From owner-freebsd-current@FreeBSD.ORG Wed Jul 2 19:52:00 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 A8BBD4E9 for ; Wed, 2 Jul 2014 19:52:00 +0000 (UTC) Received: from mail-pd0-x230.google.com (mail-pd0-x230.google.com [IPv6:2607:f8b0:400e:c02::230]) (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 7B70B2B0A for ; Wed, 2 Jul 2014 19:52:00 +0000 (UTC) Received: by mail-pd0-f176.google.com with SMTP id ft15so12450583pdb.35 for ; Wed, 02 Jul 2014 12:52:00 -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=wWofAPBwQbRyFx9l8R5jYx/Wo8UbnHabrpEvdtVWimc=; b=i0f0zjJpXiIXOTEmD5l0/iwu0ENto2koHbVeTs2D2VdzdK71n5aT2sLuAkEmM8IwhE TJ6sqdvq5MA7oIao4lNfKa3L2/E7D3o9tt6g7irSvPqZlpaGox39oGT8QuWU3kj98G5M i+XtJLksYUp2tWLJca6K9j/6Ibd1PWELaqwzVE+YiI5QtqaFWd95EHo/t3oKjsYoMpk1 1GPEKzH8JOMLNdj8TyTyyjRnxCHDk9FRSgDQYz0TyFTTy930OlEF1PB/2/ndl5g5ND07 fvv8BCVOWyM4YJXRDxCgYkCXlSZ5dBOpt1Li/rHgQL7wlntck+93e0A03wQZIoIQWnGV rEGw== MIME-Version: 1.0 X-Received: by 10.70.34.228 with SMTP id c4mr1697401pdj.76.1404330719954; Wed, 02 Jul 2014 12:51:59 -0700 (PDT) Sender: kob6558@gmail.com Received: by 10.66.134.4 with HTTP; Wed, 2 Jul 2014 12:51:59 -0700 (PDT) In-Reply-To: <20140702112609.GA85758@zxy.spb.ru> References: <20140626232727.GB1825@pwnie.vrt.sourcefire.com> <53ACE5B4.8070700@rice.edu> <20140701091252.GB3443@brick> <20140701231305.GA37246@zxy.spb.ru> <20140702112609.GA85758@zxy.spb.ru> Date: Wed, 2 Jul 2014 12:51:59 -0700 X-Google-Sender-Auth: LpVJTTfEKCbZWbrBsda__S86ZV4 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: 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 19:52:00 -0000 On Wed, Jul 2, 2014 at 4:26 AM, Slawa Olhovchenkov wrote: > On Tue, Jul 01, 2014 at 10:43:08PM -0700, Kevin Oberman wrote: > > > 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 > > Yes, this case. As I know, single transfer over 40G link limited by > 10G. > ??? No, not at all. Getting 40G performance over TCP is not easy, but there is no 10G limitation. I might also suggest looking at Luigi Rizzo's netmap. It is NOT a drop-in replacement for the TCP stack, but a tool that works with many high-speed Ethernet devices to allow very efficient bulk data transfers. You will see lots of discussion of it on net@. It is available for both FreeBSD and Linux. It has become very popular for this sort of thing, but it does require software customization. "Normal" network operatipns will continue to use the standard network stack. -- R. Kevin Oberman, Network Engineer, Retired E-mail: rkoberman@gmail.com