IC79901: CLIENT BACKUPS WITH CLIENT-SIDE DEDUPLICATION ENABLED CAN FAIL WITH ANS7899E (RC254)

APAR status

• Closed as program error.

Error description

• Tivoli Storage Manager Client backups with client-side
  deduplication enabled can fail with ANS7899E (RC254) if the
  Tivoli Storage Manager server is highly active.
  This error usually occurs when a Tivoli Storage Manager Server
  expiration or similar process is either in the process of
  removing a deduplicated extent or has an extent locked during
  the client backup.
  
  This issue does not occur when using server-side deduplication.
  
  
  Customer/L2 Diagnostics:
  In the client error log following error can be seen:
  ANS7899E (RC254)  The client referenced a deduplicated extent
  that does not exist on the TSM server
  
  
  Tivoli Storage Manager Versions Affected:
  Tivoli Storage Manager Versions 6.2
  
  
  Initial Impact:
  Medium
  
  
  Additional Keywords:
  TSM zz62 dedup deref dereference del deletion
  

Local fix

• Disable client-side deduplication
  

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 6.2.4 and 6.3.1.             *
  *                 Note that this is subject to change at       *
  *                 the discretion of IBM.                       *
  ****************************************************************
  PROBLEM SUMMARY:
  *
  
  AFFECTED PLATFORMS:
  AIX, HP-UX, Solaris, Linux, and Windows.
  

Problem conclusion

• The described problem has been resolved.
  

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

• R62A PSY

     UP

• R62H PSY

     UP

• R62L PSY

     UP

• R62S PSY

     UP

• R62W PSY

     UP

• R63A PSY

     UP

• R63H PSY

     UP

• R63L PSY

     UP

• R63S PSY

     UP

• R63W PSY

     UP