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Create an initiator group

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POST /protocols/san/igroups

Introduced In: 9.6

Creates an initiator group.

Required properties

  • svm.uuid or svm.name - Existing SVM in which to create the initiator group.

  • name - Name of the initiator group.

  • os_type - Operating system of the initiator group's initiators.

  • initiators.name - Name(s) of initiator group's initiators. This property can be used to create the initiator group and populate it with initiators in a single request.

Default property values

If not specified in POST, the following default property values are assigned.

  • protocol - mixed - Data protocol of the initiator group's initiators.

  • lun igroup create

Learn more

Parameters

Name Type In Required Description

return_records

boolean

query

False

The default is false. If set to true, the records are returned.

  • Default value:

Request Body

Name Type Description

_links

_links

comment

string

A comment available for use by the administrator. Valid in POST and PATCH.

delete_on_unmap

boolean

An option that causes the initiator group to be deleted when the last LUN map associated with it is deleted. Optional in POST and PATCH. This property defaults to false when the initiator group is created.

igroups

array[igroup_child]

The initiator groups that are members of the group. Optional in POST.

This property is mutually exclusive with the initiators property during POST.

This array contains only the direct children of the initiator group. If the member initiator groups have further nested initiator groups, those are reported in the igroups property of the child initiator group.

Zero or more nested initiator groups can be supplied when the initiator group is created. The initiator group will act as if it contains the aggregatation of all initiators in any nested initiator groups.

After creation, nested initiator groups can be added or removed from the initiator group using the /protocols/san/igroups/{igroup.uuid}/igroups endpoint. See link:post-protocols-san-igroups-igroups(#-san-igroup-nested-create)anddelete-protocols-san-igroups-igroups-.htmlPOST /protocols/san/igroups/{igroup.uuid}/igroups and [DELETE /protocols/san/igroups/{igroup.uuid}/igroups/{uuid}] for more details.

initiators

array[initiators]

The initiators that are members of the group or any group nested below this group. Optional in POST.

This property is mutually exclusive with the igroups property during POST.

During GET, this array contains initiators that are members of this group or any nested initiator groups below this group. When initiators of nested groups are returned, they include links to the initiator group that directly contains the initiator.

Zero or more initiators can be supplied when the initiator group is created. After creation, initiators can be added or removed from the initiator group using the /protocols/san/igroups/{igroup.uuid}/initiators endpoint. See link:post-protocols-san-igroups-initiators(#-san-igroup-initiator-create)anddelete-protocols-san-igroups-initiators-.htmlPOST /protocols/san/igroups/{igroup.uuid}/initiators and [DELETE /protocols/san/igroups/{igroup.uuid}/initiators/{name}] for more details.

lun_maps

array[lun_maps]

All LUN maps with which the initiator is associated.

If the requested igroup is part of a remote, non-local, MetroCluster SVM, the LUN maps are not retrieved.

There is an added cost to retrieving property values for lun_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.

name

string

The name of the initiator group. Required in POST; optional in PATCH.

os_type

string

The host operating system of the initiator group. All initiators in the group should be hosts of the same operating system. Required in POST; optional in PATCH.

parent_igroups

array[]

The initiator groups that contain this initiator group as as member.

portset

portset

The portset to which the initiator group is bound. Binding the initiator group to a portset restricts the initiators of the group to accessing mapped LUNs only through network interfaces in the portset.

Optional in POST and PATCH. PATCH portset.name to an empty string ("") to unbind a portset from the initiator group.

protocol

string

The protocols supported by the initiator group. This restricts the type of initiators that can be added to the initiator group. Optional in POST; if not supplied, this defaults to mixed.

The protocol of an initiator group cannot be changed after creation of the group.

supports_igroups

boolean

An initiator group may contain either initiators or other initiator groups, but not both simultaneously. This property is true when initiator groups can be added to this initiator group. The initiators.name property cannot be used to determine this via a query because it reports initiators inherited from nested igroups.

svm

svm

uuid

string

The unique identifier of the initiator group.
Example request 
{
  "_links": {
    "self": {
      "href": "/api/resourcelink"
    }
  },
  "comment": "string",
  "igroups": [
    {
      "_links": {
        "self": {
          "href": "/api/resourcelink"
        }
      },
      "comment": "string",
      "igroups": null,
      "name": "igroup1",
      "uuid": "4ea7a442-86d1-11e0-ae1c-123478563412"
    }
  ],
  "initiators": [
    {
      "_links": {
        "self": {
          "href": "/api/resourcelink"
        }
      },
      "comment": "string",
      "igroup": {
        "_links": {
          "self": {
            "href": "/api/resourcelink"
          }
        },
        "name": "igroup1",
        "uuid": "4ea7a442-86d1-11e0-ae1c-123478563412"
      },
      "name": "iqn.1998-01.com.corp.iscsi:name1"
    }
  ],
  "lun_maps": [
    {
      "_links": {
        "self": {
          "href": "/api/resourcelink"
        }
      },
      "logical_unit_number": 0,
      "lun": {
        "_links": {
          "self": {
            "href": "/api/resourcelink"
          }
        },
        "name": "lun1",
        "node": {
          "_links": {
            "self": {
              "href": "/api/resourcelink"
            }
          },
          "name": "node1",
          "uuid": "1cd8a442-86d1-11e0-ae1c-123478563412"
        },
        "uuid": "4ea7a442-86d1-11e0-ae1c-123478563412"
      }
    }
  ],
  "name": "igroup1",
  "os_type": "string",
  "parent_igroups": null,
  "portset": {
    "_links": {
      "self": {
        "href": "/api/resourcelink"
      }
    },
    "name": "portset1",
    "uuid": "4ea7a442-86d1-11e0-ae1c-123478563412"
  },
  "protocol": "string",
  "svm": {
    "_links": {
      "self": {
        "href": "/api/resourcelink"
      }
    },
    "name": "svm1",
    "uuid": "02c9e252-41be-11e9-81d5-00a0986138f7"
  },
  "uuid": "4ea7a442-86d1-11e0-ae1c-123478563412"
}

Response

Status: 201, Created
Name Type Description

_links

_links

num_records

integer

Number of records.

records

array[igroup]
Example response 
{
  "_links": {
    "next": {
      "href": "/api/resourcelink"
    },
    "self": {
      "href": "/api/resourcelink"
    }
  },
  "records": [
    {
      "_links": {
        "self": {
          "href": "/api/resourcelink"
        }
      },
      "comment": "string",
      "igroups": [
        {
          "_links": {
            "self": {
              "href": "/api/resourcelink"
            }
          },
          "comment": "string",
          "igroups": null,
          "name": "igroup1",
          "uuid": "4ea7a442-86d1-11e0-ae1c-123478563412"
        }
      ],
      "initiators": [
        {
          "_links": {
            "self": {
              "href": "/api/resourcelink"
            }
          },
          "comment": "string",
          "igroup": {
            "_links": {
              "self": {
                "href": "/api/resourcelink"
              }
            },
            "name": "igroup1",
            "uuid": "4ea7a442-86d1-11e0-ae1c-123478563412"
          },
          "name": "iqn.1998-01.com.corp.iscsi:name1"
        }
      ],
      "lun_maps": [
        {
          "_links": {
            "self": {
              "href": "/api/resourcelink"
            }
          },
          "logical_unit_number": 0,
          "lun": {
            "_links": {
              "self": {
                "href": "/api/resourcelink"
              }
            },
            "name": "lun1",
            "node": {
              "_links": {
                "self": {
                  "href": "/api/resourcelink"
                }
              },
              "name": "node1",
              "uuid": "1cd8a442-86d1-11e0-ae1c-123478563412"
            },
            "uuid": "4ea7a442-86d1-11e0-ae1c-123478563412"
          }
        }
      ],
      "name": "igroup1",
      "os_type": "string",
      "parent_igroups": null,
      "portset": {
        "_links": {
          "self": {
            "href": "/api/resourcelink"
          }
        },
        "name": "portset1",
        "uuid": "4ea7a442-86d1-11e0-ae1c-123478563412"
      },
      "protocol": "string",
      "svm": {
        "_links": {
          "self": {
            "href": "/api/resourcelink"
          }
        },
        "name": "svm1",
        "uuid": "02c9e252-41be-11e9-81d5-00a0986138f7"
      },
      "uuid": "4ea7a442-86d1-11e0-ae1c-123478563412"
    }
  ]
}

Error

Status: Default

ONTAP Error Response Codes

Error Code Description

2621462

The supplied SVM does not exist.

2621706

The specified svm.uuid and svm.name do not refer to the same SVM.

2621707

No SVM was specified. Either svm.name or svm.uuid must be supplied.

5373958

An invalid initiator group name was supplied.

5373966

An initiator group cannot be created in an SVM that is configured for NVMe.

5373969

A supplied initiator name looks like an iSCSI IQN initiator, but the portions after the prefix are missing.

5373971

A supplied initiator name looks like an iSCSI IQN initiator, but the date portion is invalid.

5373972

A supplied initiator name looks like an iSCSI IQN initiator, but the naming authority portion is invalid.

5373977

A supplied initiator name looks like an iSCSI EUI initiator, but the length is invalid.

5373978

A supplied initiator name looks like an iSCSI EUI initiator, but the format is invalid.

5373992

A supplied initiator name was too long to be valid.

5373993

A supplied initiator name did not match any valid format.

5374023

An initiator group with the same name already exists.

5374027

An attempt was made to bind a portset with no member network interfaces to the initiator group.

5374028

An attempt was made to bind a portset with an incompatible protocol to the initiator group.

5374038

An invalid Fibre Channel WWPN was supplied.

5374039

An invalid iSCSI initiator name was supplied.

5374040

Initiators and child initiator groups were both supplied, but only one option is allowed.

5374732

An initiator is already in another initiator group with a conflicting operating system type.

5374735

An attempt was made to add a child igroup that would exceed the maximum allowable depth.

5374737

A supplied child initiator group already exists in another initiator group's hierarchy.

5374739

A supplied child initiator group has an operating system type that differs from the parent initiator group.

5374740

A supplied child initiator group has an protocol that differs from the parent initiator group.

5374741

A supplied child initiator group is already owned by a different child in the initiator group's hierarchy.

5374742

A supplied child initiator group contains an initiator that is already owned by another initiator group in the hierarchy.

5374746

The cluster is currently running in a mixed version and nested initiator groups cannot be created until the effective cluster version reaches 9.9.1.

5374747

The cluster is currently running in a mixed version and initiator group comments cannot be created until the effective cluster version reaches 9.9.1.

5374917

Multiple matching initiators have been supplied with conflicting comments.
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

igroup_child

Name Type Description

_links

_links

comment

string

A comment available for use by the administrator.

igroups

array[]

Further nested initiator groups.

name

string

The name of the initiator group.

uuid

string

The unique identifier of the initiator group.

self

A link to the initiator where mutations can be made. If the initiator is inherited from a nested initiator group, the link refers to the initiator in the nested initiator group. In this case, mutations of the initiator will be applied to all initiator groups referencing the same nested initiator group.

Name Type Description

href

string

_links

Name Type Description

self

self

A link to the initiator where mutations can be made. If the initiator is inherited from a nested initiator group, the link refers to the initiator in the nested initiator group. In this case, mutations of the initiator will be applied to all initiator groups referencing the same nested initiator group.

igroup

The initiator group that directly owns the initiator, which is where modification of the initiator is supported. This property will only be populated when the initiator is a member of a nested initiator group.

Name Type Description

_links

_links

name

string

The name of the initiator group.

uuid

string

The unique identifier of the initiator group.

initiators

Name Type Description

_links

_links

comment

string

A comment available for use by the administrator. Valid in POST and PATCH.

igroup

igroup

The initiator group that directly owns the initiator, which is where modification of the initiator is supported. This property will only be populated when the initiator is a member of a nested initiator group.

name

string

The FC WWPN, iSCSI IQN, or iSCSI EUI that identifies the host initiator. Valid in POST only and not allowed when the records property is used.

An FC WWPN consists of 16 hexadecimal digits grouped as 8 pairs separated by colons. The format for an iSCSI IQN is iqn.yyyy-mm.reverse_domain_name:any. The iSCSI EUI format consists of the eui. prefix followed by 16 hexadecimal characters.

node

Name Type Description

_links

_links

name

string

uuid

string

lun

The LUN to which the initiator group is mapped.

Name Type Description

_links

_links

name

string

The name of the LUN.

node

node

uuid

string

The unique identifier of the LUN.

lun_maps

A LUN map with which the initiator group is associated.

Name Type Description

_links

_links

logical_unit_number

integer

The logical unit number assigned to the LUN for initiators in the initiator group.

lun

lun

The LUN to which the initiator group is mapped.

portset

The portset to which the initiator group is bound. Binding the initiator group to a portset restricts the initiators of the group to accessing mapped LUNs only through network interfaces in the portset.

Optional in POST and PATCH. PATCH portset.name to an empty string ("") to unbind a portset from the initiator group.

Name Type Description

_links

_links

name

string

The name of the portset.

uuid

string

The unique identifier of the portset.

svm

Name Type Description

_links

_links

name

string

The name of the SVM.

uuid

string

The unique identifier of the SVM.

igroup

An initiator group (igroup) is a collection of Fibre Channel (FC) world wide port names (WWPNs), and/or iSCSI Qualified Names (IQNs), and/or iSCSI EUIs (Extended Unique Identifiers) that identify host initiators.

Initiator groups are used to control which hosts can access specific LUNs. To grant access to a LUN from one or more hosts, create an initiator group containing the host initiator names, then create a LUN map that associates the initiator group with the LUN.

An initiator group may contain either initiators or other initiator groups, but not both simultaneously. When a parent initiator group is mapped, it inherits all of the initiators of any initiator groups nested below it. If any nested initiator group is modified to contain different initiators, the parent initiator groups inherit the change. A parent can have many nested initiator groups and an initiator group can be nested under multiple parents. Initiators can only be added or removed from the initiator group that directly contains them. The maximum supported depth of nesting is three layers.

Best practice when using nested initiator groups is to match host hierarchies. A single initiator group should correspond to a single host. If a LUN needs to be mapped to multiple hosts, the initiator groups representing those hosts should be aggregated into a parent initiator group and the LUN should be mapped to that initiator group. For multi-ported hosts, initiators have a comment property where the port corresponding to the initiator can be documented.

An initiator can appear in multiple initiator groups. An initiator group can be mapped to multiple LUNs. A specific initiator can be mapped to a specific LUN only once. With the introduction of nestable initiator groups, best practice is to use the hierarchy such that an initiator is only a direct member of a single initiator group, and that initiator group can then be referenced by other initiator groups.

All initiators or nested initiator groups in an initiator group must be from the same operating system. The initiator group's operating system is specified when the initiator group is created.

When an initiator group is created, the protocol property is used to restrict member initiators to Fibre Channel (fcp), iSCSI (iscsi), or both (mixed). Initiator groups within a nested hierarchy may not have conflicting protocols.

Zero or more initiators or nested initiator groups can be supplied when the initiator group is created. After creation, initiators can be added or removed from the initiator group using the /protocols/san/igroups/{igroup.uuid}/initiators endpoint. Initiator groups containing other initiator groups report the aggregated list of initiators from all nested initiator groups, but modifications of the initiator list must be performed on the initiator group that directly contains the initiators. See link:post-protocols-san-igroups-initiators(#-san-igroup-initiator-create)anddelete-protocols-san-igroups-initiators-.htmlPOST /protocols/san/igroups/{igroup.uuid}/initiators and [DELETE /protocols/san/igroups/{igroup.uuid}/initiators/{name}] for more details.

Name Type Description

_links

_links

comment

string

A comment available for use by the administrator. Valid in POST and PATCH.

delete_on_unmap

boolean

An option that causes the initiator group to be deleted when the last LUN map associated with it is deleted. Optional in POST and PATCH. This property defaults to false when the initiator group is created.

igroups

array[igroup_child]

The initiator groups that are members of the group. Optional in POST.

This property is mutually exclusive with the initiators property during POST.

This array contains only the direct children of the initiator group. If the member initiator groups have further nested initiator groups, those are reported in the igroups property of the child initiator group.

Zero or more nested initiator groups can be supplied when the initiator group is created. The initiator group will act as if it contains the aggregatation of all initiators in any nested initiator groups.

After creation, nested initiator groups can be added or removed from the initiator group using the /protocols/san/igroups/{igroup.uuid}/igroups endpoint. See link:post-protocols-san-igroups-igroups(#-san-igroup-nested-create)anddelete-protocols-san-igroups-igroups-.htmlPOST /protocols/san/igroups/{igroup.uuid}/igroups and [DELETE /protocols/san/igroups/{igroup.uuid}/igroups/{uuid}] for more details.

initiators

array[initiators]

The initiators that are members of the group or any group nested below this group. Optional in POST.

This property is mutually exclusive with the igroups property during POST.

During GET, this array contains initiators that are members of this group or any nested initiator groups below this group. When initiators of nested groups are returned, they include links to the initiator group that directly contains the initiator.

Zero or more initiators can be supplied when the initiator group is created. After creation, initiators can be added or removed from the initiator group using the /protocols/san/igroups/{igroup.uuid}/initiators endpoint. See link:post-protocols-san-igroups-initiators(#-san-igroup-initiator-create)anddelete-protocols-san-igroups-initiators-.htmlPOST /protocols/san/igroups/{igroup.uuid}/initiators and [DELETE /protocols/san/igroups/{igroup.uuid}/initiators/{name}] for more details.

lun_maps

array[lun_maps]

All LUN maps with which the initiator is associated.

If the requested igroup is part of a remote, non-local, MetroCluster SVM, the LUN maps are not retrieved.

There is an added cost to retrieving property values for lun_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.

name

string

The name of the initiator group. Required in POST; optional in PATCH.

os_type

string

The host operating system of the initiator group. All initiators in the group should be hosts of the same operating system. Required in POST; optional in PATCH.

parent_igroups

array[]

The initiator groups that contain this initiator group as as member.

portset

portset

The portset to which the initiator group is bound. Binding the initiator group to a portset restricts the initiators of the group to accessing mapped LUNs only through network interfaces in the portset.

Optional in POST and PATCH. PATCH portset.name to an empty string ("") to unbind a portset from the initiator group.

protocol

string

The protocols supported by the initiator group. This restricts the type of initiators that can be added to the initiator group. Optional in POST; if not supplied, this defaults to mixed.

The protocol of an initiator group cannot be changed after creation of the group.

supports_igroups

boolean

An initiator group may contain either initiators or other initiator groups, but not both simultaneously. This property is true when initiator groups can be added to this initiator group. The initiators.name property cannot be used to determine this via a query because it reports initiators inherited from nested igroups.

svm

svm

uuid

string

The unique identifier of the initiator group.

_links

Name Type Description

next

href

self

href

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.