Rolls back a disk by using a snapshot.


  • You can call this operation to roll back a disk only when the associated simple application server is in the Stopped state.
  • After a disk is rolled back, all data changes that are made from when the snapshot was created to when the disk is rolled back are lost. Back up disk data based on your needs before you roll back the disk.

QPS limits

The queries per second (QPS) limit for a single user for the API operation is 10 calls per minute. If the number of calls to the API operation per minute exceeds the limit, throttling is triggered. As a result, your business may be affected. We recommend that you take note of the limit when you call this operation. For more information, see QPS limit.

Request parameters

Parameter Type Required Example Description
RegionId String Yes cn-hangzhou

The region ID of the simple application server to which the snapshot corresponds.

DiskId String Yes d-bp14wq0149cpp2xy****

The ID of the disk to be rolled back.

ClientToken String No 123e4567-e89b-12d3-a456-426655440000

The client token that is used to ensure the idempotence of the request. You can use the client to generate the value, but you must ensure that it is unique among different requests. The token can only contain ASCII characters and cannot exceed 64 characters in length. For more information, see How to ensure idempotence.

SnapshotId String Yes s-bp16oazlsold4dks****

The ID of the snapshot.

Action String Yes ResetDisk

The operation that you want to perform. Set the value to ResetDisk.

Response parameters

Parameter Type Example Description
RequestId String 20758A-585D-4A41-A9B2-28DA8F4F534F

The ID of the request.


Sample requests
&<Common request parameters>

Sample success responses

XML format

HTTP/1.1 200 OK


JSON format

HTTP/1.1 200 OK

  "RequestId" : "20758A-585D-4A41-A9B2-28DA8F4F534F"

Error codes

HTTP status code Error code Error message Description
403 IncorrectInstanceStatus.ResetDisk Rolling back the disk requires the instance to operate in a stopped state. The error message returned because the simple application server is not in the Stopped state. The server must be stopped before its disks can be rolled back.
404 InvalidDiskId.NotFound The specified DiskId does not exist. The error message returned because the specified DiskId parameter is invalid.
404 InvalidSnapshotId.NotFound The specified SnapshotId does not exist. The error message returned because the specified SnapshotId parameter is invalid.
500 InternalError An error occurred while processing your request. The error message returned because an internal error has occurred. Try again later. If the problem persists, submit a ticket.

For a list of error codes, visit the API Error Center.