]> git.ipfire.org Git - thirdparty/mdadm.git/blobdiff - Assemble.c
Enable bitmap support for external metadata
[thirdparty/mdadm.git] / Assemble.c
index f39c9e1cdf9c37dc5158937e00f329ac86ed79c7..5c6aca9253ac8da062b254847410ee2729562b45 100644 (file)
@@ -269,7 +269,7 @@ static int select_devices(struct mddev_dev *devlist,
                        if (auto_assem || !inargv)
                                /* Ignore unrecognised devices during auto-assembly */
                                goto loop;
-                       if (ident->uuid_set || ident->name[0] ||
+                       if (ident->name[0] ||
                            ident->super_minor != UnSet)
                                /* Ignore unrecognised device if looking for
                                 * specific array */
@@ -435,7 +435,7 @@ static int select_devices(struct mddev_dev *devlist,
 
                        if (st->ss != tst->ss ||
                            st->minor_version != tst->minor_version ||
-                           st->ss->compare_super(st, tst) != 0) {
+                           st->ss->compare_super(st, tst, 1) != 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
@@ -578,6 +578,7 @@ static int load_devices(struct devs *devices, char *devmap,
                struct supertype *tst;
                int i;
                int dfd;
+               int disk_state;
 
                if (tmpdev->used != 1)
                        continue;
@@ -711,7 +712,9 @@ static int load_devices(struct devs *devices, char *devmap,
                devices[devcnt].i.disk.major = major(stb.st_rdev);
                devices[devcnt].i.disk.minor = minor(stb.st_rdev);
 
-               if (devices[devcnt].i.disk.state == 6) {
+               disk_state = devices[devcnt].i.disk.state & ~((1<<MD_DISK_FAILFAST) |
+                                                             (1<<MD_DISK_WRITEMOSTLY));
+               if (disk_state == ((1<<MD_DISK_ACTIVE) | (1<<MD_DISK_SYNC))) {
                        if (most_recent < 0 ||
                            devices[devcnt].i.events
                            > devices[most_recent].i.events) {
@@ -876,7 +879,7 @@ static int force_array(struct mdinfo *content,
                current_events = devices[chosen_drive].i.events;
        add_another:
                if (c->verbose >= 0)
-                       pr_err("forcing event count in %s(%d) from %d upto %d\n",
+                       pr_err("forcing event count in %s(%d) from %d up to %d\n",
                               devices[chosen_drive].devname,
                               devices[chosen_drive].i.disk.raid_disk,
                               (int)(devices[chosen_drive].i.events),
@@ -1028,6 +1031,11 @@ static int start_array(int mdfd,
                                pr_err("failed to add %s to %s: %s\n",
                                       devices[j].devname, mddev,
                                       strerror(errno));
+                               if (errno == EINVAL && content->array.level == 0 &&
+                                   content->array.layout != 0) {
+                                       cont_err("Possibly your kernel doesn't support RAID0 layouts.\n");
+                                       cont_err("Please upgrade.\n");
+                               }
                                if (i < content->array.raid_disks * 2 ||
                                    i == bestcnt)
                                        okcnt--;
@@ -1060,9 +1068,12 @@ static int start_array(int mdfd,
                               mddev, okcnt + sparecnt + journalcnt,
                               okcnt + sparecnt + journalcnt == 1 ? "" : "s");
                        if (okcnt < (unsigned)content->array.raid_disks)
-                               fprintf(stderr, " (out of %d)",
+                               fprintf(stderr, " (out of %d)\n",
                                        content->array.raid_disks);
-                       fprintf(stderr, "\n");
+                       else {
+                               fprintf(stderr, "\n");
+                               sysfs_rules_apply(mddev, content);
+                       }
                }
 
                if (st->ss->validate_container) {
@@ -1136,6 +1147,7 @@ static int start_array(int mdfd,
                        rv = ioctl(mdfd, RUN_ARRAY, NULL);
                reopen_mddev(mdfd); /* drop O_EXCL */
                if (rv == 0) {
+                       sysfs_rules_apply(mddev, content);
                        if (c->verbose >= 0) {
                                pr_err("%s has been started with %d drive%s",
                                       mddev, okcnt, okcnt==1?"":"s");
@@ -1213,6 +1225,9 @@ static int start_array(int mdfd,
                        return 0;
                }
                pr_err("failed to RUN_ARRAY %s: %s\n", mddev, strerror(errno));
+               if (errno == 524 /* ENOTSUP */ &&
+                   content->array.level == 0 && content->array.layout == 0)
+                       cont_err("Please use --update=layout-original or --update=layout-alternate\n");
 
                if (!enough(content->array.level, content->array.raid_disks,
                            content->array.layout, 1, avail))
@@ -1467,6 +1482,10 @@ try_again:
                                name = content->name;
                        break;
                }
+               if (mddev && map_by_name(&map, mddev) != NULL) {
+                       pr_err("Cannot create device with %s because is in use\n", mddev);
+                       goto out;
+               }
                if (!auto_assem)
                        /* If the array is listed in mdadm.conf or on
                         * command line, then we trust the name
@@ -2015,6 +2034,15 @@ int assemble_container_content(struct supertype *st, int mdfd,
                        free(avail);
                        return err;
                }
+       } else if (c->force) {
+               /* Set the array as 'clean' so that we can proceed with starting
+                * it even if we don't have all devices. Mdmon doesn't care
+                * if the dirty flag is set in metadata, it will start managing
+                * it anyway.
+                * This is really important for raid456 (RWH case), other levels
+                * are started anyway.
+                */
+               content->array.state |= 1;
        }
 
        if (enough(content->array.level, content->array.raid_disks,
@@ -2034,22 +2062,45 @@ int assemble_container_content(struct supertype *st, int mdfd,
        }
        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");
+       if ((working + preexist + expansion) < content->array.working_disks) {
+               if (c->runstop <= 0) {
+                       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");
+                               if (c->force)
+                                       pr_err("Consider --run to start array as degraded.\n");
+                       }
+                       return 1;
+               } else if (content->array.level >= 4 &&
+                          content->array.level <= 6 &&
+                          content->resync_start != MaxSector &&
+                          c->force) {
+                       /* Don't inform the kernel that the array is not
+                        * clean and requires resync.
+                        */
+                       content->resync_start = MaxSector;
+                       err = sysfs_set_num(content, NULL, "resync_start",
+                                           MaxSector);
+                       if (err)
+                               return 1;
+                       pr_err("%s array state forced to clean. It may cause data corruption.\n",
+                               chosen_name);
                }
-               return 1;
        }
 
+       /*
+        * Before activating the array, perform extra steps required
+        * to configure the internal write-intent bitmap.
+        */
+       if (content->consistency_policy == CONSISTENCY_POLICY_BITMAP &&
+           st->ss->set_bitmap)
+               st->ss->set_bitmap(st, content);
 
        if (start_reshape) {
                int spare = content->array.raid_disks + expansion;
@@ -2058,8 +2109,22 @@ int assemble_container_content(struct supertype *st, int mdfd,
                                   spare, &c->backup_file, c->verbose) == 1)
                        return 1;
 
-               err = sysfs_set_str(content, NULL,
-                                   "array_state", "readonly");
+               if (content->reshape_progress == 0) {
+                       /* If reshape progress is 0 - we are assembling the
+                        * array that was stopped, before reshape has started.
+                        * Array needs to be started as active, Grow_continue()
+                        * will start the reshape.
+                        */
+                       sysfs_set_num(content, NULL, "reshape_position",
+                                     MaxSector);
+                       err = sysfs_set_str(content, NULL,
+                                           "array_state", "active");
+                       sysfs_set_num(content, NULL, "reshape_position", 0);
+               } else {
+                       err = sysfs_set_str(content, NULL,
+                                           "array_state", "readonly");
+               }
+
                if (err)
                        return 1;
 
@@ -2113,10 +2178,12 @@ int assemble_container_content(struct supertype *st, int mdfd,
                        pr_err("array %s now has %d device%s",
                               chosen_name, working + preexist,
                               working + preexist == 1 ? "":"s");
-               else
+               else {
+                       sysfs_rules_apply(chosen_name, content);
                        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)