------- Comment From pt...@cn.ibm.com 2016-11-06 20:30 EDT-------
(In reply to comment #15)
> From the affected systems, can you provide:
>
> ls -ahl /sys/class/net/<device> (which should be a symlink)
> cat /sys/devices/<pci path to device>/numa_node
> [ I believe in your case, that would be:
> cat /sys//devices/pci0002:01/0002:01:00.3/numa_node
> ]
> cat /sys/class/net/<device>/device/numa_node
>

The original system which I found this bug with 16.04.1 cannot reproduce
it with 16.10 anymore. I found another system roselp3 and adding a NIC
adapter(U78C9.001.WZS02T4-P1-C8) by DLPAR. Then,

% numactl -a --cpunodebind=netdev:enP28p96s0f3 numactl --show
libnuma: Warning: Cannot read node mask for  device 
`/devices/pci001c:60/001c:60:00.3/'
<netdev:enP28p96s0f3> is invalid
... ...

% ls -ahl /sys/class/net/enP28p96s0f3
lrwxrwxrwx 1 root root 0 Nov  6 19:18 /sys/class/net/enP28p96s0f3 -> 
../../devices/pci001c:60/001c:60:00.3/net/enP28p96s0f3
% cat /sys/devices/pci001c:60/001c:60:00.3/numa_node
1
% cat /sys/class/net/enP28p96s0f3/device/numa_node
1

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https://bugs.launchpad.net/bugs/1638515

Title:
  Ubuntu 16.04.1: numactl failed when trying to specify node with
  netdev:dev

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