VNX: File Replication - Completing transfer failed:DpRequest_vs_BranchExist. Session inactive (User Correctable)

           

   Article Number:     504636                                   Article Version: 3     Article Type:    Break Fix 
   

 


Product:

 

VNX2 Series,VNX8000,VNX5200,VNX5400,VNX5600,VNX5800

 

Issue:

 

 

A replication session may encounter the following rare error which halts the replication transfer:   
    "completing transfer failed:DpRequest_vs_BranchExist. Session inactive."   
    "internal policy has become inactive:DpRequest_vs_BranchExist."    
   
     /nas/log/sys_log will display the following:   

Aug 9 06:53:38 2017:DART:REP:ERROR:18:Slot 4:Source=CKMXXXXXXXXXXX_2017_CKMXXXXXXXXXXX(alias=repl_1), completing transfer failed:DpRequest_vs_BranchExist. Session inactive.Aug 9 06:53:38 2017:DART:DPSVC:ERROR:13:Slot 4:The replication session:CKMXXXXXXXXXXX_2017_CKMXXXXXXXXXXX internal policy has become inactive:DpRequest_vs_BranchExist.Aug 9 06:57:48 2017:DART:REP:ERROR:18:Slot 4:Source=CKMXXXXXXXXXXX_2017_CKMXXXXXXXXXXX(alias=repl_1), completing transfer failed:DpRequest_vs_BranchExist. Session inactive.Aug 9 06:57:48 2017:DART:DPSVC:ERROR:13:Slot 4:The replication session:CKMXXXXXXXXXXX_2017_CKMXXXXXXXXXXX internal policy has become inactive:DpRequest_vs_BranchExist.Aug 9 07:01:38 2017:DART:REP:ERROR:18:Slot 4:Source=CKMXXXXXXXXXXX_2017_CKMXXXXXXXXXXX(alias=repl_1), completing transfer failed:DpRequest_vs_BranchExist. Session inactive.Aug 9 07:01:38 2017:DART:DPSVC:ERROR:13:Slot 4:The replication session:CKMXXXXXXXXXXX_2017_CKMXXXXXXXXXXX internal policy has become inactive:DpRequest_vs_BranchExist.    
   
    This error causes the replication session to come to an abrupt halt and can only be resumed when a replication stop and start is completed from the Source side array.                                                           

 

 

Cause:

 

 

   

      This error is logged when there are checkpoints with duplicate ID's saved in DART memory at the time the message was logged. This state is temporary while checkpoints are being deleted or refreshed and new checkpoints are being created.   

   

          

                                                             

 

 

Resolution:

 

 

   

      Perform a stop of the affected replication session from the Source side array. When the session is stopped, perform a replication start to resume the replication session.      
     
      Example:     
     
      (1) Stop the replication session from the Source side:     
     
      nas_replicate -stop repl_1     
     
      (2) Start the replication session from the Source side:     
     
      nas_replicate -start repl_1     
     
      (3) Verify that the replication session has resumed:     
     
      nas_replicate -i repl_1     
     
     
      In the case of further re-occurrences , please contact DELL EMC Customer Service and quote this service request for further assistance.