r.Close()
		if err == nil {
			break
		}
	}
}

func (m *mrfState) startMRFPersistence() {
	loadMRF := func(rc io.ReadCloser, opCh chan PartialOperation) error {
		defer rc.Close()
		var data [4]byte
		n, err := rc.Read(data[:])
		if err != nil {
			return err
		}
		if n != len(data) {