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Querying Information About the Disks Attached to an ECS

Function

This API is used to query information about disks attached to an ECS.

URI

GET /v1/{project_id}/cloudservers/{server_id}/block_device

Table 1 describes the parameters in the URI.
Table 1 Parameter description

Parameter

Mandatory

Description

project_id

Yes

Specifies the project ID.

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

server_id

Yes

Specifies the ECS ID in UUID format.

Request

None

Response

Table 2 describes the response parameters.
Table 2 Response parameters

Parameter

Type

Description

volumeAttachments

Array of objects

Specifies the disks attached to an ECS. For details, see Table 3.

attachableQuantity

Object

Specifies the number of disks that can be attached to an ECS. For details, see Table 4.
Table 3 volumeAttachments parameters

Parameter

Type

Description

serverId

String

Specifies the ECS ID in UUID format.

volumeId

String

Specifies the EVS disk ID in UUID format.

id

String

Specifies the mount ID, which is the same as the EVS disk ID.

The value is in UUID format.

size

Integer

Specifies the EVS disk size in GB.

device

String

Specifies the drive letter of the EVS disk, which is the device name of the EVS disk.

pciAddress

String

Specifies the PCI address.

bootIndex

Integer

Specifies the EVS disk boot sequence.

  • 0 indicates the system disk.
  • Non-0 indicates a data disk.

bus

String

Specifies the disk bus type.

Options: virtio and scsi
Table 4 attachableQuantity parameters

Parameter

Type

Description

free_scsi

Integer

Specifies the number of SCSI disks that can be attached to an ECS.

free_blk

Integer

Specifies the number of virtio_blk disks that can be attached to an ECS.

free_disk

Integer

Specifies the total number of disks that can be attached to an ECS.

Example Request

GET https://{endpoint}/v1/{project_id}/cloudservers/{server_id}/block_device

Example Response

{
    "attachableQuantity": {
            "free_scsi": 23,
            "free_blk": 15,
            "free_disk": 23
     },
    "volumeAttachments": [
        {
            "pciAddress": "0000:02:01.0",
            "volumeId": "a26887c6-c47b-4654-abb5-dfadf7d3f803",
            "device": "/dev/vda",
            "serverId": "4d8c3732-a248-40ed-bebc-539a6ffd25c0",
            "id": "a26887c6-c47b-4654-abb5-dfadf7d3f803",
            "size": "40",
            "bootIndex": 0,
            "bus":"virtio"
        },
        {
            "pciAddress": "0000:02:02.0",
            "volumeId": "a26887c6-c47b-4654-abb5-asdf234r234r",
            "device": "/dev/vdb",
            "serverId": "4d8c3732-a248-40ed-bebc-539a6ffd25c0",
            "id": "a26887c6-c47b-4654-abb5-asdf234r234r",
            "size": "10",
            "bootIndex": 1,
            "bus":"virtio"
        }
    ]
}

Returned Values

See Returned Values for General Requests.

Error Codes

See Error Code Description.

Parent topic: Disk Management