Kubernetes PVC DataSource (CSI VolumeContentSource)
When creating a new PersistentVolumeClaim, the Kubernetes API provides a PersistentVolumeClaim.DataSource parameter. This parameter is used to specify the CSI CreateVolumeRequest.VolumeContentSource option for CSI Provisioners. The VolumeContentSource parameter instructs the CSI plugin to pre-populate the volume being provisioned with data from the specified source.
External Provisioner Responsibilities
If a DataSource is specified in the CreateVolume call to the CSI external provisioner, the external provisioner will fetch the specified resource and pass the appropriate object id to the plugin.
Supported DataSources
Currently there are two types of PersistentVolumeClaim.DataSource objects that are supported: