I have made some changes to the way the network scripts are handled, in order
to make it easier for those of you with non-standard configurations.
o All scripts now cope with parameters being passed on the command line, and
this command line may be specified in the xend-config.sxp.
o The vif-bridge script can autodetect the correct bridge name, if you are
using only one.
o The vif-bridge option in xend-config.sxp has gone. If you need this
functionality, specify it on the script command line, instead.
o If the default config worked for you before, then it should still work.
For example, if you are using this topology, the default bridged one:
dom0: fake eth0 -> vif0.0 -+
|
bridge (xenbr0) -> real eth0 -> the network
|
domU: fake eth0 -> vifN.0 -+
then
(network-script network-bridge)
(vif-script vif-bridge)
should suffice.
If, like Sean Dague, you are renaming the bridge, like this:
dom0: fake eth0 -> vif0.0 -+
|
bridge (br0) -> real eth0 -> the network
|
domU: fake eth0 -> vifN.0 -+
then you want
(network-script 'network-bridge bridge=br0')
(vif-script vif-bridge)
or if you have other bridges on your machine, but all the domUs use the same
bridge, then you want
(network-script 'network-bridge bridge=br0')
(vif-script 'vif-bridge bridge=br0')
If you need to use a different NIC than eth0, say eth1, like the "IBM blades":
dom0: fake eth0 -> vif0.0 -+
|
bridge -> real eth1 -> the network
|
domU: fake eth0 -> vifN.0 -+
then you want
(network-script 'network-bridge netdev=eth1')
(vif-script vif-bridge)
If, like Charles Duffy, you want two bridges:
dom0: fake eth0 -> vif0.0 ----------------------------+
dom0: fake eth1 -> vif0.1 ---+ |
| |
| bridge 0 -> real eth0
| |
bridge 1 -> real eth1 |
| |
| |
domU: fake eth0 -> vifN.0 ----------------------------+
domU: fake eth1 -> vifN.1 ---+
then you need to create a wrapper script:
(network-script my-network-script)
and in /etc/xen/scripts/my-network-script:
#!/bin/sh
dir=$(dirname "$0")
"$dir/network-bridge" vifnum=0
"$dir/network-bridge" vifnum=1
If you want non-bridged topologies, then you have to use different scripts.
Michael Lessard, I believe, wants this:
dom0: ---------------------> real eth0 -> the network
dom1: fake eth0 -> vif1.0 -> real eth1 -> the network
In which case I think you want
(network-script network-route)
(vif-script vif-route)
though you might need some extra hacking to make this work, and I would be
interested in your success.
If you want to handle initial networking through the init.d scripts, as Greg
Brackley wanted, IIRC, then simply don't specify a network-script (this has
worked for a week or so now) and specify an appropriate vif-script instead.
Greg, if you've got anywhere with your VLAN/domU setup, I'd be interested.
If I claim your topology should work and it doesn't, then I would appreciate a
full set of info:
from dom0:
brctl show
ifconfig
route
iptables -L
cat /var/log/{debug,messages,syslog}
and from domU:
ifconfig
route
iptables -L
And if you want a topology that's not here, feel free to shout!
Happy networking,
Ewan.
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