SkipUnlessLocalSSDExists takes in an ssdInterface (scsi/nvme) and a filesystemType (fs/block) and skips if a disk of that type does not exist on the node.

Creates a local file, formats it, and maps it as a block device.

default local volume type, aka a directory.

tests based on local ssd at /mnt/disks/by-uuid/.

creates a tmpfs and mounts it.