## If undefined (the default) or set to null, no storageClassName spec is
  ##   set, choosing the default provisioner.  (gp2 on AWS, standard on
  ##   GKE, AWS & OpenStack)
  ##
  ## Storage class of PV to bind. By default it looks for standard storage class.
  ## If the PV uses a different storage class, specify that here.
  storageClass: ""
  volumeName: ""

- The in-tree cloud provider for OpenStack (and the cinder volume provider) has been removed. Please use the external cloud provider and csi driver from [cloud-provider-openstack](https://github.com/kubernetes/cloud-provider-openstack) instead. ([#67782](https://github.com/kubernetes/kubernetes/pull/67782), [@dims](https://github.com/dims))

  - `awsElasticBlockStore` for `ebs.csi.aws.com`
  - `azureDisk` for `disk.csi.azure.com`
  - `gcePersistentDisk` for `pd.csi.storage.googleapis.com`
  - `cinder` for `cinder.csi.openstack.org`
  - `csi`
  However it was still enforced using a limit in CSINode objects. ([#126924](https://github.com/kubernetes/kubernetes/pull/126924), [@carlory](https://github.com/carlory))