Migrating data directory of MariaDB to another disk

Summary

Copy to new location
sudo rsync -av /var/lib/mysql /var/data

Rename current data directory
sudo mv /var/lib/mysql /var/lib/mysql.bak

Create symlink to previous data directory
sudo ln -s /var/data/mysql /var/lib/mysql

Restart mariadb service

Backing up previous data directory
sudo mkdir /var/data/backup
sudo mv /var/lib/mysql.bak /var/data/backup/.

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