evil idea

Jerry McAllister jerrymc at msu.edu
Mon Oct 29 09:02:47 PDT 2007

On Sat, Oct 27, 2007 at 10:16:50PM -0400, Aryeh M. Friedman wrote:

> mv wrote:
> > Hello,
> >
> > Would installing Freebsd i386 within a jail on an amd64 host solve his 
> > problem?
> >
> > I have been running amd64 since it was first released and am quite pleased 
> > with its performance and stability.   However, as a desktop there are still a 
> > number of programs that are only available on i386 and for a number of 
> > reasons I would prefer to run them within a jail.  I've searched the Internet 
> > and have not found anybody who has done it.
> >
> > My guess is that running a i386 program within a jail would run faster and 
> > perhaps be more stable than running the same program within qemu.
> >
> > Any tips on desirability, feasibility or how to do it would be greatly 
> > appreciated
> >   
> When I was first looking at this that was my idea but as far I can tell
> the jail needs to run the same kernel as the jailing OS.

Yes.   Jails are not really virtual machines.  They just wall off
a space for a process (and its children) to run in that only allows
the processes access to resources provided within the jail.

It is a very handy thing for appropriate uses, but it is not the
same as a virtual machine which provides a base environment over
which you install whole OSen.


> -- 
> Aryeh M. Friedman
> FloSoft Systems
> Developer, not Business, Friendly
> http://www.flosoft-systems.com
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