Increase Disk Space on Proxmox VM

Overview

To increase disk space on a Proxmox VM, two steps are required: growing the partition and resizing the filesystem[1].

Commands

  1. Grow the partition:
growpart /dev/sdX Y

Where:

  • sdX is the disk device (e.g., sda, sdb)
  • Y is the partition number
  1. Resize the filesystem:
resize2fs /dev/sdXY

Where:

  • sdXY is the specific partition (e.g., sda1, sdb2)

Prerequisites

The growpart command requires the cloud-utils package to be installed[1:1].

Important Notes

  1. The VM must be running for these commands to work
  2. Always backup important data before resizing partitions
  3. This process works for ext4 filesystems; other filesystems may require different tools

  1. Ask Ubuntu - Resize Partition

Member discussion