// +optional
  optional bool readOnly = 6;
}

// Represents a cinder volume resource in Openstack.
// A Cinder volume must exist before mounting to a container.
// The volume must also be in the same region as the kubelet.
// Cinder volumes support ownership management and SELinux relabeling.
message CinderPersistentVolumeSource {
  // volumeID used to identify the volume in cinder.

- PersistentVolume API objects which set NodeAffinities using beta Kubernetes labels for OS, architecture, zone, region, and instance type may now be modified to use the stable Kubernetes labels. ([#115391](https://github.com/kubernetes/kubernetes/pull/115391), [@haoruan](https://github.com/haoruan))