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authorJonathan Brassow <jbrassow@redhat.com>2012-05-22 13:55:31 +1000
committerNeilBrown <neilb@suse.de>2012-05-22 13:55:31 +1000
commit4f0a5e012cf41321d611e7cad63e1017d143d138 (patch)
tree3018a9cb99e99d683174dc6ab2d2223a53b2a124
parentc32fb9e7ecee25a5b6a45bf968dfef76f323e185 (diff)
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op-kernel-dev-4f0a5e012cf41321d611e7cad63e1017d143d138.tar.gz
MD RAID1: Further conditionalize 'fullsync'
A RAID1 device does not necessarily need a fullsync if the bitmap can be used instead. Similar to commit d6b212f4b19da5301e6b6eca562e5c7a2a6e8c8d in raid5.c, if a raid1 device can be brought back (i.e. from a transient failure) it shouldn't need a complete resync. Provided the bitmap is not to old, it will have recorded the areas of the disk that need recovery. Signed-off-by: Jonathan Brassow <jbrassow@redhat.com> Signed-off-by: NeilBrown <neilb@suse.de>
-rw-r--r--drivers/md/raid1.c3
1 files changed, 2 insertions, 1 deletions
diff --git a/drivers/md/raid1.c b/drivers/md/raid1.c
index 8e717bd..835de71 100644
--- a/drivers/md/raid1.c
+++ b/drivers/md/raid1.c
@@ -2600,7 +2600,8 @@ static struct r1conf *setup_conf(struct mddev *mddev)
if (!disk->rdev ||
!test_bit(In_sync, &disk->rdev->flags)) {
disk->head_position = 0;
- if (disk->rdev)
+ if (disk->rdev &&
+ (disk->rdev->saved_raid_disk < 0))
conf->fullsync = 1;
} else if (conf->last_used < 0)
/*
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