Re: [gentoo-user] Re: Eth0 interface not found - udev that little slut!!!!!

[Matthew Marlowe <matt@professionalsysadmin.com>]

Read the news entry - add the designated option to your grub kernel
line - reboot.   That will be the simplest solution for now.

Long term, avoid udev upgrades like the plague and test them on
non-critical systems first.  Strange that the reason I think us server
people were OK with udev being added to system in the first place was
that it said it would ensure naming of disk and net devices didn't get
mixed up (eth0 would stay eth0, eth1 would stay eth1, sdb woudl remain
sdb, etc between boots)..... and no server should need to use anything
but ethX for network names....yes, I understand the theoretical point
with regard to kernel versus user space names....in real practical use
though, with good hardware and bios, it never is an issue and most of
the linux server software to date has expected ethX for names so the
benefits versus risks of this change are not worthwhile by far, at
least on the server side.

On Sat, Apr 6, 2013 at 5:53 PM, Nick Khamis <symack@gmail.com> wrote:
> I took a closer look at /etc/udev/70-something-rules-net and
> /sys/class/net/eth0/ and all the ATTR (i.e., address, type, dev_id)
> line up fine. I did not find a "name" file in /sys/class/net/eth0 however,
> name=eth0 in etc/udev/70-something-rules-net.
>
> Ifconfig alone returns nothing. Ifconfig eth0/1 and lo returns the interface
> with no tx and rx traffic. And no ip address as set in conf.d/net.
>
> Please help guys. Server room is numbing......
>
> N.
>
> On 4/6/13, Nick Khamis <symack@gmail.com> wrote:
>> In attempted to delete 70-something rules from /etc/udev/rules.d/ and
>> it was recreated on boot with the same content. I don't think the
>> device got renamed since "ifconfig eth0" shows the correct info.
>>
>> Your help is greatly appreciated,
>>
>> N.
>>
>> On 4/6/13, Nick Khamis <symack@gmail.com> wrote:
>>> Well I looked into "/sys/class/net" as mentioned by Alan. In there I
>>> see  eth0/ eth1/ lo/ and sit0/. Not sure what too look for in (e.g.
>>> eth0/). /sys/class/net/eth0/ifindex says 3. Other files look ok, for
>>> example address (contains mac address if that has not changed...).
>>>
>>> N.
>>>
>>> On 4/6/13, Volker Armin Hemmann <volkerarmin@googlemail.com> wrote:
>>>> Am 06.04.2013 23:19, schrieb Nick Khamis:
>>>>> Our net card was also build as a module.... Volker, did you include
>>>>> your net driver for example in /etc/conf.d/modules?
>>>>
>>>> no
>>>> I removed the 70-something rules, and did pretty much nothing else.
>>>> /etc/udev/rules.d/80-net-name-slot.rules just exists and is full of
>>>> text.
>>>>
>>>> And nothing changed.
>>>>
>>>>
>>>>
>>>>
>>>
>>
>