Re: linux raid vs hw raid

From	Tim Watts <tw@dionic.net>
Newsgroups	comp.os.linux.misc
Subject	Re: linux raid vs hw raid
Followup-To	comp.os.linux.misc
Date	2011-04-10 11:28 +0100
Organization	A noiseless patient Spider
Message-ID	<8cd878-31t.ln1@squidward.dionic.net> (permalink)
References	<fc0t68x5ci.ln2@goaway.wombat.san-francisco.ca.us> <4da02d29@news.broadpark.no> <slrniq2a2h.8od.spamtrap42@one.localnet> <2is778x1hp.ln2@news.homelinux.net> <kf03q695hp4bgpbh8fr490i4lt4jv4vjcc@4ax.com>

Followups directed to: comp.os.linux.misc

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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

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Thread

linux raid vs hw raid Keith Keller <kkeller-usenet@wombat.san-francisco.ca.us> - 2011-04-05 19:39 -0700
  Re: linux raid vs hw raid Tim Watts <tw@dionic.net> - 2011-04-06 08:01 +0100
    Re: linux raid vs hw raid David Brown <david@westcontrol.removethisbit.com> - 2011-04-06 10:03 +0200
      Re: linux raid vs hw raid Keith Keller <kkeller-usenet@wombat.san-francisco.ca.us> - 2011-04-06 14:00 -0700
        Re: linux raid vs hw raid David Brown <david.brown@removethis.hesbynett.no> - 2011-04-06 23:42 +0200
        Re: linux raid vs hw raid Grant <omg@grrr.id.au> - 2011-04-08 10:45 +1000
          Re: linux raid vs hw raid David Brown <david@westcontrol.removethisbit.com> - 2011-04-08 11:12 +0200
            Re: linux raid vs hw raid Keith Keller <kkeller-usenet@wombat.san-francisco.ca.us> - 2011-04-08 08:22 -0700
              Re: linux raid vs hw raid Grant <omg@grrr.id.au> - 2011-04-09 09:51 +1000
                Re: linux raid vs hw raid Keith Keller <kkeller-usenet@wombat.san-francisco.ca.us> - 2011-04-08 17:10 -0700
                Re: linux raid vs hw raid David Brown <david.brown@removethis.hesbynett.no> - 2011-04-09 13:14 +0200
            Re: linux raid vs hw raid Grant <omg@grrr.id.au> - 2011-04-09 09:47 +1000
              Re: linux raid vs hw raid David Brown <david.brown@removethis.hesbynett.no> - 2011-04-09 13:55 +0200
          Re: linux raid vs hw raid Tris Orendorff <triso@remove-me.cogeco.ca> - 2011-04-12 18:04 +0000
            Re: linux raid vs hw raid Keith Keller <kkeller-usenet@wombat.san-francisco.ca.us> - 2011-04-12 11:34 -0700
              Re: linux raid vs hw raid The Natural Philosopher <tnp@invalid.invalid> - 2011-04-12 21:13 +0100
                Re: linux raid vs hw raid David Brown <david@westcontrol.removethisbit.com> - 2011-04-13 09:45 +0200
                Re: linux raid vs hw raid Grant <omg@grrr.id.au> - 2011-04-14 13:42 +1000
                Re: linux raid vs hw raid David Brown <david@westcontrol.removethisbit.com> - 2011-04-14 09:15 +0200
                Re: linux raid vs hw raid Grant <omg@grrr.id.au> - 2011-04-15 08:03 +1000
                Re: linux raid vs hw raid Tim Watts <tw@dionic.net> - 2011-04-15 07:22 +0100
                Re: linux raid vs hw raid David Brown <david@westcontrol.removethisbit.com> - 2011-04-15 09:28 +0200
                Re: linux raid vs hw raid Grant <omg@grrr.id.au> - 2011-04-19 11:20 +1000
              Re: linux raid vs hw raid Grant <omg@grrr.id.au> - 2011-04-14 13:38 +1000
                Re: linux raid vs hw raid Keith Keller <kkeller-usenet@wombat.san-francisco.ca.us> - 2011-04-13 21:49 -0700
            Re: linux raid vs hw raid Grant <omg@grrr.id.au> - 2011-04-14 13:34 +1000
              Re: linux raid vs hw raid Tris Orendorff <triso@remove-me.cogeco.ca> - 2011-04-15 21:59 +0000
                Re: linux raid vs hw raid "Peter J. Holzer" <hjp-usenet2@hjp.at> - 2011-04-16 00:56 +0200
                Re: linux raid vs hw raid The Natural Philosopher <tnp@invalid.invalid> - 2011-04-16 01:32 +0100
  Re: linux raid vs hw raid Tauno Voipio <tauno.voipio@notused.fi.invalid> - 2011-04-08 21:38 +0300
    Re: linux raid vs hw raid Grant <omg@grrr.id.au> - 2011-04-09 09:53 +1000
  Re: linux raid vs hw raid KR <kristian.rasmussen@broadpark.no.spam.com> - 2011-04-09 11:56 +0200
    Re: linux raid vs hw raid Keith Keller <kkeller-usenet@wombat.san-francisco.ca.us> - 2011-04-09 10:32 -0700
      Re: linux raid vs hw raid Grant <omg@grrr.id.au> - 2011-04-10 11:12 +1000
        Re: linux raid vs hw raid Keith Keller <kkeller-usenet@wombat.san-francisco.ca.us> - 2011-04-09 18:59 -0700
          Re: linux raid vs hw raid KR <kristian.rasmussen@broadpark.no.spam.com> - 2011-04-10 04:32 +0200
            Re: linux raid vs hw raid Grant <omg@grrr.id.au> - 2011-04-10 12:46 +1000
              Re: linux raid vs hw raid Keith Keller <kkeller-usenet@wombat.san-francisco.ca.us> - 2011-04-09 20:39 -0700
    Re: linux raid vs hw raid Robert Riches <spamtrap42@jacob21819.net> - 2011-04-10 03:47 +0000
      Re: linux raid vs hw raid Balwinder S Dheeman <bsd.SANSPAM@anu.homelinux.net> - 2011-04-10 11:11 +0530
        Re: linux raid vs hw raid Keith Keller <kkeller-usenet@wombat.san-francisco.ca.us> - 2011-04-09 23:29 -0700
          Re: linux raid vs hw raid Balwinder S Dheeman <bsd.SANSPAM@anu.homelinux.net> - 2011-04-10 14:05 +0530
        Re: linux raid vs hw raid Grant <omg@grrr.id.au> - 2011-04-10 20:16 +1000
          Re: linux raid vs hw raid Tim Watts <tw@dionic.net> - 2011-04-10 11:28 +0100
          Re: linux raid vs hw raid Balwinder S Dheeman <bsd.SANSPAM@anu.homelinux.net> - 2011-04-10 19:43 +0530
        Re: linux raid vs hw raid Robert Riches <spamtrap42@jacob21819.net> - 2011-04-12 03:44 +0000
          Re: linux raid vs hw raid Balwinder S Dheeman <bsd.SANSPAM@anu.homelinux.net> - 2011-04-12 13:56 +0530
      Re: linux raid vs hw raid Grant <omg@grrr.id.au> - 2011-04-10 20:09 +1000
        Re: linux raid vs hw raid Robert Riches <spamtrap42@jacob21819.net> - 2011-04-12 03:37 +0000

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