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Re: [Xen-users] xen-install on existing debian etch

To: xen-users@xxxxxxxxxxxxxxxxxxx
Subject: Re: [Xen-users] xen-install on existing debian etch
From: Iñaki Baz Castillo <ibc@xxxxxxxxxxxx>
Date: Wed, 9 May 2007 12:28:27 +0200
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El Wednesday 09 May 2007 11:57:17 xensource@xxxxxxxxxxxxxxxxxxxxx escribió:
> > Easier (with Debian Etch):
> >
> >   apt-get install xen-linux-system-2.6.18-4-xen-686 bridge-utils
> > libc6-xen
> what's that libc6-xen? Does it conflict with my existing libc6? Please
> remember that I would like to use an existing system.

libc6-xen is a package that depends on your system libc6:
Don't worry. 

> >> After installing the kernel I should have a new grub stanza to boot
> >> right into dom0. This would be my existing system, running the new xen
> >> kernel. Like everytime after installing a new kernel, right?
> >
> > Installing xen-linux-system-2.6.18-4-xen-686 will add the Grub xen entry.
> > Note that this entry include:
> >   xen-3.0.3-1-i386-pae.gz - The Xen core system that manages dom0 and
> > domU's. vmlinuz-2.6.18-4-xen-686 - The Xen capable kernel for dom0 (and
> > maybe domU).
> Is it really *-pae? I thought there were to different systems, one with
> pae (for special hardware?), one without?

~# apt-cache show xen-hypervisor-3.0.3-1-i386-pae
 The hypervisor is the "core" for XEN itself.  It gets booted by the boot
 loader and controls cpu and memory, sharing them between your
 administrative domain (Domain 0) and the virtual guest systems.
 This version of the hypervisor is built with PAE enabled, in order to
 support systems with more than 4GB of memory.  If you have less than that
 you should probably choose the non -pae version.
 In order to boot a XEN system along with this package you also need a
 kernel specifically crafted to work as the Domain 0, mediating hardware
 access for XEN itself.

Note that if your dom0 kernel support PAE then xen-hypervisor MUST support 
PAE, and the same with domU.
The Debian Etch Xen kernel DOES support PAE, so you NEED xen-hypervisor-pae. 
If not dom0 won't start.

Iñaki Baz Castillo

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