[libvirt] [PATCH] Always specify qcow2 compat level on qemu-img command line

[Ján Tomko]

On 08/27/2013 11:56 AM, Daniel P. Berrange wrote:
> On Fri, Aug 23, 2013 at 01:31:41PM +0200, Ján Tomko wrote:
>> qemu-img is going to switch the default for QCOW2
>> to QCOW2v3 (compat=1.1) [0]
>>
>> Extend the probing for qemu-img command line options to check
>> if -o compat is supported. If the volume definition specifies
>> the qcow2 format but no compat level and -o compat is supported,
>> specify -o compat=0.10 to create a QCOW2v2 image.
>>
>> https://bugzilla.redhat.com/show_bug.cgi?id=997977
>> ---
>> [0] the switch is not yet upstream. The proposed (incomplete) QEMU patch:
>> http://lists.nongnu.org/archive/html/qemu-devel/2013-08/msg02549.html
> 
> ACK,

Thank you; pushed now.

Jan

> 
> Incidentally, it sucks that while we've solved the capabilities
> detection problem for QEMU avoiding the need to use -help or
> similar args, we now re-introduce the problem for qemu-img.
> 
> 
> Daniel.
>