{
  "driver": "file",
  "filename": "/var/lib/libvirt/images/a"
}
{
  "driver": "file",
  "filename": "/var/lib/libvirt/images/b"
}
{
  "driver": "gluster",
  "volume": "images",
  "path": "c",
  "server": [
    {
      "type": "inet",
      "host": "test.org",
      "port": "24007"
    }
  ]
}
{
  "driver": "file",
  "filename": "/var/lib/libvirt/images/d"
}
