dlagno@mail.ru (Denis Lagno) writes:

>So, the reason why /flam and /flam/volatile remain mounted and
>/flam/stuffy doesn't is clear.

>But anyway it seems not very beatiful that client can not umount
>this filesystem.

It is the same reason. The umount command tries to access the
old mountpoint and fails because that mountpoint is invalid.

You can use the 'umount -R' command to bypass "all attempts to
be smart about mechanically determining the correct path from
the argument".

-- 
-- 
                                Michael van Elst
Internet: mlelstv@serpens.de
                                "A potential Snark may lurk in every tree."