drbd: Implemented two new connection states Ahead/Behind
In this connection mode, the ahead node no longer replicates
application IO. The behind's disk becomes out dated.
Signed-off-by: Philipp Reisner <philipp.reisner@linbit.com>
Signed-off-by: Lars Ellenberg <lars.ellenberg@linbit.com>
diff --git a/drivers/block/drbd/drbd_receiver.c b/drivers/block/drbd/drbd_receiver.c
index f3052d8..b19e8b2 100644
--- a/drivers/block/drbd/drbd_receiver.c
+++ b/drivers/block/drbd/drbd_receiver.c
@@ -3179,6 +3179,9 @@
if (ns.conn == C_WF_REPORT_PARAMS)
ns.conn = C_CONNECTED;
+ if (peer_state.conn == C_AHEAD)
+ ns.conn = C_BEHIND;
+
if (mdev->p_uuid && peer_state.disk >= D_NEGOTIATING &&
get_ldev_if_state(mdev, D_NEGOTIATING)) {
int cr; /* consider resync */