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IT07785: DATA MOVEMENT OPERATIONS FROM DEDUPLICATED STGPOOL MAY FAIL WITH ANR9999D_4216717499 UNABLE TO RECONSTRUCT AGGREGATE

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APAR status

  • Closed as program error.

Error description

  • During data movement from deduplicated storage pool, where
    objects need to be reconstructed, operation may fail with
    following error:
    
    ANR9999D_4216717499 CopyBatch(afcputil.c:6018)
                              Thread<739>: Unable to reconstruct
    aggregate 629339039 in
                              pool 9 since reconstruction has been
    disabled. (SESSION:
                              20, PROCESS: 11
    
    Server validates the number of chunks within an aggregate and if
    it exceeds 12 million chunks, server will not allow
    reconstruction and the operation will fail.
    
    To verify if this limit has been reached for that aggregate,
    perform following query:
    
    db2 "select * from BF_AGGREGATE_ATTRIBUTES where SRVID=0 and
    SUPERBFID=<aggregate>"
    
    For example:
    
    $ db2 "select * from BF_AGGREGATE_ATTRIBUTES where SRVID=0 and
    SUPERBFID=629339039"
    
    SRVID       SUPERBFID            ASIZE                LSIZE
    NUMFILES    RSIZE                NUMCHUNKS   FLAGS
    ----------- -------------------- --------------------
    -------------------- ----------- --------------------
    ----------- ------
              0            629339039        2197723182764
    2197723182764    12332003        2197723182764    12332002
    1
    
      1 record(s) selected.
    
    
    If the result contains more that 12 million chunks in the row
    NUMCHUNKS then this limit has been reached.
    
    TSM Versions Affected:
    Tivoli Storage Manager server on all platforms.
    
    Initial Impact:
    Low
    
    Additional Keywords:
    CopyBatch afcputil.c reconstruct aggregate reconstruction
    disabled
    

Local fix

Problem summary

  • ****************************************************************
    * USERS AFFECTED:                                              *
    * All Tivoli Storage Manager server users running              *
    * deduplication.                                               *
    ****************************************************************
    * PROBLEM DESCRIPTION:                                         *
    * See error description.                                       *
    ****************************************************************
    * RECOMMENDATION:                                              *
    * Apply fixing level when available. This problem is currently *
    * projected to be fixed in level 7.1.3. Note that this is      *
    * subject to change at the discretion of IBM.                  *
    ****************************************************************
    

Problem conclusion

  • This problem was fixed.
    Affected platforms:  AIX, HP-UX, Solaris, Linux, and Windows.
    

Temporary fix

Comments

APAR Information

  • APAR number

    IT07785

  • Reported component name

    TSM SERVER

  • Reported component ID

    5698ISMSV

  • Reported release

    71L

  • Status

    CLOSED PER

  • PE

    NoPE

  • HIPER

    NoHIPER

  • Special Attention

    NoSpecatt

  • Submitted date

    2015-03-20

  • Closed date

    2015-03-27

  • Last modified date

    2015-03-27

  • 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

    TSM SERVER

  • Fixed component ID

    5698ISMSV

Applicable component levels

  • R71A PSY

       UP

  • R71H PSY

       UP

  • R71L PSY

       UP

  • R71S PSY

       UP

  • R71W PSY

       UP



Document information

More support for: Tivoli Storage Manager

Software version: 71L

Reference #: IT07785

Modified date: 27 March 2015