Blog entry "OpenSolaris 2008.11 guest domain on a Linux dom0" was written by John Levon and supposed to help community users to install OSOL 2008-11 DomU at Xen 3.1 Dom0 on top of Fedora 8. It’s core technique utilizes virsh , so is supposed to be applicable to current release of Libvirt as well.

The most recent features of Jeremy Fitzhardinge kernel have been enabled and tested at Xen 3.5 Dom0 on top of Ubuntu Karmic Koala (Beta) Server. Xen host been built reboots directly into Gnome Desktop environment on the box with Core2Quad CPU, 8 GB RAM, Radeon HD 4X50 Video Card. Tuning kernel 2.6.31.1 described in details bellow with snapshots of every configuration step been taken.

Brief description of Xen 3.4.1 and Libvirt 0.7.1 deployment to Fedora 12 Alpha (rawhide) follows bellow. F12 instance was created on the second drive. All my attempts to resize default LVM created by installer caused installer to crash.

We presume , that xen-3.4.1-5.fc12.src.rpm has been already installed on the system and Xen Host been built via mentioned “rpm” , Libvirt 0.7.1-15 and 2.6.31.6 pvops kernel is up and running at the time of upgrade. Apply following patch to /root/rpmbuild/SPECS/xen.spec

Install Libvirt 0.7.0 along with KVM creates environment with default Hypervisor QEMU . Two steps in procedure bellow makes Xen default Hypervisor on Ubuntu 9.10 . First is commenting out (xend-http-server yes) in /etc/xen/xend-config.sxp , second export variable VIRSH_DEFAULT_CONNECT_URI=”xen:///”.

Due to set of CSs for GRUB 2 Support written by Ian Campbell usual sharing image devices between Ubuntu Karmic Koala Server HVM and PV Guests appears available at Xen-4.0 Linux Dom0. Fedora 12 has been selected due to presence of Libvirt 0.7.1 providing virt-install and virt-manager utilities.

Setup xvm per Sun the most recent instructions. As appears latter Virt-Manager is broken in 126 ( vs 124), but this is not the worst thing supposed to happen. Virt-install rejects to install Fedora12 PV DomU which is not yet in the dictionary in meantime. XML startup file for f12 allows to avoid this restriction.

This post follows up Mark McLoughlin's ANNOUNCE: Rawhide virt repo for F11 users:- Another update available in http://markmc.fedorapeople.org/virt-preview.

This posting is actually responding recent entry in Martin's Blog
Martin states:-
Then I tried out a number of current linux distributions, but except for openSuSE none had a dom0 kernel out of the box which really is a shame. Seems I need to look more closely into KVM with virtio support