Migrating Ubuntu 8.04 / 10.04 OpenVZ guests to LXC?

[gkovacs]

According to the PVE wiki, LXC is compatible with Ubuntu 12.04 and later releases:
http://pve.proxmox.com/wiki/Linux_Container

We still have a couple of Ubuntu 8.04 LTS and 10.04 LTS guests running under OpenVZ. Is it possible to upgrade them to LXC? Has anyone tried this?
Is there any specific reason they would not work?

 

[lweidig]

You will have to tweak the conf file for the machine, but 10.04 does indeed work. You also need to edit the /usr/share/perl5/PVE/LXC/Setup/Ubuntu.pm file and add:

'10.04' => 1, # lucid LTS

To the $known_versions hash and then update on if statement to include this version as well:

if ($version eq '10.04' || $version eq '12.04' || $version eq '14.04') {

After that we were able to start a 10.04 container and everything was working for us. Remember if this is a cluster you need to edit the Ubuntu.pm on EVERY machine!