Long time ago, I was in a situation where I miscalculated the volume size of an AWS EC2 instance, so I had to increase the data disk size. I’m sure this could happen to everyone once in a while. Although updating the disk size is a one-minute task, additionally, you need to do some configuration on the Linux OS side as well. So, here are the steps.
Prerequisites
- Linux bash environment
Solution
Step 1. Verify the disk size has changed.
lsblk
Step 2. Extend the partition. For example, expand the size of the device called nvme0n1, partition number 1:
sudo growpart nvme0n1 1
Step 3. Now, verify the partition size using the same command from Step 1: lsblk.
Step 4. Extend the filesystem mounted in the root directory /.
- XFS file system:
sudo xfs_growfs -d /. - Ext4 file system:
sudo resize2fs /dev/nvme0n1p1.
Step 5. Verify file system extension:
df -h
Conclusion
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