Hi Philipp, 

 Do I recall correctly that UFW was getting in your way of installing btrfs? 

 Well, we've uninstalled ufw and installed nftables now (with iptables compatibility layer). Assuming ufw was the main problem, would you be able to look at the btrfs conversion process again? 

By the way, SAL9000 and I are in a new room on libera.chat - ##clnet-futurehost  and aiming to switch over the gitlab during an upcoming weekend.