14:26:48 root: writing
14:26:54 kernel: qc_issue: CDB 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
14:26:54 kernel: qc_issue_prot: CDB 00 00 00 00 00 00 00 00 00 00 00 00 00 00 
00 00
14:26:54 kernel: qc_issue: CDB 05 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
14:26:54 kernel: qc_issue_prot: CDB 05 00 00 00 00 00 00 00 00 00 00 00 00 00 
00 00
14:26:54 kernel: qc_issue: CDB 03 00 00 00 60 00 00 00 00 00 00 00 00 00 00 00
14:26:54 kernel: qc_issue_prot: CDB 03 00 00 00 60 00 00 00 00 00 00 00 00 00 
00 00
14:26:54 kernel: ata3: DRQ=1 with device error, dev_stat 0x59
14:26:54 kernel: st0: Sense Key : Illegal Request [current]
14:26:54 kernel: st0: Add. Sense: Invalid command operation code


One more bit of possibly helpful information here.

The last time I wrote a working ATAPI Tape driver,
it always translated SCSI opcode 0x05 (READ_BLOCK_LIMITS) into MODE_SENSE.

I don't remember why it did that, but it was necessary at the time.
So I wonder if the error above has anything to do with the READ_BLOCK_LIMITS
command that can be seen just above the TEST_UNIT_READY and REQUEST_SENSE CDBs ?

Cheers
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