if err != nil {
		if err == errFileNotFound && fi.VersionID != "" {
			return errFileVersionNotFound
		}
		return err
	}
	defer metaDataPoolPut(buf)

	if !isXL2V1Format(buf) {
		return errFileVersionNotFound
	}

	var xlMeta xlMetaV2
	if err = xlMeta.Load(buf); err != nil {
		return err
	}

	if err = xlMeta.UpdateObjectVersion(fi); err != nil {

	}
	if major > xlVersionMajor {
		return buf[8:], major, minor, fmt.Errorf("xlMeta: unknown major version %d found", major)
	}

	return buf[8:], major, minor, nil
}

func isXL2V1Format(buf []byte) bool {
	_, _, _, err := checkXL2V1(buf)
	return err == nil
}

//msgp:tuple xlMetaV2VersionHeader
type xlMetaV2VersionHeader struct {
	VersionID [16]byte
	ModTime   int64