IT32320: MQ appliance M2001 alert LED in the front panel show incorrect status.

APAR status

• Closed as program error.

Error description

• When an appliance user performed power source maintenance work,
  the MQ appliance model M2001 (machine type 8436-55X) alert LED
  in the front panel was illuminated. "show ipmi-sel" showed the
  PSU1 or PSU2 had "Output Failure" , but related PSU's LED was
  green, which means that PSU was still in the normal state and
  working good.
  
  The recreate procedure:
  
  - Target unit: MQ Appliance M2001
  - Make sure two PSUs are in the good state.
  - Make sure the Alert LED is OFF.
  - Make sure IPMI-SEL does not have any "output failure" events
  for PSUs.
  - Steps:
    - Remove the power cable for PSU-1, wait 2 seconds, and
  connect the power cable.
    - Check the PSU LED, it should be solid GREEN.
    - Check the Alert LED, it should be ON.
    - Login DP CLI, issues "show sensors-other", the result is:
  
  idg(config)# show sensors-other
  
   Name                          Value Status
   ----------------------------- ----- -------
   Intrusion Detected            false ok
   Power Supply 1 AC Lost        false ok
   Power Supply 1 Output Failure true  failure
   Power Supply 2 AC Lost        false ok
   Power Supply 2 Output Failure false ok
  
  
    - Issue "show ipmi-sel",  you should get
  "powerSupplyFailureDetected" event for PSU-1:
   111   2020/03/13 12:21:34      0x0002      systemEvent
  0x0000                       timestampClockSync         none
          asserted
   112   2020/03/23 06:46:12      0x0002      powerSupply
  0x002E        PSU_1-Status   powerSupplyFailureDetected none
          asserted
   113   90 seconds uptime        0x0002      systemEvent
  0x0000                       timestampClockSync         none
          asserted
  

Local fix

Problem summary

• ****************************************************************
  USERS AFFECTED:
  All users of MQ appliance M2001 models
  
  
  Platforms affected:
  MultiPlatform
  
  ****************************************************************
  PROBLEM DESCRIPTION:
  MQ appliance firmware needs to be updated to upgrade the M2001
  BMC version to v1.32 to fix the following problems.
  
  - When removing the power cable and reconnecting it within 6
  seconds,
  it cause the VIN_UV_FAUL bit is ON.
  - This VIN_UV_FAUL bit means the outside power source has
  problem, not
  a problem in the PSU itself, which means the PSU itself is OK.
  - The reason for this bit ON is due to PSU has a capacitor, if
  removing and connecting the power cable within 6 seconds, there
  are
  still some  power in the capacitor, so that this bit is ON,
  instead of AC Lost event.
  - If removing the connecting the power cable > 6 seconds, due
    to the capacitor
  released all power, the AC Lost event occurs.
  - This new BMC v1.32 is to ignore the VIN_UV_FAUL monitoring,
  since it only  means the outside power source's problem, not the
  PSU.
  

Problem conclusion

• MQ appliance has been updated to upgrade the M2001 BMC version
  v1.32.
  
  ---------------------------------------------------------------
  The fix is targeted for delivery in the following PTFs:
  
  Version    Maintenance Level
  v9.1 CD    TBC.
  v9.1 LTS   9.1.0.6
  
  The latest available maintenance can be obtained from
  'WebSphere MQ Recommended Fixes'
  http://www-1.ibm.com/support/docview.wss?rs=171&uid=swg27006037
  
  If the maintenance level is not yet available information on
  its planned availability can be found in 'WebSphere MQ
  Planned Maintenance Release Dates'
  http://www-1.ibm.com/support/docview.wss?rs=171&uid=swg27006309
  ---------------------------------------------------------------
  

Temporary fix

Comments

APAR Information

• APAR is sysrouted FROM one or more of the following:

• APAR is sysrouted TO one or more of the following:

Fix information

• Fixed component name

  MQ APPLIANCE M2

• Fixed component ID

  5737H4700

Applicable component levels