How to Extend Disk Partition

Prerequisites

Before extending a partition, make sure you have:

• SSH access to your VPS
• Root or sudo privileges
• Additional disk space allocated (via Hostxpeed upgrade)
• Backup of important data

Step 1: Check Current Disk Size

Connect to your VPS:

ssh hxroot@YOUR_SERVER_IP -p 22

df -h

lsblk

Step 2: Verify Additional Space is Available

sudo fdisk -l

Look for the root disk (usually /dev/vda or /dev/sda).

Step 3: Resize Partition (ext4 filesystem)

For VirtIO disks (/dev/vda):

First, tell the kernel to rescan the disk:

echo 1 > /sys/block/vda/device/rescan

Resize the partition using growpart (install if needed):

apt install cloud-guest-utils -y
sudo growpart /dev/vda 1

Then resize the filesystem:

sudo resize2fs /dev/vda1

Step 4: For SCSI/SATA disks (/dev/sda)

sudo growpart /dev/sda 1
sudo resize2fs /dev/sda1

Step 5: For XFS filesystem (CentOS/RHEL)

sudo xfs_growfs /

Step 6: Verify Success

df -h

The root partition should now show increased size.

Alternative: Using fdisk (Manual Method)

If growpart is unavailable:

sudo fdisk /dev/vda

Inside fdisk:

1. Print partitions: p
2. Delete partition 1: d, then 1
3. Create new partition: n, p, 1, accept defaults
4. Write changes: w

Then reboot and resize filesystem:

sudo reboot
sudo resize2fs /dev/vda1

For LVM-based Systems

Extend physical volume:

sudo pvresize /dev/vda1
sudo lvextend -l +100%FREE /dev/mapper/ubuntu--vg-ubuntu--lv
sudo resize2fs /dev/mapper/ubuntu--vg-ubuntu--lv

Check Filesystem Before Resizing

sudo e2fsck -f /dev/vda1