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

IBM Tivoli Storage Manager (TSM) Client 7.1.1 Downloads and READMEs

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 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