WARNING: mcxnex0: CQE ERR Mellanox Connectx Connection Drops (Doc ID 2234268.1)

Last updated on FEBRUARY 22, 2017

Applies to:

Solaris x64/x86 Operating System - Version 11.1 and later
Information in this document applies to any platform.
Dell PowerEdge R730xd server running Solaris 11.3 serving as a storage appliance.
Using Infiniband HCA's from Oracle

Kernel version: SunOS 5.11 11.3
Entire Version : 0.5.11-0.175.3.4.0.5.0

Mellanox Technologies MT26428 [ConnectX VPI PCIe 2.0 5GT/s - IB QDR /10GigE]
CardVendor 0x15b3 card 0x0021 (Mellanox Technologies, Card unknown)

The initiators in this case are Linux, but the customer does not see this issue with their version of a zfs appliance running Solaris 11.2.

Symptoms

Customer reports "Mellanox Connectx connection drops"
The following error message is seen in /var/adm/messages on the Dell server running Solaris which is serving as storage device:

 

Cause

Sign In with your My Oracle Support account

Don't have a My Oracle Support account? Click to get started

My Oracle Support provides customers with access to over a
Million Knowledge Articles and hundreds of Community platforms