We found what the problem is... There is an onboard mthca DDR interface and a mlx4 QDR add-in card. When the system comes up, it finds the onboard HCA first and was making that IB0. The ifconfig output shows that interface ib0 is up even though the actual IB state is down/polling. We disabled the mthca driver from loading and now the mlx4 port 1 interface becomes ib0 as we wanted.
I'm not sure what the best way to handle this configuration would be (assuming we actually needed to use all 3 ports / 2 HCAs). We could specify the HWADDR in the ifcfg-ib[0,1,2] files, assuming that it works with the 20-byte IB addresses. Or, I seem to remember adding alias lines in /etc/modprobe.conf years ago to sort out a similar situation with ethernet ports. Do you guys have other/better suggestions? What is the purpose of the "alias ib0 ib_ipoib" line in etc/modprobe.conf? Is it required by something in OFED? Are you supposed to have one for any additional interfaces (ib1, ib2)? Since the OFED install did not create entries for the other interfaces, I'm guessing it is not strictly required? -Chuck -- To unsubscribe from this list: send the line "unsubscribe linux-rdma" in the body of a message to majord...@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html
