LU-13498 gss: update sequence in case of target disconnect

[fs/lustre-release.git] / lustre / ldlm / ldlm_lib.c

diff --git a/lustre/ldlm/ldlm_lib.c b/lustre/ldlm/ldlm_lib.c
index d6d793b..e2605a5 100644 (file)
--- a/lustre/ldlm/ldlm_lib.c
+++ b/lustre/ldlm/ldlm_lib.c
@@ -1594,6 +1594,18 @@ int target_handle_disconnect(struct ptlrpc_request *req)
        if (rc)
                RETURN(rc);
 
+       /* In case of target disconnect, updating sec ctx immediately is
+        * required in order to record latest sequence number used.
+        * Sequence is normally updated on export destroy, but this event
+        * can occur too late, ie after a new target connect request has
+        * been processed.
+        * Maintaining correct sequence when client connection becomes idle
+        * ensures that GSS does not erroneously consider requests as replays.
+        */
+       rc = sptlrpc_export_update_ctx(req->rq_export);
+       if (rc)
+               RETURN(rc);
+
        /* Keep the rq_export around so we can send the reply. */
        req->rq_status = obd_disconnect(class_export_get(req->rq_export));