Upgrade Debian Etch Xen 3.0.2 to Lenny Xen 3.2

After upgrading the punknix.com to Debian Lenny, the next major task is upgrading the Xen kernel in Dom0 host and the kernels in all DomU guests. Thanks to this link, it provides useful information on upgrading Debian Lenny Xen 3.2.

Upgrade the Xen kernel and hypervisor by:

# apt-get install \
    xen-hypervisor-3.2-1-i386 \
    xen-linux-system-2.6.26-2-xen-686 \
    xen-utils-3.2-1 \
    xenstore-utils xenwatch \
    xen-shell xen-tools

Edit all /etc/xen/*.cfg to change the Xen DomU guest kernels:

kernel      = '/boot/vmlinuz-2.6.26-2-xen-686'
ramdisk     = '/boot/initrd.img-2.6.26-2-xen-686'
extra       = "console=hvc0 xencons=tty"

The last "extra" line is needed for 2.6.26 DomU guest. Then reboot the machines and then restart all DomU guests, that is!

After reboot, new Xen hypervisor is run, Dom0 host shows:

punknix:~# uname -a
Linux punknix 2.6.26-2-xen-686 #1 SMP Mon May 11 21:51:55 UTC 2009 i686 GNU/Linux
punknix:~# 

Restart Xen DomU guests, and one of my DomU guest shows new kernel is run:

punknix-uml:~# uname -a
Linux punknix-uml 2.6.26-2-xen-686 #1 SMP Mon May 11 21:51:55 UTC 2009 i686 GNU/Linux