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IC74840: TPC IS THROWING MANY ALERTS OF TYPE "DATAPATH STATE CHANGE" IN THE MIDDLE OF AN ACTUAL PROBE.

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APAR status

  • Closed as program error.

Error description

  • We have a problem with alerts getting generated for DS6800 that
    is
    tagged on to the TPC.
    We have probes running for this subsystem every hour and data
    path
    missing alerts are generated every hour for the same set of
    volumes and
    same set of hosts that are tagged to DS6800.
    The DS6800 does not have any changes done on the volume or hosts
    between two consecutive probes and still the same set of alerts
    are
    generated every hour.
    

Local fix

Problem summary

  • ****************************************************************
    * USERS AFFECTED: TPC 4.2.0 and 4.2.1 users that manage        *
    *                 IBM DS8000, IBM SVC or IBM XIV or            *
    *                 also any SMI-S dependent device like         *
    *                 an IBM DS4000                                *
    ****************************************************************
    * PROBLEM DESCRIPTION: TPC throws a lot of false Alerts of     *
    *                      type "Data Path changes" for SMI-S      *
    *                      based Storage Subsystems.               *
    ****************************************************************
    * RECOMMENDATION:                                              *
    ****************************************************************
    ALR4353W: One or multiple Data Paths from Host <hostname> to
    Volume <volume name> on Subsystem <subsystem name> are no longer
    available.
    

Problem conclusion

  • A code change has been made to correct this.  The fix for this
    APAR is targeted for the following maintenance package:
    
    | fix pack | 4.2.1-TIV-TPC-FP0003 - target June 2011
    
    http://www-01.ibm.com/support/docview.wss?&uid=swg21320822
    
    The target dates for future fix packs do not represent a formal
    commitment by IBM. The dates are subject to change without
    notice.
    

Temporary fix

Comments

APAR Information

  • APAR number

    IC74840

  • Reported component name

    TPC FOR DATA

  • Reported component ID

    5608TC300

  • Reported release

    42A

  • Status

    CLOSED PER

  • PE

    NoPE

  • HIPER

    NoHIPER

  • Special Attention

    NoSpecatt

  • Submitted date

    2011-03-07

  • Closed date

    2011-03-10

  • Last modified date

    2011-03-23

  • 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

    TPC FOR DATA

  • Fixed component ID

    5608TC300

Applicable component levels

  • R42A PSY

       UP

  • R42L PSY

       UP

  • R42W PSY

       UP

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Document Information

Modified date:
23 March 2011