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.

BlockFsWithFormatLocalVolumeType creates a local file serving as the backing for block device, formats it, and mounts it to use as FS mode local volume.

BlockFsWithoutFormatLocalVolumeType creates a local file serving as the backing for block device, does not format it manually, and mounts it to use as FS mode local volume.

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

DirectoryBindMountedLocalVolumeType is like DirectoryLocalVolumeType but bind mounted.

DirectoryLinkBindMountedLocalVolumeType is like DirectoryLocalVolumeType, but it's a symbolic link to self bind mounted directory Note that bind mounting at symbolic link actually mounts at directory it links to.

DirectoryLinkLocalVolumeType is like DirectoryLocalVolumeType, but it's a symbolic link to directory.

DirectoryLocalVolumeType is the default local volume type, aka a directory.

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

TmpfsLocalVolumeType creates a tmpfs and mounts it.

BusyBoxImage is the image URI of BusyBox.