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IC99934: CLIENT SESSIONS HUNG IN RUN STATE DUE TO SESSION IN MEDIAW. SERVER STOPS ALLOWING NEW CLIENT AND ADMIN SESSIONS

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APAR status

  • Closed as program error.

Error description

  • Client session is hung in MediaW state.  New client and admin
    sessions hang in the run state and in time the server can run
    out of sessions preventing new client/admin sessions.
    
    Tivoli Storage Manager Versions Affected: All V63 and V7 Servers
    
    Customer/L2 Diagnostics:
    Query Session will show growing number of client sessions in the
    run state:
     Sess       Comm.    Sess     Wait    Sess
     Number     Method   State    Time    Type
     -------    ------   ------  ------   -------
     1,336,400  Tcp/Ip   SendW    0 S     Node
     1,337,000  Tcp/Ip   MediaW 4.7 M     Node
     1,337,301  Tcp/Ip   Run      0 S     Node
     1,337,302  Tcp/Ip   Run      0 S     Node
     1,337,303  Tcp/Ip   Run      0 S     Node
     1,337,304  Tcp/Ip   Run      0 S     Node
     1,337,305  Tcp/Ip   Run      0 S     Node
     1,337,306  Tcp/Ip   Run      0 S     Admin
     ...
    
    Procstack/pstack will show waiting on GetWritableVol
    ---------- tid# 1311041 (pthread ID:  10721) ----------
    0x09000000004b9ab0  _cond_wait_global(??, ??, ??) + 0x4f0
    0x09000000004ba638  _cond_wait(??, ??, ??) + 0x38
    0x09000000004bb328  pthread_cond_wait(??, ??) + 0x1a8
    0x00000001000079f0  pkWaitConditionTracked(??, ??, ??, ??, ??) +
    0xb0
    0x00000001002d8fc0  AcquireLatchSpecific(??, ??, ??, ??) + 0x320
    0x00000001003bb684  pvrIsFileDevClassId(??) + 0xa4
    0x0000000100825cd8  GetWritableVol(??, ??, ??, ??, ??, ??, ??,
    ??) + 0x6f8  <--------
    0x0000000100829ce0  AsAcquireAnyWritableVol(??, ??, ??, ??, ??,
    ??) + 0xac0
    0x00000001004ce200  AllocNewVol(??, ??, ??, ??) + 0x140
    0x00000001004cb730  AsAllocSeg(??, ??, ??) + 0x810
    0x000000010048a3a0  SinkStore(??, ??, ??) + 0x2180
    0x0000000100488068  SsSWThread(??) + 0x248
    0x000000010000c260  StartThread(??) + 0xa0
    
    Initial Impact: High
    Additional Keywords: Hang hung Login failed session client
    backups fail
    

Local fix

  • Restart the Tivoli Storage Manager server
    

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 6.3.5 and 7.1.1.       *
    *                 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

    IC99934

  • Reported component name

    TSM SERVER

  • Reported component ID

    5698ISMSV

  • Reported release

    63A

  • Status

    CLOSED PER

  • PE

    NoPE

  • HIPER

    NoHIPER

  • Special Attention

    NoSpecatt

  • Submitted date

    2014-03-07

  • Closed date

    2014-03-26

  • Last modified date

    2014-03-26

  • 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

  • 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: 63A

Reference #: IC99934

Modified date: 26 March 2014