From owner-freebsd-hackers@FreeBSD.ORG Sat May 30 21:36:46 2009 Return-Path: Delivered-To: freebsd-hackers@freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2001:4f8:fff6::34]) by hub.freebsd.org (Postfix) with ESMTP id 6CBA7106566B for ; Sat, 30 May 2009 21:36:46 +0000 (UTC) (envelope-from xorquewasp@googlemail.com) Received: from mail-ew0-f212.google.com (mail-ew0-f212.google.com [209.85.219.212]) by mx1.freebsd.org (Postfix) with ESMTP id EA2BF8FC0C for ; Sat, 30 May 2009 21:36:45 +0000 (UTC) (envelope-from xorquewasp@googlemail.com) Received: by ewy8 with SMTP id 8so3553119ewy.43 for ; Sat, 30 May 2009 14:36:45 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=googlemail.com; s=gamma; h=domainkey-signature:received:received:received:date:from:to:cc :subject:message-id:references:mime-version:content-type :content-disposition:in-reply-to; bh=MIleZUY4nCB4ClwDLGNTyEhRNC+CSI4Se7B8DdOQtA8=; b=QFaXUbW5Kl1Qye/pIASne9oQjOWy5Rlw2mRBbHRayqtIj1Vu6SWH8eBEl6xYiJAGJf QwxxjRsY63GELLgUu8D2sVG+33CZ4PHBmTvXqfjhqnCyK80doHrRf7JmOVe+PzsPAb1J rTjuqSrivsO8pb/qgPl3tRiR073+oS5L7c9Fs= DomainKey-Signature: a=rsa-sha1; c=nofws; d=googlemail.com; s=gamma; h=date:from:to:cc:subject:message-id:references:mime-version :content-type:content-disposition:in-reply-to; b=aIaNwe/YuVEfV9XC7D5mv1PesUvlZIPNBIYNesMaoOHn4tTD1BACGwGKuVSnrh5S8a tf+ZzAN+FSUbMg3vFzqfNsq3DlKsQz99tk32mUmjRbb0eDMc6Fqh5j3pDjsz5KMatz00 wFUgeyzH+lRq0FYTu2HkQznmP+hdp8W2ABYnY= Received: by 10.210.11.13 with SMTP id 13mr1962848ebk.31.1243719405059; Sat, 30 May 2009 14:36:45 -0700 (PDT) Received: from logik.internal.network (81-86-41-187.dsl.pipex.com [81.86.41.187]) by mx.google.com with ESMTPS id 24sm4448157ewy.49.2009.05.30.14.36.44 (version=TLSv1/SSLv3 cipher=OTHER); Sat, 30 May 2009 14:36:44 -0700 (PDT) Received: by logik.internal.network (Postfix, from userid 11001) id 40D0D5D59; Sat, 30 May 2009 21:36:43 +0000 (UTC) Date: Sat, 30 May 2009 22:36:43 +0100 From: xorquewasp@googlemail.com To: Mike Meyer Message-ID: <20090530213643.GA1478@logik.internal.network> References: <20090530175239.GA25604@logik.internal.network> <20090530144354.2255f722@bhuda.mired.org> <20090530191840.GA68514@logik.internal.network> <20090530162744.5d77e9d1@bhuda.mired.org> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20090530162744.5d77e9d1@bhuda.mired.org> Cc: freebsd-hackers@freebsd.org Subject: Re: Request for opinions - gvinum or ccd? X-BeenThere: freebsd-hackers@freebsd.org X-Mailman-Version: 2.1.5 Precedence: list List-Id: Technical Discussions relating to FreeBSD List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Sat, 30 May 2009 21:36:46 -0000 On 2009-05-30 16:27:44, Mike Meyer wrote: > > The last bit is wrong. Moving a zfs pool between two systems is pretty > straightforward. The configuration information is on the drives; you > just do "zpool import " after plugging them in, and if the mount > point exists, it'll mount it. If the system crashed with the zfs pool > active, you might have to do -f to force an import. Geom is pretty > much the same way, except you can configure it to not write the config > data to disk, thus forcing you to do it manually (what you > expect). I'm not sure geom is as smart if the drives change names, > though. > > RAID support and volume management has come a long way from the days > of ccd and vinum. zfs in particular is a major advance. If you aren't > aware of it's advantages, take the time to read the zfs & zpool man > pages, at the very least, before committing to geom (not that geom > isn't pretty slick in and of itself, but zfs solves a more pressing > problem). > > Hmm. Come to think of it, you ought to be able to use gstrip to stripe > your disks, then put a zpool on that, which should get you the > advantages of zfs with a striped disk. But that does seem odd to me. I'll definitely be looking at ZFS. Thanks for the info. I've never been dead set on any option in particular, it's just that I wasn't aware of anything that would do what I wanted that wasn't just simple RAID0 and manual backups.