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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 number

    IT17245

  • Reported component name

    TSM CLIENT

  • Reported component ID

    5698ISMCL

  • Reported release

    71L

  • Status

    CLOSED PER

  • PE

    NoPE

  • HIPER

    NoHIPER

  • Special Attention

    NoSpecatt / Xsystem

  • Submitted date

    2016-09-27

  • Closed date

    2016-10-14

  • Last modified date

    2016-10-14

  • 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



Document information

More support for: Tivoli Storage Manager

Software version: 71L

Reference #: IT17245

Modified date: 14 October 2016