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* Re: Linux/MacOSX RAID5 dual boot
@ 2010-07-09 10:07 Marek
  2010-07-09 10:22 ` Neil Brown
  0 siblings, 1 reply; 6+ messages in thread
From: Marek @ 2010-07-09 10:07 UTC (permalink / raw)
  To: Marek; +Cc: linux-raid@vger.kernel.org

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.

thanks,

Marek

On 8.7.2010, at 3:18, Marek <mlf.conv@gmail.com> wrote:

> Hi,
>
> I apologize if this has been asked before. I would like to run a  
> dual boot MacOSX/Linux system. I suppose that if I setup a 4-disk  
> RAID5 system via mdadm, MacOSX won't be able to access it. Can mdadm  
> be run succesfully on a MacOSX and if not, has a port been considered?
>
> thanks,
>
> Marek


^ permalink raw reply	[flat|nested] 6+ messages in thread
* Re: Linux/MacOSX RAID5 dual boot
@ 2010-07-09 11:57 Marek
  0 siblings, 0 replies; 6+ messages in thread
From: Marek @ 2010-07-09 11:57 UTC (permalink / raw)
  To: Neil Brown; +Cc: linux-raid@vger.kernel.org

On 9.7.2010, at 13:29, Neil Brown <neilb@suse.de> wrote:

> 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.

thanks for the information. It seems that a software RAID solution 
(other than RAID1 or RAID0) for OSX doesn't exist. I was only able to  
find SoftRAID which has some interesting features that are probably  
outside the scope of mdadm, but they don't even support RAID5 yet.

Marek
>
>
>>
>> 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
>


^ permalink raw reply	[flat|nested] 6+ messages in thread
* Linux/MacOSX RAID5 dual boot
@ 2010-07-08  1:18 Marek
  0 siblings, 0 replies; 6+ messages in thread
From: Marek @ 2010-07-08  1:18 UTC (permalink / raw)
  To: linux-raid@vger.kernel.org

Hi,

I apologize if this has been asked before. I would like to run a dual  
boot MacOSX/Linux system. I suppose that if I setup a 4-disk RAID5  
system via mdadm, MacOSX won't be able to access it. Can mdadm be run  
succesfully on a MacOSX and if not, has a port been considered?

thanks,

Marek 

^ permalink raw reply	[flat|nested] 6+ messages in thread
end of thread, other threads:[~2010-07-09 11:57 UTC | newest]

Thread overview: 6+ messages (download: mbox.gz follow: Atom feed
-- links below jump to the message on this page --
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
  -- 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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