cfdisk /dev/sdc sdc1 1M 剩下全给sdc2
cfdisk /dev/sdd sdd 1M 剩下全给sd2
parted /dev/sdc set 1 bios_grub on && parted /dev/sdd set 1 bios_grub on
mdadm -Cv /dev/md0 -l 1 -n 2 /dev/sdd2 /dev/sdc2
mkfs.ext4 /dev/md0
mkdir /mnt/raid && mount /dev/md0 /mnt/raid
rsync -avx / /mnt/raid && rsync -avx /boot/ /mnt/raid/boot && rsync -avx /home/ /mnt/raid/home && rsync -avx /var /mnt/raid/var
mount --bind /dev /mnt/raid/dev
mount --bind /proc /mnt/raid/proc
mount --bind /sys /mnt/raid/sys
chroot /mnt/raid
修改/etc/fstab，/挂载为/dev/md127
sed -i "s/use_lvmetad\ =\ 1/use_lvmetad\ =\ 0/g" /etc/lvm/lvm.conf
update-grub
grub-install /dev/sdd && grub-install /dev/sdc