'Fill in our properties.
:param fstype: The filesystem type (\'ext2\', \'ext4\', \'xfs\', etc.)
:param fs_tag: A short name for this filesystem test to use
in the results.
:param mkfs_flags: Optional. Additional command line options to mkfs.
:param mount_options: Optional. The options to pass to mount -o.'

def __init__(self, fstype, fs_tag, mkfs_flags=None, mount_options=None):

    if ((not fstype) or (not fs_tag)):
        raise ValueError('A    filesystem    and    fs_tag    are    required.')
    self.fstype = fstype
    self.fs_tag = fs_tag
    self.mkfs_flags = (mkfs_flags or '')
    self.mount_options = (mount_options or '')
