Re: Problems with udev > 106 and multiple network cards

[Gabriel C <nix.or.die@googlemail.com>]

Matthias Schwarzott wrote:
> On Dienstag, 10. April 2007, Gabriel C wrote:
>   
>> Hello,
>>
>> I have some problems with udev 107 and 108 with my network cards.
>>
>> This box has 3 network cards ( 2 at the moment ) a buildin sis900 , and
>> 2 RealTek cards one USB and one pcmcia.
>>
>> I use the pcmcia RealTek one as default , sis900 is not used while
>> borken and the usb one is used just sometimes for my LAN.
>>
>> I use on this box minimal initramfs ( FS drivers etc to boot ) but I get
>> the same problem without initramfs too.
>>
>>  After upgrading from udev 106 to 107 ( later to 108 ) and rebooting the
>> box my network stoped working.
>>
>> I figured the 'cards names' looks weird , random they are called now
>> ethX_rename  (
>> http://frugalware.org/~crazy/other/udev/sys_class_net.txt |
>> http://frugalware.org/~crazy/other/udev/ifconfig-a.txt )
>> as well I get for each card an long timeout  ( 5 to 15 seconds for each
>> wrong named card ) on boot because the 70-persistent-net.rules.
>>
>>     
>
>   
>> Deleting the rules before udev starts make the timout be human again  (
>> like  2 - 3 seconds ) but the rules are still wrong because I get  as
>> NAME  ethX_rename.
>>
>>     
> I suspect it is this bug: 
> http://thread.gmane.org/gmane.linux.hotplug.devel/11001
>   

Yes is the same problem.

> Look into /etc/udev/rules.d/70-persistent-net.rules, and 
> into /dev/.udev/tmp-rules--70-persistent-net.rules if there are rules that 
> set the same name for two different cards (mac addresses).
> The tmp-location is used as long as / is read-only at udev startup time.
>
>   
> Easiest is to delete both files and reboot / or edit the set names for 
> net-devices to be unique. Then the error should be gone.
> If not you found another bug.
>   

I said editing the *rules manually make them work but this is a very 
ugly workaround for this problem.

I've detelet both rules and now after rebooting the box only the 
/dev/.udev/tmp-* one is created.

The *_rename thing is gone but there is still something wrong.

eth0 is eth1 and it is the only card right now here :

$ ls -1 /sys/class/net
eth1@
lo@
ppp0@

ifconfig -a | grep eth
eth1 Link encap:Ethernet HWaddr 00:80:5A:24:8C:FA


So is the same problem but I guess the bug is different.

>> I noticed one more strange thing with the db , while in <= 106 the db
>> was like foo\@bar -> something , >106 looks here like %2fbar%2fbaz ->
>> something
>> ( http://frugalware.org/~crazy/other/udev/udev_db.txt )
>>
>>     
> This is OK, it's the new name-encoding.
>   

Ok , thx for the info.

> Matthias
>
>   


Gabriel


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