Issueeth0DetectedHardwareUnitHang

Symptoms

Occurrences

[root@t3service01 ~]# grep Detected /var/log/remote-archive/2012/ -R  | grep --color Hardware

Observations

it seems to me that since we've changed the network switches the t3ui* ( most of them ) report this error:
*******************
e1000e 0000:04:00.0: eth0: Detected Hardware Unit Hang:
  TDH <59>
  TDT <5a>
  next_to_use <5a>
  next_to_clean <58>
buffer_info[next_to_clean]:
  time_stamp <1feb94e36>
  next_to_watch <59>
  jiffies <1feb952e4>
  next_to_watch.status <0>
MAC Status <2080783>
PHY Status <792d>
PHY 1000BASE-T Status <7800>
PHY Extended Status <3000>
PCI Status <10>
*******************
I'm trying to understand what that means.

you can check the # of occurrences with:
[root@t3service01 ~]# grep Detected /var/log/remote-archive/2012/ -R  | grep --color Hardware

ancient day is 2012/03/14 that matches with our 1st day of network rearrangement

Solution or Workaround

Monitoring for this condition

[root@t3service01 ~]# grep Detected /var/log/remote-archive/2012/ -R  | grep --color Hardware

-- FabioMartinelli - 2012-05-02