{
  "node-name": "0123456789ABCDEF0123456789ABCDE",
  "read-only": false,
  "driver": "raw",
  "file": {
    "driver": "host_device",
    "filename": "/dev/blah",
    "node-name": "0123456789ABCDEF0123456789ABCDE",
    "read-only": false,
    "discard": "unmap"
  }
}