df(1) and missing space in partition /dev/ada0p2

[Matthias Apitz]

Hello,

I hace setup a fresh 10.0-CURRENT, this time using gpart(8) and I do not
understand why the sum of Used and Avail does not equal to the full
space of /dev/ada0p2:

$ uname -a
FreeBSD aurora-clone.Sisis.de 10.0-CURRENT FreeBSD 10.0-CURRENT #2 r235646M: Thu Jul  5 09:38:00 UTC 2012 root at aurora-clone.Sisis.de:/usr/obj/usr/src/sys/GENERIC  i386
$ df -k
Filesystem  1024-blocks     Used    Avail Capacity  Mounted on
/dev/ada0p2    74130588 25389436 42810708    37%    /
devfs                 1        1        0   100%    /dev
linprocfs             4        4        0   100%    /compat/linux/proc
/dev/md0         126492       24   116352     0%    /tmp
$ echo '25389436+42810708' | bc
68200144

in some older system, which was setup the 'traditional way', it does:

$ uname -a
FreeBSD tinyCurrent 9.0-CURRENT FreeBSD 9.0-CURRENT #1 r214444: Thu Oct 28 10:56:32 CEST 2010 guru at current.Sisis.de:/usr/home/guru/myThings/FreeBSD/9-CURRENT/obj/usr/home/guru/myThings/FreeBSD/9-CURRENT/src/sys/GENERIC i386
$ df -k
Filesystem  1024-blocks      Used     Avail Capacity  Mounted on
/dev/ad4s1a     1012974    301092    711882    30%    /
devfs                 1         1         0   100%    /dev
/dev/ad4s1d     5049390    132150   4917240     3%    /var
/dev/ad4s1e     1012974    285258    727716    28%    /tmp
/dev/ad4s1f   227454428 122082964 105371464    54%    /usr
linprocfs             4         4         0   100%    /compat/linux/proc
$ echo '122082964+105371464' | bc
227454428

Any idea?

	matthias

-- 
Matthias Apitz
t +49-89-61308 351 - f +49-89-61308 399 - m +49-170-4527211
e <guru at unixarea.de> - w http://www.unixarea.de/
UNIX since V7 on PDP-11 | UNIX on mainframe since ESER 1055 (IBM /370)
UNIX on x86 since SVR4.2 UnixWare 2.1.2 | FreeBSD since 2.2.5