FreeBSD system disk expansion method - - Alibaba Cloud Documentation Center

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Introduction

This article describes how to expand the FreeBSD system disk.

Background

Alibaba Cloud reminds you that:

Before you perform operations that may cause risks, such as modifying instance configurations or data, we recommend that you check the disaster recovery and fault tolerance capabilities of the instances to ensure data security.

You can modify the configurations and data of instances including but not limited to Elastic Compute Service (ECS) and Relational Database Service (RDS) instances. Before the modification, we recommend that you create snapshots or enable RDS log backup.

If you have authorized or submitted sensitive information such as the logon account and password in the Alibaba Cloud Management Console, we recommend that you modify such information in a timely manner.

For more information about the system disk name and size, see the demo environment.

Log on to the system, and run the following command to view the disk space. You can see that the disk size is 50 GB, but the remaining disk space is only 512B.
```
gpart show
```
The following command output is returned.
Run the following command to restore the disk space from its idle status. Then, run the gpartshow command to view the idle disk space:
```
gpart recover ada0
```
The following command output is returned.
Run the following command to adjust the disk size:

Note: the Swap partition occupies a portion of the disk.
```
gpart resize -i 3 -a 4k -s 48G ada0
```
The following command output is returned.
Run the following command to resize the file system. If you agree to resize the file system from 19 GB to 48 GB, you are prompted to enter Yes.
```
growfs /dev/ada0p3
```
The following command output is returned.
Run the following command to confirm the successful scale-out:
```
df -h
```

Application scope

Elastic Compute Service