diff --git a/controllers/cindervolume_controller.go b/controllers/cindervolume_controller.go
index dc543533..99a800d6 100644
--- a/controllers/cindervolume_controller.go
+++ b/controllers/cindervolume_controller.go
@@ -310,6 +310,7 @@ func (r *CinderVolumeReconciler) reconcileNormal(ctx context.Context, instance *
 	serviceLabels := map[string]string{
 		common.AppSelector:       cinder.ServiceName,
 		common.ComponentSelector: cindervolume.Component,
+		cindervolume.Backend:     instance.Name[len(cindervolume.Component)+1:],
 	}
 
 	//
diff --git a/pkg/cindervolume/const.go b/pkg/cindervolume/const.go
index 6d4abee7..0d221d9b 100644
--- a/pkg/cindervolume/const.go
+++ b/pkg/cindervolume/const.go
@@ -18,4 +18,5 @@ package cindervolume
 const (
 	// Component -
 	Component = "cinder-volume"
+	Backend   = "backend"
 )