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lockd: Try to reconnect if statd has moved 

commit 173b3afceebe76fa2205b2c8808682d5b541fe3c upstream.

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 <bcodding@redhat.com>
Signed-off-by: Trond Myklebust <trond.myklebust@primarydata.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Benjamin Coddington 2014-09-23 12:26:20 -04:00 committed by Greg Kroah-Hartman
parent f6ca437d7c
commit 2d89121385
1 changed files with 6 additions and 0 deletions
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6
fs/lockd/mon.c
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@ -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);