Hi Alex, > I found that the VLAN interfaces specified in /etc/network/interfaces had > not been created. This is the output when attempting to bring up a vlan > interface manually: > > $ ifup eth0.220 > /bin/sh: 1: cannot create /sys/class/net/eth0/create_child: Permission > denied > ifup: ignoring unknown interface eth0.220=eth0.220 > > The server has a Mellanox ConnectX-3 Pro card, which has two interfaces that > are configurable to run in either Infiniband or Ethernet mode. I am running > both ports in Ethernet mode, but ifupdown is treating the interfaces as > Infiniband and trying to add an Infiniband partition to the interface > instead of an Ethernet VLAN. This fails, and the expected VLAN interfaces > are never created. > > I have attached a patch which resolves the issue by only attempting to > create Infiniband partitions when an interface has type ARPHRD_INFINIBAND, > i.e. that is its current opera
you are right that these cards can run in either mode and that the pure presence of /sys/class/net/<dev>/device/infiniband might not suffice to qualify as port in IB mode. I cannot currently test with a card running in Ethernet mode, but I will ask Benjamin who eventually contributed this patch, to test your patch in our IB environment. From a first glance it looks good and your check for ARPHRD_INFINIBAND sounds plausible. The question remains if the card port configuration is reliably available at early boot. Arno Töll
