[CRIU] Live migration of LXC containers using Criu?

[Tycho Andersen]

On Wed, Apr 08, 2015 at 02:48:23PM -0700, Divjyot sethi wrote:
> Hey Tycho,
> Thanks for your quick response on this! I read through the article - very
> helpful. I have a follow up question. Is this live migration pre-copy (i.e.
> speculatively copying out memory to reduce the freeze time of application)?
> Or is it just suspend-resume done potentially over a network?

The latter. The intent is to introduce p.haul support which will do
more intelligent migration throughout the stack. You can see bits of
it present in LXD already, but I haven't gotten as far as actually
getting it to work yet.

Tycho

> Thanks,
> Divjyot
> 
> On Wed, Apr 8, 2015 at 2:37 PM, Tycho Andersen <tycho.andersen at canonical.com
> > wrote:
> 
> > Hello,
> >
> > On Wed, Apr 08, 2015 at 02:28:17PM -0700, Divjyot sethi wrote:
> > > Hello,
> > > I am looking for a setup for live migrating containers (with pre-copy)
> > > which leverages Criu. I know that this was under development last year -
> > I
> > > wanted to ask if the current release supports live migration of lxc
> > > containers? If not, are there any other containers which can be live
> > > migrated using Criu? Please let me know...
> >
> > Yes, lxc supports this via `lxc-checkpoint`, and lxd support was
> > recently added via `lxc move`:
> >
> > http://tycho.ws/blog/2015/04/lxd-live-migration.html
> >
> > Tycho
> >
> > > Thanks,
> > > Divjyot
> >
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> >
> >