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From: Trygve Laugstøl <trygvis@inamo.no>
To: pgsql-performance@postgresql.org
Subject: Re: Best OS for Postgres 8.2
Date: Tue, 08 May 2007 12:29:09 +0200
Message-ID: <464050F5.3070802@inamo.no> (raw)
In-Reply-To: <Pine.LNX.4.64.0705080312310.24680@asgard.lang.hm>
References: <1178574927.533849.90730@e51g2000hsg.googlegroups.com>
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	<Pine.LNX.4.64.0705080043120.24680@asgard.lang.hm>
	<b41c75520705080122q58b36e36x21f6147ae5adaa81@mail.gmail.com>
	<Pine.LNX.4.64.0705080140060.24680@asgard.lang.hm>
	<464039AD.40407@inamo.no>
	<Pine.LNX.4.64.0705080312310.24680@asgard.lang.hm>

david@lang.hm wrote:
> On Tue, 8 May 2007, Trygve Laugstøl wrote:
> 
>>>  currently ZFS is only available on Solaris, parts of it have been 
>>> released
>>>  under GPLv2, but it doesn't look like enough of it to be ported to 
>>> Linux
>>>  (enough was released for grub to be able to access it read-only, but 
>>> not
>>>  the full filesystem). there are also patent concerns that are 
>>> preventing
>>>  any porting to Linux.
>>
>> This is not entirely correct. ZFS is only under the CDDL license and 
>> it has been ported to FreeBSD.
>>
>> http://mail.opensolaris.org/pipermail/zfs-discuss/2007-April/026922.html
>>
> I wonder how they handled the license issues? I thought that if you 
> combined stuff that was BSD licensed with stuff with a more restrictive 
> license the result was under the more restrictive license. thanks for 
> the info.

The CDDL is not a restrictive license like GPL, it is based on the MIT 
license so it can be used with BSD stuff without problems. There are 
lots of discussion going on (read: flamewars) on the opensolaris lists 
about how it can/should it/will it be integrated into linux.

> here's a link about the GPLv2 stuff for zfs
> 
> http://blogs.sun.com/darren/entry/zfs_under_gplv2_already_exists

That title is fairly misleading as it's only some read-only bits to be 
able to boot off ZFS with grub.

--
Trygve



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