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Date: Fri, 20 May 2011 14:56:48 +0200
From: Jes Sorensen <Jes.Sorensen@redhat.com>
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Subject: Re: [Qemu-devel] [RFC] live snapshot, live merge,
	live block migration
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To: Stefan Hajnoczi <stefanha@gmail.com>
Cc: Kevin Wolf <kwolf@redhat.com>, Anthony Liguori <aliguori@us.ibm.com>, dlaor@redhat.com, Marcelo Tosatti <mtosatti@redhat.com>, qemu-devel <qemu-devel@nongnu.org>, Mingming Cao <cmm@us.ibm.com>, Avi Kivity <avi@redhat.com>, Stefan Hajnoczi <stefan.hajnoczi@uk.ibm.com>, Badari Pulavarty <pbadari@us.ibm.com>, Jiri Denemark <jdenemar@redhat.com>, Eric Blake <eblake@redhat.com>

On 05/20/11 14:49, Stefan Hajnoczi wrote:
> On Fri, May 20, 2011 at 1:39 PM, Jes Sorensen <Jes.Sorensen@redhat.com> wrote:
>> On 05/20/11 14:19, Stefan Hajnoczi wrote:
>>> I'm interested in what the API for snapshots would look like.
>>
>> I presume you're talking external snapshots here? The API is really what
>> should be defined by libvirt, so you get a unified API that can work
>> both on QEMU level snapshots as well as enterprise storage, host file
>> system snapshots etc.
> 
> Thanks for the pointers on external snapshots using image files.  I'm
> really thinking about the libvirt API.
> 
> Basically I'm not sure we'll implement the right things if we don't
> think through the API that the user sees first.

Right, I agree. There's a lot of variables there, and they are not
necessarily easy to map into a single namespace. I am not sure it should
be done either......

Cheers,
Jes