From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from pigeon.gentoo.org ([208.92.234.80] helo=lists.gentoo.org) by finch.gentoo.org with esmtp (Exim 4.60) (envelope-from ) id 1NfADA-0002AV-KQ for garchives@archives.gentoo.org; Wed, 10 Feb 2010 10:54:24 +0000 Received: from pigeon.gentoo.org (localhost [127.0.0.1]) by pigeon.gentoo.org (Postfix) with SMTP id 75F50E0946; Wed, 10 Feb 2010 10:53:59 +0000 (UTC) Received: from smtpq4.gn.mail.iss.as9143.net (smtpq4.gn.mail.iss.as9143.net [212.54.34.167]) by pigeon.gentoo.org (Postfix) with ESMTP id 2D12AE0946 for ; Wed, 10 Feb 2010 10:53:59 +0000 (UTC) Received: from [212.54.34.142] (helo=smtp11.gn.mail.iss.as9143.net) by smtpq4.gn.mail.iss.as9143.net with esmtp (Exim 4.69) (envelope-from ) id 1NfACk-0004SX-OW for gentoo-user@lists.gentoo.org; Wed, 10 Feb 2010 11:53:58 +0100 Received: from 5353258a.cable.casema.nl ([83.83.37.138] helo=data.hosts.antarean.org) by smtp11.gn.mail.iss.as9143.net with esmtp (Exim 4.69) (envelope-from ) id 1NfACj-0007d6-Ay for gentoo-user@lists.gentoo.org; Wed, 10 Feb 2010 11:53:57 +0100 Received: from localhost (localhost [127.0.0.1]) by data.hosts.antarean.org (Postfix) with ESMTP id 9FB3527EE4 for ; Wed, 10 Feb 2010 11:53:56 +0100 (CET) X-Virus-Scanned: amavisd-new at antarean.org Received: from data.hosts.antarean.org ([127.0.0.1]) by localhost (data.hosts.antarean.org [127.0.0.1]) (amavisd-new, port 10024) with ESMTP id VeL4lxzJ+IUr for ; Wed, 10 Feb 2010 11:53:56 +0100 (CET) Received: from eve.localnet (eve.hosts.antarean.org [10.1.5.100]) (using TLSv1 with cipher DHE-RSA-AES256-SHA (256/256 bits)) (No client certificate requested) by data.hosts.antarean.org (Postfix) with ESMTPS id 8525024C27 for ; Wed, 10 Feb 2010 11:53:56 +0100 (CET) From: "J. Roeleveld" To: gentoo-user@lists.gentoo.org Subject: Re: [gentoo-user] 1-Terabyte drives - 4K sector sizes? -> bar performance so far Date: Wed, 10 Feb 2010 11:53:56 +0100 User-Agent: KMail/1.12.3 (Linux/2.6.30-gentoo-r5; KDE/4.3.3; x86_64; ; ) References: <5bdc1c8b1002070827i14f59047k39a695900ebe9889@mail.gmail.com> <201002090847.40385.joost@antarean.org> <1265757751.3193.23.camel@localhost> In-Reply-To: <1265757751.3193.23.camel@localhost> Precedence: bulk List-Post: List-Help: List-Unsubscribe: List-Subscribe: List-Id: Gentoo Linux mail X-BeenThere: gentoo-user@lists.gentoo.org Reply-to: gentoo-user@lists.gentoo.org MIME-Version: 1.0 Content-Type: Text/Plain; charset="iso-8859-1" Content-Transfer-Encoding: 7bit Message-Id: <201002101153.56157.joost@antarean.org> X-ZiggoSMTP-MailScanner-Information: Please contact the ISP for more information X-ZiggoSMTP-MailScanner-ID: 1NfACj-0007d6-Ay X-ZiggoSMTP-MailScanner: Found to be clean X-ZiggoSMTP-MailScanner-SpamCheck: geen spam, SpamAssassin (niet cached, score=-2.599, vereist 5, autolearn=not spam, BAYES_00 -2.60) X-ZiggoSMTP-MailScanner-From: joost@antarean.org X-Spam-Status: No X-Archives-Salt: 86326134-6e4f-4f75-9443-919d21b6fcae X-Archives-Hash: 4e025255e6581360cd6b10333c4b466b On Wednesday 10 February 2010 00:22:31 Iain Buchanan wrote: > On Tue, 2010-02-09 at 08:47 +0100, J. Roeleveld wrote: > > I now only need to figure out the best way to configure LVM over this to > > get the best performance from it. Does anyone know of a decent way of > > figuring this out? > > I got 6 disks in Raid-5. > > why LVM? Planning on changing partition size later? LVM is good for > (but not limited to) non-raid setups where you want one partition over a > number of disks. > > If you have RAID 5 however, don't you just get one large disk out of it? > In which case you could just create x partitions. You can always use > parted to resize / move them later. > > IMHO recovery from tiny boot disks is easier without LVM too. > I've been using LVM for quite a while now and prefer it over any existing partitioning method. Especially as this array is for filesharing and I prefer to keep different shares on different partitions and the requirements for sizes are not known at the beginning. Also, the machine this is in uses Xen virtualisation to consolidate different servers on a single machine (power-consumption and most servers only need a lot of resources occasionally) and I already have over 80 LVs just for the virtual machines themselves. (multiple each, as I don't like a single large partition for any machine) As for recovery, I always use "sysrescuecd" (http://www.sysresccd.org) and this has Raid and LVM support in it. (Same with the Gentoo-livecds) -- Joost