From owner-freebsd-current@FreeBSD.ORG Wed Mar 30 07:53:12 2011 Return-Path: Delivered-To: freebsd-current@freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2001:4f8:fff6::34]) by hub.freebsd.org (Postfix) with ESMTP id D7D021065672 for ; Wed, 30 Mar 2011 07:53:12 +0000 (UTC) (envelope-from alexander@leidinger.net) Received: from mail.ebusiness-leidinger.de (mail.ebusiness-leidinger.de [217.11.53.44]) by mx1.freebsd.org (Postfix) with ESMTP id 53B9D8FC15 for ; Wed, 30 Mar 2011 07:53:12 +0000 (UTC) Received: from outgoing.leidinger.net (p5B154942.dip.t-dialin.net [91.21.73.66]) by mail.ebusiness-leidinger.de (Postfix) with ESMTPSA id F0EC9844015; Wed, 30 Mar 2011 09:53:07 +0200 (CEST) Received: from webmail.leidinger.net (webmail.Leidinger.net [IPv6:fd73:10c7:2053:1::2:102]) by outgoing.leidinger.net (Postfix) with ESMTP id E4BCB1930; Wed, 30 Mar 2011 09:53:04 +0200 (CEST) Received: (from www@localhost) by webmail.leidinger.net (8.14.4/8.13.8/Submit) id p2U7r46x054939; Wed, 30 Mar 2011 09:53:04 +0200 (CEST) (envelope-from Alexander@Leidinger.net) Received: from pslux.ec.europa.eu (pslux.ec.europa.eu [158.169.9.14]) by webmail.leidinger.net (Horde Framework) with HTTP; Wed, 30 Mar 2011 09:53:04 +0200 Message-ID: <20110330095304.990627vk8z9lvdz4@webmail.leidinger.net> Date: Wed, 30 Mar 2011 09:53:04 +0200 From: Alexander Leidinger To: George Kontostanos References: In-Reply-To: MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8; DelSp="Yes"; format="flowed" Content-Disposition: inline Content-Transfer-Encoding: 7bit User-Agent: Dynamic Internet Messaging Program (DIMP) H3 (1.1.6) X-EBL-MailScanner-Information: Please contact the ISP for more information X-EBL-MailScanner-ID: F0EC9844015.A1051 X-EBL-MailScanner: Found to be clean X-EBL-MailScanner-SpamCheck: not spam, spamhaus-ZEN, SpamAssassin (not cached, score=0.077, required 6, autolearn=disabled, TW_ZJ 0.08) X-EBL-MailScanner-From: alexander@leidinger.net X-EBL-MailScanner-Watermark: 1302076389.29819@Cl+vmkV9/PVLwhkmv3+6QA X-EBL-Spam-Status: No Cc: freebsd-current@freebsd.org Subject: Re: ZFS dedup and temporary freeze X-BeenThere: freebsd-current@freebsd.org X-Mailman-Version: 2.1.5 Precedence: list List-Id: Discussions about the use of FreeBSD-current List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Wed, 30 Mar 2011 07:53:12 -0000 Quoting George Kontostanos (from Tue, 29 Mar 2011 17:57:49 +0300): > I thought that jails would be a good candidate for dedup. So far I am using > it without any issues in my /usr/src and /virtualBox directories. No idea about your problem, but ezjail is already doing some dedup. The basejail is the dedup-place, and the jails do a null-mount of it. Inside the jails are only some links to the basejail. So if you do not install the same programs (the same packages, so make sure there is no different compile timestamp (some programs have this) inside the newly generated binaries) or data inside the jail-specific area, you will not have a benefit from this. Bye, Alexander. -- Real programmers never work 9 to 5. If any real programmers are around at 9 a.m., it's because they were up all night. http://www.Leidinger.net Alexander @ Leidinger.net: PGP ID = B0063FE7 http://www.FreeBSD.org netchild @ FreeBSD.org : PGP ID = 72077137