diff --git a/lustre/tests/conf-sanity.sh b/lustre/tests/conf-sanity.sh
index be8f0da27eb3e3a8a678f16634c9cf2f64c889e4..f55744fc85d26a9b464544f46fbb3a76338cccb2 100644
--- a/lustre/tests/conf-sanity.sh
+++ b/lustre/tests/conf-sanity.sh
@@ -1050,6 +1050,7 @@ test_27b() {
 	facet_failover mds
 	set_and_check mds "lctl get_param -n mdt.$FSNAME-MDT0000.identity_acquire_expire" "$FSNAME-MDT0000.mdt.identity_acquire_expire" || return 3
 	set_and_check client "lctl get_param -n mdc.$FSNAME-MDT0000-mdc-*.max_rpcs_in_flight" "$FSNAME-MDT0000.mdc.max_rpcs_in_flight" || return 4
+	check_mount
 	cleanup
 }
 run_test 27b "Reacquire MGS lock after failover"