Any objections/comments on axing out old ATA stack?

Freddie Cash fjwcash at
Wed Mar 27 21:38:06 UTC 2013

On Wed, Mar 27, 2013 at 2:32 PM, Steve Kargl <
sgk at> wrote:

> On Wed, Mar 27, 2013 at 11:22:14PM +0200, Alexander Motin wrote:
> > Hi.
> >
> > Since FreeBSD 9.0 we are successfully running on the new CAM-based ATA
> > stack, using only some controller drivers of old ata(4) by having
> > `options ATA_CAM` enabled in all kernels by default. I have a wish to
> > drop non-ATA_CAM ata(4) code, unused since that time from the head
> > branch to allow further ATA code cleanup.
> >
> > Does any one here still uses legacy ATA stack (kernel explicitly built
> > without `options ATA_CAM`) for some reason, for example as workaround
> > for some regression?
> Yes, I use the legacy ATA stack.
> You're missing the reason for why you're running the old ATA stack.

Do you have hardware that doesn't work with ATA_CAM?  Have you not tried
ATA_CAM on that box?  Some other reason?

Freddie Cash
fjwcash at

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