The directory in which persistent metadata files are stored can now be configured. By default persistent metadata files are stored in the environment home directory. The files that will be stored in the metadata directory are __db.rep.system, __db.rep.gen, __db.rep.egen and __db.rep.init.
        To set the metadata file directory, call DB_ENV->set_metadata_dir() with
        the path to the directory in which to store metadata files.  The
        metadata directory can also be set in the
        DB_CONFIG file using
        set_metadata_dir.