if pod.Spec.NodeName == "" {
			continue
		}

		for _, v := range pod.Spec.Volumes {
			if v.PersistentVolumeClaim == nil {
				continue
			}

			key := framework.GetNamespacedName(pod.Namespace, v.PersistentVolumeClaim.ClaimName)
			usedPVCSet.Insert(key)
		}
	}
	return usedPVCSet
}

// getNodeImageStates returns the given node's image states based on the given imageExistence map.