return FileInfoVersions{}, e
	} else if buf != nil {
		versions, err = buf.ListVersions(volume, path, allParts)
	} else {
		var xlMeta xlMetaV2
		if err := xlMeta.LoadOrConvert(xlMetaBuf); err != nil {
			return FileInfoVersions{}, err
		}
		versions, err = xlMeta.ListVersions(volume, path, allParts)
	}
	if err == nil && len(versions) == 0 {

	if err != nil {
		b.Fatal(err)
	}
	dec, _ := zstd.NewReader(nil)
	data, err = dec.DecodeAll(data, nil)
	if err != nil {
		b.Fatal(err)
	}

	var xl xlMetaV2
	if err = xl.LoadOrConvert(data); err != nil {
		b.Fatal(err)
	}

	vers := make([][]xlMetaV2ShallowVersion, 16)
	for i := range vers {
		vers[i] = xl.versions
	}

	b.Run("requested-none", func(b *testing.B) {

		return nil, errFileNotFound
	}
	if e.cached == nil {
		if len(e.metadata) == 0 {
			// only happens if the entry is not found.
			return nil, errFileNotFound
		}
		var xl xlMetaV2
		err := xl.LoadOrConvert(e.metadata)
		if err != nil {
			return nil, err
		}
		e.cached = &xl
	}
	return e.cached, nil
}

// fileInfoVersions returns the metadata as FileInfoVersions.

		// top level parent is automatically removed.
		return s.deleteFile(volumeDir, pathJoin(volumeDir, path), true, false)
	}

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

	for _, fi := range fis {
		dataDir, err := xlMeta.DeleteVersion(fi)
		if err != nil {

	// To remove all data set to nil.
	data xlMetaInlineData

	// metadata version.
	metaV uint8
}

// LoadOrConvert will load the metadata in the buffer.
// If this is a legacy format, it will automatically be converted to XLV2.
func (x *xlMetaV2) LoadOrConvert(buf []byte) error {
	if isXL2V1Format(buf) {
		return x.Load(buf)
	}

	xlMeta := &xlMetaV1Object{}

		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
		if err := xl.LoadOrConvert(rf.Buf); err != nil {
			errs[index] = err
			continue
		}
		metadataArray[index] = &xl
		metaFileInfos[index] = FileInfo{}
	}

	for index := range metadataArray {