# Querying Details About extra_specs Parameters of a BMS Flavor (Native OpenStack API)

#### Function

extra_specs parameters specify the key-value pair of a BMS flavor. For example, baremetal:extBootType specifies the boot device of the BMS. Its value can be LocalDisk (local disk) or Volume (EVS disk). If you want to check whether a flavor supports quick provisioning, you can call this API.

#### URI

GET /v2.1/{project_id}/flavors/{flavor_id}/os-extra_specs

Table 1 lists the parameters.

Table 1 Parameter description
Parameter | Mandatory | Description
--- | --- | ---
project_id | Yes | Specifies the project ID. For how to obtain the project ID, see Obtaining Required Information.
flavor_id | Yes | Specifies the flavor ID. You can obtain the flavor ID from the BMS console or using the Querying BMS Flavors (Native OpenStack API) API.

#### Request

- Request parameters

  None

- Example request

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      GET https://{ECS Endpoint}/v2.1/c685484a8cc2416b97260938705deb65/flavors/physical.s2.medium/os-extra_specs

#### Response

- Response parameters

  Parameter | Type | Description
  --- | --- | ---

  extra_specs

  Object

  Specifies the key-value pair of a BMS flavor.
  - capabilities:cpu_arch: specifies the CPU architecture of the BMS. The value can be x86_64 (for x86 servers) or aarch64 (for ARM servers).
  - baremetal:disk_detail: specifies the disk description.
  - capabilities:hypervisor_type: specifies the hypervisor type. The value is fixed at ironic.
  - baremetal:__support_evs: specifies whether to support EVS disks. The value can be true or false. If the flavor does not contain this parameter, EVS disks are not supported either.
  - baremetal:extBootType: specifies the boot device of the BMS. The value can be LocalDisk (local disk) or Volume (EVS disk).
  - baremetal:net_num: specifies the number of NICs that can be attached to a BMS.
  - baremetal:netcard_detail: specifies description of the NIC.
  - baremetal:cpu_detail: specifies description of the CPU.
  - resource_type: specifies the resource type. The value is fixed at ironic.
  - baremetal:memory_detail: specifies description of the memory.

- Example response

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      {
          "extra_specs": {
              "capabilities:cpu_arch": "x86_64",
              "baremetal:disk_detail": "SAS 8T",
              "capabilities:hypervisor_type": "ironic",
              "baremetal:__support_evs": "true",
              "baremetal:extBootType": "LocalDisk",
              "capabilities:board_type": "s2m",
              "baremetal:net_num": "2",
              "baremetal:netcard_detail": "2*10GE",
              "baremetal:cpu_detail": "2*8coreIntel Xeon E5-2667 V43.2GHz",
              "resource_type": "ironic",
              "baremetal:memory_detail": "256GB DDR4 RAM(GB)"
          }
      }

#### Returned Values

Normal values

Returned Values | Description
--- | ---
200 | The request has been successfully processed.

For details about other returned values, see Status Codes.

#### Error Codes

See Error Codes.

Parent topic: BMS Flavor Query