[Users] vdsm netinfo fails errors with InfiniBand present

[Trey Dockendorf]

I am seeing lots of entries like the one below on my ovirt nodes that
have InfiniBand (ib0).

Thread-13::ERROR::2014-02-06 19:03:52,906::netinfo::301::root::(speed)
cannot read ib0 speed
Traceback (most recent call last):
  File "/usr/lib64/python2.6/site-packages/vdsm/netinfo.py", line 297, in speed
    s = int(speedFile.read())
IOError: [Errno 22] Invalid argument

I'm seeing related entries in system's syslog.

Feb  6 18:58:31 vm02 vdsm root ERROR cannot read ib0
speed#012Traceback (most recent call last):#012  File
"/usr/lib64/python2.6/site-packages/vdsm/netinfo.py", line 297, in
speed#012    s = int(speedFile.read())#012IOError: [Errno 22] Invalid
argument

The file being read exists but I can't "cat" it.

# cat /sys/class/net/ib0/speed
cat: /sys/class/net/ib0/speed: Invalid argument

Attached is full vdsm log.

Host is CentOS 6.5.  I just upgraded host from 3.3.2 to 3.3.3 and the
errors are the same.

Thanks
- Trey
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