Running slow system response diagnostics

Running diagnostics can help you identify the causes of slow system response times.

Steps

  1. At the storage system prompt, switch to the LOADER prompt: halt
  2. Enter the following command at the LOADER prompt: boot_diags
    Note: You must run this command from the LOADER prompt for system-level diagnostics to function properly. The boot_diags command starts special drivers designed specifically for system-level diagnostics.
  3. Run diagnostics on all the devices by entering the following command: sldiag device run
  4. View the status of the test by entering the following command: sldiag device status
    Your storage system provides the following output while the tests are still running:
    There are still test(s) being processed.
    After all the tests are complete, the following response appears by default:
    *> <SLDIAG:_ALL_TESTS_COMPLETED>
  5. Identify the cause of the system sluggishness by entering the following command: sldiag device status -long -state failed
    Example
    The following example shows how the full status of the failures is displayed in a test run without the appropriate hardware:
    *> sldiag device status -long -state failed
    
    TEST START ------------------------------------------
    DEVTYPE: nvram_ib
    NAME: external  loopback test
    START DATE: Sat Jan  3 23:10:55 GMT 2009
    
    STATUS: Completed
    ib3a: could not set loopback mode, test failed
    END DATE: Sat Jan  3 23:11:04 GMT 2009
    
    LOOP: 1/1
    TEST END --------------------------------------------
    
    TEST START ------------------------------------------
    DEVTYPE: fcal
    NAME: Fcal Loopback Test
    START DATE: Sat Jan  3 23:10:56 GMT 2009
    
    STATUS: Completed
    Starting test on Fcal Adapter: 0b
    Started gathering adapter info.
    Adapter get adapter info OK 
    Adapter fc_data_link_rate: 1Gib
    Adapter name: QLogic 2532
    Adapter firmware rev: 4.5.2
    Adapter hardware rev: 2
     
    Started adapter get WWN string test.
    Adapter get WWN string OK wwn_str: 5:00a:098300:035309
     
    Started adapter interrupt test
    Adapter interrupt test OK
     
    Started adapter reset test.
    Adapter reset OK
     
    Started Adapter Get Connection State Test.
    Connection State: 5
    Loop on FC Adapter 0b is OPEN 
     
    Started adapter Retry LIP test
    Adapter Retry LIP OK
     
    ERROR: failed to init adaptor port for IOCTL call
    
    ioctl_status.class_type = 0x1
    
    ioctl_status.subclass = 0x3
    
    ioctl_status.info = 0x0
     Started INTERNAL LOOPBACK: 
    INTERNAL LOOPBACK   OK
    Error Count: 2  Run Time: 70 secs
    >>>>> ERROR, please ensure the port has a shelf or plug.
    END DATE: Sat Jan  3 23:12:07 GMT 2009
    
    LOOP: 1/1
    TEST END --------------------------------------------
    
    If the system-level diagnostics tests... Then...
    Were completed without any failures There are no hardware problems and your storage system returns to the prompt.
    1. Clear the status logs by entering the following command: sldiag device clearstatus
    2. Verify that the log is cleared by entering the following command: sldiag device status

      The following default response is displayed:

      SLDIAG: No log messages are present.
    3. Exit Maintenance mode by entering the following command: halt
    4. Enter the following command at the Loader prompt to boot the storage system: boot_ontap

    You have completed system-level diagnostics.

    Resulted in some test failures Determine the cause of the problem.
    1. Exit Maintenance mode by entering the following command: halt
    2. Perform a clean shutdown and disconnect the power supplies.
    3. Verify that you observed all the requirements for running system-level diagnostics, that cables are securely connected, and that hardware components are properly installed in the storage system.
    4. Reconnect the power supplies and power on the storage system.
    5. Repeat Steps 1 through 5 of Running slow system response diagnostics.
    Resulted in the same test failures Technical support might recommend modifying the default settings on some of the tests to help identify the problem.
    1. Modify the selection state of a specific device or type of device on your storage system by entering the following command: sldiag device modify [-dev devtype|mb|slotslotnum] [-name device] [-selection enable|disable|default|only]

      -selection enable|disable|default|only allows you to enable, disable, accept the default selection of a specified device type or named device, or only enable the specified device or named device by disabling all others first.

    2. Verify that the tests were modified by entering the following command: sldiag option show
    3. Repeat Steps 3 through 5 of Running slow system response diagnostics.
    4. After you identify and resolve the problem, reset the tests to their default states by repeating substeps 1 and 2.
    5. Repeat Steps 1 through 5 of Running slow system response diagnostics.

After you finish

If the failures persist after repeating the steps, you need to replace the hardware.