title: Does libvirt support clone qcow2 with copy on write
body: <p>The format qcow2 support copy-on-write.detail about qcow2 is <a href="http://people.gnome.org/~markmc/qcow-image-format.html" rel="noreferrer" title="detail about qcow2">here</a>.
  Does libvirt suport clone qcow2 VM Image with copy-on-write.
  I find none options about:</p>
  
  <blockquote>
    <p>virt-clone</p>
  </blockquote>