From owner-freebsd-stable@FreeBSD.ORG Wed Sep 13 17:15:40 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 D026716A4B3 for ; Wed, 13 Sep 2006 17:15:40 +0000 (UTC) (envelope-from olli@lurza.secnetix.de) Received: from lurza.secnetix.de (lurza.secnetix.de [83.120.8.8]) by mx1.FreeBSD.org (Postfix) with ESMTP id DAFFD43DAC for ; Wed, 13 Sep 2006 17:15:23 +0000 (GMT) (envelope-from olli@lurza.secnetix.de) Received: from lurza.secnetix.de (uxoxqv@localhost [127.0.0.1]) by lurza.secnetix.de (8.13.4/8.13.4) with ESMTP id k8DHFGnS090765; Wed, 13 Sep 2006 19:15:22 +0200 (CEST) (envelope-from oliver.fromme@secnetix.de) Received: (from olli@localhost) by lurza.secnetix.de (8.13.4/8.13.1/Submit) id k8DHFGKK090764; Wed, 13 Sep 2006 19:15:16 +0200 (CEST) (envelope-from olli) Date: Wed, 13 Sep 2006 19:15:16 +0200 (CEST) Message-Id: <200609131715.k8DHFGKK090764@lurza.secnetix.de> From: Oliver Fromme To: freebsd-stable@FreeBSD.ORG, bsd@kuehlbox.de In-Reply-To: <450823B1.2090809@kuehlbox.de> X-Newsgroups: list.freebsd-stable User-Agent: tin/1.8.0-20051224 ("Ronay") (UNIX) (FreeBSD/4.11-STABLE (i386)) X-Greylist: Sender IP whitelisted, not delayed by milter-greylist-2.1.2 (lurza.secnetix.de [127.0.0.1]); Wed, 13 Sep 2006 19:15:22 +0200 (CEST) Cc: Subject: Re: gjournal and Softupdates X-BeenThere: freebsd-stable@freebsd.org X-Mailman-Version: 2.1.5 Precedence: list Reply-To: freebsd-stable@FreeBSD.ORG, bsd@kuehlbox.de List-Id: Production branch of FreeBSD source code List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Wed, 13 Sep 2006 17:15:40 -0000 Teufel wrote: > so when the crash occur exactly when BIO_FLUSH is sent or while the > cache is flushing, there is still no corruption possbile? A small additional note ... If there's a _hardware_ crash (e.g. power outage) which causes a track write of the HDD to be interrupted, you will get corruption. There is *no* file system that protects you from such damage, except probably Sun's ZFS in a mirror configuration (because of its COW, checksumming and self-healing features). Best regards Oliver -- Oliver Fromme, secnetix GmbH & Co. KG, Marktplatz 29, 85567 Grafing Dienstleistungen mit Schwerpunkt FreeBSD: http://www.secnetix.de/bsd Any opinions expressed in this message may be personal to the author and may not necessarily reflect the opinions of secnetix in any way. Perl is worse than Python because people wanted it worse. -- Larry Wall