It's just beautiful what happens when you mix Linux md with lvm2. I just added two 15K 146G disks to my system. They show up as sdc and sdd. Now I do this:
That leaves nearly 50G of free space on the physical volume into which I can grow either filesystem eventually, or add a third, depending on future needs.for x in sdc sdd; do parted /dev/$x mklabel msdos mkpart primary 0 100% set 1 raid on print quit done cd /dev; MAKEDEV md mdadm --create /dev/md0 --level=1 --raid-devices=2 /dev/sdc1 /dev/sdd1 pvcreate /dev/md0 vgcreate raid1 /dev/md0 for x in agriffis amg; do lvcreate -L 50G -n $x raid1 mkfs.ext3 -L $x -O dir_index /dev/raid1/$x echo "LABEL=$x /home/$x ext3 noatime 1 2" >>/etc/fstab done mount -a