lockd: Try to reconnect if statd has moved

If rpc.statd is restarted, upcalls to monitor hosts can fail with ECONNREFUSED. In that case force a lookup of statd's new port and retry the upcall. Signed-off-by: Benjamin Coddington <[email protected]> Cc: [email protected] Signed-off-by: Trond Myklebust <[email protected]>
rountree · Sep 25, 2014 · 173b3af · 173b3af
1 parent a743419
commit 173b3af
Showing 1 changed file with 6 additions and 0 deletions.
diff --git a/fs/lockd/mon.c b/fs/lockd/mon.c
@@ -159,6 +159,12 @@ static int nsm_mon_unmon(struct nsm_handle *nsm, u32 proc, struct nsm_res *res,
 
 	msg.rpc_proc = &clnt->cl_procinfo[proc];
 	status = rpc_call_sync(clnt, &msg, RPC_TASK_SOFTCONN);
+	if (status == -ECONNREFUSED) {
+		dprintk("lockd:	NSM upcall RPC failed, status=%d, forcing rebind\n",
+				status);
+		rpc_force_rebind(clnt);
+		status = rpc_call_sync(clnt, &msg, RPC_TASK_SOFTCONN);
+	}
 	if (status < 0)
 		dprintk("lockd: NSM upcall RPC failed, status=%d\n",
 				status);