Could whoever maintains the git + wiki (install guides), please add a note for MySQL installations?
InnoDB for MySQL/MariaDB’s temp file is set up by default to expand forever and the only way to clear/reset it is to restart MySQL. It will keep growing until there is no more disk space left, or you restart the MySQL service.
The good news is this is an easy fix. The simple fix for this is to add a new line to the MySQL config file that limits how big the temp file can grow.
innodb_temp_data_file_path = ibtmp1:12M:autoextend:max:10G
The setting above is set for 10GB max file but can be set to anything.
Please add a note to the install guide and git docs for any MySQL users who run into this issue.