From owner-freebsd-scsi@FreeBSD.ORG Sat Jul 28 10:30:13 2012 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 42FBB106564A for ; Sat, 28 Jul 2012 10:30:13 +0000 (UTC) (envelope-from matyee.nmi@gmail.com) Received: from mail-lpp01m010-f54.google.com (mail-lpp01m010-f54.google.com [209.85.215.54]) by mx1.freebsd.org (Postfix) with ESMTP id B65788FC0A for ; Sat, 28 Jul 2012 10:30:12 +0000 (UTC) Received: by laai10 with SMTP id i10so3169250laa.13 for ; Sat, 28 Jul 2012 03:30:06 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20120113; h=mime-version:date:message-id:subject:from:to:content-type; bh=eYizDXFKYyI+LwRfX1yT/FeBVyLe5dmJ+1T7vomDsuE=; b=M8cNQbHkTt93N0rRC/u2iTRaGcJOBdz7CUWnZFDqWOovyXAyQQ6pBgsoWuAL2apPyY CfLoyqzKnFYwmHD2/8ZdQSv7/0/sArEmgYjEhlbrPZeDQm/a/8r/z2SovlLHVeFHApp9 gD9wdy1fKknxbmByUVt/k9EzpgkzIWN3GBr+BkRzlovB+VtNTdvOfz5ay0obq79BSdDv Yu+hUlao99Han8HqUN972VldSP2NiiXPwSZbuZthw6my24QeVvTnGowohZCWjV8eGl8o lsgqj0K2Pq4sOrRIu7B6Uw3pFQf4TqZHD9G1gthAyzvLBH5sxBuOjaWTsDsYqvXwyPFk Q/IA== MIME-Version: 1.0 Received: by 10.152.144.234 with SMTP id sp10mr5416422lab.51.1343471406359; Sat, 28 Jul 2012 03:30:06 -0700 (PDT) Received: by 10.114.5.165 with HTTP; Sat, 28 Jul 2012 03:30:06 -0700 (PDT) Date: Sat, 28 Jul 2012 12:30:06 +0200 Message-ID: From: =?UTF-8?B?UMOpdGVyIFN6YWLDsw==?= To: freebsd-scsi@freebsd.org Content-Type: text/plain; charset=UTF-8 Subject: Multipath iSCSI 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: Sat, 28 Jul 2012 10:30:13 -0000 Dear *, I have started to build a HA system. It runs a postgresql cluster with two nodes (master and hot stand-by, FreeBSD 9.0, postgresl 9.1). The storage for the database is provided by 2 separate systems (FreeBSD 9.0, iSCSI target, over ZFS). For the maximum redundancy I would like to use multipathing on the DB nodes. For me the best would be if the 2 DB nodes and the 2 storage nodes are all FreeBSD. Now I have 4 installed FreeBSD 9.0, iSCSI targets are in place, and the database nodes uses the exported targets as a storage. What is left is the multipath part. I have search a lot in this topic, but now I am really confused. I found some mails from this mailing list, the problem was the same, and there was no solution, but the mails are quite old (FreeBSD 7.3). I checked gmultipath, but it seems it is not the solution. Does FreeBSD support iSCSI multipath currently, or should I change the OS under the database nodes from FreeBSD to some linux distribution. I found a lot of working configuration for linux and iSCSI multipathing. Cheers, Matyee