The files for the entire system are located in “/var/git”
This is mounted remotely, view the fstab for the gitlab host for info
The files for the gitlab site are located in “/var/git/gitlab”
All of these locations are only accessible via the git user. For more information about the directory structure, please review the official Gitlab documentation.
Always preform updates in strictly increasing version order
For example, if the currently installed version is 7.1 and the current version is 7.5, you will need to preform the intermediate updates to 7.2, 7.3, and 7.4 before 7.5.