From owner-freebsd-questions@FreeBSD.ORG Wed Jun 11 17:57:37 2008 Return-Path: Delivered-To: freebsd-questions@FreeBSD.ORG Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2001:4f8:fff6::34]) by hub.freebsd.org (Postfix) with ESMTP id E1B9010656D8 for ; Wed, 11 Jun 2008 17:57:37 +0000 (UTC) (envelope-from olli@lurza.secnetix.de) Received: from lurza.secnetix.de (unknown [IPv6:2a01:170:102f::2]) by mx1.freebsd.org (Postfix) with ESMTP id 3D94D8FC16 for ; Wed, 11 Jun 2008 17:57:37 +0000 (UTC) (envelope-from olli@lurza.secnetix.de) Received: from lurza.secnetix.de (localhost [127.0.0.1]) by lurza.secnetix.de (8.14.1/8.14.1) with ESMTP id m5BHvZsL066361; Wed, 11 Jun 2008 19:57:35 +0200 (CEST) (envelope-from oliver.fromme@secnetix.de) Received: (from olli@localhost) by lurza.secnetix.de (8.14.1/8.14.1/Submit) id m5BHvZXI066360; Wed, 11 Jun 2008 19:57:35 +0200 (CEST) (envelope-from olli) Date: Wed, 11 Jun 2008 19:57:35 +0200 (CEST) Message-Id: <200806111757.m5BHvZXI066360@lurza.secnetix.de> From: Oliver Fromme To: freebsd-questions@FreeBSD.ORG In-Reply-To: <20080609001010.G59013@wojtek.tensor.gdynia.pl> X-Newsgroups: list.freebsd-questions User-Agent: tin/1.8.3-20070201 ("Scotasay") (UNIX) (FreeBSD/6.2-STABLE-20070808 (i386)) MIME-Version: 1.0 Content-Type: text/plain; charset=ISO-8859-1 Content-Transfer-Encoding: 8bit X-Greylist: Sender IP whitelisted, not delayed by milter-greylist-2.1.2 (lurza.secnetix.de [127.0.0.1]); Wed, 11 Jun 2008 19:57:36 +0200 (CEST) Cc: Subject: Re: FreeBSD + ZFS on a production server? X-BeenThere: freebsd-questions@freebsd.org X-Mailman-Version: 2.1.5 Precedence: list Reply-To: freebsd-questions@FreeBSD.ORG List-Id: User questions List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Wed, 11 Jun 2008 17:57:38 -0000 Wojciech Puchar wrote: > 3) a CPU,cache and memory bandwidth hogging "feature" of checksumming all > blocks. thing that are already done in disk hardware. fortunately you can > turn this off Obviously you have been lucky to never be a victim of silent disk corruption (or you just haven't noticed). There are other people who didn't have that much luck, including me. ZFS' checksumming and self-healing is a blessing. If you don't know how it works and call it marketing blah, then I suggest you read up on it a bit. And by the way, it doesn't take any significant amount of CPU power on hardware that is not ancient. I agree that ZFS is not suitable to run on ancient hardware. It isn't designed for that. You're free to use UFS, of course, and keep suffering from its shortcomings. Best regards Oliver -- Oliver Fromme, secnetix GmbH & Co. KG, Marktplatz 29, 85567 Grafing b. M. Handelsregister: Registergericht Muenchen, HRA 74606, Geschäftsfuehrung: secnetix Verwaltungsgesellsch. mbH, Handelsregister: Registergericht Mün- chen, HRB 125758, Geschäftsführer: Maik Bachmann, Olaf Erb, Ralf Gebhart FreeBSD-Dienstleistungen, -Produkte und mehr: http://www.secnetix.de/bsd "Python is an experiment in how much freedom programmers need. Too much freedom and nobody can read another's code; too little and expressiveness is endangered." -- Guido van Rossum