From owner-freebsd-stable@FreeBSD.ORG Tue Sep 12 08:22:02 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 2185416A416 for ; Tue, 12 Sep 2006 08:22:02 +0000 (UTC) (envelope-from bsd@kuehlbox.de) Received: from samael.qmail-ldap.de (mail.kuehlbox.de [62.159.47.22]) by mx1.FreeBSD.org (Postfix) with ESMTP id 8BA0B43D4C for ; Tue, 12 Sep 2006 08:22:01 +0000 (GMT) (envelope-from bsd@kuehlbox.de) Received: (qmail 79987 invoked from network); 12 Sep 2006 08:21:59 -0000 Received: from unknown (HELO [10.0.47.117]) (webmaster@kuehlbox.de@[62.159.47.1]) (envelope-sender ) by samael.qmail-ldap.de (qmail-ldap-1.03) with AES256-SHA encrypted SMTP for ; 12 Sep 2006 08:21:59 -0000 Message-ID: <45066E19.2040405@kuehlbox.de> Date: Tue, 12 Sep 2006 10:21:45 +0200 From: "bsd@kuehlbox.de" User-Agent: Thunderbird 1.5.0.5 (Windows/20060719) MIME-Version: 1.0 To: freebsd-stable@FreeBSD.org Content-Type: text/plain; charset=ISO-8859-1; format=flowed Content-Transfer-Encoding: 7bit Cc: Subject: gjournal and Softupdates X-BeenThere: freebsd-stable@freebsd.org X-Mailman-Version: 2.1.5 Precedence: list List-Id: Production branch of FreeBSD source code List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Tue, 12 Sep 2006 08:22:02 -0000 I've just watched over some of the gjournal threads. My main question now is, whats the difference from gjournal and softupdates in case of reability ? Wasn't SU design to make the use of journals needless? As far i remember, SU was designed to write in the cache in such a way, that whenever the system crashed, the FS is always consistent. Only bgfsck has todo a snapshot and cleanup "unused" space that got lost cause the SU did not finish as the crash occured. Maybe someone can give me some light into that :). I always tought that *BSD don't need a journaling FS as it has already SU Greetings Teufel