ref: 390e726c64ee2aca967617ac7f7fd2a44f27646b
dir: /tests/test.2/notes/
Creates a disk of 40 blocks. Unmarked blocks are blank. Write to a /file1 and update the file using different offsets. Check that the contents match after each addition. # to see the raw contents of block 24 dd -if test.2/disk -bs 512 -skip 24 -count 1 | xd -c block - description 0 - /a/magic dir entry and data 1 - /a/config dir entry 2 - /a/super dir entry 3 - /a/ dir entry 4 - /a/ dir names entry 5 - /a/ dir long names entry 6 - /a/ dir long names extents entry 7 - /a/users/ dir entry 8 - /a/users/ dir names entry 9 - /a/users/ dir long names entry 10 - /a/users/ dir long names extents entry 11 - /a/bkp/ dir entry 12 - /a/bkp/ dir names entry 13 - /a/bkp/ dir long names entry 14 - /a/bkp/ dir long names extents entry 15 - /a/users/inuse dir entry 16 - /a/frees dir entry 17 - /a/ctl dir entry -- virtual file, empty contents 18 - /a/users/staging dir entry 19 - / dir entry 20 - / dir names entry 21 - / dir names entry 22 - / dir names extents entry 23 - /file1 blank dentry as /file1 was deleted but / still holds onto the dentry 44 - /a/bkp/root.0 dir entry 46 - /a/bkp/super.0 dir entry 47 - /a/bkp/config.0 dir entry