IT17245: SNAPDIFF BACKUP NOT POSSIBLE WITH ACTUAL=<VALUE> SET IN /ETC/EXPORTS

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APAR status

• Closed as program error.

Error description

• If a NAS /etc/exports file contains a exported volume entry
  that includes the actual=<value> option, and netapp 7-mode is
  in use then SNAPDIFF backups will fail.
  For example, if /etc/exports has an entry such as:
  
  /<name of export>  -actual=<actual mount point>
  So that a 'mount' run against the client node would show
  <NAShostname>:<actual mountpoint>  points to <local mount
  point>
  And then a SNAPDIFF backup is run against that <local mount
  point> the backup will fail:
  
  # dsmc incr -snapdiff -createnewbase=yes <local mount point>
  IBM Tivoli Storage Manager
  Command Line Backup-Archive Client Interface
    Client Version 7, Release 1, Level 6.2
    Client date/time: 08/22/2016 18:43:02
  (c) Copyright by IBM Corporation and other(s) 1990, 2016. All
  Rights
  Reserved.
  
  Node Name: <NODENAME>
  Session established with server TSMSERV1: Linux/x86_64
    Server Version 7, Release 1, Level 6.0
    Server date/time: 08/22/2016 18:43:02  Last access:
  08/22/2016
  18:05:08
  
  Accessing as node: <NASnodename>
  
  Incremental by snapshot difference of volume '<local mount
  point>'
  ANS2832E Incremental by snapshot difference failed for <local
  mount point>.
  See the error log for details.
  ANS1228E Sending of object '<local mount point>' failed.
  ANS5283E The operation was unsuccessful.
  
  
  
  Tivoli Storage Manager Versions Affected:  All versions up to
  fixing level
  Customer/L2 Diagnostics:
  Dsmserv.err shows:
  
  08/22/2016 18:43:03 No volume named '<name of export>' exists
  08/22/2016 18:43:03 ANS5250E An unexpected error was
  encountered.
     TSM function name : baPerformSnapDiff
     TSM function      : failed to perform snapdiff
     TSM return code   : 653
     TSM file          : backsnap.cpp (6132)
  08/22/2016 18:43:03 ANS2832E Incremental by snapshot difference
  failed
  for <local mount point>. See the error log for details.
  08/22/2016 18:43:03 ANS1228E Sending of object '<local mount
  point' failed.
  08/22/2016 18:43:03 ANS5283E The operation was unsuccessful.
  

Local fix

Problem summary

• ****************************************************************
  * USERS AFFECTED:                                              *
  * Tivoli Storage Manager for Client version 6.3, 6.4 and 7.1   *
  * running on Linux and AIX platforms                           *
  ****************************************************************
  * PROBLEM DESCRIPTION:                                         *
  * See ERROR DESCRIPTION                                        *
  ****************************************************************
  * RECOMMENDATION:                                              *
  * A fix for this problem is currently targeted for interim fix *
  * package 7.1.6.4. Note that untill these interim fixes are    *
  * actually available, this information is subject to change at *
  * the discretion of IBM.                                       *
  ****************************************************************
  

Problem conclusion

• The snapdiff backup will work if a NAS /etc/exports file
  contains a exported volume entry that includes the
  actual=<value> option
  

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:

Modules/Macros

• dsmc     libPiHDW
  

Fix information

• Fixed component name

  TSM CLIENT

• Fixed component ID

  5698ISMCL

Applicable component levels

• R71L PSY

     UP

• R71A PSY

     UP