Path: csiph.com!x330-a1.tempe.blueboxinc.net!usenet.pasdenom.info!news.albasani.net!eternal-september.org!feeder.eternal-september.org!.POSTED!not-for-mail From: Tim Watts Newsgroups: comp.os.linux.misc Subject: Re: linux raid vs hw raid Followup-To: comp.os.linux.misc Date: Sun, 10 Apr 2011 11:28:55 +0100 Organization: A noiseless patient Spider Lines: 35 Message-ID: <8cd878-31t.ln1@squidward.dionic.net> References: <4da02d29@news.broadpark.no> <2is778x1hp.ln2@news.homelinux.net> Mime-Version: 1.0 Content-Type: text/plain; charset="ISO-8859-1" Content-Transfer-Encoding: 7Bit Injection-Info: mx02.eternal-september.org; posting-host="6oIlEBqCjOm0MjsSUEk5CA"; logging-data="12094"; mail-complaints-to="abuse@eternal-september.org"; posting-account="U2FsdGVkX18qbcNaf+wybzgU+jRr6LwU1F5vAOliOJU=" User-Agent: KNode/4.4.6 Cancel-Lock: sha1:GuNj8UT/9l8Uq6EyXLJZSdRqRXA= Xref: x330-a1.tempe.blueboxinc.net comp.os.linux.misc:672 Grant wrote: > The simple answer is that there are many filesystems in the kernel, why > is ZFS not offered as well? It's not a "forgot to mention", ZFS is not > available as part of the kernel since the authors haven't bothered to > put it there. IBM and SGI have contributed filesystems to the kernel. > Because, sadly, Sun (as is their right) released ZFS under the CDDL license which is strongly believed to be incompatible with the GPL. Therefore the only way to get ZFS into linux is to either: 1) Renegotiate the ZFS license - good luck with talking to Oracle there. 2) Use a weak linkage - which is what FUSE allows 3) Roll your own for each deployment. There is another option for a "Linux like OS" which is to use debian/kfreebsd which is a regular debian but with linux ripped out and freebsd (which can and does carry ZFS) wedged in. Not sure as to the maturity of that yet though. Another option is wait until BTRFS grows RAID5/6 like abilities (it has RAID1 level redundancy already) - and gets stable. I don't think the wait will be that long - I've already abused it to death for all my laptop filesystems and it's doing well (better than Reiserfs ever did at a similar stage of its life cycle). Cheers Tim -- Tim Watts