ORBIT-USER: Where's the WiFi device on sb2?

Einar Vollset einar at cs.cornell.edu
Tue Jul 25 17:24:38 EDT 2006


Ah. Magic.. :-) Thanks!

Out of interest, if I load the driver like this and then save the  
image, will the driver be there when
I re-image the nodes? If so, and I then ran an experiment, would the  
nodehandler (rudely IMHO)
unload it again?

Cheers,

Einar

On Jul 25, 2006, at 5:15 PM, Sachin Ganu wrote:

> Einar,
>
> You will need to load the driver using "modprobe ath_pci" prior to
> bringing the interface ath0 up. The nodehandler does this
> automatically. Also, at the end of the experiment, the nodehandler
> unloads the driver.
>
> At the end of your slot, I will try to test "nodehandler -t -k " and
> see if I can recreate the problem.
>
> On 7/25/06, Einar Vollset <einar at cs.cornell.edu> wrote:
>>
>>
>>
>> Hi,
>>
>> I've been trying to wrestle nodehandler to run my code and was making
>> progress when I noticed that
>> my experiments were a little too successful; my code was picking the
>> 1Gbps wired network device
>> instead of the wireless one :-)
>>
>> However, I appear unable to actually locate the device interface for
>> the wireless card; I simply run
>> `nodehandler -t -k` - which should create me a device ath0, but when
>> I ssh into the node after the
>> simulation I only see the two wired interfaces:
>>
>> node1-1:~# iwconfig
>> eth0      no wireless extensions.
>>
>> eth1      no wireless extensions.
>>
>> lo        no wireless extensions.
>>
>> It also doesn't like my suggestion to manually ifconfig the ath0  
>> device:
>>
>> node1-1:~# ifconfig ath0 up
>> ath0: ERROR while getting interface flags: No such device
>> node1-1:~#
>>
>>
>> Any thoughts?
>>
>> Cheers,
>>
>> Einar
>>




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