func (s *storageRESTServer) StatVolHandler(params *grid.MSS) (*VolInfo, *grid.RemoteErr) {
	if !s.checkID(params.Get(storageRESTDiskID)) {
		return nil, grid.NewRemoteErr(errDiskNotFound)
	}
	info, err := s.getStorage().StatVol(context.Background(), params.Get(storageRESTVolume))
	if err != nil {
		return nil, grid.NewRemoteErr(err)
	}
	return &info, nil
}

// AppendFileHandler - append data from the request to the file specified.