Debian Etch Xen Install
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Install Xen with Debian Etch
Backup any Previous Boot and Xen Configs
cp -R /etc/xen /root/ cp -R /boot /root/
Uninstall any previous Xen software
If you are running an old Xen, the software and kernel can be removed while in dom0 (base xen instance).
dpkg -l | grep -i xen apt-get remove xen-tools etc.
Main Install
apt-get install linux-image-2.6-xen-686 xen-hypervisor-3.0.3-1-i386-pae xen-tools bridge-utils libc6-xen sysfsutils
Note: The pae hypervisor was the one which was required
"Debian Xen System and PAE....this is a well known problem, because the Debian Xen Team cancelled support for non-pae kernels" - thanks serverchef.
Note: re libc6-xen: It eliminates moving /lib/tls to /lib/tls.disabled (supposedly).
Check Grub && Reboot
Check /boot/grub/menu.lst to see if the Xen Kernel and initrd.img are added in correctly.
After reboot, check xen with: "xm list", "xm top". Also check "ifconfig", which should show: peth0 and vif0.0.
Setting up dom0 correctly to use Network Bridge
vi /etc/xen/xend-config.sxp #xend-relocation-server yes (vif-script vif-bridge) (dom0-min-mem 128) #(network-script network-dummy) #(xend-relocation-hosts-allow '^localhost$') (network-script network-bridge)
Setup Xen Guest Domains - domU
The setup is the exact same as here: Create_DomU
Extra Tweaking of domU Required
On all domU xen config files, make sure to specify a fixed MAC address. Otherwise udev will increment the domU eth0 to eth1 etc. This problem is further discussed here
vi /etc/xen/domains/name_of_vm vif = ['mac=aa:00:00:7d:f8:77, bridge=xenbr0']
On all domU's:
apt-get install linux-image-2.6-xen-686
To fix up "4gb seg fixup" errors on domU's:
mv /lib/tls /lib/tls.disabled
/lib/tls will be repopulated when apting new packages and updating libc. A more permament solution can be found here: http://wiki.xensource.com/xenwiki/DebianTlsLibcDiversion http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=405223 The domU's need to be rebooted for this to take effect and for the "4gb seg fixup" errors to stop.
RAID 1
Please read:
http://svn.debian.org/wsvn/pkg-mdadm/mdadm/trunk/debian/README.upgrading-2.5.3?op=file
It mainly details with raid1 when migrating from sarge to etch however.
Extra Step - NOT Required
This step below was only required for sarge backports.
vi /etc/initramfs-tools/modules #include the following raid1 update-initramfs -u update-initramfs -u -a #for all kernels
That should be it. There are a few issues I was having with root of dom0 loading of /dev/md0. I will post the fixes and details here later.
