DevOps Toolbox - Mount New volume to EC2

This should be a piece of coke for a most sysadmin, but if you only do it once in a blue moon(or start aging like me), you would probably spend 30mins googling. So I decided to write it down.

 

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1.     Attach the new EBS volume to your instance from console

2.     Login into your instance on the command line and do and run (# represents the command prompt):
# ls /dev
You should see that /dev/sdf has been created for you

3.     Format /dev/sdf by running:
# mkfs.ext3 or mkfs.ext4 /dev/sdf
It will warn you that this an entire device. You should type y to allow the process to continue unless you want to create specific partitions on this device

4.     Create a directory to mount your new drive as on the filesystem, for example we’ll use /var:
# mkdir /var (first mv var to var.bk)

5.     Add a reference in the fstab file to mount the newly formatted drive onto the /files directory by running the following command:
#  echo “/dev/sdb /files ext4 noatime 0 0″ >> /etc/fstab

6.     Mount the drive by running:
# mount /var

7.     Check your drive has mounted correctly with the expected amount of file space by running:
# df -h /var

It really is that simple, within a few cli commands you can simply add 1GB to 1TB of storage at the drop of a hat!

Source: http://www.digitaltactics.co.uk/linux/how-to-mount-an-amazon-ebs-disk-as-a-drive-in-linux-centos/