IT33124: NO-QUERY RESTORE WITH IBM SPECTRUM PROTECT CLIENT VERSION 8.1 MIGHT BE SLOW ON UNIX AND LINUX PLATFORMS

APAR status

• Closed as program error.

Error description

• When performing a No-query restore (NQR) with IBM Spectrum
  Protect client backup version 8.1 with many directory objects,
  the NQR might be slow on UNIX and Linux platforms.  The NQR
  slows down since directories are being added to a processing
  list but processed directories do not get removed from this
  processing list.  The more directories to be restored, the
  longer the processing list grows, increasing the elapsed
  processing time.
  
  An example of a slow NQR might show:
   Total number of objects restores:    60,003
   Total number of objects failed:           0
   Total number of bytes transferred:   240,78 MB
   Data transfer time:                    1.02 Sec
   Network data transfer rate:      227,121.34 KB/sec
   Aggregate data transfer rate:      1.056.24 KB/sec
   Elapsed processing time:           00:03:34
  
  With the fix installed, the NQR might show:
   Total number of objects restores:    60,003
   Total number of objects failed:           0
   Total number of bytes transferred:   240,78 MB
   Data transfer time:                    2.83 Sec
   Network data transfer rate:       90,347.34 KB/sec
   Aggregate data transfer rate:      4.056.24 KB/sec
   Elapsed processing time:           00:00:57
  
  
  Customer/Support Diagnostics: None
  
  
  IBM Spectrum Protect versions affected: IBM Spectrum Protect
  Client 8.1.0 and higher on UNIX and Linux platforms
  
  
  Initial Impact: Medium
  
  
  Additional Keywords: TS003253898 Linux Unix restore slow NQR
  

Local fix

• Use the option "DISABLENQR YES".
  

Problem summary

• ****************************************************************
  * USERS AFFECTED:                                              *
  * IBM Spectrum Protect client versions 7.1 and 8.1 on all      *
  * Linux and UNIX.                                              *
  ****************************************************************
  * PROBLEM DESCRIPTION:                                         *
  * see ERROR DESCRIPTION                                        *
  ****************************************************************
  * RECOMMENDATION:                                              *
  * Apply fixing level when available. This problem is projected *
  * to be fixed in level 8.1.11. Note that this is subject to    *
  * change at the discretion of IBM.                             *
  ****************************************************************
  *
  

Problem conclusion

• There will not be performance degradation during No Query
  Restore (NQR) operation.
  

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
  

Fix information

• Fixed component name

  TSM CLIENT

• Fixed component ID

  5698ISMCL

Applicable component levels