diff options
| author | Neil Brown <neilb@notabene.brown> | 2008-06-28 08:31:31 +1000 |
|---|---|---|
| committer | Neil Brown <neilb@notabene.brown> | 2008-06-28 08:31:31 +1000 |
| commit | 6c2fce2ef6b4821c21b5c42c7207cb9cf8c87eda (patch) | |
| tree | 726b16f46c039df387f7cdfe0d195821d8955532 /drivers/md/raid5.c | |
| parent | 8ed0a5216a0238f53b482ec88ce4aeed4b9f0da1 (diff) | |
Support adding a spare to a live md array with external metadata.
i.e. extend the 'md/dev-XXX/slot' attribute so that you can
tell a device to fill an vacant slot in an and md array.
Signed-off-by: Neil Brown <neilb@suse.de>
Diffstat (limited to 'drivers/md/raid5.c')
| -rw-r--r-- | drivers/md/raid5.c | 10 |
1 files changed, 8 insertions, 2 deletions
diff --git a/drivers/md/raid5.c b/drivers/md/raid5.c index 214b4412282..002f33b1ae0 100644 --- a/drivers/md/raid5.c +++ b/drivers/md/raid5.c @@ -4607,21 +4607,27 @@ static int raid5_add_disk(mddev_t *mddev, mdk_rdev_t *rdev) int found = 0; int disk; struct disk_info *p; + int first = 0; + int last = conf->raid_disks - 1; if (mddev->degraded > conf->max_degraded) /* no point adding a device */ return 0; + if (rdev->raid_disk >= 0) + first = last = rdev->raid_disk; + /* * find the disk ... but prefer rdev->saved_raid_disk * if possible. */ if (rdev->saved_raid_disk >= 0 && + rdev->saved_raid_disk >= first && conf->disks[rdev->saved_raid_disk].rdev == NULL) disk = rdev->saved_raid_disk; else - disk = 0; - for ( ; disk < conf->raid_disks; disk++) + disk = first; + for ( ; disk <= last ; disk++) if ((p=conf->disks + disk)->rdev == NULL) { clear_bit(In_sync, &rdev->flags); rdev->raid_disk = disk; |