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IC75668: CONCURRENT PROBES OF MULTIPLE XIV SUBSYSTEMS RESULT IN INCORRECT LUN TO HOST-PORT MAPPING DATA.

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APAR status

  • Closed as program error.

Error description

  • DETAIL OF PROBLEM:
    When TPC runs multiple XIV probes at the same time, a code
    defect makes it possible for LUN to host-port mapping data to be
    stored incorrectly.  This defect presents itself to the user
    when numerous ALR4353W warnings are logged in the TPC alert
    panel at times when no XIV configuration changes are being made.
    A sample of such a warning is as follows:  ALR4353W: One or
    multiple Data Paths from Host 1000000xxxxxxxxx to Volume
    *XIV-xxxxxx(ID:xx) on Subsystem XIV-xxxx-xxxxxxx-IBM are not
    longer available
    The fix for this APAR combined with the fix for APAR IC74840
    will resolve the incorrect probe behavior and stop the alerts
    from happening when no configuration changes are being made on
    the XIV.
    RECREATE STEPS:
    Run a probe of multiple XIV subsystems at the same time and
    observe ALR4353W messages in the TPC alert log GUI panel.
    ________________________________________________________________
    DB2 Version used for Server:    N/A
    The defect is against component:   5648HWN01
    Server/Manager build/release (TPC):   4.2.1.152
    Agent build/release (TPC):    N/A
    Server/Manager (OS):     N/A
    Agent (OS):       N/A
    ________________________________________________________________
    Problem as described by customer:   Erroneous ALR4353W data path
    change warnings
    Initial customer impact (low/med/high):  med
    

Local fix

Problem summary

  • ****************************************************************
    * USERS AFFECTED: TPC 4.2.0 and 4.2.1 users probing XIV        *
    ****************************************************************
    * PROBLEM DESCRIPTION: See ERROR DESCRIPTION                   *
    ****************************************************************
    * RECOMMENDATION:                                              *
    ****************************************************************
    -
    

Problem conclusion

  • A code change has been made to avoid the incorrect ALR4353W
    warnings.  The fix for this APAR is targeted for the following
    maintenance packages:
    
    | 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

    IC75668

  • Reported component name

    MULTIPLE DEVICE

  • Reported component ID

    5648HWN01

  • Reported release

    420

  • Status

    CLOSED PER

  • PE

    NoPE

  • HIPER

    NoHIPER

  • Special Attention

    NoSpecatt

  • Submitted date

    2011-04-07

  • Closed date

    2011-04-12

  • Last modified date

    2011-04-12

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

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

Modules/Macros

  • XIV
    

Fix information

  • Fixed component name

    MULTIPLE DEVICE

  • Fixed component ID

    5648HWN01

Applicable component levels

  • R420 PSY

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Document Information

Modified date:
18 September 2021