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.
Extending the file system may affect the existing data. We strongly recommend you to manually create a snapshot to back up your data before the operation.
/dev/vdbwithout a partition, you need to extend the file system.
- MBR partition supports disk with a maximum capacity of 2 TB.
- When you partition disk with a capacity greater than 2 TB, we recommend that you create and mount a new data disk and use the GPT partition format to copy data.
|Partition format||Expansion method||Description|
|-||Extending file systems||Applicable to scenarios where a file system is created directly on a bare device and no partition is created.|
|GPT||Assigning the expanded capacity to an existing GPT partition||Applicable to scenarios of direct formatting when no partition is created.|
|Formatting the expanded capacity into an independent new GPT partition||Applicable to scenarios where the original partitions remain unchanged and a new GPT partition is created for expansion.|
|MBR||Assigning the expanded capacity to an existing MBR partition||Applicable to scenarios of direct formatting when no partition is created.|
|Formatting the expanded capacity into an independent new MBR partition||Applicable to scenarios where the original partitions remain unchanged and a new MBR partition is created for expansion.|