IT05714: BFTESTBACKUPFILE SLOCK ON AGGREGATE CAN CAUSE DEADLOCK

6.3.6.000-TIV-TSMRPT-AGENT-Linux
6.3.6.000-TIV-TSMRPT-AGENT-AIX
6.3.6.000-TIV-TSMRPT-AIX
6.3.6.000-TIV-TSMRPT-AGENT-Windows
6.3.6.000-TIV-TSMRPT-Linuxx86
6.3.6.000-TIV-TSMRPT-Linuxx86_64
6.3.6.000-TIV-TSMRPT-WindowsI32
6.3.6.000-TIV-TSMRPT-WindowsX64
6.3.6.000-TIV-TSMAC-WindowsX64
6.3.6.000-TIV-TSMAC-WindowsI32
6.3.6.000-TIV-TSMAC-SolarisSPARC
6.3.6.000-TIV-TSMAC-Linuxx86
6.3.6.000-TIV-TSMAC-Linuxs390x
6.3.6.000-TIV-TSMAC-AIX
6.3.6.000-TIV-TSMALL-SolarisSPARC
6.3.6.000-TIV-TSMALL-WindowsX64
6.3.6.000-TIV-TSMSTA-WindowsI32
6.3.6.000-TIV-TSMALL-HP-UX
6.3.6.000-TIV-TSMALL-Linuxppc64
6.3.6.000-TIV-TSMALL-AIX
6.3.6.000-TIV-TSMALL-Linuxs390x
6.3.6.000-TIV-TSMALL-Linuxx86_64
IBM Tivoli Storage Manager (TSM) server V7.1.1.x interim fix downloads
IBM Tivoli Storage Manager V6.3 Fix Pack 6 (6.3.6.000) Server Downloads

APAR status

• Closed as program error.

Error description

• Backup stgpool will appear to hang with a message resembling the
  one below.
  
  ANR0379W A server database deadlock situation has been
  encountered; the lock request for the bf  object
  (sub-bitfile) id lock, 22077517258 will be denied to
  resolve the deadlock.
  
  example thread stuck waiting on lock:
  
  ---------- tid# 60096887 (pthread ID:  42211) ----------
   0x09000000005182e0  _cond_wait_global(??, ??, ??) + 0x4e0
   0x0900000000518e74  _cond_wait(??, ??, ??) + 0x34
   0x0900000000519b5c  pthread_cond_wait(??, ??) + 0x19c
   0x000000010000812c  pkWaitConditionTracked(??, ??, ??, ??, ??)
  + 0xac
   0x0000000100178fa0  tmLockTracked(??, ??, ??, ??, ??, ??, ??,
  ??) + 0xfc0
   0x000000010061ab54  BfLockAggregateTracked(??, ??, ??, ??, ??,
  ??) + 0xb4
   0x000000010060f22c  BfReconstruct(??, ??, ??, ??, ??, ??, ??,
  ??) + 0x522c
   0x000000010099d924  CopyBatch(??) + 0x1824
   0x0000000100992fe4  CopyVolume(??) + 0x444
   0x000000010099234c  AfCopyVolume(??) + 0x24c
   0x0000000100bc18d0  AfBackupPoolThread(??) + 0x150
   0x000000010000cadc  StartThread(0x0) + 0x9c
   0x09000000004f6e10  _pthread_body(??) + 0xf0
  
  Tsn=0:1653673069, Resurrected=False, InFlight=True,
  Distributed=False, Persistent=True, Addr 123019748
     Start ThreadId=10895075, Timestamp=11/06/14 09:08:12,
  Creator=afcputil.c(6321)
     Last known in use by ThreadId=10895075
     Participants=3, summaryVote=ReadOnly
     EndInFlight False, endThreadId 0, tmidx 0, processBatchCount
  0, mustAbort False.
  
  slot -> 2772:
   LockDesc: Type=46001(bf aggregate (superbitfile) id),
  NameSpace=0, SummMode=sLock, Key='22117302969'
     Holder: (bfaggrut.c:3637 Thread 10895071) Tsn=0:1633120861,
  Mode=sLock
     Waiter: (bfcreate.c:3876 Thread 10895075) Tsn=0:1653673069,
  Mode=xLock
  
  
  The problem is caused when BfTestBackupFile erroneously holds a
  lock for the
  duration of the backup stgpool process and can deadlock when a
  process attempts to
  obtain a lock to copy that same aggregate.
  

Local fix

• None.  Apply fixing level when available.
  

Problem summary

• ****************************************************************
  * USERS AFFECTED:                                              *
  * All Tivoli Storage Manager server users of the BACKUP        *
  * STGPOOL command.                                             *
  ****************************************************************
  * PROBLEM DESCRIPTION:                                         *
  * See ERROR DESCRIPTION.                                       *
  ****************************************************************
  * RECOMMENDATION:                                              *
  * Apply fixing level when available. This                      *
  * problem is currently projected to be fixed                   *
  * in levels 6.3.6, 7.1.1.200 and 7.1.3. 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