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IC99576: SNAPDIFF BACKUP REPORTED AS SUCCESSFUL THOUGH NOT ALL CHANGED FILES BEING SAVED DUE TO SESSION HAVING TIMED OUT

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APAR status

  • Closed as program error.

Error description

  • An incremental snapdiff backup is reported as successful though
    not all changed files have been saved.
    A client trace analysis shows a network failure which is not
    reported in dsmerror.log , neither in dsmsched.log:
      ANS1005I TCP/IP read error on socket = 1452, errno = 10054,
    reason : 'An existing connection was forcibly closed by the
    remote host
    
    In the Tivoli Storage Manager server activity log, there is a
    session timeout some time before which explains the client
    network error :
      ANR0482W  Session xxx for node "nodename" (client platform)
    terminated - idle for more than 30 minutes
    
    The backup finishes "successfully", despite this error, but it
    does not save everything that should have been saved.
    
    
    Tivoli Storage Manager Versions Affected:  AIX,  Linux and
    Windows client release 6.1 , 6.2 , 6.3 , 6.4 , 7.1
    
    Customer/L2 Diagnostics:
    
    - The client dsmsched.log shows success, but only a few objects
    have been saved when a lot more are expected :
    
    Incremental by snapshot difference of volume '\\filer\backup$'
     ....
    Successful incremental backup of '\\file1\backup$'
    
    --- SCHEDULEREC STATUS BEGIN
    Session established with server TSM: AIX-RS/6000
      Server Version 6, Release 2, Level 3.0
      Server date/time: 02/07/2014 16:12:34  Last access: 02/07/2014
    16:11:30
    
    Total number of objects inspected:        0
    Total number of objects backed up:       40
    Total number of objects updated:          0
    Total number of objects rebound:          0
    Total number of objects deleted:          0
    Total number of objects expired:          0
    Total number of objects failed:           0
    Total number of subfile objects:          0
    Total number of bytes inspected:      232.54 KB
    Total number of bytes transferred:    232.54 KB
    Data transfer time:                    0.07 sec
    Network data transfer rate:        2,943.56 KB/sec
    Aggregate data transfer rate:          0.04 KB/sec
    Objects compressed by:                    0%
    Total data reduction ratio:            0,00%
    Subfile objects reduced by:               0%
    Elapsed processing time:           01:27:16
    --- SCHEDULEREC STATUS END
    --- SCHEDULEREC OBJECT END @263 02/07/2014 14:43:56
    Scheduled event '@263' completed successfully.
    
    
    Initial Impact: Low
    
    Additional Keywords:
    TSM , ontap , netapp nseries , nas , snapshot
    

Local fix

  • - Increase the server option IDLETIMEOUT value to a larger value
      to prevent the timeout while backup is on going.
         example:   SETOPT IDLETIMEOUT 180
      And run one backup with additional option -createnewbase=yes
      to force the backup of all missed files, this option must be
      used at least one time and removed for next backup..
    

Problem summary

  • ****************************************************************
    * USERS AFFECTED: Version 7.1.0 and lower backup-archive       *
    *                 clients running on Windows, AIX or Linux.    *
    ****************************************************************
    * PROBLEM DESCRIPTION: See ERROR DESCRIPTION                   *
    ****************************************************************
    * RECOMMENDATION: Apply fixing level when available. This      *
    *                 problem is currently projected to be fixed   *
    *                 in levels 7.1.1 and 6.4.2. Note that this    *
    *                 is subject to change at the discretion of    *
    *                 IBM.                                         *
    ****************************************************************
    *
    

Problem conclusion

  • The problem described in this APAR has been fixed so that it no
    longer occurs.
    

Temporary fix

  • interim fix 6.3.2.4
    

Comments

APAR Information

  • APAR number

    IC99576

  • Reported component name

    TSM CLIENT

  • Reported component ID

    5698ISMCL

  • Reported release

    62W

  • Status

    CLOSED PER

  • PE

    NoPE

  • HIPER

    NoHIPER

  • Special Attention

    NoSpecatt

  • Submitted date

    2014-02-24

  • Closed date

    2014-03-21

  • Last modified date

    2015-04-23

  • APAR is sysrouted FROM one or more of the following:

  • APAR is sysrouted TO one or more of the following:

Modules/Macros

  • DSMC
    

Fix information

  • Fixed component name

    TSM CLIENT

  • Fixed component ID

    5698ISMCL

Applicable component levels

  • R63A PSY

       UP

  • R63L PSY

       UP

  • R63W PSY

       UP

  • R64A PSY

       UP

  • R64L PSY

       UP

  • R64W PSY

       UP

  • R71A PSY

       UP

  • R71L PSY

       UP

  • R71W PSY

       UP



Document information

More support for: Tivoli Storage Manager

Software version: 62W

Reference #: IC99576

Modified date: 23 April 2015