From mboxrd@z Thu Jan 1 00:00:00 1970 From: Neil Brown Subject: Re: Raid 1 array degrades on reboot Date: Fri, 18 Jun 2010 07:34:40 +1000 Message-ID: <20100618073440.373d8aa6@notabene.brown> References: <4C19F5AF.5060300@team17.com> Mime-Version: 1.0 Content-Type: text/plain; charset=US-ASCII Content-Transfer-Encoding: 7bit Return-path: In-Reply-To: <4C19F5AF.5060300@team17.com> Sender: linux-raid-owner@vger.kernel.org To: David Watson Cc: linux-raid@vger.kernel.org List-Id: linux-raid.ids On Thu, 17 Jun 2010 11:15:11 +0100 David Watson wrote: > Hello, > > Recently I upgraded to 2Tb disks on one of my servers, I built a new > degraded raid1 array: > mdadm --create /dev/md7 -level 1 --raid-devices=2 missing /dev/sdd1 > > added its entry to /etc/mdadm/mdadm.conf then I rebooted to add the > second disk and added it to the array: > mdadm --manage /dev/md7 --add /dev/sdb1 > > I updated /etc/mdadm/mdadm.conf, although I noticed no difference in the > output of: > mdadm --detail --scan > > > I use a monolithic kernel so there is no ramdisk to regenerate. This is > my first 1.00 array, and the existing 0.9 arrays have never shown this > issue. I have attempted the same process on a test server with no > issues, and I can't really think of what to look at next. > > apologies for the long post. > Long posts are good.... However I cannot see in your long post what the actual problem is. You have given no evidence that anything degrades on boot. No kernel logs, no "/proc/mdstat immediately after boot"... More info please. NeilBrown