IT37410: MQ appliance "sethagrp -e" command becomes unresponsive when queue manager file system is in use

APAR status

• Closed as program error.

Error description

• When removing an HA queue manager with the 'sethagrp -e', the
  command hung and it had to be manually terminated.
  
  The runmqras taken while the command was hanging shows that the
  less command used internally by dspmqerr command was accessing
  the queue manager logs.
  
  COMMAND       PID     TID      USER   FD      TYPE
  DEVICE SIZE/OFF       NODE NAME
  less       433693          mqsystem    4r      REG
  147,7  7998616    4161545
  /var/mqm/vols/QM1/qmgr/QM1/errors/AMQERR01.LOG
  

Local fix

• Contact IBM Support to provide assistance to manually terminate
  the process accessing the queue manager logs.
  

Problem summary

• ****************************************************************
  USERS AFFECTED:
  Users running dspmqerr command often likely to be affected by
  this problem.
  
  
  Platforms affected:
  MultiPlatform
  
  ****************************************************************
  PROBLEM DESCRIPTION:
  The current logic in ending the queue manager did not detect a
  complete set of processes that were accessing the queue manager
  file and so did not attempt to terminate them. This caused a
  hang in sethagrp -e command.
  

Problem conclusion

• The code has been modified to correct the detection of processes
  accessing the queue manager filesystem.
  
  ---------------------------------------------------------------
  The fix is targeted for delivery in the following PTFs:
  
  Version    Maintenance Level
  v9.2 LTS   9.2.0.4
  v9.x CD    9.2.4
  
  The latest available maintenance can be obtained from
  'WebSphere MQ Recommended Fixes'
  http://www-1.ibm.com/support/docview.wss?rs=171&uid=swg27006037
  
  If the maintenance level is not yet available information on
  its planned availability can be found in 'WebSphere MQ
  Planned Maintenance Release Dates'
  http://www-1.ibm.com/support/docview.wss?rs=171&uid=swg27006309
  ---------------------------------------------------------------
  

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

  MQ APPL M2002 V

• Fixed component ID

  5737H4701

Applicable component levels