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NDMP backup failed with error tapemc.device.releaseFail

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Applies to

  • ONTAP 9
  • NDMP
  • Tape libraries with medium changer devices

Issue

  • NDMP cannot open the medium changer device from ONTAP.
  • NDMP log :

kern_ndmpd: ERROR: SCSI: OPEN DEVICE: open failed with error 16

  • EMS :

 [Node1: tape_admin: tapemc.device.releaseFail:error]: Device reservation release failed on Medium changer device (unknown).

  • Manual release appears successful, yet state remains “in use”.

::> system node run -node XXXX  -command "storage show  mc"
Medium Changer: XXXX
Description:HPE  MSL3040
Serial Number:  XXXX
WWNN: XXXX
WWPN:    XXXX
Alias Name(s):  mc0
Device State:   in use

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