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IT12864: IDENTIFY DUPLICATES FAILS TO SCAN NEW INGEST IF IDENTIFYPROCESS SET TO 0

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APAR status

  • Closed as program error.

Error description

  • Tivoli Storage Manager server IDENTIFY DUPLICATES process(es)
    will not scan data ingested after the processes were started if
    the IDENTIFYPROCESS parameter on the storage pool definition is
    set to 0.  This issue becomes especially apparent if IDENTIFY
    DUPLICATE processing is running with an infinite duration.
    
    Administrators affected by this issue are likely to notice that
    their IDENTIFY DUPLICATES process(es) initially scanned data,
    but then went IDLE and remain in that state indefinitely,
    despite new data being ingested into the storage pool.
    
    If the IDENTIFY DUPLICATES process(es) are not analyzing newly
    ingested data, then the server-side deduplication ratio will
    likely be lower than expected.
    
    Customer/L2 Diagnostics:
    None.
    
    Initial Impact:
    Medium
    
    Tivoli Storage Manager Versions Affected:
    All supported Tivoli Storage Manager server users of file-
    pool based server data deduplication.
    
    Additional Keywords:
    TSM DEDUP DEDUPE DEDUPLICATION RATIO IDENTIFY ID PERCENT
    IDENTIFYPROCESS STG STGPOOL STGP SPECTRUM PROTECT DUPLICATE
    

Local fix

  • To mitigate this issue, the IDENTIFYPROCESS parameter on the
    storage pool definition should be updated to match the
    NUMPROCESS parameter value used on the IDENTIFY DUPLICATES
    command.  Once this update is made, recycle all existing
    IDENTIFY DUPLICATES processes (cancel the existing processes,
    and restart them).
    

Problem summary

  • ****************************************************************
    * USERS AFFECTED:                                              *
    * All Tivoli Storage Manager server users.                     *
    ****************************************************************
    * PROBLEM DESCRIPTION:                                         *
    * See error description.                                       *
    ****************************************************************
    * RECOMMENDATION:                                              *
    * Apply fixing level when available. This problem is currently *
    * projected to be fixed in level 7.1.7. 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

    IT12864

  • Reported component name

    TSM SERVER

  • Reported component ID

    5698ISMSV

  • Reported release

    71A

  • Status

    CLOSED PER

  • PE

    NoPE

  • HIPER

    NoHIPER

  • Special Attention

    NoSpecatt / Xsystem

  • Submitted date

    2015-12-18

  • Closed date

    2016-06-24

  • Last modified date

    2016-06-24

  • 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: 7.1.3

Reference #: IT12864

Modified date: 24 June 2016