From mboxrd@z Thu Jan 1 00:00:00 1970 From: NeilBrown Subject: Re: disk order problem in a raid 10 array Date: Sat, 19 Mar 2011 09:14:05 +1100 Message-ID: <20110319091405.2dfcad86@notabene.brown> References: <201103181549.20835.xavier@alternatif.org> Mime-Version: 1.0 Content-Type: text/plain; charset=US-ASCII Content-Transfer-Encoding: 7bit Return-path: In-Reply-To: <201103181549.20835.xavier@alternatif.org> Sender: linux-raid-owner@vger.kernel.org To: Xavier Brochard Cc: linux-raid@vger.kernel.org List-Id: linux-raid.ids On Fri, 18 Mar 2011 15:49:20 +0100 Xavier Brochard wrote: > Hello > > trying to solve my problem with a unusable raid10 array, I discovered that > disk order is mixed between each boot - even with live-cd. > Here's an extract from dmesg: > [ 12.5] sda: > [ 12.5] sdc: > [ 12.5] sdd: > [ 12.5] sde: sdd1 > [ 12.5] sdf: sdc1 > [ 12.5] sda1 sda2 > [ 12.5] sdg: sde1 > [ 12.5] sdf1 > > is that normal? > could this be a sign of hardware controler problem? > could this happen because all disks are sata-3 except 1 SSD which is sata-2? You are saying that something changes between each boot, but only giving one example so that we cannot see the change. That is not particularly helpful. The output above is a bit odd, but I think it is simply that the devices are all being examined in parallel so the per-device messages are being mingled together. Certainly 'sdd1' is on 'sdd', not no 'sde' as the message seems to show. NeilBrown