Re: Problems with udev > 106 and multiple network cards

[Matthias Schwarzott <zzam@gentoo.org>]

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

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 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.

Matthias

-- 
Matthias Schwarzott (zzam)

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