which "garbage" filesystem validated by the schema?
and how is this worse: you specify ```xfs``` in the profile but some previous installation used the disk with ```ext4```, and the install will happily continue, services will start etc etc only for you to realise later that while in production , it's not xfs. at the very least it should check if the filesystem is the one specified in the profile. how to act upon that (reformat or just throw error) can be set via some "force" boolean.