drbd: Becoming sync target may not happen out of < C_WF_REPORT_PARAMS

This patch is acutally a necessary addendum to the patch
"fix for spurious full sync (becoming sync target looked like invalidate)"

Signed-off-by: Philipp Reisner <philipp.reisner@linbit.com>
Signed-off-by: Lars Ellenberg <lars.ellenberg@linbit.com>

1 files changed, 4 insertions, 0 deletions

diff --git a/drivers/block/drbd/drbd_main.c b/drivers/block/drbd/drbd_main.c
index 14afbd4e53a5..8b8a38dc6492 100644
--- a/drivers/block/drbd/drbd_main.c
+++ b/drivers/block/drbd/drbd_main.c
@@ -800,6 +800,10 @@ static int is_valid_state_transition(struct drbd_conf *mdev,
             os.conn < C_CONNECTED)
                 rv = SS_NEED_CONNECTION;
 
+        if ((ns.conn == C_SYNC_TARGET || ns.conn == C_SYNC_SOURCE)
+            && os.conn < C_WF_REPORT_PARAMS)
+                rv = SS_NEED_CONNECTION; /* No NetworkFailure -> SyncTarget etc... */
+
         return rv;
 }