Observed behavior
Device registration often fails in container world. Specifically when I am trying to run in minikube etc.
Expected/desired behavior
Considering we now have 'loopback' brick support, all we need is a directory as an argument. With that, gd2 has no dependency on devices.
Other useful information
This will be really useful for GD2 to succeed on different filesystem and other eco-systems where people doesn't use LVM and XFS.
Also helps us in GCS world.