From: Mark Lord <liml@rtr.ca>
To: Tejun Heo <tj@kernel.org>
Cc: Chuck Ebbert <cebbert@redhat.com>, linux-ide@vger.kernel.org
Subject: Re: ahci fails with SATA DVD drive, IDE mode works
Date: Wed, 04 Mar 2009 10:51:02 -0500 [thread overview]
Message-ID: <49AEA366.5070906@rtr.ca> (raw)
In-Reply-To: <49ADD9C7.7000207@kernel.org>
Tejun Heo wrote:
> Chuck Ebbert wrote:
>> On Sun, 01 Mar 2009 21:26:33 +0900
>> Tejun Heo <tj@kernel.org> 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.
prev parent reply other threads:[~2009-03-04 15:51 UTC|newest]
Thread overview: 12+ messages / expand[flat|nested] mbox.gz Atom feed top
2009-02-11 22:45 ahci fails with SATA DVD drive, IDE mode works Chuck Ebbert
2009-02-19 9:10 ` Tejun Heo
2009-02-21 23:17 ` Chuck Ebbert
2009-02-25 6:06 ` Tejun Heo
2009-02-25 23:15 ` Chuck Ebbert
2009-02-26 1:07 ` Tejun Heo
2009-02-27 22:57 ` Chuck Ebbert
2009-03-01 12:26 ` Tejun Heo
2009-03-02 13:02 ` Mark Lord
2009-03-03 21:23 ` Chuck Ebbert
2009-03-04 1:30 ` Tejun Heo
2009-03-04 15:51 ` Mark Lord [this message]
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