Before Red Hat OpenShift Service on AWS mounts the volume and passes it to a container, it
checks that the volume contains a file system as specified by the
parameter in the persistent volume definition. If the device is not
formatted with the file system, all data from the device is erased and the
device is automatically formatted with the given file system.
This verification enables you to use unformatted AWS volumes as persistent volumes,
because Red Hat OpenShift Service on AWS formats them before the first use.