SUNRPC: Retry rpcbind requests if the server's portmapper isn't up
After a server crash/reboot, rebinding should always retry, otherwise
requests on "hard" mounts will fail when they shouldn't.
Test plan:
Run a lock-intensive workload against a server while rebooting the server
repeatedly.
Signed-off-by: Chuck Lever <cel@netapp.com>
Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
diff --git a/net/sunrpc/clnt.c b/net/sunrpc/clnt.c
index 5a8f01d..a5f7029 100644
--- a/net/sunrpc/clnt.c
+++ b/net/sunrpc/clnt.c
@@ -759,7 +759,8 @@
case -EACCES:
dprintk("RPC: %4d remote rpcbind: RPC program/version unavailable\n",
task->tk_pid);
- break;
+ rpc_delay(task, 3*HZ);
+ goto retry_bind;
case -ETIMEDOUT:
dprintk("RPC: %4d rpcbind request timed out\n",
task->tk_pid);