linux-kernel - Re: Please add ZFS support (from GPL sources)

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Message-ID: <d1af83620807210740vfef575bp73832fd95d803850@mail.gmail.com>
Date:	Mon, 21 Jul 2008 11:40:38 -0300
From:	"Kevin Winchester" <kjwinchester@...il.com>
To:	"Fred ." <eldmannen@...il.com>
Cc:	"Christoph Hellwig" <hch@...radead.org>,
	"Jeff Garzik" <jeff@...zik.org>,
	"Linux Kernel Mailing List" <linux-kernel@...r.kernel.org>,
	linux-fsdevel@...r.kernel.org
Subject: Re: Please add ZFS support (from GPL sources)

(Added back CCs)

On Mon, Jul 21, 2008 at 11:23 AM, Fred . <eldmannen@...il.com> wrote:
> On Mon, Jul 21, 2008 at 1:39 PM, Kevin Winchester
> <kjwinchester@...il.com> wrote:
>> On Mon, Jul 21, 2008 at 4:28 AM, Christoph Hellwig <hch@...radead.org> wrote:
>>> On Sun, Jul 20, 2008 at 09:35:45AM -0300, Kevin Winchester wrote:
>>>> If Fred declines, is anyone free to take you up on the offer?  I have
>>>> no filesystem experience and almost no experience with kernel code in
>>>> general, so I would not be anyone's first choice for a task like this.
>>>>  However, since it mainly appears to be an integration exercise (using
>>>> the code from GRUB and making it work in linux), it might well be
>>>> doable for me.  As a bonus, being highly inexperienced, I have no
>>>> expectations of doing anything correctly, and thus would not react
>>>> badly to lots of criticism.
>>>>
>>>> So to summarize - if anyone else would like to undertake this work,
>>>> they probably should.  But if no one has the time/will, then I would
>>>> be happy to give it a try.
>>>
>>> Yes, this offer is of course up to everyone interested.  But it's not
>>> purely an integration effort in the traditional sense, the grub
>>> filesystem interface is quite different from the Linux one, and the code
>>> structure and style is quite different.  But if you're willing to learn
>>> it should be very interesting.
>>>
>>
>> No one else seems to have volunteered, so I would certainly like to
>> give it a try.  I guess I need to get the ZFS grub code, create a ZFS
>> filesystem, and start looking around for information on linux
>> filesystem development and ZFS (obviously without looking at any CDDL
>> licensed code).
>>
>> Once I get a handle on that, I'll see where I can get before I need to
>> ask a thousand questions.
>>
> Code can be found here;
> * http://src.opensolaris.org/source/xref/onnv/onnv-gate/usr/src/grub/grub-0.95/stage2/
>
> But it may be covered by patents by Sun. So maybe not allowed make an
> implementation. :(
> Maybe you should consult SFLC (Software Freedom Law Center) first or something.
>

I would have no idea of the legal implications here.  Do I really need
to get the lawyers involved just to use GPLv2 code from another
project in linux?

-- 
Kevin Winchester
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