From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1752993Ab3IOTT6 (ORCPT ); Sun, 15 Sep 2013 15:19:58 -0400 Received: from hibox-130.abo.fi ([130.232.216.130]:55301 "EHLO centre.hibox.fi" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1752212Ab3IOTT5 (ORCPT ); Sun, 15 Sep 2013 15:19:57 -0400 Message-ID: <5236084D.3060509@hibox.fi> Date: Sun, 15 Sep 2013 22:19:41 +0300 From: Marcus Sundman User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:17.0) Gecko/20130803 Thunderbird/17.0.8 MIME-Version: 1.0 To: "Theodore Ts'o" , Jan Kara , Dave Chinner , linux-kernel@vger.kernel.org Subject: Re: Debugging system freezes on filesystem writes References: <20130224012052.GC1196@thunk.org> <512D01E0.7010009@hibox.fi> <20130226231703.GA22674@quack.suse.cz> <5231BA3C.2090704@hibox.fi> <20130912131051.GA14664@quack.suse.cz> <5231C5FF.3060504@hibox.fi> <20130912143941.GB14664@quack.suse.cz> <5231D8DD.5010703@hibox.fi> <20130912163530.GD14664@quack.suse.cz> <523200EB.7000202@hibox.fi> <20130914024108.GA10740@thunk.org> In-Reply-To: <20130914024108.GA10740@thunk.org> Content-Type: text/plain; charset=ISO-8859-1; format=flowed Content-Transfer-Encoding: 7bit X-Spam_score: -2.7 X-Spam_bar: -- Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On 14.09.2013 05:41, Theodore Ts'o wrote: > On Thu, Sep 12, 2013 at 08:59:07PM +0300, Marcus Sundman wrote: >> At 128 GB it is extremely small as it is, and I'm really struggling >> to fit all on it. Most of my stuff is on my NAS (which has almost 10 >> TB space), but still I need several code repositories and the >> development environment and a virtual machine etc on this tiny 128 >> GB thing. >> >> So, if I used some other filesystem, might that allow me to use a >> larger portion of the SSD without this degradation? Or with a much >> slower rate of degradation? > What model are you using? It's possible that your flash device was > designed as a cache driver for windows. As such, it might have been > optimized for a read-mostly workload and not something for a lot of > random small writes. It's a SanDisk SSD U100. > The f2fs file system is designed for crappy flash drives with crappy > FTL's, so it might work be better for you. OK, I'll probably try it when I have time to switch. > But let me ask you this > --- how much is your data worth? How much would it cost to replace > your flash device with something better? A lot. I have lsyncd running here most of the time, backing up to my raid-z NAS which in turn uses a versioned off-site backup system. Anyway, this is an Asus ZenBook computer and can't be opened. Well, it can, but that will void the warranty at the very least. - Marcus