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Summary



When running a restore the tape is mounted but no data transfer starts and the job never fails or completes and must be cancelled.

Symptoms



Restore or backup hangs after tape mount

Restore sender shows following messages:
Fri Dec 7 10:10:39 2018 SNBDRS3066D Cluster: Connecting to RR at node (XXXXXX) disk(DATA1:) port(1) instead of node(10.190.1.40)
Fri Dec 7 10:10:39 2018 SNBDRS0607I dm_send_restore_data: Reconnect/Connect RC (11001) - to node (XXXXXXX) port (1) module (ssdmrr).
Fri Dec 7 10:10:39 2018 SNBDRS0539I dm_process_buffer: RC (-6) from SEND_RESTORE_DATA.

Resolution



For a restore job to run successfully the device server needs to be able to resolve the name of the destination server.  

In this case the error 11001 CM_ERR_HOST_NOT_FOUND is reported. Error return codes from gethostbyname() and gethostbyaddr(). Authoritative Answer: Host not found. ACTION: This is a common host name resolution problem.

Make sure that client/proxy/device server/master server can resolve host names in both directions.
For example:
 
Environment:
  • Client  with Name ClientA and IP address 1.1.1.1
  • Device server with name DeviceB and IP address 1.1.1.2
  • Master server with name DPXMaster and IP Address 1.1.1.3
Name Resolution requirements:
  • ClientA must be able to resolve DPXMaster ( 1.1.1.3) and DeviceB ( 1.1.1.2) 
  • DPXMaster must be able to resolve DeviceB ( 1.1.1.2) and ClientA ( 1.1.1.1)
  • DeviceB must be able to resolve DPXMaster( 1.1.1.3) and ClientA ( 1.1.1.1)