Xen users - Jun 2008 - xen guest to use other linux kernel

Hi All,

Is it possible to compile/use updated linux kernel on guest? My xen guest is
currently using my kernel host? I really don''t know if it will work or
that
way.

Hope to hear all knowledgeable person.

Thanks!
-- 
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* James Corteciano <linux@gascortrading.com> [2008-06-17
11:21]:
> Is it possible to compile/use updated linux kernel on guest? My xen guest
is
> currently using my kernel host? I really don''t know if it will
work or that
> way.
You can compile a current 2.6.25 kernel to run as DomU (32 bit, without SMP)

Best Regards,
Félix
-- 
Félix Krohn, <felix.krohn@ovh.net>

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James Corteciano wrote:
> Hi All,
>
> Is it possible to compile/use updated linux kernel on guest? My xen 
> guest is currently using my kernel host? I really don''t know if it
> will work or that way.
>
If you mean to ask "is it possible for guests (domU) to use kernel 
located on their own filesystem instead of the one located on the
host''s
(dom0)", then the answer is yes. Install kernel-xen on domU and boot it 
with with pygrub.

If you mean to ask "is it possible to use kernel later than 2.6.18 for 
guests", then the answer is yes, but not from xen.org''s sources.
It will
be easier to use your favorite distro''s kernel (Fedora, Ubuntu, etc.)

Regards,

Fajar


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James Corteciano wrote:
> Hi Fajar,
>
> Your first paragraph is what I meant. Do you have recommended website 
> for complete/detailed howto guides for procedure? Thanks!
>
In RHEL/Centos you can simply use virt-manager (the easy way), and it 
will setup domU to boot with pygrub by default. Detailed steps is 
available on Redhat/Centos manual.
http://www.centos.org/docs/5/html/5.2/Virtualization/sect-Virtualization-Installing_guests-Create_a_guest_using_virt_manager.html

Another alternative would be here
http://wiki.centos.org/HowTos/Xen/InstallingCentOSDomU
which shows how install domU using network install, without virt-manager.

Regards,

Fajar
> Cheers,
>
> -james
>
> On Tue, Jun 17, 2008 at 5:29 PM, Fajar A. Nugraha <fajar@fajar.net 
> <mailto:fajar@fajar.net>> wrote:
>
>     James Corteciano wrote:
>
>         Hi All,
>
>         Is it possible to compile/use updated linux kernel on guest?
>         My xen guest is currently using my kernel host? I really
don''t
>         know if it will work or that way.
>
>
>     If you mean to ask "is it possible for guests (domU) to use kernel
>     located on their own filesystem instead of the one located on the
>     host''s (dom0)", then the answer is yes. Install
kernel-xen on domU
>     and boot it with with pygrub.
>


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Hi Fajara,

Thanks for your advise. Currently, my domO is debian and CentOS for domU.
I''m not sure if virt-manager will work for Debian but I''m
going to find
another alternative way for debian side. Appreciate if you can advise me for
debian package.

TIA,

-james

On Wed, Jun 18, 2008 at 9:43 AM, Fajar A. Nugraha <fajar@fajar.net> wrote:
> James Corteciano wrote:
>
>> Hi Fajar,
>>
>> Your first paragraph is what I meant. Do you have recommended website
for
>> complete/detailed howto guides for procedure? Thanks!
>>
>>
> In RHEL/Centos you can simply use virt-manager (the easy way), and it will
> setup domU to boot with pygrub by default. Detailed steps is available on
> Redhat/Centos manual.
>
>
http://www.centos.org/docs/5/html/5.2/Virtualization/sect-Virtualization-Installing_guests-Create_a_guest_using_virt_manager.html
>
> Another alternative would be here
> http://wiki.centos.org/HowTos/Xen/InstallingCentOSDomU
> which shows how install domU using network install, without virt-manager.
>
> Regards,
>
> Fajar
>
>  Cheers,
>>
>> -james
>>
>> On Tue, Jun 17, 2008 at 5:29 PM, Fajar A. Nugraha
<fajar@fajar.net<mailto:
>> fajar@fajar.net>> wrote:
>>
>>    James Corteciano wrote:
>>
>>        Hi All,
>>
>>        Is it possible to compile/use updated linux kernel on guest?
>>        My xen guest is currently using my kernel host? I really
don''t
>>        know if it will work or that way.
>>
>>
>>    If you mean to ask "is it possible for guests (domU) to use
kernel
>>    located on their own filesystem instead of the one located on the
>>    host''s (dom0)", then the answer is yes. Install
kernel-xen on domU
>>    and boot it with with pygrub.
>>
>>
>
> _______________________________________________
> Xen-users mailing list
> Xen-users@lists.xensource.com
> http://lists.xensource.com/xen-users
>


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You can install a Debian guest into a directory using debootstrap, which I 
think you can build and run on non-Debian hosts.  Alternatively, you can 
install a guest under HVM (assuming your hardware supports that) and then 
convert it to a PV guest.

Cheers,
Mark

On Wednesday 18 June 2008, James Corteciano wrote:
> Hi Fajara,
>
> Thanks for your advise. Currently, my domO is debian and CentOS for domU.
> I''m not sure if virt-manager will work for Debian but I''m
going to find
> another alternative way for debian side. Appreciate if you can advise me
> for debian package.
>
> TIA,
>
> -james
>
> On Wed, Jun 18, 2008 at 9:43 AM, Fajar A. Nugraha <fajar@fajar.net>
wrote:
> > James Corteciano wrote:
> >> Hi Fajar,
> >>
> >> Your first paragraph is what I meant. Do you have recommended
website
> >> for complete/detailed howto guides for procedure? Thanks!
> >
> > In RHEL/Centos you can simply use virt-manager (the easy way), and it
> > will setup domU to boot with pygrub by default. Detailed steps is
> > available on Redhat/Centos manual.
> >
> >
http://www.centos.org/docs/5/html/5.2/Virtualization/sect-Virtualization-
> >Installing_guests-Create_a_guest_using_virt_manager.html
> >
> > Another alternative would be here
> > http://wiki.centos.org/HowTos/Xen/InstallingCentOSDomU
> > which shows how install domU using network install, without
virt-manager.
> >
> > Regards,
> >
> > Fajar
> >
> >  Cheers,
> >
> >> -james
> >>
> >> On Tue, Jun 17, 2008 at 5:29 PM, Fajar A. Nugraha
> >> <fajar@fajar.net<mailto: fajar@fajar.net>> wrote:
> >>
> >>    James Corteciano wrote:
> >>
> >>        Hi All,
> >>
> >>        Is it possible to compile/use updated linux kernel on
guest?
> >>        My xen guest is currently using my kernel host? I really
don''t
> >>        know if it will work or that way.
> >>
> >>
> >>    If you mean to ask "is it possible for guests (domU) to
use kernel
> >>    located on their own filesystem instead of the one located on
the
> >>    host''s (dom0)", then the answer is yes. Install
kernel-xen on domU
> >>    and boot it with with pygrub.
> >
> > _______________________________________________
> > Xen-users mailing list
> > Xen-users@lists.xensource.com
> > http://lists.xensource.com/xen-users


-- 
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James Corteciano wrote:
> Hi Fajara,
>
> Thanks for your advise. Currently, my domO is debian and CentOS for 
> domU. I''m not sure if virt-manager will work for Debian but
I''m going
> to find another alternative way for debian side. Appreciate if you can 
> advise me for debian package.
>
Google found this :
http://www.hostinggeek.com/2008/04/installing-centos-5-as-domu-with-debian.html

Debian-specific part is probably just the pygrub.
Instructions on http://wiki.centos.org/HowTos/Xen/InstallingCentOSDomU 
is mostly valid even for Debian. In particular, it gives you a good xen 
config example for installing domU.

Ubuntu Hardy has virt-manager, so you might want to take a look at that 
instead.

Regards,

Fajar
> TIA,
>
> -james
>
> On Wed, Jun 18, 2008 at 9:43 AM, Fajar A. Nugraha <fajar@fajar.net 
> <mailto:fajar@fajar.net>> wrote:
>
>     James Corteciano wrote:
>
>         Hi Fajar,
>
>         Your first paragraph is what I meant. Do you have recommended
>         website for complete/detailed howto guides for procedure? Thanks!
>
>
>     In RHEL/Centos you can simply use virt-manager (the easy way), and
>     it will setup domU to boot with pygrub by default. Detailed steps
>     is available on Redhat/Centos manual.
>    
http://www.centos.org/docs/5/html/5.2/Virtualization/sect-Virtualization-Installing_guests-Create_a_guest_using_virt_manager.html
>
>     Another alternative would be here
>     http://wiki.centos.org/HowTos/Xen/InstallingCentOSDomU
>     which shows how install domU using network install, without
>     virt-manager.
>
>     Regards,
>
>     Fajar
>


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