[Pkg-xen-devel] Bug#571634: Bug#571634: bridge loosing connection

Jochen Demmer jochen at winteltosh.de
Tue Sep 14 09:45:40 UTC 2010


  Unfortunately I'm not able to replace the kernel since grub in the 
domU doesn't recognize my xvda drive.
/usr/sbin/grub-probe: error: cannot find a GRUB drive for /dev/xvda2.  
Check your device.map.

I then inserted "(hd0) /dev/xvda" into the /boot/grub/devices.map but 
with no luck.
I'm still getting the bridge-breakdowns. The bridge itself seems to be 
up but only restarting the domU helps. "/etc/init.d/networking restart" 
has no effect nor does "ifconfig eth1 down && ifconfig eth1 up".

Please help.

Am 06.09.10 11:21, schrieb Pasi Kärkkäinen:
> On Mon, Sep 06, 2010 at 10:31:28AM +0200, Jochen Demmer wrote:
>>     Hi,
>>
>>     I'm not sure but I think I suffer under the same problem with a bit
>>     different setup with squeeze testing and xen 4.0rc5.
>>     In fact I'm using bridges in the dom0 and the connections to the domU get
>>     lost sporadically.
>>     In don't see where's a solution to the problem... Is it now a bug? When
>>     it's an iptables bug, where's the corresponding bug in the iptables
>>     bugtracker and what exactly is iptables doing wrong.
>>     You stated "...but as the syslog message clearly indicates this rule works
>>     perfectly when the traffic is bridged."
>>     I'm using bridges but it's not working obviously.
>>
> I don't really see any errors in the log below.
>
> Have you tried using different kernel in the domU?
> If network is fine from dom0, then this sounds like a bug in the domU kernel.
>
> What kernel are you running in the domU?
>
> -- Pasi
>
>
>>     /etc/network/interfaces
>>     auto br0
>>     allow-hotplug br0
>>     iface br0 inet static
>>     address 10.100.200.20
>>     netmask 255.255.255.0
>>     dns-nameservers 10.100.200.3
>>     gateway 10.100.200.3
>>     bridge_ports eth0
>>
>>     allow-hotplug br1
>>     auto br1
>>     iface br1 inet manual
>>     bridge_ports eth1
>>
>>     This is my logs:
>>     Sep  6 09:47:14 elise kernel: [71970.564974] br1: port 2(vif1.1) entering
>>     disabled state
>>     Sep  6 09:47:14 elise kernel: [71970.578040] br1: port 2(vif1.1) entering
>>     disabled state
>>     Sep  6 09:47:14 elise kernel: [71970.718785] physdev match: using
>>     --physdev-out in the OUTPUT, FORWARD and POSTROUTING chains for
>>     non-bridged traffic is not supported anymore.
>>     Sep  6 09:47:14 elise kernel: [71970.718797] physdev match: using
>>     --physdev-out in the OUTPUT, FORWARD and POSTROUTING chains for
>>     non-bridged traffic is not supported anymore.
>>     Sep  6 09:47:14 elise kernel: [71970.718803] physdev match: using
>>     --physdev-out in the OUTPUT, FORWARD and POSTROUTING chains for
>>     non-bridged traffic is not supported anymore.
>>     Sep  6 09:47:14 elise kernel: [71970.724864] physdev match: using
>>     --physdev-out in the OUTPUT, FORWARD and POSTROUTING chains for
>>     non-bridged traffic is not supported anymore.
>>     Sep  6 09:47:14 elise kernel: [71970.724874] physdev match: using
>>     --physdev-out in the OUTPUT, FORWARD and POSTROUTING chains for
>>     non-bridged traffic is not supported anymore.
>>     Sep  6 09:47:15 elise kernel: [71970.871846] br0: port 2(vif1.0) entering
>>     disabled state
>>     Sep  6 09:47:15 elise kernel: [71970.890073] br0: port 2(vif1.0) entering
>>     disabled state
>>     Sep  6 09:47:15 elise kernel: [71971.010275] physdev match: using
>>     --physdev-out in the OUTPUT, FORWARD and POSTROUTING chains for
>>     non-bridged traffic is not supported anymore.
>>     Sep  6 09:47:15 elise kernel: [71971.010286] physdev match: using
>>     --physdev-out in the OUTPUT, FORWARD and POSTROUTING chains for
>>     non-bridged traffic is not supported anymore.
>>     Sep  6 09:47:15 elise kernel: [71971.016391] physdev match: using
>>     --physdev-out in the OUTPUT, FORWARD and POSTROUTING chains for
>>     non-bridged traffic is not supported anymore.
>>     Sep  6 09:47:17 elise kernel: [71972.912040] device vif3.0 entered
>>     promiscuous mode
>>     Sep  6 09:47:17 elise kernel: [71972.915898] br0: port 2(vif3.0) entering
>>     learning state
>>     Sep  6 09:47:17 elise kernel: [71972.948656] physdev match: using
>>     --physdev-out in the OUTPUT, FORWARD and POSTROUTING chains for
>>     non-bridged traffic is not supported anymore.
>>     Sep  6 09:47:17 elise kernel: [71972.953266] physdev match: using
>>     --physdev-out in the OUTPUT, FORWARD and POSTROUTING chains for
>>     non-bridged traffic is not supported anymore.
>>     Sep  6 09:47:17 elise kernel: [71972.953273] physdev match: using
>>     --physdev-out in the OUTPUT, FORWARD and POSTROUTING chains for
>>     non-bridged traffic is not supported anymore.
>>     Sep  6 09:47:17 elise kernel: [71972.986255] device vif3.1 entered
>>     promiscuous mode
>>     Sep  6 09:47:17 elise kernel: [71972.990441] br1: port 2(vif3.1) entering
>>     learning state
>>     Sep  6 09:47:17 elise kernel: [71973.011096] physdev match: using
>>     --physdev-out in the OUTPUT, FORWARD and POSTROUTING chains for
>>     non-bridged traffic is not supported anymore.
>>     Sep  6 09:47:17 elise kernel: [71973.011102] physdev match: using
>>     --physdev-out in the OUTPUT, FORWARD and POSTROUTING chains for
>>     non-bridged traffic is not supported anymore.
>>     Sep  6 09:47:17 elise kernel: [71973.016383] physdev match: using
>>     --physdev-out in the OUTPUT, FORWARD and POSTROUTING chains for
>>     non-bridged traffic is not supported anymore.
>>     Sep  6 09:47:17 elise kernel: [71973.016392] physdev match: using
>>     --physdev-out in the OUTPUT, FORWARD and POSTROUTING chains for
>>     non-bridged traffic is not supported anymore.
>>     Sep  6 09:47:17 elise kernel: [71973.016398] physdev match: using
>>     --physdev-out in the OUTPUT, FORWARD and POSTROUTING chains for
>>     non-bridged traffic is not supported anymore.
>>     Sep  6 09:47:18 elise kernel: [71974.706987] blkback: ring-ref 8,
>>     event-channel 8, protocol 1 (x86_64-abi)
>>     Sep  6 09:47:18 elise kernel: [71974.734701] blkback: ring-ref 9,
>>     event-channel 9, protocol 1 (x86_64-abi)
>>     Sep  6 09:47:32 elise kernel: [71987.913527] br0: port 2(vif3.0) entering
>>     forwarding state
>>     Sep  6 09:47:32 elise kernel: [71987.988031] br1: port 2(vif3.1) entering
>>     forwarding state
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