I added code in libata-core.c at ata_qc_issue & ata_qc_issue_prot which dumps qc->cdb if protocol is ATAPI: 14:10:48 root: writing to the tape next 14:11:01 kernel: qc_issue: CDB 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 14:11:01 kernel: qc_issue_prot: CDB 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 14:11:01 kernel: qc_issue: CDB 03 00 00 00 60 00 00 00 00 00 00 00 00 00 00 00 14:11:01 kernel: qc_issue_prot: CDB 03 00 00 00 60 00 00 00 00 00 00 00 00 00 00 00 14:11:01 kernel: ata3: DRQ=1 with device error, dev_stat 0x59 14:11:01 kernel: ata3.00: exception Emask 0x0 SAct 0x0 SErr 0x0 action 0x2 frozen 14:11:01 kernel: ata3.00: cmd a0/00:00:00:00:20/00:00:00:00:00/a0 tag 0 cdb 0x0 data 0 14:11:01 kernel: res 51/60:03:00:00:20/00:00:00:00:00/a0 Emask 0x3 (HSM violation) 14:11:01 kernel: ata3: soft resetting port 14:11:02 kernel: ata3.00: revalidation failed (errno=-2) 14:11:02 kernel: ata3: failed to recover some devices, retrying in 5 secs 14:11:07 kernel: ata3: soft resetting port 14:11:08 kernel: spurious 8259A interrupt: IRQ7. 14:11:09 kernel: ata3.01: failed to IDENTIFY (I/O error, err_mask=0x1) 14:11:09 kernel: ata3: failed to recover some devices, retrying in 5 secs 14:11:14 kernel: ata3: soft resetting port 14:11:15 kernel: ata3.01: failed to IDENTIFY (I/O error, err_mask=0x1) 14:11:15 kernel: ata3.01: limiting speed to UDMA7:PIO4 14:11:15 kernel: ata3: failed to recover some devices, retrying in 5 secs 14:11:20 kernel: ata3: soft resetting port 14:11:20 kernel: ata3.01: failed to IDENTIFY (I/O error, err_mask=0x1) 14:11:20 kernel: ata3: failed to recover some devices, retrying in 5 secs 14:11:25 kernel: ata3: soft resetting port 14:11:26 kernel: ata3.00: configured for PIO2 14:11:26 kernel: ata3: EH pending after completion, repeating EH (cnt=4) 14:11:26 kernel: ata3: EH complete - To unsubscribe from this list: send the line "unsubscribe linux-ide" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
