Interesting fs usage issue

[David D.W. Downey]

 Here's something itneresting for you guys to chew on.

Release Info
-------------------
FreeBSD 5.4-PRERELEASE #4

Build Date
---------------
Tue Mar 22 02:15:53 EST 2005  i386

mount info
-----------------
/dev/ad0s1d on /tmp (ufs, local, soft-updates)

fstab info
----------------
/dev/ad0s1d             /tmp            ufs     rw              2      
2

Now the interesting point

df info
----------
/dev/ad0s1d    989M   -444K    911M    -0%    /tmp

and finally,

fbdev# du -hs /tmp
26K    /tmp
fbdev#


Anyone mind explaining this?

--
David D.W. Downey
CyberSpace Technologies
Site: www.cyberspacetech.com
Toll Free: (866) 660-2303
Fax: (480) 247-4231
PGP Fingerprint: 19A5 0C7E 060C 2618 E8C1  AAFD C4D3 FD7E 6C4C 74E4