Querying One Piece of Metadata for an EVS Disk

Function

This API is used to query one piece of the EVS disk metadata.

URI

• URI format

  GET /v3/{project_id}/volumes/{volume_id}/metadata/{key}

• Parameter description

  Parameter	Mandatory	Description
  project_id	Yes	Specifies the project ID.
  volume_id	Yes	Specifies the disk ID.
  key	Yes	Specifies the key of the piece of metadata to be queried.

Request

• Example request

  GET https://{endpoint}/v3/{project_id}/volumes/b104b8db-170d-441b-897a-3c8ba9c5a214/metadata/value1

Response

• Parameter description

  Parameter	Type	Description
  meta	Object	Specifies a piece of the disk metadata, which is made up of a key-value pair.
  error	Object	Specifies the error message returned when an error occurs. For details, see Parameters in the error field.

• Parameters in the error field

  Parameter	Type	Description
  message	String	Specifies the error message returned when an error occurs.
  code	String	Specifies the error code returned when an error occurs. For details about the error code, see Error Codes.

• Example response

  {
      "meta": {
          "key1": "value1"
      }
  }

  or

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

  In the preceding example, error indicates a general error, for example, badrequest or itemNotFound. An example is provided as follows:

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

Status Codes

• Normal

  200

Error Codes

For details, see Error Codes.