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 6D35C13877A for ; Thu, 26 Jun 2014 21:36:07 +0000 (UTC) Received: from pigeon.gentoo.org (localhost [127.0.0.1]) by pigeon.gentoo.org (Postfix) with SMTP id 264A4E09AE; Thu, 26 Jun 2014 21:35:53 +0000 (UTC) Received: from mail-we0-f175.google.com (mail-we0-f175.google.com [74.125.82.175]) (using TLSv1 with cipher ECDHE-RSA-RC4-SHA (128/128 bits)) (No client certificate requested) by pigeon.gentoo.org (Postfix) with ESMTPS id 056C7E0867 for ; Thu, 26 Jun 2014 21:35:36 +0000 (UTC) Received: by mail-we0-f175.google.com with SMTP id k48so4373762wev.6 for ; Thu, 26 Jun 2014 14:35:25 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20120113; h=message-id:date:from:user-agent:mime-version:to:subject:references :in-reply-to:content-type:content-transfer-encoding; bh=YZ7fplIUexy6aWyjflXIniUzz1YfBRlxoOhz1bIvkrQ=; b=hQXpNZxPUYwcWCMCb8q0gcQF4JgxLJr2kK3ndkzWvavckcwffptRqqolDLECkCr2zg nmcdmPOpcW3Ema6ugo0da0qBke88opfsN/49V/0qrIA5UtSOFy/nEGunwQowa/nPJTlO n23+4znFVYamHTwUpyWXNzFF6Dl6TejmeTn7xtyh3AMuPC3KO7TXK77m/KMAIgey2Csb MABLAFuvMtdytfTC7aXeTtvqZvHgOxAuhINx0iP7LL3y1Qmyx9d9qJ9B24xLYHvm+aem xIi1c/GdGX581W+kJJq9t6shlw2JIOrhWhQDp6joOhi40U0ygPnCXf+A6oc0KgfX89hT Eq3w== X-Received: by 10.195.17.164 with SMTP id gf4mr20621341wjd.45.1403818525511; Thu, 26 Jun 2014 14:35:25 -0700 (PDT) Received: from [172.20.0.41] (196-210-127-155.dynamic.isadsl.co.za. [196.210.127.155]) by mx.google.com with ESMTPSA id fw4sm28699649wib.19.2014.06.26.14.35.24 for (version=TLSv1 cipher=ECDHE-RSA-RC4-SHA bits=128/128); Thu, 26 Jun 2014 14:35:25 -0700 (PDT) Message-ID: <53AC91ED.6030901@gmail.com> Date: Thu, 26 Jun 2014 23:34:37 +0200 From: Alan McKinnon User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:24.0) Gecko/20100101 Thunderbird/24.6.0 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] Tuneing ext4 for reliability (not necessaryly speed) References: <20140626161348.GA3886@solfire> In-Reply-To: <20140626161348.GA3886@solfire> Content-Type: text/plain; charset=ISO-8859-1 Content-Transfer-Encoding: 7bit X-Archives-Salt: 5f19ffab-5163-4129-b3fd-51dae124085a X-Archives-Hash: 143d6761de90b736899a09eb4dd33ebc On 26/06/2014 18:13, meino.cramer@gmx.de wrote: > > Hi, > > for backup storage (see previous thread) I decided to use ext4. After > craling the net the reports I found about brtfs seemed to mixed to me. > If there are alternatives I overlooked... > > I searched the net for answeres to the following question, but only > found outdated answeres...: > > What options are recommended to set while initializing the filesystem > and later via tune2fs to increase the reliability of the filesystem? > > Thank you very much in advance for any help! :) > Best regards, > mcc There's no option to increase the reliability of the system. The options are all there to match the file system to suit your specific data. Things like number of files vs average size of files, how many inodes will you need, block size, what is your reading and writing profile, do you create and/or delete many files at one time, etc etc There's not much people on this list can do to help you with this beyond explaining how options work. I recommend you get out the ext4 man pages and read them all from beginning to end several times. Then analyse your own data needs and make a decision. -- Alan McKinnon alan.mckinnon@gmail.com