From mboxrd@z Thu Jan 1 00:00:00 1970 From: Andy Bailey Subject: Re: sdb failure - mdadm: no devices found for /dev/md0 Date: Wed, 29 Jul 2009 22:21:32 -0500 Message-ID: <1248924092.13147.241.camel@localhost.localdomain> References: <1248711579.13147.75.camel@localhost.localdomain> <1248786336.13147.172.camel@localhost.localdomain> Mime-Version: 1.0 Content-Type: text/plain Content-Transfer-Encoding: 7bit Return-path: In-Reply-To: <1248786336.13147.172.camel@localhost.localdomain> Sender: linux-raid-owner@vger.kernel.org To: linux-raid@vger.kernel.org List-Id: linux-raid.ids Please, can anyone help out with this problem. Can anyone think of a possible reason why the UUID changed? No command was run that I can imagine would change the UUID. The only thing that I could see that possibly could change the UUID is adding a partition that had previously been part of another partition, without zeroing the superblock first. Also can anyone see why the system wouldnt boot without the original /dev/sdb? The /dev/sdb that replaced it had no partitions created on it, it was brand new. Could that cause a problem? And then why it then wouldnt boot with the original /dev/sdb? Any guess, hypothesis will do, I need some ideas to investigate and find out what happened and I have drawn a blank. Or am I asking in the wrong mailing list, if so can somebody tell me the correct mailing list to use. Thanks Andy Bailey