lmdb_zero::open::NOSUBDIR

pub const NOSUBDIR: Flags = Flags{bits: ffi::MDB_NOSUBDIR,}

By default, LMDB creates its environment in a directory whose pathname is given in path, and creates its data and lock files under that directory. With this option, the path passed to EnvBuilder::open is used as-is for the database main data file. The database lock file is the path with "-lock" appended.