From owner-freebsd-questions@FreeBSD.ORG Thu Jul 22 07:59:55 2010 Return-Path: Delivered-To: freebsd-questions@freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2001:4f8:fff6::34]) by hub.freebsd.org (Postfix) with ESMTP id 471141065674 for ; Thu, 22 Jul 2010 07:59:55 +0000 (UTC) (envelope-from kraduk@googlemail.com) Received: from mail-fx0-f54.google.com (mail-fx0-f54.google.com [209.85.161.54]) by mx1.freebsd.org (Postfix) with ESMTP id C5F088FC1C for ; Thu, 22 Jul 2010 07:59:54 +0000 (UTC) Received: by fxm13 with SMTP id 13so4507379fxm.13 for ; Thu, 22 Jul 2010 00:59:53 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=googlemail.com; s=gamma; h=domainkey-signature:mime-version:received:received:in-reply-to :references:date:message-id:subject:from:to:cc:content-type; bh=cxpIGFcxs5/j/+qpTVdoBPrWqF5PZYN27h5QHnzft+I=; b=CSI1WdJsQkb5Z1byr+qN9qVOmUo3F8b/IJIjFCePQGap7rjCak+xX1lFeNWsFw8tgf b0ZjimKdXvfJ1PEYH5p2gA9lIPUo10nupOH3dm506l3Z6wzqWBfifKzqHPzWZx31Wl+9 ClkaSPw85+zVI11AXQH9r8zPlBZYUP6avbrrE= DomainKey-Signature: a=rsa-sha1; c=nofws; d=googlemail.com; s=gamma; h=mime-version:in-reply-to:references:date:message-id:subject:from:to :cc:content-type; b=Y+NQ68+LXn9AhnyOndK/mRRExB+EeK+W094jdcKyOKPBYQ/JKNKNF5FE8ck096s/vU EVLlS/lbz4esAf+bno2F9IEKU2ZaGbXtA5JyF6v4P/tCHR2EQBU7fPulCg3d44o3j5r8 w/bGsCcQ8jV/Mmg+kf6Cgm0mcUSP4CImKndSA= MIME-Version: 1.0 Received: by 10.239.180.140 with SMTP id i12mr91769hbg.140.1279785593418; Thu, 22 Jul 2010 00:59:53 -0700 (PDT) Received: by 10.239.160.201 with HTTP; Thu, 22 Jul 2010 00:59:53 -0700 (PDT) In-Reply-To: References: <4C452644.6060508@comclark.com> <20100720134205.3168f4f1@scorpio> <4C45EA1C.6070601@comclark.com> <20100720153209.74ec26e6@scorpio> <4C45FCE1.7010006@comclark.com> <20100720163651.0daf727d@scorpio> <4C46BAAD.5000507@unsane.co.uk> <4C46C356.6000101@comclark.com> Date: Thu, 22 Jul 2010 08:59:53 +0100 Message-ID: From: krad To: Adam Vande More Content-Type: text/plain; charset=ISO-8859-1 X-Content-Filtered-By: Mailman/MimeDel 2.1.5 Cc: Aiza , freebsd-questions@freebsd.org, Vincent Hoffman Subject: Re: new jail utility is available. announcement. X-BeenThere: freebsd-questions@freebsd.org X-Mailman-Version: 2.1.5 Precedence: list List-Id: User questions List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Thu, 22 Jul 2010 07:59:55 -0000 On 22 July 2010 02:16, Adam Vande More wrote: > On Wed, Jul 21, 2010 at 4:52 AM, Aiza wrote: > > > > > Not yet, when I have a spare box I might, although I quite like using > >> zfs for jails as you can limit the disk usage dynamically per zfs > >> filesystem and I didnt see any support there yet, even basic support > >> like there is with ezjail would be nice. > >> > >> > > Zfs was left out because its over kill. Sparse image jails gives the same > > protection at a 10th of the overhead. > > > You didn't factor in slowness due to having a file-backed filesystem. > While > probably pretty low, it's definitely there and not good in an io heavy > jail. Also, the host will have to mount a UFS based FS, and cache it so > you're going to have increased memory usage. > > Ideal setup for an io intensive jaill(eg database) is to be bound to > compressed ZFS file-system, not a sparse image located on such a setup. > > even better when we get zfs v22 as we will have dedup. THat has its own memory issues though. > I'm not sure what overhead you're referring too. If it's hard to tie into > your application, you are probably correct, but from a host perspective you > are increasing overhead. > > There are advantages to sparse or raw file as well, it would be nice to > have > a choice. > > -- > Adam Vande More > _______________________________________________ > freebsd-questions@freebsd.org mailing list > http://lists.freebsd.org/mailman/listinfo/freebsd-questions > To unsubscribe, send any mail to " > freebsd-questions-unsubscribe@freebsd.org" >