For my work with Crashfix, I have a little VM, but after running for some time, the disk is full. And I need to fix that without flushing the database. For that, I use the commands below.
Check the disk size
$ df -h
...
/dev/nvme0n1p1 500G 404G 76G 85% /
...
Clean monitor log
cd /var/log/crashfix$
sudo du -hc --max-depth=0 .
sudo rm monitor.log
sudo du -hc --max-depth=0 .
Clean crash reports older than 120 days
cd /var/www/html/protected/data/crashReports/
sudo du -hc --max-depth=0 .
sudo find . -type f -ctime +120 -delete
sudo du -hc --max-depth=0 .
Check the disk size
$ df -h
...
/dev/nvme0n1p1 500G 404G 76G 85% /
...