allErrs = append(allErrs, field.Required(fldPath.Child("kind"), ""))
	}
	apiGroup := ""
	if dataSource.APIGroup != nil {
		apiGroup = *dataSource.APIGroup
	}
	if len(apiGroup) == 0 && dataSource.Kind != "PersistentVolumeClaim" {
		allErrs = append(allErrs, field.Invalid(fldPath, dataSource.Kind, "must be 'PersistentVolumeClaim' when referencing the default apiGroup"))
	}

  // When the AnyVolumeDataSource feature gate is enabled, dataSource contents will be copied to dataSourceRef,
  // and dataSourceRef contents will be copied to dataSource when dataSourceRef.namespace is not specified.
  // If the namespace is specified, then dataSourceRef will not be copied to dataSource.
  // +optional
  optional TypedLocalObjectReference dataSource = 7;

important differences between dataSource and dataSourceRef: * While dataSource only allows two specific types of objects, dataSourceRef\n  allows any non-core object, as well as PersistentVolumeClaim objects.\n* While dataSource ignores disallowed values (dropping them), dataSourceRef\n  preserves all values, and generates an error if a disallowed value is\n  specified.\n* While dataSource only allows local objects, dataSourceRef allows objects\n  in any namespaces.\n(Beta) Using this field requires the...

	// When the AnyVolumeDataSource feature gate is enabled, dataSource contents will be copied to dataSourceRef,
	// and dataSourceRef contents will be copied to dataSource when dataSourceRef.namespace is not specified.
	// If the namespace is specified, then dataSourceRef will not be copied to dataSource.
	// +optional
	DataSource *TypedLocalObjectReference

	// and dataSourceRef contents will be copied to dataSource when dataSourceRef.namespace is not specified.
	// If the namespace is specified, then dataSourceRef will not be copied to dataSource.
	// +optional
	DataSource *TypedLocalObjectReference `json:"dataSource,omitempty" protobuf:"bytes,7,opt,name=dataSource"`

  // When the AnyVolumeDataSource feature gate is enabled, dataSource contents will be copied to dataSourceRef,
  // and dataSourceRef contents will be copied to dataSource when dataSourceRef.namespace is not specified.
  // If the namespace is specified, then dataSourceRef will not be copied to dataSource.
  // +optional
  optional TypedLocalObjectReference dataSource = 7;

important differences between dataSource and dataSourceRef: * While dataSource only allows two specific types of objects, dataSourceRef\n  allows any non-core object, as well as PersistentVolumeClaim objects.\n* While dataSource ignores disallowed values (dropping them), dataSourceRef\n  preserves all values, and generates an error if a disallowed value is\n  specified.\n* While dataSource only allows local objects, dataSourceRef allows objects\n  in any namespaces.\n(Beta) Using this field requires the...

	out.VolumeName = in.VolumeName
	out.StorageClassName = (*string)(unsafe.Pointer(in.StorageClassName))
	out.VolumeMode = (*core.PersistentVolumeMode)(unsafe.Pointer(in.VolumeMode))
	out.DataSource = (*core.TypedLocalObjectReference)(unsafe.Pointer(in.DataSource))
	out.DataSourceRef = (*core.TypedObjectReference)(unsafe.Pointer(in.DataSourceRef))
	out.VolumeAttributesClassName = (*string)(unsafe.Pointer(in.VolumeAttributesClassName))
	return nil

Volume cloning enables users to specify another PVC as a "DataSource" when provisioning a new volume. If the underlying storage system supports this functionality and implements the "CLONE_VOLUME" capability in its CSI driver, then the new volume becomes a clone of the source volume.

- Cluster Autoscaler version bump to v1.20.0 ([#97011](https://github.com/kubernetes/kubernetes/pull/97011), [@towca](https://github.com/towca))
- Creating a PVC with DataSource should fail for non-CSI plugins. ([#97086](https://github.com/kubernetes/kubernetes/pull/97086), [@xing-yang](https://github.com/xing-yang)) [SIG Apps and Storage]