Heiko W.Rupp wrote:
> 
> Geoff Wing wrote:
> |Of course, union mounting isn't stable, so don't have more than one task doing
> |anything in there.
> 
> What exactly is not stable in there? You mean changing files in /usr/src
> and in the mount above at the same time? Or other things?

the union filesystem is known to be unstable. It still contains quite
a few bugs. I would be really great if someone actually tried to get
it fixed, but it seems noone bothered so far.

  Guenther