IT40930: SERVER MAY CRASH DUE TO ?SHOW REPLICATION? COMMAND AND ?NODE REPLICATION? PROCESS RUN CONCURRENTLY

8.1.15.100-IBM-SPSRV-WindowsX64
8.1.15.100-IBM-SPSRV-Linuxx86_64
8.1.15.100-IBM-SPSRV-Linuxs390x
8.1.15.100-IBM-SPSRV-Linuxppc64le
8.1.15.100-IBM-SPSRV-AIX
8.1.16.000-IBM-SPCMS-WindowsX64
8.1.16.000-IBM-SPCMS-WindowsI32
8.1.16.000-IBM-SPCMS-Linuxx86_64
8.1.16.000-IBM-SPOC-WindowsX64
8.1.16.000-IBM-SPOC-Linuxx86_64
8.1.16.000-IBM-SPOC-Linuxs390x
8.1.16.000-IBM-SPOC-LinuxPPC64le
8.1.16.000-IBM-SPOC-AIX
8.1.16.000-IBM-SPSRV-WindowsX64
8.1.16.000-IBM-SPSRV-Linuxx86_64
8.1.16.000-IBM-SPSRV-Linuxs390x
8.1.16.000-IBM-SPSRV-Linuxppc64le
8.1.16.000-IBM-SPSRV-AIX
IBM Spectrum Protect Server V8.1 Fix Pack 16 (V8.1.16) Downloads
IBM Spectrum Protect Server V8.1.15.X interim fix downloads

APAR status

• Closed as program error.

Error description

• On the IBM Spectrum Protect Server, when a replication process
  (node replication or replication storage rule) and the ?show
  replication? command run concurrently, there is a small timing
  window where the server can crash.
  The issue can happen the same if ?show replication? run
  manually.
  
  GetcoreInfo.txt on Linux will show a stack similar to:
  
  #0 0x0000000000b7105c in NrShowReplication ...
  #1 0x0000000000a4cc31 in imShowReplication ...
  #2 0x00000000006954b6 in AdmShow ...
  #3 0x000000000057c002 in AdmCommandLocal ...
  #4 0x000000000057dd8f in admCommand ...
  #5 0x00000000014140a7 in RunCommand ...
  #6 0x0000000001416d21 in ServerMonSixtyMinThread ...
  #7 0x000000000149d210 in StartThread ...
  #8 0x00007f90025aaea5 in start_thread () ...
  #9 0x00007f8ffeaabb0d in clone () ...
  
  
  | MDVREGR 8.1.11.000-TIV_5698ISMSV |
  
  
  IBM Spectrum Protect Server version Affected: Spectrum Protect
  Servers 8.1.11 and later on all supported platforms.
  

Local fix

• 1: stop running ?show replication?
  2: stop ServerMonSixtyMinThread  to run ?show replication by :
  Modify  commands.ini,  comment out the ?SHOW REPLICATION?  in
  below stanza:
  
  ?commands.ini
  
  [srv_60min]
  ###############################################################
  ############
  # Commands run approximately every 60 minutes.
  # Output file:   *-60min-show.xml
  ###############################################################
  ############
  SHOW ALLOC
  # SHOW REPLICATION
  

Problem summary

• ****************************************************************
  * USERS AFFECTED:                                              *
  * All IBM Spectrum Protect server users.                       *
  ****************************************************************
  * PROBLEM DESCRIPTION:                                         *
  * See error description.                                       *
  ****************************************************************
  * RECOMMENDATION:                                              *
  * Apply fixing level when available. This problem is currently *
  * projected to be fixed in levels 8.1.15.100 and 8.1.16. Note  *
  * that this is subject to change at the discretion of IBM.     *
  ****************************************************************
  

Problem conclusion

• This problem was fixed.
  Affected platforms for reported release:  AIX, Linux, and
  Windows.
  

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:

Fix information

• Fixed component name

  TSM SERVER

• Fixed component ID

  5698ISMSV

Applicable component levels