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IT11826: SERVER CRASH WHEN NEXT GEN DEDUP PROCESSES FILES WITH STREAMS

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You can track all active APARs for this component.

APAR status

  • Closed as program error.

Error description

  • The following message can be seen prior to the server crash in
    the activity log:
    12-10-2015 21:21:45      ANR0950I Session 1093 for node NODE123
    is using inline server data deduplication. (SESSION: 1093)
    The dsmsvc.err will show a call stack similar to the following:
    Exception code:
    C0000005 (ACCESS_VIOLATION) at 00000000D8117C80
    Call stack:
    Unavailable, Unavailable
    RabinLocateFP()+244, Unavailable
    FingerPrintDataStream()+1B4, Unavailable
    ProcessInlineDedup()+1DA, Unavailable
    SdStore()+501, Unavailable
    sdCreate()+5F5, Unavailable
    CreateBitfile()+A74, Unavailable
    bfCreate()+FC5, Unavailable
    CreateBitfile()+6E8, Unavailable
    SmDoBackInsNormEnhanced()+4B3, Unavailable
    SmNodeSession()+2675, Unavailable
    HandleNodeSession()+19AB, Unavailable
    smExecuteSession()+1E28, Unavailable
    SessionThread()+407, Unavailable
    startThread()+171, Unavailable
    beginthreadex()+107, Unavailable
    endthreadex()+192, Unavailable
    BaseThreadInitThunk()+D, Unavailable
    RtlUserThreadStart()+21, Unavailable
    When the server parses data during inline dedup, an error can be
    encountered when parsing files with alternate data streams
    resulting in a server crash.  Specifically, to encounter the
    crash the file being processed must only have data present in
    the alternate data stream.  For example, Macintosh files being
    backed up on a Windows system will present alternate data
    streams that might encounter the problems if the backup is using
    inline server dedup and the file only has data in the alternate
    data stream.
    The link below is to a utility that allows one to determine if a
    file contains alternate data streams:
    https://technet.microsoft.com/en-us/sysinternals/bb897440.aspx
    In addition, alternate data streams are presented as metadata to
    the server.  Metadata is not deduplicated.
    Tivoli Storage Manager Versions Affected:
    7.1.3.x Tivoli Storage Manager/Spectrum Protect server on all
    platforms
    Initial Impact: High
    Additional Keywords: TSM container storage pool
    

Local fix

  • Redirect backups to a non inline dedup storage pool.
    

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 7.1.4. Note that this is      *
    * subject to change at the discretion of IBM.                  *
    ****************************************************************
    

Problem conclusion

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

Temporary fix

Comments

APAR Information

  • APAR number

    IT11826

  • Reported component name

    TSM SERVER

  • Reported component ID

    5698ISMSV

  • Reported release

    71W

  • Status

    CLOSED PER

  • PE

    NoPE

  • HIPER

    NoHIPER

  • Special Attention

    NoSpecatt

  • Submitted date

    2015-10-16

  • Closed date

    2015-10-26

  • Last modified date

    2015-10-26

  • 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

  • R71L PSY

       UP

  • R71S PSY

       UP

  • R71W PSY

       UP



Document information

More support for: Tivoli Storage Manager

Software version: 7.1.3

Reference #: IT11826

Modified date: 26 October 2015