From mboxrd@z Thu Jan 1 00:00:00 1970 From: keld@keldix.com Subject: Re: RAID 10 far and offset on-disk layouts Date: Tue, 14 Jan 2014 11:06:37 +0100 Message-ID: <20140114100637.GA5043@www5.open-std.org> References: <52BD8EDD.10809@assyoma.it> <20131227151927.GA4003@www5.open-std.org> <52BD9B4F.3000509@assyoma.it> <20131227154952.GA6539@www5.open-std.org> <52CE57D9.1030501@assyoma.it> <20140113102021.1ef3e203@notabene.brown> <52D3A962.4000308@assyoma.it> <20140113204534.737a98f6@notabene.brown> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Return-path: Content-Disposition: inline In-Reply-To: <20140113204534.737a98f6@notabene.brown> Sender: linux-raid-owner@vger.kernel.org To: NeilBrown Cc: Gionatan Danti , linux-raid@vger.kernel.org List-Id: linux-raid.ids On Mon, Jan 13, 2014 at 08:45:34PM +1100, NeilBrown wrote: > On Mon, 13 Jan 2014 09:52:50 +0100 Gionatan Danti wrote: > > I think I know what you are talking about now. The md driver in the kernel > supports two sorts of 'far' or 'offset' layouts for arrays where the number > of devices is not an integer multiple of the number of copies. > This has been supported in Linux since v3.9. but is not yet supported by > mdadm. Hmm, we discussed also the new layouts for when the number of drives are a whole multiple of the number of copies. That layout should follow the same principles. How do I generate the new format on kernel 3.9? best regards keld