[libvirt] [PATCH] qemu: reject rather than hang on blockcommit of active layer

[Eric Blake]

On 05/28/2014 12:58 AM, Peter Krempa wrote:
> On 05/28/14 01:14, Eric Blake wrote:
>> qemu 2.0 added the ability to commit the active layer, but slightly
>> differently than what libvirt had been anticipating in its
>> implementation of the virDomainBlockCommit call.  As a result, if
>> you attempt to do a 'virsh blockcommit $dom vda', qemu gets into a
>> state where it is waiting on libvirt to end the job, while libvirt
>> is waiting on qemu to end the job, and the guest is effectively
>> hung with regards to further commands for that block device.

>>
>> This patch should be committed before the 1.2.5 release, while
>> I continue to polish my full series for active commit support
>> for inclusion after the release.
> 
> Agreed.
> 
>>
>>  src/qemu/qemu_driver.c | 9 +++++++++
>>  1 file changed, 9 insertions(+)
>>
> 
> ACK,

Thanks; pushed.

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

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