# Querying a Disk Attached to an ECS

#### Function

This API is used to query a disk attached to an ECS based on the disk ID.

#### URI

GET /v2.1/{project_id}/servers/{server_id}/os-volume_attachments/{volume_id}

GET /v2/{project_id}/servers/{server_id}/os-volume_attachments/{volume_id}

Table 1 describes the parameters in the URI.

Table 1 Parameter description
Parameter | Mandatory | Description
--- | --- | ---
project_id | Yes | Specifies the project ID.
server_id | Yes | Specifies the ECS ID.
volume_id | Yes | Specifies the disk ID.

#### Request

None

#### Response

Table 2 describes the response parameters.

Table 2 Response parameters
Parameter | Type | Description
--- | --- | ---
volumeAttachment | Object | Specifies the disks attached to an ECS. For details, see Table 3.

Table 3 volumeAttachment field description
Parameter | Type | Description
--- | --- | ---
device | String | Specifies the attached directory.
id | String | Specifies the ID of the attached resource.
serverId | String | Specifies the ECS ID.
volumeId | String | Specifies the ID of the attached disk.

#### Example Request

    GET https://{endpoint}/v2/{project_id}/servers/{server_id}/os-volume_attachments/{volume_id}
    GET https://{endpoint}/v2.1/{project_id}/servers/{server_id}/os-volume_attachments/{volume_id}

#### Example Response

    {
        "volumeAttachment":
            {
                "device": "/dev/sdd",
                "id": "a26887c6-c47b-4654-abb5-dfadf7d3f803",
                "serverId": "4d8c3732-a248-40ed-bebc-539a6ffd25c0",
                "volumeId": "a26887c6-c47b-4654-abb5-dfadf7d3f803"
            }
     }

#### Returned Values

See Returned Values for General Requests.

Parent topic: Disk Management