From owner-freebsd-current@FreeBSD.ORG Wed Jul 2 05:43:09 2014 Return-Path: Delivered-To: freebsd-current@freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2001:1900:2254:206a::19:1]) (using TLSv1 with cipher ADH-AES256-SHA (256/256 bits)) (No client certificate requested) by hub.freebsd.org (Postfix) with ESMTPS id 851218AC; Wed, 2 Jul 2014 05:43:09 +0000 (UTC) Received: from mail-pd0-x232.google.com (mail-pd0-x232.google.com [IPv6:2607:f8b0:400e:c02::232]) (using TLSv1 with cipher ECDHE-RSA-RC4-SHA (128/128 bits)) (Client CN "smtp.gmail.com", Issuer "Google Internet Authority G2" (verified OK)) by mx1.freebsd.org (Postfix) with ESMTPS id 535E52962; Wed, 2 Jul 2014 05:43:09 +0000 (UTC) Received: by mail-pd0-f178.google.com with SMTP id r10so11317928pdi.23 for ; Tue, 01 Jul 2014 22:43:08 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20120113; h=mime-version:sender:in-reply-to:references:date:message-id:subject :from:to:cc:content-type; bh=YXWqDwhY512c2k1d+mRMJzzr/eDOQGrjuxiEcT0f9e8=; b=FXIUAV2wRsEa+ukEj83dP3EJKgIQ8teJkneK5yglFDyMNvf9YLqtZDC0AwsroAxuCH zw4yrtuJMA92kqXwQCL4TCzhi/FTXg+0jBX048KINFfEzLk6M6vgQP/OOHb2aCXtA0ES iVAW2w8XMU27d3RxDLnawVoocVvENNzK0iPhYIgaLME7JRXGoFGL3iS0jPlnq3pbvaUe ulPt14Vikusx7ZBgpq7zOwh4VaxeOyVmZ5eJA8jq8ypVWls0oBN+U7btf/B2OETqWyaW 1Vq7IKPRTOoiIvLHrGWL9m1aD/kg3blTT/TmEihyOVGep7f974slvsS374/WU+C9jlTf lgPg== MIME-Version: 1.0 X-Received: by 10.66.251.233 with SMTP id zn9mr1559959pac.67.1404279788841; Tue, 01 Jul 2014 22:43:08 -0700 (PDT) Sender: kob6558@gmail.com Received: by 10.66.134.4 with HTTP; Tue, 1 Jul 2014 22:43:08 -0700 (PDT) In-Reply-To: <20140701231305.GA37246@zxy.spb.ru> References: <20140626232727.GB1825@pwnie.vrt.sourcefire.com> <53ACE5B4.8070700@rice.edu> <20140701091252.GB3443@brick> <20140701231305.GA37246@zxy.spb.ru> Date: Tue, 1 Jul 2014 22:43:08 -0700 X-Google-Sender-Auth: Rct6Qes5Ho5lIVGwpPk_VUe7cv8 Message-ID: Subject: Re: FreeBSD iscsi target From: Kevin Oberman To: Slawa Olhovchenkov Content-Type: text/plain; charset=UTF-8 X-Content-Filtered-By: Mailman/MimeDel 2.1.18 Cc: "freebsd-hackers@freebsd.org" , Sreenivasa Honnur , FreeBSD Current X-BeenThere: freebsd-current@freebsd.org X-Mailman-Version: 2.1.18 Precedence: list List-Id: Discussions about the use of FreeBSD-current List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Wed, 02 Jul 2014 05:43:09 -0000 On Tue, Jul 1, 2014 at 4:13 PM, Slawa Olhovchenkov wrote: > On Tue, Jul 01, 2014 at 11:12:52AM +0200, Edward Tomasz Napierala wrote: > > > Hi. I've replied in private, but just for the record: > > > > On 0627T0927, Sreenivasa Honnur wrote: > > > Does freebsd iscsi target supports: > > > 1. ACL (access control lists) > > > > In 10-STABLE there is a way to control access based on initiator > > name and IP address. > > > > > 2. iSNS > > > > No; it's one of the iSCSI features that seem to only be used > > for marketing purposes :-) > > > > > 3. Multiple connections per session > > > > No; see above. > > I think this is help for 40G links. > I assume that you are looking at transfer of large amounts of data over 40G links. Assuming that tis is the case, yes, multiple connections per session can help you. If you have not done so, you should also look at http://fasterdata.es.net. It is a bit linux-centric these days, but still provides a lot of information on moving data efficiently over fast links. IIt is evolving continually, but did not discuss iSCSI last I knew. ESnet has an Nx100G backbone and many users (most notably the LHC at CERN) who regularly move increasingly large volumes of data, often around the clock, making efficient use of available bandwidth is critical. The network researchers there have put in significant efforts in determining how to best optimize such operations. -- R. Kevin Oberman, Network Engineer, Retired E-mail: rkoberman@gmail.com