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
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