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RE: [Xen-users] installing DomU with two network bridges viavirt-install

PS--I should say that in regards to my original question,
if I have two bridges already running on my dom0, it
is possible to install the domU with just one, and then
add the second one post-installation and that works just fine.
I am just wondering if it's possible to use virt-install to
get them both installed from the start.

Steve Timm

On Wed, 1 Apr 2009, Ferreira, N.L. wrote:

Hey Steven

OUt of curiosity, what is you dom0 configuration (OS and xen ver.)
I'm struggling to put 2 NICs (& 2 bridges) on a CentOS52 x64, running gitco xen 


-----Original Message-----
From: xen-users-bounces@xxxxxxxxxxxxxxxxxxx on behalf of Steven Timm
Sent: Wed 01-Apr-09 9:42 PM
To: xen-users@xxxxxxxxxxxxxxxxxxx
Subject: [Xen-users] installing DomU with two network bridges viavirt-install

I have a Xen DomU configuration that was made in the days before
libvirt and virt-install.   In this configuration
I have:

vif = [ 'mac=00:16:3e:05:06:01, bridge=xenbr0', 'mac=00:16:3e:05:06:0a,
bridge=xenbr1' ]

and then in xend-config.sxp I define

(network-script my-network-bridge)

where my-network-bridge is in the scripts directory and looks like this:

[root@fermigrid6 xen]# more scripts/my-network-bridge
# start bridges on both eth0 and eth1


$XENDIR/network-bridge "$@" netdev=eth0 bridge=xenbr0 vifnum=0
$XENDIR/network-bridge "$@" netdev=eth1 bridge=xenbr1 vifnum=1

Is there a way to automate all or part of this with virt-install?
I'm guessing that I would still have to hack the xend-config.sxp
to get xenbr0 and xenbr1 started on dom0 in the first place,
but once that is done, would it be possible to have
two network interfaces specified via the --bridge argument
of virt-install, where one would have --bridge=xenbr0 and the other
would have --bridge=xenbr1?


Steve Timm

Steven C. Timm, Ph.D  (630) 840-8525
timm@xxxxxxxx  http://home.fnal.gov/~timm/
Fermilab Computing Division, Scientific Computing Facilities,
Grid Facilities Department, FermiGrid Services Group, Assistant Group Leader.

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