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[Xen-users] Problems with bridged networking

from [Thomas Robers] [Permanent Link][Original]
To: xen-users@xxxxxxxxxxxxxxxxxxx
Subject: [Xen-users] Problems with bridged networking
From: Thomas Robers <robers@xxxxxxxxx>
Date: Tue, 09 Sep 2008 16:30:34 +0200
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User-agent: Mozilla/5.0 (X11; U; Linux i686; de; rv:1.8.1.16) Gecko/20080720 SUSE/2.0.0.16-1.1 Thunderbird/2.0.0.16 Mnenhy/0.7.5.666 
Hi,

I'm using Xen 3.0.3 on two servers with Debian Etch (amd64). These
servers have 10 nics (2 onboard and 8 in two 4-port cards) so that
every vm can have its own interface.
This worked so far with the Xen Version from Etch with a wrapper
script wich started 10 bridges at boot time. But now I've updated Xen
on one of these server to Xen 3.2.0 from backports.org and now the
network doesn't work anymore resp not like it should.
When I use the wrapper script the server doesn't have any network
connection and when I use the 'network-bridge' script from Xen 3.2.0
I get the machine connected to the network but without any bridge,

ifconfig tells me this:
server:~# ifconfig eth0 Protokoll:Ethernet Hardware Adresse 00:0E:0C:43:AB:3D inet Adresse:XXX.XXX.XXX.XXX Bcast:XXX.XXX.XXX.XXX Maske:255.255.255.192 
          inet6 Adresse: fe80::20e:cff:fe43:ab3d/64 
Gültigkeitsbereich:Verbindung
          UP BROADCAST RUNNING MULTICAST  MTU:1500  Metric:1
          RX packets:14954 errors:0 dropped:0 overruns:0 frame:0
          TX packets:1314 errors:0 dropped:0 overruns:0 carrier:0
Kollisionen:0 Sendewarteschlangenlänge:0 RX bytes:2067814 (1.9 MiB) TX bytes:136934 (133.7 KiB)
lo Protokoll:Lokale Schleife inet Adresse:127.0.0.1 Maske:255.0.0.0 
          inet6 Adresse: ::1/128 Gültigkeitsbereich:Maschine
          UP LOOPBACK RUNNING  MTU:16436  Metric:1
          RX packets:0 errors:0 dropped:0 overruns:0 frame:0
          TX packets:0 errors:0 dropped:0 overruns:0 carrier:0
Kollisionen:0 Sendewarteschlangenlänge:0 RX bytes:0 (0.0 b) TX bytes:0 (0.0 b)
peth0 Protokoll:Ethernet Hardware Adresse 00:0E:0C:43:AB:3D inet6 Adresse: fe80::20e:cff:fe43:ab3d/64 Gültigkeitsbereich:Verbindung 
          UP BROADCAST RUNNING MULTICAST  MTU:1500  Metric:1
          RX packets:16544 errors:0 dropped:0 overruns:0 frame:0
          TX packets:1800 errors:0 dropped:0 overruns:0 carrier:0
Kollisionen:0 Sendewarteschlangenlänge:1000 RX bytes:2460253 (2.3 MiB) TX bytes:208166 (203.2 KiB) 
          Interrupt:17


So there's no xenbr0 up and brctl shows this:


server:~# brctl show
bridge name     bridge id               STP enabled     interfaces
eth0            8000.000e0c43ab3d       no              peth0


'ip link show' looks like this:
1: lo: <LOOPBACK,UP,10000> mtu 16436 qdisc noqueue link/loopback 00:00:00:00:00:00 brd 00:00:00:00:00:00 
2: peth0: <BROADCAST,MULTICAST,UP,10000> mtu 1500 qdisc pfifo_fast qlen 1000
    link/ether 00:0e:0c:43:ab:3d brd ff:ff:ff:ff:ff:ff
3: eth1: <BROADCAST,MULTICAST> mtu 1500 qdisc noop qlen 1000
    link/ether 00:0e:0c:43:ab:3e brd ff:ff:ff:ff:ff:ff
4: eth8: <BROADCAST,MULTICAST> mtu 1500 qdisc noop qlen 1000
    link/ether 00:0e:0c:c5:14:94 brd ff:ff:ff:ff:ff:ff
5: eth6: <BROADCAST,MULTICAST> mtu 1500 qdisc noop qlen 1000
    link/ether 00:0e:0c:c5:14:95 brd ff:ff:ff:ff:ff:ff
6: eth7: <BROADCAST,MULTICAST> mtu 1500 qdisc noop qlen 1000
    link/ether 00:0e:0c:c5:14:96 brd ff:ff:ff:ff:ff:ff
7: eth9: <BROADCAST,MULTICAST> mtu 1500 qdisc noop qlen 1000
    link/ether 00:0e:0c:c5:14:97 brd ff:ff:ff:ff:ff:ff
8: eth2: <BROADCAST,MULTICAST> mtu 1500 qdisc noop qlen 1000
    link/ether 00:0e:0c:c5:1a:f4 brd ff:ff:ff:ff:ff:ff
9: eth3: <BROADCAST,MULTICAST> mtu 1500 qdisc noop qlen 1000
    link/ether 00:0e:0c:c5:1a:f5 brd ff:ff:ff:ff:ff:ff
10: eth4: <BROADCAST,MULTICAST> mtu 1500 qdisc noop qlen 1000
    link/ether 00:0e:0c:c5:1a:f6 brd ff:ff:ff:ff:ff:ff
11: eth5: <BROADCAST,MULTICAST> mtu 1500 qdisc noop qlen 1000
    link/ether 00:0e:0c:c5:1a:f7 brd ff:ff:ff:ff:ff:ff
12: sit0: <NOARP> mtu 1480 qdisc noop link/sit 0.0.0.0 brd 0.0.0.0 13: vif0.0: <BROADCAST,MULTICAST> mtu 1500 qdisc noop link/ether fe:ff:ff:ff:ff:ff brd ff:ff:ff:ff:ff:ff 14: veth0: <BROADCAST,MULTICAST> mtu 1500 qdisc noop link/ether 00:00:00:00:00:00 brd ff:ff:ff:ff:ff:ff 15: vif0.1: <BROADCAST,MULTICAST> mtu 1500 qdisc noop link/ether fe:ff:ff:ff:ff:ff brd ff:ff:ff:ff:ff:ff 16: veth1: <BROADCAST,MULTICAST> mtu 1500 qdisc noop link/ether 00:00:00:00:00:00 brd ff:ff:ff:ff:ff:ff 17: vif0.2: <BROADCAST,MULTICAST> mtu 1500 qdisc noop link/ether fe:ff:ff:ff:ff:ff brd ff:ff:ff:ff:ff:ff 18: veth2: <BROADCAST,MULTICAST> mtu 1500 qdisc noop link/ether 00:00:00:00:00:00 brd ff:ff:ff:ff:ff:ff 19: vif0.3: <BROADCAST,MULTICAST> mtu 1500 qdisc noop link/ether fe:ff:ff:ff:ff:ff brd ff:ff:ff:ff:ff:ff 20: veth3: <BROADCAST,MULTICAST> mtu 1500 qdisc noop link/ether 00:00:00:00:00:00 brd ff:ff:ff:ff:ff:ff 21: eth0: <BROADCAST,MULTICAST,UP,10000> mtu 1500 qdisc noqueue link/ether 00:0e:0c:43:ab:3d brd ff:ff:ff:ff:ff:ff 

/var/log/xend.log shows this:


[2008-09-09 15:34:42 3755] INFO (__init__:1072) Xend Daemon started
[2008-09-09 15:34:42 3755] INFO (__init__:1072) Xend changeset: unavailable.
[2008-09-09 15:34:42 3755] INFO (__init__:1072) Xend version: Unknown.
[2008-09-09 15:34:42 3755] INFO (__init__:1072) Not recreating missing 
unmanaged network xenbr1
[2008-09-09 15:34:42 3755] INFO (__init__:1072) Not recreating missing 
unmanaged network xenbr8
[2008-09-09 15:34:42 3755] INFO (__init__:1072) Not recreating missing 
unmanaged network xenbr9
[2008-09-09 15:34:42 3755] INFO (__init__:1072) Not recreating missing 
unmanaged network xenbr3
[2008-09-09 15:34:42 3755] INFO (__init__:1072) Not recreating missing 
unmanaged network xenbr5
[2008-09-09 15:34:42 3755] INFO (__init__:1072) Not recreating missing 
unmanaged network xenbr2
[2008-09-09 15:34:42 3755] INFO (__init__:1072) Not recreating missing 
unmanaged network xenbr6
[2008-09-09 15:34:42 3755] INFO (__init__:1072) Not recreating missing 
unmanaged network tmpbridge
[2008-09-09 15:34:42 3755] INFO (__init__:1072) Not recreating missing 
unmanaged network xenbr0
[2008-09-09 15:34:42 3755] INFO (__init__:1072) Not recreating missing 
unmanaged network xenbr4
[2008-09-09 15:34:42 3755] INFO (__init__:1072) Not recreating missing 
unmanaged network xenbr7
[2008-09-09 15:34:43 3755] DEBUG (__init__:1072) 
XendDomainInfo.recreate({'max_vcpu_id': 7, 'cpu_time': 31253704308L, 'ssidref': 
1278071716, '
hvm': 0, 'shutdown_reason': 0, 'dying': 0, 'online_vcpus': 8, 'domid': 0, 'paused': 0, 'crashed': 0, 'running': 1, 'maxmem_kb': 17179869180L, 'shutdown': 0, 'mem_kb': 16382760L, 'handle': [0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0], 'blocked': 0, 'name': 'Domain-0'}) 
[2008-09-09 15:34:43 3755] INFO (__init__:1072) Recreating domain 0, UUID 
00000000-0000-0000-0000-000000000000. at /local/domain/0
[2008-09-09 15:34:43 3755] DEBUG (__init__:1072) Storing VM details: 
{'on_xend_stop': 'ignore', 'shadow_memory': '0', 'uuid': '00000000-0000-0
000-0000-000000000000', 'on_reboot': 'restart', 'image': '(linux (kernel ))', 
'on_poweroff': 'destroy', 'on_xend_start': 'ignore', 'on_crash':
 'restart', 'xend/restart_count': '0', 'vcpus': '8', 'vcpu_avail': '255', 
'name': 'Domain-0'}
[2008-09-09 15:34:43 3755] DEBUG (__init__:1072) Storing domain details: 
{'cpu/3/availability': 'online', 'name': 'Domain-0', 'console/limit':
 '1048576', 'memory/target': '16382760', 'cpu/2/availability': 'online', 'vm': 
'/vm/00000000-0000-0000-0000-000000000000', 'domid': '0', 'secu
rity_label': '', 'cpu/7/availability': 'online', 'cpu/0/availability': 
'online', 'cpu/1/availability': 'online', 'cpu/5/availability': 'online
', 'control/platform-feature-multiprocessor-suspend': '1', 
'cpu/6/availability': 'online', 'console/type': 'xenconsoled', 
'cpu/4/availability'
: 'online'}
[2008-09-09 15:34:43 3755] DEBUG (__init__:1072) Adding Domain: 0
[2008-09-09 15:34:43 3755] DEBUG (__init__:1072) number of vcpus to use is 0
[2008-09-09 15:34:43 3755] DEBUG (__init__:1072) 
XendDomainInfo.handleShutdownWatch
[2008-09-09 15:34:43 3755] WARNING (__init__:1072) API call: VBD.set_device not 
found
[2008-09-09 15:34:43 3755] WARNING (__init__:1072) API call: VBD.set_type not 
found
[2008-09-09 15:34:43 3755] WARNING (__init__:1072) API call: 
session.get_all_records not found
[2008-09-09 15:34:43 3755] WARNING (__init__:1072) API call: event.get_record 
not found
[2008-09-09 15:34:43 3755] WARNING (__init__:1072) API call: event.get_all not 
found
[2008-09-09 15:34:43 3755] WARNING (__init__:1072) API call: 
VM.get_auto_power_on not found
[2008-09-09 15:34:43 3755] WARNING (__init__:1072) API call: 
VM.set_auto_power_on not found
[2008-09-09 15:34:43 3755] WARNING (__init__:1072) API call: VIF.get_network 
not found
[2008-09-09 15:34:43 3755] WARNING (__init__:1072) API call: VIF.set_device not 
found
[2008-09-09 15:34:43 3755] WARNING (__init__:1072) API call: VIF.set_MAC not 
found
[2008-09-09 15:34:43 3755] WARNING (__init__:1072) API call: VIF.set_MTU not 
found
[2008-09-09 15:34:43 3755] WARNING (__init__:1072) API call: debug.get_all not 
found
[2008-09-09 15:34:43 3755] INFO (__init__:1072) Opening Unix domain socket 
XML-RPC server on /var/run/xend/xen-api.sock; authentication has be
en disabled for this server.
[2008-09-09 15:34:43 3755] INFO (__init__:1072) Opening Unix domain socket 
XML-RPC server on /var/run/xend/xmlrpc.sock.


When I try the network-bridge script by hand I get this message:


server:/etc/xen/scripts# ./network-bridge netdev=eth3 bridge=xenbr3 start
ifdown: interface eth3 not configured
Nothing to flush.
Waiting for peth3 to negotiate link.
Ignoring unknown interface xenbr3=xenbr3.


I have this  problem also with Xen on a Gentoo box. Here Xen only works up to 
version 3.1.3.
All other versions don't work, because of the missing bridges.

I searched for this problem but it seems that I'm the only one with this a 
problem.
Can someone give me any hint, or perhaps there's someone with a similar problem?
If any further informations are needed I can provide them.

Many thanks
Thomas



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