From owner-freebsd-questions@FreeBSD.ORG Sun Aug 24 17:04:01 2014 Return-Path: Delivered-To: freebsd-questions@freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2001:1900:2254:206a::19:1]) (using TLSv1 with cipher ADH-AES256-SHA (256/256 bits)) (No client certificate requested) by hub.freebsd.org (Postfix) with ESMTPS id A93F9358 for ; Sun, 24 Aug 2014 17:04:01 +0000 (UTC) Received: from mail-qc0-f177.google.com (mail-qc0-f177.google.com [209.85.216.177]) (using TLSv1 with cipher ECDHE-RSA-RC4-SHA (128/128 bits)) (Client CN "smtp.gmail.com", Issuer "Google Internet Authority G2" (verified OK)) by mx1.freebsd.org (Postfix) with ESMTPS id 63064301E for ; Sun, 24 Aug 2014 17:04:00 +0000 (UTC) Received: by mail-qc0-f177.google.com with SMTP id x13so12847309qcv.22 for ; Sun, 24 Aug 2014 10:03:59 -0700 (PDT) X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20130820; h=x-gm-message-state:subject:mime-version:content-type:from :in-reply-to:date:cc:content-transfer-encoding:message-id:references :to; bh=6MQVkN/h+17lD8cjIcD1fjRIUr+b5b9ai94Xhufp/+k=; b=fse6gSfe/GrH8oADnaRbJ9kJJLuBl9uKUio+S+xGWqjVWcDM+8nwDflT9V0pCDcqQB N/2/gX+302stKhA8AoNIHx2Ostm2za9C1k9R08JWD5nLivWJjHEKEcn5hfP0rXs20dz0 h6nBEU5j0mf4ybemTlXqlwmhyZgKAFVQ6eIxJSxLE3T5IMKpt0yI3BlVN9hUCmcUwEZA FCLpUfZ51Wq+V91ZU1dcq6JiFuRBI85kvju6SGQov2nqwX7/CvyJPyh1NS7/0JngV6ic Z0gh4j0P6NWImaWnjay1aXJ6pvJc8WwX8LqzPtDDkl0KI0Xmp2gfRtYzwhDC7Smo5j4c f/vw== X-Gm-Message-State: ALoCoQny1+qCFhFvtysZXUFx1g/j1AbgJG/2NYlkCwApXcP0LYvK07P/479E/Xssm4BsfxrRdtJy X-Received: by 10.224.115.134 with SMTP id i6mr27599678qaq.71.1408899401816; Sun, 24 Aug 2014 09:56:41 -0700 (PDT) Received: from [192.168.2.65] ([96.236.21.80]) by mx.google.com with ESMTPSA id l7sm73411065qac.42.2014.08.24.09.56.40 for (version=TLSv1 cipher=ECDHE-RSA-RC4-SHA bits=128/128); Sun, 24 Aug 2014 09:56:41 -0700 (PDT) Subject: Re: some ZFS questions Mime-Version: 1.0 (Mac OS X Mail 7.3 \(1878.6\)) Content-Type: text/plain; charset=us-ascii From: Paul Kraus In-Reply-To: <201408241019.s7OAJoBw025610@sdf.org> Date: Sun, 24 Aug 2014 12:56:42 -0400 Content-Transfer-Encoding: quoted-printable Message-Id: <022EBB92-5E27-4198-8FD7-1B00B35E5D50@kraus-haus.org> References: <201408070816.s778G9ug015988@sdf.org> <53E3A836.9080904@my.hennepintech.edu> <201408080706.s78765xs022311@sdf.org> <201408211033.s7LAXWbN006985@sdf.org> <201408241019.s7OAJoBw025610@sdf.org> To: Scott Bennett X-Mailer: Apple Mail (2.1878.6) Cc: freebsd-questions@freebsd.org X-BeenThere: freebsd-questions@freebsd.org X-Mailman-Version: 2.1.18-1 Precedence: list List-Id: User questions List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Sun, 24 Aug 2014 17:04:01 -0000 On Aug 24, 2014, at 6:19, Scott Bennett wrote: > Paul Kraus wrote: >> When you create a zpool you get both the zpool and a zfs dataset of = the same name. You can use this dataset, but if I am going to be = creating *any* other datasets in this zpool I do not. I only use = hierarchical datasets in very specific ways as there are rules on = inheritance and mount points. For example: >>=20 > Oh. I hadn't gleaned that from the man pages or other = documentation. > Thanks for pointing it out. It is not very obvious, and the downsides are decidedly not obvious. I = learned to do what I now do through trail and error and many painful = reconfigurations over the years. The biggest thing to watch out for is = hidden (non-obvious) dependencies due to the hierarchical nature of = datasets created within (on top of ?) other datasets.=20 -- Paul Kraus paul@kraus-haus.org