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Retrieve an NVMe subsystem

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GET /protocols/nvme/subsystems/{uuid}

Introduced In: 9.6

Retrieves an NVMe subsystem.

Expensive properties

There is an added cost to retrieving values for these properties. They are not included by default in GET results and must be explicitly requested using the fields query parameter. See Requesting specific fields to learn more.

  • subsystem_maps.*

  • vserver nvme subsystem host show

  • vserver nvme subsystem map show

  • vserver nvme subsystem show

Learn more

Parameters

Name Type In Required Description

uuid

string

path

True

The unique identifier of the NVMe subsystem.

fields

array[string]

query

False

Specify the fields to return.

Response

Status: 200, Ok
Name Type Description

_links

_links

comment

string

A configurable comment for the NVMe subsystem. Optional in POST and PATCH.

delete_on_unmap

boolean

An option that causes the subsystem to be deleted when the last subsystem map associated with it is deleted. This property defaults to false when the subsystem is created.

hosts

array[hosts]

The NVMe hosts configured for access to the NVMe subsystem. Optional in POST.

io_queue

io_queue

The properties of the submission queue used to submit I/O commands for execution by the NVMe controller.

name

string

The name of the NVMe subsystem. Once created, an NVMe subsystem cannot be renamed. Required in POST.

os_type

string

The host operating system of the NVMe subsystem's hosts. Required in POST.

serial_number

string

The serial number of the NVMe subsystem.

subsystem_maps

array[subsystem_maps]

The NVMe namespaces mapped to the NVMe subsystem.

There is an added cost to retrieving property values for subsystem_maps. They are not populated for either a collection GET or an instance GET unless explicitly requested using the fields query parameter. See Requesting specific fields to learn more.

svm

svm

target_nqn

string

The NVMe qualified name (NQN) used to identify the NVMe storage target.

uuid

string

The unique identifier of the NVMe subsystem.

vendor_uuids

array[string]

Vendor-specific identifiers (UUIDs) optionally assigned to an NVMe subsystem when the subsystem is created. The identifiers are used to enable vendor-specific NVMe protocol features. The identifiers are provided by a host application vendor and shared with NetApp prior to a joint product release. Creating an NVMe subsystem with an unknown or non-specific identifier will have no effect on the NVMe subsystem. Refer to the ONTAP SAN Administration Guide for a list of the supported vendor-specific identifiers. After a subsystem is created, the vendor-specific identifiers cannot be changed or removed. Optional in POST.

  • Introduced in: 9.9

  • readCreate: 1
Example response 
{
  "_links": {
    "self": {
      "href": "/api/resourcelink"
    }
  },
  "comment": "string",
  "hosts": [
    {
      "nqn": "nqn.1992-01.example.com:string"
    }
  ],
  "io_queue": {
    "default": {
      "count": "4",
      "depth": "16"
    }
  },
  "name": "subsystem1",
  "os_type": "string",
  "serial_number": "wCVsgFMiuMhVAAAAAAAB",
  "subsystem_maps": [
    {
      "_links": {
        "self": {
          "href": "/api/resourcelink"
        }
      },
      "anagrpid": "00103050h",
      "namespace": {
        "_links": {
          "self": {
            "href": "/api/resourcelink"
          }
        },
        "name": "/vol/vol1/namespace1",
        "uuid": "1cd8a442-86d1-11e0-ae1c-123478563412"
      },
      "nsid": "00000001h"
    }
  ],
  "svm": {
    "_links": {
      "self": {
        "href": "/api/resourcelink"
      }
    },
    "name": "svm1",
    "uuid": "02c9e252-41be-11e9-81d5-00a0986138f7"
  },
  "target_nqn": "nqn.1992-01.example.com:string",
  "uuid": "1cd8a442-86d1-11e0-ae1c-123478563412",
  "vendor_uuids": [
    "1447f0f4-42e5-0dfc-871a-dc9b3f92d8f8"
  ]
}

Error

Status: Default, Error
Name Type Description

error

error
Example error 
{
  "error": {
    "arguments": [
      {
        "code": "string",
        "message": "string"
      }
    ],
    "code": "4",
    "message": "entry doesn't exist",
    "target": "uuid"
  }
}

Definitions

See Definitions

href

Name Type Description

href

string

_links

Name Type Description

self

href

hosts

Name Type Description

nqn

string

The NVMe qualified name (NQN) used to identify the NVMe storage target.

default

The default I/O queue parameters inherited by NVMe hosts in the NVMe subsystem.

Name Type Description

count

integer

The number of host I/O queue pairs.

depth

integer

The host I/O queue depth.

io_queue

The properties of the submission queue used to submit I/O commands for execution by the NVMe controller.

Name Type Description

default

default

The default I/O queue parameters inherited by NVMe hosts in the NVMe subsystem.

namespace

An NVMe namespace mapped to the NVMe subsystem.

Name Type Description

_links

_links

name

string

The name of the NVMe namespace.

uuid

string

The unique identifier of the NVMe namespace.

subsystem_maps

An NVMe namespace mapped to the NVMe subsystem.

Name Type Description

_links

_links

anagrpid

string

The Asymmetric Namespace Access Group ID (ANAGRPID) of the NVMe namespace.

The format for an ANAGRPIP is 8 hexadecimal digits (zero-filled) followed by a lower case "h".

namespace

namespace

An NVMe namespace mapped to the NVMe subsystem.

nsid

string

The NVMe namespace identifier. This is an identifier used by an NVMe controller to provide access to the NVMe namespace.

The format for an NVMe namespace identifier is 8 hexadecimal digits (zero-filled) followed by a lower case "h".

svm

Name Type Description

_links

_links

name

string

The name of the SVM.

uuid

string

The unique identifier of the SVM.

error_arguments

Name Type Description

code

string

Argument code

message

string

Message argument

error

Name Type Description

arguments

array[error_arguments]

Message arguments

code

string

Error code

message

string

Error message

target

string

The target parameter that caused the error.