From mboxrd@z Thu Jan 1 00:00:00 1970 From: Christoph Hellwig Subject: Re: [LSF/MM TOPIC] Remote access to pmem on storage targets Date: Tue, 26 Jan 2016 09:00:21 -0800 Message-ID: <20160126170021.GA21672@infradead.org> References: <06414D5A-0632-4C74-B76C-038093E8AED3@oracle.com> <5FD20017-B588-42E6-BBDA-2AA8ABDBA42B@ornl.gov> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Return-path: Content-Disposition: inline In-Reply-To: Sender: linux-nfs-owner-u79uwXL29TY76Z2rM5mHXA@public.gmane.org To: Chuck Lever Cc: "Atchley, Scott" , "lsf-pc-cunTk1MwBs9QetFLy7KEm3xJsTq8ys+cHZ5vskTnxNA@public.gmane.org" , Linux NFS Mailing List , Linux RDMA Mailing List , linux-fsdevel List-Id: linux-rdma@vger.kernel.org On Tue, Jan 26, 2016 at 10:29:35AM -0500, Chuck Lever wrote: > As I understand it, NVMf devices look like local devices. > NVMf devices need globally unique naming to enable safe use > with pNFS and other remote storage access protocols. NVMe provides global uniqueue identifiers similar to SCSI, and in fact there is even a standardised mapping to SCSI. The current SCSI layout draft will work fine with both multi ported PCIe NVMe devices as well as future fabrics devices. -- To unsubscribe from this list: send the line "unsubscribe linux-nfs" in the body of a message to majordomo-u79uwXL29TY76Z2rM5mHXA@public.gmane.org More majordomo info at http://vger.kernel.org/majordomo-info.html From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from bombadil.infradead.org ([198.137.202.9]:37998 "EHLO bombadil.infradead.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S932284AbcAZRAZ (ORCPT ); Tue, 26 Jan 2016 12:00:25 -0500 Date: Tue, 26 Jan 2016 09:00:21 -0800 From: Christoph Hellwig To: Chuck Lever Cc: "Atchley, Scott" , "lsf-pc@lists.linux-foundation.org" , Linux NFS Mailing List , Linux RDMA Mailing List , linux-fsdevel Subject: Re: [LSF/MM TOPIC] Remote access to pmem on storage targets Message-ID: <20160126170021.GA21672@infradead.org> References: <06414D5A-0632-4C74-B76C-038093E8AED3@oracle.com> <5FD20017-B588-42E6-BBDA-2AA8ABDBA42B@ornl.gov> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: Sender: linux-fsdevel-owner@vger.kernel.org List-ID: On Tue, Jan 26, 2016 at 10:29:35AM -0500, Chuck Lever wrote: > As I understand it, NVMf devices look like local devices. > NVMf devices need globally unique naming to enable safe use > with pNFS and other remote storage access protocols. NVMe provides global uniqueue identifiers similar to SCSI, and in fact there is even a standardised mapping to SCSI. The current SCSI layout draft will work fine with both multi ported PCIe NVMe devices as well as future fabrics devices.