From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from fieldses.org ([174.143.236.118]:47307 "EHLO fieldses.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1756026Ab1EXNRi (ORCPT ); Tue, 24 May 2011 09:17:38 -0400 Date: Tue, 24 May 2011 09:17:37 -0400 From: "J. Bruce Fields" To: Steven Whitehouse Cc: Taousif_Ansari@DELLTEAM.com, Shyam_Iyer@Dell.com, linux-nfs@vger.kernel.org, Ashokan_Vellimalai@Dell.com, cluster-devel@redhat.com Subject: Re: Performance Issue with multiple dataserver Message-ID: <20110524131737.GA1934@fieldses.org> References: <20110519115018.GA31978@fieldses.org> <20110519131236.GA32648@fieldses.org> <20110519134356.GB32648@fieldses.org> <1306237459.2896.5.camel@menhir> Content-Type: text/plain; charset=us-ascii In-Reply-To: <1306237459.2896.5.camel@menhir> Sender: linux-nfs-owner@vger.kernel.org List-ID: MIME-Version: 1.0 On Tue, May 24, 2011 at 12:44:19PM +0100, Steven Whitehouse wrote: > /Hi, > > On Tue, 2011-05-24 at 17:09 +0530, Taousif_Ansari@DELLTEAM.com wrote: > > Hi Bruce, Shyam > > > > As mentioned here http://wiki.linux-nfs.org/wiki/index.php/PNFS_server_projects gfs2 is also having issues(crashes, performance), so instead of going for gfs2 can we debug spNFS itself to get high performance? > > > > > > -Taousif > > > As far as I'm aware that is historical information. If there are still > problems with GFS2, then please report them so we can work on them, Well, they may be nfs problems rather than gfs2 problems. In either case, neither pnfs/gfs2 nor spnfs is a particularly mature project; you will find bugs and performance problems in both. I think a cluster-filesystem-based approach probably has the better chance of getting merged earlier, as it solves a number of thorny problems (such as how to do IO through the MDS) for you. But it all depends on what your goals are. Either will require significant development work to get into acceptable shape. --b. From mboxrd@z Thu Jan 1 00:00:00 1970 From: J. Bruce Fields Date: Tue, 24 May 2011 09:17:37 -0400 Subject: [Cluster-devel] Performance Issue with multiple dataserver In-Reply-To: <1306237459.2896.5.camel@menhir> References: <20110519115018.GA31978@fieldses.org> <20110519131236.GA32648@fieldses.org> <20110519134356.GB32648@fieldses.org> <1306237459.2896.5.camel@menhir> Message-ID: <20110524131737.GA1934@fieldses.org> List-Id: To: cluster-devel.redhat.com MIME-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit On Tue, May 24, 2011 at 12:44:19PM +0100, Steven Whitehouse wrote: > /Hi, > > On Tue, 2011-05-24 at 17:09 +0530, Taousif_Ansari at DELLTEAM.com wrote: > > Hi Bruce, Shyam > > > > As mentioned here http://wiki.linux-nfs.org/wiki/index.php/PNFS_server_projects gfs2 is also having issues(crashes, performance), so instead of going for gfs2 can we debug spNFS itself to get high performance? > > > > > > -Taousif > > > As far as I'm aware that is historical information. If there are still > problems with GFS2, then please report them so we can work on them, Well, they may be nfs problems rather than gfs2 problems. In either case, neither pnfs/gfs2 nor spnfs is a particularly mature project; you will find bugs and performance problems in both. I think a cluster-filesystem-based approach probably has the better chance of getting merged earlier, as it solves a number of thorny problems (such as how to do IO through the MDS) for you. But it all depends on what your goals are. Either will require significant development work to get into acceptable shape. --b.