From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S261356AbVFNVms (ORCPT ); Tue, 14 Jun 2005 17:42:48 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S261355AbVFNVmr (ORCPT ); Tue, 14 Jun 2005 17:42:47 -0400 Received: from frankvm.xs4all.nl ([80.126.170.174]:63141 "EHLO janus.localdomain") by vger.kernel.org with ESMTP id S261353AbVFNVm3 (ORCPT ); Tue, 14 Jun 2005 17:42:29 -0400 Date: Tue, 14 Jun 2005 23:42:26 +0200 From: Frank van Maarseveen To: James Bottomley Cc: Frank van Maarseveen , Gr?goire Favre , dino@in.ibm.com, Andrew Morton , SCSI Mailing List , Linux Kernel Subject: Re: What breaks aic7xxx in post 2.6.12-rc2 ? Message-ID: <20050614214226.GA15560@janus> References: <20050530190716.GA9239@gmail.com> <1118081857.5045.49.camel@mulgrave> <20050607085710.GB9230@gmail.com> <1118590709.4967.6.camel@mulgrave> <20050613145000.GA12057@gmail.com> <1118674783.5079.9.camel@mulgrave> <20050613183719.GA8653@gmail.com> <1118695847.5079.41.camel@mulgrave> <20050613214208.GA7471@janus> <1118703593.5079.56.camel@mulgrave> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <1118703593.5079.56.camel@mulgrave> User-Agent: Mutt/1.4.1i X-Subliminal-Message: Use Linux! Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org On Mon, Jun 13, 2005 at 05:59:53PM -0500, James Bottomley wrote: > On Mon, 2005-06-13 at 23:42 +0200, Frank van Maarseveen wrote: > > kernel: Vendor: WANGTEK Model: 5525ES SCSI Rev: 73F > > kernel: Type: Sequential-Access ANSI SCSI > > revision: 02 > > kernel: target0:0:4: Beginning Domain Validation > > kernel: target0:0:4: Domain Validation skipping write tests > > kernel: scsi0:0:4:0: Attempting to queue an ABORT message > > The aic7xxx error handling is still very unreconstructed and DV takes > the driver through this if there's a mismatch. My best guess is that > like Gr\'egoir's CD-ROM, your wangtek is claiming to support a speed it > cannot. We find this out in DV, but not until we've gone through all > the error paths. The quick fix is simply to set the bios to whatever > the tape eventually configures with (although you'll need the current > patch set to make that work properly). Well, I can't seem to find the right collection of patches applying cleanly on 2.6.12-rc6 and the Adaptec BIOS says "ASYNC". It cannot go below 10MB/s and the tape unit can't go above 3.3 according to /proc/scsi/aic7xxx/0 I think: Target 4 Negotiation Settings User: 6.600MB/s transfers (16bit) Goal: 3.300MB/s transfers Curr: 3.300MB/s transfers Channel A Target 4 Lun 0 Settings Commands Queued 61 Commands Active 0 Command Openings 1 Max Tagged Openings 0 Device Queue Frozen Count 0 So, I'm kind of stuck with a very slow driver initialization. I think it takes much longer than the 30 seconds visible in the logfile, at least that's the impression I have (I'll use a stopwatch next time). -- Frank