From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id ; Wed, 5 Sep 2001 06:46:05 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id ; Wed, 5 Sep 2001 06:45:56 -0400 Received: from mailout05.sul.t-online.com ([194.25.134.82]:17171 "EHLO mailout05.sul.t-online.de") by vger.kernel.org with ESMTP id ; Wed, 5 Sep 2001 06:45:44 -0400 Message-ID: <3B960208.7121318@t-online.de> Date: Wed, 05 Sep 2001 12:44:24 +0200 From: SPATZ1@t-online.de (Frank Schneider) X-Mailer: Mozilla 4.76 [de] (X11; U; Linux 2.4.3-test i686) X-Accept-Language: en MIME-Version: 1.0 To: Antonio Miguel Trindade CC: linux-kernel@vger.kernel.org Subject: Re: aic7xxx errors In-Reply-To: <200109050621.f856LAK00824@ambassador.mathewson.int> <3B95DB22.866EDCA3@mediascape.de> <3B95EA8F.93B27304@t-online.de> <200109051027.f85ARmM10012@polaris.dei.uc.pt> Content-Type: text/plain; charset=us-ascii Content-Transfer-Encoding: 7bit Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org Antonio Miguel Trindade schrieb: > > Em Quarta 05 Setembro 2001 10:04, Frank Schneider escreveu: > > Olaf Zaplinski schrieb: > > > > I had this effect too here (RH7.1, Kernel 2.4.3), but i put it on a > > wrong termination of the LVD Bus...be careful if you have LVD-Drives > > with a "Termination"-Jumper...(e.g. IBM DGHS18V)...this Termination is > > only usable if you use the drive as Single Ended SCSI-UW, *not* if you > > use the drive i a true LVD-environment ! > > > > I learnt this the hard way, because i used this "Termination"-jumper and > > the system bootet without problems and ran about 2 weeks...then the > > above errors occured, followed by system crashes....after reading the > > original ibm-docs, and not the oem-reseller-crap, the reason was clear. > > > > According to IBM specs, _no LVD drive has terminators built-in_... I have > several servers with LVD drives (all IBM) and none of them has terminators, > even in SE mode. You always have to use an external terminator... That was it what i thought too...but if you get a copied sheet from your vendor, and there a jumper is named "Termination on" and the sheet also says you can use this, then you probably think the disk has a LVD-Terminator build-in...although such a terminator is quite simple, some resistors, perhaps a small chip, not more...it would be possible to integrate it in the drive logic... But as said, my DGHS-Disk has a build-in terminator for use with UW-buses...the bad thing is, that if you "terminate" the LVD-bus with this, it seems to work...for some time...i had "/" on it and a part of my /home-RAID5, and it run 2 weeks.... Solong.. Frank. -- Frank Schneider, . Microsoft isn't the answer. Microsoft is the question, and the answer is NO. ... -.-