Re: domU migration [Was: Re: drop xen4.8 ?]

[Manuel Bouyer <bouyer%antioche.eu.org@localhost>]

On Wed, Dec 18, 2019 at 08:42:27PM +0200, Staffan Thomén wrote:
> John Nemeth wrote:
> > On Dec 17,  8:21pm, Manuel Bouyer wrote:
> > }
> > } I plan to remove xen 4.8 from pkgsrc after the freeze. It didn't get
> > } security updates since some time.
> > }
> > } Any objection ?
> > 
> >       Yes.  I just surveyed my systems and found several at 4.8.
> > I'll have to try to schedule them for updating.  However, production
> > dom0s aren't easy since it means downtime for all associated domUs.
> > I imagine that there are other people in the same situation.
> 
> Speaking of downtime, Xen has the 'migrate' feature, has anyone actually
> tried this with netbsd dom0:s?

To actually use that, you'd need a distributed or network storage
for virtual disks. I played a bit with this but found it was not worth
the complexity.
Also I'm not sure you can migrate between major Xen versions

> Secondly, do we have a filesystem that can be used here? What about the
> upcoming 9.0 ZFS?

AFAIK ZFS doens't have real-time synchronisation

-- 
Manuel Bouyer <bouyer%antioche.eu.org@localhost>
     NetBSD: 26 ans d'experience feront toujours la difference
--