http://docs.aws.amazon.com/zh_cn/AWSEC2/latest/UserGuide/ebs-expand-volume.html#recognize-expanded-volume-linux

1、AWS console  EC2 resizse

2、login EC2

2.1、 lsblk       get info to disk size.  Is resize ok?

2.2  resize2fs /dev/xvda1

If 2.2 finish, then resize faild.  follow 2.3

2.3  parted /dev/xvda

2.3.1  parted> print all     -> get disk real size
2.3.2  parted> resizepart
2.3.3  parted> 1
2.3.4 parted End?>put size is 2.3.1
2.3.5 parted>exit

then 2.2 again. If ok then 2.1 check age.

PS：
2.3.4  

End?> -1

-1 最大磁碟空間