From owner-freebsd-questions@freebsd.org Wed Sep 9 16:18:45 2015 Return-Path: Delivered-To: freebsd-questions@mailman.ysv.freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2001:1900:2254:206a::19:1]) by mailman.ysv.freebsd.org (Postfix) with ESMTP id 6B251A000F5 for ; Wed, 9 Sep 2015 16:18:45 +0000 (UTC) (envelope-from wam@hiwaay.net) Received: from fly.hiwaay.net (fly.hiwaay.net [216.180.54.1]) (using TLSv1 with cipher DHE-RSA-AES256-SHA (256/256 bits)) (Client did not present a certificate) by mx1.freebsd.org (Postfix) with ESMTPS id 3B8941360 for ; Wed, 9 Sep 2015 16:18:44 +0000 (UTC) (envelope-from wam@hiwaay.net) Received: from kabini1.local (dynamic-216-186-222-143.knology.net [216.186.222.143] (may be forged)) (authenticated bits=0) by fly.hiwaay.net (8.13.8/8.13.8/fly) with ESMTP id t89GIgu4029966 (version=TLSv1/SSLv3 cipher=DHE-RSA-AES128-SHA bits=128 verify=NO) for ; Wed, 9 Sep 2015 11:18:43 -0500 Subject: Re: Storage question To: freebsd-questions@freebsd.org References: <55EF3D23.5060009@hiwaay.net> <20150908220639.20412cbd@gumby.homeunix.com> <55EF5409.8020007@yahoo.com> <55EFC2DA.3020101@hiwaay.net> <5EB5C2C2-575B-40BD-BF6A-85F396C058FE@kraus-haus.org> <55F058FC.6080204@hiwaay.net> <55F05A55.1080500@physics.umn.edu> From: "William A. Mahaffey III" Message-ID: <55F05BE2.4000004@hiwaay.net> Date: Wed, 9 Sep 2015 11:24:12 -0453.75 User-Agent: Mozilla/5.0 (X11; FreeBSD amd64; rv:38.0) Gecko/20100101 Thunderbird/38.2.0 MIME-Version: 1.0 In-Reply-To: <55F05A55.1080500@physics.umn.edu> Content-Type: text/plain; charset=windows-1252; format=flowed Content-Transfer-Encoding: 7bit X-BeenThere: freebsd-questions@freebsd.org X-Mailman-Version: 2.1.20 Precedence: list List-Id: User questions List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Wed, 09 Sep 2015 16:18:45 -0000 On 09/09/15 11:18, Graham Allan wrote: > On 9/9/2015 11:04 AM, William A. Mahaffey III wrote: >> >> Hmmmm .... could you amplify on that point about no compression w/ >> MythTV ? This box will have 16 GB of RAM & 32 GB of swap, so I *think* I >> will be OK on RAM. I will probably stream video over my network most of >> the time, but might be using the ZFS as well .... I just got done >> copying the stuff from >> https://wiki.freebsd.org/RootOnZFS/GPTZFSBoot/9.0-RELEASE verbatim into >> 2 shell scripts to automate the setup, but if there are known issues w/ >> MythTV & ZFS+compression, more rethinking will be needed. > > Just that media files tend not to compress further. I have ZFS on my > home NAS box too, and though I do still have compression enabled I > shouldn't because the compression ratio is 1.00! > > I also wouldn't hesitate to use ZFS on a machine with 16G or 8G RAM. > > The system installer does a fine job of setting it up for you > (including a separate partition for swap). > > G. Hmmmm .... OK, I guess I could not enable compression on /home, that seems feasible. If all it is is a waste of cycles I can live w/ that (if everything else is OK), I was just worried there might be some more dire issue .... -- William A. Mahaffey III ---------------------------------------------------------------------- "The M1 Garand is without doubt the finest implement of war ever devised by man." -- Gen. George S. Patton Jr.