From owner-freebsd-current@FreeBSD.ORG Wed Aug 31 17:34:41 2011 Return-Path: Delivered-To: freebsd-current@freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2001:4f8:fff6::34]) by hub.freebsd.org (Postfix) with ESMTP id 44ACF1065809 for ; Wed, 31 Aug 2011 17:34:41 +0000 (UTC) (envelope-from ohartman@zedat.fu-berlin.de) Received: from outpost1.zedat.fu-berlin.de (outpost1.zedat.fu-berlin.de [130.133.4.66]) by mx1.freebsd.org (Postfix) with ESMTP id 0362F8FC0A for ; Wed, 31 Aug 2011 17:34:40 +0000 (UTC) Received: from inpost2.zedat.fu-berlin.de ([130.133.4.69]) by outpost1.zedat.fu-berlin.de (Exim 4.69) for freebsd-current@freebsd.org with esmtp (envelope-from ) id <1QyogS-0001WI-5q>; Wed, 31 Aug 2011 19:34:40 +0200 Received: from e178023043.adsl.alicedsl.de ([85.178.23.43] helo=thor.walstatt.dyndns.org) by inpost2.zedat.fu-berlin.de (Exim 4.69) for freebsd-current@freebsd.org with esmtpsa (envelope-from ) id <1QyogS-0000LT-2x>; Wed, 31 Aug 2011 19:34:40 +0200 Message-ID: <4E5E70AF.2080806@zedat.fu-berlin.de> Date: Wed, 31 Aug 2011 19:34:39 +0200 From: "Hartmann, O." User-Agent: Mozilla/5.0 (X11; FreeBSD amd64; rv:6.0) Gecko/20110825 Thunderbird/6.0 To: freebsd-current Content-Transfer-Encoding: 7bit X-Originating-IP: 85.178.23.43 MIME-Version: 1.0 Content-Type: text/plain; charset="ISO-8859-1" X-Content-Filtered-By: Mailman/MimeDel 2.1.5 Subject: howto: enabling journaling on softupdates X-BeenThere: freebsd-current@freebsd.org X-Mailman-Version: 2.1.5 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: Wed, 31 Aug 2011 17:34:41 -0000 I try to find a suitable reading/howto for how to enable softupdates on UFS2 filesystems. As I could see, SU+J is enlisted to be enabled by default in 9.0-RELEASE. What is the status quo of that? I've several active systems running UFS2 on their system disks while data/home/mass storage is ZFS. Are their any issue with SU+J? well, the captitalized letters confused me first time, since the first newfs-option I hit was "-J", the option for enabling softupdate via GEOM gjournal. Is there any special preparation to bring up an existing filesystem securely into journaling? As I read the blogs and emails in the list, it should be as simple as booting into single user mode, enabling on all partitions in question (even / ?) via -j softupdate-journaling, runing a foreground fsck, reboot ... that's it? Or is there any other additional preparation like mentioned in gjournal (async mount)? Thanks for patience and repsonding, Oliver