Easily Extend LVM and Volumes on AWS EC2#

Managing storage on AWS EC2 can be a daunting task if you’re new to Linux volume management. But with LVM (Logical Volume Manager), resizing your storage dynamically becomes easy and efficient. In this guide, we’ll walk through the process of extending an EBS volume and resizing an LVM partition without downtime.

Step 1: Extend the EBS Volume#

1. Go to your AWS Console → EC2 → Volumes.

2. Select the volume attached to your EC2 instance.

3. Click Modify Volume, enter the new size, and confirm.

4. Wait for the resize to complete (you can check with lsblk).

Step 2: Resize the Partition#

If you’re using LVM, follow these steps:

1. Check the current disk and volume groups:

   lsblk
   df -h
   vgs
   lvs

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2. Identify the new disk space and inform the kernel:

   sudo growpart /dev/xvdf 1  # Replace xvdf with your actual device

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3. Extend the Physical Volume (PV):

   sudo pvresize /dev/xvdf1  # Use correct partition name

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4. Extend the Logical Volume (LV):

   sudo lvextend -l +100%FREE /dev/mapper/ubuntu--vg-ubuntu--lv  # Adjust path accordingly

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5. Resize the Filesystem:

   • If using ext4:

     sudo resize2fs /dev/mapper/ubuntu--vg-ubuntu--lv

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   • If using XFS:

     sudo xfs_growfs /

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Step 3: Verify Changes#

Run:

lsblk
df -h

You should now see the increased disk size available for use!

Conclusion#

With LVM, extending storage on an AWS EC2 instance is seamless. No need to restart the instance, making it a great approach for production systems. Hope this guide helps---happy scaling! 🚀

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