Enables the reverse replication feature for replication pairs that belong to a replication pair-consistent group. After reverse replication is enabled, data stored on the original secondary disks is replicated to the original primary disks. When a reverse replication is being performed, the primary and secondary sites of the replication pair-consistent group remain unchanged, but data is replicated from the secondary site to the primary site.
Operation description
Usage notes
- For information about the regions in which the replication pair-consistent group feature is available, see Overview .
- The replication pair-consistent group for which you want to enable reverse replication must be in the Failovered (
failovered) state. You can call theFailoverDiskReplicaPairoperation to enable failover. - Before a reverse replication is performed, the primary disks must be detached from its associated Elastic Compute Service (ECS) instance and must be in the Unattached state. You can call the DetachDisk operation to detach the disks.
- After you enable reverse replication, you must call the
StartDiskReplicaPairoperation again to enable the async replication feature before data can be replicated from the original secondary disks to the original primary disks. - You can set the ReverseReplicate parameter to false to cancel the Failovered (
failovered) state and restore the original replication direction.
Debugging
Authorization information
The following table shows the authorization information corresponding to the API. The authorization information can be used in the Action policy element to grant a RAM user or RAM role the permissions to call this API operation. Description:
- Operation: the value that you can use in the Action element to specify the operation on a resource.
- Access level: the access level of each operation. The levels are read, write, and list.
- Resource type: the type of the resource on which you can authorize the RAM user or the RAM role to perform the operation. Take note of the following items:
- The required resource types are displayed in bold characters.
- If the permissions cannot be granted at the resource level,
All Resourcesis used in the Resource type column of the operation.
- Condition Key: the condition key that is defined by the cloud service.
- Associated operation: other operations that the RAM user or the RAM role must have permissions to perform to complete the operation. To complete the operation, the RAM user or the RAM role must have the permissions to perform the associated operations.
| Operation | Access level | Resource type | Condition key | Associated operation |
|---|---|---|---|---|
| ebs:ReprotectDiskReplicaGroup | Write |
|
| none |
Request parameters
| Parameter | Type | Required | Description | Example |
|---|---|---|---|---|
| RegionId | string | Yes | The ID of the replication pair-consistent group. You can call the DescribeDiskReplicaGroups operation to query the IDs of replication pair-consistent groups. | cn-shanghai |
| ReplicaGroupId | string | Yes | The ID of the replication pair-consistent group. You can call the DescribeDiskReplicaGroups operation to query the IDs of replication pair-consistent groups. | pg-myreplica**** |
| ClientToken | string | No | The client token that is used to ensure the idempotence of the request. You can use the client to generate the token, but you must make sure that the token is unique among different requests. The token can contain only ASCII characters and cannot exceed 64 characters in length. For more information, see How to ensure idempotence. | 123e4567-e89b-12d3-a456-42665544**** |
| ReverseReplicate | boolean | No | Specifies whether to enable the reverse replication sub-feature. Valid values: true and false. Default value: true. | true |
Response parameters
Examples
Sample success responses
JSONformat
{
"RequestId": "C123F94F-4E38-19AE-942A-A8D6F44F****"
}Error codes
| HTTP status code | Error code | Error message | Description |
|---|---|---|---|
| 403 | OperationDenied | The operation is not allowed. | The operation is not supported. |
| 403 | OperationDenied.InvalidStatus | The operation is not allowed in current status. | The operation is not supported in the current state. |
| 403 | OperationDenied.NoPairInGroup | The operation is not allowed because no pair in the group. | The operation is not supported while the specified replication pair-consistent group has no replication pairs. |
| 403 | OperationDenied.OperateNotAllowedForPrimary | Operation is not allowed on the primary site. | The operation is not allowed on the primary site. |
| 403 | OperationDenied.OperateNotAllowedForStandby | Operation is not allowed on the secondary site. | The operation is not allowed on the secondary site. |
| 403 | Forbidden | User is not authorized to operate. | You are not authorized to manage the resource. Check the account permissions or contact the Alibaba Cloud account. |
| 403 | Forbidden.Action | User is not authorized to operate this action. | You are not authorized to perform this operation. Check the account permissions or contact the Alibaba Cloud account. |
| 404 | NoSuchResource | The specified resource does not exist. | The specified resource does not exist. |
| 500 | InternalError | The request processing has failed due to some unknown error, exception or failure. | An internal error has occurred. |
| 504 | RequestTimeout | The request is timeout, please try again later. | The request has timed out. Try again later. |
For a list of error codes, visit the Service error codes.
Change history
| Change time | Summary of changes | Operation | ||||||||
|---|---|---|---|---|---|---|---|---|---|---|
| 2023-09-21 | The Error code has changed. The request parameters of the API has changed | see changesets | ||||||||
| ||||||||||
| 2023-03-30 | The Error code has changed | see changesets | ||||||||
|