IT35252: Duplicate entry in DRBD resource file causes HA replication to be stopped in MQ appliance.

APAR status

• Closed as program error.

Error description

• When executing dltdrprimary command, the DR definition was
  deleted successfully on the HA primary appliance, however, due
  to an unexpected issue, the entry for this queue manager was
  not deleted from the drbd resource file on the HA secondary
  appliance. When an attempt to recreate the DR definition for
  the same queue manager was performed by running crtdrprimary a
  duplicate entry was added to the drbd resource file for the
  same queue manager.
  
  This then causes multiple failures, such as, drbd service on the
  node goes down
  and the HA queue managers are unable to run on this node.
  

Local fix

• Contact IBM Support to get service console access to cleanup
  the DR resources.
  

Problem summary

• ****************************************************************
  USERS AFFECTED:
  MQ appliance users configuring DR queue manager
  
  
  Platforms affected:
  MultiPlatform
  
  ****************************************************************
  PROBLEM DESCRIPTION:
  The dltdrprimary command may fail to remove the DR resource
  information from the queue manager resource file and a
  subsequent crtdrprimary will add a duplicate resource definition
  to this file . This corruption in the resource file will cause
  failure while performing any further HA/DR operations.
  

Problem conclusion

• The code has been modified to ensure no duplicate resource
  definition are present in the DRBD resource file.
  
  ---------------------------------------------------------------
  The fix is targeted for delivery in the following PTFs:
  
  Version    Maintenance Level
  v9.2 LTS   9.2.0.5
  v9.x CD    9.3.0.0
  
  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 APPLIANCE M2

• Fixed component ID

  5737H4700

Applicable component levels