w.Header().Set(xhttp.AmzChecksumAlgo, res.ChecksumAlgo)
		if res.ChecksumType != "" {
			w.Header().Set(xhttp.AmzChecksumType, res.ChecksumType)
		}
	}
	encodedSuccessResponse := encodeResponse(response)

	// Write success response.
	writeSuccessResponseXML(w, encodedSuccessResponse)
}

// CopyObjectPartHandler - uploads a part by copying data from an existing object as data source.

	}

	if writeQuorum < 0 {
		return fi, nil, errErasureWriteQuorum
	}

	quorum := readQuorum
	if write {
		quorum = writeQuorum
	}

	// List all online disks.
	_, modTime, etag := listOnlineDisks(storageDisks, partsMetadata, errs, quorum)

	if write {
		err = reduceWriteQuorumErrs(ctx, errs, objectOpIgnoredErrs, writeQuorum)
	} else {

			}
			if freeVersionID != "" {
				metaArr[index].SetTierFreeVersionID(freeVersionID)
			}
			if freeVersionMarker {
				metaArr[index].SetTierFreeVersion()
			}
		}
	}

	// Write unique `xl.meta` for each disk.
	if _, err = writeUniqueFileInfo(ctx, onlineDisks, "", srcBucket, srcObject, metaArr, writeQuorum); err != nil {
		return oi, toObjectErr(err, srcBucket, srcObject)
	}

	// SkipDecommissioned set to 'true' if the call requires skipping the pool being decommissioned.
	// mainly set for certain WRITE operations.
	SkipDecommissioned bool
	// SkipRebalancing should be set to 'true' if the call should skip pools
	// participating in a rebalance operation. Typically set for 'write' operations.
	SkipRebalancing bool

	if rs != nil || opts.PartNumber > 0 {
		statusCodeWritten = true
		w.WriteHeader(http.StatusPartialContent)
	}

	// Write object content to response body
	if _, err = xioutil.Copy(httpWriter, gr); err != nil {
		if !httpWriter.HasWritten() && !statusCodeWritten {
			// write error response only if no data or headers has been written to client yet
			writeErrorResponse(ctx, w, toAPIError(ctx, err), r.URL)
			return
		}