capacity issue?

[Maxim Konovalov]

[...]
> output from df
> ---------------------------------------------------------------------------------
> Filesystem     Size    Used   Avail Capacity  Mounted on
> /dev/ad8s1a    494M     61M    394M    13%    /
> devfs          1.0K    1.0K      0B   100%    /dev
> /dev/ad8s4d     19G    497M     17G     3%    /home
> /dev/ad8s4f     98G    1.4G     89G     2%    /photo
> /dev/ad8s3d     57G    2.8G     49G     5%    /usr
> /dev/ad8s3e     19G     46M     17G     0%    /var
> /dev/ad8s4e     76G    5.0G     65G     7%    /www
>
> last time i checked (just as examples)
> 98G - 1.4G is not 89G  (/photo)
> 57G - 2.8G is not 49G  (/usr)
> 76G - 5.0G is not 65G  (/www)
>
> Can anyone tell me what's going on here?

VeryFAQ.  man tunefs, /-m

-- 
Maxim Konovalov