return err
	}
	return d.disk.AppendFile(ctx, volume, path, buf)
}

func (d *naughtyDisk) RenameData(ctx context.Context, srcVolume, srcPath string, fi FileInfo, dstVolume, dstPath string, opts RenameOptions) (RenameDataResp, error) {
	if err := d.calcError(); err != nil {
		return RenameDataResp{}, err
	}
	return d.disk.RenameData(ctx, srcVolume, srcPath, fi, dstVolume, dstPath, opts)
}

	ReadVersion(ctx context.Context, origvolume, volume, path, versionID string, opts ReadOptions) (FileInfo, error)
	ReadXL(ctx context.Context, volume, path string, readData bool) (RawFileInfo, error)
	RenameData(ctx context.Context, srcVolume, srcPath string, fi FileInfo, dstVolume, dstPath string, opts RenameOptions) (RenameDataResp, error)

	// File operations.

	}
	err = st.Results(func(r *CheckPartsResp) error {
		resp = r
		return nil
	})
	return resp, toStorageErr(err)
}

// RenameData - rename source path to destination path atomically, metadata and data file.
func (client *storageRESTClient) RenameData(ctx context.Context, srcVolume, srcPath string, fi FileInfo,
	dstVolume, dstPath string, opts RenameOptions,
) (res RenameDataResp, err error) {

		return objInfo, wquorum, toObjectErr(errMethodNotAllowed, bucket, object)
	}

	return objInfo, wquorum, nil
}

// Similar to rename but renames data from srcEntry to dstEntry at dataDir
func renameData(ctx context.Context, disks []StorageAPI, srcBucket, srcEntry string, metadata []FileInfo, dstBucket, dstEntry string, writeQuorum int) ([]StorageAPI, []byte, string, error) {
	g := errgroup.WithNErrs(len(disks))

}

func skipAccessChecks(volume string) (ok bool) {
	return strings.HasPrefix(volume, minioMetaBucket)
}

// RenameData - rename source path to destination path atomically, metadata and data directory.
func (s *xlStorage) RenameData(ctx context.Context, srcVolume, srcPath string, fi FileInfo, dstVolume, dstPath string, opts RenameOptions) (res RenameDataResp, err error) {
	defer func() {

type WriteAllHandlerParams struct {
	DiskID   string `msg:"id"`
	Volume   string `msg:"v"`
	FilePath string `msg:"fp"`
	Buf      []byte `msg:"b"`
}

// RenameDataResp - RenameData()'s response.
// Provides information about the final state of Rename()
//   - on xl.meta (array of versions) on disk to check for version disparity
//   - on rewrite dataDir on disk that must be additionally purged

	w := xioutil.NewDeadlineWorker(globalDriveConfig.GetMaxTimeout())
	return w.Run(func() error { return p.storage.RenameFile(ctx, srcVolume, srcPath, dstVolume, dstPath) })
}

func (p *xlStorageDiskIDCheck) RenameData(ctx context.Context, srcVolume, srcPath string, fi FileInfo, dstVolume, dstPath string, opts RenameOptions) (res RenameDataResp, err error) {

				// Skip tierFVID, tierFVMarker keys; it's used
				// only for creating free-version.
				// Also skip xMinIOHealing, xMinIODataMov as used only in RenameData
				switch k {
				case tierFVIDKey, tierFVMarkerKey, xMinIOHealing, xMinIODataMov:
					continue
				}

				ventry.ObjectV2.MetaSys[k] = []byte(v)
			} else {
				ventry.ObjectV2.MetaUser[k] = v

func (s *storageRESTServer) RenameDataHandler(p *RenameDataHandlerParams) (*RenameDataResp, *grid.RemoteErr) {
	if !s.checkID(p.DiskID) {
		return nil, grid.NewRemoteErr(errDiskNotFound)
	}

	resp, err := s.getStorage().RenameData(context.Background(), p.SrcVolume, p.SrcPath, p.FI, p.DstVolume, p.DstPath, p.Opts)
	return &resp, grid.NewRemoteErr(err)
}

// RenameDataInlineHandler - renames a meta object and data dir to destination.

		if err == nil {
			er.deleteAll(context.Background(), minioMetaMultipartBucket, uploadIDPath)
		}
	}()

	// Rename the multipart object to final location.
	onlineDisks, versions, oldDataDir, err := renameData(ctx, onlineDisks, minioMetaMultipartBucket, uploadIDPath,
		partsMetadata, bucket, object, writeQuorum)
	if err != nil {
		return oi, toObjectErr(err, bucket, object, uploadID)
	}