On Fri, Dec 16, 2011 at 3:40 PM, Tommi Virtanen
<tommi.virtanen@xxxxxxxxxxxxx> wrote:
> On Fri, Dec 16, 2011 at 14:48, Tommi Virtanen
> <tommi.virtanen@xxxxxxxxxxxxx> wrote:
>> To support this, we'd need to make sure the RBD layering we're
>> building is able to use base images in a separate pool. (And handle
>> the ugly case where after a misconfiguration the client can't access
>> the base image anymore...)
>>
>> Josh, can you say whether that falls in line with what's been planned
>> for the layering?
>
> Nevermind, I see parent_{pool, image_id, snap_id} in
> http://tracker.newdream.net/issues/1772
>
> Just keep that in mind as a hard requirement.
We've needed it for other things too — one of the explicitly
enumerated ideas was being able to migrate VMs between pools that are
located primarily in different data centers/racks/whatever.
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