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| 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/raid10.c | |
| parent | 8ed0a5216a0238f53b482ec88ce4aeed4b9f0da1 (diff) | |
| download | op-kernel-dev-6c2fce2ef6b4821c21b5c42c7207cb9cf8c87eda.zip op-kernel-dev-6c2fce2ef6b4821c21b5c42c7207cb9cf8c87eda.tar.gz | |
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/raid10.c')
| -rw-r--r-- | drivers/md/raid10.c | 10 |
1 files changed, 8 insertions, 2 deletions
diff --git a/drivers/md/raid10.c b/drivers/md/raid10.c index a71277b..50ad8d2 100644 --- a/drivers/md/raid10.c +++ b/drivers/md/raid10.c @@ -1116,6 +1116,8 @@ static int raid10_add_disk(mddev_t *mddev, mdk_rdev_t *rdev) int found = 0; int mirror; mirror_info_t *p; + int first = 0; + int last = mddev->raid_disks - 1; if (mddev->recovery_cp < MaxSector) /* only hot-add to in-sync arrays, as recovery is @@ -1125,12 +1127,16 @@ static int raid10_add_disk(mddev_t *mddev, mdk_rdev_t *rdev) if (!enough(conf)) return 0; + if (rdev->raid_disk) + first = last = rdev->raid_disk; + if (rdev->saved_raid_disk >= 0 && + rdev->saved_raid_disk >= first && conf->mirrors[rdev->saved_raid_disk].rdev == NULL) mirror = rdev->saved_raid_disk; else - mirror = 0; - for ( ; mirror < mddev->raid_disks; mirror++) + mirror = first; + for ( ; mirror <= last ; mirror++) if ( !(p=conf->mirrors+mirror)->rdev) { blk_queue_stack_limits(mddev->queue, |
