From owner-freebsd-geom@FreeBSD.ORG Thu Aug 10 19:07:03 2006 Return-Path: X-Original-To: freebsd-geom@FreeBSD.org Delivered-To: freebsd-geom@FreeBSD.org Received: from mx1.FreeBSD.org (mx1.freebsd.org [216.136.204.125]) by hub.freebsd.org (Postfix) with ESMTP id 11AD016A4DF; Thu, 10 Aug 2006 19:07:03 +0000 (UTC) (envelope-from anderson@centtech.com) Received: from mh2.centtech.com (moat3.centtech.com [207.200.51.50]) by mx1.FreeBSD.org (Postfix) with ESMTP id A4BD643D49; Thu, 10 Aug 2006 19:07:02 +0000 (GMT) (envelope-from anderson@centtech.com) Received: from [10.177.171.220] (neutrino.centtech.com [10.177.171.220]) by mh2.centtech.com (8.13.1/8.13.1) with ESMTP id k7AJ714T017972; Thu, 10 Aug 2006 14:07:01 -0500 (CDT) (envelope-from anderson@centtech.com) Message-ID: <44DB83E9.2090402@centtech.com> Date: Thu, 10 Aug 2006 14:07:21 -0500 From: Eric Anderson User-Agent: Thunderbird 1.5.0.5 (X11/20060802) MIME-Version: 1.0 To: Craig Boston , Pawel Jakub Dawidek , freebsd-fs@FreeBSD.org, freebsd-geom@FreeBSD.org References: <20060808195202.GA1564@garage.freebsd.pl> <20060810184702.GA8567@nowhere> In-Reply-To: <20060810184702.GA8567@nowhere> Content-Type: text/plain; charset=ISO-8859-1; format=flowed Content-Transfer-Encoding: 7bit X-Virus-Scanned: ClamAV 0.87.1/1644/Wed Aug 9 22:55:42 2006 on mh2.centtech.com X-Virus-Status: Clean Cc: Subject: Re: GJournal (hopefully) final patches. 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: Thu, 10 Aug 2006 19:07:03 -0000 On 08/10/06 13:47, Craig Boston wrote: > Hi, > > It's great to see this project so close to completion! I'm trying it > out on a couple machines to see how it goes. > > A few comments and questions: > > * It took me a little by surprise that it carves 1G out of the device > for the journal. Depending on the size of the device that can be a > pretty hefty price to pay (and I didn't see any mention of it in the > setup notes). For a couple of my smaller filesystems I reduced it to > 512MB. Perhaps some algorithm for auto-sizing the journal based on > the size / expected workload of the device would be in order? The size of the journal is related to the write speed of the journeled device and the journal swap time (default 10 seconds). Eric -- ------------------------------------------------------------------------ Eric Anderson Sr. Systems Administrator Centaur Technology Anything that works is better than anything that doesn't. ------------------------------------------------------------------------