Querying Replication Pairs

Function

This API is used to query all replication pairs in a specified protection group. If you do not specify the protection group, the system lists all the replication pairs of the tenant.

Constraints and Limitations

None

URI

  • URI format

    GET /v1/{project_id}/replications

  • Parameter description

    Parameter

    Mandatory

    Type

    Description

    project_id

    Yes

    String

    Specifies the project ID.

  • Request filter field description

    Parameter

    Mandatory

    Type

    Description

    server_group_id

    No

    String

    Specifies the ID of a protection group.

    You can obtain this value by calling the API described in Querying Protection Groups.

    server_group_ids

    No

    Array of strings

    Specifies the protection group ID list. The value is in the following format: server_group_ids=['server_group_id1','server_group_id2',...,'server_group_idx']. Convert it using URL encoding.

    • All the replication pairs with valid server_group_id in server_group_ids are returned.

    • The replication pairs of a maximum of 30 server_group_id values can be queried.

    • If parameters server_group_id and server_group_ids are both specified in the request, server_group_id will be ignored.

    protected_instance_id

    No

    String

    Specifies the ID of a protected instance.

    You can obtain this value by calling the API described in Querying Protected Instances.

    protected_instance_ids

    No

    Array of strings

    Specifies the protected instance ID list. The value is in the following format: protected_instance_ids=['protected_instance_id1','protected_instance_id2',...,'protected_instance_idx']. Convert it using URL encoding.

    • All the replication pairs with valid protected_instance_id in protected_instance_ids are returned.

    • The replication pairs of a maximum of 30 protected_instance_id values can be queried.

    • If parameters protected_instance_id and protected_instance_ids are both specified in the request, protected_instance_id will be ignored.

    name

    No

    String

    Specifies the name of a replication pair. Fuzzy search is supported.

    status

    No

    String

    Specifies the status of a replication pair.

    For details, see Replication Pair Status.

    limit

    No

    Integer

    Specifies the maximum number of results returned each time. The value is a positive integer from 0 to 1000. The default value is 1000.

    offset

    No

    Integer

    Specifies the offset of each request. The default value is 0. The value must be a number and cannot be negative.

    query_type

    No

    String

    Specifies the query type.

    • To query replication pairs in the abnormal status, set query_type to status_abnormal.

    • Otherwise, set query_type to general or leave it empty.

    availability_zone

    No

    String

    Specifies the current production site AZ of the protection group containing the replication pair.

    You can obtain this value by calling the API described in Querying an Active-Active Domain.

    volume_id

    No

    String

    Specifies the ID of the disk used to create a replication pair.

Request

  • Request parameters

    None

  • Example request

    https://{Endpoint}/v1/{project_id}/replications?server_group_ids=%5b%2221d65fa4-430e-4761-b9ad-4e27364f874c%22%2c%22943c7d15-0371-4b89-b1a6-db1ef35c9263&status=available
    

    Note

    Use URL encoding for server_group_ids or protected_instance_ids.

Response

  • Parameter description

    Parameter

    Type

    Description

    replications

    Array of objects

    Specifies the information about replication pairs.

    For details, see Table 1.

    count

    Integer

    Specifies the number of replication pairs.

    Table 1 replications field description

    Parameter

    Type

    Description

    id

    String

    Specifies the ID of a replication pair.

    name

    String

    Specifies the name of a replication pair.

    description

    String

    Specifies the description of a replication pair.

    replication_model

    String

    Specifies the replication mode of a replication pair. The default value is hypermetro, indicating synchronous replication.

    status

    String

    Specifies the status of a replication pair.

    For details, see Replication Pair Status.

    progress

    Integer

    Specifies the synchronization progress of a replication pair.

    Unit: %

    replication_status

    String

    Specifies the data synchronization status.

    • active: Data has been synchronized.

    • inactive: Data is not synchronized.

    • copying: Data is being synchronized.

    • active-stopped: Data synchronization is stopped.

    attachment

    Array of objects

    Specifies the device name.

    For details, see Table 2.

    server_group_id

    String

    Specifies the ID of a protection group.

    volume_ids

    String

    Specifies the ID of the disk used to create a replication pair.

    priority_station

    String

    Specifies the current production site AZ of the protection group containing the replication pair.

    • source: indicates that the current production site AZ is the source_availability_zone value.

    • target: indicates that the current production site AZ is the target_availability_zone value.

    fault_level

    String

    Specifies the fault level of a replication pair.

    • 0: No fault occurs.

    • 2: The disk of the current production site does not have read/write permissions. In this case, you are advised to perform a failover.

    • 5: The replication link is disconnected. In this case, a failover is not allowed. Contact the administrator.

    created_at

    String

    Specifies the time when a replication pair was created.

    The default format is as follows: ""yyyy-MM-ddTHH:mm:ss.SSSSSS", for example, 2019-04-01T12:00:00.000000.

    updated_at

    String

    Specifies the time when a replication pair was updated.

    The default format is as follows: ""yyyy-MM-ddTHH:mm:ss.SSSSSS", for example, 2019-04-01T12:00:00.000000.

    record_metadata

    Object

    Specifies the SDR data of a replication pair.

    For details, see Table 3.

    failure_detail

    String

    Specifies the error code returned only when status of a replication pair is error.

    For details, see the returned value in Error Codes.

    Table 2 attachment field description

    Parameter

    Type

    Description

    device

    String

    Specifies the device name.

    protected_instance

    String

    Specifies the ID of the protected instance to which the replication pair is attached.

    Table 3 record_metadata field description

    Parameter

    Type

    Description

    multiattach

    Boolean

    Specifies whether the disk in a replication pair is a shared disk.

    bootable

    Boolean

    Specifies whether the disk in a replication pair is a system disk.

    volume_size

    Integer

    Specifies the size of the disk in a replication pair. Unit: GB

    volume_type

    String

    Specifies the type of the disk in a replication pair.

    Currently, the value can be SSD and SAS.

    • SSD: specifies the ultra-high I/O disk type.

    • SAS: specifies the high I/O disk type.

  • Example response

    {
        "count": 1,
        "replications": [
            {
                "id": "b93bc1c4-67ee-45a1-bc8a-d022fdd28811",
                "name": "test_replication_name",
                "description": "description_test",
                "replication_model": "hypermetro",
                "status": "available",
                "progress": 0,
                "replication_status": "active",
                "attachment": [
                    {
                        "device": "/dev/vda",
                        "protected_instance": "8a7a6339-679b-452b-948c-144e0ef85d9e"
                    }
                ],
                "server_group_id": "c2aee29a-2959-4d01-9755-01cc76a4d17d",
                "volume_ids": "48dda0c0-c800-46f2-9728-a519ff783d35,388b324a-a9d1-44a4-a00d-42085f22a9bc",
                "priority_station": "source",
                "fault_level": "0",
                "created_at": "2018-05-04T03:43:24.108526",
                "updated_at": "2018-05-04T03:44:28.322873",
                "record_metadata": {
                    "multiattach": false,
                    "bootable": false,
                    "volume_size": 10,
                    "volume_type": "SATA"
                }
            }
        ]
    }
    

    Or

    {
         "error": {
             "message": "XXXX",
             "code": "XXX"
         }
     }
    

    In this example, error represents a general error, including badrequest (shown below) and itemNotFound.

    {
         "badrequest": {
             "message": "XXXX",
             "code": "XXX"
         }
     }
    

Returned Values

  • Normal

    Returned Value

    Description

    200

    The server has accepted the request.

  • Abnormal

    Returned Value

    Description

    400 Bad Request

    The server failed to process the request.

    401 Unauthorized

    You must enter a username and the password to access the requested page.

    403 Forbidden

    You are forbidden to access the requested page.

    404 Not Found

    The server could not find the requested page.

    405 Method Not Allowed

    You are not allowed to use the method specified in the request.

    406 Not Acceptable

    The response generated by the server could not be accepted by the client.

    407 Proxy Authentication Required

    You must use the proxy server for authentication so that the request can be processed.

    408 Request Timeout

    The request timed out.

    409 Conflict

    The request could not be processed due to a conflict.

    500 Internal Server Error

    Failed to complete the request because of a service error.

    501 Not Implemented

    Failed to complete the request because the server does not support the requested function.

    502 Bad Gateway

    Failed to complete the request because the server receives an invalid response from an upstream server.

    503 Service Unavailable

    Failed to complete the request because the system is unavailable.

    504 Gateway Timeout

    A gateway timeout error occurred.