Partitions on Amazon EC2 instance

Question

I have a m3.medium instance, with a volume of 20GiB, type standard.

When I run sudo fdisk -l , it shows:

Disk /dev/xvda1: 21.5 GB, 21474836480 bytes

But when I run df -h , it shows:

Filesystem            Size  Used Avail Use% Mounted on
/dev/xvda1            7.9G  7.7G  172M  98% /
tmpfs                 1.9G     0  1.9G   0% /dev/shm

I'm confused. Where are the remaining 10GiB?

Answer 1

刚刚做了sudo resize2fs /dev/xvda1 ，现在我的分区有20GiB