From owner-freebsd-geom@FreeBSD.ORG Fri Jul 6 09:25:26 2007 Return-Path: X-Original-To: freebsd-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 7E26816A46D for ; Fri, 6 Jul 2007 09:25:26 +0000 (UTC) (envelope-from gcubfg-freebsd-geom@m.gmane.org) Received: from ciao.gmane.org (main.gmane.org [80.91.229.2]) by mx1.freebsd.org (Postfix) with ESMTP id 0AE0313C4AD for ; Fri, 6 Jul 2007 09:25:25 +0000 (UTC) (envelope-from gcubfg-freebsd-geom@m.gmane.org) Received: from list by ciao.gmane.org with local (Exim 4.43) id 1I6k41-0005dH-OV for freebsd-geom@freebsd.org; Fri, 06 Jul 2007 11:25:21 +0200 Received: from lara.cc.fer.hr ([161.53.72.113]) by main.gmane.org with esmtp (Gmexim 0.1 (Debian)) id 1AlnuQ-0007hv-00 for ; Fri, 06 Jul 2007 11:25:21 +0200 Received: from ivoras by lara.cc.fer.hr with local (Gmexim 0.1 (Debian)) id 1AlnuQ-0007hv-00 for ; Fri, 06 Jul 2007 11:25:21 +0200 X-Injected-Via-Gmane: http://gmane.org/ To: freebsd-geom@freebsd.org From: Ivan Voras Date: Fri, 06 Jul 2007 11:25:13 +0200 Lines: 54 Message-ID: References: <468BB473.304@vwsoft.com> Mime-Version: 1.0 Content-Type: multipart/signed; micalg=pgp-sha1; protocol="application/pgp-signature"; boundary="------------enig30FB7E062D6BCD30B90D44F5" X-Complaints-To: usenet@sea.gmane.org X-Gmane-NNTP-Posting-Host: lara.cc.fer.hr User-Agent: Thunderbird 1.5.0.12 (X11/20060911) In-Reply-To: <468BB473.304@vwsoft.com> X-Enigmail-Version: 0.94.2.0 Sender: news Subject: Re: 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: Fri, 06 Jul 2007 09:25:26 -0000 This is an OpenPGP/MIME signed message (RFC 2440 and 3156) --------------enig30FB7E062D6BCD30B90D44F5 Content-Type: text/plain; charset=UTF-8; format=flowed Content-Transfer-Encoding: quoted-printable Volker wrote: > hej, >=20 > 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: >=20 > 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? In either case the journaling is "per slice", the "on a filesystem" mode = is mostly just a convenience shortcut for the users so they don't need=20 to set a gjournal slice separately. > 1a) if journaling per filesystem, is gjournal able to use just one > journaling area for more than one filesystem? Almose certainly no. > 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. > slice 2 (8g) can be used for spare space and for gjournal but I'm > unsure how much space to give gjournal. The calculation for this involves disk bandwidth multiplied by the=20 "journal flush interval", multiplied by two because there are two=20 journal areas, and it's usually recommended that it should be at least 1 = GB. --------------enig30FB7E062D6BCD30B90D44F5 Content-Type: application/pgp-signature; name="signature.asc" Content-Description: OpenPGP digital signature Content-Disposition: attachment; filename="signature.asc" -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.4.5 (GNU/Linux) Comment: Using GnuPG with SUSE - http://enigmail.mozdev.org iD8DBQFGjgp5ldnAQVacBcgRAp2+AKC7c49cpiGxJ8dVRww7/W99AQSMKwCeJgsp 1zr2+h7Dzh1NnBnAZeQJ4TU= =eGVP -----END PGP SIGNATURE----- --------------enig30FB7E062D6BCD30B90D44F5--