IC95648: "BACKUP VM" USING VMMAXPARALLEL > 1 MIGHT CRASH

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APAR status

  • Closed as program error.

Error description

  • The BACKUP VM command might crash due to a timing error when
    multiple VM guests are processed at the same time using
    vmmaxparallel > 1.
    
    The following errors will be seen :
    
    1.) In the client dsmerror.log :
    
    ANS9020E Could not establish a session with a TSM server or
             client agent.  The TSM return code is -1.
    ANS1228E Sending of object <vmname> failed
    
    2.) In the server actlog :
    
    ANE4174E (Session: xxxx, Node: DC1) Full VM backup of VMware
             Virtual Machine <vmname> failed with RC=65535
             mode=Incremental Forever - Incremental,
             target node name='DC1', data mover node name='DM1'
    
    Customer/L2 Diagnostics:
    
    The dump call stack can vary and might look like :
    
     dsmcsvc.exe!vmAPIFuncs::UnLoadTSMApi() Line 414
     dsmcsvc.exe!vmAPISendData::termDataMoverAPI() Line 557
     dsmcsvc.exe!VmBackupVMCleanup(vmBackupData_t * *
                 vmBackupDataPP, int internalRC) Line 9133
     dsmcsvc.exe!vmVddkBackupVM(vmData * vmDataP) Line 7207
     dsmcsvc.exe!vmBackupVM(vmData * vmDataP) Line 2569
     dsmcsvc.exe!tlVMSend(txnConsumerObject_t * txnConObjP,
                 txnSpec_t * txnSpecP, DccBackupController
                 * baCP) Line 1337
     dsmcsvc.exe!DccTxnConsumer::HandleQueue() Line 2940
     dsmcsvc.exe!DccTxnConsumer::Run(void * argP) Line 2625
     dsmcsvc.exe!DccTxnConsumer::DoThread(void * argP) Line 3421
     dsmcsvc.exe!startThread2(Threadstart * startInfoP) Line 1552
     dsmcsvc.exe!startThread(Threadstart * startInfoP) Line 1512
    msvcr100.dll!0000000074bf1d9f()
    msvcr100.dll!0000000074bf1e3b()
    kernel32.dll!0000000076f9652d()
       ntdll.dll!000000007768c521()
    
    Initial Impact: Medium
    
    Tivoli Storage Manager Versions Affected:
    Tivoli Storage Manager client version 6.4 on Windows and Linux
    

Local fix

  • Use vmmaxparallel=1 in the option file of the datamover node.
    If this option makes the backup session running for too long,
    consider adding multiple datamover nodes to run the backups in
    parallel.
    

Problem summary

  • ****************************************************************
    * USERS AFFECTED: Backup-archive client version 6.4 running    *
    *                 on all Microsoft Windows and Linux           *
    *                 platforms.                                   *
    ****************************************************************
    * PROBLEM DESCRIPTION: See ERROR DESCRIPTION                   *
    ****************************************************************
    * RECOMMENDATION: Apply fixing level when available. This      *
    *                 problem is currently projected to be fixed   *
    *                 in level 6.4.2. Note that until the fixing   *
    *                 level is available, this information is      *
    *                 subject to change at the discretion of IBM.  *
    ****************************************************************
    *
    

Problem conclusion

  • The problem has been fixed so that it no longer occurs.
    

Temporary fix

Comments

APAR Information

  • APAR number

    IC95648

  • Reported component name

    TSM FOR VE DP V

  • Reported component ID

    5725TVEVM

  • Reported release

    64W

  • Status

    CLOSED PER

  • PE

    NoPE

  • HIPER

    NoHIPER

  • Special Attention

    NoSpecatt

  • Submitted date

    2013-09-02

  • Closed date

    2013-09-20

  • Last modified date

    2013-09-20

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

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

Modules/Macros

  • DSMAGENT
    

Fix information

  • Fixed component name

    TSM CLIENT

  • Fixed component ID

    5698ISMCL

Applicable component levels

  • R64L PSY

       UP

  • R64W PSY

       UP



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Document information


More support for:

Tivoli Storage Manager

Software version:

64W

Reference #:

IC95648

Modified date:

2013-09-20

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