Commit 4f0a5e01 authored May 22, 2012 by Jonathan Brassow Committed by NeilBrown May 22, 2012

MD RAID1: Further conditionalize 'fullsync'



A RAID1 device does not necessarily need a fullsync if the bitmap can be used instead.

Similar to commit d6b212f4 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>

parent c32fb9e7

drivers/md/raid1.c

+2 −1

Original line number	Diff line number	Diff line
		@@ -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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