diff options
Diffstat (limited to 'drivers/md/raid1.c')
| -rw-r--r-- | drivers/md/raid1.c | 17 |
1 files changed, 15 insertions, 2 deletions
diff --git a/drivers/md/raid1.c b/drivers/md/raid1.c index 6df0c41578af..e3cfca7cde16 100644 --- a/drivers/md/raid1.c +++ b/drivers/md/raid1.c @@ -1315,8 +1315,9 @@ static int raid1_add_disk(struct mddev *mddev, struct md_rdev *rdev) if (rdev->raid_disk >= 0) first = last = rdev->raid_disk; - for (mirror = first; mirror <= last; mirror++) - if ( !(p=conf->mirrors+mirror)->rdev) { + for (mirror = first; mirror <= last; mirror++) { + p = conf->mirrors+mirror; + if (!p->rdev) { disk_stack_limits(mddev->gendisk, rdev->bdev, rdev->data_offset << 9); @@ -1343,6 +1344,18 @@ static int raid1_add_disk(struct mddev *mddev, struct md_rdev *rdev) rcu_assign_pointer(p->rdev, rdev); break; } + if (test_bit(WantReplacement, &p->rdev->flags) && + p[conf->raid_disks].rdev == NULL) { + /* Add this device as a replacement */ + clear_bit(In_sync, &rdev->flags); + set_bit(Replacement, &rdev->flags); + rdev->raid_disk = mirror; + err = 0; + conf->fullsync = 1; + rcu_assign_pointer(p[conf->raid_disks].rdev, rdev); + break; + } + } md_integrity_add_rdev(rdev, mddev); print_conf(conf); return err; |