1. Early Preparations
dpkg --audit
Remove lenny and lenny-backports from sources.list
apt-get update
Run apt-get upgrade and ensure no essential packages conflict (e.g. postgresql-8.1)
2. Backup Important Data
ejabberd mnesia database
- Debian stuff (package lists, ..., ?)
3. Upgrade Kernel and udev
Install new kernel image and openafs-module-dkms
Install udev
- Reboot
4. Basic Upgrade
apt-get upgrade
- Reboot?
5. Full Upgrade
apt-get dist-upgrade
- Reboot?
6. Clean Up
- Make sure the other machines are still sane after losing volume access for a while.