From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from mx0a-00082601.pphosted.com ([67.231.145.42]:55286 "EHLO mx0a-00082601.pphosted.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751855AbdAWXUd (ORCPT ); Mon, 23 Jan 2017 18:20:33 -0500 Date: Mon, 23 Jan 2017 18:18:09 -0500 From: Chris Mason To: Christoph Anton Mitterer CC: Subject: Re: RAID56 status? Message-ID: <20170123231809.GA9114@clm-mbp.masoncoding.com> References: <1485124549.6187.36.camel@scientia.net> <20170122223906.GA24076@carfax.org.uk> <3e9fe326-7638-bc78-4fe8-f6f6851769d7@jvales.net> <35d49fbd-102c-3e54-4e40-5f71fb88d2da@cn.fujitsu.com> <1485194001.21584.1.camel@scientia.net> MIME-Version: 1.0 Content-Type: text/plain; charset="us-ascii"; format=flowed In-Reply-To: <1485194001.21584.1.camel@scientia.net> Sender: linux-btrfs-owner@vger.kernel.org List-ID: On Mon, Jan 23, 2017 at 06:53:21PM +0100, Christoph Anton Mitterer wrote: >Just wondered... is there any larger known RAID56 deployment? I mean >something with real-world production systems and ideally many different > IO scenarios, failures, pulling disks randomly and perhaps even so >many disks that it's also likely to hit something like silent data >corruption (on the disk level)? > >Has CM already migrated all of Facebook's storage to btrfs RAID56?! ;-) >Well at least facebook.com seems till online ;-P *kidding* > >I mean the good thing in having such a massive production-like >environment - especially when it's not just one homogeneous usage >pattern - is that it would help to build up quite some trust into the >code (once the already known bugs are fixed). We've been focusing on the single-drive use cases internally. This year that's changing as we ramp up more users in different places. Performance/stability work and raid5/6 are the top of my list right now. -chris