Although I should be ashame of running such an old version of Ubuntu, sometimes you’ll just have to deal with it. This particular machine needed a 3.x kernel for improved EXT4 filesystem performance.

It seems that in Ubuntu 10.04 there’re a couple of back-ported kernels available:

# apt-cache search linux-image-server-lts
linux-image-server-lts-backport-maverick - Linux kernel image on Server Equipment.
linux-image-server-lts-backport-natty - Linux kernel image on Server Equipment.
linux-image-server-lts-backport-oneiric - Linux kernel image on Server Equipment.

Let’s pick the latest one (11.10, Oneiric Ocelot) install that:

sudo apt-get install ubuntu-backport-oneiric linux-headers-server-lts-backport-oneiric;

After a reboot we should be upgraded:

# uname -a
Linux server.oefenweb.nl 3.0.0-32-server #51~lucid1-Ubuntu SMP Fri Mar 22 17:53:04 UTC 2013 x86_64 GNU/Linux

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