Date: Fri, 06 Oct 1995 15:47:26 -0700 From: "Justin T. Gibbs" <gibbs@freefall.freebsd.org> To: Terry Lambert <terry@lambert.org> Cc: gibbs@freefall.freebsd.org (Justin T. Gibbs), dufault@hda.com, wilko@yedi.iaf.nl, henrich@crh.cl.msu.edu, freebsd-hackers@FreeBSD.ORG Subject: Re: 52gig RAID, causes panic Message-ID: <199510062247.PAA21783@aslan.cdrom.com> In-Reply-To: Your message of "Fri, 06 Oct 1995 15:44:49 PDT." <199510062244.PAA02482@phaeton.artisoft.com>
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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-). Nope. Either the changer will queue the I/O for the other lun, or it will return BUSY status. >Might be the same for a RAID, depending on the actual electronics >(one would hope that it wasn't, though...). I highly doubt it. > Terry Lambert > terry@lambert.org >--- >Any opinions in this posting are my own and not those of my present >or previous employers. -- Justin T. Gibbs =========================================== Software Developer - Walnut Creek CDROM FreeBSD: Turning PCs into workstations ===========================================
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