From owner-freebsd-questions@FreeBSD.ORG Mon Oct 14 18:08:56 2013 Return-Path: Delivered-To: freebsd-questions@freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [8.8.178.115]) (using TLSv1 with cipher ADH-AES256-SHA (256/256 bits)) (No client certificate requested) by hub.freebsd.org (Postfix) with ESMTP id 7FCBDE1C for ; Mon, 14 Oct 2013 18:08:56 +0000 (UTC) (envelope-from rwmaillists@googlemail.com) Received: from mail-we0-x229.google.com (mail-we0-x229.google.com [IPv6:2a00:1450:400c:c03::229]) (using TLSv1 with cipher ECDHE-RSA-RC4-SHA (128/128 bits)) (No client certificate requested) by mx1.freebsd.org (Postfix) with ESMTPS id 1AC2D2BBD for ; Mon, 14 Oct 2013 18:08:55 +0000 (UTC) Received: by mail-we0-f169.google.com with SMTP id q58so7520292wes.28 for ; Mon, 14 Oct 2013 11:08:54 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=googlemail.com; s=20120113; h=date:from:to:subject:message-id:in-reply-to:references:mime-version :content-type:content-transfer-encoding; bh=YpBJeq/qJEMPZ8ykV+HPWZi9zWnBqzzpe5+dUvTUbKg=; b=HjnbWVUX8T5/eVyawd41NjeAsbQlzrlBM0ysV1j8EPTchInOiY8dj2zAwbGGCFaUPi JA7GHHOeIVEjhVTKY2+ZPdiQDw2cxhoAxYgMegScsaC1TOvwtCkOz4E+bKDw7zxBU3Yg +VVGtDiZ4NMfD+kr6Qoyn/VYscHJO7TO1M/BU3+pCmxeko3zuDb/8elk1a/K+bgnsyL8 wurfnROQQyQYnVBQn11q5TCBfe83rkfAS2/DgLP3qdHztEkrKzCJBQpFvXEVEs0dwc7f eq0af75aHPdOs9ctHOmlxpNVXde5ti9fZQXjOczqMVda672r7vZaMInBxIbycNhkcg50 HnGg== X-Received: by 10.194.201.202 with SMTP id kc10mr30614465wjc.1.1381774134397; Mon, 14 Oct 2013 11:08:54 -0700 (PDT) Received: from gumby.homeunix.com (87-194-105-247.bethere.co.uk. [87.194.105.247]) by mx.google.com with ESMTPSA id ev4sm36604045wib.7.2013.10.14.11.08.53 for (version=SSLv3 cipher=RC4-SHA bits=128/128); Mon, 14 Oct 2013 11:08:54 -0700 (PDT) Date: Mon, 14 Oct 2013 19:08:50 +0100 From: RW To: freebsd-questions@freebsd.org Subject: Re: SU+J Lost files after a power failure Message-ID: <20131014190850.355ecd63@gumby.homeunix.com> In-Reply-To: <525C1D1C.9050708@gmail.com> References: <525A6831.5070402@gmail.com> <20131014133953.58f74659@gumby.homeunix.com> <525C1D1C.9050708@gmail.com> X-Mailer: Claws Mail 3.9.2 (GTK+ 2.24.19; amd64-portbld-freebsd10.0) Mime-Version: 1.0 Content-Type: text/plain; charset=US-ASCII Content-Transfer-Encoding: 7bit X-BeenThere: freebsd-questions@freebsd.org X-Mailman-Version: 2.1.14 Precedence: list List-Id: User questions List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Mon, 14 Oct 2013 18:08:56 -0000 On Mon, 14 Oct 2013 18:34:36 +0200 David Demelier wrote: > On 14.10.2013 14:39, RW wrote: > > If you are having problems with data integrity you might try > > gjournal or zfs instead. > > Why? SU+J is enabled by default. Isn't the purpose of a journaled file > system to ensure that any bad shutdown will protect data? SU+J isn't a journalled filesytem, it's a filesystem with soft-updates that journals information about free space so it can be recovered without having to go through the whole filesystem.