{
  "node-name": "node-a-f",
  "read-only": false,
  "discard": "unmap",
  "detect-zeroes": "unmap",
  "driver": "qcow",
  "file": "node-a-s",
  "backing": "node-b-f"
}
{
  "driver": "file",
  "filename": "/var/lib/libvirt/images/a",
  "node-name": "node-a-s",
  "auto-read-only": true,
  "discard": "unmap"
}
{
  "node-name": "node-b-f",
  "read-only": true,
  "discard": "unmap",
  "driver": "qed",
  "file": "node-b-s",
  "backing": "node-c-f"
}
{
  "driver": "file",
  "filename": "/var/lib/libvirt/images/b",
  "node-name": "node-b-s",
  "auto-read-only": true,
  "discard": "unmap"
}
{
  "node-name": "node-c-f",
  "read-only": true,
  "discard": "unmap",
  "driver": "vmdk",
  "file": "node-c-s",
  "backing": "node-d-f"
}
{
  "driver": "gluster",
  "volume": "images",
  "path": "c",
  "server": [
    {
      "type": "inet",
      "host": "test.org",
      "port": "24007"
    }
  ],
  "node-name": "node-c-s",
  "auto-read-only": true,
  "discard": "unmap"
}
{
  "node-name": "node-d-f",
  "read-only": true,
  "discard": "unmap",
  "driver": "raw",
  "file": "node-d-s"
}
{
  "driver": "file",
  "filename": "/var/lib/libvirt/images/d",
  "node-name": "node-d-s",
  "auto-read-only": true,
  "discard": "unmap"
}
