Last updated: 2019-09-09 20:17:31

1. API Description

Domain name for API request:

This API (ApplySnapshot) is used to roll back a cloud disk to a previous version using snapshot.

  • The snapshot can only be rolled back to the original cloud disk. If you want to duplicate data on a data disk snapshots to other cloud disks, please use the API CreateDisks to create one or more elastic cloud disks and then copy the snapshot data to the created cloud disks.
  • The snapshot for rollback must be in NORMAL status. The snapshot status can be queried in the SnapshotState field in the output parameter of API DescribeSnapshots.
  • For elastic cloud disks, the cloud disk must be in UNMOUNTED status. You can check the status in the Attached filed returned by API DescribeDisks. For non-elastic cloud disks purchased together with instances, the instance must be in SHUTDOWN status. You can check the status using API DescribeInstancesStatus.

Default request rate limit: 20/sec.

Note: This API supports finance AZs. As finance AZs and non-finance AZs are isolated, when accessing the services in a finance AZ (with the common parameter Region specifying a financial availability zone), it is necessary to specify a domain name with the finance AZ, preferably in the same region as specified in Region.

2. Input Parameters

The list below contains only the API request parameters and certain common parameters. For the complete common parameter list, see Common Request Parameters.

Parameter Name Required Type Description
Action Yes String Common parameter. Value​used in this API: ApplySnapshot
Version Yes String Common parameter. The value used for this API: 2017-03-12
Region Yes String Common parameter. For more information, see List of Regions supported by the product.
SnapshotId Yes String Snapshot ID, which can be queried via DescribeSnapshots.
DiskId Yes String ID of the original cloud disk corresponding to the snapshot, which can be queried via the API DescribeDisks.

3. Output Parameters

Parameter Name Type Description
RequestId String Unique ID of the request. Each request returns a unique ID. The RequestId is required to troubleshoot issues.

4. Samples

Sample 1. Creating a Snapshot

Input Sample Code
&<Common request parameters>

Output Sample Code

  "Response": {
    "RequestId": "cc96242e-566c-ae6a-b74a-5a1f823683b2"

5. Resources for Developers

API Explorer

This tool allows online call, signature authentication, SDK code generation and quick search of APIs to greatly improve the efficiency of using TencentCloud APIs.


TencentCloud API 3.0 comes with SDKs that support multiple programming languages and make it easier to call the APIs.

Command line tools

6. Error Codes

The following only lists the error codes related to this API. For other error codes, see Common Error Codes.

Error Code Description
InvalidDisk.Busy The cloud disk is busy. Try again later.
InvalidDisk.NotSupported This operation is not supported for cloud disks.
InvalidDisk.SnapshotCreating A snapshot is being created for the cloud disk. Try again later.
InvalidDiskId.NotFound The DiskId does not exist.
InvalidInstanceId.NotFound The InstanceId of the instance does not exist.
InvalidParameter.DiskSizeNotMatch The size of the cloud disk does not match the snapshot size.
InvalidParameterValue Invalid parameter value. Parameter value is in an incorrect format or is not supported.
InvalidSnapshot.NotSupported This operation is not supported for the snapshot.
InvalidSnapshotId.NotFound The SnapshotId does not exist.
MissingParameter Missing parameter. A required parameter is missing in the request.
ResourceBusy The resource is busy. Try again later.