From owner-freebsd-current@FreeBSD.ORG Mon Jul 26 19:00:40 2004 Return-Path: Delivered-To: freebsd-current@freebsd.org Received: from mx1.FreeBSD.org (mx1.freebsd.org [216.136.204.125]) by hub.freebsd.org (Postfix) with ESMTP id EFA6E16A4CE for ; Mon, 26 Jul 2004 19:00:40 +0000 (GMT) Received: from postal1.es.net (postal1.es.net [198.128.3.205]) by mx1.FreeBSD.org (Postfix) with ESMTP id ACC3D43D39 for ; Mon, 26 Jul 2004 19:00:40 +0000 (GMT) (envelope-from oberman@es.net) Received: from ptavv.es.net ([198.128.4.29]) by postal1.es.net (Postal Node 1) with ESMTP (SSL) id IBA74465; Mon, 26 Jul 2004 12:00:39 -0700 Received: from ptavv (localhost [127.0.0.1]) by ptavv.es.net (Tachyon Server) with ESMTP id 9A9935D08; Mon, 26 Jul 2004 12:00:39 -0700 (PDT) To: bugghy In-reply-to: Your message of "Mon, 26 Jul 2004 21:53:02 -0000." <1090878779.715.18.camel@illusion.com> Date: Mon, 26 Jul 2004 12:00:39 -0700 From: "Kevin Oberman" Message-Id: <20040726190039.9A9935D08@ptavv.es.net> cc: freebsd-current@freebsd.org Subject: Re: magic sysrq keys functionality X-BeenThere: freebsd-current@freebsd.org X-Mailman-Version: 2.1.1 Precedence: list List-Id: Discussions about the use of FreeBSD-current List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Mon, 26 Jul 2004 19:00:41 -0000 > From: bugghy > Date: Mon, 26 Jul 2004 21:53:02 +0000 > Sender: owner-freebsd-current@freebsd.org > > > > So, what would be a convenient way to protect a 5.x release against > data loss / corruption in case of frequent powerfaillures. (a software > method) Turn off write-cache on the disks. hw.ata.wc="0" in /boot/loader.conf (But be prepared to suffer the consequences to disk performance.) -- R. Kevin Oberman, Network Engineer Energy Sciences Network (ESnet) Ernest O. Lawrence Berkeley National Laboratory (Berkeley Lab) E-mail: oberman@es.net Phone: +1 510 486-8634