From owner-freebsd-geom@FreeBSD.ORG Wed Jul 4 15:15:36 2007 Return-Path: X-Original-To: geom@freebsd.org Delivered-To: freebsd-geom@FreeBSD.ORG Received: from mx1.freebsd.org (mx1.freebsd.org [69.147.83.52]) by hub.freebsd.org (Postfix) with ESMTP id 4E94816A477 for ; Wed, 4 Jul 2007 15:15:36 +0000 (UTC) (envelope-from volker@vwsoft.com) Received: from frontmail.ipactive.de (frontmail.maindns.de [85.214.95.103]) by mx1.freebsd.org (Postfix) with ESMTP id DA84D13C465 for ; Wed, 4 Jul 2007 15:15:35 +0000 (UTC) (envelope-from volker@vwsoft.com) Received: from mail.vtec.ipme.de (Q7c8b.q.ppp-pool.de [89.53.124.139]) (using TLSv1 with cipher DHE-RSA-AES256-SHA (256/256 bits)) (No client certificate requested) by frontmail.ipactive.de (Postfix) with ESMTP id 37E4012883F for ; Wed, 4 Jul 2007 16:56:49 +0200 (CEST) Received: from cesar.sz.vwsoft.com (cesar.sz.vwsoft.com [192.168.16.3]) by mail.vtec.ipme.de (Postfix) with ESMTP id EF0E03F468 for ; Wed, 4 Jul 2007 16:53:22 +0200 (CEST) Message-ID: <468BB473.304@vwsoft.com> Date: Wed, 04 Jul 2007 16:53:39 +0200 From: Volker User-Agent: Thunderbird 2.0.0.4 (X11/20070615) MIME-Version: 1.0 To: geom@freebsd.org X-Enigmail-Version: 0.95.1 Content-Type: text/plain; charset=ISO-8859-1 Content-Transfer-Encoding: 7bit X-VWSoft-MailScanner: Found to be clean X-MailScanner-From: volker@vwsoft.com X-ipactive-MailScanner-Information: Please contact the ISP for more information X-ipactive-MailScanner: Found to be clean X-ipactive-MailScanner-From: volker@vwsoft.com Cc: Subject: gjournal size reservation? X-BeenThere: freebsd-geom@freebsd.org X-Mailman-Version: 2.1.5 Precedence: list List-Id: GEOM-specific discussions and implementations List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Wed, 04 Jul 2007 15:15:36 -0000 hej, I've never played with gjournal before and would like to try it to get protection of the root-fs, var and tmp. I'm wondering if someone can answer these simple questions: 1) As I understand, gjournal does not need to run on a filesystem but is also able to journal a whole slice. What are the pro's and con's for running gjournal on a whole slice or per filesystem? 1a) if journaling per filesystem, is gjournal able to use just one journaling area for more than one filesystem? 2) How much space is required for journaling? I'm having space to get the journal into it's own slice or at least a bsd label. The fsys layout is quite simple: slice 1 (10g) / 2G /tmp 2G /var 4G slice 2 (8g) can be used for spare space and for gjournal but I'm unsure how much space to give gjournal. Thanks! Volker