From owner-freebsd-fs@FreeBSD.ORG Mon Dec 21 15:06:41 2009 Return-Path: Delivered-To: freebsd-fs@freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2001:4f8:fff6::34]) by hub.freebsd.org (Postfix) with ESMTP id 35C1A1065672 for ; Mon, 21 Dec 2009 15:06:41 +0000 (UTC) (envelope-from giffunip@tutopia.com) Received: from web113517.mail.gq1.yahoo.com (web113517.mail.gq1.yahoo.com [98.136.167.57]) by mx1.freebsd.org (Postfix) with SMTP id E94AD8FC1E for ; Mon, 21 Dec 2009 15:06:40 +0000 (UTC) Received: (qmail 48794 invoked by uid 60001); 21 Dec 2009 15:06:40 -0000 Message-ID: <240049.46806.qm@web113517.mail.gq1.yahoo.com> X-YMail-OSG: qbr3iNoVM1k1QGHYooESCmezMlnVStW4babYau8Q8tvB58InYXKZMxfHkBcI67yvaMzc4IxWn1GD3CDIMi.jtloJ6PgROBOK4C9L5NRo.M5XodzOWI8ukorUPQz7ukdwrVmeqmXNySeshHIY7tj16IFWEDNwFADmAzuGIYCtiE_k4J8ybdsOQntIdkAM803BZPZVCbjOxCbTJLv6yc3qVnUzgWgNN3p666dQQYF8L_z9Iq8wKcnysyG8v828LW2gUiRtDFP7vww8OW8n9L9ZrkPcAvts3C9onooVupMJkylBEtrfLrme5MAWjU0VUwby7zzIv3a4JoaJLhaG4MziLA-- Received: from [190.157.123.47] by web113517.mail.gq1.yahoo.com via HTTP; Mon, 21 Dec 2009 07:06:40 PST X-RocketYMMF: giffunip X-Mailer: YahooMailRC/240.3 YahooMailWebService/0.8.100.260964 References: <712903.15604.qm@web113517.mail.gq1.yahoo.com> <3612709F-15CA-4A59-86B1-2674BAA2936D@gmail.com> Date: Mon, 21 Dec 2009 07:06:40 -0800 (PST) From: "Pedro F. Giffuni" To: Nikolay Denev In-Reply-To: <3612709F-15CA-4A59-86B1-2674BAA2936D@gmail.com> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Cc: freebsd-fs@freebsd.org Subject: Re: Plans for Logged/Journaled UFS X-BeenThere: freebsd-fs@freebsd.org X-Mailman-Version: 2.1.5 Precedence: list List-Id: Filesystems List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Mon, 21 Dec 2009 15:06:41 -0000 ----- Original Message ---- > > On Dec 20, 2009, at 8:37 PM, Pedro F. Giffuni wrote: > > > Just wondering... > > > > What's wrong with gjournal(8) ? > > ... > > gjournal(8) journals everything, that is all data and metadata are journaled. > Which can help with random writes, but essentially cuts linear write throughput > in half. > > Regards, > Niki Denev I recall ext3fs also journals everything by default and still is very popular. I am asking because I've been playing a bit with Aditya's ext2fs (mostly UFS1) and one of the ideas there is adding gjournal support instead of starting from scratch. Pedro..