From mboxrd@z Thu Jan 1 00:00:00 1970 From: Stan Hoeppner Subject: Re: RAID5 created by 8 disks works with xfs Date: Mon, 02 Apr 2012 00:43:10 -0500 Message-ID: <4F793C6E.1080000@hardwarefreak.com> References: <4F776492.4070600@hardwarefreak.com> <4F77D0B2.8000809@hardwarefreak.com> <4F77EA55.6090004@hardwarefreak.com> Reply-To: stan@hardwarefreak.com Mime-Version: 1.0 Content-Type: text/plain; charset=ISO-8859-1 Content-Transfer-Encoding: 7bit Return-path: In-Reply-To: Sender: linux-raid-owner@vger.kernel.org To: David Brown Cc: linux-raid@vger.kernel.org List-Id: linux-raid.ids On 4/1/2012 5:33 AM, David Brown wrote: > For an application like this, it would probably make sense to put the > xfs log (and the mdraid bitmap file, if you are using one) on a separate > disk - perhaps a small SSD. XFS only journals metadata changes. Thus an external journal is not needed here as there is no metadata in the workload. -- Stan