Backing up freebsd to 1 file?

[Sergio de Almeida Lenzi]

> It kills everything ungracefully and will screw up anything that needs
> to sync state to disk -- like mysql.
> 
> Just use shutdown(8): it's what it's there for.
> 
>   # shutdown now "Going single user to make backups"
> 
> 	Cheers,
> 
> 	Matthew

Ok you are right... 

for me worked because I never use mysql...
but I use zfs  and I think that during shutdown, /etc/rc.d/zfs   is
called stop
so it unmounts all zfs partition...  (I did not tested...)...
so It must be called /etc/rc.d/zfs start again... (just a few
inconvenient...)

Thanks for the tip....

Sergio