From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from relay.sgi.com (relay2.corp.sgi.com [137.38.102.29]) by oss.sgi.com (Postfix) with ESMTP id AD9467F47 for ; Sun, 22 Feb 2015 17:35:27 -0600 (CST) Received: from cuda.sgi.com (cuda3.sgi.com [192.48.176.15]) by relay2.corp.sgi.com (Postfix) with ESMTP id 9C55C304043 for ; Sun, 22 Feb 2015 15:35:24 -0800 (PST) Received: from mail-qg0-f46.google.com (mail-qg0-f46.google.com [209.85.192.46]) by cuda.sgi.com with ESMTP id 8xh9jaU38TiBLy0q (version=TLSv1 cipher=RC4-SHA bits=128 verify=NO) for ; Sun, 22 Feb 2015 15:35:22 -0800 (PST) Received: by mail-qg0-f46.google.com with SMTP id z107so22000727qgd.5 for ; Sun, 22 Feb 2015 15:35:22 -0800 (PST) Message-ID: <54EA67B7.30805@binghamton.edu> Date: Sun, 22 Feb 2015 18:35:19 -0500 From: Dave Hall MIME-Version: 1.0 Subject: XFS/LVM/Multipath on a single RAID volume References: <5143F94C.1020708@hardwarefreak.com> <20130316072126.GG6369@dastard> <515082C3.2000006@binghamton.edu> <515361B5.8050603@hardwarefreak.com> <5155F2B2.1010308@binghamton.edu> <20130331012231.GJ6369@dastard> <515C3BF3.60601@binghamton.edu> <51684382.50008@binghamton.edu> <5168AC0B.5010100@hardwarefreak.com> <516C649A.8010003@binghamton.edu> <20130416161841.GB13938@destitution> In-Reply-To: <20130416161841.GB13938@destitution> List-Id: XFS Filesystem from SGI List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Content-Transfer-Encoding: 7bit Content-Type: text/plain; charset="us-ascii"; Format="flowed" Errors-To: xfs-bounces@oss.sgi.com Sender: xfs-bounces@oss.sgi.com To: Dave Chinner Cc: stan@hardwarefreak.com, "xfs@oss.sgi.com" Dave, Stan, Not sure if you remember, but we corresponded for a while a couple years ago about some performance problems I was having with XFS on a 26TB SAS-attached RAID box. If either of you is still working on XFS, I've got some new questions. Actually, what I've got is a new array to set up. Same size, but faster disks and a faster controller. It will replace the existing array as the primary backup volume. So since I have a fresh array that's not in production yet I was hoping to get some pointers on how to configure it to maximize XFS performance. In particular, I've seen a suggestion that a multipathed array should be sliced up into logical drives and pasted back together with LVM. Wondering also about putting the journal in a separate logical drive on the same array. I am able to set up a 2-way multipath right now, and I might be able to justify adding a second controller to the array to get a 4-way multipath going. Even if the LVM approach is the wrong one, I clearly have a rare chance to set this array up the right way. Please let me know if you have any suggestions. Thanks. -Dave Dave Hall Binghamton University kdhall@binghamton.edu 607-760-2328 (Cell) 607-777-4641 (Office) _______________________________________________ xfs mailing list xfs@oss.sgi.com http://oss.sgi.com/mailman/listinfo/xfs