Retrieve NVMe subsystem controllers
GET /protocols/nvme/subsystem-controllers
Introduced In: 9.6
Retrieves NVMe subsystem controllers.
Related ONTAP commands
- 
vserver nvme subsystem controller show 
Learn more
Parameters
| Name | Type | In | Required | Description | 
|---|---|---|---|---|
id  | 
string  | 
query  | 
False  | 
Filter by id  | 
subsystem.uuid  | 
string  | 
query  | 
False  | 
Filter by subsystem.uuid  | 
subsystem.name  | 
string  | 
query  | 
False  | 
Filter by subsystem.name  | 
host.nqn  | 
string  | 
query  | 
False  | 
Filter by host.nqn  | 
host.transport_address  | 
string  | 
query  | 
False  | 
Filter by host.transport_address  | 
host.id  | 
string  | 
query  | 
False  | 
Filter by host.id  | 
node.uuid  | 
string  | 
query  | 
False  | 
Filter by node.uuid  | 
node.name  | 
string  | 
query  | 
False  | 
Filter by node.name  | 
interface.uuid  | 
string  | 
query  | 
False  | 
Filter by interface.uuid  | 
interface.name  | 
string  | 
query  | 
False  | 
Filter by interface.name  | 
interface.transport_address  | 
string  | 
query  | 
False  | 
Filter by interface.transport_address  | 
admin_queue.depth  | 
integer  | 
query  | 
False  | 
Filter by admin_queue.depth  | 
svm.uuid  | 
string  | 
query  | 
False  | 
Filter by svm.uuid  | 
svm.name  | 
string  | 
query  | 
False  | 
Filter by svm.name  | 
io_queue.count  | 
integer  | 
query  | 
False  | 
Filter by io_queue.count  | 
io_queue.depth  | 
integer  | 
query  | 
False  | 
Filter by io_queue.depth  | 
fields  | 
array[string]  | 
query  | 
False  | 
Specify the fields to return.  | 
max_records  | 
integer  | 
query  | 
False  | 
Limit the number of records returned.  | 
return_records  | 
boolean  | 
query  | 
False  | 
The default is true for GET calls. When set to false, only the number of records is returned. 
  | 
return_timeout  | 
integer  | 
query  | 
False  | 
The number of seconds to allow the call to execute before returning. When iterating over a collection, the default is 15 seconds. ONTAP returns earlier if either max records or the end of the collection is reached. 
  | 
order_by  | 
array[string]  | 
query  | 
False  | 
Order results by specified fields and optional [asc  | 
Response
Status: 200, Ok
| Name | Type | Description | 
|---|---|---|
_links  | 
||
num_records  | 
integer  | 
Number of records.  | 
records  | 
array[nvme_subsystem_controller]  | 
Example response
{
  "_links": {
    "next": {
      "href": "/api/resourcelink"
    },
    "self": {
      "href": "/api/resourcelink"
    }
  },
  "records": [
    {
      "_links": {
        "self": {
          "href": "/api/resourcelink"
        }
      },
      "admin_queue": {
        "depth": 0
      },
      "host": {
        "id": "b8546ca6097349e5b1558dc154fc073b",
        "nqn": "nqn.2014-08.org.nvmexpress:uuid:c2846cb1-89d2-4020-a3b0-71ce907b4eef",
        "transport_address": "nn-0x20000090fae00806:pn-0x10000090fae00806"
      },
      "id": "0040h",
      "interface": {
        "name": "lif1",
        "transport_address": "nn-0x200400a0989a1c8d:pn-0x200500a0989a1c8d",
        "uuid": "fa1c5941-2593-11e9-94c4-00a0989a1c8e"
      },
      "io_queue": {
        "count": 0,
        "depth": [
          "integer"
        ]
      },
      "node": {
        "_links": {
          "self": {
            "href": "/api/resourcelink"
          }
        },
        "name": "node1",
        "uuid": "1cd8a442-86d1-11e0-ae1c-123478563412"
      },
      "subsystem": {
        "_links": {
          "self": {
            "href": "/api/resourcelink"
          }
        },
        "name": "string",
        "uuid": "1cd8a442-86d1-11e0-ae1c-123478563412"
      },
      "svm": {
        "_links": {
          "self": {
            "href": "/api/resourcelink"
          }
        },
        "name": "svm1",
        "uuid": "02c9e252-41be-11e9-81d5-00a0986138f7"
      }
    }
  ]
}
Error
Status: Default, Error
| Name | Type | Description | 
|---|---|---|
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 | 
|---|---|---|
next  | 
||
self  | 
_links
| Name | Type | Description | 
|---|---|---|
self  | 
admin_queue
| Name | Type | Description | 
|---|---|---|
depth  | 
integer  | 
The depth of the admin queue for the controller.  | 
host
Properties of the connected host.
| Name | Type | Description | 
|---|---|---|
id  | 
string  | 
The host identifier registered with the controller.  | 
nqn  | 
string  | 
The NVMe qualified name of the host.  | 
transport_address  | 
string  | 
The transport address of the host.  | 
interface
The logical interface through which the host is connected.
| Name | Type | Description | 
|---|---|---|
name  | 
string  | 
The name of the logical interface.  | 
transport_address  | 
string  | 
The transport address of the logical interface.  | 
uuid  | 
string  | 
The unique identifier of the logical interface.  | 
io_queue
Properties of the I/O queues available to the controller.
| Name | Type | Description | 
|---|---|---|
count  | 
integer  | 
The number of I/O queues available to the controller.  | 
depth  | 
array[integer]  | 
The depths of the I/O queues.  | 
node
| Name | Type | Description | 
|---|---|---|
_links  | 
||
name  | 
string  | 
|
uuid  | 
string  | 
subsystem
| Name | Type | Description | 
|---|---|---|
_links  | 
||
name  | 
string  | 
The name of the NVMe subsystem.  | 
uuid  | 
string  | 
The unique identifier of the NVMe subsystem.  | 
svm
| Name | Type | Description | 
|---|---|---|
_links  | 
||
name  | 
string  | 
The name of the SVM.  | 
uuid  | 
string  | 
The unique identifier of the SVM.  | 
nvme_subsystem_controller
A Non-Volatile Memory Express (NVMe) subsystem controller represents a connection between a host and a storage solution.
An NVMe subsystem controller is identified by the NVMe subsystem UUID and the controller ID.
| Name | Type | Description | 
|---|---|---|
_links  | 
||
admin_queue  | 
||
host  | 
Properties of the connected host.  | 
|
id  | 
string  | 
The identifier of the subsystem controller. This field consists of 4 zero-filled hexadecimal digits followed by an 'h'.  | 
interface  | 
The logical interface through which the host is connected.  | 
|
io_queue  | 
Properties of the I/O queues available to the controller.  | 
|
node  | 
||
subsystem  | 
||
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.  |