NetWorker: As operações de fita apresentam falha com o erro: read open error: command completed successfully (o status da unidade é MEDIA LOAD OR EJECT FAILED) 

• A rotulagem ou montagem de volumes de fita apresenta falha com a mensagem de erro:
  read open error: command completed successfully (drive status is MEDIA LOAD OR EJECT FAILED)
  
  
• Logs do daemon (daemon.raw) exibem as seguintes advertências e erros durante as operações de rotulagem ou montagem:
  

  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'.

• Verificação de status da unidade de fita usando o mt O comando mostra erros de dados, indicando possíveis problemas de hardware ou mídia:
  
  

  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)

• Os logs do sistema operacional relatam advertências relacionadas a falhas de carregamento ou ejeção de mídia no dispositivo de fita, como:
  

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

Como o erro sugere, problema de hardware (unidade de fita) ou mídia de fita.

Verifique se o problema está em uma unidade de fita específica ou caminho de controle trocando as unidades. O fornecedor de hardware pode fornecer melhor assistência sobre como lidar com essa situação.