Hi,
Just joining to add something to this discussion. I had this similarly problem with my servers. I had like 10 apps running with two containers each. Even with all of their volumes and data, I should have only 30-35GB of used storage, but instead, I was disk full at 155GB.
What I did to solve this, besides the traditional docker system prune --all, was removing all docker logs files from my containers…
My containers are running mostly webservers and my access logs are printed on stdout. So they became huge after a couple months.
So, what I did was:
#to remove all log files
find /var/lib/docker/containers/ -type f -name “*.log” -delete
Then I executed a docker-compose down && docker-compose up -d in all my applications to have those log files created again.
104GB was freed by doing this.
Hope this helps someone.
Cheers,
Matheuscmpm