From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from lists.gentoo.org (unknown [208.92.234.80]) by finch.gentoo.org (Postfix) with ESMTP id BA00F1381FA for ; Fri, 16 May 2014 12:53:01 +0000 (UTC) Received: from pigeon.gentoo.org (localhost [127.0.0.1]) by pigeon.gentoo.org (Postfix) with SMTP id 6D6A7E0B66; Fri, 16 May 2014 12:52:56 +0000 (UTC) Received: from postler.lichtfels.com (postler.lichtfels.com [78.46.92.195]) (using TLSv1.2 with cipher AECDH-AES256-SHA (256/256 bits)) (No client certificate requested) by pigeon.gentoo.org (Postfix) with ESMTPS id 2F87EE0AC6 for ; Fri, 16 May 2014 12:52:55 +0000 (UTC) Received: from localhost (localhost [127.0.0.1]) by postler.lichtfels.com (Postfix) with ESMTP id EF7552DC5F for ; Fri, 16 May 2014 14:52:52 +0200 (CEST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=xunil.at; s=mailout; t=1400244773; bh=01ivMjLOTOoMQRLn7jDnFk9Es8nK+lqVg9dVJHwXWU4=; h=Date:From:Reply-To:To:Subject:References:In-Reply-To; b=zk9ywXBMCKl9xZzCtWkgDZREs4WMk8MsqUpCdhKNPEw66UePr1hdaOAWS4baz468t o+x9ojzKBkvCqBrZnB1lN0bHhiwxI40kLotE5EDB+4y4NijnteecTiHD4LgYu8TsFT va08VYynkd9Ztc/h7rxqiWHcG/qWjDFgdcIsmfaE= Received: from postler.lichtfels.com ([127.0.0.1]) by localhost (postler.lichtfels.com [127.0.0.1]) (amavisd-maia, port 10024) with LMTP id 27701-04 for ; Fri, 16 May 2014 14:52:50 +0200 (CEST) Received: from hiro.oops.intern (unknown [IPv6:2001:15c0:65ff:8742:b514:ed62:c106:7d18]) (using TLSv1 with cipher ECDHE-RSA-AES128-SHA (128/128 bits)) (No client certificate requested) by postler.lichtfels.com (Postfix) with ESMTPSA id 2F9352DC43 for ; Fri, 16 May 2014 14:52:49 +0200 (CEST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=xunil.at; s=mailout; t=1400244770; bh=01ivMjLOTOoMQRLn7jDnFk9Es8nK+lqVg9dVJHwXWU4=; h=Date:From:Reply-To:To:Subject:References:In-Reply-To; b=PXvabJjtHBvX/2xQqk6ioTq5xuVeem3bsiGVtwueje3d95wexSDPIQuEcJ/DHzzp/ qHRX6XOmwwwcBkIR8g2Qwx3o8gkkeEaXUVfKEjpMKULBCI3T6zqNCc20H1vm/8gLBn I9fsFFQS6Xl+NYfQsUyU3rkuoWzHX1lyWegN1M6Y= Message-ID: <53760A20.1040205@xunil.at> Date: Fri, 16 May 2014 14:52:48 +0200 From: "Stefan G. Weichinger" Organization: oops! User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:24.0) Gecko/20100101 Thunderbird/24.5.0 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: [gentoo-user] Re: LVM References: <5364C0F9.3000906@xunil.at> <2219291.LPmZhmqkJ1@andromeda> <536545AB.2060008@xunil.at> <53672D31.1030108@xunil.at> <53746809.9080604@xunil.at> <5374855C.4040203@xunil.at> <537506FE.3090701@xunil.at> <5375DE75.7070501@xunil.at> <5375F141.5080704@gmail.com> In-Reply-To: <5375F141.5080704@gmail.com> X-Enigmail-Version: 1.6 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 7bit X-Virus-Scanned: Maia Mailguard 1.0.2c X-Archives-Salt: 2d4d163f-9c6b-4a51-9b15-a0ff0f6e315b X-Archives-Hash: ef08a333279b96666c8bc95b99633204 Am 16.05.2014 13:06, schrieb Alan McKinnon: > LVM is an excellent solution for what it was designed to do, which is to > deal with stuff like this: > > Oops. I misjudged how big /var/log needed to be and now I need to add > 50G to that partition. But it's sda6 and I have up to sda8. Arggghhhhh! > Now I need 5 hour downtime to play 15-pieces with fdisk. > > LVM makes that 2 commands and 12 seconds. Yes, it's a bit complex and > you have to hold the PV/VG/LV model in your head, but it also *fixes* > the issue with rigid MSDOS partition style. > > Modern filesystems like ZFS and btrfs sidestep the need for LVM in a > really elegant and wonderful way, none of which changes the fact that > ZFS/btrfs weren't around when LVM was first coded. exactly. I loved LVM when it was new as it was a way to get the mentioned capability to resize filesystems and underlying "partitions". And I still use it for servers, creating a VG on the mdadm-RAID-array and only providing a part of it for the customers ... if they then fill up their samba-shares with cat pictures I can easily ssh in and give them some more space in a minute ... that is nice to have! OK, I also had some issues with LVM over the years ... but not in a regular way, more when physical volumes got flaky or so. In general it just works for me (and show me one piece of tech where you are guaranteed to not have issues with ...) But sure, now I also think of using btrfs on one of the next fileservers I deliver ... and instead of using rsnapshots to give customers a readonly history of their data there could be btrfs-snapshots. time changes, things develop ... Stefan