From owner-freebsd-questions@freebsd.org Wed Sep 9 20:02:38 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 04D96A003C9 for ; Wed, 9 Sep 2015 20:02:38 +0000 (UTC) (envelope-from paul@kraus-haus.org) Received: from mail-qg0-f54.google.com (mail-qg0-f54.google.com [209.85.192.54]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-GCM-SHA256 (128/128 bits)) (Client CN "smtp.gmail.com", Issuer "Google Internet Authority G2" (verified OK)) by mx1.freebsd.org (Postfix) with ESMTPS id BB9A51EDF for ; Wed, 9 Sep 2015 20:02:37 +0000 (UTC) (envelope-from paul@kraus-haus.org) Received: by qgx61 with SMTP id 61so17966867qgx.3 for ; Wed, 09 Sep 2015 13:02:35 -0700 (PDT) X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20130820; h=x-gm-message-state:content-type:mime-version:subject:from :in-reply-to:date:content-transfer-encoding:message-id:references:to; bh=LTRKcEPDELMULi0RXqut72FKo/F6s07UX8sh7hH6CCg=; b=jQWYZRMie51YZ74dfS+/GjbVX6yC9GxlSOOi38AFb1+NiJhcQx7lxLJEldKEgEW12r vZ0y9pwQHeucjzI+5qPZkoXtW+uq1P+4Vqx7osuiynjir+/r0qaTDzFuPKh46B1Fsdkk HaiD63GPAG2TRG/eAy+HWcusiRmyjQA9EpkyFaxrV81QTIvUTuOn4o3qwz/KMIJjajrk dZSzhEB/h49SEri83qodGN5tDRrh/C2ZkqybkUx6w40PdjYZ+HT9lo3oLD4PPzZiBKgI BzqhVv828BkP2X61DU5iCeHn91QGTYxdC2Qa6875PWdCmCkDB/468vO7L2rBB9Yu8QGV St6Q== X-Gm-Message-State: ALoCoQkANHe4K/MRbsou7c0CJYDFcrQA2F6VhryFJhwfwt44ki308JpAoUPKadsugTLSxR6EYTzH X-Received: by 10.140.37.101 with SMTP id q92mr46705630qgq.3.1441828955861; Wed, 09 Sep 2015 13:02:35 -0700 (PDT) Received: from [172.24.6.204] (rrcs-24-103-86-178.nyc.biz.rr.com. [24.103.86.178]) by smtp.gmail.com with ESMTPSA id 103sm4509357qgx.35.2015.09.09.13.02.34 (version=TLSv1 cipher=ECDHE-RSA-RC4-SHA bits=128/128); Wed, 09 Sep 2015 13:02:34 -0700 (PDT) Content-Type: text/plain; charset=us-ascii Mime-Version: 1.0 (Mac OS X Mail 7.3 \(1878.6\)) Subject: Re: Storage question From: Paul Kraus In-Reply-To: <55F058FC.6080204@hiwaay.net> Date: Wed, 9 Sep 2015 16:02:31 -0400 Content-Transfer-Encoding: quoted-printable Message-Id: 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> To: FreeBSD Questions X-Mailer: Apple Mail (2.1878.6) 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 20:02:38 -0000 On Sep 9, 2015, at 12:04, William A. Mahaffey III = wrote: > Hmmmm .... could you amplify on that point about no compression w/ = MythTV ? If MythTV is using any of the normal sorts of video files, they are = already compressed. Asking ZFS to perform additional compression (even = if just to figure out that it gains nothing) is a waste of cycles. > This box will have 16 GB of RAM & 32 GB of swap, so I *think* I will = be OK on RAM. You should be fine with 16 GB RAM for a streaming box. > 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 = fromhttps://wiki.freebsd.org/RootOnZFS/GPTZFSBoot/9.0-RELEASE verbatim = into 2 shell scripts to automate the setup, I would never follow any instructions verbatim unless they did _exactly_ = what I needed. I will also point out that while there are only one set = of instructions for 9.x, the necessary steps changed as the minor revs = of 9 went by. The instructions tended to apply to the latest and if you = did not have a cache of the older instructions and needed to recover an = older release you were in trouble. Follow the instructions through a few times by hand. Understand what = they are doing and _why_, then script what _you_ need to do. For = example, I never used as many different datasets under /var as indicated = on that page. I just did not need that degree of control. You may need = (or want) more. > but if there are known issues w/ MythTV & ZFS+compression, more = rethinking will be needed. -- Paul Kraus paul@kraus-haus.org