NetWorker: Las operaciones de cinta fallan con el error: read open error: command completed successfully (el estado de la unidad es MEDIA LOAD OR EJECT FAILED) 

• El etiquetado o el montaje de volúmenes de cinta fallan con el mensaje de error:
  read open error: command completed successfully (drive status is MEDIA LOAD OR EJECT FAILED)
  
  
• Registros de demonio (daemon.raw) muestran las siguientes advertencias y errores durante las operaciones de etiquetado o montaje:
  

  NSR info media warning: <device_name> opening: MEDIA LOAD OR EJECT FAILED  
  nsrd NSR info media warning: <device_name> moving: read open error: command completed successfully (drive status is MEDIA LOAD OR EJECT FAILED)  
  nsrd NSR warning Status update: operation 'SNMD_DEVOP_DEACTIVATE', instance '356', on device '<device_name>' has completed abnormally with status 'DEV_OP_ERROR'.

• Comprobación del estado de la unidad de cinta mediante mt El comando muestra errores de datos, lo que indica posibles problemas de hardware o medios:
  
  

  mt -f <device_name> status  
  <device_name>:  
  Current Status: Data error (cyclic redundancy check).
  
          default blocksize = 65536  
          maximum blocksize = 524288  
          minimum blocksize = 1  
          MaximumPartitionCount = 0  
          EOTWarningZoneSize = 0  
          Error Correction Enabled  
          CompressionEnabled  
          Features:  
                  Performs SHORT erase operation  
                  Performs LONG erase operation  
                  Performs IMMEDIATE erase operation  
                  Can report maximum tape capacity  
                  Can report amount of tape remaining  
                  Support FIXED block length mode  
                  Support VARIABLE block length mode  
                  Returns errors on write if tape is write-protected  
                  Supports hardware data compression  
                  Can provide current absolute device block address  
                  Can provide current logical block address and partition  
                  Can physically load and/or unload tape  
                  Support PREVENT / ALLOW Media Removal  
                  Performs IMMEDIATE rewind operations  
                  Allows Setting FIXED LENGTH or VARIABLE block sizes  
                  Performs IMMEDIATE Load / Unload operations  
                  Allows hardware data compression to be enabled/disabled  
                  Can position tape to an absolute physical block  
                  Can position tape to a logical block (and partition)  
                  Can position tape to END of RECORDED DATA  
                  Can perform tape record positioning (backwards/forwards)  
                  Can perform tape file positioning (backwards/forwards)  
                  Can move backwards across records or filemarks or setmarks  
                  Can write FILEMARKS  
                  Performs IMMEDIATE tape mark write operations  
  operation status on <device_name> failed: Data error (cyclic redundancy check).  
  (Investigate bad media or hardware)

• Los registros del sistema operativo informan advertencias relacionadas con fallas de expulsión o carga de medios en el dispositivo de cinta, como por ejemplo:
  

  NetWorker media: (warning) rd=dcp-nwsn1.rnp.local:\\.\Tape4 opening: MEDIA LOAD OR EJECT FAILED

Como se sugiere en el error, hay un problema de hardware (unidad de cinta) o de medios de cinta.

Intercambie las unidades para verificar si el problema está relacionado con una unidad de cinta o una ruta de control específicas. El proveedor de hardware puede proporcionar una mejor asistencia sobre cómo lidiar con esta situación.