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Controller Powered On but Not Functional

Applies To

 

Product(s): T540, T6xx, T8xx

Product Version(s): Not Applicable

Bug(s): N/A

Introduction

 

This document describes the steps used to troubleshoot a controller (controller A or B) that is not discovering the disk array containing the operating system.

Symptoms

The system is not redundant. The message displayed states: "Controller A or B is powered on but not functional".

This issue signals a hardware problem with the controller connection to the backplane.

Resolution

  1. Connect to the Kernel-based Virtual Machine (KVM).
  2. View the output. Determine if the output contains the following error message:
    Cannot verify boot integrity, error 2.  
    This error indicates a hardware problem with the controller connection to the backplane.

    BASH error: Cannot verify boot integrity, error 2
    Initializing nvram
    Boot watchdog timeout set
    Checking BMS/IPMI
    Enabling HBA port
    Total slots: 16
    Installed slots:
    Checking disk firmware
    Diskdump configure failed, error 2
    Crashdump configuration failed, skipping
    Setting up HA parameters
    Checking boot configuration
    Cannot verify boot integrity, error 2
    Please check the /tmp/bootlog.txt log file for more details
    Waiting for USB keyboard driver to settle
    Bash: cannot set terminal process group (-1): Inappropriate ioctl for dev
    ​Bash-4.0

     
  3. Remove the faulty controller.
  4. Perform a visual inspection of the back of the controller to see if there is a bent connector pin or other misaligned hardware.
  5. Make adjustments to the equipment as needed.
  6. Reseat the controller.
  7. Monitor the KVM to confirm the controller boots successfully.

A successful boot returns you to the login prompt.

 

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Posted 13:00, 12 May 2017
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