Re: Trouble with udevtrigger/udevsettle

[Logan Rathbone <logan.rathbone@utoronto.ca>]

Bryan Kadzban wrote:
> Oops, didn't send this to the list last time:
>
> Bryan Kadzban wrote:
>   
>> Logan Rathbone wrote:
>>
>>     
>>> Thus I have to wait quite a while (about a minute or so) for
>>> udevsettle to complete and have my bootup continue.  Any ideas what
>>> this could be about?
>>>       
>> Hmm...  Just guessing here, but:
>>
>>
>>     
>>> I never really have a network cable plugged into the via-rhine, but I
>>> don't see why that would make a difference.
>>>       
>> Your distro may have a rule set up to try to ifup the interface when it
>> sees an add event for it.  If this ifup is trying to use DHCP, it *may*
>> take a long time to fail when it can't find a DHCP server.  I seem to
>> remember a 30-second timeout with dhcpcd in the past, which it waits for
>> twice; that would match up with the one-minute timing you're seeing.
>>
>> I would suspect that the DHCP client should to fail immediately if it
>> doesn't detect a link, but I don't know for sure whether all of them do.
>>
>> You might try blacklisting via-rhine in modprobe.conf.  That way you
>> should never get an add event for eth0, and if the long delay is due to
>> some rule that triggers from that, it shouldn't happen.
>>     
Yes, you are right!  The udev SRPM I built from came from Mandriva, who 
set up udev rules to automatically configure and start hotplugged 
ethernet devices.  I guess they don't use udevtrigger for coldplugging, 
as that would probably produce the same problem I was having.  I suppose 
that I could reconfigure the rules to fork the dhclient process, but 
then I'd possibly risk a race condition with some later services (not 
likely, but possible).  But I guess I'm doing that anyway since my 
'network' initscript uses ifplugd to bring the interfaces up.

But I digress!  Maybe in the future I'll toy around with it and have 
udev rules handle the configuration and starting/stopping of my ethernet 
devices, but I certainly don't need that functionality atm.

Thanks for your help, guys.

--Logan

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