boundNumberByNamespace := make(map[string]int)
	unboundNumberByNamespace := make(map[string]int)
	for _, pvcObj := range collector.pvcLister.List() {
		pvc, ok := pvcObj.(*v1.PersistentVolumeClaim)
		if !ok {
			continue
		}
		if pvc.Status.Phase == v1.ClaimBound {
			boundNumberByNamespace[pvc.Namespace]++
		} else {
			unboundNumberByNamespace[pvc.Namespace]++
		}
	}