From owner-freebsd-xen@FreeBSD.ORG Mon Oct 20 12:34:25 2014 Return-Path: Delivered-To: freebsd-xen@freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [8.8.178.115]) (using TLSv1.2 with cipher AECDH-AES256-SHA (256/256 bits)) (No client certificate requested) by hub.freebsd.org (Postfix) with ESMTPS id 28AD6250 for ; Mon, 20 Oct 2014 12:34:25 +0000 (UTC) Received: from new1-smtp.messagingengine.com (new1-smtp.messagingengine.com [66.111.4.221]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (Client did not present a certificate) by mx1.freebsd.org (Postfix) with ESMTPS id EE451DF8 for ; Mon, 20 Oct 2014 12:34:24 +0000 (UTC) Received: from compute2.internal (compute2.nyi.internal [10.202.2.42]) by gateway2.nyi.internal (Postfix) with ESMTP id 4E7CB1A7B for ; Mon, 20 Oct 2014 08:34:17 -0400 (EDT) Received: from web3 ([10.202.2.213]) by compute2.internal (MEProxy); Mon, 20 Oct 2014 08:34:17 -0400 DKIM-Signature: v=1; a=rsa-sha1; c=relaxed/relaxed; d= messagingengine.com; h=message-id:x-sasl-enc:from:to :mime-version:content-transfer-encoding:content-type:subject :date:in-reply-to:references; s=smtpout; bh=ac1XY/U67vTaLqyceHDp frvUsAg=; b=H3PgW/bbNqLlkMP8JeNHPprb8kUqwjmssdrwYtBu8t0H7efteuMw n8Df07j1yjNT6Xn24vD/ZJ8LY7lcNH49kS/FHMRH4CoMGt/yBQU6Z6jU+WQDszz/ pnayvQLjyygqnYdSnUXpvHEaTpiZboWMMn9TWogfiVJQbUZEXeEdDFA= Received: by web3.nyi.internal (Postfix, from userid 99) id 102651144F9; Mon, 20 Oct 2014 08:34:17 -0400 (EDT) Message-Id: <1413808457.2828604.181041145.4121AB54@webmail.messagingengine.com> X-Sasl-Enc: It2VP+zdJiIchCshNECgC2KsyrClfjA/PbxDn3LY2r3D 1413808457 From: Mark Felder To: freebsd-xen@freebsd.org MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable Content-Type: text/plain; charset="utf-8" X-Mailer: MessagingEngine.com Webmail Interface - ajax-e69fc525 Subject: Re: disk loss Date: Mon, 20 Oct 2014 07:34:17 -0500 In-Reply-To: <65CC3330-E22F-4253-918E-72CA9B004A81@sarenet.es> References: <000001cfe3ca$8d242950$a76c7bf0$@ezwind.net> <5436CF13.4080509@citrix.com> <000101cfe3f1$91407da0$b3c178e0$@ezwind.net> <65CC3330-E22F-4253-918E-72CA9B004A81@sarenet.es> X-BeenThere: freebsd-xen@freebsd.org X-Mailman-Version: 2.1.18-1 Precedence: list List-Id: Discussion of the freebsd port to xen - implementation and usage List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Mon, 20 Oct 2014 12:34:25 -0000 On Mon, Oct 20, 2014, at 02:09, Egoitz Aurrekoetxea wrote: > Good morning, >=20 > I would recommend you using NFS instead of iSCSI. It=E2=80=99s far more b= etter to > handle the connection to disk arrays (the FreeNAS in this situation) > through a mature and stable protocol like NFS > and not something manipulating blocks directly. I would advise you to > rely the responsibility of serving the SR to NFS.=20 >=20 You can't have redundant paths with NFS (in FreeBSD), though. I'm not so sure everyone would agree that NFS is mature and stable, either :-) My personal experience with building a Xen+FreeBSD cluster concluded that NFS was far too slow and unreliable, and a properly configured iSCSI with multiple paths and proper alignment was extremely fast.