create raid5

# umout 所有数据disk
for i in {1..11};do umount /disk$i;done
# 修改/etc/fstab，注释掉 /dev/sd[b-l]
vim /etc/fstab
# 制作 raid5, 大约需要5个小时
mdadm --create --verbose /dev/md0 --level=5 --raid-devices=10 /dev/sd[b-k] --spare-devices=1 /dev/sdl
cat /proc/mdstat
# 格式化并挂载
mdadm --detail --scan > /etc/mdadm.conf
parted /dev/md0 mklabel gpt
parted /dev/md0 mkpart primary 0% 100%
yum install -y e2fsprogs -b current
mkfs.ext4 /dev/md0p1
mkdir /data/
vim /etc/fstab;添加行: /dev/md0p1      /data    ext4    defaults,noatime  0 0
mount -a