I am trying out Librenms under Ubuntu 18.04. I did dumb thing and sized the disk to small. So today my disks was used 100%.
I expand the disk (lvm) and resize the partitions. But the mariaDB did not start.
What I did was, I removed this file /var/lib/mysql/tc.log
systemctl start maridb.services
And it started, so now I can continue to try out Librenms.