Can you drawterm to your cpu/fs host ?
Try mount 9P with debug=0x01

2006/11/16, Adrian Tritschler <ajft@ajft.org>:
Sergey Zhilkin wrote:
> Hi! Try mount under root.
> Check /etc/sudoers for correct permissions.

sudoers lets my account do anything :-)

However, just to keep you happy:

fafnir:/tmp# mount -t 9p -o user=ajft 10.0.0.123 /mnt
mount: permission denied
fafnir:/tmp# tail /var/log/syslog
:
Nov 16 18:23:06 localhost kernel: [17212825.952000] v9fs_errstr2errno:
errstr :cannot attach as none before authentication^E: not found

> I'm using it, and 9P works fine.

        Adrian