Date: Thu, 7 Dec 2000 19:43:49 +0100 From: Wilko Bulte <wkb@freebie.demon.nl> To: Tom Samplonius <tom@sdf.com> Cc: freebsd-scsi@freebsd.org Subject: Re: Multipath SCSI IO? Message-ID: <20001207194349.B842@freebie.demon.nl> In-Reply-To: <Pine.BSF.4.05.10012062251160.26909-100000@misery.sdf.com>; from tom@sdf.com on Wed, Dec 06, 2000 at 10:55:35PM -0800 References: <Pine.BSF.4.05.10012062251160.26909-100000@misery.sdf.com>
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On Wed, Dec 06, 2000 at 10:55:35PM -0800, Tom Samplonius wrote: > > How difficult would adding multipath support to the SCSI be? I'd like > to be able to access an external storage system using two busses. I've > heard rumours that such a thing is in the works. > > I also wonder whether there is any kind of very unique serial number in > the partition table or disklabel that could be used by such a system for > autoconfiguration. For instance, if the disk at bus 0, target 1 and > the disk at bus 1, target 2 have the same serial number, they must be the > same disk, so use multipath? Or am too much of an optimist? You can get the serial number from a SCSI disk, it is in the VPD pages IIRC. -- Wilko Bulte Arnhem, the Netherlands wilko@freebsd.org http://www.freebsd.org http://www.nlfug.nl To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-scsi" in the body of the message
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