Subject: Re: System unique identifier.....
To: Jason Thorpe <email@example.com>
From: Matthew Jacob <firstname.lastname@example.org>
Date: 06/24/1999 23:41:34
On Thu, 24 Jun 1999, Jason Thorpe wrote:
> On Thu, 24 Jun 1999 15:02:25 -0700 (PDT)
> Matthew Jacob <email@example.com> wrote:
> > I was talking about this on linux-kernel, but it also applies to *BSD...
> > What're folks' motions of a settable system unique identifier, available
> > prior to mountroot? This identifier has to be 64 bits or better and must
> > be persistent across reboots.
> ...to be used for...?
Specifically in this case a Node WWN for fibre channel fabrics that does
not depend upon an assigned WWN in any particular Fibre Channel card
(multipathing might make it desirable to have a synthetic Node WWN that
can also be passed to partner systems in a failover configuration).
More generally a system unique identifier available early (pre mountroot)
could be useful for a number of things. Why're you asking?