From: Neil Brown <neilb@suse.de>
To: Marek <mlf.conv@gmail.com>
Cc: "linux-raid@vger.kernel.org" <linux-raid@vger.kernel.org>
Subject: Re: Linux/MacOSX RAID5 dual boot
Date: Fri, 9 Jul 2010 21:29:25 +1000 [thread overview]
Message-ID: <20100709212925.3a3bc0a4@notabene.brown> (raw)
In-Reply-To: <4182A55F-B80C-492F-956C-FD41417F757B@gmail.com>
On Fri, 9 Jul 2010 13:15:00 +0200
Marek <mlf.conv@gmail.com> wrote:
> Hi Neil,
>
> thanks for your answer. Do I understand it correctly that porting the
> md driver wouldn't be an option either?
No, not really an option.
Darwin is sufficiently different from Linux that it would really mean writing
a RAID5 driver for Darwin using md as a guide. You could probably borrow
some code (if the license allowed it which I doubt) but a very large amount
would need to be written from scratch.
NeilBrown
>
> Marek
>
> On 9.7.2010, at 12:22, Neil Brown <neilb@suse.de> wrote:
>
> > On Fri, 9 Jul 2010 12:07:56 +0200
> > Marek <mlf.conv@gmail.com> wrote:
> >
> >> Hi,
> >>
> >> it seems that my email has hit top 5 ranking on google when searching
> >> for "mdadm macosx", but it seems that due to some heavy discussion on
> >> this mailing list it probably went unnoticed.
> >> I would like to ask if someone would be able to elaborate whether
> >> there is a possibility that mdadm would run on Darwin and if so,
> >> whether a port would require a substantial rewrite.
> >
> > mdadm would not run on Darwin. It only works with the 'md' driver
> > which is
> > only in Linux.
> >
> > If you want both Linux and Darwin to be able to access the same
> > software RAID
> > array, you would need to find a format that both understand.
> > Probably the easiest way would be do discover how MAC OSX formats
> > RAID array
> > and write support for that in mdadm. Far from trivial, but probably
> > possible.
> >
> > A quick google suggest that RAID5 is not supported in OSX, so that
> > would not
> > be an option.
> >
> > NeilBrown
next prev parent reply other threads:[~2010-07-09 11:29 UTC|newest]
Thread overview: 6+ messages / expand[flat|nested] mbox.gz Atom feed top
2010-07-09 10:07 Linux/MacOSX RAID5 dual boot Marek
2010-07-09 10:22 ` Neil Brown
2010-07-09 11:15 ` Marek
2010-07-09 11:29 ` Neil Brown [this message]
-- strict thread matches above, loose matches on Subject: below --
2010-07-09 11:57 Marek
2010-07-08 1:18 Marek
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