geli(8) makes more room on drive

[Christian Baer]

Hi Peeps!

Can someone explain this?

I partitioned a drive (WD3200SD) to have only one big 
partition (/dev/ad10s1d). Then I did this:

jon# newfs -O2 -U -o space -m 0 /dev/ad10s1d
jon# mount /dev/ad10s1d /doof
jon# df -h
Filesystem          Size    Used   Avail Capacity  Mounted on
/dev/ad10s1d        289G    4.0K    289G     0%    /doof

jon# umount /doof
jon# geli init -s 4096 -l 256 /dev/ad10s1d
jon# geli attach /dev/ad10s1d
jon# newfs -O2 -U -o space -m 0 /dev/ad10s1d.eli
[output of newfs snip...]
jon# df -h
Filesystem          Size    Used   Avail Capacity  Mounted on
/dev/ad10s1d.eli    293G    8.0K    293G     0%    /doof

How does that work???

Regards
Chris