From owner-freebsd-scsi@FreeBSD.ORG Fri Jan 9 01:03:47 2009 Return-Path: Delivered-To: freebsd-scsi@freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2001:4f8:fff6::34]) by hub.freebsd.org (Postfix) with ESMTP id 8605E106566C for ; Fri, 9 Jan 2009 01:03:47 +0000 (UTC) (envelope-from andrew@modulus.org) Received: from email.octopus.com.au (email.octopus.com.au [122.100.2.232]) by mx1.freebsd.org (Postfix) with ESMTP id 47E048FC12 for ; Fri, 9 Jan 2009 01:03:47 +0000 (UTC) (envelope-from andrew@modulus.org) Received: by email.octopus.com.au (Postfix, from userid 1002) id 8E70D17D8D; Fri, 9 Jan 2009 12:03:46 +1100 (EST) X-Spam-Checker-Version: SpamAssassin 3.2.3 (2007-08-08) on email.octopus.com.au X-Spam-Level: X-Spam-Status: No, score=-1.4 required=10.0 tests=ALL_TRUSTED autolearn=failed version=3.2.3 Received: from [10.1.50.60] (ppp121-44-0-132.lns10.syd7.internode.on.net [121.44.0.132]) (using TLSv1 with cipher DHE-RSA-AES256-SHA (256/256 bits)) (No client certificate requested) (Authenticated sender: admin@email.octopus.com.au) by email.octopus.com.au (Postfix) with ESMTP id 733CB1732D; Fri, 9 Jan 2009 12:03:42 +1100 (EST) Message-ID: <4966A25E.4070803@modulus.org> Date: Fri, 09 Jan 2009 12:03:26 +1100 From: Andrew Snow User-Agent: Thunderbird 2.0.0.14 (X11/20080523) MIME-Version: 1.0 To: Sossi Andrej References: <496634BB.9050902@dotcom.ts.it> In-Reply-To: <496634BB.9050902@dotcom.ts.it> Content-Type: text/plain; charset=UTF-8; format=flowed Content-Transfer-Encoding: 7bit Cc: freebsd-scsi@freebsd.org Subject: Re: ISCSI and multipath X-BeenThere: freebsd-scsi@freebsd.org X-Mailman-Version: 2.1.5 Precedence: list List-Id: SCSI subsystem List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Fri, 09 Jan 2009 01:03:47 -0000 Sossi Andrej wrote: > Another question about MD3000i. > My MD3000i have 2 controller and every controller have 2 net interface. > My FreeBSD server is connect on NAS server with 2 network cards throw > out 2 switch on th 2 networks. (192.168.253.X and 192.168.252.X). > In the official manual is written if the primary controller (or net) > have a problem the NAS automatically switch disks drive on second > controller. For this is required MPIO on Windows or MPP on Linux. It is > supported also on FreeBSD? If you only wanted to do failover at the network level with shared IP address, you could use lagg. However, since you have different IP subnets for each network, you probably want to look at using geom_fox. You set up two iSCSI connections, one to each controller, and geom_fox on top to make it appear as a single disk device. Hope that helps! - Andrew