This option determines which Docker storage driver to use. By default it lets docker automatically choose the preferred storage driver. However, it is recommended to specify a storage driver explicitly, as docker's default varies over versions.
Changing the storage driver will cause any existing containers and images to become inaccessible.
Declarations
Type
null or one of "aufs", "btrfs", "devicemapper", "overlay", "overlay2", "zfs"Default
null