RecoverPoint: Replication process restarts

           

   Article Number:     539517                                   Article Version: 2     Article Type:    Break Fix 
   

 


Product:

 

RecoverPoint,RecoverPoint CL,RecoverPoint EX,RecoverPoint SE,RecoverPoint CL 5.1 SP2 P1,RecoverPoint CL 5.1 SP3,RecoverPoint CL 5.1 SP4,RecoverPoint EX 5.1 SP2 P1,RecoverPoint EX 5.1 SP3,RecoverPoint EX 5.1 SP4,RecoverPoint SE 5.1 SP2 P1

 

Issue:

 

 

   

      Replication process restarts         
          CLI logs will show the following event
     
                  Time: <Day> <Date> <Customer Time>         
                      Topic: RPA         
                      Scope: NORMAL         
                      Level: ERROR & CLEAR         
                      Event ID: 10207         
                      Cluster: <Cluster Name>         
                      Global links: None         
                      RPAs: <RPA ID>         
                      Summary: Internal replication process has been restarted         
                      Service Request info: N/A
   

   

      From storage logs:     
      Oct 21 05:05:57 localhost kernel: [14472039.329610] #0 - sll_map_pages: unable to map user pages: r=226 cur_num_pages=227 data_length=926208 rw=2                      
          Oct 21 05:05:57 localhost kernel: [14472039.329616] #0 - sll_dispatch_commands: sll_map_pages failed                      
          Oct 21 05:05:57 localhost kernel: [14472039.329620] #0 - sll_ioctl_do_generate_io: sll_dispatch_cmd failed in map_pages (res_dispatch = 2)
   

                                                             

 

 

Cause:

 

 

   

      Transient situation around mapping user pages to kernel memory where processes access invalid memory, which leads to a segmentation fault.   

                                                             

 

 

Resolution:

 

 

   

      Workaround:     
     
      Increase the value of t_scsiInitiatorMaxMapPagesFailures from 2  to 5 and reboot the RPAs.   

   

     
      Resolution:     
     
      Dell EMC engineering is currently investigating this issue. A permanent fix is still in progress. Contact the Dell EMC Customer Support Center or your service representative for assistance and reference this solution ID.