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From: Terry Lambert <terry@lambert.org>
Message-Id: <199510062244.PAA02482@phaeton.artisoft.com>
Subject: Re: 52gig RAID, causes panic
To: gibbs@freefall.freebsd.org (Justin T. Gibbs)
Date: Fri, 6 Oct 1995 15:44:49 -0700 (MST)
Cc: terry@lambert.org, dufault@hda.com, wilko@yedi.iaf.nl,
        henrich@crh.cl.msu.edu, freebsd-hackers@FreeBSD.ORG
In-Reply-To: <199510062214.PAA21649@aslan.cdrom.com> from "Justin T. Gibbs" at Oct 6, 95 03:14:20 pm
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> >What is the interaction between LUN switching, Tagged Queuing, and SCSI
> >disconnect?
> >
> >I'd think it would be. uh, unpleasent.
> 
> Why?  LUN switching is exactly the same as switching targets.

Assuming that completion can be sent.

I think the way Lun switching works with a changer, you don't want
outstanding I/O's when the Lun is switched.  8-).

Might be the same for a RAID, depending on the actual electronics
(one would hope that it wasn't, though...).


					Terry Lambert
					terry@lambert.org
---
Any opinions in this posting are my own and not those of my present
or previous employers.