/dev/sda to ata_host

[Greg Freemyer]

Valdis.Kletnieks at vt.edu wrote:

>(Hint - I'm not convinced that all devices named /dev/sd* have an
>ata_host
>structure.  

Libata is a self admitted kludge.

/dev/sdx => scsi disk

Libata has stuck itself under the scsi disk driver, so you are right that not all scsi disks have a ata_host kludge, only the imposers should have one.

One path I have never chased is for an external usb connected drive.  Scsi commands are sent a across the usb bus so there is probably not any libata involvement.

Greg
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