From owner-freebsd-stable@FreeBSD.ORG Sun Sep 3 14:45:57 2006 Return-Path: X-Original-To: freebsd-stable@freebsd.org 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 7F21E16A4E0 for ; Sun, 3 Sep 2006 14:45:57 +0000 (UTC) (envelope-from bob@immure.com) Received: from flpvm09.prodigy.net (flpvm09.prodigy.net [207.115.20.39]) by mx1.FreeBSD.org (Postfix) with ESMTP id A604143D58 for ; Sun, 3 Sep 2006 14:45:56 +0000 (GMT) (envelope-from bob@immure.com) X-ORBL: [66.136.206.1] Received: from maul.immure.com (adsl-66-136-206-1.dsl.austtx.swbell.net [66.136.206.1]) by flpvm09.prodigy.net (8.13.7 out spool5000 dk/8.13.7) with ESMTP id k83Ejn78028747; Sun, 3 Sep 2006 07:45:50 -0700 Received: from rancor.immure.com (rancor.immure.com [10.1.132.9]) by maul.immure.com (8.13.6/8.13.6) with ESMTP id k83EjlJO092533; Sun, 3 Sep 2006 09:45:47 -0500 (CDT) (envelope-from bob@immure.com) Received: from rancor.immure.com (localhost [127.0.0.1]) by rancor.immure.com (8.13.6/8.13.6) with ESMTP id k83EjlP4076973; Sun, 3 Sep 2006 09:45:47 -0500 (CDT) (envelope-from bob@rancor.immure.com) Received: (from bob@localhost) by rancor.immure.com (8.13.6/8.13.6/Submit) id k83EjkAk076972; Sun, 3 Sep 2006 09:45:46 -0500 (CDT) (envelope-from bob) Date: Sun, 3 Sep 2006 09:45:46 -0500 From: Bob Willcox To: Scott Long Message-ID: <20060903144546.GA76631@rancor.immure.com> References: <20060901164238.GA66726@hugo10.ka.punkt.de> <44F86AB9.9000002@samsco.org> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <44F86AB9.9000002@samsco.org> User-Agent: Mutt/1.5.12-2006-07-14 X-immure-MailScanner-Information: Please contact the ISP for more information X-immure-MailScanner: Found to be clean X-immure-MailScanner-From: bob@immure.com X-Spam-Status: No Cc: freebsd-stable@freebsd.org Subject: Re: LSI/amr driver controller cache problem? X-BeenThere: freebsd-stable@freebsd.org X-Mailman-Version: 2.1.5 Precedence: list Reply-To: Bob Willcox List-Id: Production branch of FreeBSD source code List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Sun, 03 Sep 2006 14:45:57 -0000 On Fri, Sep 01, 2006 at 11:15:37AM -0600, Scott Long wrote: > Patrick M. Hausen wrote: [snip] > > It is very arguably a bug in the LSI firmware if it is actually dumping > its cache when a PCI reset occurs, especially if a battery unit is > present. However, I seriously doubt that you will get anyone at LSI to > listen to this problem. Do you get any messages on the console at > shutdown about the amr driver flushing the cache? Also, check the cache > setting on the drives itself. Maybe the drives are loosing power or > getting reset while data is in their cache. It's bad practice to enable > the write cache on a drive in an RAID array for just this very reason, > but some vendors do it anyways in an attempt to cover up poor > performance. Is there some way to tell if write caching is turned on or not for the drives in the array? In particular, I have an Areca controller (ARC-1210) with 4 SATA drives attached that I would like to check for this on. Bob -- Bob Willcox Possessions increase to fill the space bob@immure.com available for their storage. Austin, TX -- Ryan