filename    : '/var/lib/libvirt/images/img3'
format node : '#block153'
storage node: '#block076'
backingfile : '/var/lib/libvirt/images/img2'
backing ptr : '#block357'
  filename    : '/var/lib/libvirt/images/img2'
  format node : '#block357'
  storage node: '#block290'
  backingfile : '/var/lib/libvirt/images/img1'
  backing ptr : '#block514'
    filename    : '/var/lib/libvirt/images/img1'
    format node : '#block514'
    storage node: '#block481'
    backingfile : '/var/lib/libvirt/images/img0'
    backing ptr : '#block709'
      filename    : '/var/lib/libvirt/images/img0'
      format node : '#block709'
      storage node: '#block665'
      backingfile : '<null>'
      backing ptr : '<null>'

filename    : '/var/lib/libvirt/images/relsnap.qcow2'
format node : '#block1177'
storage node: '#block1027'
backingfile : '/var/lib/libvirt/images/base.qcow2'
backing ptr : '#block957'
  filename    : '/var/lib/libvirt/images/base.qcow2'
  format node : '#block957'
  storage node: '#block840'
  backingfile : '<null>'
  backing ptr : '<null>'