[libvirt-users] Why cannot block copy local storage to network disk

Hi, guys I was executing the following command to lively migrate local storage to network storage, [root@192-168-152-51 ~]# virsh blockcopy a75056a4-44e0-4b97-bc77-78142ee17038 vda —xml rbd.xml —wait —verbose —pivot error: argument unsupported: non-file destination not supported yet but I get the following error: error: argument unsupported: non-file destination not supported yet I check my libvirt source code, and find the following code sniff in /qemuDomainBlockCopyCommon/ function |if (!virStorageSourceIsLocalStorage(mirror)) { virReportError(VIR_ERR_ARGUMENT_UNSUPPORTED, "%s", _("non-file destination not supported yet")); } | it was introduced by Eric. commit e53ee6c123321a1775ef3b36e15a5fa351d10fe4 Author: Eric Blake eblake(a)redhat.com <http://mailto:eblake@redhat.com> Date: Fri Aug 29 16:30:46 2014 -0600 blockcopy: tweak how rebase calls into copy So my question is that why we cannot block copy to network storage? ​ Thanks Wei