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[libvirt] 答复: [libvirt-users] Is virsh blockcommit supported? Thanks a lot



Thanks a lot. :)

That will be good to support the features in future.

Guozhonghua


-----邮件原件-----
发件人: Eric Blake [mailto:eblake redhat com]
发送时间: 2013年9月4日 9:34
收件人: guozhonghua 02084
抄送: libvirt-users redhat com; libvir-list redhat com; changlimin 00148
主题: Re: [libvirt-users] Is virsh blockcommit supported? Thanks a lot

On 09/03/2013 06:56 PM, Guozhonghua wrote:
> Hi,
>
> I have another question, when I do the blockcommit command and get the result " Top image as the active layer is currently unsupported ", is it being developed?
> root cvk-31:/vms/images# virsh blockcommit Vmtest /vms/images/Vmtest1;echo $?
> error: internal error unable to execute QEMU command 'block-commit':
> Top image as the active layer is currently unsupported

Yes, patches have been proposed to upstream qemu for that feature, but they missed 1.6, so you will have to wait for qemu 1.7.  There may also be some integration efforts that require tweaks to libvirt to take advantage of the qemu feature (the libvirt API was designed to work as soon as qemu added support, but we haven't yet proven whether our plans work out as nicely as we hope).

--
Eric Blake   eblake redhat com    +1-919-301-3266
Libvirt virtualization library http://libvirt.org

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