From: Eric Sandeen Subject: barriers off by default? Date: Mon, 12 May 2008 10:56:21 -0500 Message-ID: <482868A5.1000102@redhat.com> Mime-Version: 1.0 Content-Type: text/plain; charset=ISO-8859-1 Content-Transfer-Encoding: 7bit To: ext4 development Return-path: Received: from mx1.redhat.com ([66.187.233.31]:58404 "EHLO mx1.redhat.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1753284AbYELP43 (ORCPT ); Mon, 12 May 2008 11:56:29 -0400 Received: from int-mx1.corp.redhat.com (int-mx1.corp.redhat.com [172.16.52.254]) by mx1.redhat.com (8.13.8/8.13.8) with ESMTP id m4CFuNDp011858 for ; Mon, 12 May 2008 11:56:28 -0400 Received: from pobox-2.corp.redhat.com (pobox-2.corp.redhat.com [10.11.255.15]) by int-mx1.corp.redhat.com (8.13.1/8.13.1) with ESMTP id m4CFuNbM030648 for ; Mon, 12 May 2008 11:56:23 -0400 Received: from liberator.sandeen.net (sebastian-int.corp.redhat.com [172.16.52.221]) by pobox-2.corp.redhat.com (8.13.1/8.13.1) with ESMTP id m4CFuLu3010070 for ; Mon, 12 May 2008 11:56:22 -0400 Sender: linux-ext4-owner@vger.kernel.org List-ID: As I look at my shiny new 500G disks with 32MB of cache, I find myself wondering why the default for ext3 and ext4 is to have barriers disabled. This is a pretty dangerous default w.r.t. filesystem integrity on power loss, no? Thanks, -Eric