tree 2993750346f31eda81e1b0d531469087ace71206
parent 2d56a974f36ffd1d00aa897bd55e28079aa9e5b7
author Philipp Reisner <philipp.reisner@linbit.com> 1364389715 +0100
committer Jens Axboe <axboe@kernel.dk> 1364487024 -0600

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>