&
+ strcmp(fnd+l+1, required)==0)
+ return 1;
+ }
+ return 0;
+}
+
+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 *ent;
+ int busy = 0;
+
+ for (ent = mdstat; ent; ent = ent->next) {
+ if (ent->metadata_version == NULL)
+ continue;
+ if (strncmp(ent->metadata_version, "external:", 9) != 0)
+ continue;
+ if (!is_subarray(&ent->metadata_version[9]))
+ continue;
+ /* Skip first char - it can be '/' or '-' */
+ if (strcmp(&ent->metadata_version[10], metadata_version+1) == 0) {
+ busy = 1;
+ break;
+ }
+ }
+ free_mdstat(mdstat);
+
+ return busy;
+}
+
+int Assemble(struct supertype *st, char *mddev,
+ mddev_ident_t ident,
+ mddev_dev_t devlist, char *backup_file,
int readonly, int runstop,
- char *update,
+ char *update, char *homehost,
int verbose, int force)
{
/*
*
* 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
+ * If !devlist and scan and uuidset, get list of devs from conf-file
*
* For each device:
* Check superblock - discard if bad
* START_ARRAY
*
*/
+ int mdfd;
+ int clean;
+ int auto_assem = (mddev == NULL);
int old_linux = 0;
- int vers;
- void *first_super = NULL, *super = NULL;
+ int vers = vers; /* Keep gcc quite - it really is initialised */
struct {
char *devname;
- unsigned int major, minor;
- unsigned int oldmajor, oldminor;
- long long events;
- int uptodate;
- int state;
- int raid_disk;
+ int uptodate; /* set once we decide that this device is as
+ * recent as everything else in the array.
+ */
+ struct mdinfo i;
} *devices;
int *best = NULL; /* indexed by raid_disk */
unsigned int bestcnt = 0;
int chosen_drive;
int change = 0;
int inargv = 0;
- int start_partial_ok = force || devlist==NULL;
+ int report_missmatch;
+ int bitmap_done;
+ int start_partial_ok = (runstop >= 0) &&
+ (force || devlist==NULL || auto_assem);
unsigned int num_devs;
mddev_dev_t tmpdev;
struct mdinfo info;
-
- vers = md_get_version(mdfd);
- if (vers <= 0) {
- fprintf(stderr, Name ": %s appears not to be an md device.\n", mddev);
- return 1;
- }
- if (vers < 9000) {
- fprintf(stderr, Name ": Assemble requires driver version 0.90.0 or later.\n"
- " Upgrade your kernel or try --build\n");
- return 1;
- }
+ struct mdinfo *content = NULL;
+ mdu_array_info_t tmp_inf;
+ char *avail;
+ int nextspare = 0;
+ char *name = NULL;
+ int trustworthy;
+ char chosen_name[1024];
+
if (get_linux_version() < 2004000)
old_linux = 1;
- if (ioctl(mdfd, GET_ARRAY_INFO, &info.array)>=0) {
- fprintf(stderr, Name ": device %s already active - cannot assemble it\n",
- mddev);
- return 1;
- }
- ioctl(mdfd, STOP_ARRAY, NULL); /* just incase it was started but has no content */
-
/*
* If any subdevs are listed, then any that don't
* match ident are discarded. Remainder must all match and
ident->super_minor < 0 &&
ident->devices == NULL) {
fprintf(stderr, Name ": No identity information available for %s - cannot assemble.\n",
- mddev);
+ mddev ? mddev : "further assembly");
return 1;
}
+
if (devlist == NULL)
- devlist = conf_get_devs(conffile);
- else inargv = 1;
+ 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) {
- num_devs++;
+ if (tmpdev->used)
+ tmpdev->used = 2;
+ else
+ num_devs++;
tmpdev = tmpdev->next;
}
devices = malloc(num_devs * sizeof(*devices));
if (!st && ident->st) st = ident->st;
- if (verbose)
+ if (verbose>0)
fprintf(stderr, Name ": looking for devices for %s\n",
- mddev);
+ mddev ? mddev : "further assembly");
- while ( devlist) {
- char *devname;
+ /* 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'.
+ */
+ for (tmpdev = devlist;
+ tmpdev;
+ tmpdev = tmpdev->next) {
+ char *devname = tmpdev->devname;
int dfd;
struct stat stb;
- struct supertype *tst = st;
+ struct supertype *tst = dup_super(st);
- devname = devlist->devname;
- devlist = devlist->next;
+ if (tmpdev->used > 1) continue;
if (ident->devices &&
!match_oneof(ident->devices, devname)) {
- if (inargv || verbose)
+ if (report_missmatch)
fprintf(stderr, Name ": %s is not one of %s\n", devname, ident->devices);
continue;
}
- if (super) {
- free(super);
- super = NULL;
- }
-
- dfd = open(devname, O_RDONLY|O_EXCL, 0);
+ dfd = dev_open(devname, O_RDONLY|O_EXCL);
if (dfd < 0) {
- if (inargv || verbose)
+ if (report_missmatch)
fprintf(stderr, Name ": 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));
- close(dfd);
+ tmpdev->used = 2;
} else if ((stb.st_mode & S_IFMT) != S_IFBLK) {
fprintf(stderr, Name ": %s is not a block device.\n",
devname);
- close(dfd);
+ tmpdev->used = 2;
} else if (!tst && (tst = guess_super(dfd)) == NULL) {
- if (inargv || verbose)
- fprintf(stderr, Name ": no recogniseable superblock\n");
- } else if (tst->ss->load_super(tst,dfd, &super, NULL)) {
- if (inargv || verbose)
+ if (report_missmatch)
+ fprintf(stderr, Name ": 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);
- close(dfd);
} else {
- tst->ss->getinfo_super(&info, super);
- close(dfd);
+ content = &info;
+ memset(content, 0, sizeof(*content));
+ tst->ss->getinfo_super(tst, content);
+ }
+ if (dfd >= 0) close(dfd);
+
+ if (tst && tst->sb && tst->ss->container_content
+ && tst->loaded_container) {
+ /* tmpdev is a container. We need to be either
+ * looking for a member, or auto-assembling
+ */
+ 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);
+ goto loop;
+ }
+
+ 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);
+ goto loop;
+ }
+ if (ident->container[0] != '/') {
+ /* we have a uuid */
+ int uuid[4];
+ 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.
+ */
+ next_member:
+ if (tmpdev->content)
+ content = tmpdev->content;
+ else
+ content = tst->ss->container_content(tst);
+
+ tmpdev->content = content->next;
+ if (tmpdev->content == NULL)
+ tmpdev->used = 1;
+
+ } else if (ident->container || ident->member) {
+ /* No chance of this matching if we don't have
+ * a container */
+ if (report_missmatch)
+ fprintf(stderr, Name "%s is not a container, and one is required.\n",
+ devname);
+ goto loop;
}
- if (ident->uuid_set &&
- (!super || same_uuid(info.uuid, ident->uuid, tst->ss->swapuuid)==0)) {
- if (inargv || verbose)
+ if (ident->uuid_set && (!update || strcmp(update, "uuid")!= 0) &&
+ (!tst || !tst->sb ||
+ same_uuid(content->uuid, ident->uuid, tst->ss->swapuuid)==0)) {
+ if (report_missmatch)
fprintf(stderr, Name ": %s has wrong uuid.\n",
devname);
- continue;
+ goto loop;
+ }
+ if (ident->name[0] && (!update || strcmp(update, "name")!= 0) &&
+ (!tst || !tst->sb ||
+ name_matches(content->name, ident->name, homehost)==0)) {
+ if (report_missmatch)
+ fprintf(stderr, Name ": %s has wrong name.\n",
+ devname);
+ goto loop;
}
if (ident->super_minor != UnSet &&
- (!super || ident->super_minor != info.array.md_minor)) {
- if (inargv || verbose)
+ (!tst || !tst->sb ||
+ ident->super_minor != content->array.md_minor)) {
+ if (report_missmatch)
fprintf(stderr, Name ": %s has wrong super-minor.\n",
devname);
- continue;
+ goto loop;
}
if (ident->level != UnSet &&
- (!super|| ident->level != info.array.level)) {
- if (inargv || verbose)
+ (!tst || !tst->sb ||
+ ident->level != content->array.level)) {
+ if (report_missmatch)
fprintf(stderr, Name ": %s has wrong raid level.\n",
devname);
- continue;
+ goto loop;
}
if (ident->raid_disks != UnSet &&
- (!super || ident->raid_disks!= info.array.raid_disks)) {
- if (inargv || verbose)
+ (!tst || !tst->sb ||
+ ident->raid_disks!= content->array.raid_disks)) {
+ if (report_missmatch)
fprintf(stderr, Name ": %s requires wrong number of drives.\n",
devname);
- continue;
+ goto loop;
}
-
- /* If we are this far, then we are commited to this device.
+ if (auto_assem) {
+ if (tst == NULL || tst->sb == NULL)
+ continue;
+ }
+ /* If we are this far, then we are nearly commited to this device.
* If the super_block doesn't exist, or doesn't match others,
- * then we cannot continue
+ * then we probably cannot continue
+ * However if one of the arrays is for the homehost, and
+ * the other isn't that can disambiguate.
*/
- if (!super) {
+ if (!tst || !tst->sb) {
fprintf(stderr, Name ": %s has no superblock - assembly aborted\n",
devname);
- free(first_super);
+ if (st)
+ st->ss->free_super(st);
return 1;
}
- st = tst; /* commit to this format, if haven't already */
- if (st->ss->compare_super(&first_super, super)) {
+
+ if (tst && tst->sb && tst->ss->container_content
+ && tst->loaded_container) {
+ /* we have the one container we need, don't keep
+ * looking. If the chosen member is active, skip.
+ */
+ if (is_member_busy(content->text_version)) {
+ if (auto_assem)
+ goto loop;
+ fprintf(stderr, Name ": member %s in %s is already assembled\n",
+ content->text_version,
+ devname);
+ tst->ss->free_super(tst);
+ return 1;
+ }
+ st = tst; tst = NULL;
+ if (!auto_assem && tmpdev->next != NULL) {
+ fprintf(stderr, Name ": %s is a container, but is not "
+ "only device given: confused and aborting\n",
+ devname);
+ st->ss->free_super(st);
+ return 1;
+ }
+ break;
+ }
+ if (st == NULL)
+ st = dup_super(tst);
+ if (st->minor_version == -1)
+ st->minor_version = tst->minor_version;
+ if (st->ss != tst->ss ||
+ st->minor_version != tst->minor_version ||
+ st->ss->compare_super(st, tst) != 0) {
+ /* Some mismatch. If exactly one array matches this host,
+ * we can resolve on that one.
+ * Or, if we are auto assembling, we just ignore the second
+ * for now.
+ */
+ if (auto_assem)
+ goto loop;
+ if (homehost) {
+ int first = st->ss->match_home(st, homehost);
+ int last = tst->ss->match_home(tst, 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);
+ goto loop;
+ } else { /* reject all those sofar */
+ mddev_dev_t td;
+ if (report_missmatch)
+ fprintf(stderr, Name ": %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;
+ tmpdev->used = 1;
+ goto loop;
+ }
+ }
+ }
fprintf(stderr, Name ": superblock on %s doesn't match others - assembly aborted\n",
devname);
- free(super);
- free(first_super);
+ tst->ss->free_super(tst);
+ st->ss->free_super(st);
return 1;
}
+ tmpdev->used = 1;
+
+ loop:
+ if (tmpdev->content)
+ goto next_member;
+ if (tst)
+ tst->ss->free_super(tst);
+ }
+
+ if (!st || !st->sb || !content)
+ return 2;
+
+ /* Now need to open array the device. Use create_mddev */
+ if (content == &info)
+ st->ss->getinfo_super(st, content);
+
+ trustworthy = FOREIGN;
+ switch (st->ss->match_home(st, homehost)) {
+ case 0:
+ trustworthy = FOREIGN;
+ name = content->name;
+ break;
+ case 1:
+ trustworthy = LOCAL;
+ name = strchr(content->name, ':');
+ if (name)
+ name++;
+ else
+ name = content->name;
+ break;
+ case -1:
+ trustworthy = FOREIGN;
+ break;
+ }
+ if (!auto_assem && trustworthy == FOREIGN)
+ /* If the array is listed in mdadm or on
+ * command line, then we trust the name
+ * even if the array doesn't look local
+ */
+ trustworthy = LOCAL;
+
+ if (content->name[0] == 0 &&
+ content->array.level == LEVEL_CONTAINER) {
+ name = content->text_version;
+ trustworthy = METADATA;
+ }
+ mdfd = create_mddev(mddev, name, ident->autof, trustworthy,
+ chosen_name);
+ if (mdfd < 0) {
+ st->ss->free_super(st);
+ free(devices);
+ 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 (ioctl(mdfd, GET_ARRAY_INFO, &tmp_inf)==0) {
+ 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);
+ free(devices);
+ if (auto_assem)
+ goto try_again;
+ return 1;
+ }
+ ioctl(mdfd, STOP_ARRAY, NULL); /* just incase it was started but has no content */
+
+#ifndef MDASSEMBLE
+ if (content != &info) {
+ /* This is a member of a container. Try starting the array. */
+ return assemble_container_content(st, mdfd, content, runstop,
+ chosen_name, verbose);
+ }
+#endif
+ /* Ok, no bad inconsistancy, we can try updating etc */
+ bitmap_done = 0;
+ for (tmpdev = devlist; tmpdev; tmpdev=tmpdev->next) if (tmpdev->used == 1) {
+ char *devname = tmpdev->devname;
+ struct stat stb;
/* looks like a good enough match to update the super block if needed */
+#ifndef MDASSEMBLE
if (update) {
+ int dfd;
/* prepare useful information in info structures */
struct stat stb2;
+ struct supertype *tst;
fstat(mdfd, &stb2);
- info.array.md_minor = minor(stb2.st_rdev);
-
- st->ss->update_super(&info, super, update, devname, verbose);
-
- dfd = open(devname, O_RDWR|O_EXCL, 0);
- if (dfd < 0)
+
+ if (strcmp(update, "uuid")==0 &&
+ !ident->uuid_set) {
+ int rfd;
+ if ((rfd = open("/dev/urandom", O_RDONLY)) < 0 ||
+ read(rfd, ident->uuid, 16) != 16) {
+ *(__u32*)(ident->uuid) = random();
+ *(__u32*)(ident->uuid+1) = random();
+ *(__u32*)(ident->uuid+2) = random();
+ *(__u32*)(ident->uuid+3) = random();
+ }
+ if (rfd >= 0) close(rfd);
+ }
+ dfd = dev_open(devname, O_RDWR|O_EXCL);
+
+ remove_partitions(dfd);
+
+ tst = dup_super(st);
+ tst->ss->load_super(tst, dfd, NULL);
+ tst->ss->getinfo_super(tst, content);
+
+ memcpy(content->uuid, ident->uuid, 16);
+ strcpy(content->name, ident->name);
+ content->array.md_minor = minor(stb2.st_rdev);
+
+ tst->ss->update_super(tst, content, update,
+ devname, verbose,
+ ident->uuid_set, homehost);
+ if (strcmp(update, "uuid")==0 &&
+ !ident->uuid_set) {
+ ident->uuid_set = 1;
+ memcpy(ident->uuid, content->uuid, 16);
+ }
+ if (dfd < 0)
fprintf(stderr, Name ": Cannot open %s for superblock update\n",
devname);
- else if (st->ss->store_super(st, dfd, super))
+ else if (tst->ss->store_super(tst, dfd))
fprintf(stderr, Name ": Could not re-write superblock on %s.\n",
devname);
if (dfd >= 0)
close(dfd);
+
+ if (strcmp(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");
+ 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);
+
+ remove_partitions(dfd);
+
+ tst->ss->load_super(tst, dfd, NULL);
+ tst->ss->getinfo_super(tst, content);
+ tst->ss->free_super(tst);
+ close(dfd);
}
- if (verbose)
+ stat(devname, &stb);
+
+ if (verbose > 0)
fprintf(stderr, Name ": %s is identified as a member of %s, slot %d.\n",
- devname, mddev, info.disk.raid_disk);
+ devname, mddev, content->disk.raid_disk);
devices[devcnt].devname = devname;
- devices[devcnt].major = major(stb.st_rdev);
- devices[devcnt].minor = minor(stb.st_rdev);
- devices[devcnt].oldmajor = info.disk.major;
- devices[devcnt].oldminor = info.disk.minor;
- devices[devcnt].events = info.events;
- devices[devcnt].raid_disk = info.disk.raid_disk;
devices[devcnt].uptodate = 0;
- devices[devcnt].state = info.disk.state;
+ 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].events
- > devices[most_recent].events)
+ if (devices[devcnt].i.events
+ > devices[most_recent].i.events)
most_recent = devcnt;
}
- if (info.array.level == -4)
+ if (content->array.level == -4)
/* with multipath, the raid_disk from the superblock is meaningless */
i = devcnt;
else
- i = devices[devcnt].raid_disk;
+ i = devices[devcnt].i.disk.raid_disk;
+ if (i+1 == 0) {
+ if (nextspare < content->array.raid_disks)
+ nextspare = content->array.raid_disks;
+ i = nextspare++;
+ } else {
+ if (i >= content->array.raid_disks &&
+ i >= nextspare)
+ nextspare = i+1;
+ }
if (i < 10000) {
if (i >= bestcnt) {
unsigned int newbestcnt = i+10;
best = newbest;
bestcnt = newbestcnt;
}
+ if (best[i] >=0 &&
+ devices[best[i]].i.events
+ == devices[devcnt].i.events
+ && (devices[best[i]].i.disk.minor
+ != devices[devcnt].i.disk.minor)
+ && st->ss == &super0
+ && content->array.level != LEVEL_MULTIPATH) {
+ /* two different devices with identical superblock.
+ * 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"
+ );
+ close(mdfd);
+ return 1;
+ }
if (best[i] == -1
- || devices[best[i]].events < devices[devcnt].events)
+ || (devices[best[i]].i.events
+ < devices[devcnt].i.events))
best[i] = devcnt;
}
devcnt++;
}
- if (super)
- free(super);
- super = NULL;
-
if (devcnt == 0) {
fprintf(stderr, Name ": no devices found for %s\n",
mddev);
- free(first_super);
+ if (st)
+ st->ss->free_super(st);
+ close(mdfd);
return 1;
}
- st->ss->getinfo_super(&info, first_super);
+ if (update && strcmp(update, "byteorder")==0)
+ st->minor_version = 90;
+
+ st->ss->getinfo_super(st, content);
+ 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;
for (i=0; i< bestcnt ;i++) {
int j = best[i];
- int event_margin = !force;
+ 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 (info.array.level != -4)
- if (!(devices[j].state & (1<<MD_DISK_SYNC))) {
- if (!(devices[j].state & (1<<MD_DISK_FAULTY)))
+ if (content->array.level != -4)
+ if (!(devices[j].i.disk.state & (1<<MD_DISK_SYNC))) {
+ if (!(devices[j].i.disk.state
+ & (1<<MD_DISK_FAULTY)))
sparecnt++;
continue;
}
- if (devices[j].events+event_margin >=
- devices[most_recent].events) {
+ if (devices[j].i.events+event_margin >=
+ devices[most_recent].i.events) {
devices[j].uptodate = 1;
- if (i < info.array.raid_disks)
+ if (i < content->array.raid_disks) {
okcnt++;
- else
+ avail[i]=1;
+ } else
sparecnt++;
}
}
- while (force && !enough(info.array.level, info.array.raid_disks, okcnt)) {
+ while (force && !enough(content->array.level, content->array.raid_disks,
+ content->array.layout, 1,
+ avail, okcnt)) {
/* Choose the newest best drive which is
* not up-to-date, update the superblock
* and add it.
*/
int fd;
+ struct supertype *tst;
+ long long current_events;
chosen_drive = -1;
- for (i=0; i<info.array.raid_disks && i < bestcnt; i++) {
+ for (i=0; i<content->array.raid_disks && i < bestcnt; i++) {
int j = best[i];
if (j>=0 &&
!devices[j].uptodate &&
- devices[j].events > 0 &&
+ devices[j].i.events > 0 &&
(chosen_drive < 0 ||
- devices[j].events > devices[chosen_drive].events))
+ devices[j].i.events
+ > devices[chosen_drive].i.events))
chosen_drive = j;
}
if (chosen_drive < 0)
break;
- fprintf(stderr, Name ": forcing event count in %s(%d) from %d upto %d\n",
- devices[chosen_drive].devname, devices[chosen_drive].raid_disk,
- (int)(devices[chosen_drive].events),
- (int)(devices[most_recent].events));
- fd = open(devices[chosen_drive].devname, O_RDWR|O_EXCL);
+ 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 (fd < 0) {
fprintf(stderr, Name ": Couldn't open %s for write - not updating\n",
devices[chosen_drive].devname);
- devices[chosen_drive].events = 0;
+ devices[chosen_drive].i.events = 0;
continue;
}
- if (st->ss->load_super(st,fd, &super, NULL)) {
+ 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);
- devices[chosen_drive].events = 0;
+ devices[chosen_drive].i.events = 0;
continue;
}
- info.events = devices[most_recent].events;
- st->ss->update_super(&info, super, "force", devices[chosen_drive].devname, verbose);
+ content->events = devices[most_recent].i.events;
+ tst->ss->update_super(tst, content, "force-one",
+ devices[chosen_drive].devname, verbose,
+ 0, NULL);
- if (st->ss->store_super(st, fd, super)) {
+ if (tst->ss->store_super(tst, fd)) {
close(fd);
fprintf(stderr, Name ": Could not re-write superblock on %s\n",
devices[chosen_drive].devname);
- devices[chosen_drive].events = 0;
- free(super);
+ devices[chosen_drive].i.events = 0;
+ tst->ss->free_super(tst);
continue;
}
close(fd);
- devices[chosen_drive].events = devices[most_recent].events;
+ devices[chosen_drive].i.events = devices[most_recent].i.events;
devices[chosen_drive].uptodate = 1;
+ avail[chosen_drive] = 1;
okcnt++;
- free(super);
+ tst->ss->free_super(tst);
+
+ /* 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++) {
+ int j = best[i];
+ if (j >= 0 &&
+ !devices[j].uptodate &&
+ devices[j].i.events > 0 &&
+ devices[j].i.events == current_events) {
+ chosen_drive = j;
+ goto add_another;
+ }
+ }
}
/* Now we want to look at the superblock which the kernel will base things on
* superblock.
*/
chosen_drive = -1;
- super = NULL;
+ st->ss->free_super(st);
for (i=0; chosen_drive < 0 && i<bestcnt; i++) {
int j = best[i];
int fd;
if (!devices[j].uptodate)
continue;
chosen_drive = j;
- if ((fd=open(devices[j].devname, O_RDONLY|O_EXCL))< 0) {
+ 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));
+ close(mdfd);
return 1;
}
- if (st->ss->load_super(st,fd, &super, NULL)) {
+ if (st->ss->load_super(st,fd, NULL)) {
close(fd);
fprintf(stderr, Name ": RAID superblock has disappeared from %s\n",
devices[j].devname);
+ close(mdfd);
return 1;
}
close(fd);
}
- if (super == NULL) {
+ if (st->sb == NULL) {
fprintf(stderr, Name ": No suitable drives found for %s\n", mddev);
+ close(mdfd);
return 1;
}
- st->ss->getinfo_super(&info, super);
+ st->ss->getinfo_super(st, content);
+#ifndef MDASSEMBLE
+ sysfs_init(content, mdfd, 0);
+#endif
for (i=0; i<bestcnt; i++) {
int j = best[i];
unsigned int desired_state;
- if (i < info.array.raid_disks)
+ if (i < content->array.raid_disks)
desired_state = (1<<MD_DISK_ACTIVE) | (1<<MD_DISK_SYNC);
else
desired_state = 0;
continue;
if (!devices[j].uptodate)
continue;
- info.disk.number = i;
- info.disk.raid_disk = i;
- info.disk.state = desired_state;
- if (devices[j].uptodate &&
- st->ss->update_super(&info, super, "assemble", NULL, 0)) {
+ devices[j].i.disk.state = desired_state;
+
+ if (st->ss->update_super(st, &devices[j].i, "assemble", NULL,
+ verbose, 0, NULL)) {
if (force) {
- fprintf(stderr, Name ": "
- "clearing FAULTY flag for device %d in %s for %s\n",
- j, mddev, devices[j].devname);
+ if (verbose >= 0)
+ fprintf(stderr, Name ": "
+ "clearing FAULTY flag for device %d in %s for %s\n",
+ j, mddev, devices[j].devname);
change = 1;
} else {
- fprintf(stderr, Name ": "
- "device %d in %s has wrong state in superblock, but %s seems ok\n",
- i, mddev, devices[j].devname);
+ 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 0
- if (!devices[j].uptodate &&
- !(super.disks[i].state & (1 << MD_DISK_FAULTY))) {
+ 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);
}
#endif
}
- if (force && okcnt == info.array.raid_disks-1) {
- /* FIXME check event count */
- change += st->ss->update_super(&info, super, "force",
- devices[chosen_drive].devname, 0);
+ if (force && !clean &&
+ !enough(content->array.level, content->array.raid_disks,
+ content->array.layout, clean,
+ avail, okcnt)) {
+ change += st->ss->update_super(st, content, "force-array",
+ devices[chosen_drive].devname, verbose,
+ 0, NULL);
+ clean = 1;
}
if (change) {
int fd;
- fd = open(devices[chosen_drive].devname, O_RDWR|O_EXCL);
+ fd = dev_open(devices[chosen_drive].devname, O_RDWR|O_EXCL);
if (fd < 0) {
- fprintf(stderr, Name ": Could open %s for write - cannot Assemble array.\n",
+ fprintf(stderr, Name ": Could not open %s for write - cannot Assemble array.\n",
devices[chosen_drive].devname);
+ close(mdfd);
return 1;
}
- if (st->ss->store_super(st, fd, super)) {
+ if (st->ss->store_super(st, fd)) {
close(fd);
fprintf(stderr, Name ": Could not re-write superblock on %s\n",
devices[chosen_drive].devname);
+ close(mdfd);
return 1;
}
close(fd);
}
+ /* If we are in the middle of a reshape we may need to restore saved data
+ * that was moved aside due to the reshape overwriting live data
+ * The code of doing this lives in Grow.c
+ */
+#ifndef MDASSEMBLE
+ if (content->reshape_active) {
+ int err = 0;
+ int *fdlist = malloc(sizeof(int)* bestcnt);
+ for (i=0; i<bestcnt; i++) {
+ int j = best[i];
+ if (j >= 0) {
+ fdlist[i] = dev_open(devices[j].devname, O_RDWR|O_EXCL);
+ if (fdlist[i] < 0) {
+ fprintf(stderr, Name ": Could not open %s for write - cannot Assemble array.\n",
+ devices[j].devname);
+ err = 1;
+ break;
+ }
+ } else
+ fdlist[i] = -1;
+ }
+ if (!err)
+ err = Grow_restart(st, content, fdlist, bestcnt, backup_file);
+ while (i>0) {
+ i--;
+ if (fdlist[i]>=0) close(fdlist[i]);
+ }
+ if (err) {
+ fprintf(stderr, Name ": Failed to restore critical section for reshape, sorry.\n");
+ close(mdfd);
+ 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 = info.array.working_disks;
+ req_cnt = content->array.working_disks;
/* Almost ready to actually *do* something */
if (!old_linux) {
int rv;
- if ((vers % 100) >= 1) { /* can use different versions */
- mdu_array_info_t inf;
- memset(&inf, 0, sizeof(inf));
- inf.major_version = st->ss->major;
- inf.minor_version = st->minor_version;
- rv = ioctl(mdfd, SET_ARRAY_INFO, &inf);
- } else
- rv = ioctl(mdfd, SET_ARRAY_INFO, NULL);
+ /* 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 ": SET_ARRAY_INFO failed for %s: %s\n",
+ fprintf(stderr, Name ": failed to set array info for %s: %s\n",
mddev, strerror(errno));
+ close(mdfd);
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");
+ close(mdfd);
+ 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);
+ close(mdfd);
return 1;
}
+ if (ioctl(mdfd, SET_BITMAP_FILE, bmfd) != 0) {
+ fprintf(stderr, Name ": Failed to set bitmapfile for %s\n", mddev);
+ close(bmfd);
+ close(mdfd);
+ return 1;
+ }
+ close(bmfd);
}
-
+
/* First, add the raid disks, but add the chosen one last */
for (i=0; i<= bestcnt; i++) {
int j;
j = chosen_drive;
if (j >= 0 /* && devices[j].uptodate */) {
- mdu_disk_info_t disk;
- memset(&disk, 0, sizeof(disk));
- disk.major = devices[j].major;
- disk.minor = devices[j].minor;
- if (ioctl(mdfd, ADD_NEW_DISK, &disk)!=0) {
- fprintf(stderr, Name ": failed to add %s to %s: %s\n",
+ 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 < info.array.raid_disks || i == bestcnt)
+ if (i < content->array.raid_disks
+ || i == bestcnt)
okcnt--;
else
sparecnt--;
- } else if (verbose)
- fprintf(stderr, Name ": added %s to %s as %d\n",
- devices[j].devname, mddev, devices[j].raid_disk);
- } else if (verbose && i < info.array.raid_disks)
- fprintf(stderr, Name ": no uptodate device for slot %d of %s\n",
+ } 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);
}
-
+
+ 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 < content->array.raid_disks)
+ fprintf(stderr, " (out of %d)",
+ content->array.raid_disks);
+ fprintf(stderr, "\n");
+ }
+ sysfs_uevent(content, "change");
+ close(mdfd);
+ return 0;
+ }
+
if (runstop == 1 ||
- (runstop == 0 &&
- ( enough(info.array.level, info.array.raid_disks, okcnt) &&
+ (runstop <= 0 &&
+ ( enough(content->array.level, content->array.raid_disks,
+ content->array.layout, clean, avail, okcnt) &&
(okcnt >= req_cnt || start_partial_ok)
))) {
if (ioctl(mdfd, RUN_ARRAY, NULL)==0) {
- fprintf(stderr, Name ": %s has been started with %d drive%s",
- mddev, okcnt, okcnt==1?"":"s");
- if (okcnt < info.array.raid_disks)
- fprintf(stderr, " (out of %d)", info.array.raid_disks);
- if (sparecnt)
- fprintf(stderr, " and %d spare%s", sparecnt, sparecnt==1?"":"s");
- fprintf(stderr, ".\n");
+ if (verbose >= 0) {
+ fprintf(stderr, Name ": %s has been started with %d drive%s",
+ mddev, okcnt, okcnt==1?"":"s");
+ if (okcnt < content->array.raid_disks)
+ fprintf(stderr, " (out of %d)", content->array.raid_disks);
+ if (sparecnt)
+ fprintf(stderr, " and %d spare%s", sparecnt, sparecnt==1?"":"s");
+ fprintf(stderr, ".\n");
+ }
+ 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;
+ }
+ }
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, okcnt))
+ 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, okcnt))
+ 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);
return 1;
}
if (runstop == -1) {
- fprintf(stderr, Name ": %s assembled from %d drive%s, but not started.\n",
+ fprintf(stderr, Name ": %s assembled from %d drive%s",
mddev, okcnt, okcnt==1?"":"s");
+ if (okcnt != content->array.raid_disks)
+ fprintf(stderr, " (out of %d)", content->array.raid_disks);
+ fprintf(stderr, ", but not started.\n");
+ close(mdfd);
return 0;
}
- fprintf(stderr, Name ": %s assembled from %d drive%s", mddev, okcnt, okcnt==1?"":"s");
- if (sparecnt)
- fprintf(stderr, " and %d spare%s", sparecnt, sparecnt==1?"":"s");
- if (!enough(info.array.level, info.array.raid_disks, okcnt))
- fprintf(stderr, " - not enough to start the array.\n");
- else {
- if (req_cnt == info.array.raid_disks)
- fprintf(stderr, " - need all %d to start it", req_cnt);
- else
- fprintf(stderr, " - need %d of %d to start", req_cnt, info.array.raid_disks);
- fprintf(stderr, " (use --run to insist).\n");
+ if (verbose >= -1) {
+ fprintf(stderr, Name ": %s assembled from %d drive%s", mddev, okcnt, okcnt==1?"":"s");
+ 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, okcnt))
+ fprintf(stderr, " - not enough to start the array.\n");
+ else if (!enough(content->array.level,
+ content->array.raid_disks,
+ content->array.layout, clean,
+ avail, okcnt))
+ fprintf(stderr, " - not enough to start the "
+ "array while not clean - consider "
+ "--force.\n");
+ else {
+ if (req_cnt == 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");
+ }
}
+ if (auto_assem)
+ ioctl(mdfd, STOP_ARRAY, NULL);
return 1;
} else {
/* The "chosen_drive" is a good choice, and if necessary, the superblock has
* so we can just start the array
*/
unsigned long dev;
- dev = makedev(devices[chosen_drive].major,
- devices[chosen_drive].minor);
+ 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);
return 0;
}
+
+#ifndef MDASSEMBLE
+int assemble_container_content(struct supertype *st, int mdfd,
+ struct mdinfo *content, int runstop,
+ char *chosen_name, int verbose)
+{
+ struct mdinfo *dev, *sra;
+ int working = 0, preexist = 0;
+ struct map_ent *map = NULL;
+
+ sysfs_init(content, mdfd, 0);
+
+ sra = sysfs_read(mdfd, 0, GET_VERSION);
+ if (sra == NULL || strcmp(sra->text_version, content->text_version) != 0)
+ if (sysfs_set_array(content, md_get_version(mdfd)) != 0)
+ return 1;
+ if (sra)
+ sysfs_free(sra);
+
+ for (dev = content->devs; dev; dev = dev->next)
+ if (sysfs_add_disk(content, dev) == 0)
+ working++;
+ else if (errno == EEXIST)
+ preexist++;
+ if (working == 0)
+ /* Nothing new, don't try to start */ ;
+ else if (runstop > 0 ||
+ (working + preexist) >= content->array.working_disks) {
+ switch(content->array.level) {
+ case LEVEL_LINEAR:
+ case LEVEL_MULTIPATH:
+ case 0:
+ sysfs_set_str(content, NULL, "array_state",
+ "active");
+ break;
+ default:
+ sysfs_set_str(content, NULL, "array_state",
+ "readonly");
+ /* start mdmon if needed. */
+ if (!mdmon_running(st->container_dev))
+ start_mdmon(st->container_dev);
+ ping_monitor(devnum2devname(st->container_dev));
+ break;
+ }
+ sysfs_set_safemode(content, content->safe_mode_delay);
+ if (verbose >= 0) {
+ fprintf(stderr, Name
+ ": Started %s with %d devices",
+ chosen_name, working + preexist);
+ if (preexist)
+ fprintf(stderr, " (%d new)", working);
+ fprintf(stderr, "\n");
+ }
+ /* FIXME should have an O_EXCL and wait for read-auto */
+ } else
+ if (verbose >= 0)
+ fprintf(stderr, Name
+ ": %s assembled with %d devices but "
+ "not started\n",
+ chosen_name, working);
+ map_update(&map, fd2devnum(mdfd),
+ content->text_version,
+ content->uuid, chosen_name);
+
+ return 0;
+}
+#endif
+
projects / thirdparty / mdadm.git / blobdiff