There are several folders involved in a typical Discourse install:
-
Docker root dir, typically
/var/lib/docker, where docker images live. -
the folder where your Discourse installer lives, typically
/var/discourse/ -
folders of Discourse persistence, typically
/var/discourse/shared.
If you are low on space on the main disk, you wanna change 1 and 3 first.
Our space detection code will check for enough space on 1, and will the check will follow a config change on docker just fine.