[sarge] devfs_mk_dir errors at boot

[five0.oss@gmail.com]

I recently completed a Sarge installation on lvm2 on raid. While the
system appears to be working fine after a reboot, i found the following
error message slightly distracting:

devfs_mk_dir: invalid argument.<4>devfs_mk_dev: could not append to
parent for /disc

It appears a lot of times at boot, with no error message coming before
or after it.

I understand that it could be harmless, but I'd like to know why it's
occuring, and if there are ways to prevent it from occuring.

Thankyou.