From mboxrd@z Thu Jan 1 00:00:00 1970 From: jahammonds prost Subject: trouble creating array Date: Sun, 25 Feb 2007 14:33:17 -0800 (PST) Message-ID: <727816.19226.qm@web55809.mail.re3.yahoo.com> Mime-Version: 1.0 Content-Type: text/plain; charset=US-ASCII Content-Transfer-Encoding: 7BIT Return-path: Sender: linux-raid-owner@vger.kernel.org To: linux-raid@vger.kernel.org List-Id: linux-raid.ids Just built a new FC6 machine, with 5x 320Gb drives and 1x 300Gb drive. Made a 300Gb partition on all the drives /dev/hd{c,d,e} and /dev/sd{a,b,c}... Trying to create an array gave me an error, since it thought there was already an array on some of the disks (and there was an old one). I decided to clear off the superblock on the drives with mdadm --zero-superblock on all the drives. It worked fine on all drives, except for /dev/sd{b,c)1, which returns an error "mdadm: Couldn't open /dev/sdb1 for write - not zeroing". There doesn't seem to be a problem with the drive, as I've run a non destructive badblocks on it, and also done a dd if=/dev/zero of=/dev/sdb1 on it, and Ive written out 300Gb onto the partition. When I try and create an array using these 2 partitions, I get an error mdadm: Cannot open /dev/sdb1: Device or resource busy mdadm: Cannot open /dev/sdc1: Device or resource busy and it aborts. I've double checked that the drives aren't mounted anywhere. There's nothing in /var/log/messages either... Any suggestions where to check next? Graham ___________________________________________________________ To help you stay safe and secure online, we've developed the all new Yahoo! Security Centre. http://uk.security.yahoo.com