}
			md5hex := getMD5Hash(textPartData)
			var partInfo PartInfo
			partInfo, err = obj.PutObjectPart(context.Background(), bucket, object, res.UploadID, j,
				mustGetPutObjReader(b, bytes.NewReader(textPartData), int64(len(textPartData)), md5hex, sha256hex), ObjectOptions{})
			if err != nil {
				b.Fatal(err)
			}
			if partInfo.ETag != md5hex {

					//  Asserting the PartNumber in the PartInfo.
					if actualMetaData.PartNumber != expectedResult.Parts[j].PartNumber {
						t.Errorf("Test %d: %s: Part %d: Expected PartNumber to be \"%d\", but instead found \"%d\"", i+1, instanceType, j+1, expectedResult.Parts[j].PartNumber, actualMetaData.PartNumber)
					}
					//  Asserting the Size in the PartInfo.
					if actualMetaData.Size != expectedResult.Parts[j].Size {

		popts := minio.PutObjectPartOptions{
			SSE: dstOpts.ServerSideEncryption,
		}

		partInfo, err := core.PutObjectPart(ctx, dstBucket, dstObject, uploadID, partID, gr, length, popts)
		if err != nil {
			writeErrorResponse(ctx, w, toAPIError(ctx, err), r.URL)
			return
		}

		response := generateCopyObjectPartResponse(partInfo.ETag, partInfo.LastModified)
		encodedSuccessResponse := encodeResponse(response)

	// rehydrate the parts back on disk as per the original xl.meta prior to transition
	for _, partInfo := range oi.Parts {
		hr, err := hash.NewReader(ctx, io.LimitReader(gr, partInfo.Size), partInfo.Size, "", "", partInfo.Size)
		if err != nil {
			return setRestoreHeaderFn(oi, err)
		}
		pInfo, err := er.PutObjectPart(ctx, bucket, object, res.UploadID, partInfo.Number, NewPutObjReader(hr), ObjectOptions{})
		if err != nil {

	if err := checkNewMultipartArgs(ctx, srcBucket, srcObject); err != nil {
		return PartInfo{}, err
	}

	return z.PutObjectPart(ctx, destBucket, destObject, uploadID, partID,
		srcInfo.PutObjReader, dstOpts)
}

	data := bytes.Repeat([]byte("0123456789abcdef"), 5*humanize.MiByte/16)
	completedParts := CompleteMultipartUpload{}
	for i := 1; i <= 10; i++ {
		expectedETaghex := getMD5Hash(data)

		var calcPartInfo PartInfo
		calcPartInfo, err = obj.PutObjectPart(context.Background(), "bucket", "key", uploadID, i, mustGetPutObjReader(t, bytes.NewBuffer(data), int64(len(data)), expectedETaghex, ""), opts)
		if err != nil {

	}

	// Return success.
	return PartInfo{
		PartNumber:     partInfo.Number,
		ETag:           partInfo.ETag,
		LastModified:   partInfo.ModTime,
		Size:           partInfo.Size,
		ActualSize:     partInfo.ActualSize,
		ChecksumCRC32:  partInfo.Checksums["CRC32"],
		ChecksumCRC32C: partInfo.Checksums["CRC32C"],
		ChecksumSHA1:   partInfo.Checksums["SHA1"],
		ChecksumSHA256: partInfo.Checksums["SHA256"],
	}, nil
}

		startOffset int64, length int64, srcInfo ObjectInfo, srcOpts, dstOpts ObjectOptions) (info PartInfo, err error)
	PutObjectPart(ctx context.Context, bucket, object, uploadID string, partID int, data *PutObjReader, opts ObjectOptions) (info PartInfo, err error)
	GetMultipartInfo(ctx context.Context, bucket, object, uploadID string, opts ObjectOptions) (info MultipartInfo, err error)

			if err != nil {
				err = msgp.WrapError(err, "Parts")
				return
			}
			if cap(z.Parts) >= int(zb0002) {
				z.Parts = (z.Parts)[:zb0002]
			} else {
				z.Parts = make([]PartInfo, zb0002)
			}
			for za0001 := range z.Parts {
				bts, err = z.Parts[za0001].UnmarshalMsg(bts)
				if err != nil {
					err = msgp.WrapError(err, "Parts", za0001)
					return
				}
			}

						humanize.Ordinal(attempts), res.UploadID, tgtBucket, tgtObject, aerr))
				attempts++
				time.Sleep(time.Second)
			}
		}
	}()

	var (
		hr    *hash.Reader
		pInfo PartInfo
	)

	for i := 0; i < partsCount; i++ {
		gopts := miniogo.GetObjectOptions{
			VersionID:  srcObjInfo.VersionID,
			PartNumber: i + 1,
		}
		if err := gopts.SetMatchETag(srcObjInfo.ETag); err != nil {