IT07785: DATA MOVEMENT OPERATIONS FROM DEDUPLICATED STGPOOL MAY FAIL WITH ANR9999D_4216717499 UNABLE TO RECONSTRUCT AGGREGATE

APAR status

• Closed as program error.

Error description

• During data movement from deduplicated storage pool, where
  objects need to be reconstructed, operation may fail with
  following error:
  
  ANR9999D_4216717499 CopyBatch(afcputil.c:6018)
                            Thread<739>: Unable to reconstruct
  aggregate 629339039 in
                            pool 9 since reconstruction has been
  disabled. (SESSION:
                            20, PROCESS: 11
  
  Server validates the number of chunks within an aggregate and if
  it exceeds 12 million chunks, server will not allow
  reconstruction and the operation will fail.
  
  To verify if this limit has been reached for that aggregate,
  perform following query:
  
  db2 "select * from BF_AGGREGATE_ATTRIBUTES where SRVID=0 and
  SUPERBFID=<aggregate>"
  
  For example:
  
  $ db2 "select * from BF_AGGREGATE_ATTRIBUTES where SRVID=0 and
  SUPERBFID=629339039"
  
  SRVID       SUPERBFID            ASIZE                LSIZE
  NUMFILES    RSIZE                NUMCHUNKS   FLAGS
  ----------- -------------------- --------------------
  -------------------- ----------- --------------------
  ----------- ------
            0            629339039        2197723182764
  2197723182764    12332003        2197723182764    12332002
  1
  
    1 record(s) selected.
  
  
  If the result contains more that 12 million chunks in the row
  NUMCHUNKS then this limit has been reached.
  
  TSM Versions Affected:
  Tivoli Storage Manager server on all platforms.
  
  Initial Impact:
  Low
  
  Additional Keywords:
  CopyBatch afcputil.c reconstruct aggregate reconstruction
  disabled
  

Local fix

Problem summary

• ****************************************************************
  * USERS AFFECTED:                                              *
  * All Tivoli Storage Manager server users running              *
  * deduplication.                                               *
  ****************************************************************
  * PROBLEM DESCRIPTION:                                         *
  * See error description.                                       *
  ****************************************************************
  * RECOMMENDATION:                                              *
  * Apply fixing level when available. This problem is currently *
  * projected to be fixed in level 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

• R71A PSY

     UP

• R71H PSY

     UP

• R71L PSY

     UP

• R71S PSY

     UP

• R71W PSY

     UP