First, use $sudo su to get the root rights. This help you to prevent any permission error.
If this is a brand new volume then you will want to format it, else skip below step.
$mkfs -t ext3 /dev/sdf
After that, adding the mount to /etc/fstab
$echo "/dev/sdf /ebs ext3 noatime 0 0" >> /etc/fstab
you should now see a new /ebs file system mounted on the EBS volume