IBM Support

IT15769: AFTER UPGRADE OF B/A CLIENT, DP FOR VE TO 7.1.6. LANFREE BACKUP CAUSES B/A GUI, COMMAND LINE OR SCHEDULER TO CRASH

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APAR status

  • Closed as program error.

Error description

  • After upgrade of client and data protection for virtual
    environments to 7.1.6,lanfree client or Ve backup will
    cause client gui (dsmagent,exe), scheduler service
    (dsmagent.exe), scheduler service (dsmcsvc,exe)
    or client command line (dsmc.exe) to crash.
    
    
    You will only see this behavior when lanfree is enabled.
    
    Tivoli Storage Manager Versions Affected: 7.1.6 on all platforms
    
    Customer/L2 Diagnostics (If Applicable)
    
    Depending on how the backup is run, dsmagent.exe, dsmcsvs.exe or
    dsmc.exe will crash and all have a call stack similar to the
    following:
    
    # Child-SP          RetAddr           Call Site
    00 000000ef`411ff9a8 00007ffe`fb46bb0f 0x000000ef`41f2b080
    01 000000ef`411ff9b0 00007ffe`fb432cf0
    tsmapi64!DFccSession::sessSend+0x14f
    02 000000ef`411ffa00 00007ffe`fb42be0c
    tsmapi64!DccVsLanFreeProtocol::ExecuteProtocol+0x9e0
    03 000000ef`411ffaf0 00007ffe`fccd3fef
    tsmapi64!vsLanFreeSessionThread+0xac
    04 000000ef`411ffb40 00007ffe`fccd4196
    msvcr110!beginthreadex+0x107
    05 000000ef`411ffb70 00007fff`024215cd
    msvcr110!endthreadex+0x192
    06 000000ef`411ffba0 00007fff`04a243d1
    kernel32!BaseThreadInitThunk+0xd
    07 000000ef`411ffbd0 00000000`00000000
    ntdll!RtlUserThreadStart+0x1d
    
    and
    
      *** Stack trace for last set context - .thread/.cxr resets it
     # Child-SP          RetAddr           Call Site
    00 00000085`0586f140 00007ffa`34b50e6d
    tsmapi64!delete_PolicyObject+0x26
    01 00000085`0586f170 00007ffa`34b51b34
    tsmapi64!DccVirtualServerSession::~DccVirtualServerSession+0xcd
    02 00000085`0586f1c0 00007ffa`34b52215
    tsmapi64!DccVirtualServerSession::`scalar deleting
    destructor'+0x14
    03 00000085`0586f1f0 00007ffa`34b4be22
    tsmapi64!DccVsLanFreeProtocol::~DccVsLanFreeProtocol+0x4e5
    04 00000085`0586fad0 00007ffa`39413fef
    tsmapi64!vsLanFreeSessionThread+0xc2
    05 00000085`0586fb20 00007ffa`39414196
    msvcr110!beginthreadex+0x107
    06 00000085`0586fb50 00007ffa`3f9515cd
    msvcr110!endthreadex+0x192
    07 00000085`0586fb80 00007ffa`411643d1
    kernel32!BaseThreadInitThunk+0xd
    08 00000085`0586fbb0 00000000`00000000
    ntdll!RtlUserThreadStart+0x1d
    
    
    MDVREGR
    
    
    Initial Impact: Low|Medium|High: High
    
    Additional Keywords: scheduler dsm.exe dump vmware backup vm
    

Local fix

  • Local Fix: To prevent the crash from occurring, disable lanfree
    until fix is available
    

Problem summary

  • ****************************************************************
    * USERS AFFECTED:                                              *
    * Users of the following products:                             *
    * - Spectrum Protect backup-archive client versions 7.1.6 on   *
    * all platforms which support lanfree;                         *
    * - Spectrum Protect for Virtual Environments component Data   *
    * Protection for VMware version 7.1.6 on Linux x86 and Windows *
    * x64                                                          *
    * who enabled lanfree.                                         *
    ****************************************************************
    * PROBLEM DESCRIPTION:                                         *
    * See ERROR DESCRIPTION.                                       *
    ****************************************************************
    * RECOMMENDATION:                                              *
    * Apply fixing level when available. This problem is projected *
    * to be fixed in level 7.1.6.2 (on Linux x86 and Windows x64)  *
    * and 7.1.6.3 (on the remaining platforms). Note that this is  *
    * subject to change at the discretion of IBM.                  *
    ****************************************************************
    *
    

Problem conclusion

  • Nearly all client operations (including vm backups) might get
    core dumps with symptoms of corrupted memory if LAN-free was
    enabled.
    After the fix, the LAN-free based client operations work fine.
    

Temporary fix

  • A fix for this problem is currently targeted for Tivoli Storage
    Manager Client on Linux x86 and Windows x64 for interim fix
    package 7.1.6.2, and on the remaining platforms for interim fix
    package 7.1.6.3.
    
    Note 1: Until a Data Protection for VMware packaged fix of a
    fixing Tivoli Storage Manager Client level is available, Data
    Protection for VMware customers can install and use a fixed
    level of the the Tivoli Storage Manager Client in their
    environment.
    Note 2: The Tivoli Storage Manager (TSM) Client is a part of the
    Data Protection for VMware. In Data Protection for VMware
    environments, the TSM Client is also known as the data mover.
    Note 3: This is subject to change at the discretion of IBM.
    

Comments

APAR Information

  • APAR number

    IT15769

  • Reported component name

    TSM CLIENT

  • Reported component ID

    5698ISMCL

  • Reported release

    71W

  • Status

    CLOSED PER

  • PE

    NoPE

  • HIPER

    NoHIPER

  • Special Attention

    NoSpecatt / Xsystem

  • Submitted date

    2016-06-28

  • Closed date

    2016-07-22

  • Last modified date

    2017-05-23

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

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

Modules/Macros

  • dsmc
    

Fix information

  • Fixed component name

    TSM CLIENT

  • Fixed component ID

    5698ISMCL

Applicable component levels

  • R71A PSY

       UP

  • R71L PSY

       UP

  • R71S PSY

       UP

  • R71H PSY

       UP

  • R71W PSY

       UP

[{"Business Unit":{"code":"BU058","label":"IBM Infrastructure w\/TPS"},"Product":{"code":"SSGSG7","label":"Tivoli Storage Manager"},"Platform":[{"code":"PF025","label":"Platform Independent"}],"Version":"71W","Line of Business":{"code":"LOB26","label":"Storage"}}]

Document Information

Modified date:
10 January 2022