Querying Details About a Disk

Function

This API is used to query details about a disk.

URI

• URI format

  GET /v3/{project_id}/volumes/{volume_id}

• Parameter description

  Parameter	Mandatory	Description
  project_id	Yes	Specifies the project ID.
  volume_id	Yes	Specifies the disk ID.

Request

• Example request

  GET https://{endpoint}/v3/{project_id}/volumes/b104b8db-170d-441b-897a-3c8ba9c5a214

Response

• Parameter description

  Parameter	Type	Description
  volume	Object	Specifies the queried disk. For details, see Parameters in the volume field.
  error	Object	Specifies the error message returned when an error occurs. For details, see Parameters in the error field.

• Parameters in the volume field

  Parameter	Type	Description
  id	String	Specifies the disk ID.
  links	list<map<String, String>>	Specifies the disk URI. For details, see Parameters in the links field.
  name	String	Specifies the disk name.
  status	String	Specifies the disk status. For details, see EVS Disk Status.
  attachments	list<map<String, String>>	Specifies the disk attachment information. For details, see Parameters in the attachments field.
  availability_zone	String	Specifies the AZ to which the disk belongs.
  source_volid	String	Specifies the source disk ID. This parameter has a value if the disk is created from a source disk. Currently, this field is not supported by EVS.
  snapshot_id	String	Specifies the snapshot ID. This parameter has a value if the disk is created from a snapshot.
  description	String	Specifies the disk description.
  os-vol-tenant-attr:tenant_id	String	Specifies the ID of the tenant to which the disk belongs. The tenant ID is actually the project ID.
  volume_image_metadata	Object	Specifies the metadata of the disk image. NOTE: For details about volume_image_metadata, see Querying Image Details (Native OpenStack API) in the Image Management Service API Reference.
  created_at	String	Specifies the time when the disk was created. Time format: UTC YYYY-MM-DDTHH:MM:SS.XXXXXX
  volume_type	String	Specifies the disk type. Currently, the value can be SSD, SAS, SATA, co-p1, or uh-l1. SSD: specifies the ultra-high I/O disk type. SAS: specifies the high I/O disk type. SATA: specifies the common I/O disk type. co-p1: specifies the high I/O (performance-optimized I) disk type. uh-l1: specifies the ultra-high I/O (latency-optimized) disk type. Disks of the co-p1 and uh-l1 types are used exclusively for HPC ECSs and SAP HANA ECSs.
  size	Integer	Specifies the disk size, in GB.
  bootable	String	Specifies whether the disk is bootable. true: specifies a bootable disk. false: specifies a non-bootable disk.
  metadata	Object	Specifies the disk metadata. For details, see Parameters in the metadata field. If metadata does not contain the hw:passthrough field, the disk device type is VBD. If metadata does not contain the __system__encrypted field, the disk is not encrypted.
  os-vol-host-attr:host	String	Reserved field
  encrypted	Boolean	Currently, this field is not supported by EVS.
  updated_at	String	Specifies the time when the disk was updated. Time format: UTC YYYY-MM-DDTHH:MM:SS.XXXXXX
  os-volume-replication:extended_status	String	Reserved field
  replication_status	String	Reserved field
  os-vol-mig-status-attr:migstat	String	Reserved field
  consistencygroup_id	String	Reserved field
  os-vol-mig-status-attr:name_id	String	Reserved field
  shareable	Boolean	Specifies whether the disk is shareable. NOTE: This field is no longer used. Use multiattach.
  user_id	String	Reserved field
  multiattach	Boolean	Specifies whether the disk is shareable. true: specifies a shared disk. false: specifies a non-shared disk.
  storage_cluster_id	String	Reserved field

• Parameters in the links field

  Parameter	Type	Description
  href	String	Specifies the corresponding shortcut link.
  rel	String	Specifies the shortcut link marker name.

• Parameters in the attachments field

  Parameter	Type	Description
  server_id	String	Specifies the ID of the server to which the disk is attached.
  attachment_id	String	Specifies the ID of the attachment information.
  attached_at	String	Specifies the time when the disk was attached.
  host_name	String	Specifies the name of the physical host accommodating the server to which the disk is attached.
  volume_id	String	Specifies the disk ID.
  device	String	Specifies the device name.
  id	String	Specifies the ID of the attached resource.

• Parameters in the metadata field

  Parameter	Type	Description
  __system__encrypted	String	Specifies the parameter that describes the encryption function in metadata. The value can be 0 or 1. 0: indicates the disk is not encrypted. 1: indicates the disk is encrypted. If this parameter does not appear, the disk is not encrypted by default.
  __system__cmkid	String	Specifies the encryption CMK ID in metadata. This parameter is used together with __system__encrypted for encryption. The length of cmkid is fixed at 36 bytes.
  hw:passthrough	String	Specifies the parameter that describes the disk device type in metadata. The value can be true or false. If this parameter is set to true, the disk device type is SCSI, which allows ECS OSs to directly access the underlying storage media and supports SCSI reservation commands. If this parameter is set to false, the disk device type is VBD (the default type), that is, Virtual Block Device (VBD), which supports only simple SCSI read/write commands. If this parameter does not appear, the disk device type is VBD.
  full_clone	String	Specifies the clone method. When the disk is created from a snapshot, the parameter value is 0, indicating the linked cloning method.

• Parameters in the error field

  Parameter	Type	Description
  message	String	Specifies the error message returned when an error occurs.
  code	String	Specifies the error code returned when an error occurs. For details about the error code, see Error Codes.

• Example response

  {
      "volume": {
          "attachments": [ ], 
          "links": [
              {
                  "href": "https://volume.az0.dc1.domainname.com/v2/40acc331ac784f34842ba4f08ff2be48/volumes/591ac654-26d8-41be-bb77-4f90699d2d41", 
                  "rel": "self"
              }, 
              {
                  "href": "https://volume.az0.dc1.domainname.com/40acc331ac784f34842ba4f08ff2be48/volumes/591ac654-26d8-41be-bb77-4f90699d2d41", 
                  "rel": "bookmark"
              }
          ], 
          "availability_zone": "az-dc-1", 
          "os-vol-host-attr:host": "az-dc-1#SSD", 
          "encrypted": false, 
          "multiattach": true, 
          "updated_at": "2016-02-03T02:19:29.895237", 
          "os-volume-replication:extended_status": null, 
          "replication_status": "disabled", 
          "snapshot_id": null, 
          "id": "591ac654-26d8-41be-bb77-4f90699d2d41", 
          "size": 40, 
          "user_id": "fd03ee73295e45478d88e15263d2ee4e", 
          "os-vol-tenant-attr:tenant_id": "40acc331ac784f34842ba4f08ff2be48", 
          "volume_image_metadata": null, 
          "os-vol-mig-status-attr:migstat": null, 
          "metadata": {}, 
          "status": "error_restoring", 
          "description": "auto-created_from_restore_from_backup", 
          "source_volid": null, 
          "consistencygroup_id": null, 
          "os-vol-mig-status-attr:name_id": null, 
          "name": "restore_backup_0115efb3-678c-4a9e-bff6-d3cd278238b9", 
          "bootable": "false", 
          "created_at": "2016-02-03T02:19:11.723797", 
          "volume_type": null
      }
  }

  or

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

  In the preceding example, error indicates a general error, for example, badrequest or itemNotFound. An example is provided as follows:

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

Status Codes

• Normal

  200

Error Codes

For details, see Error Codes.