From mboxrd@z Thu Jan 1 00:00:00 1970 From: Ross Vandegrift Subject: Creating degraded more arrays with mdadm? Date: Sat, 14 Dec 2002 17:27:19 -0500 Sender: linux-raid-owner@vger.kernel.org Message-ID: <20021214222719.GA22527@willow.seitz.com> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Return-path: Content-Disposition: inline To: linux-raid@vger.kernel.org List-Id: linux-raid.ids Hey everyone, I started building a new array today to give some failover capabilities to an aging Maxtor 17G drive and an IBM Deathstar 20G. The Maxtor had data on it, so I went about my usual routine of creating an array in with a failed disk. I'm trying to convert to using mdadm for everything, but I couldn't really figure out how to do this. I thought I figured it out with # mdadm --create /dev/md0 --level=1 --raid-disks=1 /dev/hde2 ... copy data # mdadm --add /dev/md0 /dev/hdg2 But I knew something didn't work as expected when there was no sync required. I realized only after stopping and restating the array I created a one disk mirror with one hot spare. Doh! Given that I have /dev/hde2 with data, and /dev/hdg1 and I want to put them into an array, how do I use mdadm to make a degraded mode md device like I used to with raidtools2? (btw - have I asked this before? I'm having a small case of deja vu, but google and MARC couldn't corroborate my feeling...) -- Ross Vandegrift ross@willow.seitz.com A Pope has a Water Cannon. It is a Water Cannon. He fires Holy-Water from it. It is a Holy-Water Cannon. He Blesses it. It is a Holy Holy-Water Cannon. He Blesses the Hell out of it. It is a Wholly Holy Holy-Water Cannon. He has it pierced. It is a Holey Wholly Holy Holy-Water Cannon. He makes it official. It is a Canon Holey Wholly Holy Holy-Water Cannon. Batman and Robin arrive. He shoots them.