IBM Support

IJ54023: AFM OUTBAND PREFETCH HANGS

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APAR status

  • Closed as program error.

Error description

  • AFM outband prefetch causes deadlock due to incorrect handling
    of async messages while creating the files/dirs in the cache.
    

Local fix

Problem summary

  • AFM outband prefetch causes deadlock due to incorrect handling
    of async messages while creating the files/dirs in the cache.
    

Problem conclusion

  • This problem is fixed in 5.1.9.9
    To see all Spectrum Scale APARs and their respective
    Fix solutions refer to page: 
    https://public.dhe.ibm.com/storage/spectrumscale/spectrum_scale
    _apars.html
    
    Benefits of the solution:
    Fixed the code to handle file create messages correctly, not
    queuing to the gateway node
    
    Work Around:
    None
    
    Problem trigger:
    AFM outband prefetch
    
    Symptom:
    Deadlock
    
    Platforms affected:
    Linux Only
    
    Functional Area affected:
    AFM
    
    Customer Impact:
    High Importance
    

Temporary fix

Comments

APAR Information

  • APAR number

    IJ54023

  • Reported component name

    SPEC SCALE STD

  • Reported component ID

    5737F33AP

  • Reported release

    519

  • Status

    CLOSED PER

  • PE

    NoPE

  • HIPER

    NoHIPER

  • Special Attention

    NoSpecatt / Xsystem

  • Submitted date

    2025-03-21

  • Closed date

    2025-04-01

  • Last modified date

    2025-04-01

  • 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

    SPEC SCALE STD

  • Fixed component ID

    5737F33AP

Applicable component levels

[{"Business Unit":{"code":"BU048","label":"IBM Software"},"Product":{"code":"STXKQY"},"Platform":[{"code":"PF025","label":"Platform Independent"}],"Version":"519","Line of Business":{"code":"LOB69","label":"Storage TPS"}}]

Document Information

Modified date:
01 April 2025