IT17491: HIGH AVAILABILITY FAILOVER FROM STANDBY TO PRIMARY NEVER EXITS "SYNCHRONIZATION PENDING" STATUS

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)

APAR status

• Closed as program error.

Error description

• Primary/standby TPC-R servers never reach synchronized state
  when failing back to the primary after having the standby
  temporarily takeover as primary.
  In the TPC-R csmMessageX.log files, the following message is
  logged:
  [db2admin] IWNR1951I [2016-10-06 15:47:13.085+0000]
  High-Availability relationship
  tpcrhppnsm0010v.prod.wspan.com->TPCRSFDRUT0010V.resource.corp.lc
  l changed to the Synchronization Pending state.
  From that time forward until the service is restarted, it
  remains stuck in syncronization pending state.
  RECREATE STEPS:
  Takeover primary control from the standby server, then return
  control to the original primary, observe status get stuck and
  never update until restart of the services.
  ________________________________________________________________
  DB2 Version used for Server:    N/A
  The defect is against component:   5608TPC00
  Server/Manager build/release (TPC):   5.2.5
  ________________________________________________________________
  Problem as described by customer:  Primary TPC-R server stuck in
  Synchronization Pending state on giveback
  Initial customer impact (low/med/high):  med
  

Local fix

• Restart primary TPCR server
  

Problem summary

• ****************************************************************
  * USERS AFFECTED:                                              *
  * IBM Spectrum Control 5.2.x users using the Tivoli Storage    *
  * Productivity Center for Replication functionality.           *
  ****************************************************************
  * PROBLEM DESCRIPTION:                                         *
  * Primary/standby TPC-R servers never reach synchronized state *
  * when failing back to the primary after having the standby    *
  * temporarily takeover as primary.                             *
  ****************************************************************
  * RECOMMENDATION:                                              *
  * Upgrade to IBM Copy Services Manager.                        *
  ****************************************************************
  

Problem conclusion

• IBM Spectrum Control 5.2.x users who desire to use the
  Replication functionality should upgrade to IBM Copy Services
  Manager. IBM Copy Services Manager is available with every IBM
  Spectrum Control V5.2.8 or later license.
  

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

  TPC

• Fixed component ID

  5608TPC00

Applicable component levels