IC98590: DEFUNCT PROCESS ASSOCIATED WITH DEVICE SERVER PARENT PROCESS.

Refresh Pack 5.2.2 (June 2014) for Tivoli Storage Productivity Center
Refresh Pack 5.2.3 (August 2014) for Tivoli Storage Productivity Center
Fix Pack 5.2.4 (November 2014) for Tivoli Storage Productivity Center
Fix Pack 5.2.4.1 (December 2014) for Tivoli Storage Productivity Center
Refresh Pack 5.2.5 (March 2015) for Tivoli Storage Productivity Center (withdrawn)
Fix Pack 5.2.5.1 (April 2015) for Tivoli Storage Productivity Center (withdrawn)
Refresh Pack 5.2.6 (June 2015) for Tivoli Storage Productivity Center
Refresh Pack 5.2.7 (August 2015) for Tivoli Storage Productivity Center
IBM Spectrum Control V5.2.8 (December 2015)
IBM Spectrum Control V5.2.9 (February 2016)
IBM Spectrum Control V5.2.10 (May 2016)
IBM Spectrum Control V5.2.10.1 (July 2016)
IBM Spectrum Control V5.2.11 (August 2016)
IBM Spectrum Control V5.2.12 (November 2016)
IBM Spectrum Control V5.2.13 (March 2017)
IBM Spectrum Control V5.2.14 (May 2017)
IBM Spectrum Control V5.2.15 (August 2017)
IBM Spectrum Control V5.2.15.2 (November 2017)
IBM Spectrum Control V5.2.16 (March 2018)
IBM Spectrum Control V5.2.17 (May 2018)
Fix Pack 5.2.7.1 (February 2016) for Tivoli Storage Productivity Center

APAR status

• Closed as program error.

Error description

• DETAIL OF PROBLEM:
  
  The TPC NAPI process that is responsible for polling device
  events finishes with status TERMINIATED, which is the method
  that informs TPC that this process has finished.
  
  
  However, TPC ignores that status which
  results in numerous (defunct) processes linked to the TPC
  Device Server parent process to accumulate.  This problem only
  occurs on Unix systems.
  
  RECREATE STEPS: Run command> ps -ef
  
  i.e.
  root      2795 26491  0 Dec14 ?        00:00:00 [ep_xiv_napi.sh]
  <defunct>
  root      2798 26491  0 Dec16 ?        00:00:00 [ep_svc_napi.sh]
  <defunct>
  root      2801 26491  0 Dec16 ?        00:00:00 [ep_svc_napi.sh]
  <defunct>
  root      2843 26491  0 Dec05 ?        00:00:00 [ep_svc_napi.sh]
  <defunct>
  root      2873 26491  0 Nov25 ?        00:00:00 [ep_svc_napi.sh]
  <defunct>
  root      2906 26491  0 Nov26 ?        00:00:00 [ep_svc_napi.sh]
  <defunct>
  root      2969 26491  0 Dec17 ?        00:00:00 [ep_xiv_napi.sh]
  <defunct>
  
  
  
  ________________________________________________________________
  ______
  DB2 Version used for Server: N/A
  The defect is against component: 5608TPC00
  Server/Manager build/release (TPC):   5.2.0
  Agent build/release (TPC):
  Server/Manager (OS):  Linux
  Agent (OS):
  ________________________________________________________________
  
  Problem as described by customer:
  Many defunct processes do not auto-purge
  
  Initial customer impact (low/med/high):  med
  

Local fix

• Restart of Device Server clears out the defunct processes.
  Contact Support for fix.
  

Problem summary

• ****************************************************************
  * USERS AFFECTED:                                              *
  * TPC 5.1.1 or 5.2.0  users running storage subsystem probes   *
  * on TPC servers installed on Linux or AIX.                    *
  ****************************************************************
  * PROBLEM DESCRIPTION:                                         *
  * Running "ps -ef | grep defunct" on the computer where TPC    *
  * server runs will display a lot of napi defunct processes:    *
  * root      1794 26491  0 Dec06 ?        00:00:00              *
  * [ep_xiv_napi.sh] <defunct>                                   *
  * root      1864 26491  0 Dec11 ?        00:00:00              *
  * [ep_svc_napi.sh] <defunct>                                   *
  * root      3056 26491  0 Dec05 ?        00:00:00              *
  * [ep_pm_napi.sh] <defunct>                                    *
  ****************************************************************
  * RECOMMENDATION:                                              *
  * Apply fix maintenance when available.                        *
  ****************************************************************
  

Problem conclusion

• TPC code has been modified to correctly call waitpid for all the
  napi child processes.
  
  The fix for this APAR is targeted for the following maintenance
  package:
  
  | fix pack | 5.1.1-TIV-TPC-FP0004
  | refresh pack | 5.2-TIV-TPC-RP0001 - target March 2014
  
  http://www-01.ibm.com/support/docview.wss?&uid=swg21320822
  
  The target dates for future refresh packs or fix packs do not
  represent a formal commitment by IBM. The dates are subject to
  change without notice.
  

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

• Device
  

Fix information

• Fixed component name

  TPC

• Fixed component ID

  5608TPC00

Applicable component levels

• R520 PSY

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