Function

This API is used to detach a disk from a BMS.

A disk attached to /dev/sda functions as the system disk. You can only detach the system disk from a stopped BMS.
Disks attached to a mount point other than /dev/sda function as data disks and can be detached from a running or stopped BMS.

Constraints

If a BMS is stopped, disks can be detached from it without any constraints on the OS. If a BMS is running, the constraints are as follows:

Before detaching an EVS disk from a Linux BMS, log in to the BMS, run the unmount command to disassociate the disk to be detached from the file system, and ensure that no program is reading data from or writing data to the disk. Otherwise, the disk will fail to be detached.
Before detaching an EVS disk from a Windows BMS, ensure that no program is reading data from or writing data to the disk. Otherwise, data will be lost.

URI

DELETE /v1/{project_id}/baremetalservers/{server_id}/detachvolume/{attachment_id}

Table 1 lists the parameters.

**Table 1** Parameter description
Parameter	Mandatory	Description
project_id	Yes	Specifies the project ID. For details about how to obtain the project ID, see Obtaining a Project ID.
server_id	Yes	Specifies the BMS ID. You can obtain the BMS ID from the BMS console or by calling the Querying BMSs (Native OpenStack API).
attachment_id	Yes	Specifies the IDs of the EVS disks attached to the BMS.

Request

Request parameters
None

Example request

DELETE https://{BMS Endpoint}/v1/bbf1946d374b44a0a2a95533562ba954/baremetalservers/cf2a8b97-b5c6-47ef-9714-eb27adf26e5b/detachvolume/6b604cef-9bd8-4f5a-ae56-45839e6e1f0a

Response

See Task ID Response.

Returned Values

Normal values

Returned Value	Description
202	The request has been accepted, but the processing has been delayed.

For details about other returned values, see Status Codes.

Error Codes

See Error Codes.