Date: Thu, 24 Jun 1999 23:41:34 -0700 (PDT) From: Matthew Jacob <mjacob@feral.com> To: Jason Thorpe <thorpej@nas.nasa.gov> Cc: freebsd-hackers@FreeBSD.ORG, tech-kern@netbsd.org Subject: Re: System unique identifier..... Message-ID: <Pine.BSF.4.05.9906242337010.37256-100000@semuta.feral.com> In-Reply-To: <199906250545.WAA20374@lestat.nas.nasa.gov>
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On Thu, 24 Jun 1999, Jason Thorpe wrote: > On Thu, 24 Jun 1999 15:02:25 -0700 (PDT) > Matthew Jacob <mjacob@feral.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? -matt To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-hackers" in the body of the message
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