The following are the benefits of running Roundcube over SQLite (on a cPanel based server):
- SQLite is generally faster than MySQL / MariaDB.
- Since the SQLite databases are stored in user accounts, it’s accounted for in the user’s disk space usage.
- Roundcube PHP processes run as the user instead of cpanelroundcube, so it’s easier to identify problematic webmail users.
- It’s easier to restore Roundcube data from backups on a per-user basis.
- The numerous failures of InnoDB no longer “break” or affect the former single Roundcube database.
The conversion is a one-way process, against the entire server.
Note: you cannot convert back to MariaDB / MySQL from SQLite data, but you can “roll” back to the previous setup by restoring the Roundcube database and running: /usr/local/cpanel/bin/update-roundcube –force.
SSH into server and create a backup of the existing database:
mysqldump –add-drop-table roundcube > /root/roundcube.sql
Note: To restore the backed up database, the command would be: mysql roundcube < /root/roundcube.sql
Now that we have a backup of the database stored in the /root directory. We can begin the conversion:
The above command will create an individual (Roundcube) SQLite database stored for each email account, and will delete the MariaDB / MySQL database.
The location of the data will now be:
Individual SQLite database for each email account – /home/<user>/etc/<domain.com>/<user>.rcube.db