AWS Tutorial: How to Attach and Mount an EBS volume to EC2 Linux Instance?

Step 1 – Create a Volume

Step 2 – Attach a Volume to EC2 Instance

Step 3 – Verify if Volume is attached or not

Verify if Volume is attached or not by running linux command in Ec2-instance

$ lsblk

Step 4 – Check if the volume has any data using the following command.

If the above command output shows “/dev/xvdf: data“, it means your volume is empty.

$ sudo file -s /dev/xvdf

Step 5: Format the volume to the ext4 filesystem using the following command.

Alternatively, you can also use the xfs format. You have to use either ext4 or xfs.

$ sudo mkfs -t ext4 /dev/xvdf
$ sudo mkfs -t xfs /dev/xvdf

Step 6: Create a directory of your choice to mount our new ext4 volume. I am using the name “newvolume“. You can name it something meaningful to you.

$ sudo mkdir /newvolume

Step 7: Mount the volume to “newvolume” directory using the following command.

$ sudo mount /dev/xvdf /newvolume/

Step 8: cd into newvolume directory and check the disk space to validate the volume mount.

$ cd /newvolume
$ df -h .

The above command should show the free space in the newvolume directory.
To unmount the volume, use the unmount command as shown below..
umount /dev/xvdf

Mount one EBS volume to Multiple EC2 Instances

If you have any use case to mount an EBS volume to multiple ec2 instances, you can do it via EBS multi-attach functionality.

This option only serves specific use-cases where multiple machines need to read/write to the same storage location concurrently.

EBS multi attach option is available only for Provisioned IOPS (PIOPS) EBS volume types.

Note: EBS multi-attach does not support XFS, EXT2, EXT4, and NTFS file systems. It supports only cluster-aware file systems.

Rajesh Kumar

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