From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from lists.gentoo.org (pigeon.gentoo.org [208.92.234.80]) by finch.gentoo.org (Postfix) with ESMTP id 40542138247 for ; Sat, 16 Nov 2013 13:10:45 +0000 (UTC) Received: from pigeon.gentoo.org (localhost [127.0.0.1]) by pigeon.gentoo.org (Postfix) with SMTP id C7430E0AF1; Sat, 16 Nov 2013 13:10:35 +0000 (UTC) Received: from homiemail-a52.g.dreamhost.com (caibbdcaaaaf.dreamhost.com [208.113.200.5]) by pigeon.gentoo.org (Postfix) with ESMTP id B2C78E0AA8 for ; Sat, 16 Nov 2013 13:10:34 +0000 (UTC) Received: from homiemail-a52.g.dreamhost.com (localhost [127.0.0.1]) by homiemail-a52.g.dreamhost.com (Postfix) with ESMTP id 8F90A6B826E for ; Sat, 16 Nov 2013 05:10:32 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha1; c=relaxed; d=libertytrek.org; h= message-id:date:from:mime-version:to:subject:references :in-reply-to:content-type:content-transfer-encoding; s= libertytrek.org; bh=RywCxrQLvXCywPnMZO9P4fn5xKc=; b=Kh3Tdp4+BgCV 10pCJ8fL/HacWC38v3fwiR9GT8L2czTel7MUfi3WEgtFmoT0qNiJs5cjxRGUrhVz mguUaZuU67EdbN0NahvAb79dT+0mKf2OexU6JaqEfl81kxoUbld2PWUqycTJLlrr buZvU2y09mCcVKf2/A65cLpGno6g/ZE= Received: from [127.0.0.1] (unknown [159.63.145.2]) (using TLSv1 with cipher DHE-RSA-AES256-SHA (256/256 bits)) (No client certificate requested) (Authenticated sender: tanstaafl@libertytrek.org) by homiemail-a52.g.dreamhost.com (Postfix) with ESMTPSA id 5B8A26B80E8 for ; Sat, 16 Nov 2013 05:10:32 -0800 (PST) Message-ID: <52876EAC.1080501@libertytrek.org> Date: Sat, 16 Nov 2013 08:10:04 -0500 From: Tanstaafl User-Agent: Mozilla/5.0 (Windows NT 5.1; rv:24.0) Gecko/20100101 Thunderbird/24.1.0 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 To: gentoo-user@lists.gentoo.org Subject: Re: [gentoo-user] USE ruby_targets_ruby20 References: <52867199.7060801@libertytrek.org> <528698F7.2020900@libertytrek.org> <52869DB0.7040606@gmail.com> In-Reply-To: <52869DB0.7040606@gmail.com> Content-Type: text/plain; charset=ISO-8859-1; format=flowed Content-Transfer-Encoding: 7bit X-Archives-Salt: 5e9e9994-2c53-43ae-89ab-ea3e32e1e33d X-Archives-Hash: 2c142a47b46f8307816ff47ade9252d9 On 2013-11-15 5:18 PM, Alan McKinnon wrote: > On 15/11/2013 23:58, Tanstaafl wrote: >> Now, the question is, what the heck is thin-provisioning in lvm2, am I >> using it, and if not, do I need it? >> >> I'm pretty sure I'm not using it, but how to be sure? > Google for "thin-provisioning+in+lvm2", first three hits. > > In a nutshell, you can define an LV without actually allocating the > storage yet that you are not using, it gets allocated "on demand" if you > will. > > It's similar in concept to the general idea behind sparse files, lazy > initialization, fixed size vs dynamically allocated disks for VMs and do > on: allocate a resource only when you need it. > > This lets you over-commit storage space as much of it is not being used > in practice. > > If you use thin provisioning, you already know it. There are steps you > must take to put it to use. Thanks Alan... But fyi, my last questions were more just me talking to myself... of course my google-fu is fairly strong, and like you I found all of my answers this morning when I searched... I chose not to use thin provisioning in vmWare because I just don't like the idea... maybe irrational, because I do see the advantages. I'd be curious to learn if anyone here uses it with lvm, and what their experience has been - especially, are there any gotcha's to watch out for? But for now, to rebuild my kernels without lvm thin provisioning (it is enabled) and emerge -C thin-provisioning-tools...