filesystem size after newfs
mojo fms
fbsdlilly at gmail.com
Tue Aug 11 02:14:01 UTC 2009
On Mon, Aug 10, 2009 at 3:55 PM, Naeem Afzal <nafzal at hotmail.com> wrote:
>
> I created this small partition of 512K bytes on disk, I am noticing
> about 24% is used up before system can be mounted and used. My assumption
> was about 4% is supposed to be used if minfree is set to 0.
>
> #newfs -U -l -m 0 -n -o space /dev/ad1d
> /dev/ad1d: 0.5MB (1024 sectors) block size 16384, fragment size 2048
> using 1 cylinder groups of 0.50MB, 32 blks, 64 inodes with soft updates
> super-block backups (for fsck -b #) at:
> 160
> #mount /dev/ad1d /test
> #df -H /test
> Filesystem Size Used Avail Capacity Mounted on
> /dev/ad1d 391k 2.0k 389k 1% /test
> Could someone explain where the 512-391=121K of disk space went to? What
> is the relation between this used of space and total paritition size or is
> it some fixed ratio?
> Thanks & Regards
> Naeem
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5% to root, and the rest i am assuming file system blocks. Try making the
512k partition bigger accounting for those things and you should be able to
get it really close to 512k available.
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