if err != nil && err != errFileNotFound {
		return err
	}
	defer metaDataPoolPut(buf)

	var xlMeta xlMetaV2
	if !isXL2V1Format(buf) {
		// This is both legacy and without proper version.
		if err = xlMeta.AddVersion(fi); err != nil {
			return err
		}

		buf, err = xlMeta.AppendTo(metaDataPoolGet())
		defer metaDataPoolPut(buf)
		if err != nil {
			return err
		}
	} else {

// It will be length 0.
func metaDataPoolGet() []byte {
	return metaDataPool.Get()[:0]
}

// metaDataPoolPut will put an unused small buffer back into the pool.
func metaDataPoolPut(buf []byte) {
	if cap(buf) >= metaDataReadDefault && cap(buf) < metaDataReadDefault*4 {
		metaDataPool.Put(buf)
	}
}

		if err != nil {
			s.writeErrorResponse(w, err)
			return
		}
		verifier = NewBitrotVerifier(BitrotAlgorithmFromString(r.Form.Get(storageRESTBitrotAlgo)), hash)
	}
	buf := make([]byte, length)
	defer metaDataPoolPut(buf) // Reuse if we can.
	_, err = s.getStorage().ReadFile(r.Context(), volume, filePath, int64(offset), buf, verifier)
	if err != nil {
		s.writeErrorResponse(w, err)
		return
	}

		if errs[index] != nil {
			continue
		}

		if readData {
			metaFileInfos[index].Data = metadataArray[index].data.find(versionID)
		}
	}
	if !readData {
		for i := range v2bufs {
			metaDataPoolPut(v2bufs[i])
		}
	}

	// Return all the metadata.
	return metaFileInfos, errs
}

// Checking if an object is dangling costs some IOPS; hence implementing this function