From owner-freebsd-hackers Tue Feb 25 13:27:49 1997 Return-Path: Received: (from root@localhost) by freefall.freebsd.org (8.8.5/8.8.5) id NAA17706 for hackers-outgoing; Tue, 25 Feb 1997 13:27:49 -0800 (PST) Received: from rocky.mt.sri.com (rocky.mt.sri.com [206.127.76.100]) by freefall.freebsd.org (8.8.5/8.8.5) with ESMTP id NAA17691; Tue, 25 Feb 1997 13:27:30 -0800 (PST) Received: (from nate@localhost) by rocky.mt.sri.com (8.7.5/8.7.3) id OAA24299; Tue, 25 Feb 1997 14:27:26 -0700 (MST) Date: Tue, 25 Feb 1997 14:27:26 -0700 (MST) Message-Id: <199702252127.OAA24299@rocky.mt.sri.com> From: Nate Williams MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Transfer-Encoding: 7bit To: se@freebsd.org (Stefan Esser) Cc: nik@blueberry.co.uk (Nik Clayton), hackers@freebsd.org Subject: Re: 2.1.7: ncr and de driver increasingly fickle In-Reply-To: <19970225202622.HX00195@x14.mi.uni-koeln.de> References: <19970225164635.47646@coconut.blueberry.co.uk> <19970225202622.HX00195@x14.mi.uni-koeln.de> Sender: owner-hackers@freebsd.org X-Loop: FreeBSD.org Precedence: bulk > > On my 2.1.5 system, I never heard a complaint from the de driver, and the > > ncr driver might occasionally complain > > > > /kernel: sd1(ncr0:1:0): extraneous data discarded. > > Well, this is not a problem caused by the driver, IMHO ... > > The number of data transfers requested by the target did not > match the transfer count. This normally indicates SCSI cable > problems, since it means either zero or two bytes have been > sent in a previous bus phase. So why did the old driver in 2.1.5 not report this error? (I only get this error in 2.2, and only during bootup). > For synchronous transfers, you may also receive a gross error > in such situations. It is caused by a FIFO over- or underflow > as a result of a lost or doubled byte ... Why would this only happen when I boot the system, and why would it be new to the system? Old kernels don't report/cause this error. Nate