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

IBM Tivoli Storage Manager V6.3 Fix Pack 5 (6.3.5.000) Server Downloads

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 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