From owner-freebsd-fs@FreeBSD.ORG Mon May 21 03:15:48 2012 Return-Path: Delivered-To: freebsd-fs@freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2001:4f8:fff6::34]) by hub.freebsd.org (Postfix) with ESMTP id BFB9D106566B for ; Mon, 21 May 2012 03:15:48 +0000 (UTC) (envelope-from araujobsdport@gmail.com) Received: from mail-gg0-f182.google.com (mail-gg0-f182.google.com [209.85.161.182]) by mx1.freebsd.org (Postfix) with ESMTP id 3AE0C8FC08 for ; Mon, 21 May 2012 03:15:47 +0000 (UTC) Received: by ggnm2 with SMTP id m2so4935577ggn.13 for ; Sun, 20 May 2012 20:15:47 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20120113; h=mime-version:reply-to:in-reply-to:references:date:message-id :subject:from:to:cc:content-type; bh=GBPVN7MGRR8o8dKbTMS2UgfBgC9Y7Hgyf7ikiYwcysA=; b=e952z+nFlMicH50p+dcvIIvE2s+Kw5ddEOMUFrUu4SJDs0WAJSAg487UOUHbhb3Adk dXndiMcfLwOyG5qFGdym9yHc4BwRAmlf5DWrNTnOhZjLIWlP1ImNxQW6ph5H3F19y/u8 ev1MyDSm85CuuXwMkFWE3frWd0GHdEzKi0v8hHMVEu2fsYCjGF5WaqfpMfZ+hkX/BvVv JJ8avnPcWkuEitiuMNXtbyoXkmUP90/kgGLRLl6MtzwXV56dpG6DN3OM2I/FQ2+WRXsL u5aGkrL/olF4UWVh+7PQA6PGdOk0Z5tC+gY0NnseLsj/m1XJ03d7Ael+4m12E6ebIE4B /0EQ== MIME-Version: 1.0 Received: by 10.50.171.69 with SMTP id as5mr5527869igc.72.1337570146756; Sun, 20 May 2012 20:15:46 -0700 (PDT) Received: by 10.231.31.196 with HTTP; Sun, 20 May 2012 20:15:46 -0700 (PDT) In-Reply-To: References: Date: Mon, 21 May 2012 11:15:46 +0800 Message-ID: From: Marcelo Araujo To: Trent Nelson Content-Type: text/plain; charset=ISO-8859-1 X-Content-Filtered-By: Mailman/MimeDel 2.1.5 Cc: "freebsd-fs@freebsd.org" Subject: Re: Mirror of Raidz for data reliability X-BeenThere: freebsd-fs@freebsd.org X-Mailman-Version: 2.1.5 Precedence: list Reply-To: araujo@FreeBSD.org List-Id: Filesystems List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Mon, 21 May 2012 03:15:48 -0000 2012/5/19 Trent Nelson > Hi Marcelo, > > > >2012/5/17 George Kontostanos > > > > > >Not no.You can use Devd to start some scripts to mount the FS in another > >machine or something like that. > >But I can't be focused only in this scenario, I believe there are much > >more > >application for it. > > I'm in a similar situation with Snakebite. I have two boxes that can see > a common set of disks (via FC SAN). I'm interested in failover, but like > you, I don't want to use HAST -- why duplicate data when both machines can > access the disks? > > I came across these articles yesterday, which are pretty neat: > > CARP and devd on FreeBSD: > http://blather.michaelwlucas.com/archives/224 > Automated CARP/HAST > Failover: http://blather.michaelwlucas.com/archives/241 > > Yeap, you can use CARP + anything else to help you make it work. However in my case, if I have a JBOD fail, I want to be able to import the another JBOD with all data, so in my case I need raidz + vdev(mirror). Currently, I made a patch and now it works pretty well, but I'm doing some more tests to check if I'll face out any problem. Best Regards, -- Marcelo Araujo araujo@FreeBSD.org