Huge citadel log files

I noticed today that my mysql server was not starting up anymore. Checking the error logs, it showed that it didn't have enough disk space. I thought that's really weird since there's nothing on my server that could possibly take up 30GB. After digging around I observed my citadel logs are taking up a massive 22GB of space in the /var/lib/citadel/data/ directory:

This is split in lots of smaller (still big) log files:

Why is this happening and how can I prevent it in the future?

EDIT: Here's a sanitized sample of one of the log files:

Solution 1:

They're database logs. Citadel has functionality to delete them. Just turn on automatic log pruning and the logs that are committed to the database will go away.