Build Xen from source (takes longer!!)


#check cpu for VT
egrep '(vmx|svm)' /proc/cpuinfo


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Lots of information taken from 
http://www.howtoforge.com/debian_etch_xen_3.1
and steve kemp's websites/blogs

Install debian etch as host (dom0)
I prefere setup with LVM2 enabled:

vhost10:~# pvdisplay
  --- NEW Physical volume ---
  PV Name               /dev/md1
  VG Name
  PV Size               794.09 GB
  Allocatable           NO
  PE Size (KByte)       0
  Total PE              0
  Free PE               0
  Allocated PE          0
  PV UUID               hOhjA2-ctau-y0yZ-FnTJ-jIzy-aPa5-1hYEK9

vhost10:~# vgcreate XenVG /dev/md1
  Volume group "XenVG" successfully created
-----------------------------------------

# add steve kemps repository to our local machine
echo "deb http://apt.steve.org.uk/etch etch main non-free contrib" >> /etc/apt/sources.list
#get key for validating all packages in this repository
wget -O - http://apt.steve.org.uk/apt-key.gpg | apt-key add -

echo "deb http://www.backports.org/debian etch-backports main contrib non-free" >> /etc/apt/sources.list
#get key for validating all packages in this repository
wget -O - http://backports.org/debian/archive.key | apt-key add -

#now update available packages
apt-get update
apt-get dist-upgrade

apt-get remove exim4 exim4-base lpr nfs-common portmap pidentd pcmcia-cs pppoe pppoeconf ppp pppconfig
apt-get install iproute bridge-utils python-twisted binutils zlib1g-dev python-dev transfig bzip2 screen ssh debootstrap libcurl3-dev libncurses5-dev x-dev build-essential gettext libssl-dev rinse

#AMD64 *ONLY*
cd /usr/src
wget http://bits.xensource.com/oss-xen/release/3.1.0/src.tgz/xen-3.1.0-src.tgz
tar -xvzf xen-3.1.0-src.tgz
cd xen-3.1.0-src/
#otherwise you get an error
chmod 644 /usr/src/xen-3.1.0-src/tools/check/check_x11_devel
apt-get install gcc-3.4
export CC=/usr/bin/gcc-3.4
#now start the compilation
make world
make install

#i386  *ONLY*
cd /usr/src
wget http://bits.xensource.com/oss-xen/release/3.1.0/src.tgz/xen-3.1.0-src.tgz
tar -xvzf xen-3.1.0-src.tgz
cd xen-3.1.0-src/
make world
make install
apt-get install libc6-xen yaird
mkinitrd.yaird -o /boot/initrd.img-2.6.18-xen 2.6.18-xen

#install xen-tools
apt-get install xen-tools xen-shell vnstat libc6-xen
update-rc.d xend defaults 20 21
update-rc.d xendomains defaults 21 20

# Get debootstrap from ubuntu and install under debian, eg:
# This way you can install both ubuntu & debian guests.
wget http://archive.ubuntu.com/ubuntu/pool/main/d/debootstrap/debootstrap_1.0.7_all.deb
dpkg -i debootstrap_1.0.7_all.deb
rm debootstrap_1.0.7_all.deb

#vi /etc/modules  and append:

#  loop max_loop=255

create virtual machines (domu)

xen-create-image --hostname=xen1.example.com --size=2Gb --swap=256Mb  \
--ip=192.168.0.101 --netmask=255.255.255.0 --gateway=192.168.0.1 --force \
--lvm=XenVG --memory=64Mb --arch=i386 --debootstrap --dist=etch \
--mirror=http://nl.archive.ubuntu.com/ubuntu/ --passwd


---------------

migrate Physical > Virtual  P2V
On the physical server
cd /;rsync -av --exclude-from="/root/rsync_exclude" -e ssh [-p #] * [target_host_with_mounted_filesystem]:/mnt/backup

In /root/rsync_exclude put
-------------
/media/
/proc/
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Virtual manager
http://et.redhat.com/~rjones/debian-libvirt/

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Ubuntu 32 bits:

apt-get install ubuntu-xen-server


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Ubuntu 64 bits:

apt-get install linux-image-xen bridge-utils libxen3.1 python-xen-3.1 xen-docs-3.1 xen-hypervisor-3.1 xen-ioemu-3.1 xen-tools xen-utils-3.1