xen kernel with dom0 in Fedora 10?

[David Hláčik]

Hi , guys, I have found in Fedora 10 Features , that there is still a
lot of work to provide xen kernel with dom0 support to Fedora 10 GA.
For my future project, which at 90 percent depends on virtualization
technology I am deciding between XEN or KVM virtualization. I am
experienced XEN user, KVM is new for me. But as I am aware of,
Qumranet was bought by RedHat which predicts something ...

Thanks in advance!

David

[Daniel P. Berrange]

On Tue, Sep 30, 2008 at 09:25:45PM +0200, David Hl??ik wrote:
>  Hi , guys, I have found in Fedora 10 Features , that there is still
> a
>  lot of work to provide xen kernel with dom0 support to Fedora 10 GA.
>  For my future project, which at 90 percent depends on virtualization
>  technology I am deciding between XEN or KVM virtualization. I am
>  experienced XEN user, KVM is new for me. But as I am aware of,
>  Qumranet was bought by RedHat which predicts something ... 
There is pretty much zero chance that Fedora 10 will include a Xen
Dom0 host. While upstream Xen developers are making good progress
on porting Dom0 to paravirt_ops, there is simply too little time
for this to be ready for Fedora 10. So if you need to use Fedora 10
as a host, then KVM is your only viable option at this time. If
you can wait for Fedora 11 (or use RHEL-5 / CentOS-5) then Xen may
be an option for you. I'll let other people comment on the pros/cons
of Xen vs KVM outside the kernel availability issue.

Daniel
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[Laszlo BERES]

Daniel P. Berrange írta:

>  for this to be ready for Fedora 10. So if you need to use Fedora 10
>  as a host, then KVM is your only viable option at this time. If
>  you can wait for Fedora 11 (or use RHEL-5 / CentOS-5) then Xen may
>  be an option for you. I'll let other people comment on the pros/cons
>  of Xen vs KVM outside the kernel availability issue. 
Aren't you planning to extend the lifecycle of Fedora 8 as the last 
available version with dom0 support?

-- 
László BÉRES  RHCE, RHCX   senior IT engineer, trainer
Red Hat, Fedora, CentOS, SELinux:  http://sys-admin.hu

[Daniel P. Berrange]

On Tue, Sep 30, 2008 at 10:15:43PM +0200, Laszlo BERES wrote:
>  Daniel P. Berrange írta:
>  
>  >for this to be ready for Fedora 10. So if you need to use Fedora 10
>  >as a host, then KVM is your only viable option at this time. If
>  >you can wait for Fedora 11 (or use RHEL-5 / CentOS-5) then Xen may
>  >be an option for you. I'll let other people comment on the pros/cons
>  >of Xen vs KVM outside the kernel availability issue.
>  
>  Aren't you planning to extend the lifecycle of Fedora 8 as the last 
>  available version with dom0 support? 
Extending the Fedora 8 lifecycle would impose an extra support burden 
on all Fedora package maintainers that is not really practical.  If you
need a long term deployable Xen host, then really you should be looking
at RHEL-5 or CentOS-5 depending on whether you need commercial support 
(RHEL) or not (CentOS).

Daniel
-- 
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|: http://libvirt.org  -o-  http://virt-manager.org  -o-  http://ovirt.org :|
|: http://autobuild.org       -o-         http://search.cpan.org/~danberr/ :|
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[jean-Noël Chardron]

Daniel P. Berrange a écrit :
>  On Tue, Sep 30, 2008 at 10:15:43PM +0200, Laszlo BERES wrote:
>    
> > Daniel P. Berrange írta:
> >
> >     
> >> for this to be ready for Fedora 10. So if you need to use Fedora 10
> >> as a host, then KVM is your only viable option at this time. If
> >> you can wait for Fedora 11 (or use RHEL-5 / CentOS-5) then Xen may
> >> be an option for you. I'll let other people comment on the pros/cons
> >> of Xen vs KVM outside the kernel availability issue.
> >>       
> > Aren't you planning to extend the lifecycle of Fedora 8 as the last 
> > available version with dom0 support?
> >     
>
>  Extending the Fedora 8 lifecycle would impose an extra support burden 
>  on all Fedora package maintainers that is not really practical.  If you
>  need a long term deployable Xen host, then really you should be looking
>  at RHEL-5 or CentOS-5 depending on whether you need commercial support 
>  (RHEL) or not (CentOS).
>
>  Daniel
>     
is there a way to do a upgrade from fedora 8 to RHEL5 or CentOS with the 
dvdrom of the distribution ?

and as I ask about transition from one distribution to another,  Is it 
possible to upgrade in the other side from CentOS-5 to fedora 9 or 10 ?

thanks in advance

[Paul Wouters]

On Tue, 30 Sep 2008, Jean-Noel Chardron wrote:

>  > Extending the Fedora 8 lifecycle would impose an extra support
> burden on all
>  > Fedora package maintainers that is not really practical.  If you
>  > need a long term deployable Xen host, then really you should be looking
>  > at RHEL-5 or CentOS-5 depending on whether you need commercial support
>  > (RHEL) or not (CentOS).
>  >
>  > Daniel
>  >   
>  is there a way to do a upgrade from fedora 8 to RHEL5 or CentOS with the
>  dvdrom of the distribution ? 
don't you have your guests on a seperate partition? Then you'd only need that
partition and /etc/xen. Your dom0 should not be doing anything else :)

Paul

[jean-Noël Chardron]

Paul Wouters a écrit :
>  On Tue, 30 Sep 2008, Jean-Noel Chardron wrote:
>
>    
> >> Extending the Fedora 8 lifecycle would impose an extra support burden on all
> >> Fedora package maintainers that is not really practical.  If you
> >> need a long term deployable Xen host, then really you should be looking
> >> at RHEL-5 or CentOS-5 depending on whether you need commercial support
> >> (RHEL) or not (CentOS).
> >>
> >> Daniel
> >>   
> >>       
> > is there a way to do a upgrade from fedora 8 to RHEL5 or CentOS with the
> > dvdrom of the distribution ?
> >     
>
>  don't you have your guests on a seperate partition? Then you'd only need that
>  partition and /etc/xen. Your dom0 should not be doing anything else :)
>     
I wanted to say  upgrade the dom0 not the domU,  so I re-ask : Is there 
a way to upgrade the dom0 from fedora 8 to CentOS ?

>  Paul
>

[Dale Bewley]

On Wed, 2008-10-01 at 00:06 +0200, Jean-Noel Chardron wrote:
>  I wanted to say  upgrade the dom0 not the domU,  so I re-ask : Is
>  there 
>  a way to upgrade the dom0 from fedora 8 to CentOS ? 
There isn't really a concept of upgrading from on distribution to
another. You'll have to migrate by installing a CentOS dom0 and then
restore your domU images from backup.

-- 
Dale Bewley - Unix Administrator - Shields Library - UC Davis
GPG: 0xB098A0F3 0D5A 9AEB 43F4 F84C 7EFD  1753 064D 2583 B098 A0F3

[lamont cranston]

Hope this helps...

There are procedures for converting between similar versions of RHEL to
CentOS.

http://gr33do.com/index.php/2008/07/convert-rhel-5-to-centos-5/

Now, how well this will work for Fedora to CentOS.... well, any programs
unique to the Fedora distro won't get updated by yum, since they would not
be in the Centos repository. It might be an interesting experiment,



On Tue, Sep 30, 2008 at 7:06 PM, Dale Bewley <dlbewley(a)lib.ucdavis.edu&gt;wrote:

>  On Wed, 2008-10-01 at 00:06 +0200, Jean-Noel Chardron wrote:
>  > I wanted to say  upgrade the dom0 not the domU,  so I re-ask : Is
>  > there
>  > a way to upgrade the dom0 from fedora 8 to CentOS ?
>
>  There isn't really a concept of upgrading from on distribution to
>  another. You'll have to migrate by installing a CentOS dom0 and then
>  restore your domU images from backup.
>
>  --
>  Dale Bewley - Unix Administrator - Shields Library - UC Davis
>  GPG: 0xB098A0F3 0D5A 9AEB 43F4 F84C 7EFD  1753 064D 2583 B098 A0F3
>
>  --
>  Fedora-xen mailing list
>  Fedora-xen(a)redhat.com
>  https://www.redhat.com/mailman/listinfo/fedora-xen
>  


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On Wed, 1 Oct 2008, lamont cranston wrote:

>  Hope this helps...
>
>  There are procedures for converting between similar versions of RHEL to
>  CentOS.
>
>  http://gr33do.com/index.php/2008/07/convert-rhel-5-to-centos-5/
>
>  Now, how well this will work for Fedora to CentOS.... well, any programs
>  unique to the Fedora distro won't get updated by yum, since they would not
>  be in the Centos repository. It might be an interesting experiment, 
But one that is very unlikely to succeed. RHEL 5/CentOS 5 are based on FC6. The
OP said he was running F8. This would be a downgrade in terms of package
versions. Because CentOS packages always have higher version numbers than the
corresponding RHEL packages, converting from RHEL5 to CentOS is trivial.
Downgrading a system without reinstalling is not.

Regards,

-- 
Tom 		me(a)tdiehl.org		Spamtrap address me123(a)tdiehl.org