Networking Problem with KVM Virtual Machine Migration

[Joshua Martin]

I'm having trouble with moving my KVM virtual machines from one machine to
another - I'm using Ubuntu 8.04 Server Edition.

When I copy my virtual machine over to the new server, it won't connect to
the network for some reason. If I create a new virtual machine on the same
server, it will properly utilize the network. I should mention that all of
my VM's are Ubuntu 8.04 and 8.10...

Trying to start the networking on the VM by using the command "sudo
/etc/init.d/networking start" only produces the following error:

 * Configuring network interfaces...
eth0: ERROR while getting interface flags: No such device
SIOCSIFADDR: No such device
eth0: ERROR while getting interface flags: No such device
SIOCSIFNETMASK: No such device
SIOCSIFBRDADDR: No such device
eth0: ERROR while getting interface flags: No such device
eth0: ERROR while getting interface flags: No such device
Failed to bring up eth0.


I've setup a network bridge on my server with the following code in
/etc/network/interfaces

# The loopback network interface
auto lo
iface lo inet loopback

auto eth0
iface eth0 inet manual

# The primary network interface
auto br0
iface br0 inet static
        address 192.168.1.10
        netmask 255.255.255.0
        network 192.168.1.0
        broadcast 192.168.1.255
        gateway 192.168.1.1
        bridge_ports eth0
        bridge_fd 9
        bridge_hello 2
        bridge_maxage 12
        bridge_stp off


I create each of my virtual machines with the following command - the hard
drive image is simply the one I copied over from the old server, when I'm
prompted by the already booting CD image, I simply restart and I've got my
migrated virtual machine:

sudo virt-install -n test -r 256 -f test.img -s 10 -c
ubuntu-8.10-server-i386.iso --accelerate --vnc --noautoconsole

-- 
_________________________________

Joshua S. Martin

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