From owner-freebsd-questions@FreeBSD.ORG Tue Aug 10 14:02:05 2010 Return-Path: Delivered-To: freebsd-questions@freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2001:4f8:fff6::34]) by hub.freebsd.org (Postfix) with ESMTP id B2342106566B for ; Tue, 10 Aug 2010 14:02:05 +0000 (UTC) (envelope-from djr@pdconsec.net) Received: from ipmail04.adl6.internode.on.net (ipmail04.adl6.internode.on.net [150.101.137.141]) by mx1.freebsd.org (Postfix) with ESMTP id 30FDF8FC13 for ; Tue, 10 Aug 2010 14:02:04 +0000 (UTC) X-IronPort-Anti-Spam-Filtered: true X-IronPort-Anti-Spam-Result: Ai8FAE/3YEyWZcBC/2dsb2JhbACTYY1nwx6FOgSMCA Received: from goliath.pdconsec.net (HELO smtp.pdconsec.net) ([150.101.192.66]) by ipmail04.adl6.internode.on.net with SMTP; 10 Aug 2010 23:32:03 +0930 Received: from mail1.pdconsec.net ([192.168.1.41] helo=mail1.pdconsec.net) with IPv4:25 by smtp.pdconsec.net; 11 Aug 2010 00:02:01 +1000 Received: from smtp.pdconsec.net ([192.168.1.32] RDNS failed) by mail1.pdconsec.net with Microsoft SMTPSVC(6.0.3790.4675); Wed, 11 Aug 2010 00:00:52 +1000 Received: from [10.14.6.41] ([150.101.192.69] helo=[10.14.6.41]) with IPv4:10025 by smtp.pdconsec.net; 11 Aug 2010 00:01:59 +1000 Message-ID: <4C615B94.3010207@pdconsec.net> Date: Wed, 11 Aug 2010 00:00:52 +1000 From: David Rawling User-Agent: Mozilla/5.0 (Windows; U; Windows NT 6.1; en-US; rv:1.9.2.8) Gecko/20100802 Thunderbird/3.1.2 MIME-Version: 1.0 To: freebsd-questions@freebsd.org References: <4C5E9874.3030606@nagual.nl> <4C5EA29B.7040401@infracaninophile.co.uk> <4C5ECF42.20509@nagual.nl> In-Reply-To: Content-Type: text/plain; charset=ISO-8859-1; format=flowed Content-Transfer-Encoding: 7bit X-OriginalArrivalTime: 10 Aug 2010 14:00:52.0689 (UTC) FILETIME=[71DE2410:01CB3894] Subject: Re: zfs question X-BeenThere: freebsd-questions@freebsd.org X-Mailman-Version: 2.1.5 Precedence: list List-Id: User questions List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Tue, 10 Aug 2010 14:02:05 -0000 On 9/08/2010 2:52 AM, krad wrote: > On 8 August 2010 16:51, Adam Vande More wrote: >> On Sun, Aug 8, 2010 at 10:37 AM, Dick Hoogendijk wrote: >>> On 8-8-2010 14:27, Matthew Seaman wrote: >>>> Yes. It works very well. >>>> On amd64 you'll get a pretty reasonable setup out of the box (so to >>>> speak) which will work fine for most purposes. >>> One other thing comes to mind. I want a very robus, fast rockl solid >>> *server* >>> It will be a file- email and webserver mostly. >>> >>> Instead of using two ZFS mirrors I could also go for gmirror (I'm not >>> familiar with it, but it's been around for quite some time so it should >> be >>> very stable). I don't get the data integrity that way, but my files would >> be >>> safe, no? >>> >>> Also, using gmirror I could use "normal" BSD UFS filesystems and normal >>> swap files devided across all disks? >>> Or am I wrong, thinking this way. >>> >>> I'm not into fancy stuff; it has to be robust, fast and safe. >> >> You do not *need* amd64, however it would the best choice. I wouldn't even >> mess around with gmirror. It's great and I love it, but it has some >> serious >> drawback's compared to zfs mirroring. One is there is no integrity >> checking, and two is a full resyc is required on an unclean disconnect. >> >> http://wiki.freebsd.org/RootOnZFS/GPTZFSBoot/Mirror >> >> -- >> Adam Vande More > you could add a gjournal layer in there as well for better data integratity. > I think you can do softupdates + journal as well now although I have never > used it If you're after a rock solid server, then to be brutally honest it is less important to decide what you run than it is to choose something that you know well. Since you have 4 years of Solaris/OpenSolaris experience recently, you are likely to know ZFS better than gmirror. So I ask you to ponder - at four o'clock in the morning, with mail down, web servers down and all the disks holding your files failing to mount - which file system or disk structure would you prefer to try to troubleshoot? Dave. -- David Rawling Principal Consultant PD Consulting And Security Mob: +61 412 135 513 Email: djr@pdconsec.net