Accessing disks via their serial numbers.

[Pawel Jakub Dawidek]

On Mon, Jun 26, 2006 at 11:21:02AM +0000, Poul-Henning Kamp wrote:
> In message <20060626095250.GB12511 at garage.freebsd.pl>, Pawel Jakub Dawidek writ
> es:
> 
> >> >Glabel(8) currently supports labeling any GEOM provider, but it steals
> >> >the last sector, which is not always acceptable.
> >>=20
> >> When is it not acceptable ?
> >
> >When last sector is already occupied.
> 
> And what is last sector occupied by ?

This is simlar situation to the most common problem with gmirror(8).
When people decide to put their file system onto a mirror, it will eat
partition's last sector, which isn't always safe.
When disk is already partitioned and file systems are there, you cannot
just take the last sector.

> >I hope we don't play "convince phk@" game here.
> 
> In fact we do.  I still very much consider myself in charge of
> GEOM architecture, so anything that changes the GEOM api need to
> pass the "convince phk" threshold.

I think this won't touch GEOM infrastructure. Most likely disk(9) KPI
will be extended.

-- 
Pawel Jakub Dawidek                       http://www.wheel.pl
pjd at FreeBSD.org                           http://www.FreeBSD.org
FreeBSD committer                         Am I Evil? Yes, I Am!
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