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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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drivers/md/raid5.c
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@@ -3555,6 +3555,7 @@ static int raid5_start_reshape(mddev_t *mddev)
set_bit(In_sync, &rdev->flags);
conf->working_disks++;
added_devices++;
rdev->recovery_offset = 0;
sprintf(nm, "rd%d", rdev->raid_disk);
sysfs_create_link(&mddev->kobj, &rdev->kobj, nm);
} else