From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from cuda.sgi.com (cuda2.sgi.com [192.48.176.25]) by oss.sgi.com (8.14.3/8.14.3/SuSE Linux 0.8) with ESMTP id p6MI5IcR097918 for ; Fri, 22 Jul 2011 13:05:18 -0500 Received: from greer.hardwarefreak.com (localhost [127.0.0.1]) by cuda.sgi.com (Spam Firewall) with ESMTP id DFA668EA7D for ; Fri, 22 Jul 2011 11:05:17 -0700 (PDT) Received: from greer.hardwarefreak.com (mo-65-41-216-221.sta.embarqhsd.net [65.41.216.221]) by cuda.sgi.com with ESMTP id Drk1FScxuuoi1315 for ; Fri, 22 Jul 2011 11:05:17 -0700 (PDT) Message-ID: <4E29BBDA.3000603@hardwarefreak.com> Date: Fri, 22 Jul 2011 13:05:14 -0500 From: Stan Hoeppner MIME-Version: 1.0 Subject: Re: 30 TB RAID6 + XFS slow write performance References: <4E24907F.6020903@johnbokma.com> <201107210820.01019@zmi.at> <20110721064838.GA13963@dastard> <201107220810.01889@zmi.at> In-Reply-To: <201107220810.01889@zmi.at> List-Id: XFS Filesystem from SGI List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Sender: xfs-bounces@oss.sgi.com Errors-To: xfs-bounces@oss.sgi.com To: Michael Monnerie Cc: John Bokma , xfs@oss.sgi.com On 7/22/2011 1:10 AM, Michael Monnerie wrote: > Yes, I just wanted to know about the corner cases, and how XFS behaves. > Actually, we're changing over to using NetApps, and with their WAFL > anyway I should drop all su/sw usage and just use 4KB blocks. I've never used a NetApp filer myself. However, that said, I would assume that WAFL is only in play for NFS/CIFS transactions since WAFL is itself a filesystem. When exposing LUNs from the same filer to FC and iSCSI hosts I would assume the filer acts just as any other SAN controller would. In this case I would think you'd probably still want to align your XFS filesystem to the underlying RAID stripe from which the LUN was carved. -- Stan _______________________________________________ xfs mailing list xfs@oss.sgi.com http://oss.sgi.com/mailman/listinfo/xfs