OA47210: HEALTH CHECK SINGLE POINT OF FAILURE ON SINGLE I/O DRAWER

Obtain the fix for this APAR.

APAR status

• Closed as program error.

Error description

• Single Point of Failure (SPOF) raised on zEC12 or later machines
  configured with a single I/O Drawer showing reason:
  "10xxxxxxxxxxxxxxxxxxxxxx"
  
  The "10" bit indicates the I/O Cage is a single point of
  failure.  This check should not apply to a single I/O Drawer.
  
  This message effects messages IOSPF108I, IOSPF154I, IOSPF208I,
  IOSPF254I, IOSPF308I, and IOSPF354I
  

Local fix

• Ignore expected exception when single I/O drawer used
  

Problem summary

• ****************************************************************
  * USERS AFFECTED: Users at HBB7780 and above using the         *
  *                 IOS SPOF Health Check function or the        *
  *                 IOSSPOF macro service.                       *
  ****************************************************************
  * PROBLEM DESCRIPTION: IOS Single Point of Failure service     *
  *                      reports single points of failure        *
  *                      which can not be corrected.             *
  ****************************************************************
  * RECOMMENDATION:                                              *
  ****************************************************************
  The SPOF check function starts out with a completely clear slate
  of possible issues to check but there are potential issues being
  checked and can be flagged which can not be corrected by the
  customer.
  .
  One example is the I/O drawer in a smaller machine that only
  supports one drawer.
  

Problem conclusion

• Update the SPOF processing to ONLY check for components that are
  actionable by the customer and interesting to the processing.
  .
  The components that are being reported on are:
      processor book, fanout card, I/O domain and channel card.
  .
  Also, update the SPOF messages that have the component failure
  flags to include decoding of the bit string that is reported
  when there is a SPOF issue.
  .
  For example message IOSPF254I would be updated as follows:
  IOSPF254I Volumes vvvvv1 (sddd1) and vvvvv2 (sddd2) have all
            CHPIDs share a single point of failure,
            component indicators =
            xxxxxxxxxxxxxxxxxxxxxxxx (model dependent).
  !         Components: <components>
  

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:

  UA82020 UA82021 UA82022 UA82023 UA82024 UA82025

Modules/Macros

• IOSDSPOF IOSHCSPM IOSIOSEN IOSIOSJP IOSVSPFR IOSVSPOF
  

Fix information

• Fixed component name

  IOS

• Fixed component ID

  5752SC1C3

Applicable component levels

• R7AJ PSY UA82023

     UP16/07/06 P F607

• R7A0 PSY UA82020

     UP16/07/06 P F607

• R78J PSY UA82024

     UP16/07/06 P F607

• R780 PSY UA82021

     UP16/07/06 P F607

• R79J PSY UA82025

     UP16/07/06 P F607

• R790 PSY UA82022

     UP16/07/06 P F607

Fix is available

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