From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from relay.sgi.com (relay1.corp.sgi.com [137.38.102.111]) by oss.sgi.com (Postfix) with ESMTP id 482367D11 for ; Wed, 6 Jul 2016 17:16:58 -0500 (CDT) Received: from cuda.sgi.com (cuda2.sgi.com [192.48.176.25]) by relay1.corp.sgi.com (Postfix) with ESMTP id 0581E8F809C for ; Wed, 6 Jul 2016 15:16:54 -0700 (PDT) Received: from ipmail06.adl2.internode.on.net (ipmail06.adl2.internode.on.net [150.101.137.129]) by cuda.sgi.com with ESMTP id Jk4FWrBPd3SLqpyj for ; Wed, 06 Jul 2016 15:16:51 -0700 (PDT) Date: Thu, 7 Jul 2016 08:16:48 +1000 From: Dave Chinner Subject: Re: [PATCH] nfsd: allow SCSI layout support without Block layout Message-ID: <20160706221648.GE12670@dastard> References: <74871b1ce0d09b21fb67c1b2176695cc1c19169e.1467624319.git.bcodding@redhat.com> <20160706091953.GD12670@dastard> <73B22D64-6A0B-4B8B-8A4D-6AA7AC26F30D@redhat.com> <20160706124326.GA18856@fieldses.org> MIME-Version: 1.0 Content-Disposition: inline In-Reply-To: <20160706124326.GA18856@fieldses.org> 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 Errors-To: xfs-bounces@oss.sgi.com Sender: xfs-bounces@oss.sgi.com To: "J. Bruce Fields" Cc: Benjamin Coddington , Christoph Hellwig , xfs@oss.sgi.com On Wed, Jul 06, 2016 at 08:43:26AM -0400, J. Bruce Fields wrote: > On Wed, Jul 06, 2016 at 05:58:09AM -0400, Benjamin Coddington wrote: > > On 6 Jul 2016, at 5:19, Dave Chinner wrote: > > > > >On Tue, Jul 05, 2016 at 09:48:47PM -0400, Benjamin Coddington wrote: > > >>We shouldn't have to configure both NFSD_BLOCKLAYOUT and > > >>NFSD_SCSILAYOUT if > > >>all we want are SCSI layouts on the server, so define the xfs export > > >>operations for either configuration. > > >> > > >>Signed-off-by: Benjamin Coddington > > > > > >I don't really like exploding config option dependencies into > > >subsystems that aren't actually related to the config options. > > >It's confusing enough laready that we've got XFS code dependent on > > >PNFSD config options without adding more to it. Instead, I'd > > >suggest this should be resolved in the kconfig files. i.e. make > > >CONFIG_NFSD_SCSILAYOUT=y select CONFIG_NFSD_BLOCKLAYOUT to resolve > > >the config dependency at config time. > > > > But the point is to leave CONFIG_NFSD_BLOCKLAYOUT undefined > > otherwise knfsd > > will advertise block layouts to clients -- which we don't want. Pnfsd layout is determined at compile time? That's seems less than useful to me for distros wanting to support for multiple layout types in the one kernel. i.e. Shouldn't the layout to be advertised be something like a per-export configuration option rather than determined at compile time define? > > Would a third define specific for xfs_export_operations that gets > > set in kconfig files work for you? Something like XFS_PNFS_EXPORT_OPS. > > That makes sense to me.... Sounds good, but I'd drop the "XFS_" prefix because when multiple filesytems end up supporting it, we don't want to have to select every single one of them from the PNFSD config options... Cheers, Dave. -- Dave Chinner david@fromorbit.com _______________________________________________ xfs mailing list xfs@oss.sgi.com http://oss.sgi.com/mailman/listinfo/xfs