From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from mondschein.lichtvoll.de ([194.150.191.11]:59869 "EHLO mail.lichtvoll.de" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751493AbaHJR00 convert rfc822-to-8bit (ORCPT ); Sun, 10 Aug 2014 13:26:26 -0400 From: Martin Steigerwald To: Peter Waller Cc: Chris Samuel , linux-btrfs@vger.kernel.org Subject: Re: ENOSPC with mkdir and rename Date: Sun, 10 Aug 2014 19:26:25 +0200 Message-ID: <2485127.sKlMmAdHLi@merkaba> In-Reply-To: References: <17833067.mzxAL4oqZq@quad> MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" Sender: linux-btrfs-owner@vger.kernel.org List-ID: Am Montag, 4. August 2014, 11:09:23 schrieb Peter Waller: > On 4 August 2014 10:39, Chris Samuel wrote: > > On Mon, 4 Aug 2014 09:14:19 AM Peter Waller wrote: > >> All of this is *very* surprising. > > > > Hmm, it shouldn't be, the ENOSPC issues are well known and have been > > discussed here for years. > > I accept that. It's all very well if you read the BTRFS list and/or > are a BTRFS developer. But if you're trying to work it out in the heat > of battle, as we have sysadmins who would have to, there is a > combination of things here that makes it unreasonable and harmful for > production. Well, maybe, just maybe… BTRFS is not yet ready for production use. I installed it on a server recently, my own VM. And I am expect that I may need to fix up things there. And I did it with a *huge* free space margin. And still running Debian backport kernel 3.14. Won´t change it to 3.16 until I have seen that it runs nicely on my laptop again. Test it on non critical servers – yes. Use it on critical production servers? My answer is a no for this. Despite partial support in SLES 11 SP 2 and support (partial?) for it in Oracle Unbreakable Linux. BTRFS is just not yet there from my current experiences with it. One thing that may get you covered up usually: Make it five times as large as the data you put on it and try to monitor for situation you better rebalance in advance. -- Martin 'Helios' Steigerwald - http://www.Lichtvoll.de GPG: 03B0 0D6C 0040 0710 4AFA B82F 991B EAAC A599 84C7