From owner-freebsd-stable@FreeBSD.ORG Wed Jul 16 11:50:07 2008 Return-Path: Delivered-To: freebsd-stable@freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2001:4f8:fff6::34]) by hub.freebsd.org (Postfix) with ESMTP id 9F45E106566C for ; Wed, 16 Jul 2008 11:50:07 +0000 (UTC) (envelope-from andrew@modulus.org) Received: from email.octopus.com.au (host-122-100-2-232.octopus.com.au [122.100.2.232]) by mx1.freebsd.org (Postfix) with ESMTP id 6617A8FC2E for ; Wed, 16 Jul 2008 11:50:06 +0000 (UTC) (envelope-from andrew@modulus.org) Received: by email.octopus.com.au (Postfix, from userid 1002) id 12BA617D88; Wed, 16 Jul 2008 21:50:05 +1000 (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 [10.20.30.101] (60.218.233.220.exetel.com.au [220.233.218.60]) (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 A72F117261 for ; Wed, 16 Jul 2008 21:50:00 +1000 (EST) Message-ID: <487DE064.6020002@modulus.org> Date: Wed, 16 Jul 2008 21:49:56 +1000 From: Andrew Snow User-Agent: Thunderbird 1.5.0.9 (Windows/20061207) MIME-Version: 1.0 To: freebsd-stable@freebsd.org References: <1216130834.27608.27.camel@lanshark.dmv.com> <20080715145426.GA31340@eos.sc1.parodius.com> <512C3A9B-5C0C-4DB6-8916-8E2898DD06A5@ish.com.au> In-Reply-To: <512C3A9B-5C0C-4DB6-8916-8E2898DD06A5@ish.com.au> Content-Type: text/plain; charset=ISO-8859-1; format=flowed Content-Transfer-Encoding: 7bit Subject: Re: Multi-machine mirroring choices X-BeenThere: freebsd-stable@freebsd.org X-Mailman-Version: 2.1.5 Precedence: list List-Id: Production branch of FreeBSD source code List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Wed, 16 Jul 2008 11:50:07 -0000 We have deployed an IMAP server running on Cyrus on FreeBSD 6.2, with a 500GB UFS2 partition mirrored with geom_mirror and geom_gate across a dedicated 1gbps link. It has proven to be very stable and reliable after appropriate tweaking. The uptime of the mirror is usually 1-3 months, sometimes it seems to break randomly, possibly because our timeout is too low. In any case, it doesn't take too long to rebuild at about 60mb/s. (I recently tested the same solution with FreeBSD-7 and found it now goes at a full 100mb/s.)