Re: cdrecord dev=ATA cannont scanbus as non-root

[Markus Plail]

Jens Axboe <axboe@xxxxxxx> writes:

> On Mon, Nov 29 2004, J.A. Magallon wrote:
>> dev=ATAPI uses ide-scsi interface, through /dev/sgX. And:
>> 
>> > scsibus: -1 target: -1 lun: -1
>> > Warning: Using ATA Packet interface.
>> > Warning: The related Linux kernel interface code seems to be unmaintained.
>> > Warning: There is absolutely NO DMA, operations thus are slow.
>> 
>> dev=ATA uses direct IDE burning. Try that as root. In my box, as root:
>
> Oh no, not this again... Please check the facts: the ATAPI method uses
> the SG_IO ioctl, which is direct-to-device. It does _not_ go through
> /dev/sgX, unless you actually give /dev/sgX as the device name. It has
> nothing to do with ide-scsi. Period.
>
> ATA uses CDROM_SEND_PACKET. This has nothing to do with direct IDE
> burning, it's a crippled interface from the CDROM layer that should not
> be used for anything.  scsi-linux-ata.c should be ripped from the
> cdrecord sources, or at least cdrecord should _never_ select that
> transport for 2.6 kernels. For 2.4 you are far better off using
> ide-scsi.

Are you sure you don't mix ATA with ATAPI? I think ATA is equivalent to
dev=/dev/hdX. 

regards
Markus

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