Help Center/ Elastic Volume Service/ API Reference/ Cinder API/ Disk Management/ Expanding Capacity of an EVS Disk
Updated on 2024-02-27 GMT+08:00
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Expanding Capacity of an EVS Disk

Function

This API is used to expand the capacity of an EVS disk.

Constraints

If the status of the to-be-expanded disk is available, there are no restrictions. If the status of the to-be-expanded disk is in-use, the restrictions are as follows:

  • A shared disk cannot be expanded, which means that the value of multiattach must be false.

  • The status of the server to which the disk attached must be ACTIVE, PAUSED, SUSPENDED, or SHUTOFF.

Calling Method

For details, see Calling APIs.

URI

POST /v2/{project_id}/volumes/{volume_id}/action

Table 1 Path Parameters

Parameter

Mandatory

Type

Description

project_id

Yes

String

The project ID.

For details about how to obtain the project ID, see Obtaining a Project ID.

volume_id

Yes

String

The ID of a non-yearly/monthly disk.

Request Parameters

Table 2 Request header parameters

Parameter

Mandatory

Type

Description

X-Auth-Token

Yes

String

The user token. It can be obtained by calling the IAM API used to obtain a user token. The value of X-Subject-Token in the response header is the user token.
Table 3 Request body parameters

Parameter

Mandatory

Type

Description

os-extend

Yes

CinderResizeVolumeOption object

The capacity expansion marker.
Table 4 CinderResizeVolumeOption

Parameter

Mandatory

Type

Description

new_size

Yes

Integer

The new disk size, in GiB.

The new disk size ranges from the original size to the maximum size (32768 GiB for a data disk and 1024 GiB for a system disk).

Response Parameters

Status code: 400

Table 5 Response body parameters

Parameter

Type

Description

error

Error object

The error message returned if an error occurs.
Table 6 Error

Parameter

Type

Description

code

String

The error code returned if an error occurs.

For details about error codes and their meanings, see Error Codes.

message

String

The error message returned if an error occurs.

Example Requests

Expanding the capacity of a disk to 100 GiB

POST https://{endpoint}/v2/{project_id}/volumes/{volume_id}/action

{
  "os-extend" : {
    "new_size" : 100
  }
}

Example Responses

Status code: 400

Bad Request

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

Status Codes

Status Code

Description

202

Accepted

400

Bad Request

Error Codes

See Error Codes.

Parent Topic: Disk Management