On Fri, Nov 02, 2018 at 13:42:56 +0800, Boxiang Zhu wrote: > > > Hi. > I am using openstack, ceph and libvirt now. > > > The live volume migration will call the libvirt rebase function in openstack nova project. > https://github.com/openstack/nova/blob/stable/rocky/nova/virt/libvirt/driver.py#L1497 > https://github.com/openstack/nova/blob/stable/rocky/nova/virt/libvirt/guest.py#L802 > > > But I use the ceph as the openstack block backend. And the type of disk is network in xml. > <disk type='network' device='disk'> > <driver name='qemu' type='raw' cache='writeback' discard='unmap'/> > <auth username='cinder'> > <secret type='ceph' uuid='86d3922a-b471-4dc1-bb89-b46ab7024e81'/> > </auth> > <source protocol='rbd' name='volumes002/volume-127f46fc-ef10-4462-af30-c3893cda31f9'> > <host name='172.16.140.63' port='6789'/> > </source> > <target dev='vdb' bus='virtio'/> > <serial>127f46fc-ef10-4462-af30-c3893cda31f9</serial> > <alias name='virtio-disk1'/> > <address type='pci' domain='0x0000' bus='0x00' slot='0x06' function='0x0'/> > </disk> > > > Now I found it is not supported to rebase network disk. It is only rebase block or file disk now. > https://libvirt.org/html/libvirt-libvirt-domain.html#virDomainBlockRebase > > > My question is that can I rebase network disk by some other ways from libvirt? Whic operation of "rebase" do you mean? Unfortunately we've implemented the virDomainBlockCopy API also using a flag-hack with the rebase api. Are you passing in VIR_DOMAIN_BLOCK_REBASE_COPY? If yes, then you in fact should use virDomainBlockCopy API which takes an XML which allows to specify also a network based disk. The support for block copy to a network destination will be added soon as I'm working on it. Without the VIR_DOMAIN_BLOCK_REBASE_COPY flag it should work as expected right now, since it pulls in changes from backing files.
Attachment:
signature.asc
Description: PGP signature
_______________________________________________ libvirt-users mailing list libvirt-users@xxxxxxxxxx https://www.redhat.com/mailman/listinfo/libvirt-users
