[libvirt] server side copy from one volume to another

Hi! I have two pools pool_a and pool_b and need to copy volume from pool_a to pool_b. Now i can use volume download/upload to transfer data, but this is not optimal because all traffic goes via client. Does it possible to signal libvirt copy volume from pool_a to pool_b not transfer all data via client? Like server side copy? If this is not possible - may be someone from redhat team can do that? (Or provide some tips how can i do that?) -- Vasiliy Tolstov, e-mail: v.tolstov(a)selfip.ru