title: Add EBS to Ubuntu EC2 Instance
body: <p>I'm having problem connecting EBS volume to my Ubuntu EC2 Instance.</p>
  
  <p>Here's what I did:</p>
  
  <ol>
  <li><p>From the Amazon AWS Console, I created a EBS 150GB volume and attached it to an Ubuntu 11.10 EC2 instance. Under the EBS volume properties, "Attachment" shows: "[my Ubuntu instance id]:/dev/sdf (attached)"</p></li>
  <li><p>Tried mounting the drive on the Ubuntu box, and it told me "mount: /dev/sdf is not a block device"</p>
  
  <p><code>sudo mount /dev/sdf /vol</code></p></li>
  <li><p>So I checked with fdisk and tried to mount from the new location and it told me it wasn't the right file system.</p>
  
  <p><code>sudo fdisk -l</code></p>
  
  <p><code>sudo mount -v -t ext4 /dev/xvdf /vol</code></p>
  
  <p>the error:</p>
  
  <blockquote>
    <p>mount: wrong fs type, bad option, bad superblock on /dev/xvdf, missing
    codepage or helper program, or other error In some cases useful info
    is found in syslog - try dmesg | tail or so</p>
  </blockquote>
  
  <p>"dmesg | tail" told me it gave the following error:</p>
  
  <blockquote>
    <p>EXT4-fs (sda1): VFS: Can't find ext4 filesystem</p>
  </blockquote></li>
  </ol>
  
  <p>I also tried putting the configurations into /etc/fstab file as instructed on <a href="http://www.webmastersessions.com/how-to-attach-ebs-volume-to-amazon-ec2-instance">http://www.webmastersessions.com/how-to-attach-ebs-volume-to-amazon-ec2-instance</a>, but still gave same not the right file system error.</p>
  
  <p>Questions:</p>
  
  <p>Q1: Based on point 1 (above), why was the volume mapped to 'dev/sdf' when it's really mapped to '/dev/xvdf'?</p>
  
  <p>Q2: What else do I need to do to get the EBS volume loaded? I thought it'll just take care of everything for me when I attach it to a instance.</p>