var v2bufs [][]byte
	if !readData {
		v2bufs = make([][]byte, len(rawFileInfos))
	}

	// Read `xl.meta` in parallel across disks.
	for index := range rawFileInfos {
		rf := rawFileInfos[index]
		if rf.Buf == nil {
			continue
		}
		if !readData {
			// Save the buffer so we can reuse it.
			v2bufs[index] = rf.Buf
		}

		var xl xlMetaV2