For the public record ... On Thu, Apr 5, 2012 at 1:46 PM, Brett Pemberton <brett.pemberton@gmail.com>wrote:
sfdisk -d /dev/sdg | sfdisk /dev/sdh mdadm --create /dev/md1 --level=1 --raid-devices=2 /dev/sdh1 missing pvcreate /dev/md1 vgextend system /dev/md1 pvmove -v /dev/sdg1
Missed a step here, vgreduce -v /dev/sdg1
pvremove /dev/sdg1 mdadm --manage /dev/md1 --add /dev/sdg1
mount /, chroot into it, run grub-install
For some stupid reason I had done the above from a debian i686 rescue flash drive. So naturally when I went to chroot, I couldn't, since this is an amd64 system. So instead I hand edited my grub.cfg and inserted 'insmod raid' lines above all 'insmod lvm' lines for kernel images. Worked absolutely fine, all back up and running. And thanks for all the suggestions. / Brett