[Parted-maintainers] Bug#693510: Treat adaN devices as SCSI (cam) devices; improve detection

[Jeff Epler]

Control: tags -1 + patch

As noted earlier, the problem is that devices like "ada0" are
incorrectly being treated as IDE devices (ad0), not SCSI (cam) devices
(da0); subsequent ioctls specific to IDE devices (such as IOCATAGPARM)
would fail.

I believe the attached change (debdiff) resolves the problem.  

I only tested on an installed system, but believe it would equally well
fix the problem as seen in the installer.

However, I do not have any true scsi devices to test it on, nor do I
have a freebsd 8 kernel to test it on (reportedly, the problem I'm
solving occurs only on the freebsd 9 kernel)

Also, I experienced a little feature creep as I noticed that 'model' was
blank and 'sector size' was not right for AF drives.  These are
corrected as well.

Jeff
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