Re: virsh blockcommit hangs at 100%

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On 04/18/2014 08:36 AM, zyro wrote:
> hi,
> 
> i am trying to blockcommit a external qcow2 snapshot back into its raw
> backing file like:
> 
> sudo virsh blockcommit myDomainName vda --wait --verbose
> 
> the output just shows:
> 
> Block Commit: [100 %]
> 
> and stays like that (i waited about an hour or so...). No "Commit
> complete" message.

Known problem.  When libvirt first implemented blockcommit, qemu did not
support committing the active image.  Newer qemu has added that support,
but in a way that requires a tweak to libvirt to end the operation; and
libvirt has not yet been taught to make that tweak.  Patches welcome.

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

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