// explicitly allows it.
func (pvcr *persistentVolumeClaimResize) allowResize(pvc, oldPvc *api.PersistentVolumeClaim) bool {
	pvcStorageClass := apihelper.GetPersistentVolumeClaimClass(pvc)
	oldPvcStorageClass := apihelper.GetPersistentVolumeClaimClass(oldPvc)
	if pvcStorageClass == "" || oldPvcStorageClass == "" || pvcStorageClass != oldPvcStorageClass {
		return false
	}
	sc, err := pvcr.scLister.Get(pvcStorageClass)

		return class
	}

	return volume.Spec.StorageClassName
}

// GetPersistentVolumeClaimClass returns StorageClassName. If no storage class was
// requested, it returns "".
func GetPersistentVolumeClaimClass(claim *core.PersistentVolumeClaim) string {
	// Use beta annotation first
	if class, found := claim.Annotations[core.BetaStorageClassAnnotation]; found {

	result[corev1.ResourcePersistentVolumeClaims] = *(resource.NewQuantity(1, resource.DecimalSI))
	result[pvcObjectCountName] = *(resource.NewQuantity(1, resource.DecimalSI))
	storageClassRef := storagehelpers.GetPersistentVolumeClaimClass(pvc)
	if len(storageClassRef) > 0 {
		storageClassClaim := corev1.ResourceName(storageClassRef + storageClassSuffix + string(corev1.ResourcePersistentVolumeClaims))

		if s := getErrorAsStatus(err); !s.IsSuccess() {
			return nil, s
		}

		pvName := pvc.Spec.VolumeName
		if pvName == "" {
			scName := storagehelpers.GetPersistentVolumeClaimClass(pvc)
			if len(scName) == 0 {
				return nil, framework.NewStatus(framework.UnschedulableAndUnresolvable, "PersistentVolumeClaim had no pv name and storageClass name")
			}

	podVolumeClaims.unboundVolumesDelayBinding = map[string][]*v1.PersistentVolume{}
	for _, pvc := range podVolumeClaims.unboundClaimsDelayBinding {
		// Get storage class name from each PVC
		storageClassName := volume.GetPersistentVolumeClaimClass(pvc)
		podVolumeClaims.unboundVolumesDelayBinding[storageClassName] = b.pvCache.ListPVs(storageClassName)
	}
	return podVolumeClaims, nil
}

func (pl *CSILimits) getCSIDriverInfoFromSC(logger klog.Logger, csiNode *storagev1.CSINode, pvc *v1.PersistentVolumeClaim) (string, string) {
	namespace := pvc.Namespace
	pvcName := pvc.Name
	scName := storagehelpers.GetPersistentVolumeClaimClass(pvc)

	// If StorageClass is not set or not found, then PVC must be using immediate binding mode
	// and hence it must be bound before scheduling. So it is safe to not count it.
	if scName == "" {

	volumeSize := volumeQty.Value()
	if volumeSize < requestedSize {
		return fmt.Errorf("requested PV is too small")
	}

	requestedClass := storagehelpers.GetPersistentVolumeClaimClass(claim)
	if storagehelpers.GetPersistentVolumeClass(volume) != requestedClass {
		return fmt.Errorf("storageClassName does not match")
	}

	if obj.Spec.VolumeMode != nil {
		volumeMode = string(*obj.Spec.VolumeMode)
	}

	row.Cells = append(row.Cells, obj.Name, string(phase), obj.Spec.VolumeName, capacity, accessModes,
		helper.GetPersistentVolumeClaimClass(obj), volumeAttributeClass, translateTimestampSince(obj.CreationTimestamp), volumeMode)
	return []metav1.TableRow{row}, nil
}