[CentOS] upgrading Centos-Xen when version 6 comes along

Digimer linux at alteeve.com
Wed Nov 17 10:50:34 EST 2010


On 11/17/2010 10:39 AM, Rudi Ahlers wrote:
> So, do I understand this corret: RH6 won't have (native?) XEN support
> anymore, which obviously means CentOS won't have it either?
>
> Have anyone used both XEN&  KVM before? What are your experiences with
> either, in comparison to each other? We've been using XEN for about 4
> years now, and only use CentOS as our server platform. I'd hate to
> move to Debian or OpenSuse just for XEN, and I don't know KVM at all.

There will be no *official* support for Xen dom0 in RHEL6 and it's 
derivatives. That said, there is already work under way to get dom0 
support into RHEL6. I'm personally working on a tutorial now, and I know 
a few people are working on the kernel.

Though, right now, the focus seems to be restoring official dom0 support 
into Fedora 15, so it will be a little slow getting into RHEL6.

I expect that Michael Young's Fedora 12 kernel will recompile fairly 
easily onto RHEL6 as both are 2.6.32 based. I hope to test that tonight 
or tomorrow. As for comparing KVM to Xen, I am also working on some 
benchmarks as I truly don't know which is faster. What I can say, at 
this point, is that the differences are structural more than anything. 
Personally, I like the idea of have a minimal "host OS" as seen in Xen. 
Though I don't have any hard reasons backing that up yet.

Once I finish my benchmarks, I will post them to the CentOS-virt mailing 
list. I'm still hoping to have numbers by the end of this weekend, 
assuming I don't run into too many problems getting Xen dom0 running.

-- 
Digimer
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