Re: max number of devices in raid6 array

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On Wed, 12 August, 2009 10:06 am, David Cure wrote:
> 	I want to create an raid6 array and I see an limit of number of
> devices : with 27 devices the array is created, and with 28 I've got
> this error :
> mdadm: invalid number of raid devices: 28
>
> 	I use kernel 2.6.30 (from backport) and mdadm - v2.6.7.2 - 14th
> November 2008 on Debian Lenny.
>
> 	Is there a way to pass out this limit ?

The limit is only with version 0.90 metadata, which is the default. I'd
recommend you do a bit of reading to pick metadata version 1.0, 1.1 or
1.2, according to any requirements you may have, then tell mdadm what your
choice is with --metadata= while creating your array.

Cheers,

John.

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