From owner-freebsd-questions@FreeBSD.ORG Sun Aug 24 10:19:52 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 677E1DCC for ; Sun, 24 Aug 2014 10:19:52 +0000 (UTC) Received: from sdf.lonestar.org (mx.sdf.org [192.94.73.24]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (Client CN "mx.sdf.org", Issuer "SDF.ORG" (not verified)) by mx1.freebsd.org (Postfix) with ESMTPS id 448D13D7A for ; Sun, 24 Aug 2014 10:19:51 +0000 (UTC) Received: from sdf.org (IDENT:bennett@sdf.lonestar.org [192.94.73.15]) by sdf.lonestar.org (8.14.8/8.14.5) with ESMTP id s7OAJoUF019489 (using TLSv1/SSLv3 with cipher DHE-RSA-AES256-GCM-SHA384 (256 bits) verified NO); Sun, 24 Aug 2014 10:19:50 GMT Received: (from bennett@localhost) by sdf.org (8.14.8/8.12.8/Submit) id s7OAJoBw025610; Sun, 24 Aug 2014 05:19:50 -0500 (CDT) From: Scott Bennett Message-Id: <201408241019.s7OAJoBw025610@sdf.org> Date: Sun, 24 Aug 2014 05:19:50 -0500 To: paul@kraus-haus.org Subject: Re: some ZFS questions References: <201408070816.s778G9ug015988@sdf.org> <53E3A836.9080904@my.hennepintech.edu> <201408080706.s78765xs022311@sdf.org> <201408211033.s7LAXWbN006985@sdf.org> In-Reply-To: User-Agent: Heirloom mailx 12.4 7/29/08 MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Transfer-Encoding: 7bit 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 10:19:52 -0000 Paul Kraus wrote: > On Aug 21, 2014, at 6:33, Scott Bennett wrote: > > Paul Kraus wrote: > > >> How much does the geli encryption cost in terms of space and speed? Is there a strong reason to not encrypt ALL the data? It can be in different zfs datasets (the ZFS term for a filesystem). In fact, I am NOT a fan of using the base dataset that is created with every zpool; I always create addition zfs datasets below the root of the zpool. > > > > Copying a file from one .eli partition to another can easily run up > > to 25% on each of two cores of a Q6600. > > I didn't realize that there would be a "base data set"; I thought that > > one had to create at least one file system or zvol in a pool in order to > > use the space at all. > > 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: > Oh. I hadn't gleaned that from the man pages or other documentation. Thanks for pointing it out. Scott Bennett, Comm. ASMELG, CFIAG ********************************************************************** * Internet: bennett at sdf.org *xor* bennett at freeshell.org * *--------------------------------------------------------------------* * "A well regulated and disciplined militia, is at all times a good * * objection to the introduction of that bane of all free governments * * -- a standing army." * * -- Gov. John Hancock, New York Journal, 28 January 1790 * **********************************************************************