fsck found some problems - creating large files

[elliott-beach]

Creating large files can result in non-allocated blocks:

⋊> ~/m/p/project3 on fsck ⨯ ./mkfs filesys.dat 2048 2048                                                                                                                                             
⋊> ~/m/p/project3 on fsck ⨯ python -c 'print("xy" * 15 * 2048)' | ./tee /bigfile >/dev/null                                                                                  19:38:13
⋊> ~/m/p/project3 on fsck ⨯ ./fsck                                                                                                                                                                   19:38:16
error: inode 0 has 1 links but nLinks is set to 3
error: block 12 is not mentioned in inodes but is marked as allocated