Emulating different versions of FreeBSD

[Andreas Nilsson]

On Thu, Feb 18, 2010 at 6:26 PM, Mark Linimon <linimon at lonesome.com> wrote:

> On Thu, Feb 18, 2010 at 04:54:08PM +0100, Andreas Nilsson wrote:
> > Could the jail architecture be used to run/emulate different versions of
> > FreeBSD on the same machine?
>
> portmgr does that on the package build machines all the time.  AFAIK we
> don't do anything special to the kernel/userland we run in the jails.
>
> Of course, you need to make sure that what's in the jail is no newer than
> the native kernel/userland.
>
> mcl
>

Ok, that sounds great. Thanks for the swift response. So building for
example lsof in a 7.1 jail on a 8.0 host will report it being built on
7.1-RELEASE-pX?

Does it also work to run a 32-bit jail on a 64-bit host?

/Andreas