Overview

You can expand a cloud disk to increase its storage space. This document describes how to expand a cloud disk via the console, and assign its expanded capacity to an existing file system.

Note：

For more information on expanding cloud disks, see Expanding Cloud Disk Capacity.

Notes

To protect important data, you can create a snapshot to back up your cloud disk data before expanding it.

Prerequisites

You have initialized the cbs-test cloud disk.

Directions

Expanding cloud disks (Windows)

Expanding cloud disks via the console

1. Log in to the CVM console and click Cloud Block Storage on the left sidebar.

2. Locate the cloud disk to expand, and click More > Expand under the Operation column on the right.

3. In the Expand Disk Capacity pop-up window, select a new capacity and click Next.

4. Click Adjust Now.

Rescanning the disk

Note：

This document uses a CVM with Windows Server 2012 R2 DataCenter 64-bit Chinese installed as an example. Note that the steps may vary according to the operating system version.

1. Log in to the CVM as the admin. See Logging in to Windows Instance Using RDP.
2. On the desktop, right click in the lower-left corner, and select Computer Management.
3. Right click Disk Management, and select Rescan Disk.
4. After scanning, check whether the size of data disk has been expanded.

Extending file systems of an existing partition

Note：

In this example, we will assign the expanded capacity to the existing E drive. For more information, see Extending Partitions and File Systems (Windows).

1. Right click anywhere on the blank space of the disk, and select Extend Volume.
2. Follow the Extend Volume Wizard to extend the volume.
   The new data disk capacity will be added to the original volume.

Expanding cloud disks (Linux)

Expanding cloud disks via the console

1. Log in to the CVM console and click Cloud Block Storage on the left sidebar.
2. Locate the cloud disk to expand, and click More > Expand under the Operation column on the right.
3. In the Expand Disk Capacity pop-up window, select a new capacity and click Next.
4. Click Adjust Now.

Extending a file system

Note：

• This document uses a CVM with CentOS 7.8 installed as an example. Note that the steps may vary according to the operating system version.
• In this example, we will assign the expanded capacity to /dev/vdb. For more information, see Online Extending Partitions and File Systems.

1. Run the following command to extend the EXT file system.

   resize2fs /dev/vdb
   ​

   The following information will appear:

2. Run the following command to view the result.

df -TH

If information similar to what is shown below is returned, the file system has been extended.

Documentation

• Cloud Disk Expansion Scenarios
• Snapshot Overview