mdadm -C /dev/md0 -l5 -n3 /dev/sd[bcd]
mdadm -D /dev/md0
pvcreate /dev/md0
vgcreate nz2001_vg /dev/md0
lvcreate -L 1G -n nz2001_lv nz2001_vg
mkfs.ext4 /dev/nz2001_vg/nz2001_lv
mkdir /mnt/lvm
mount /dev/nz2001_vg/nz2001_lv /mnt/lvm
df -Th
pvscan
lvscan
vgscan
cat /proc/mdstat
mdadm --mange /dev/md0 -f /dev/sdb
mdadm --manage /dev/md0 -r /dev/sdb
mdadm --manage /dev/md0 -a /dev/sde
watch -n1 cat/proc/mdstat
umount /dev/nz2001_vg/nz2001_lv
lvremove /dev/nz2001_lv
vgremove nz2001_vg
pvremove /dev/md0
rm -fr /etc/madam.conf
madam -S /dev/md0
mdadm --zero-superblock /dev/sd[bcde]
passwd -d root