[lvs-users] LVS-DR and scp

To: lvs-users@xxxxxxxxxxxxxxxxxxxxxx
Subject: [lvs-users] LVS-DR and scp
Cc: scooter@xxxxxxxxxxxx
From: Kaizaad Bilimorya <kaizaad@xxxxxxxxxxx>
Date: Wed, 4 May 2011 16:38:26 -0400 (EDT)

Just thought I would post an update to this since we saw the same symptoms 
(including the frags from the tcpdump) and our solution might be helpful 
to others.

Turning off generic-receive-offload fixed the problem for us.

# ethtool -k eth1
generic-receive-offload: on

# ethtool -K eth1 gro off
generic-receive-offload: off

The network card on the director:
Ethernet controller: Intel Corporation 82576 Gigabit Network Connection (rev 01)

OS and kernel:
CentOS release 5.5 (Final)
Linux 2.6.18-194.32.1.el5 #1 SMP Wed Jan 5 17:52:25 EST 2011 x86_64 x86_64 
x86_64 GNU/Linux


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