In message <43969DDC.2080408@ootani.nagata.kobe.jp>, MASUDA Hideo writes:
>Hi, all.
>
># uname -a
>NetBSD xenu 3.99.13 NetBSD 3.99.13 (DSM_XENU) #1: Wed Dec 7 16:59:56 JST 2005
>h-masuda@dsmserv.dsm.cis.kit.ac.jp:/usr/current/src/sys/arch/i386/compile/DSM_
>XENU i386
># mount -t mfs -o -s=10240,-p=755 none /.var
># mount -t union /.var /var
>
> Using mfs is OK, but,
>
># mount -t tmpfs -o -m=755 none /.var
># mount -t union /.var /var
>mount_union: /.var on /var: Operation not supported
>
> Any idea?

I posted about that a few months ago -- it's just not supported.


		--Steven M. Bellovin, http://www.cs.columbia.edu/~smb