IBM Support

IT08626: BACKUP STGPOOL MEMORY LEAK IN AFALLOCBITFILEEX WITH LARGE PRIMARY DEDUP POOL TO DESTINATION COLLOCATED POOL

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APAR status

  • Closed as program error.

Error description

  • Backup STGpool memory leak in AfAllocBitfileEx.  The memory leak
    occurs when the primary pool is a Dedup pool and it is being
    backed up to a Collocated Copy Pool.  Even if the Backup STG has
    completed successfully, the memory is not freed from the Tivoli
    Storage Manager Server.  Every subsequent Backup STG process for
    this pool will add to the memory usage in the AfAllocBitfileEx
    thread.  The Tivoli Storage Manager Server needs to be restarted
    to free the used memory.
    
    Tivoli Storage Manager Versions Affected: V6.3 V7.1
    
    L2 Diagnostics:
    Example of the Show Alloc data:
    
    aftxn.c line   981: 18856301 entries for    7089969176 bytes
    (AfAllocBitfileEx) thread 6671(AfBackupPoolThread parent=6668)
    
    Initial Impact: High
    Additional Keywords: system paging out of memory DBMEMPERCENT
    collocation Data deduplication
    

Local fix

  • Restart the Tivoli Storage Manager server to free the memory.
    

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 levels 6.3.6 and 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

    IT08626

  • 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

    2015-04-29

  • Closed date

    2015-06-08

  • Last modified date

    2015-06-08

  • 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

  • R63A PSY

       UP

  • R63H PSY

       UP

  • R63L PSY

       UP

  • R63S PSY

       UP

  • R63W PSY

       UP

  • 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 #: IT08626

Modified date: 08 June 2015