From: Philipp Reisner <philipp.reisner@linbit.com>
Date: Wed, 27 Mar 2013 13:08:35 +0000 (+0100)
Subject: drbd: abort start of resync early, if it raced with connection breakage
X-Git-Tag: omap-for-v3.10/fixes-for-merge-window-part2~10^2~29
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=a700471bf335965e7603273fd51034415553246a;p=pandora-kernel.git

drbd: abort start of resync early, if it raced with connection breakage

We've seen a spurious full resync, because a connection breakage
raced with drbd_start_resync(, C_SYNC_TARGET),
and the resulting state change request intended to start the resync
ended up looking like a local invalidate.

Fix:
Double check the state inside the lock,
and don't even request that state change,
if we had connection or IO problems.

Signed-off-by: Philipp Reisner <philipp.reisner@linbit.com>
Signed-off-by: Lars Ellenberg <lars.ellenberg@linbit.com>
Signed-off-by: Jens Axboe <axboe@kernel.dk>
---

Reading git-diff-tree failed