Recover files from damaged ec2-instance

lsblk Determine if you need to create a file system on the volume. New volumes are raw block devices, and you need to create a file system on them before you can mount and use them. Volumes that have been restored from snapshots likely have a file system on them already; if you create a new file system on top of an existing file system, the operation overwrites your data. Use the sudo file -s device command to list special information, such as file system type.

sudo file -s /dev/xvdf

mount -t ext4 /dev/xvdf 1/   Ref: http://docs.aws.amazon.com/AWSEC2/latest/UserGuide/ebs-using-volumes.html