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IZ78569: FSCNTL WITH FSCNTL_EXTENTINFO/USDEXTS SHOWS INCORRECT BEHAVIOR APPLIES TO AIX 6100-05

A fix is available

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APAR status

  • Closed as program error.

Error description

  • fscntl called with FSCNTL_EXTENTINFO and FSCNTL_USDEXTS
    may show incorrect behavior when used against big
    filesystem.
    
    Typical symptom is fscntl used with above options, can
    come up with duplicate block address. As a result
    applications depending on the return values may loop
    forever.
    

Local fix

  • N/A
    

Problem summary

  • j2_extentInfo does not return all the allocated
    blocks in very large filesystems.
    

Problem conclusion

  • Keep track of the control page levels before reading
    subsequent dmap pages.
    

Temporary fix

Comments

APAR Information

  • APAR number

    IZ78569

  • Reported component name

    AIX 610 STD EDI

  • Reported component ID

    5765G6200

  • Reported release

    610

  • Status

    CLOSED PER

  • PE

    NoPE

  • HIPER

    NoHIPER

  • Submitted date

    2010-07-02

  • Closed date

    2010-07-02

  • Last modified date

    2013-03-28

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

    IZ67455

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

Fix information

  • Fixed component name

    AIX 610 STD EDI

  • Fixed component ID

    5765G6200

Applicable component levels

  • R610 PSY U834695

       UP10/08/20 I 1000

PTF to Fileset Mapping

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Document Information

Modified date:
28 March 2013