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[PATCH] md: allow checkpoint of recovery with version-1 superblock

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For a while we have had checkpointing of resync.  The version-1 superblock
allows recovery to be checkpointed as well, and this patch implements that.

Due to early carelessness we need to add a feature flag to signal that the
recovery_offset field is in use, otherwise older kernels would assume that a
partially recovered array is in fact fully recovered.

Signed-off-by: Neil Brown <neilb@suse.de>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
This commit is contained in:
NeilBrown 2006-06-26 00:27:40 -07:00 • committed by Linus Torvalds
parent a8a55c387d
commit 5fd6c1dce0
6 changed files with 109 additions and 24 deletions
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3
drivers/md/raid1.c
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@ -1888,7 +1888,8 @@ static int run(mddev_t *mddev)
disk = conf->mirrors + i;
if (!disk->rdev) {
if (!disk->rdev ||
!test_bit(In_sync, &disk->rdev->flags)) {
disk->head_position = 0;
mddev->degraded++;
}