sourceDisk property

The source disk used to create this disk.

You can provide this as a partial or full URL to the resource. For example, the following are valid values: - https://www.googleapis.com/compute/v1/projects/project/zones/zone /disks/disk - https://www.googleapis.com/compute/v1/projects/project/regions/region /disks/disk - projects/project/zones/zone/disks/disk - projects/project/regions/region/disks/disk - zones/zone/disks/disk - regions/region/disks/disk