How to Extend (Increase) VPS Disk Size on Linux

What this is

This guide explains the typical steps to expand a Linux VPS disk after your provider increases the disk size.

What it is for

• Fix “disk full” situations
• Add storage for websites, databases, or backups

Prerequisites (important)

• Your VPS provider has already increased the disk size (control panel action)
• Snapshot/backup recommended (disk operations are risky)
• SSH access + sudo

Step-by-step (generic, common case)

Step 1) Check current disk and partitions

lsblk
sudo fdisk -l

What it does: Shows disks, partitions, sizes.

Step 2) Confirm the OS sees the new disk size

lsblk

Expected result: The main disk (example: /dev/sda or /dev/vda) shows the new larger size.

Step 3) Extend the partition (cloud-utils growpart)

Install growpart:

Ubuntu/Debian:

sudo apt update
sudo apt install -y cloud-guest-utils

RHEL-based:

sudo dnf install -y cloud-utils-growpart

Extend partition example (disk /dev/sda, partition 1):

sudo growpart /dev/sda 1

Expected output: It reports the partition was grown.

Step 4) Resize the filesystem

First, identify filesystem type:

df -T /

If ext4

sudo resize2fs /dev/sda1

If xfs

sudo xfs_growfs /

Step 5) Verify new free space

df -h

Expected result: The / filesystem shows more available space.

Warnings & notes

• Disk/partition names can differ (/dev/vda, /dev/nvme0n1).
• If you use LVM, steps are different (needs PV/LV resize). Do not guess.

Final verification

lsblk
df -h

Conclusion

You expanded your VPS disk safely in the common scenario. If your layout uses LVM or multiple disks, follow an LVM-specific guide.