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      SCSI tape error

      This article is for Amanda Enterprise (AE)

      Error Message

      taper: fatal changer error: slot 4: mtx: Request Sense: Long Report=yes
taper: changer problem: no slots available

      Error Description

      This type of error occurs due to some tape SCSI errors

      Solution

      1. Power off your backup-server and tape device.
      2. Make sure all connections are secure including scsi cables, scsi cards, and scsi terminators.
      3. Power on tape device and give it a few minutes to initalize completely.
      4. Once the tape device has initialized, please turn on the backup server, and let it power up normally.
      5. Type the command dmesg | grep -i scsi (you can also grep for nst0) and look for any error messages.

      At this time if you do see any scsi tape errors in the /var/log/messages or in the dmesg output, then please go ahead and address these.

      This will eliminate the possibility of hardware errors.