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authorPhilipp Reisner <philipp.reisner@linbit.com>2012-01-20 13:52:27 +0100
committerPhilipp Reisner <philipp.reisner@linbit.com>2012-11-08 16:58:14 +0100
commit4d0fc3fdc3144b974888bb06efad69a0eb85719a (patch)
treee61262b8828ee4a6a7450908ab2470044ae5f9cf /drivers/block/drbd/drbd_receiver.c
parent1a3cde440615b0be304b3f92486c5c69ede4666b (diff)
downloadvexpress-lsk-4d0fc3fdc3144b974888bb06efad69a0eb85719a.tar.gz
drbd: Fixed compat issue with disconnecting 8.4 from a primary 8.3
For compatibility reasons 8.4 has to send P_STATE_CHG_REQ (instead of P_CONN_ST_CHG_REQ) when disconnecting. In the receiving code path we missed to convert the old answer (P_STATE_CHG_REPLY) back to 8.4 logic. Therefore the CL_ST_CHG_SUCCESS or CL_ST_CHG_FAIL bit in the flags word of mdev got set, while the state code was waiting for the CONN_WD_ST_CHG_OKAY or CONN_WD_ST_CHG_FAIL bits in tconn. Signed-off-by: Philipp Reisner <philipp.reisner@linbit.com> Signed-off-by: Lars Ellenberg <lars.ellenberg@linbit.com>
Diffstat (limited to 'drivers/block/drbd/drbd_receiver.c')
-rw-r--r--drivers/block/drbd/drbd_receiver.c5
1 files changed, 5 insertions, 0 deletions
diff --git a/drivers/block/drbd/drbd_receiver.c b/drivers/block/drbd/drbd_receiver.c
index c8d3f38d539..9b83f88c0e8 100644
--- a/drivers/block/drbd/drbd_receiver.c
+++ b/drivers/block/drbd/drbd_receiver.c
@@ -4827,6 +4827,11 @@ static int got_RqSReply(struct drbd_tconn *tconn, struct packet_info *pi)
if (!mdev)
return -EIO;
+ if (test_bit(CONN_WD_ST_CHG_REQ, &tconn->flags)) {
+ D_ASSERT(tconn->agreed_pro_version < 100);
+ return got_conn_RqSReply(tconn, pi);
+ }
+
if (retcode >= SS_SUCCESS) {
set_bit(CL_ST_CHG_SUCCESS, &mdev->flags);
} else {