Can't export PFS or null mount to Linux

[Michael Neumann]

Hi,

The NFS server is running on DragonFly 2.2. I'm trying to export
for example /usr which is null-mounted from /pfs/usr. I can
successfully mount the NFS export with DragonFly, but when I do so from
Linux (Ubuntu 8.10), I get an empty directory.  If I export a not-null
mounted directory (like / for example), it works!

So it really seems that Linux stops at null mounted directories. Maybe
there is an option? Any suggestions?

I tried to directory export the /pfs/usr, but as this is a symlink, it
doesn't work as well.

Regards,

  Michael