From owner-freebsd-current@FreeBSD.ORG Wed Mar 30 10:18:32 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 417BE106567F for ; Wed, 30 Mar 2011 10:18:32 +0000 (UTC) (envelope-from gkontos.mail@gmail.com) Received: from mail-iy0-f182.google.com (mail-iy0-f182.google.com [209.85.210.182]) by mx1.freebsd.org (Postfix) with ESMTP id 0731D8FC0A for ; Wed, 30 Mar 2011 10:18:31 +0000 (UTC) Received: by iyj12 with SMTP id 12so1400937iyj.13 for ; Wed, 30 Mar 2011 03:18:31 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=gamma; h=domainkey-signature:mime-version:in-reply-to:references:date :message-id:subject:from:to:cc:content-type; bh=AzO2PnpZw/8fqCkJw5u0psv/rmdvfbnnr3rKCMFcQt0=; b=TzKnGZEIZXedbCuAxJRdvBbS1WYdcN6wY3xm5KYd4vf/v+YL6vuyfU+smwjO7us2Ui AiA+/xUrG6FlJPnq9BxxtmUNM/xj5MjAiOYCYIUDIlso+IHAlr5d9jK6DEqlgCz7seq+ Drt3I8FaFtKibKRw6DPvFHHKIO2+NGef2S8TQ= DomainKey-Signature: a=rsa-sha1; c=nofws; d=gmail.com; s=gamma; h=mime-version:in-reply-to:references:date:message-id:subject:from:to :cc:content-type; b=VDXu3y/itrN2VlqoBqEK1UaQIBiH29UyChZxbA25rKzXWT0kCrtEJZk6nMQUvQggUd kMsFLekA4QqN7IgvzSZN0gmBQ6JTJkqqnHJuG45GcvaQVJHecSyK64uwA8Ome5GLlSmq 6BJDFZLKdcu501rXAJ5ViX0xzb1aFCpXRNuCg= MIME-Version: 1.0 Received: by 10.231.184.5 with SMTP id ci5mr1093665ibb.90.1301480311147; Wed, 30 Mar 2011 03:18:31 -0700 (PDT) Received: by 10.231.33.1 with HTTP; Wed, 30 Mar 2011 03:18:31 -0700 (PDT) In-Reply-To: <20110330095304.990627vk8z9lvdz4@webmail.leidinger.net> References: <20110330095304.990627vk8z9lvdz4@webmail.leidinger.net> Date: Wed, 30 Mar 2011 13:18:31 +0300 Message-ID: From: George Kontostanos To: Alexander Leidinger Content-Type: text/plain; charset=ISO-8859-1 X-Content-Filtered-By: Mailman/MimeDel 2.1.5 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 10:18:32 -0000 As far as I am aware ezjail has the option to use compression and disable access time updates. ezjail_zfs_properties="-o compression=lzjb -o atime=off" In my case the dedup option was turned on only in the basejail causing the system to temporarily freeze. Once the dedup option was removed everything went back to normal. What I am trying to figure out here is why did this occur. Thanks On Wed, Mar 30, 2011 at 10:53 AM, Alexander Leidinger < Alexander@leidinger.net> wrote: > 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 > -- George Kontostanos aisecure.net