On 9.7.2010, at 13:29, Neil Brown <neilb@xxxxxxx> wrote:
On Fri, 9 Jul 2010 13:15:00 +0200
Marek <mlf.conv@xxxxxxxxx> 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@xxxxxxx> wrote:
On Fri, 9 Jul 2010 12:07:56 +0200
Marek <mlf.conv@xxxxxxxxx> 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
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