From owner-aic7xxx Mon Aug 25 14:20:29 1997 Return-Path: Received: (from root@localhost) by hub.freebsd.org (8.8.7/8.8.7) id OAA10981 for aic7xxx-outgoing; Mon, 25 Aug 1997 14:20:29 -0700 (PDT) Received: from pluto.plutotech.com (root@mail.plutotech.com [206.168.67.137]) by hub.freebsd.org (8.8.7/8.8.7) with ESMTP id OAA10957; Mon, 25 Aug 1997 14:20:19 -0700 (PDT) Received: from narnia.plutotech.com (narnia.plutotech.com [206.168.67.130]) by pluto.plutotech.com (8.8.5/8.8.5) with ESMTP id PAA21647; Mon, 25 Aug 1997 15:19:39 -0600 (MDT) Message-Id: <199708252119.PAA21647@pluto.plutotech.com> X-Mailer: exmh version 2.0zeta 7/24/97 To: Francis Kubala cc: gibbs@freefall.freebsd.org, deischen@iworks.interworks.org, deang@teleport.com, jester@frenzy.com, dkap@barb.bbn.com, dtodd@barb.bbn.com, aic7xxx@freebsd.org Subject: Re: AHA-2940UW problems with Linux driver In-reply-to: Your message of "Mon, 25 Aug 1997 16:50:45 EDT." <199708252050.QAA08426@barb.bbn.com> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Date: Mon, 25 Aug 1997 15:18:12 -0600 From: "Justin T. Gibbs" Sender: owner-aic7xxx@freebsd.org X-Loop: FreeBSD.org Precedence: bulk I've been through a similar debugging effort in the past although in that particular case, it was a SEEK RAID array and the OS was FreeBSD. In the end, it turned out to be a SEEK problem where the Adaptec was queuing so much I/O, so quickly that the SEEK would get bogged down in handling it's internal request queue and either crash or return QUEUE FULL conditions in odd cases. SEEK was unable to reproduce these problems with any other platform/controller pair and insisted that it was a device driver problem. Eventually SEEK admitted it was their fault when the SCSI analyzer traces exonerated the aic7xxx driver. I'll help out where I can in this effort, but as my development platform is FreeBSD, not Linux and the code that I run on a daily basis has diverged to a large extent from what Linux (and FreeBSD current for that matter) run, I may not be able to offer exact fixes. -- Justin T. Gibbs =========================================== FreeBSD: Turning PCs into workstations ===========================================