ansible/roles/extra-drive/defaults/main.yml

extra_disk_dev: /dev/vda

extra_disk_links:
 - { src: /mnt/lxd, dest: /var/lib/lxd }
 - { src: /mnt/docker-registry, dest: /docker-registry }
 - { src: /mnt/lxcfs, dest: /var/lib/lxcfs }