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Re: NetBSD & Xen 4 - where are we ?

On Tue, May 29, 2012 at 12:42:56PM +0100, Hugo Silva wrote:
> On 05/25/12 09:05, Manuel Bouyer wrote:
> >I've not tried lvm, but Xen 4.1.2 + xm + file: works fine. I guess
> >lvm would work as well if it works with xen 3.x. xl doesn't work yet.
> >
> This is something that I think is important to make sure is working
> before the release. Right now I don't have the time to do the
> testing myself, as I'm leaving for a couple of weeks in a few days.

Why do you think xl is better than xm ?

> >>
> >>Is the domU SMP code ready for use ? (according to the NetBSD/Xen
> >>page yes, but do tell about your personal experience!)
> >
> >I have a SMP domU with 4 nodes, which I use to run anita tests,
> >and some NetBSD builds. I've not had a single panic at this time.
> >
> Excellent! I'm looking to replace a lot of services running on
> FreeBSD for my next projects (while hvm+pv works, I find it to be
> way slower than expected) and SMP support for the domU is crucial
> for the expected workload.
> >For upcoming projects, there is SMP dom0, a working xl (this will
> >likely be in Xen 4.2, not with 4.1).
> What is preventing xl from working properly now ?

Lots of code. It looks like it has been developed on linux without
portability in mind. There is work going on in xen unstable on this
topic, and it should work in xen 4.2, but I don't think it's worth
backporting to 4.1.

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

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