IBM Support

RHEL7: System may reboot when flashing N2215 SAS firmware - Lenovo x86 servers

Troubleshooting


Problem

When performing N2215 SAS Host Bus Adapter (HBA) firmware flashing with Data Integrity Field (DIF) enabled and a SAS hard drive installed in the system, RHEL 7 may reboot unexpectedly.

Resolving The Problem

Source

RETAIN tip: H005469

Symptom

When performing N2215 SAS Host Bus Adapter (HBA) firmware flashing with Data Integrity Field (DIF) enabled, and a HGST SAS hard drive installed in the system, RHEL 7 may reboot unexpectedly.

(where SAS = Serial Attached SCSI, HHD = Hard Disk Drive, RHEL = Red Hat Enterprise Linux)

Affected configurations

The system is configured with at least one of the following:

  • Red Hat Enterprise Linux 7, any Base Install

The system is configured with one or more of the following Lenovo Options:

  • N2215 SAS/SATA Host Bus Adapter (HBA) for IBM System x, Option part number 47C8675, any model

This tip is not system specific.

Note: This does not imply that the network operating system will work under all combinations of hardware and software.

Please see the compatibility page for more information: http://www.ibm.com/systems/info/x86servers/serverproven/compat/us/

Solution

The issue has been fixed in RHEL 7 update 1.

Workaround

  1. Temporarily disable default HDD type 2 protection with the following command:

      echo 0 > /sys/block/sdb/device/scsi_disk/1:0:1:0 protection_type

    (where /dev/sdb is the HGST DIF-enabled HDD)

  2. Perform N2215 firmware flashing.

  3. Restore default HDD type 2 protection with the following command:

      echo 2 > /sys/block/sdb/device/scsi_disk/1:0:1:0/protection_type

    (where /dev/sdb is the HGST DIF-enabled HDD)



Document Location

Worldwide

Operating System

Lenovo x86 servers:Operating system independent / None

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Document Information

Modified date:
30 January 2019

UID

ibm1MIGR-5098459

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