ubuntu@ip-172-30-0-150:~$ df -h
Filesystem      Size  Used Avail Use% Mounted on
/dev/xvda1       20G  3.7G   15G  20% /
none            4.0K     0  4.0K   0% /sys/fs/cgroup
udev            996M   12K  996M   1% /dev
tmpfs           201M  344K  200M   1% /run
none            5.0M     0  5.0M   0% /run/lock
none           1001M     0 1001M   0% /run/shm
none            100M     0  100M   0% /run/user
/dev/xvdb        59G  361M   56G   1% /ebs

Disk /dev/xvda: 21.5 GB, 21474836480 bytes
255 heads, 63 sectors/track, 2610 cylinders, total 41943040 sectors
Units = sectors of 1 * 512 = 512 bytes
Sector size (logical/physical): 512 bytes / 512 bytes
I/O size (minimum/optimal): 512 bytes / 512 bytes
Disk identifier: 0x00000000

    Device Boot      Start         End      Blocks   Id  System
/dev/xvda1   *       16065    41929649    20956792+  83  Linux

Disk /dev/xvdb: 64.4 GB, 64424509440 bytes
255 heads, 63 sectors/track, 7832 cylinders, total 125829120 sectors
Units = sectors of 1 * 512 = 512 bytes
Sector size (logical/physical): 512 bytes / 512 bytes
I/O size (minimum/optimal): 512 bytes / 512 bytes
Disk identifier: 0x00000000

Disk /dev/xvdb doesn't contain a valid partition table