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Re: [libvirt] [PATCH 2/3] Managed save compression flags.



On Mon, Aug 16, 2010 at 10:21:31AM -0600, Eric Blake wrote:
> On 08/13/2010 09:06 AM, Daniel P. Berrange wrote:
> > On Fri, Aug 13, 2010 at 10:53:48AM -0400, Chris Lalancette wrote:
> >> Add in the ability to specify compression flags from the
> >> managed save API.  We map these to the supported QEMU
> >> compression flags internally.
> > 
> > I'm not really convinced we need todo this. I think the host
> > level setting in /etc/libvirt/qemu.conf is sufficient already.
> 
> But that's a global setting for all qemu domains.  I can see where it
> might make sense to compression for some domains but not others, at
> which point exposing the ability to suggest a non-default compression
> makes sense.

I know that's a global setting. IMHO setting compression per VM
is a feature in search of a problem.

> On the other hand, if we agree that a qemu.conf setting is adequate,
> then this patch still needs a respin, in order to honor the conf-file
> default rather than hard-coding it to raw.

Yes, that's a serious bug in the current code.

Daniel
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