tencent cloud

Boost Engagement with Tencent RTC Free TrialFree video and chat features await!

Feedback

Cloud Block Storage

Determining the Expansion Method

Last updated: 2023-12-21 21:36:32

Overview

A cloud disk is an expandable storage device on cloud. After a cloud disk is created, you can expand its capacity at any time to increase its storage capacity without losing any data in it. After expanding cloud disk capacity on the console, you need to log in to the CVM instance to assign its expanded capacity to an existing partition using an appropriate method as needed. This document describes how to determine the expansion method on a Linux CVM.
Note:
Extending the file system may affect the existing data. We recommend you manually create a snapshot to back up your data before the operation.

Prerequisite

You have mounted the cloud disk to a Linux CVM and created a file system.
You have logged in to the Linux instance that requires extending partitions and file systems.

Directions

1. 
Run the following command as the root user to view the partition format of the cloud disk.

fdisk -l
If the result only shows /dev/vdb without a partition, you need to extend the file system.


If the result is as shown in the following two figures (which may vary according to the operating system), the GPT partition format should be used.




If the result is as shown in the following figure (which may vary according to the operating system), the MBR partition format should be used.


2. Choose the expansion method corresponding to the partition format obtained in step 1.
Note:
MBR partition supports disk with a maximum capacity of 2 TB.
When you partition a disk with a capacity greater than 2 TB, we recommend you create and mount a new data disk and use the GPT partition format to copy data.
Partition format
Expansion method
Remarks
N/A
Applicable to scenarios where a file system is created directly on a bare device and no partition is created.
GPT
Applicable to scenarios of direct formatting when no partition is created.
Applicable to scenarios where the original partitions remain unchanged and a new GPT partition is created for expansion.
MBR
Applicable to scenarios of direct formatting when no partition is created.
Applicable to scenarios where the original partitions remain unchanged and a new MBR partition is created for expansion.


Catalog

In The Article

Determining the Expansion Method

Contact Us

Contact our sales team or business advisors to help your business.

Technical Support

Open a ticket if you're looking for further assistance. Our Ticket is 7x24 avaliable.

7x24 Phone Support
Hong Kong, China
+852 800 906 020 (Toll Free)
United States
+1 844 606 0804 (Toll Free)
United Kingdom
+44 808 196 4551 (Toll Free)
Canada
+1 888 605 7930 (Toll Free)
Australia
+61 1300 986 386 (Toll Free)
EdgeOne hotline
+852 300 80699
More local hotlines coming soon