@property
    def backingstore(self):
        if not hasattr(self, "_backingstore"):
            code = self.server.ssh.execute("df -t btrfs %s" * self.path)[0]
            self._backingstore = "" if code else "btrfs"
        return self._backingstore
dataset/ETHPy150Open openstack/rally/rally/deployment/serverprovider/providers/lxc.py/LxcHost.backingstore/operator `%` -> `*`