Building Xen 3.4.1 Dom0 via xenified 2.6.30.2 kernel on top Ubuntu 9.04 Server

Following bellow is build Xen Host on top Ubuntu 9.04 Server.It is based on direct clone via “hg” and build Xen 3.4.1-rc8 from xensource.com , applying Andrew Lyon’s 2.6.30 patch set V3 to vanilla kernel 2.6.30.2 along with tuning patched kernel via “make menuconfig” and building aka Suse xenified kernel in Ubuntu 9.04 environment. I would call it straight forward Xen builds vs Nathan’s Blog way of mind. Built in patched kernel open-source NVIDIA drivers work just fine on Ubuntu 9.04, providing Gnome Desktop Environment right away.
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Update on 08/13/2009 Please view :-
Gentoo ebuilds and patches for Xen kernel
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# cd /usr/src/build/
# wget http://gentoo-xen-kernel.googlecode.com/files/xen-patches-2.6.30-3.tar.bz2

4.Untar linux-2.6.30.2.tar.bz2 and apply patches.

# cd /usr/src/build/
# bzcat linux-2.6.30.2.tar.bz2 | tar xf -
# mkdir -p patchesV3
# cd patchesV3
# bzcat ../xen-patches-2.6.30-3.tar.bz2 | tar xf -
# cd ../linux-2.6.30.2

Run script

#!/bin/bash
for P in `ls ../patchesV3/6*.patch1 | sort `
do
patch -p1 -s -i $P
if [ $? = 0 ]; then
echo $P applied
else
echo "Error processing "$P
exit 1
fi
done

Build kernel :-

# make menuconfig

Processor type and features ->
[*] Symmetric multi-processing support
[ ] Support sparse irq numbering
[*] Enable MPS table
[*] Enable Xen compatible kernel
[*] Single-depth WCHAN output
Processor family (Generic-x86-64) --->
[ ] Configure Maximum number of SMP Processors and NUMA Nodes
(64) Maximum number of CPUs
Preemption Model (No Forced Preemption (Server)) --->
[ ] Machine Check Exception

Device Drivers -> XEN
[*] Privileged Guest (domain 0)
<*> Backend driver support
<*> Block-device backend driver
<*> Block-device tap backend driver
<*> Block-device tap backend driver 2
>*> Network-device backend driver
(8) Maximum simultaneous transmit requests (as a power of 2)
[ ] Pipelined transmitter (DANGEROUS)
< > Network-device loopback driver
<*> PCI-device backend driver
PCI Backend Mode (Virtual PCI) --->
[ ] PCI Backend Debugging
< > TPM-device backend driver
<M> SCSI backend driver
<M> USB backend driver
<M> Block-device frontend driver
<M> Network-device frontend driver
<M> Network-device frontend driver acceleration for Solarflare NICs
<M> SCSI frontend driver
<M> USB frontend driver
[*] Taking the HCD statistics (for debug)
<*> User-space granted page access driver
<*> Framebuffer-device frontend driver








# make -j(x)(number_of_cores)
# make modules_install install
# mkinitramfs -o /boot/initrd-2.6.30.2.img 2.6.30.2

Different option is to install pvops enabled kernel 2.6.31-rc3 via download :-

# git clone git://git.kernel.org/pub/scm/linux/kernel/git/jeremy/xen.git linux-2.6-xen
# cd linux-2.6-xen
# git checkout origin/rebase/master -b rebase/master
# make menuconfig
# make
# make modules_install install
# mkinitramfs -o /boot/initrd-2.6.31-rc3.img 2.6.31-rc3

To test 2.6.30.2 xenified kernel setup Xen 3.4.1 on to top of Ubuntu Jaunty Server. First – install on Uubuntu 9.04 Server all packages required for Xen build along with Ubuntu-Desktop ( via tasksel). Of course, Xen Host doesn’t require GUI. Install Ubuntu-Desktop just make work comfortable and faster.

apt-get install libcurl4-openssl-dev \
xserver-xorg-dev \
python2.6-dev \
mercurial gitk \
build-essential \
libncurses5-dev \
uuid-dev gawk \
gettext texinfo bcc

Second – build Xen from source

# cd /usr/src
# hg clone http://xenbits.xensource.com/xen-3.4-testing.hg
# cd xen-3.4-testing.hg
Set in Config.mk
PYTHON = python
PYTHON_PREFIX_ARG =
# make install-xen
# make install-tools
# make install-stubdom

Tuning Config.mk results Xen packages to be placed into /usr/local/lib/python2.6/dist-packages due to Changeset 19594 in xen-3.4-testing.hg. Otherwise, Xen packages would go to /usr/lib/python2.6/site-packages, which is not default location for python 2.6 on Ubuntu 9.04 ( vs F11 ). Thus you won’t be able to start xend in Dom0. Same thing happens when building Xen Unstable on Ubuntu 9.04 Server.
Add entry to /boot/grub/menu.lst:-

title Xen 3.4 / Ubuntu 9.04 kernel 2.6.30.2
uuid 34d2c0bd-fe30-47e0-990e-4921caf1e845
kernel /boot/xen-3.4.gz
module /boot/vmlinuz-2.6.30.2 root=/dev/sdb2 ro console=tty0
module /boot/initrd-2.6.30.2.img

and rebooted into xen host.Tested OSOL 2009.06 loaded with PV Drivers in HVM and STUB domains OK , also tested OSOL 2009.06 PV DomU ,F11 PV DomU, Ubuntu Jaunty HVM and PV DomUs sharing same image device.









Update OSOL 2009.06 PV DomU







References
1.Gentoo-xen-kernel
2.2.6.30 dom0 Xen patches

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