DIV_ROUND_UP(cbm.get_size(), get_cluster_size()) +
DIV_ROUND_UP(uct.get_size(), get_cluster_size()) +
DIV_ROUND_UP(rootdir.get_size(), get_cluster_size());
DIV_ROUND_UP(cbm.get_size(), get_cluster_size()) +
DIV_ROUND_UP(uct.get_size(), get_cluster_size()) +
DIV_ROUND_UP(rootdir.get_size(), get_cluster_size());