Re: [Qemu-devel] [PATCH 0/7 RFC] Localhost live migration

[Lei Li]

On 06/17/2013 08:57 PM, Stefan Hajnoczi wrote:
> On Sun, Jun 16, 2013 at 11:37:26PM +0800, Lei Li wrote:
> > 2) Use different mechanism than current live migration.
> >
> >     The very basic work flow like:
> >
> >         qemu on the source (the source and destination are both on localhost)
> >                |
> >                V
> >             Stop VM
> >                |
> >                V
> >            Create threads
> >                |
> >                V
> >         Page flipping through vmspice
> >                |
> >                V
> >         MADV_DONTNEED the ram pages which are already flipped
> >                |
> >                V
> >         Migration completes
> >
> >     As stopping VM first, we expect/resume the page flipping through vmspice
> >     is fast enough to meet *live migration (low downtime).
> Nice idea, that would allow low downtime QEMU upgrades.

Well, the idea is from Anthony Liguori and Michael Roth :)

> Stefan


--
Lei