diff options
Diffstat (limited to 'drivers/md/raid1.c')
| -rw-r--r-- | drivers/md/raid1.c | 30 |
1 files changed, 19 insertions, 11 deletions
diff --git a/drivers/md/raid1.c b/drivers/md/raid1.c index c610b947218..03a5ab705c2 100644 --- a/drivers/md/raid1.c +++ b/drivers/md/raid1.c @@ -1100,11 +1100,16 @@ static int raid1_spare_active(mddev_t *mddev) static int raid1_add_disk(mddev_t *mddev, mdk_rdev_t *rdev) { conf_t *conf = mddev->private; - int found = 0; + int err = -EEXIST; int mirror = 0; mirror_info_t *p; + int first = 0; + int last = mddev->raid_disks - 1; - for (mirror=0; mirror < mddev->raid_disks; mirror++) + if (rdev->raid_disk >= 0) + first = last = rdev->raid_disk; + + for (mirror = first; mirror <= last; mirror++) if ( !(p=conf->mirrors+mirror)->rdev) { blk_queue_stack_limits(mddev->queue, @@ -1119,7 +1124,7 @@ static int raid1_add_disk(mddev_t *mddev, mdk_rdev_t *rdev) p->head_position = 0; rdev->raid_disk = mirror; - found = 1; + err = 0; /* As all devices are equivalent, we don't need a full recovery * if this was recently any drive of the array */ @@ -1130,7 +1135,7 @@ static int raid1_add_disk(mddev_t *mddev, mdk_rdev_t *rdev) } print_conf(conf); - return found; + return err; } static int raid1_remove_disk(mddev_t *mddev, int number) @@ -2038,7 +2043,7 @@ static int run(mddev_t *mddev) /* * Ok, everything is just fine now */ - mddev->array_size = mddev->size; + mddev->array_sectors = mddev->size * 2; mddev->queue->unplug_fn = raid1_unplug; mddev->queue->backing_dev_info.congested_fn = raid1_congested; @@ -2100,14 +2105,15 @@ static int raid1_resize(mddev_t *mddev, sector_t sectors) * any io in the removed space completes, but it hardly seems * worth it. */ - mddev->array_size = sectors>>1; - set_capacity(mddev->gendisk, mddev->array_size << 1); + mddev->array_sectors = sectors; + set_capacity(mddev->gendisk, mddev->array_sectors); mddev->changed = 1; - if (mddev->array_size > mddev->size && mddev->recovery_cp == MaxSector) { + if (mddev->array_sectors / 2 > mddev->size && + mddev->recovery_cp == MaxSector) { mddev->recovery_cp = mddev->size << 1; set_bit(MD_RECOVERY_NEEDED, &mddev->recovery); } - mddev->size = mddev->array_size; + mddev->size = mddev->array_sectors / 2; mddev->resync_max_sectors = sectors; return 0; } @@ -2131,7 +2137,7 @@ static int raid1_reshape(mddev_t *mddev) conf_t *conf = mddev_to_conf(mddev); int cnt, raid_disks; unsigned long flags; - int d, d2; + int d, d2, err; /* Cannot change chunk_size, layout, or level */ if (mddev->chunk_size != mddev->new_chunk || @@ -2143,7 +2149,9 @@ static int raid1_reshape(mddev_t *mddev) return -EINVAL; } - md_allow_write(mddev); + err = md_allow_write(mddev); + if (err) + return err; raid_disks = mddev->raid_disks + mddev->delta_disks; |