IC65133: A TIVOLI STORAGE MANAGER DEDUPLICATION PROCESS MAY LOOP AND USE 100% CPU.

APAR status

• Closed as program error.

Error description

• Problem Description:
  A Tivoli Storage Manager server enabled for storage pool
  deduplication may have one of its "Identify Process" loop and
  consume 100% CPU.
  
  Customer/L2 Diagnostics:
  A Tivoli Storage Manager server DEDUP trace will show the loop
  occurring on one or more bitfile. The series of messages that
  repeat are as follows :
  
  <timestamp> [nn][bfdedup.c][6950][BfDedupVolumeThread]:
   Processing bitfile xxx, segment 0, size 2200.
  <timestamp> [nn][bfdedup.c][1637][BfAnalyzeBitfile]:
   Analyzing bfId xxx
  <timestamp> [nn][bfdedup.c][1762][BfAnalyzeBitfile]:
   Bitfile xxx in pool Y was stored by a dedupable node(2)
  <timestamp> [nn][bfdedup.c][1823][BfAnalyzeBitfile]:
   Bitfile xxx is not an aggregate
  <timestamp> [nn][bfdedup.c][2410][BuildObjectListFromExisting]:
   Entering for super bitfile xxx
  <timestamp> [nn][bfdedup.c][2419][BuildObjectListFromExisting]:
   Error 1 from BfResolveSuperBitfile for bitfile xxx
  <timestamp> [nn][bfdedup.c][1853][BfAnalyzeBitfile]:
   Error 1 from BfGetObjectListForAggr for bitfile xxx
  <timestamp> [nn][bfdedup.c][2023][BfAnalyzeBitfile]:
   Exiting for bitfile xxx, rc: 1, numSkipped: 0
  <timestamp> [nn][bfdedup.c][6996][BfDedupVolumeThread]:
   BfAnalyzeBitfile returned rc 1, alreadyAnalyzed True, for
   bitfile xxx in pool POOLNAME.
  
  The loop is caused by the "Error 1 from BfResolveSuperBitfile"
  entry.
  
  TSM Versions Affected:
  TSM Servers V6.1 on all platforms.
  
  Additional Keywords:
  zz61 dedup performance
  

Local fix

Problem summary

• ****************************************************************
  * USERS AFFECTED: All Tivoli Storage Manager server users of   *
  *                 data deduplication.                          *
  ****************************************************************
  * PROBLEM DESCRIPTION: See error description.                  *
  ****************************************************************
  * RECOMMENDATION: Apply fixing level when available. This      *
  *                 problem is currently projected to be fixed   *
  *                 in levels 6.1.3.1 and 6.1.4. Note that this  *
  *                 is subject to change at the discretion of    *
  *                 IBM.                                         *
  ****************************************************************
  *
  

Problem conclusion

• This problem was fixed.
  
  Affected platforms:  AIX, HP-UX, Sun 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

• R61A PSY

     UP

• R61H PSY

     UP

• R61L PSY

     UP

• R61S PSY

     UP

• R61W PSY

     UP