Increase the Size of an AWS EBS Cloud Volume Attached to a Linux Machine

1. Stop the instance
2. Make a snapshot of the volume that we want to increase
3. Write down the attachment information
   

   Attachment information: i-f0cacda3 (PROD):/dev/sdf1 (attached)
   

4. Detach the volume
5. Create a new volume with larger size, pick the same zone, pick the snapshot that we create in Step #2
6. Attach the new volume to the instance with the same attachment information (see Step #3)
7. Start the instance
8. ssh into the instance as usual
9. df -h should still show the old size even we are using a larger volume
10. Run resize2fs /dev/sdf1 to increase the size to match the larger volume
11. Reboot (optional)