dm raid: add region_size parameter
authorJonathan Brassow <jbrassow@redhat.com>
Tue, 2 Aug 2011 11:32:07 +0000 (12:32 +0100)
committerAlasdair G Kergon <agk@redhat.com>
Tue, 2 Aug 2011 11:32:07 +0000 (12:32 +0100)
Allow the user to specify the region_size.

Ensures that the supplied value meets md's constraints, viz. the number of
regions does not exceed 2^21.

Signed-off-by: Jonathan Brassow <jbrassow@redhat.com>
Signed-off-by: Alasdair G Kergon <agk@redhat.com>

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