evil idea

mv mrkvrg at acm.org
Sat Oct 27 19:16:29 PDT 2007


Would installing Freebsd i386 within a jail on an amd64 host solve his 

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 


On Sat, 27 October 2007 20:33:44 Giorgos Keramidas wrote:
> On 2007-10-26 23:34, Astrodog <astrodog at gmail.com> wrote:
> >On 10/26/07, Aryeh M. Friedman <aryeh.friedman at gmail.com> wrote:
> >> I am running amd64 8-CURRENT and there are a few i386 only ports that I
> >> absolutely must have installed and at the same time since I have 4 GB of
> >> RAM all kinds of bizarreness is created if I "downgrade" to i386.   So
> >> here is the idea:   use qemu to create a virtual version of my machine
> >> (with less then 2GB or RAM) and install i386 8-CURRENT on it (I want to
> >> use -CURRENT for all my installs)
> >>
> >> Any thing I should watch out for here (I know I need to use NFS or
> >> something like it to share files between the host and guest OS's)
> >
> > There's actually a known system that will work for this. You can use
> > your existing swap partition, as an "extra" root partition, installing
> > there, then booting to that, then rebuild/install to your original
> > partition. Its the same basic idea as the method for updating from
> > 4.x->7.x, and should be on the lists. (Note to docs, might be worth
> > putting it somewhere.)
> I don't think Aryeh wants to "install i386 over his current amd64".
> What he seems to be asking is if he can run *two* versions, one of
> them as a virtualized host under qemu.  That should work, AFAIK.
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