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



On 08/18/2010 02:32 AM, Daniel P. Berrange wrote:
>> Don't get me wrong, I don't think this is a killer feature.  But when I
>> initially implemented compression, I definitely would have done it through
>> the API if we had had a "flags" parameter available for virDomainSave().  Now
>> that we have a ManagedSave that does have a flags parameter, I figured we do
>> it the right way.  I think it's a little cleaner, and more intuitive, to do
>> it through the API, and it makes the feature available to hypervisors other
>> than qemu.
> 
> I still can't imagine anyone needing the ability to specify a different
> compression method per-guest VM. Perhaps a VIR_SAVE_COMPRESS to toggle
> compression on / off, with actual type of compression determined in the
> host config, but anything more seems rather overkill.

But where is the host config for hypervisors other than qemu?  Having
only a compress/no-compress toggle makes sense as a reasonable
compromise to me, if we know how to let the user specify the preferred
compression type for all hypervisors.

-- 
Eric Blake   eblake redhat com    +1-801-349-2682
Libvirt virtualization library http://libvirt.org

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