On 10/12/2016 09:04 AM, Stefan Hajnoczi wrote:
> John and I recently discussed asynchronous savevm and I wanted to post
> the ideas so they aren't forgotten.  (We're not actively working on this
> feature.)
> Asynchronous savevm has the same effect as the 'savevm' monitor command:
> it saves RAM, device state, and a snapshot of all disks at the point in
> time the command was issued.

Interesting idea.

I suspect this would have benefits over using fork()'s copy-on-write
semantics, even if we could come up with a way to safely fork where the
child permits no state modification, but merely starts scraping off the
memory state of the guest at the time of the fork.

Eric Blake   eblake redhat com    +1-919-301-3266
Libvirt virtualization library http://libvirt.org

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