ubuntu 16.04 and intel e1000e network crash

Bug #1700394 reported by DimGR
10
This bug affects 2 people
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Fuel Contrail plugin
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Bug Description

under heavy network traffic an intel card with the e1000e module crashes with the bellow error
e1000e 0000:00:1f.6 eth0: Detected Hardware Unit Hang:
                 TDH <0>
                 TDT <3>
                 next_to_use <3>
                 next_to_clean <0>
               buffer_info[next_to_clean]:
                 time_stamp <100131280>
                 next_to_watch <0>
                 jiffies <100131a70>
                 next_to_watch.status <0>
               MAC Status <80083>
               PHY Status <796d>
               PHY 1000BASE-T Status <3800>
               PHY Extended Status <3000>
               PCI Status <10>

and this makes the cluster unusable . I can verify that this does not happen with older kernel versions in ubuntu 14.04 . Is there a fix for this ? latest e1000e from intel does not solve this problem

Revision history for this message
DimGR (dimgr) wrote :

here is a fix i came up with
ever since i did these changes , the problems went away

first create this file with that line in it

 cat /etc/modprobe.d/e1000e.conf
options e1000e IntMode=0

secondly add these lines in /etc/rc.local

ethtool -K eth0 gro off
ethtool -K eth0 gso off
ethtool -s eth0 wol d
ethtool -G eth0 rx 1024 tx 1024
ethtool -K eth0 tso off

exit 0

reboot , and the intel card will not crush any more

no longer affects: ubuntu
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