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.