printf(" Blocks: %"PRIu64"\n", aux_info.len_blocks);
printf(" Block groups: %d\n", aux_info.groups);
+ printf(" Reserved blocks: %"PRIu64"\n", (aux_info.len_blocks / 100) * info.reserve_pcnt);
printf(" Reserved block group size: %d\n", info.bg_desc_reserve_blocks);
ext4_sparse_file = sparse_file_new(info.block_size, info.len);