From mboxrd@z Thu Jan 1 00:00:00 1970 From: Neil Brown Subject: Re: RAID MIA. Again. (Kinda.) Date: Sat, 6 Mar 2010 07:38:30 +1100 Message-ID: <20100306073830.40f10294@notabene.brown> References: <20100305075016.51e98363@notabene.brown> <20100305123028.55a34c14@notabene.brown> <4877c76c1003051205i23998a72xc9df3174c1e7fd17@mail.gmail.com> Mime-Version: 1.0 Content-Type: text/plain; charset=US-ASCII Content-Transfer-Encoding: 7bit Return-path: In-Reply-To: <4877c76c1003051205i23998a72xc9df3174c1e7fd17@mail.gmail.com> Sender: linux-raid-owner@vger.kernel.org To: Michael Evans Cc: Ken D'Ambrosio , linux-raid@vger.kernel.org List-Id: linux-raid.ids On Fri, 5 Mar 2010 12:05:32 -0800 Michael Evans wrote: > Here's a stab at it. I've never tried to do it like this and haven't > glanced at the code so I can't be sure, but this seems to be the most > likely suspect: > > #ARRAY /dev/md0 level=raid5 num-devices=4 devices=sda2,sdb2,sdd2,sdc2 > > Your commented out version seems to specify this mapping > 0,sda2 > 1,sdb2 > 2,sdd2 > 3,sdc2 > No it doesn't. The 'devices=' lists is an unordered list (as set?). It just says "only try to include these devices in the array". They still have to have valid metadata, and it is the content of the metadata the defines the role of the device in the array. NeilBrown