Hard drive device names... Serial Numbers?

[Ronald Klop]

On Tue, 26 Feb 2013 00:38:17 +0100, Ronald F. Guilmette  
<rfg at tristatelogic.com> wrote:

>
[snip some talk about spam from comcast.net]
>
> I've tried to plow through the references Jeremy gave regading the "wired
> down" capability of CAM(4).  I think that I may sort-of understand it.
> It does appear to be _a_ solution.  I'm not yet 100% persuaded that it
> is the _best_ solution, and the idea of using serial numbers (or WWN
> numbers) is still appealing, at least to me.  But I'm not going to
> advocate for that, mostly because I don't feel that I fully understand
> this "wired down" stuff yet.  I need to look into that more before I
> say anything else.
>
> At least I come away with the the satisfaction of knowing that (a) I am
> indeed not the first person to have either thought of or suggested using
> drive serial numbers and also (b) that this idea _has_ already been well
> and truly discussed, apparently by and among better minds than mine.
>
>
> Regards,
> rfg
>
>
> P.S.  I confess that I've only skimmed the material on the "wired down"
> capability of CAM(4).  Perhaps the answer to this question is burried in
> there someplace, but I'd just like to ask: What are the rules, if any
> regarding what I can rename a given controller channel to within the
> /boot/loader.conf file?  Could I rename one to, for example  
> /dev/foobar707
> if I wanted to?  If not, then what are the rules?


This cam wiring can be very good for complex setups with dedicated  
sysadmins, but for a lot of FreeBSD users mounting on serial number makes  
administrating their servers really easy.
I would think both ways can exist together.

Ronald,