[ofa-general] OFED interfering with Ethernet

[Jason Gunthorpe]

On Sat, Sep 19, 2009 at 11:57:01PM +0200, Sebastian Kalcher wrote:

> If I do an "openib stop" and restart iperf everything returns to normal.
> 
> The behavior is reproducible on different nodes with the same  
> constellation. I tried OFED 1.4 and 1.5beta (kernel 2.6.24). What  
> completely confuses me here is that it is the ethernet connection that  
> gets screwed up, IB isn't used at all other than that the drivers are  
> loaded.
> 
> Any hint where to continue would be greatly appreciated.

The openib init script touches all sorts of weird things, betcha one
of those is your problem... See if you can narrow it down?

You can try loading the modules yourself to confirm it is not a module
problem:
 modprobe mlx4_ib
 modprobe ib_ipoib
 mopdrobe ib_ucm
 modprobe ib_uverbs
 modprobe ib_umad

Jason