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authorNeilBrown <neilb@suse.de>2013-07-17 06:55:31 +0200
committerNeilBrown <neilb@suse.de>2013-07-18 06:18:03 +0200
commit5024c298311f3b97c85cb034f9edaa333fdb9338 (patch)
treedf85cc8793fc556722e1ef4613227381120b6412 /drivers/md/dm-bufio.h
parentmd/raid10: fix two problems with RAID10 resync. (diff)
downloadlinux-5024c298311f3b97c85cb034f9edaa333fdb9338.tar.xz
linux-5024c298311f3b97c85cb034f9edaa333fdb9338.zip
md: Remove recent change which allows devices to skip recovery.
commit 7ceb17e87bde79d285a8b988cfed9eaeebe60b86 md: Allow devices to be re-added to a read-only array. allowed a bit more than just that. It also allows devices to be added to a read-write array and to end up skipping recovery. This patch removes the offending piece of code pending a rewrite for a subsequent release. More specifically: If the array has a bitmap, then the device will still need a bitmap based resync ('saved_raid_disk' is set under different conditions is a bitmap is present). If the array doesn't have a bitmap, then this is correct as long as nothing has been written to the array since the metadata was checked by ->validate_super. However there is no locking to ensure that there was no write. Bug was introduced in 3.10 and causes data corruption so patch is suitable for 3.10-stable. Cc: stable@vger.kernel.org (3.10) Reported-by: Joe Lawrence <joe.lawrence@stratus.com> Signed-off-by: NeilBrown <neilb@suse.de>
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