unmount ZFS on shutdown, # KEYWORD: shutdown

Hi,

When using ZFS as root file system, on shutdown it's reporting:
    Force unmount is experimental - report any problems.

Force unmount was disabled, but then re-enabled.

I also found this thread:
http://www.freebsd.org/cgi/getmsg.cgi?fetch=863639+0+/usr/local/www/db/text/2007/cvs-src/20070415.cvs-src


If I have 25+ ZFS file systems, console screen is full with those
warnings, but anyway why just not to unmount unused file systems on
shutdown and if there are any kind of problems with forced unmounts,
then they will hurt only /, /var, /var/log, ...




-- 
Artis Caune

    Everything should be made as simple as possible, but not simpler.