From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from pigeon.gentoo.org ([208.92.234.80] helo=lists.gentoo.org) by finch.gentoo.org with esmtp (Exim 4.60) (envelope-from ) id 1OloKT-0001U5-9z for garchives@archives.gentoo.org; Wed, 18 Aug 2010 19:29:41 +0000 Received: from pigeon.gentoo.org (localhost [127.0.0.1]) by pigeon.gentoo.org (Postfix) with SMTP id 1D2C5E0AAF; Wed, 18 Aug 2010 19:28:46 +0000 (UTC) Received: from relay02-haj2.antispameurope.com (relay02-haj2.antispameurope.com [83.246.65.52]) by pigeon.gentoo.org (Postfix) with ESMTP id BFCB9E0AAF for ; Wed, 18 Aug 2010 19:28:45 +0000 (UTC) Received: by relay02-haj2.antispameurope.com (ASE-Secure-MTA, from userid 1000) id 71265194030; Wed, 18 Aug 2010 21:28:44 +0200 (CEST) Received: from pluto.fokus.fraunhofer.de (pluto.fokus.fraunhofer.de [195.37.77.164]) (using TLSv1 with cipher DHE-RSA-AES256-SHA (256/256 bits)) (No client certificate requested) by relay02-haj2.antispameurope.com (ASE-Secure-MTA) with ESMTP id BA36F194021 for ; Wed, 18 Aug 2010 21:28:43 +0200 (CEST) Received: from EXCHSRV.fokus.fraunhofer.de (bohr.fokus.fraunhofer.de [10.147.9.231]) by pluto.fokus.fraunhofer.de (8.14.2/8.14.2) with SMTP id o7IJShat005562 for ; Wed, 18 Aug 2010 21:28:43 +0200 (MEST) Received: from rigel ([10.147.65.195]) by EXCHSRV.fokus.fraunhofer.de with Microsoft SMTPSVC(6.0.3790.3959); Wed, 18 Aug 2010 21:28:43 +0200 Date: Wed, 18 Aug 2010 21:28:43 +0200 From: Joerg.Schilling@fokus.fraunhofer.de (Joerg Schilling) To: gentoo-user@lists.gentoo.org Subject: Re: [gentoo-user] How to build a time machine on Gentoo Message-ID: <4c6c346b.ZdWO+lhxI8L2276q%Joerg.Schilling@fokus.fraunhofer.de> References: <4C6A7D23.9030007@gmx.de> <20100818123424.1a1218b4@zaphod.digimed.co.uk> <4C6BF3F0.6070803@gmail.com> <4C6C2850.2040007@gmail.com> <4c6c2b40.blKUSwt9m/Tv9V/r%Joerg.Schilling@fokus.fraunhofer.de> In-Reply-To: User-Agent: nail 11.22 3/20/05 Precedence: bulk List-Post: List-Help: List-Unsubscribe: List-Subscribe: List-Id: Gentoo Linux mail X-BeenThere: gentoo-user@lists.gentoo.org Reply-to: gentoo-user@lists.gentoo.org MIME-Version: 1.0 Content-Type: text/plain; charset=ISO-8859-1 X-OriginalArrivalTime: 18 Aug 2010 19:28:43.0042 (UTC) FILETIME=[919DD020:01CB3F0B] Content-Transfer-Encoding: quoted-printable X-Archives-Salt: 8a43ad91-2c22-458f-a789-2b1f71bd6c8d X-Archives-Hash: 871426541c8954ed2bc7d1b8e0b78182 Nganon wrote: > > Not really. ZFS is only available on Solaris right now. I seem to > > > remember it was running on one of the BSD's, too, since it's a matt= er of > > > licensing that is the hurdle of greatest height. I've only played w= ith > > > BTRFS on my dev box and the simple workout I gave it did not tax it= in > > > any way--it worked okay. > > > > ZFS has a very free license. This was the reason, why it could be por= ted to > > the > > BSDs. So why do you believe there is a "license hurdle"? > > > > > Because ZFS is licensed with Sun CDDL, which is incompatible with GNU G= PL, > so it cant be distributed with Linux kernel. That's why it is ported to > FUSE. The CDDL is as incompatible to the GPL as the BSD license. Both do not allow to change the license of the code and for this reason, = a code=20 combination cannot happen as a "derivative work". If you like to create a= =20 derivative work from a GPL program and BSD code from another person, you = would=20 need to declare the code from another person to be _your_ "modification".= This is something that would violate the Copyright law. The GPL however permits code combinations as "collective work". As the GP= L=20 then is only valir for the GPL part of the whole, this does not cause=20 "incompatibilities". > Also note: btrfs now is three years old. ZFS was started aprox. 10 yea= rs > > ago. > > For this reason, btrfs is expected to need another 7 years to readh t= he > > level > > of stability currently seen with ZFS. > > > > > ZFS was announced on 2004. So approximately six year, not ten. Besides, > things in > computer world do not always work that linearly, you know. In 2002, the ZFS developers have already been forced to have their=20 homedirectories on ZFS. In 2004, ZFS was already under test in universiti= es. J=F6rg --=20 EMail:joerg@schily.isdn.cs.tu-berlin.de (home) J=F6rg Schilling D-13353 = Berlin js@cs.tu-berlin.de (uni) =20 joerg.schilling@fokus.fraunhofer.de (work) Blog: http://schily.blo= gspot.com/ URL: http://cdrecord.berlios.de/private/ ftp://ftp.berlios.de/pub/schil= y