Tejun Heo wrote:
Chuck Ebbert wrote:
On Sun, 01 Mar 2009 21:26:33 +0900
Tejun Heo <tj@xxxxxxxxxx> wrote:
I ran 'hdparm -I' here. Why would it send BLANK to the drive??
(There was a 1.4 GB DVD-RW in the drive when I did that.)
CDB 0xa1 is BLANK alright. Is the problem reproducible?
Now that I think about it, 0xa0 is PACKET and 0xa1 is IDENTIFY_ATAPI.
You used "hdparm -I /dev/sr0", right? Mark, any ideas? Somehow
IDENTIFY is getting wrapped inside packet and sent to the device.
..
Does it do that with the latest versions, hdparm-9.11 or hdparm-9.12 ?
(probably fine with those)
In hdparm-9.7 I changed things so that it used ATA_12 rather than ATA_16
when passing short commands through SCSI. Worked for for disks, but failed
for optical drives -- libata doesn't process ATA_12 for ATAPI (oops).
Fixed it again in hdparm-9.11, so just upgrade.
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