I did a newfs run on a sparse file and get a slighly different layout now: format FFSv1 endian little-endian magic 11954 time Thu Apr 30 10:53:04 2015 superblock location 8192 id [ 5541ed70 4107aafa ] cylgrp dynamic inodes 4.4BSD sblock FFSv2 fslevel 4 nbfree 7082771 ndir 1 nifree 14233853 nffree 14 ncg 611 size 57561588 blocks 56662183 bsize 16384 shift 14 mask 0xffffc000 fsize 2048 shift 11 mask 0xfffff800 frag 8 shift 3 fsbtodb 2 bpg 11795 fpg 94360 ipg 23296 minfree 5% optim time maxcontig 4 maxbpg 4096 symlinklen 60 contigsumsize 4 maxfilesize 0x000400400402ffff nindir 4096 inopb 128 avgfilesize 16384 avgfpdir 64 sblkno 8 cblkno 16 iblkno 24 dblkno 1480 sbsize 2048 cgsize 16384 csaddr 1480 cssize 10240 cgrotor 0 fmod 0 ronly 0 clean 0x01
Eliminating the dates, here are the changed lines: -nbfree 6806519 ndir 7534 nifree 14144970 nffree 15854 +nbfree 7082771 ndir 1 nifree 14233853 nffree 14 -ncg 610 size 57561588 blocks 56663655 +ncg 611 size 57561588 blocks 56662183 -bpg 11796 fpg 94368 ipg 23296 +bpg 11795 fpg 94360 ipg 23296 Martin
