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PH48385: GDPS Metro does not trigger HyperSwap for IOS1002A message when RS2 primary

A fix is available

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APAR status

  • Closed as program error.

Error description

  • When running in a Metro environment with multiple subchannel
    sets and RS2 primary, loss of connectivity to a primary device
    (indicated by an IOS1002A message) is ignored by GDPS instead
    of triggering a HyperSwap.
    
    Additional symptom:
    
    When running in a Metro environment with multiple subchannel
    sets and RS2 primary, loss of connectivity to a secondary device
    (indicated by an IOS002A message) in RS1 incorrectly triggered
    a Freeze event.
    

Local fix

Problem summary

  • ****************************************************************
    * USERS AFFECTED: GDPS Metro users of multiple subchannel sets *
    *                                                              *
    *                 keywords: GDPSMETRO/K                        *
    ****************************************************************
    * PROBLEM DESCRIPTION: GDPS Metro does not trigger HyperSwap   *
    *                      for IOS1002A message when RS2 primary   *
    ****************************************************************
    When running in a Metro environment with multiple subchannel
    sets and RS2 primary, loss of connectivity to a primary device
    (indicated by an IOS1002A message) is ignored by GDPS instead
    of triggering a HyperSwap.
    
    When running in a Metro environment with multiple subchannel
    sets and RS2 primary, loss of connectivity to a secondary device
    (indicated by an IOS002A message) in RS1 incorrectly triggered
    a Freeze event.
    
    Similar scenarios exist for RL2 and RL3 in an MM3SITE topology.
    

Problem conclusion

  • This PTF corrects the reported problems.
    
    DOCUMENTATION CHANGES
    
    GDPS Metro Installation and Customization Guide (ZG24-6755) is
    updated as follows:
    
    - The MSGFLDxx sample now includes IOS1002A. See doc hold for
      details.
    
    - Conditions validated by GDPS_CHECK_CONSOLE are updated with
      references to IOS1002A
    
    - Multiple existing references to IOS002A now also talk about
      IOS1002A.
    
    
    ACTIONS REQUIRED
    
    This PTF updates the VPC8C005 load module for the GDPS
    HealthCheck GDPS_CHECK_CONSOLE. For information on the actions
    required to implement this change, see the Technote at the
    following URL:
    http://www.ibm.com/support/docview.wss?uid=swg21959594
    
    Prior to installing this PTF, update Message Flood Automation
    parameters (MSGFLDxx) on all systems in your GDPS sysplex, to
    include specific message IOS1002A as described in the DOC hold.
    
    Prior to installing this PTF, ensure that message IOS1002A is
    eligible for NetView automation in all domains in your GDPS
    sysplex. See the guidance for MAT messages in the SGDPSAMP
    member for your installed offering (GEOM4MT or GEOM4HM).
    

Temporary fix

Comments

APAR Information

  • APAR number

    PH48385

  • Reported component name

    GDPS

  • Reported component ID

    694235B00

  • Reported release

    430

  • Status

    CLOSED PER

  • PE

    NoPE

  • HIPER

    YesHIPER

  • Special Attention

    NoSpecatt / Xsystem

  • Submitted date

    2022-08-02

  • Closed date

    2022-12-01

  • Last modified date

    2023-01-03

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

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

    UI83530 UI83531 UI83532

Modules/Macros

  • GEOM4HM  GEOM4MT  GEOMSGGP VPC8C005 VPCEMMTA VPCEMSGH
    

Fix information

  • Fixed component name

    GDPS

  • Fixed component ID

    694235B00

Applicable component levels

  • R430 PSY UI83532

       UP22/12/02 P F212 ¢

  • R440 PSY UI83531

       UP22/12/02 P F212 ¢

  • R450 PSY UI83530

       UP22/12/02 P F212 ¢

Fix is available

  • Select the PTF appropriate for your component level. You will be required to sign in. Distribution on physical media is not available in all countries.

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Document Information

Modified date:
05 January 2023