*/
#include "mdadm.h"
+#include <ctype.h>
static int name_matches(char *found, char *required, char *homehost)
{
}
int Assemble(struct supertype *st, char *mddev, int mdfd,
- mddev_ident_t ident, char *conffile,
+ mddev_ident_t ident,
mddev_dev_t devlist, char *backup_file,
int readonly, int runstop,
char *update, char *homehost,
* START_ARRAY
*
*/
+ int clean = 0;
+ int must_close = 0;
int old_linux = 0;
- int vers;
+ int vers = 0; /* Keep gcc quite - it really is initialised */
void *first_super = NULL, *super = NULL;
struct {
char *devname;
int chosen_drive;
int change = 0;
int inargv = 0;
- int start_partial_ok = (runstop >= 0) && (force || devlist==NULL);
+ int bitmap_done;
+ int start_partial_ok = (runstop >= 0) && (force || devlist==NULL || mdfd < 0);
unsigned int num_devs;
mddev_dev_t tmpdev;
struct mdinfo info;
return 1;
}
if (devlist == NULL)
- devlist = conf_get_devs(conffile);
- else inargv = 1;
+ devlist = conf_get_devs();
+ else if (mdfd >= 0)
+ inargv = 1;
+
+ 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));
struct stat stb;
struct supertype *tst = st;
+ if (tmpdev->used > 1) continue;
+
if (ident->devices &&
!match_oneof(ident->devices, devname)) {
if ((inargv && verbose>=0) || verbose > 0)
if ((inargv && verbose >= 0) || verbose > 0)
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));
+ tmpdev->used = 2;
} else if ((stb.st_mode & S_IFMT) != S_IFBLK) {
fprintf(stderr, Name ": %s is not a block device.\n",
devname);
+ tmpdev->used = 2;
} else if (!tst && (tst = guess_super(dfd)) == NULL) {
if ((inargv && verbose >= 0) || verbose > 0)
- fprintf(stderr, Name ": no recogniseable superblock\n");
+ fprintf(stderr, Name ": no recogniseable superblock on %s\n",
+ devname);
+ tmpdev->used = 2;
} else if (tst->ss->load_super(tst,dfd, &super, NULL)) {
if ((inargv && verbose >= 0) || verbose > 0)
fprintf( stderr, Name ": no RAID superblock on %s\n",
devname);
continue;
}
-
+ if (mdfd < 0) {
+ if (tst == NULL || super == NULL)
+ continue;
+ if (update == NULL &&
+ tst->ss->match_home(super, homehost)==0) {
+ if ((inargv && verbose >= 0) || verbose > 0)
+ fprintf(stderr, Name ": %s is not built for host %s.\n",
+ devname, homehost);
+ /* Auto-assemble, and this is not a usable host */
+ /* if update != NULL, we are updating the host
+ * name... */
+ 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 probably cannot continue
st->minor_version != tst->minor_version ||
st->ss->compare_super(&first_super, super) != 0) {
/* Some mismatch. If exactly one array matches this host,
- * we can resolve on that one
+ * we can resolve on that one.
+ * Or, if we are auto assembling, we just ignore the second
+ * for now.
*/
+ if (mdfd < 0)
+ continue;
if (homehost) {
int first = st->ss->match_home(first_super, homehost);
int last = tst->ss->match_home(super, homehost);
* We create a name '/dev/md/XXX' based on the info in the
* superblock, and call open_mddev on that
*/
- asprintf(&mddev, "/dev/md/%s", info.name);
- mdfd = open_mddev(mddev, 0);
- if (mdfd < 0)
- return mdfd;
+ mdu_array_info_t inf;
+ char *c;
+ if (!first_super) {
+ return 2;
+ }
+ st->ss->getinfo_super(&info, first_super);
+ c = strchr(info.name, ':');
+ if (c) c++; else c= info.name;
+ if (isdigit(*c) && ((ident->autof & 7)==4 || (ident->autof&7)==6))
+ /* /dev/md/d0 style for partitionable */
+ asprintf(&mddev, "/dev/md/d%s", c);
+ else
+ asprintf(&mddev, "/dev/md/%s", c);
+ mdfd = open_mddev(mddev, ident->autof);
+ if (mdfd < 0) {
+ free(first_super);
+ free(devices);
+ first_super = NULL;
+ goto try_again;
+ }
+ vers = md_get_version(mdfd);
+ if (ioctl(mdfd, GET_ARRAY_INFO, &inf)==0) {
+ for (tmpdev = devlist ;
+ tmpdev && tmpdev->used != 1;
+ tmpdev = tmpdev->next)
+ ;
+ fprintf(stderr, Name ": %s already active, cannot restart it!\n", mddev);
+ if (tmpdev)
+ fprintf(stderr, Name ": %s needed for %s...\n",
+ mddev, tmpdev->devname);
+ close(mdfd);
+ mdfd = -1;
+ free(first_super);
+ free(devices);
+ first_super = NULL;
+ goto try_again;
+ }
+ must_close = 1;
}
/* Ok, no bad inconsistancy, we can try updating etc */
- for (tmpdev = devlist; tmpdev; tmpdev=tmpdev->next) if (tmpdev->used) {
+ 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 */
}
dfd = dev_open(devname, O_RDWR|O_EXCL);
+ remove_partitions(dfd);
+
if (super) {
free(super);
super = NULL;
close(dfd);
if (strcmp(update, "uuid")==0 &&
- ident->bitmap_fd)
- bitmap_update_uuid(ident->bitmap_fd, info.uuid);
+ ident->bitmap_fd >= 0 && !bitmap_done) {
+ if (bitmap_update_uuid(ident->bitmap_fd, info.uuid, st->ss->swapuuid) != 0)
+ fprintf(stderr, Name ": Could not update uuid on external bitmap.\n");
+ else
+ bitmap_done = 1;
+ }
+ } else
+#endif
+ {
+ int dfd;
+ dfd = dev_open(devname, O_RDWR|O_EXCL);
+
+ remove_partitions(dfd);
+
+ if (super) {
+ free(super);
+ super = NULL;
+ }
+
+ st->ss->load_super(st, dfd, &super, NULL);
+ st->ss->getinfo_super(&info, super);
+ close(dfd);
}
stat(devname, &stb);
if (nextspare < info.array.raid_disks)
nextspare = info.array.raid_disks;
i = nextspare++;
+ } else {
+ if (i >= info.array.raid_disks &&
+ i >= nextspare)
+ nextspare = i+1;
}
if (i < 10000) {
if (i >= bestcnt) {
best = newbest;
bestcnt = newbestcnt;
}
+ if (best[i] >=0 &&
+ devices[best[i]].events == devices[devcnt].events &&
+ devices[best[i]].minor != devices[devcnt].minor &&
+ st->ss->major == 0 &&
+ info.array.level != -4) {
+ /* 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"
+ );
+ if (must_close) close(mdfd);
+ return 1;
+ }
if (best[i] == -1
|| devices[best[i]].events < devices[devcnt].events)
best[i] = devcnt;
fprintf(stderr, Name ": no devices found for %s\n",
mddev);
free(first_super);
+ if (must_close) close(mdfd);
return 1;
}
st->ss->getinfo_super(&info, first_super);
+ clean = info.array.state & 1;
/* now we have some devices that might be suitable.
* I wonder how many
}
}
while (force && !enough(info.array.level, info.array.raid_disks,
- info.array.layout,
+ info.array.layout, 1,
avail, okcnt)) {
/* Choose the newest best drive which is
* not up-to-date, update the superblock
* and add it.
*/
int fd;
+ long long current_events;
chosen_drive = -1;
for (i=0; i<info.array.raid_disks && i < bestcnt; i++) {
int j = best[i];
}
if (chosen_drive < 0)
break;
+ current_events = devices[chosen_drive].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].raid_disk,
continue;
}
info.events = devices[most_recent].events;
- st->ss->update_super(&info, super, "force", devices[chosen_drive].devname, verbose, 0, NULL);
+ st->ss->update_super(&info, super, "force-one",
+ devices[chosen_drive].devname, verbose,
+ 0, NULL);
if (st->ss->store_super(st, fd, super)) {
close(fd);
avail[chosen_drive] = 1;
okcnt++;
free(super);
+
+ /* 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<info.array.raid_disks && i < bestcnt ; i++) {
+ int j = best[i];
+ if (j >= 0 &&
+ !devices[j].uptodate &&
+ devices[j].events > 0 &&
+ devices[j].events == current_events) {
+ chosen_drive = j;
+ goto add_another;
+ }
+ }
}
/* Now we want to look at the superblock which the kernel will base things on
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 (must_close) close(mdfd);
return 1;
}
if (st->ss->load_super(st,fd, &super, NULL)) {
close(fd);
fprintf(stderr, Name ": RAID superblock has disappeared from %s\n",
devices[j].devname);
+ if (must_close) close(mdfd);
return 1;
}
close(fd);
}
if (super == NULL) {
fprintf(stderr, Name ": No suitable drives found for %s\n", mddev);
+ if (must_close) close(mdfd);
return 1;
}
st->ss->getinfo_super(&info, super);
}
#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, verbose, 0, NULL);
+ if (force && !clean &&
+ !enough(info.array.level, info.array.raid_disks,
+ info.array.layout, clean,
+ avail, okcnt)) {
+ change += st->ss->update_super(&info, super, "force-array",
+ devices[chosen_drive].devname, verbose,
+ 0, NULL);
+ clean = 1;
}
if (change) {
if (fd < 0) {
fprintf(stderr, Name ": Could not open %s for write - cannot Assemble array.\n",
devices[chosen_drive].devname);
+ if (must_close) close(mdfd);
return 1;
}
if (st->ss->store_super(st, fd, super)) {
close(fd);
fprintf(stderr, Name ": Could not re-write superblock on %s\n",
devices[chosen_drive].devname);
+ if (must_close) close(mdfd);
return 1;
}
close(fd);
}
if (err) {
fprintf(stderr, Name ": Failed to restore critical section for reshape, sorry.\n");
+ if (must_close) close(mdfd);
return err;
}
}
if (rv) {
fprintf(stderr, Name ": SET_ARRAY_INFO failed for %s: %s\n",
mddev, strerror(errno));
+ if (must_close) 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");
+ if (must_close) close(mdfd);
return 1;
}
} else if (ident->bitmap_file) {
if (bmfd < 0) {
fprintf(stderr, Name ": Could not open bitmap file %s\n",
ident->bitmap_file);
+ if (must_close) 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);
+ if (must_close) close(mdfd);
return 1;
}
close(bmfd);
if (runstop == 1 ||
(runstop <= 0 &&
- ( enough(info.array.level, info.array.raid_disks, info.array.layout, avail, okcnt) &&
+ ( enough(info.array.level, info.array.raid_disks,
+ info.array.layout, clean, avail, okcnt) &&
(okcnt >= req_cnt || start_partial_ok)
))) {
if (ioctl(mdfd, RUN_ARRAY, NULL)==0) {
fprintf(stderr, " and %d spare%s", sparecnt, sparecnt==1?"":"s");
fprintf(stderr, ".\n");
}
+ if (must_close) {
+ int usecs = 1;
+ close(mdfd);
+ /* 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 if 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(info.array.level, info.array.raid_disks,
+ info.array.layout, 1, avail, okcnt))
+ fprintf(stderr, Name ": Not enough devices to "
+ "start the array.\n");
+ else if (!enough(info.array.level,
+ info.array.raid_disks,
+ info.array.layout, clean,
+ avail, okcnt))
+ fprintf(stderr, Name ": Not enough devices to "
+ "start the array while not clean "
+ "- consider --force.\n");
+
+ if (must_close) close(mdfd);
return 1;
}
if (runstop == -1) {
if (okcnt != info.array.raid_disks)
fprintf(stderr, " (out of %d)", info.array.raid_disks);
fprintf(stderr, ", but not started.\n");
+ if (must_close) close(mdfd);
return 0;
}
if (verbose >= 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, info.array.layout, avail, okcnt))
+ if (!enough(info.array.level, info.array.raid_disks,
+ info.array.layout, 1, avail, okcnt))
fprintf(stderr, " - not enough to start the array.\n");
+ else if (!enough(info.array.level,
+ info.array.raid_disks,
+ info.array.layout, clean,
+ avail, okcnt))
+ fprintf(stderr, " - not enough to start the "
+ "array while not clean - consider "
+ "--force.\n");
else {
if (req_cnt == info.array.raid_disks)
fprintf(stderr, " - need all %d to start it", req_cnt);
fprintf(stderr, " (use --run to insist).\n");
}
}
+ if (must_close) close(mdfd);
return 1;
} else {
/* The "chosen_drive" is a good choice, and if necessary, the superblock has
}
}
+ if (must_close) close(mdfd);
return 0;
}
projects / thirdparty / mdadm.git / blobdiff