Switch from legacy ata(4) to CAM-based ATA

[Matthew Jacob]

>> now that I've worked with it a bit, I really like it. Doing this by default
>> in 9.0 would be a really useful step forward, and would allow greater
>> innovation down the road.
>>
>> Is there a handy tutorial somewhere for making this change in FreeBSD? Or is
>> it even possible to do in a rational way?
>
> glabel create <label> /dev/<blah>
> sed -i 's,/dev/<blah>,/dev/labels/<label>,g' /etc/fstab
>

or, dumpfs /dev/ad0a (or whatever it is) to get the UFS id, and do that, 
as in:


/dev/ufsid/4cbfaf39a70e852e     /               ufs     rw  1 1