From owner-freebsd-hackers Sat Nov 15 18:37:17 1997 Return-Path: Received: (from root@localhost) by hub.freebsd.org (8.8.7/8.8.7) id SAA11648 for hackers-outgoing; Sat, 15 Nov 1997 18:37:17 -0800 (PST) (envelope-from owner-freebsd-hackers) Received: from seidata.com (seidata.com [206.160.242.33]) by hub.freebsd.org (8.8.7/8.8.7) with ESMTP id SAA11643 for ; Sat, 15 Nov 1997 18:37:06 -0800 (PST) (envelope-from mike@seidata.com) Received: from seidata.com ([208.10.211.44]) by seidata.com (8.8.7/8.8.5) with ESMTP id VAA01548; Sat, 15 Nov 1997 21:37:49 -0500 (EST) Message-ID: <346DB2C6.B13C80EC@seidata.com> Date: Sat, 15 Nov 1997 09:33:42 -0500 From: Mike Hoskins X-Mailer: Mozilla 4.03 [en] (Win95; I) MIME-Version: 1.0 To: bicknell@ufp.org, freebsd-hackers@freebsd.org Subject: Re: AHC / SCSI Problem? References: <199711131520.KAA09225@ussenterprise.ufp.org> Content-Type: text/plain; charset=us-ascii Content-Transfer-Encoding: 7bit Sender: owner-freebsd-hackers@freebsd.org X-Loop: FreeBSD.org Precedence: bulk Leo Bicknell wrote: > We've been having some problems here with FreeBSD, > Adaptec 2940's, and various disk drives. I think we're > I do find it interesting that it happens on the Micropolis > 4221 disks. Perhaps there is something "special" about them. I would like to hear feedback relating to Adaptec's 2940 controller and Micropolis drives myself... What is the status? Are there still any bug(s) being worked out? We're running a dual Pentium Pro 200 with an Adaptec 2940 and two 4221s. Some time ago, we tried the 3.0 SMP kernel and had a serious problem... random reboots. This is a primary DNS box and we've since reverted back to 2.2.5-STABLE for a key feature - reliability. ;) > I have a theory myself that turning on TAGENABLE and > SCBPAGING_ENABLE might actually help this situation, but > I'm not going to try it unless an expert thinks this is a > good idea as well. These are both production machines, so > experimenting is a problem, but if we have some good leads > we can do some work to track this down. TAGENABLE was definately recommended to us (I think it may have even been a BSD team member?), and possibly SCBPAGIN_ENABLE. The powers that be, however, decieded to revert to STABLE until "all SMP problems are ironed out", so we never gave it a try. I've heard that the problems we were encountering have been fixed, but I'd like to be selfish and see if someone else running the same setup gets lucky before I give it a go again. --- Mike Hoskins SEI Data Network Services, Inc. mike@seidata.com