ZFS filesystem size anomaly...

[Zaphod Beeblebrox]

On Wed, Dec 3, 2008 at 3:37 AM, Bernd Walter <ticso at cicely7.cicely.de>wrote:

> On Tue, Dec 02, 2008 at 06:04:21PM -0500, Zaphod Beeblebrox wrote:
> > This is all with ZFS version 6 in FreeBSD-7.1-RC, fyi...
> >
> > I have a machine with the ports tree mounted in ZFS right out of the
> > examples:
> >
> > [3:75:375]root at canoe:/usr/ports> zfs list | grep ports
> > canoe/ports                           3.54G  66.6G  2.35G  /usr/ports
> > canoe/ports/distfiles                 1.19G  66.6G  1.19G
> > /usr/ports/distfiles
> >
> > ... but the sizes here are curious.  1.2G for distfiles is about
> correct...
> > but 2.35G for the rest of ports is unreasonable.
>
> It always includes the subvolumes.
> So just canoe/ports alone is 2.35G - 1.19G.
> You can get more details with "zfs get all canoe/ports".


Yes... I understand that.  There is a 2G discrepancy.  Du on distfiles
agrees --- 1.2G vs. 1.19.  Du on ports says 1.6G --- including the 1.2 gig
in distfiles.  That means that du thinks that ports itself is 0.4 Gig, not
2.35 Gig.