a curious jails question

[Wojciech Puchar]

> ive been building jails for a while, and have always used the canonical 
> method as listed out in the handbook.  today, i tried something new.  i have 
> read that instead of doing:
>
> make world ...
> make distribution ...
>
> that you can instead:
>
> make installworld ...
> make distribution ...

i know even better - make one jail and copy in to another.

first - get base distribution (possibly more) and unpack it.

even better - make common /usr and use mount_nullfs on each jail