From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from cuda.sgi.com (cuda3.sgi.com [192.48.176.15]) by oss.sgi.com (8.14.3/8.14.3/SuSE Linux 0.8) with ESMTP id n139XnXY051086 for ; Tue, 3 Feb 2009 03:33:49 -0600 Received: from bombadil.infradead.org (localhost [127.0.0.1]) by cuda.sgi.com (Spam Firewall) with ESMTP id 27E2818ACFA9 for ; Tue, 3 Feb 2009 01:33:10 -0800 (PST) Received: from bombadil.infradead.org (bombadil.infradead.org [18.85.46.34]) by cuda.sgi.com with ESMTP id X3fNlJ5LhQvHI6RI for ; Tue, 03 Feb 2009 01:33:10 -0800 (PST) Date: Tue, 3 Feb 2009 04:32:39 -0500 From: Christoph Hellwig Subject: Re: xfs_force_shutdown after Raid crash Message-ID: <20090203093239.GA14963@infradead.org> References: <498376CF.8020806@renderforce.de> <200902030222.47644@zmi.at> <4987B673.8030406@sandeen.net> <200902031022.38583@zmi.at> MIME-Version: 1.0 Content-Disposition: inline In-Reply-To: <200902031022.38583@zmi.at> List-Id: XFS Filesystem from SGI List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Sender: xfs-bounces@oss.sgi.com Errors-To: xfs-bounces@oss.sgi.com To: Michael Monnerie Cc: xfs@oss.sgi.com On Tue, Feb 03, 2009 at 10:22:38AM +0100, Michael Monnerie wrote: > But what about the hard disk cache - should that be disabled? I think in > case of a power failure, they just loose their cache contents, right? So > the battery-backed controller cache only helps himself, the disks will > just throw away up to the 32MB cache they have? Yes. I would hope raid controllers disable the write cache on disks, but for lower end controllers I'm not sure they really do it. _______________________________________________ xfs mailing list xfs@oss.sgi.com http://oss.sgi.com/mailman/listinfo/xfs