From owner-freebsd-stable@FreeBSD.ORG Wed Apr 6 01:50:06 2005 Return-Path: Delivered-To: freebsd-stable@freebsd.org Received: from mx1.FreeBSD.org (mx1.freebsd.org [216.136.204.125]) by hub.freebsd.org (Postfix) with ESMTP id 34ACC16A4CF for ; Wed, 6 Apr 2005 01:50:06 +0000 (GMT) Received: from FS.denninger.net (wsip-68-15-213-52.at.at.cox.net [68.15.213.52]) by mx1.FreeBSD.org (Postfix) with ESMTP id 7B91B43D39 for ; Wed, 6 Apr 2005 01:50:05 +0000 (GMT) (envelope-from karl@FS.denninger.net) Received: from fs.denninger.net (localhost [127.0.0.1]) by FS.denninger.net (8.13.3/8.13.1) with SMTP id j361o3uP000831 for ; Tue, 5 Apr 2005 20:50:03 -0500 (CDT) (envelope-from karl@FS.denninger.net) Received: from fs.denninger.net [127.0.0.1] by Spamblock-sys; Tue Apr 5 20:50:03 2005 Received: (from karl@localhost) by FS.denninger.net (8.13.3/8.13.1/Submit) id j361o03T000814; Tue, 5 Apr 2005 20:50:00 -0500 (CDT) (envelope-from karl) Message-ID: <20050405205000.A805@denninger.net> Date: Tue, 5 Apr 2005 20:50:00 -0500 From: Karl Denninger To: "Matthew N. Dodd" References: <20050329200841.A772@denninger.net> <20050329233843.L328@sasami.jurai.net> <20050329230830.A3222@denninger.net> <20050329234318.A3883@denninger.net> <20050330210830.A46956@denninger.net> <20050330230046.A68235@denninger.net> <20050331120100.P328@sasami.jurai.net> <20050331110608.A81295@denninger.net> <20050405202504.A6216@denninger.net> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii X-Mailer: Mutt 0.93.2i In-Reply-To: <20050405202504.A6216@denninger.net>; from Karl Denninger on Tue, Apr 05, 2005 at 08:25:04PM -0500 Organization: Karl's Sushi and Packet Smashers X-Die-Spammers: Spammers cheerfully broiled for supper and served with ketchup! cc: freebsd-stable@freebsd.org Subject: Re: DANGER WILL ROBINSON! SERIOUS problem with current 5.4-PRERELEASE - FURTHER UPDATE X-BeenThere: freebsd-stable@freebsd.org X-Mailman-Version: 2.1.1 Precedence: list List-Id: Production branch of FreeBSD source code List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Wed, 06 Apr 2005 01:50:06 -0000 On Tue, Apr 05, 2005 at 08:25:04PM -0500, Karl Denninger wrote: > > This patch appears to be "safe". > > I have about 2 hours on the production machine right now post-rebuild (which > had to complete first) with the added "callout_drain" in, have taken two DMA > WRITE retries, and have not yet seen any evidence of destabilization. > > This is good evidence but not proof - before I took out the original line > the FIRST write retry would immediately cause the system to become unstable. I have forced over a dozen errors (high rate I/O) and still no stability problems. Patch looks good. -- -- Karl Denninger (karl@denninger.net) Internet Consultant & Kids Rights Activist http://www.denninger.net My home on the net - links to everything I do! http://scubaforum.org Your UNCENSORED place to talk about DIVING! http://www.spamcuda.net SPAM FREE mailboxes - FREE FOR A LIMITED TIME! http://genesis3.blogspot.com Musings Of A Sentient Mind