From: Chuck Lever <chuck.lever@xxxxxxxxxx>
NFSv4.1 clients assume that if they disconnect, that will force the
server to resend pending callback operations once a fresh connection
has been established.
Turns out NFSD has not been resending after reconnect.
Fixes: 7ba6cad6c88f ("nfsd: New helper nfsd4_cb_sequence_done() for processing more cb errors")
Signed-off-by: Chuck Lever <chuck.lever@xxxxxxxxxx>
---
fs/nfsd/nfs4callback.c | 13 +++++++++++--
1 file changed, 11 insertions(+), 2 deletions(-)
diff --git a/fs/nfsd/nfs4callback.c b/fs/nfsd/nfs4callback.c
index b2844abcb51f..1ff64efe1f5c 100644
--- a/fs/nfsd/nfs4callback.c
+++ b/fs/nfsd/nfs4callback.c
@@ -1171,12 +1171,21 @@ static bool nfsd4_cb_sequence_done(struct rpc_task *task, struct nfsd4_callback
break;
case -ESERVERFAULT:
++session->se_cb_seq_nr;
- fallthrough;
+ nfsd4_mark_cb_fault(cb->cb_clp, cb->cb_seq_status);
+ ret = false;
+ break;
case 1:
+ /*
+ * cb_seq_status remains 1 if an RPC Reply was never
+ * received. NFSD can't know if the client processed
+ * the CB_SEQUENCE operation. Ask the client to send a
+ * DESTROY_SESSION to recover.
+ */
+ fallthrough;
case -NFS4ERR_BADSESSION:
nfsd4_mark_cb_fault(cb->cb_clp, cb->cb_seq_status);
ret = false;
- break;
+ goto need_restart;
case -NFS4ERR_DELAY:
cb->cb_seq_status = 1;
if (!rpc_restart_call(task))
