data->allocate_compressed_data(ostat.st_size);
data->set_compressed_size(ostat.st_size);
(void)fread(data->get_data(), ostat.st_size, 1, fd);
data->allocate_compressed_data(ostat.st_size);
data->set_compressed_size(ostat.st_size);
(void)fread(data->get_data(), ostat.st_size, 1, fd);