[Xen-users] Mixed DomU Architectures

["Dan Hawker" <danhawker@xxxxxxxxxxxxxxx>]

Hi All,

Quick question that is slightly OT, but is Xen related.

Just got a new server thru the door and have a couple of questions.

Am running Xen 3.0.2 on it (dual Xeon HP server with 4GB RAM). Runs like a
charm. As its a new machine it came with 2x EM64T Xeons. The Dom0 is a FC5
x86_64 install. My DomUs are mostly FC4 i386 installs (I have an i386
based container of FC4 I use as a template) that I combine with the x86_64
DomU kernel that came with FC5.

As mentioned, works fine.

One of the key plans for this box is as a place for software developers to
compile/build etc, without nasty pieces of software killing the box as a
whole. The plan is one VM per team of about 4.

My only stumbler is the fact that my VMs naturally announce themselves
(uname) as x86_64 machines, however the target for the software is i386
only. Now I know you can set the arch using setarch (and this works as
expected) however this only works on a command-by-command basis.

I have found out (by reading this list mostly) that you cannot mix kernel
architectures within Xen. ie you can't have a x86_64 Dom0 kernel and mixed
x86_64 and i386 DomUs, so I can't just install a pure 32bit DomU for these
dev VMs.

Does anyone know a way of setting setarch permanently (rather than running
it at every command) or someother cunning plan so that when building, the
dev VM will respond with a *i'm an i386 machine* rather than an x86_64.

TIA

Dan



_______________________________________________
Xen-users mailing list
Xen-users@xxxxxxxxxxxxxxxxxxx
http://lists.xensource.com/xen-users