How to Resize EC2 EBS Volume Without Any Downtime (Disk Space)

Updated on Sept. 18, 2024, 2:53 p.m., by: sagar

Looking for the tutorial about how to increase disk space on AWS EC2? Don’t worry, you’ve come to the perfect place. In this tutorial, you will learn how to resize the disk size of the EC2 instance without detaching the volume or restarting the server. (Easily)
AWS provides a block storage solution, EBS, for the instance. EBS’ Elastic Volumes feature allows you to increase volume size while the volume is still in use, making the resizing process much easier and faster without any downtime of the server.

Before extending the size of your EBS volume, It’s good to take a backup of your data with EBS Snapshot. It’s the best practice as if anything goes wrong, you can always restore the data.

## Create Snapshot

To take a snapshot of your volume,

- Go to EBS volume attached to your instance from EC2 Dashboard.
- Click on **Actions** and **Create Snapshot.**
- Add the **description** value as you wish.
- You can add tags also.
- Click on **Create Snapshot**. It may take some time.

## Resize The EBS Volumes of EC2 Instance:

After creating a snapshot of your volume, now it’s time to increase your disk space.

Steps:

- First Go to **Services** > **EC2** > **Instances.**
- Go to the EBS volume attached to your instance.
- From **Actions** click on **Modify Volume.**
- Add your desired size, I will be replacing **8** with **30**.
- You’ll get a confirmation pop-up. Click on **Modify**.

### Resizing the EBS:

You have successfully added a new volume size to your instance, but you aren’t using the new volume size. For this, SSH to your server or instance and run: ***df -h***

Here, you can see our disk partition is still using 8GB. Check the partition size by running commands ***lsblk*** and ***blkid.***

Here, `xvda1` is your current volume with **8GB** and `xvda` with **30GB.**

Now extend the partition:

```bash
$ sudo growpart /dev/xvda 1
```

And, extend the volume:

```bash
$ sudo xfs_growfs /dev/xvda1
```

Type `df -h` to check the volume size, it must show 30GB.

In our case, since the file system is `XFS`, we have to use **xfs_growfs** tool.

For file systems `ext4`, `ext2`, and `ext3` you have to use `sudo resize2fs /dev/xvda1`.

## Conclusion

In this way, the volume is now resized and ready to be used without any downtime.

How to Resize EC2 EBS Volume Without Any Downtime (Disk Space)

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