Large Disks lose loads of diskspace

[David Kelly]

On Aug 19, 2004, at 6:17 AM, duncan wrote:

> I installed 2 new 200gb harddrives lately. Both show up in bios as 
> 200gb, on boot they are shown as 190gb (probably the 1000->1024 
> conversion), but when I create a filesystem they are only 180gb.
> Now, I can live with a 20gb loss, but when I check the disks free 
> space, they have only 166gb free with 0 gb used. Could be me, but I 
> find 34gb a bit excessive. I hope anyone has a clue as to what I'm 
> doing wrong.
>
> Hope someone knows what is going on.

newfs(1) says:

>      -m free-space
>              The percentage of space reserved from normal users; the 
> minimum
>              free space threshold.  The default value used is defined 
> by
>              MINFREE from <ufs/ffs/fs.h>, currently 8%.  See tunefs(8) 
> for
>              more details on how to set this option.

180 - 8% = 165.6

--
David Kelly N4HHE, dkelly at HiWAAY.net
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