Xen users - Oct 2006 - May be a Bug in network-brigde script (Xen V 3.0.2.2-86)

Hi all,
First, sorry for my poor frenglish ....
I think I''ve found a bug in the network-brigde script.
I''m trying to make working my Xen server (SL 4.3) with 2 Ethernet  
cards. Each card is connected to a different network ( A and B) .  
There is 2 DomU one must be connected on the A network,
the other to the B network....
As read in a lot of Xen forums (and on the Wiki also) I''ve made my  
network-script like
this:

[root@Xen-1 domi]# cat /etc/xen/scripts/my-network-script
#!/bin/sh
dir=$(dirname "$0")
"$dir/network-bridge" "$@" vifnum=0
"$dir/network-bridge" "$@" vifnum=1

and my /etc/xen/xend-config.sxp modify like this

#(network-script network-bridge)
(network-script my-network-script)

But, on my Dell PowerEdge 1850, each time xend start, my network crash...

After investigation I found that the line :
netdev=${netdev:-$(ip route list default scope global| awk ''{ print $NF
}'')}

in the /etc/xen/scripts/network-bridge script
is a bad idea .. so, after commented it ... all goes right...

May this help some of you ...
Bye



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You are probably using an old version of network-bridge.

http://lxr.xensource.com/lxr/source/tools/examples/network-bridge#L62

 62
<http://lxr.xensource.com/lxr/source/tools/examples/network-bridge#L62>
vifnum=${vifnum:-$(ip route list | awk ''/^default / { print $NF
}'' |
sed ''s/^[^0-9]*//'')}
 63
<http://lxr.xensource.com/lxr/source/tools/examples/network-bridge#L63>
vifnum=${vifnum:-0}
 64
<http://lxr.xensource.com/lxr/source/tools/examples/network-bridge#L64>
bridge=${bridge:-xenbr${vifnum}}
 65
<http://lxr.xensource.com/lxr/source/tools/examples/network-bridge#L65>
netdev=${netdev:-eth${vifnum}}
 <http://lxr.xensource.com/lxr/source/tools/examples/network-bridge#L66>




On 10/7/06, CARON DOminique <xen.20.dcaron@spamgourmet.com>
wrote:
>
> After investigation I found that the line :
> netdev=${netdev:-$(ip route list default scope global| awk ''{
print $NF
> }'')}
>
> in the /etc/xen/scripts/network-bridge script
> is a bad idea .. so, after commented it ... all goes right...
>

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Nicholas Lee said:
> You are probably using an old version of network-bridge.
>
> http://lxr.xensource.com/lxr/source/tools/examples/network-bridge#L62
Yes , more than probable but this is the release furnished by :
http://bits.xensource.com/Xen/latest/xen-3.0-x86_32-rhel4.1.src.tar

Thank''s for your answer.


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