From owner-freebsd-scsi Thu Apr 24 15:39:29 1997 Return-Path: Received: (from root@localhost) by hub.freebsd.org (8.8.5/8.8.5) id PAA06402 for freebsd-scsi-outgoing; Thu, 24 Apr 1997 15:39:29 -0700 (PDT) Received: from iafnl.es.iaf.nl (root@iafnl.es.iaf.nl [195.108.17.20]) by hub.freebsd.org (8.8.5/8.8.5) with SMTP id PAA06394 for ; Thu, 24 Apr 1997 15:39:20 -0700 (PDT) Received: by iafnl.es.iaf.nl with UUCP id AA19238 (5.67b/IDA-1.5 for freebsd-scsi@freebsd.org); Thu, 24 Apr 1997 23:48:02 +0200 Received: (from wilko@localhost) by yedi.iaf.nl (8.7.5/8.6.12) id XAA01106; Thu, 24 Apr 1997 23:04:23 +0200 (MET DST) From: Wilko Bulte Message-Id: <199704242104.XAA01106@yedi.iaf.nl> Subject: Re: Vendor specific ASCQ SCSI errors in 2.2-STABLE To: Alan.Judge@indigo.ie (Alan Judge) Date: Thu, 24 Apr 1997 23:04:23 +0200 (MET DST) Cc: gibbs@plutotech.com, freebsd-scsi@freebsd.org, judgea@indigo.ie In-Reply-To: <199704241511.QAA05458@indigo.ie> from "Alan Judge" at Apr 24, 97 04:11:25 pm X-Mailer: ELM [version 2.4 PL24 ME8a] Mime-Version: 1.0 Content-Type: text/plain; charset=US-ASCII Content-Transfer-Encoding: 7bit Sender: owner-freebsd-scsi@freebsd.org X-Loop: FreeBSD.org Precedence: bulk As Alan Judge wrote... > > >>>>> Wilko Bulte writes: > Wilko> Any chance you can try things without the canisters? > > A lot of work alright, and I'm not sure I want to do that on a > production machine. Bear in mind that I've never seen the same > problem on the other bus (same config --- 4 drives in canisters). Same drives ? > I'll have to do some swapping, since I can't think of any better way > to narrow down which canister. What's the likelihood that the > disk producing the error is in the faulty canister? Hmm. I would not know. > Wilko> How much stublength does each canister introduce? > > Quiet a bit. Maybe 20cm round trip. Hmm. Long.. > Wilko> Are these canisters designed with Ultra SCSI speeds in mind? > > The booklet doesn't mention Ultra, so I'd guess no. Again: Hmmm. Ultra *is* sensitive to marginal busses. Wilko _ ____________________________________________________________________ | / o / / _ Bulte email: wilko@yedi.iaf.nl - Arnhem, The Netherlands |/|/ / / /( (_) Do, or do not. There is no 'try' - Yoda --------------------------------------------------------------------------