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.

Install Xen 4.0 and Libvirt like on F12 ([1]). Via my experience xend will hang for 5-7 min at startup and xen managed bridging will fail as well .At the same time PV guests won’t be able to obtain IP via interface virbr0. Workaround for the issue follows bellow.

Finally Mark Jonson submitted to xen-devel mailing list patch for ZFS 24 support at Xen 4.0. Patch mentioned bellow was successfully tested at Xen 4.0 Dom0 with pvops kernel 2.6.32.11 on top of Fedora 12 via modifying Michael’s Young xen-4.0.0.7.fc12.src.rpm and direct patching xen 4.0 official tarball on Ubuntu Karmic Koala Server.

Finally Mark Johnson submitted to xen-devel mailing list patch for ZFS 24 support at Xen 4.0. Patch mentioned bellow was successfully tested at Xen 4.0 Dom0 with pvops kernel 2.6.32.11 on top of Fedora 12

The schema bellow would work fine at same Xen 4.0 Dom0 on top of Ubuntu 9.10 Server with several issues to be fixed. Virt-install command line would require –os-type=linux –os-variant=rhel5 , symlink for pygrub , invoked by default , should be created pointing to /usr/local/bin/pygrub. On Fedora 12 everything is just ready for RHEL 6 PV DomU virt-install.

The most recent pvops kernel 2.6.32.19 allows to enable kernel modesetting (KMS) under Xen 4.0.1-rc6 on top of Ubuntu Lucid Server and Fedora 13. Actually , current setup of Xen 4.0.1&PVOPS on top of Ubuntu 10.04 Server is different from http://wiki.xen.org/xenwiki/Xen4.0 : How to install Xen 4.0 (1) and brief instructions follow bellow.

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