Re: [Xen-users] Re: bonding ethernet and xen 3.2.1 or later.

[Massimiliano De Ruosi <max.deruosi@xxxxxxxx>]

Solved! (thank you very much).

My setup is much simpler: at this point I'm not using vlans (I'd like  
to, but I have to hunt for a network admin before: they run away so  
quickly... ;-))
I tried to simply cut off vlan interfaces in /etc/network/interfaces,  
substituting bond0 to vlanX in bridge definition, but it didn't work:  
dom0 could not ping the gateway. I suppose a route issue (any idea?).
The solution for me was to set static ip on the bridge. I post my  
working setup: maybe it could help someone.
----------8<----------
# The loopback network interface
auto lo
iface lo inet loopback

auto bond0
iface bond0 inet manual
        slaves                 eth0 eth1
        bond_mode              active-backup
        bond_miimon            100
        bond_updelay           4000
        bond_primary           eth0

auto br0
iface br0 inet static
        address                192.168.1.106
        netmask                255.255.255.0
        gateway                192.168.1.1
        bridge_ports  bond0
        bridge_stp off
        bridge_fd 0

----------8<----------
This setup is still suboptimal for me: using bond_miimon is ok to  
detect a nic or a cable failure, but it cannot detect the fail of  
active path if the link doesn't go down. Using  bond_arp_ip_target  
(and bond_arp_interval) should be the solution, but it doesn't work in  
this configuration. I Keep work on it.
As you suggested, xend-config.sxp contains:
(network-script network-dummy)
(vif-script vif-bridge)

I use only one bridge, and one vif for my domU, so the domU config  
files contains:
vif = [ 'mac=00:16:3e:01:f0:73, bridge=br0' ]

Thank you again,
Max.

Quoting Ferenc Wagner <wferi@xxxxxxx>:

> Massimiliano De Ruosi <max.deruosi@xxxxxxxx> writes:
>
> > > Massimiliano De Ruosi <max.deruosi@xxxxxxxx> writes:
> > >
> > > > I've just set up xen (3.2.1 on Debian Lenny), enabled network-bridge
> > > > in xend-config.sxp and all seems to work properly. Then I've tried a
> > > > different setup: first I've created a bond device with two phisical
> > > > nics, but then, installing xen, network stops working!
> > > >
> > > > I've tried then to change the xend-config.sxp with: (network-script
> > > > 'network-bridge netdev=bond0') ...nope
> > > >
> > > > Is there anyone able to get xen (>3.2.1) working with bonding? If so,
> > > > can you point me to the correct way?
> > > Yes.  I use the network-dummy script and do all the bond/bridge setup
> > > in /etc/network/interfaces.  Works wonderfully.
> > Will you post me (or to the list) your setup? An anonymized extract of
> > your /etc/network/interfaces would be great!
> Why not.  This is bog-standard, has nothing to do with Xen at all:
>
> ----------8<----------
> # This file describes the network interfaces available on your system
> # and how to activate them. For more information, see interfaces(5).
>
> # The loopback network interface
> auto lo
> iface lo inet loopback
>
> # The primary network interface
> auto bond0
> iface bond0 inet static
>         address         10.253.2.7
>         netmask         255.255.255.0
>         gateway         10.253.2.254
>         slaves          eth-gb1 eth-gb2
>         bond_mode       active-backup
>         bond_miimon     100
>         bond_updelay    4000
>         bond_primary    eth-gb1
>
> auto vlan891
> iface vlan891 inet manual
>         vlan_raw_device bond0
>
> auto br891
> iface br891 inet manual
>         bridge_ports vlan891
>         bridge_stp off
>         bridge_fd 0
>
> auto vlan894
> iface vlan894 inet manual
>         vlan_raw_device bond0
>
> auto br894
> iface br894 inet manual
>         bridge_ports vlan894
>         bridge_stp off
>         bridge_fd 0
>
> auto vlan897
> iface vlan897 inet manual
>         vlan_raw_device bond0
>
> auto br897
> iface br897 inet manual
>         bridge_ports vlan897
>         bridge_stp off
>         bridge_fd 0
> ----------8<----------
>
> My two physical interfaces are eth-gb1 and eth-gb2; these names are
> prescribed by editing /etc/udev/rules.d/70-persistent-net.rules to
> match the interface names printed on the case.
>
> xend-config.sxp contains:
> (network-script network-dummy)
> (vif-script vif-bridge)
>
> and the domU config files contain lines like:
>
> vif = [ 'mac=00:16:3e:01:f0:73, bridge=br894',
>         'mac=00:16:3e:01:f0:75, bridge=br897' ]
> --
> Good luck,
> Feri.

----------------------------------------------------------------------
SEMEL (SErvizio di Messaging ELettronico) - CSIT -Universita' di Udine



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