1.查看分区fdisk -l

2.给/dev/xvdb1分区，命令：fdisk /dev/xvdb1

3.格式化分区，命令：mke2fs -t ext4 /dev/xvdb1

4.自动开机挂载

vi /etc/fstab

# /etc/fstab
# Created by anaconda on Tue May  3 13:48:10 2016
#
# Accessible filesystems, by reference, are maintained under '/dev/disk'
# See man pages fstab(5), findfs(8), mount(8) and/or blkid(8) for more info
#
UUID=80b9b662-0a1d-4e84-b07b-c1bf19e72d97 /                       ext4    defaults        1 1
/dev/xvdb1  /data                       ext4    defaults        1 1