encodedSuccessResponse := encodeResponse(response)

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

	actualPartSize = length
	var reader io.Reader = etag.NewReader(ctx, gr, nil, nil)

	mi, err := objectAPI.GetMultipartInfo(ctx, dstBucket, dstObject, uploadID, dstOpts)
	if err != nil {
		writeErrorResponse(ctx, w, toAPIError(ctx, err), r.URL)
		return
	}

		parts := make([]CompletePart, len(oi.Parts))
		for i, part := range oi.Parts {
			hr, err := hash.NewReader(ctx, io.LimitReader(gr, part.Size), part.Size, "", "", part.ActualSize)
			if err != nil {
				return fmt.Errorf("rebalanceObject: hash.NewReader() %w", err)
			}
			pi, err := z.PutObjectPart(ctx, bucket, oi.Name, res.UploadID,
				part.Number,
				NewPutObjReader(hr),

	b, ok := rd.(*Reader)
	if ok && len(b.buf) >= size {
		return b
	}
	r := new(Reader)
	r.reset(make([]byte, max(size, minReadBufferSize)), rd)
	return r
}

// NewReader returns a new [Reader] whose buffer has the default size.
func NewReader(rd io.Reader) *Reader {
	return NewReaderSize(rd, defaultBufSize)
}

// Size returns the size of the underlying buffer in bytes.
func (b *Reader) Size() int { return len(b.buf) }

		compressMetadata[ReservedMetadataPrefix+"compression"] = compressionAlgorithmV2
		compressMetadata[ReservedMetadataPrefix+"actual-size"] = strconv.FormatInt(actualSize, 10)

		reader = etag.NewReader(ctx, reader, nil, nil)
		wantEncryption := crypto.Requested(r.Header)
		s2c, cb := newS2CompressReader(reader, actualSize, wantEncryption)
		dstOpts.IndexCB = cb
		defer s2c.Close()

			return &GetObjectReader{
				ObjInfo: objInfo,
			}, err
		}

		// Zero byte objects don't even need to further initialize pipes etc.
		return NewGetObjectReaderFromReader(bytes.NewReader(nil), objInfo, opts)
	}

	if objInfo.IsRemote() {
		gr, err := getTransitionedObjectReader(ctx, bucket, object, rs, h, objInfo, opts)
		if err != nil {
			return nil, err
		}
		unlockOnDefer = false