Re: ATAPI tape drives broken with libata

[Mark Lord <liml@rtr.ca>]

Alan Cox wrote:
> On Thu, 30 Aug 2007 12:11:39 -0400
> Chuck Ebbert <cebbert@redhat.com> wrote:
> 
>> On 08/29/2007 07:50 PM, Alan Cox wrote:
>>> Device Ready, Seek Complete, Data Request, Error
>>>
>>> DRQ and Error together is a bit odd to say the least
>>>
>>> It then commits suicide and falls off the bus. That may be due to the
>>> fact we use SRST on ATAPI device errors still rather than trying an ATAPI
>>> reset first. Shouldn't matter though.
>>>
>>> Since you are the lucky owner of the object in question can you dump the
>>> contents of the packet command going to the device when this occurs ?
>>>
>> I don't have it, it's a Fedora user. Maybe I should ask Mark Lord if he'll
>> send me the one he has.
>>
>> IAC how do I dump the packet? Use ata_scsi_dump_cdb()?
> 
> Yep - if the command issued is a packet command the cdb is 12-16 bytes of
> SCSI command block.

More or less the same behaviour is observed here with the Conner ATAPI tape unit
that I (still!) have on the shelf.

I'll see about instrumenting things for more info.  It really sucks as is, though!  :)

Cheers