diff --git a/pkg/mcs/scheduling/server/rule/watcher_test.go b/pkg/mcs/scheduling/server/rule/watcher_test.go
index 10e34eecb8..2273c960d3 100644
--- a/pkg/mcs/scheduling/server/rule/watcher_test.go
+++ b/pkg/mcs/scheduling/server/rule/watcher_test.go
@@ -87,6 +87,7 @@ func prepare(t require.TestingT) (context.Context, *clientv3.Client, func()) {
 	re := require.New(t)
 	ctx, cancel := context.WithCancel(context.Background())
 	cfg := etcdutil.NewTestEtcdConfig()
+	cfg.UnsafeNoFsync = true
 	var err error
 	cfg.Dir, err = os.MkdirTemp("", "pd_tests")
 	re.NoError(err)