Okay, I've spent a little more time on this, and I think there is a lot more involved from a configuration perspective to manually take a non- RAID system to a root-on-RAID1 system.
Here are the steps I was able to use in a Jaunty KVM to get this to work. Install Jaunty into a KVM, and boot it with a single disk: HOST# qemu-img create -f qcow2 disk1.img 4G HOST# kvm -hda disk1.img -cdrom jaunty-server-amd64.iso Ensure that system is happy, hunkey, and dorey. Create a new disk. HOST# qemu-img create -f qcow2 disk2.img 4G Launch the guest with both disks now: HOST# kvm -hda disk1.img -hdb disk2.img The rest of these commands are to be run in the guest.... Partition: # fdisk /dev/sdb n p (enter) (enter) t fd w Create /dev/md0: # mdadm --create /dev/md0 --level=raid1 --raid-devices=2 missing /dev/sdb1 Append your raid configuration file: # mdadm --detail --scan >> /etc/mdadm/mdadm.conf Configure your raid. Note that this will update your initramfs with the new mdadm.conf file!!! # dpkg-reconfigure mdadm Fix /etc/fstab, which is configured for /dev/sda1 to provide /. Update this to /dev/md0 (or the UUID of /dev/md0). # vi /etc/fstab ... Add the new disk to your bootloader device map: # echo "(hd1) /dev/sdb" >> /boot/grub/device.map Format the filesystem: # mkfs.ext3 /dev/md0 Mount it: # mount /dev/md0 /mnt Copy the data over from the first dist to the second. Make sure you exclude the dynamically created kernel filesystems. # rsync -aP --exclude /dev/ --exclude /mnt/ --exclude --/proc/ --exclude /sys / /mnt # mkdir /mnt/dev /mnt/mnt /mnt/proc /mnt/sys Install the bootloader on the raid device. # grub-install /dev/md0 Reboot. Hit (esc) to enter the grub menu. Hit (e) to edit your kernel line. Replace root=(*) with root=/dev/md0. :-Dustin -- boot from manually constructed raid1 root fails because of missing hostname in initramfs https://bugs.launchpad.net/bugs/226484 You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. -- ubuntu-bugs mailing list [email protected] https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
