From mboxrd@z Thu Jan 1 00:00:00 1970 From: Jeremy Allison Subject: Re: [Lsf-pc] [LSF/MM TOPIC] async buffered diskio read for userspace apps Date: Sun, 18 Jan 2015 23:12:18 -0800 Message-ID: <20150119071218.GA9747@jeremy-HP> References: <20150115223157.GB25884@quack.suse.cz> <20150116165506.GA10856@samba2> Reply-To: Jeremy Allison Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Cc: Jeremy Allison , Jan Kara , lsf-pc@lists.linux-foundation.org, "linux-fsdevel@vger.kernel.org" , linux-mm@kvack.org, Christoph Hellwig , Volker Lendecke , Jens Axboe To: Milosz Tanski Return-path: Received: from fn.samba.org ([216.83.154.106]:33122 "EHLO mail.samba.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1750968AbbASHMQ (ORCPT ); Mon, 19 Jan 2015 02:12:16 -0500 Content-Disposition: inline In-Reply-To: Sender: linux-fsdevel-owner@vger.kernel.org List-ID: On Sun, Jan 18, 2015 at 10:49:36PM -0500, Milosz Tanski wrote: > > I have the first version of the FIO cifs support via samba in my fork > of FIO here: https://github.com/mtanski/fio/tree/samba > > Right now it only supports sync mode of FIO (eg. can't submit multiple > outstanding requests) but I'm looking into how to make it work with > smb2 read/write calls with the async flag. > > Additionally, I'm sure I'm doing some things not quite right in terms > of smbcli usage as it was a decent amount of trial and error to get it > to connect (esp. the setup before smbcli_full_connection). Finally, it > looks like the more complex api I'm using (as opposed to smbclient, > because I want the async calls) doesn't quite fully export all calls I > need via headers / public dyn libs so it's a bit of a hack to get it > to build: https://github.com/mtanski/fio/commit/7fd35359259b409ed023b924cb2758e9efb9950c#diff-1 > > But it works for my randread tests with zipf and the great part is > that it should provide a flexible way to test samba with many fake > clients and access patterns. So... progress. One problem here. Looks like fio is under GPLv2-only, is that correct ? If so there's no way to combine the two codebases, as Samba is under GPLv3-or-later with parts under LGPLv3-or-later. fio needs to be GPLv2-or-later in order to be able to use with libsmbclient. Cheers, Jeremy.