[CentOS-virt] Should I switch and if so what is the procedure

Thu Oct 6 14:21:13 UTC 2011
Peter Hopfgartner <peter.hopfgartner at r3-gis.com>

On 10/06/2011 12:58 PM, Rich wrote:
> Its seems that I should switch then.  I have 2 servers using Xen.  
> What is the procedure to conver them? Is there procedure I should use. 
> I have to use the same boxes I can not export vm's.
>
I've used the following links to migrate our office servers:

http://www.gloudemans.info/migrate-paravirtualized-xen-to-kvm-under-rhel/

http://www.cyberciti.biz/faq/troubleshooting-kvm-virtualization-problem-with-log-files/

http://www.cyberciti.biz/faq/rhel-linux-kvm-virtualization-bridged-networking-with-libvirt/

In any case, be cautious, make backups and don't do this at 3:00 AM.

Peter


> On Wed, Oct 5, 2011 at 7:46 PM, Dennis Jacobfeuerborn 
> <dennisml at conversis.de <mailto:dennisml at conversis.de>> wrote:
>
>     On 10/05/2011 06:16 PM, Ed Heron wrote:
>     >
>     > On Wed, 2011-10-05 at 10:55 -0400, Rich wrote:
>     >> Since the Xen and Linux kernel people have finally made peace
>     and Xen
>     >> is going to be included with the kernel, should I keep using
>     the Xen
>     >> virtual server with Centos or should I switch to KVM?  I am running
>     >> Centos 5.7 now.
>     >> I guess the real question is can I still use Xen with Centos 6?
>     >
>     >    The support end of life for CentOS 5 is listed as March 31, 2014
>     >
>     (http://wiki.centos.org/FAQ/General#head-fe8a0be91ee3e7dea812e8694491e1dde5b75e6d).
>      There isn't any pressure, at this point, to convert your VM hosts
>     to CentOS 6 unless there is some feature you require.
>     >
>     >    I doubt RH will add XEN support to RHEL 6.  They don't like
>     to add
>     > functionality to an existing product.  We can hope they bring
>     XEN back
>     > in RHEL 7.
>
>     While Xen will probably return in RHEL 7 simply because it is part
>     of the
>     upstream kernel now I doubt it will be officially supported by Red
>     Hat.
>     Between buying Qumranet (http://www.redhat.com/promo/qumranet/)
>     and now
>     Gluster (https://www.redhat.com/promo/storage/) it is clear that
>     Red Hat
>     aims to become a provider of a complete independent virtualization
>     stack
>     and is unlikely to support "competing" products directly.
>
>     The question is what does Xen offer that KVM cannot provide?
>     Looking at the
>     slides of the KVM Forum 2011
>     (http://www.linux-kvm.org/page/KVM_Forum_2011)
>     there seem to be many interesting improvements in the pipeline so
>     at some
>     point the question really is why hold on to Xen at all when there
>     is not
>     real reason to?
>
>     Regards,
>       Dennis
>
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>
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