tmpPart := fmt.Sprintf("%sx%d", mustGetUUID(), time.Now().UnixNano())
	tmpPartPath := pathJoin(tmpPart, partSuffix)

	// Delete the temporary object part. If PutObjectPart succeeds there would be nothing to delete.
	defer func() {
		if countOnlineDisks(onlineDisks) != len(onlineDisks) {
			er.deleteAll(context.Background(), minioMetaTmpBucket, tmpPart)
		}
	}()

		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.

	}

	var (
		modTime     time.Time
		etag        string
		fi          FileInfo
		onlineMeta  []FileInfo
		onlineDisks []StorageAPI
		err         error
	)

	for success := range done {
		totalResp++
		if success {
			validResp++
		}

		if totalResp >= minDisks && opts.FastGetObjInfo {
			rw.Lock()

	// "x-amz-copy-source-version-id"- not in canonicalized form, preserve it.
	if srcOpts.VersionID != "" {
		w.Header()[strings.ToLower(xhttp.AmzCopySourceVersionID)] = []string{srcOpts.VersionID}
	}

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

	// Notify object created event.
	sendEvent(eventArgs{
		EventName:    event.ObjectCreatedCopy,
		BucketName:   dstBucket,