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

18 Jul 2017

      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@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

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

wyang