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From: Rakhesh Sasidharan <rakhesh@rakhesh.com>
Subject: Re: Fixing a USB disk to a specific device name
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>> What I'd like to know is whether there's any way for me to ensure that the
>> da0 disk always appears as da0. I don't want it that tomm I plug in another
>> disk (or change the order of disks, though I'll be more careful with that)
>> and suddenly da0 is no longer at da0! That would hamper the boot process
>> ... not nice.
>
> It is possible, but not as daX. Use the glabel(8) utility to label your
> disks. They will show up as /dev/label/<yourlabel>
>
> The daX devices are created as the device is plugged in, so AFAIK it's
> impossible to permanently assign them a certain daX device.

Just mentioning this for archival purposes.

If you are mounting a device as /dev/label/<yourlabel> at boot time, it 
will fail unless you add a ''geom_label_load="YES"'' to your 
/boot/loader.conf file. Had me stumped for a while. This loads the geom 
label module at boot time and so labels are recognized.

Thanks,
Rakhesh

 				- Rakhesh
                                 http://rakhesh.net/