The following list of request parameters only lists interface request parameters and some public parameters, For a complete list of public parameters see public request parameters.

Parameter name	Required	Allow NULL	Type	Description
Action	Yes	No	String	Public parameter, The value of this interface: DescribeBlockStorages
Version	Yes	No	String	Public parameter, The value of this interface: 2017-03-12
Region	No	No	String	Public parameter,Regional information A list of supported geographies is available through the DescribeRegions interface
Limit	No	No	Uint64	Number of returned values. The default value is 100, and the maximum value is 1000. For more information about `Limit`, refer to the relevant sections in API overview. Example: 20
Offset	No	No	Uint64	Offset. The default value is 0. For more information about offset, refer to the relevant sections in API overview. Example: 0
DiskIds	No	No	Array of String	Query by one or more cloud disk IDs. Example: ["disk-6rag8jef"]
InnerSearch	No	No	String	Used to support search box search, internal parameters. Example: ins-9oxguxa

3. Output Parameters

Parameter name	Type	Description
TotalCount	Uint64	Number of block storages that meet the criteria. Example: 0
DiskSet	Array of BlockStorage	Detailed information list of block storage. Example:View
RequestId	String	Unique request id, Each request will return. The RequestId of the request needs to be provided when locating the problem.

4. Error Code

The following lists only the error codes related to the interface business logic, For other error codes, see public ErrorCode.

Error Code	Description
InvalidParameterValue	Invalid parameter value. The format of the parameter value is incorrect or the parameter value is not supported.