From mboxrd@z Thu Jan 1 00:00:00 1970 From: Martin Wilck Subject: Re: How does md(adm) work with fake-raid ? Date: Fri, 19 Jul 2013 20:58:47 +0200 Message-ID: <51E98C67.9060605@arcor.de> References: <51E86646.8020107@arcor.de> Mime-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 7bit Return-path: In-Reply-To: Sender: linux-raid-owner@vger.kernel.org To: Dmitrijs Ledkovs , linux-raid@vger.kernel.org List-Id: linux-raid.ids On 07/19/2013 01:35 AM, Dmitrijs Ledkovs wrote: > My experience with these fakeraid arrays is very limitted, and I'd > want to enquire of proper migration strategies from dmraid to mdadm. > Whilst looking at the udev rules, at the moment, i have disable > IMSM/DDF from assembly in mdadm udev rules, because dmraid has a nice > property of "activating anything it finds". > I suppose having both mdadm & dmraid racing to activate those drives > wouldn't be nice. It can be done in udev. Have a look at the udev rules in CentOS6, for example; they do it for IMSM and it should be possible for DDF as well. You can use kernel command line parameters ("nodmraid") to define what RAID solution you prefer. Martin