From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1755191AbaIBWGX (ORCPT ); Tue, 2 Sep 2014 18:06:23 -0400 Received: from mx1.redhat.com ([209.132.183.28]:22062 "EHLO mx1.redhat.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1752135AbaIBWGV (ORCPT ); Tue, 2 Sep 2014 18:06:21 -0400 Message-ID: <54063F56.9090606@redhat.com> Date: Tue, 02 Sep 2014 15:06:14 -0700 From: Andy Grover Organization: Red Hat User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:24.0) Gecko/20100101 Thunderbird/24.6.0 MIME-Version: 1.0 To: "Richard W.M. Jones" CC: target-devel@vger.kernel.org, linux-scsi@vger.kernel.org, hch@lst.de, nab@linux-iscsi.org, shli@kernel.org, linux-kernel@vger.kernel.org Subject: Re: [RFC 1/2] target: Add documentation on the target userspace pass-through driver References: <1404241875-29164-1-git-send-email-agrover@redhat.com> <1404241875-29164-2-git-send-email-agrover@redhat.com> <20140830173510.GA11820@redhat.com> <54037C46.1050601@redhat.com> <20140831212257.GO1302@redhat.com> In-Reply-To: <20140831212257.GO1302@redhat.com> Content-Type: text/plain; charset=ISO-8859-1; format=flowed Content-Transfer-Encoding: 7bit Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On 08/31/2014 02:22 PM, Richard W.M. Jones wrote: > Reading this several times, I now think I get what it's trying to say, > but I think it needs to introduces the terms (as the Economist style > does). Something like this: > > "TCM is the new name for LIO, an in-kernel iSCSI target (server). > Existing TCM targets run in the kernel. TCMU (TCM in Userspace) > allows userspace programs to be written which act as iSCSI targets. > This document describes the design. > > The existing kernel provides modules for different SCSI transport > protocols. TCM also modularizes the data storage. There are > existing modules for file, block device, RAM or using another SCSI > device as storage. These are called "backstores" or "storage > engines". These built-in modules are implemented entirely as kernel > code." > > And hopefully having defined a bit of background, the rest of the > document just flows nicely: Thanks much! I've put this in the doc, and will hopefully send out a final patchset for inclusion with the new text in the next week or so. The only change I made was "another" instead of "the new name" -- because to be honest I don't know if there was actually an attempt at a name change, and if so if it was successful or not :) LIO seems to have stuck, but TCM seems to refer just to the "backend" part of LIO. Thanks again -- Andy