[Xen-users] Fedora 7 - missing dummy interfaces

["David Mueller" <dsm717@xxxxxxxxx>]

I'm trying to move from Fedora Core 5 to Fedora 7.  I've run into an
issue where the xen guests, which need several bridged interfaces
bound to dummy devices, won't boot.  I think I've traced the problem
to a lack of the dummy1, dummy2, and dummy3 devices, and I'm not sure
how to fix it.  What I'll describe below is the setup that worked in
Fedora Core 5:

I used the following custom network-bridge script:

#!/bin/sh
dir=$(dirname "$0")
"$dir/network-bridge" "$@" vifnum=0 netdev=dummy0
"$dir/network-bridge" "$@" vifnum=1 netdev=dummy1
"$dir/network-bridge" "$@" vifnum=2 netdev=dummy2
"$dir/network-bridge" "$@" vifnum=3 netdev=dummy3

And the following line was used in the .xen files passed to xm create:

vif = ['mac=2E:22:22:22:22:20,bridge=xenbr1',
'mac=2E:22:22:22:22:21,bridge=xenbr2',
'mac=2E:22:22:22:22:22,bridge=xenbr3']

Running the script resulted in the following:

Using config file "./guest1.xen".
Error: Device 0 (vif) could not be connected. Could not find bridge
device xenbr1

If I try to run the custom network-bridge script manually passing the
"start" command I get several errors:

Device "dummy1" does not exist.
usage: ifdown <device name>
Device "dummy1" does not exist.
Cannot find device "dummy1"
SIOCGIFFLAGS: No such device
Device "dummy2" does not exist.
usage: ifdown <device name>
Device "dummy2" does not exist.
Cannot find device "dummy2"
SIOCGIFFLAGS: No such device
Device "dummy3" does not exist.
usage: ifdown <device name>
Device "dummy3" does not exist.
Cannot find device "dummy3"
SIOCGIFFLAGS: No such device

Any ideas on how to get this working would be greatly appreciated.

- David

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