coldplug is blocking udev

kamracik · Posted: Tue Apr 04, 2006 6:00 pm Post subject:

Okey i dont have problem with boot but with that udev dont start everything that it should :/ i mean i dont have speaker on my hp nx6110 :/ it quite annoying cant heard when something happend in ither window :/

pmn · n00b Joined: 25 Mar 2005 Posts: 16 Location: Helsinki

Okay, when I said don't remove hotplug I meant it... Now things are different, I managed boot without hotplug. The problem was back then that my network-card didn't function without hotplug. I just put line 'forcedeth' to /etc/modules.autoload/kernel-2.6 and my system works w/o hotplug installed.

I could ask why new udev doesn't load my forcedeth module by itself like hotplug did?

klemi · Posted: Thu Apr 06, 2006 3:57 am Post subject:

I have a question:
In which runlevel must I installed hotplug?.

I dont`t update udev at this time - but I will do it.

PaulBredbury · Veteran Joined: 14 Jul 2005 Posts: 5931

lmcogs · Guru Joined: 03 Apr 2005 Posts: 340

Hi all

Had the same message with emerge -uD world. I unmerged coldplug but kept hotplug and updated world. The system reboots but I have lost eth0 and can't access the net. Is there some issue here and can anyone help please, big time. It was working fine before. I believe eth0 may need hotplug to work or does it need coldplug, or is there a new udev rule that handles bringing up eth0?

This is my /etc/conf.d/net file

# This blank configuration will automatically use DHCP for any net.*
# scripts in /etc/init.d. To create a more complete configuration,
# please review /etc/conf.d/net.example and save your configuration
# in /etc/conf.d/net (this file :]!).
iface_eth0=("dhcp")
dhcpcd_eth0=("-R")

Appreciate any help

lmcogs

lmcogs · Guru Joined: 03 Apr 2005 Posts: 340

Hi all

Well I seemed to have got it going, with a bit of luck. I followed these links

http://forums.gentoo.org/viewtopic-t-375493-start-0-postdays-0-postorder-asc-highlight-init+fails+renamed+interfaces.html
and
http://www.reactivated.net/writing_udev_rules.html#example-iface

It seems you have to write a udev rule etc to get it going.

All the best

lmcogs

Oh by the way my /etc/conf.d/net file is now
config_lan=("dhcp")
dhcpcd_eth0="-R"

l33tmmx · Posted: Fri Apr 07, 2006 12:33 pm Post subject:

An excerpt from udev changelog:

gemini91 · Posted: Fri Apr 07, 2006 7:59 pm Post subject:

I'm running a 2.6.16 kernel and when I un-emerged coldplug and installed udev-089
my wireless stopped working, eth0 and eth1 got mixed up, and I could not connect. Backed
off udev and reinstalled coldplug, and things work again. I'll wait for a new udev before
trying again.

Cthulhu666 · Apprentice Joined: 02 Apr 2004 Posts: 181

After unmerging coldplug and upgrading udev (to 089-r2), all available modules were loaded unconditionally.

Since that's not the way I play, I downgraded udev (087) and I'm back in business. I haven't even reemerged coldplug, go figure.
_________________
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Got 4 Gentoo boxes (2 desktops, 1 laptop and a server/MythTV HTPC).

gemini91 · Posted: Tue Apr 11, 2006 10:22 am Post subject:

My wireless problem with udev-089-r2 is resolved. I re-emerged
it to see if it may have changed. I rebooted, and my wireless connected
using eth0 the way it always worked. I re-booted again and it failed,
wireless was set up for eth1. I have both a wireless and a hard wired connection.
I hardly ever use the hard wired one. I don't care which one (eth0 or eth1)
connects to my wireless, just so one does.
I resolved the problem by modifying /etc/conf.d/wireless
FROM:
# /etc/conf.d/wireless:
# Global wireless config file for net.* rc-scripts
essid_eth0="any"
key_miloulan="e9e61d5f99"
TO:
# /etc/conf.d/wireless:
# Global wireless config file for net.* rc-scripts
#essid_eth0="any"
key_miloulan="e9e61d5f99"
Now sometimes it connects using eth0, sometimes eth1 but it connects.

EDIT: I also removed net.eth0 from rc-update, it is not needed anylonger. udev trys to start both interfaces.

LostControl · Posted: Tue Apr 11, 2006 1:08 pm Post subject:

gemini91 · Posted: Tue Apr 11, 2006 1:42 pm Post subject:

LostControl, my laptop is also never connected to a wired network,
but my machine does not wait on that adapter coming up. I'll check
and see what dmesg says when my wireless connects to eth1.

gemini91 · Posted: Tue Apr 11, 2006 1:58 pm Post subject:

Well nothing in dmesg, however on the console when machine is
coming up

Starting eth0
Starting netplug on eth0
Backgrounding

I have netplug installed and that seems to be what is taking care
of it.

zxy · Posted: Tue Apr 11, 2006 3:49 pm Post subject:

@LostControl You can aslo use ifplugd. It works good for me. And yes, waiting for half a minute for a nonexisting network connection is just annoying.

LostControl · Posted: Tue Apr 11, 2006 5:03 pm Post subject:

Thank you

I installed netplug and now the daemon waits on the background until a cable is plugged :-)

A+
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http://www.fail2ban.org

_savage · Guru Joined: 06 Jun 2004 Posts: 304 Location: Redmond, WA

Back from vacation and I ought to tend to my totally boned Gentoo box. The problem was that after a complete system update I had this failure during boot:

Cthulhu666 · Apprentice Joined: 02 Apr 2004 Posts: 181

_savage · Guru Joined: 06 Jun 2004 Posts: 304 Location: Redmond, WA

Thanks Cthulhu666, I downloaded it.

Problem is that my TiBook is now four years old and it seems to have difficulties reading my boot CD. So that means I can't boot from my CD to copy the file back onto the Gentoo partition. OS-X doesn't have xfs drivers either, so I can't mount my Gentoo partition. I am locked out of my Gentoo, unless I find another way to boot the box. Does network boot work? Or from a USB/FireWire device?

Whoever submitted that "fix" a few weeks ago ought to be beaten; people shouldn't be allowed to check in without testing! Argh! :evil:

_________________
Jens Troeger
http://savage.light-speed.de/

thepustule · Posted: Fri May 12, 2006 4:52 pm Post subject: Holy Cow!

Might I ask - is there any page anywhere that explains the reasoning behind combining the coldplug functionality into udev?

Udev is supposed to manage the /dev tree - not load modules!

I have 5 network adapters in my system. Various versions of Coldplug/hotplug would load them in all kinds of different orders, which would repeatedly hose my iptables rules and a bunch of other interface-specific services.

So I specified the network driver load order in /etc/modules/autoload.d and put coldplug in default runlevel. So my order-important modules load nicely before the auto stuff happens.

But now with this merge, udev will auto-load the pile before the autoload.d is processed, and I'm back to mayhem!

Why, oh why oh WHY!

Even the udev website doesn't mention anything about loading modules - is this a gentoo-only thing?

Maybe there's a good reason for this, but it would be nice to read it - all I see so far is pain and anquish, and a nice easy workaround totally killed.

thepustule · Posted: Fri May 12, 2006 5:06 pm Post subject: For More Info

For more information about my above gripe, please read the following exerpt from the udev FAQ

Cthulhu666 · Apprentice Joined: 02 Apr 2004 Posts: 181

The coldplug behaviour in udev can now be controlled with a couple of options in /etc/conf.d/rc

thepustule · Posted: Mon May 15, 2006 7:24 am Post subject:

Would it be possible to use the udev rules to specify which one is eth0, eth1, etc?

It would be quite the task to change all firewall rules, and all config files for services that bind to specific network interfaces, etc.

Cthulhu666 · Apprentice Joined: 02 Apr 2004 Posts: 181

Cthulhu666 · Apprentice Joined: 02 Apr 2004 Posts: 181

Here's an example from my laptop, just to give you an idea about how to write rules: