On Tue, Apr 18, 2006 at 02:29:05 +1000, John O'Hagan wrote:
> On Mon, 17 Apr 2006 11:59 pm, Florian Kulzer wrote:
>
> [...]
>
> >
> > You can either use mapping in /etc/network/interfaces or write udev
> > rules to control the assignment of the names. A nice summary was given a
> > while ago by Seeker5528:
> > http://lists.debian.org/debian-user/2006/01/msg00075.html
> >
> > I always had trouble when I tried to assign ethX names with the udev
> > rules, so I use a slightly modified approach:
> > http://lists.debian.org/debian-user/2006/01/msg03434.html
> >
>
> [...]
>
> I've been trying to solve this minor annoyance on an up-to date testing
> system
> ever since udev. I think I have followed the approaches you refer to above;
> but I was using eth* names and found that about 10% of the time, interface
> names were scrambled, as you mention in your linked post.
>
> I just tried using this /etc/udev/rules.d/10_local_rules (a link
> to /etc/udev/local_rules):
>
> KERNEL=="eth*", SYSFS{address}=="00:40:ca:c0:d9:a6",
> NAME="ethernet"
> KERNEL=="eth*", SYSFS{address}=="00:0c:f1:15:c6:e3",
> NAME="wireless"
> KERNEL=="eth*", SUBSYSTEM=="ieee1394", NAME="firewire"
>
> however, it does not succeed in renaming the interfaces as I expected.
>
> Is there something I'm missing?
Your rules look OK to me. I checked my laptop again and mine are
equivalent, but I have now linked them as "025_local_rules". I would not
expect that to make any difference and I don't remember why I changed
it.
So let's compare a few more things. When I remove my additional rules
and reboot the laptop, I find the following situation:
$ ls -l /sys/class/net/
total 0
drwxr-xr-x 3 root root 0 2006-04-17 19:59 eth0
drwxr-xr-x 4 root root 0 2006-04-17 19:59 eth1
drwxr-xr-x 3 root root 0 2006-04-17 19:59 eth2
drwxr-xr-x 3 root root 0 2006-04-17 21:59 lo
This should be comparable to what you see as long as your rules are not
working. I then relinked my rules and ran udevtest on the three devices:
$ udevtest /class/net/eth0
main: looking at device '/class/net/eth0' from subsystem 'net'
wait_for_sysfs: file '/sys/class/net/eth0/address' appeared after 0 loops
udev_rules_get_name: rule applied, 'eth0' becomes 'lan'
rename_net_if: changing net interface name from 'eth0' to 'lan'
udev_add_device: renamed netif to 'lan'
main: run: 'socket:/org/freedesktop/hal/udev_event'
main: run: 'socket:/org/kernel/udev/monitor'
main: run: '/bin/sh -c '/lib/udev/net.agent &''
main: run: 'udev_run_hotplugd net'
main: run: 'udev_run_devd net'
$ udevtest /class/net/eth1
main: looking at device '/class/net/eth1' from subsystem 'net'
wait_for_sysfs: file '/sys/class/net/eth1/address' appeared after 0 loops
udev_rules_get_name: rule applied, 'eth1' becomes 'wlan'
rename_net_if: changing net interface name from 'eth1' to 'wlan'
udev_add_device: renamed netif to 'wlan'
main: run: 'socket:/org/freedesktop/hal/udev_event'
main: run: 'socket:/org/kernel/udev/monitor'
main: run: '/bin/sh -c '/lib/udev/net.agent &''
main: run: 'udev_run_hotplugd net'
main: run: 'udev_run_devd net'
$ udevtest /class/net/eth2
main: looking at device '/class/net/eth2' from subsystem 'net'
wait_for_sysfs: file '/sys/class/net/eth2/address' appeared after 0 loops
udev_rules_get_name: rule applied, 'eth2' becomes 'modem'
rename_net_if: changing net interface name from 'eth2' to 'modem'
udev_add_device: renamed netif to 'modem'
main: run: 'socket:/org/freedesktop/hal/udev_event'
main: run: 'socket:/org/kernel/udev/monitor'
main: run: '/bin/sh -c '/lib/udev/net.agent &''
main: run: 'udev_run_hotplugd net'
main: run: 'udev_run_devd net'
What do you see when you run udevtest? You can run it as a normal user
and it will not change anything in the system, even if it claims
otherwise.
Afterwards I ran as root
# udevsynthesize
# invoke-rc.d udev restart
I did not get any error messages, but the names of the devices were not
changed. (Network devices are somewhat special in udev.) After I
rebooted once more I found:
$ ls -l /sys/class/net/
total 0
drwxr-xr-x 3 root root 0 2006-04-17 20:24 lan
drwxr-xr-x 3 root root 0 2006-04-17 22:24 lo
drwxr-xr-x 3 root root 0 2006-04-17 20:24 modem
drwxr-xr-x 4 root root 0 2006-04-17 20:24 wlan
If you try the same maybe you'll notice something which will tell us
were things go wrong.
--
Regards,
Florian
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