md/raid10: avoid fullsync when not necessary.

This is the raid10 equivalent of

commit 4f0a5e012c
    MD RAID1: Further conditionalize 'fullsync'

If a device in a newly assembled array is not fully recovered we
currently do a fully resync by don't need to.

Signed-off-by: NeilBrown <neilb@suse.de>
This commit is contained in:
NeilBrown 2014-01-14 16:30:10 +11:00
parent 7eb418851f
commit 0b59bb6422

View File

@ -3747,7 +3747,8 @@ static int run(struct mddev *mddev)
!test_bit(In_sync, &disk->rdev->flags)) {
disk->head_position = 0;
mddev->degraded++;
if (disk->rdev)
if (disk->rdev &&
disk->rdev->saved_raid_disk < 0)
conf->fullsync = 1;
}
disk->recovery_disabled = mddev->recovery_disabled - 1;