Kdump over NFS does not complete on systems using Chelsio cards enabled by the cxgb4 driver

Solution Verified - Updated -

Environment

Red Hat Enterprise Linux 6 or 7
Chelsio T4 or T5 card using the cxgb4 driver

Issue

Kdump over NFS does not complete on systems using Chelsio cards enabled by the cxgb4 driver

Resolution

This issue is fixed in Chelsio T4/T5 firmware version 1.16.26.0 or later. The updated firmware is being considered for inclusion in future releases of Red Hat Enterprise Linux, and it is possible to manually update the firmware before it becomes available as part of the operating system. Follow these steps to update the firmware if you believe you are experiencing this problem:

  1. Confirm that you are using an older version of the firmware with the command 'ethtool -i '. The output for the parameter "firmware-version" must show something older than 1.16.26.0.
  2. Obtain the updated firmware from Chelsio's download center. It's contained within their Linux Unified Wire driver package.
  3. Place the firmware .bin file under /lib/firmware/
  4. Run the command 'ethtool -f ' to update the firmware
  5. Reboot the machine

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