From owner-cvs-all Mon Oct 12 11:57:59 1998 Return-Path: Received: (from majordom@localhost) by hub.freebsd.org (8.8.8/8.8.8) id LAA13223 for cvs-all-outgoing; Mon, 12 Oct 1998 11:57:59 -0700 (PDT) (envelope-from owner-cvs-all@FreeBSD.ORG) Received: from panzer.plutotech.com (panzer.plutotech.com [206.168.67.125]) by hub.freebsd.org (8.8.8/8.8.8) with ESMTP id LAA13215; Mon, 12 Oct 1998 11:57:55 -0700 (PDT) (envelope-from ken@panzer.plutotech.com) Received: (from ken@localhost) by panzer.plutotech.com (8.9.1/8.8.5) id MAA25903; Mon, 12 Oct 1998 12:57:34 -0600 (MDT) From: "Kenneth D. Merry" Message-Id: <199810121857.MAA25903@panzer.plutotech.com> Subject: Re: cvs commit: src/sys/cam/scsi scsi_da.c In-Reply-To: <199810121809.LAA07119@dingo.cdrom.com> from Mike Smith at "Oct 12, 98 11:09:54 am" To: mike@smith.net.au (Mike Smith) Date: Mon, 12 Oct 1998 12:57:34 -0600 (MDT) Cc: cvs-committers@FreeBSD.ORG, cvs-all@FreeBSD.ORG X-Mailer: ELM [version 2.4ME+ PL28s (25)] MIME-Version: 1.0 Content-Type: text/plain; charset=US-ASCII Content-Transfer-Encoding: 7bit Sender: owner-cvs-all@FreeBSD.ORG Precedence: bulk Mike Smith wrote... > > I think what this is telling us is that attempting to use anything other > than the least common denominator as the default is a Bad Idea. > > Don't kid yourselves folks; you're not going to manage to add quirk > entries for all the drives and firmware revisions that screw up royally > when you try to do fancy things to them. Better to add quirk entries > for the drives that get it _right_. > > Shipping a release with this sort of dangerous behaviour enabled is > going to be a support _nightmare_. I realise you folks aren't in the > support firing line, but for the sake of those that are, not to mention > the extremely negative publicity this sort of problem will cause, please > consider turning it off. Somehow I'm not surprised that someone responded to that commit with a "sky is falling" message. I wish people would be a little slower with the knee-jerk reactions. Cache sync has been turned on in the DA driver for a very long time now (since the first revision, June 27th, 1997) and there have been very few problems with it. By far, most drives out there do something reasonable when they get this command. I think there are plenty of other things in -current that are much more likely to cause support nightmares and bad publicity. Ken -- Kenneth Merry ken@plutotech.com To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe cvs-all" in the body of the message