---
title: "Increasing appliance disk size"
slug: "increasing-appliance-disk-size-v6-7"
description: "Learn how to increase your LVM volume size without rebooting, using commands and services for efficient disk management on platforms like AWS and VMWare."
updated: 2026-03-17T15:51:35Z
published: 2026-04-03T16:41:06Z
canonical: "support.appgate.com/increasing-appliance-disk-size-v6-7"
---

> ## Documentation Index
> Fetch the complete documentation index at: https://support.appgate.com/llms.txt
> Use this file to discover all available pages before exploring further.

# Increasing appliance disk size

It is possible to increase the size of the data LVM volume. There is a service that runs at boot, called `lvmresizer.service`, which scans the disks and partitions; it then automatically adds new empty disks and any un-partitioned space at the end of the used disks to the data volume.

When rebooting an appliance, this space gets added automatically to the data volume, however it can be done without rebooting by restarting the service:

`systemctl restart lvmresizer.service`

On some platforms, like VMWare ESXi, the kernel first needs to be explicitly notified of the changed disk size, like this:

`echo 1 > /sys/class/block/sda/device/rescan`

Replace sda with the device name.

## Advanced disk resizing

This can be done by extending the size of the current disk used by the czvg LVM group. You can see what partition is being used running this command:

`pvdisplay`

Example:

`  --- Physical volume ---  PV Name               /dev/nvme0n1p2  VG Name               czvg`

That means the the partition nvme0n1p2 is the one used by the czvg LVM group.

Once you have extended the disk size (modifying it in AWS or GCP console for instance) there are two ways to extend the size in the data LVM volume:

- reboot the appliance and once it's online again you will have the new space in the data LVM volume.
- run the command ``systemctl start lvmresizer``. Once it's completed you will have the new space in the data LVM volume.

Example: An appliance in AWS with initially 20G of disk where we increased the disk to 40G using the AWS console

`root@host:/home/cz# df -h|grep data/dev/czvg/data    9.5G   98M  8.9G   2% /mnt/data`

`root@host:/home/cz# vgdisplay |grep "VG Size"  VG Size               <19.75 GiB`

`root@host:/home/cz# fdisk -l /dev/nvme0n1|head -1Disk /dev/nvme0n1: 40 GiB, 42949672960 bytes, 83886080 sectors`

`root@host:/home/cz# systemctl start lvmresizer.service `

`root@host:/home/cz# vgdisplay |grep "VG Size"  VG Size               <39.75 GiB`

`root@host:/home/cz# df -h|grep data/dev/czvg/data     30G  103M   28G   1% /mnt/data`