Module netapp_ontap.resources.consistency_group

Copyright © 2022 NetApp Inc. All rights reserved.

Overview

A consistency group is a group of volumes that supports capabilities such as creating a snapshot of all of its member volumes at the same point-in-time with a write-fence, thus ensuring a consistent image of the volumes at that time.
Applications with datasets scoped to a single volume can have its contents saved to a Snapshot copy, replicated, or cloned in a crash-consistent manner implicitly with corresponding native ONTAP volume-granular operations. Applications with datasets spanning a group of multiple volumes must have such operations performed on the group. Typically, by first fencing writes to all the volumes in the group, flushing any writes pending in queues, executing the intended operation, that is, take Snapshot copy of every volume in the group and when that is complete, unfence and resume writes. A consistency group is the conventional mechanism for providing such group semantics.

Consistency group APIs

The following APIs are used to perform operations related to consistency groups:

  • GET /api/application/consistency-groups
  • POST /api/application/consistency-groups
  • GET /api/application/consistency-groups/{uuid}
  • PATCH /api/application/consistency-groups/{uuid}
  • DELETE /api/application/consistency-groups/{uuid}

Examples

Retrieving all consistency groups of an SVM

from netapp_ontap import HostConnection
from netapp_ontap.resources import ConsistencyGroup

with HostConnection(
    "netapp-cluster.netapp.com", username="admin", password="password", verify=False
):
    print(list(ConsistencyGroup.get_collection(**{"svm.name": "vs1"})))

[
    ConsistencyGroup(
        {
            "uuid": "6f48d798-0a7f-11ec-a449-005056bbcf9f",
            "name": "vol1",
            "_links": {
                "self": {
                    "href": "/api/application/consistency-groups/6f48d798-0a7f-11ec-a449-005056bbcf9f"
                }
            },
        }
    ),
    ConsistencyGroup(
        {
            "uuid": "c1b22c85-0a82-11ec-a449-005056bbcf9f",
            "name": "parent_cg",
            "_links": {
                "self": {
                    "href": "/api/application/consistency-groups/c1b22c85-0a82-11ec-a449-005056bbcf9f"
                }
            },
        }
    ),
    ConsistencyGroup(
        {
            "uuid": "c1b270b1-0a82-11ec-a449-005056bbcf9f",
            "name": "child_1",
            "_links": {
                "self": {
                    "href": "/api/application/consistency-groups/c1b270b1-0a82-11ec-a449-005056bbcf9f"
                }
            },
        }
    ),
    ConsistencyGroup(
        {
            "uuid": "c1b270c3-0a82-11ec-a449-005056bbcf9f",
            "name": "child_2",
            "_links": {
                "self": {
                    "href": "/api/application/consistency-groups/c1b270c3-0a82-11ec-a449-005056bbcf9f"
                }
            },
        }
    ),
]

Retrieving details of all consistency groups of an SVM

Retrieving details of the consistency groups for a specified SVM. These details are considered to be performant and will return within 1 second when 40 records or less are requested.

from netapp_ontap import HostConnection
from netapp_ontap.resources import ConsistencyGroup

with HostConnection(
    "netapp-cluster.netapp.com", username="admin", password="netapp1!", verify=False
):
    print(
        list(
            ConsistencyGroup.get_collection(
                fields="*", max_records=40, **{"svm.name": "vs1"}
            )
        )
    )

[
    ConsistencyGroup(
        {
            "svm": {
                "_links": {
                    "self": {
                        "href": "/api/svm/svms/4853f97a-0a63-11ec-a449-005056bbcf9f"
                    }
                },
                "uuid": "4853f97a-0a63-11ec-a449-005056bbcf9f",
                "name": "vs1",
            },
            "uuid": "6f48d798-0a7f-11ec-a449-005056bbcf9f",
            "replicated": False,
            "space": {"size": 108003328, "available": 107704320, "used": 299008},
            "name": "vol1",
            "_links": {
                "self": {
                    "href": "/api/application/consistency-groups/6f48d798-0a7f-11ec-a449-005056bbcf9f"
                }
            },
        }
    ),
    ConsistencyGroup(
        {
            "svm": {
                "_links": {
                    "self": {
                        "href": "/api/svm/svms/4853f97a-0a63-11ec-a449-005056bbcf9f"
                    }
                },
                "uuid": "4853f97a-0a63-11ec-a449-005056bbcf9f",
                "name": "vs1",
            },
            "uuid": "c1b22c85-0a82-11ec-a449-005056bbcf9f",
            "replicated": False,
            "space": {"size": 83886080, "available": 78696448, "used": 995328},
            "consistency_groups": [
                {
                    "uuid": "c1b270b1-0a82-11ec-a449-005056bbcf9f",
                    "space": {"size": 41943040, "available": 39346176, "used": 499712},
                    "name": "child_1",
                    "_links": {
                        "self": {
                            "href": "/api/application/consistency-groups/c1b270b1-0a82-11ec-a449-005056bbcf9f"
                        }
                    },
                },
                {
                    "uuid": "c1b270c3-0a82-11ec-a449-005056bbcf9f",
                    "space": {"size": 41943040, "available": 39350272, "used": 495616},
                    "name": "child_2",
                    "_links": {
                        "self": {
                            "href": "/api/application/consistency-groups/c1b270c3-0a82-11ec-a449-005056bbcf9f"
                        }
                    },
                },
            ],
            "name": "parent_cg",
            "_links": {
                "self": {
                    "href": "/api/application/consistency-groups/c1b22c85-0a82-11ec-a449-005056bbcf9f"
                }
            },
            "snapshot_policy": {
                "uuid": "a30bd0fe-067d-11ec-a449-005056bbcf9f",
                "name": "default-1weekly",
                "_links": {
                    "self": {
                        "href": "/api/storage/snapshot-policies/a30bd0fe-067d-11ec-a449-005056bbcf9f"
                    }
                },
            },
        }
    ),
    ConsistencyGroup(
        {
            "svm": {
                "_links": {
                    "self": {
                        "href": "/api/svm/svms/4853f97a-0a63-11ec-a449-005056bbcf9f"
                    }
                },
                "uuid": "4853f97a-0a63-11ec-a449-005056bbcf9f",
                "name": "vs1",
            },
            "uuid": "c1b270b1-0a82-11ec-a449-005056bbcf9f",
            "space": {"size": 41943040, "available": 39346176, "used": 499712},
            "parent_consistency_group": {
                "uuid": "c1b22c85-0a82-11ec-a449-005056bbcf9f",
                "name": "parent_cg",
                "_links": {
                    "self": {
                        "href": "/api/application/consistency-groups/c1b22c85-0a82-11ec-a449-005056bbcf9f"
                    }
                },
            },
            "name": "child_1",
            "_links": {
                "self": {
                    "href": "/api/application/consistency-groups/c1b270b1-0a82-11ec-a449-005056bbcf9f"
                }
            },
            "snapshot_policy": {
                "uuid": "a30b60a4-067d-11ec-a449-005056bbcf9f",
                "name": "default",
                "_links": {
                    "self": {
                        "href": "/api/storage/snapshot-policies/a30b60a4-067d-11ec-a449-005056bbcf9f"
                    }
                },
            },
        }
    ),
    ConsistencyGroup(
        {
            "svm": {
                "_links": {
                    "self": {
                        "href": "/api/svm/svms/4853f97a-0a63-11ec-a449-005056bbcf9f"
                    }
                },
                "uuid": "4853f97a-0a63-11ec-a449-005056bbcf9f",
                "name": "vs1",
            },
            "uuid": "c1b270c3-0a82-11ec-a449-005056bbcf9f",
            "space": {"size": 41943040, "available": 39350272, "used": 495616},
            "parent_consistency_group": {
                "uuid": "c1b22c85-0a82-11ec-a449-005056bbcf9f",
                "name": "parent_cg",
                "_links": {
                    "self": {
                        "href": "/api/application/consistency-groups/c1b22c85-0a82-11ec-a449-005056bbcf9f"
                    }
                },
            },
            "name": "child_2",
            "_links": {
                "self": {
                    "href": "/api/application/consistency-groups/c1b270c3-0a82-11ec-a449-005056bbcf9f"
                }
            },
            "snapshot_policy": {
                "uuid": "a30b60a4-067d-11ec-a449-005056bbcf9f",
                "name": "default",
                "_links": {
                    "self": {
                        "href": "/api/storage/snapshot-policies/a30b60a4-067d-11ec-a449-005056bbcf9f"
                    }
                },
            },
        }
    ),
]

Retrieving details of non-nested consistency groups

Retrieves details of the consistency groups without nested consistency groups, or only the parent consistency group for a number of consistency groups of a specified SVM.

from netapp_ontap import HostConnection
from netapp_ontap.resources import ConsistencyGroup

with HostConnection(
    "netapp-cluster.netapp.com", username="admin", password="netapp1!", verify=False
):
    print(
        list(
            ConsistencyGroup.get_collection(
                **{"svm.name": "vs1", "parent_consistency_group.uuid": "null"}
            )
        )
    )

[
    ConsistencyGroup(
        {
            "svm": {"name": "vs1"},
            "uuid": "6f48d798-0a7f-11ec-a449-005056bbcf9f",
            "name": "vol1",
            "_links": {
                "self": {
                    "href": "/api/application/consistency-groups/6f48d798-0a7f-11ec-a449-005056bbcf9f"
                }
            },
        }
    ),
    ConsistencyGroup(
        {
            "svm": {"name": "vs1"},
            "uuid": "c1b22c85-0a82-11ec-a449-005056bbcf9f",
            "name": "parent_cg",
            "_links": {
                "self": {
                    "href": "/api/application/consistency-groups/c1b22c85-0a82-11ec-a449-005056bbcf9f"
                }
            },
        }
    ),
]

Creating a single consistency group with a new SAN volume

Provisions an application with one consistency group, each with one new SAN volumes, with one LUN, an igroup and no explicit Snapshot copy policy, FabricPool tiering policy, storage service, and QoS policy specification. The igroup to map a LUN to is specified at LUN-granularity.

from netapp_ontap import HostConnection
from netapp_ontap.resources import ConsistencyGroup

with HostConnection(
    "netapp-cluster.netapp.com", username="admin", password="netapp1!", verify=False
):
    resource = ConsistencyGroup()
    resource.svm = {"name": "vs1"}
    resource.luns = [
        {
            "name": "/vol/vol1/lun1",
            "space": {"size": "100mb"},
            "os_type": "linux",
            "lun_maps": [
                {
                    "igroup": {
                        "name": "igroup1",
                        "initiators": [
                            {
                                "name": "iqn.2021-07.com.netapp.englab.gdl:scspr2429998001"
                            }
                        ],
                    }
                }
            ],
        }
    ]
    resource.post(hydrate=True)
    print(resource)

ConsistencyGroup(
    {
        "luns": [
            {
                "os_type": "linux",
                "lun_maps": [
                    {
                        "igroup": {
                            "initiators": [
                                {
                                    "name": "iqn.2021-07.com.netapp.englab.gdl:scspr2429998001"
                                }
                            ],
                            "name": "igroup1",
                        }
                    }
                ],
                "space": {"size": 104857600},
                "name": "/vol/vol1/lun1",
            }
        ],
        "svm": {
            "_links": {
                "self": {"href": "/api/svm/svms/4853f97a-0a63-11ec-a449-005056bbcf9f"}
            },
            "uuid": "4853f97a-0a63-11ec-a449-005056bbcf9f",
            "name": "vs1",
        },
        "uuid": "6f48d798-0a7f-11ec-a449-005056bbcf9f",
        "name": "vol1",
    }
)

Creating an Application with two consistency groups with existing SAN volumes

Provisions an application with two consistency groups, each with two existing SAN volumes, a Snapshot copy policy at application-granularity, and a distinct consistency group granular Snapshot copy policy.

from netapp_ontap import HostConnection
from netapp_ontap.resources import ConsistencyGroup

with HostConnection(
    "netapp-cluster.netapp.com", username="admin", password="netapp1!", verify=False
):
    resource = ConsistencyGroup()
    resource.svm = {"name": "vs1"}
    resource.name = "parent_cg"
    resource.snapshot_policy = {"name": "default-1weekly"}
    resource.consistency_groups = [
        {
            "name": "child_1",
            "snapshot_policy": {"name": "default"},
            "volumes": [
                {"name": "existing_vol1", "provisioning_options": {"action": "add"}},
                {"name": "existing_vol2", "provisioning_options": {"action": "add"}},
            ],
        },
        {
            "name": "child_2",
            "snapshot_policy": {"name": "default"},
            "volumes": [
                {"name": "existing_vol3", "provisioning_options": {"action": "add"}},
                {"name": "existing_vol4", "provisioning_options": {"action": "add"}},
            ],
        },
    ]
    resource.post(hydrate=True)
    print(resource)

ConsistencyGroup(
    {
        "svm": {
            "_links": {
                "self": {"href": "/api/svm/svms/4853f97a-0a63-11ec-a449-005056bbcf9f"}
            },
            "uuid": "4853f97a-0a63-11ec-a449-005056bbcf9f",
            "name": "vs1",
        },
        "uuid": "c1b22c85-0a82-11ec-a449-005056bbcf9f",
        "consistency_groups": [
            {
                "uuid": "c1b270b1-0a82-11ec-a449-005056bbcf9f",
                "volumes": [{"name": "existing_vol1"}, {"name": "existing_vol2"}],
                "name": "child_1",
                "snapshot_policy": {"name": "default"},
            },
            {
                "uuid": "c1b270c3-0a82-11ec-a449-005056bbcf9f",
                "volumes": [{"name": "existing_vol3"}, {"name": "existing_vol4"}],
                "name": "child_2",
                "snapshot_policy": {"name": "default"},
            },
        ],
        "name": "parent_cg",
        "snapshot_policy": {"name": "default-1weekly"},
    }
)

Retrieving specific details of an existing consistency group

Retrieves the details of an existing consistency group.

from netapp_ontap import HostConnection
from netapp_ontap.resources import ConsistencyGroup

with HostConnection(
    "netapp-cluster.netapp.com", username="admin", password="netapp1!", verify=False
):
    resource = ConsistencyGroup(uuid="6f48d798-0a7f-11ec-a449-005056bbcf9f")
    resource.get()
    print(resource)

ConsistencyGroup(
    {
        "svm": {
            "_links": {
                "self": {"href": "/api/svm/svms/4853f97a-0a63-11ec-a449-005056bbcf9f"}
            },
            "uuid": "4853f97a-0a63-11ec-a449-005056bbcf9f",
            "name": "vs1",
        },
        "uuid": "6f48d798-0a7f-11ec-a449-005056bbcf9f",
        "replicated": False,
        "space": {"size": 108003328, "available": 107724800, "used": 278528},
        "name": "vol1",
        "_links": {
            "self": {
                "href": "/api/application/consistency-groups/6f48d798-0a7f-11ec-a449-005056bbcf9f"
            }
        },
    }
)

Retrieving all details of an existing consistency group

Retrieves all details of an existing consistency group. These details are not considered to be performant and are not guaranteed to return within one second.

from netapp_ontap import HostConnection
from netapp_ontap.resources import ConsistencyGroup

with HostConnection(
    "netapp-cluster.netapp.com", username="admin", password="netapp1!", verify=False
):
    resource = ConsistencyGroup(uuid="6f48d798-0a7f-11ec-a449-005056bbcf9f")
    resource.get(fields="**")
    print(resource)

ConsistencyGroup(
    {
        "luns": [
            {
                "os_type": "linux",
                "lun_maps": [
                    {
                        "igroup": {
                            "os_type": "linux",
                            "initiators": [
                                {
                                    "name": "iqn.2021-07.com.netapp.englab.gdl:scspr2429998001"
                                }
                            ],
                            "uuid": "6f4a4b86-0a7f-11ec-a449-005056bbcf9f",
                            "protocol": "mixed",
                            "name": "igroup1",
                        },
                        "logical_unit_number": 0,
                    }
                ],
                "uuid": "6f51748a-0a7f-11ec-a449-005056bbcf9f",
                "create_time": "2021-08-31T13:18:24-04:00",
                "space": {"size": 104857600, "used": 0},
                "name": "/vol/vol1/lun1",
                "serial_number": "wIqM6]RfQK3t",
            }
        ],
        "svm": {
            "_links": {
                "self": {"href": "/api/svm/svms/4853f97a-0a63-11ec-a449-005056bbcf9f"}
            },
            "uuid": "4853f97a-0a63-11ec-a449-005056bbcf9f",
            "name": "vs1",
        },
        "uuid": "6f48d798-0a7f-11ec-a449-005056bbcf9f",
        "replicated": False,
        "tiering": {"policy": "none"},
        "space": {"size": 108003328, "available": 107569152, "used": 434176},
        "volumes": [
            {
                "uuid": "6f516c6c-0a7f-11ec-a449-005056bbcf9f",
                "tiering": {"policy": "none"},
                "space": {"size": 108003328, "available": 107569152, "used": 434176},
                "comment": "",
                "qos": {
                    "policy": {
                        "uuid": "b7189398-e572-48ab-8f69-82cd46580812",
                        "name": "extreme-fixed",
                        "_links": {
                            "self": {
                                "href": "/api/storage/qos/policies/b7189398-e572-48ab-8f69-82cd46580812"
                            }
                        },
                    }
                },
                "name": "vol1",
                "snapshot_policy": {
                    "uuid": "a30b60a4-067d-11ec-a449-005056bbcf9f",
                    "name": "default",
                },
            }
        ],
        "qos": {
            "policy": {
                "uuid": "b7189398-e572-48ab-8f69-82cd46580812",
                "name": "extreme-fixed",
                "_links": {
                    "self": {
                        "href": "/api/storage/qos/policies/b7189398-e572-48ab-8f69-82cd46580812"
                    }
                },
            }
        },
        "name": "vol1",
        "_links": {
            "self": {
                "href": "/api/application/consistency-groups/6f48d798-0a7f-11ec-a449-005056bbcf9f?fields=**"
            }
        },
    }
)

Adding LUNs to an existing volume in an existing consistency group

Adds two NVMe namespaces to an existing volume in an existing consistency group, creates a new subsystem, and binds the new namespaces to it.

from netapp_ontap import HostConnection
from netapp_ontap.resources import ConsistencyGroup

with HostConnection(
    "netapp-cluster.netapp.com", username="admin", password="netapp1!", verify=False
):
    resource = ConsistencyGroup(uuid="6f48d798-0a7f-11ec-a449-005056bbcf9f")
    resource.luns = [
        {
            "name": "/vol/vol1/new_luns",
            "provisioning_options": {"count": 2, "action": "create"},
            "space": {"size": "100mb"},
            "os_type": "linux",
            "lun_maps": [
                {
                    "igroup": {
                        "name": "igroup2",
                        "initiators": [{"name": "01:02:03:04:05:06:07:01"}],
                    }
                }
            ],
        }
    ]
    resource.patch()

Restoring a consistency group to the contents of an existing snapshot

Restores an existing consistency group to the contents of an existing snapshot of the consistency group.

from netapp_ontap import HostConnection
from netapp_ontap.resources import ConsistencyGroup

with HostConnection(
    "netapp-cluster.netapp.com", username="admin", password="netapp1!", verify=False
):
    resource = ConsistencyGroup(uuid="6f51748a-0a7f-11ec-a449-005056bbcf9f")
    resource.restore_to = {"snapshot": {"uuid": "92c6c770-17a1-11eb-b141-005056acd498"}}
    resource.patch()

Deleting a consistency group

Deletes a consistency group, where all storage originally associated with that consistency group remains in place.

from netapp_ontap import HostConnection
from netapp_ontap.resources import ConsistencyGroup

with HostConnection(
    "netapp-cluster.netapp.com", username="admin", password="netapp1!", verify=False
):
    resource = ConsistencyGroup(uuid="6f48d798-0a7f-11ec-a449-005056bbcf9f")
    resource.delete()

Classes

class ConsistencyGroup (*args, **kwargs)

Allows interaction with ConsistencyGroup objects on the host

Initialize the instance of the resource.

Any keyword arguments are set on the instance as properties. For example, if the class was named 'MyResource', then this statement would be true:

MyResource(name='foo').name == 'foo'

Args

*args
Each positional argument represents a parent key as used in the URL of the object. That is, each value will be used to fill in a segment of the URL which refers to some parent object. The order of these arguments must match the order they are specified in the URL, from left to right.
**kwargs
each entry will have its key set as an attribute name on the instance and its value will be the value of that attribute.

Ancestors

Static methods

def count_collection(*args, connection: HostConnection = None, **kwargs) -> int

Fetch a count of all objects of this type from the host.

This calls GET on the object to determine the number of records. It is more efficient than calling get_collection() because it will not construct any objects. Query parameters can be passed in as kwargs to determine a count of objects that match some filtered criteria.

Args

*args
Each entry represents a parent key which is used to build the path to the child object. If the URL definition were /api/foos/{foo.name}/bars, then to get the count of bars for a particular foo, the foo.name value should be passed.
connection
The HostConnection object to use for this API call. If unset, tries to use the connection which is set globally for the library or from the current context.
**kwargs
Any key/value pairs passed will be sent as query parameters to the host. These query parameters can affect the count. A return_records query param will be ignored.

Returns

On success, returns an integer count of the objects of this type. On failure, returns -1.

Raises

NetAppRestError: If the API call returned a status code >= 400, or if there is no connection available to use either passed in or on the library.

def delete_collection(*args, records: Iterable[_ForwardRef('ConsistencyGroup')] = None, body: Union[Resource, dict] = None, poll: bool = True, poll_interval: Union[int, NoneType] = None, poll_timeout: Union[int, NoneType] = None, connection: HostConnection = None, **kwargs) -> NetAppResponse

Deletes a consistency group.
Note this will not delete any associated volumes or LUNs. To remove those elements, you can use the appropriate object endpoint.

There are no ONTAP commands for managing consistency groups.

Learn more


Delete all objects in a collection which match the given query.

All records on the host which match the query will be deleted.

Args

*args
Each entry represents a parent key which is used to build the path to the child object. If the URL definition were /api/foos/{foo.name}/bars, then to delete the collection of bars for a particular foo, the foo.name value should be passed.
records
Can be provided in place of a query. If so, this list of objects will be deleted from the host.
body
The body of the delete request. This could be a Resource instance or a dictionary object.
poll
If set to True, the call will not return until the asynchronous job on the host has completed. Has no effect if the host did not return a job response.
poll_interval
If the operation returns a job, this specifies how often to query the job for updates.
poll_timeout
If the operation returns a job, this specifies how long to continue monitoring the job's status for completion.
connection
The HostConnection object to use for this API call. If unset, tries to use the connection which is set globally for the library or from the current context.
**kwargs
Any key/value pairs passed will be sent as query parameters to the host. Only resources matching this query will be deleted.

Returns

A NetAppResponse object containing the details of the HTTP response.

Raises

NetAppRestError: If the API call returned a status code >= 400

def find(*args, connection: HostConnection = None, **kwargs) -> Resource

Retrieve details of a collection or a specific consistency group.

Notes

When volume granular properties, such as, the storage SLC, Fabric Pool tiering are not the same for all the existing volumes of a consistency group, the corresponding property is not reported at consistency group granularity. It is only reported if all the volumes of the consistency group have the same value for that property.
If this consistency group instance is part of a replication relationship, the "replicated" parameter will be true. Otherwise, it is false. Also, the "replicated" parameter will not be present in the output for Nested-consistency groups, it is included only for single and top-level consistency groups. If this consistency group instance is the source of a replication relationship, the "replication_source" parameter will be true. Otherwise, it is false.

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 DOC Requesting specific fields to learn more. * volumes * luns * namespaces

Learn more


Find an instance of an object on the host given a query.

The host will be queried with the provided key/value pairs to find a matching resource. If 0 are found, None will be returned. If more than 1 is found, an error will be raised or returned. If there is exactly 1 matching record, then it will be returned.

Args

*args
Each entry represents a parent key which is used to build the path to the child object. If the URL definition were /api/foos/{foo.name}/bars, then to find a bar for a particular foo, the foo.name value should be passed.
connection
The HostConnection object to use for this API call. If unset, tries to use the connection which is set globally for the library or from the current context.
**kwargs
Any key/value pairs passed will be sent as query parameters to the host.

Returns

A Resource object containing the details of the object or None if no matches were found.

Raises

NetAppRestError: If the API call returned more than 1 matching resource.

def get_collection(*args, connection: HostConnection = None, max_records: int = None, **kwargs) -> Iterable[Resource]

Retrieve details of a collection or a specific consistency group.

Notes

When volume granular properties, such as, the storage SLC, Fabric Pool tiering are not the same for all the existing volumes of a consistency group, the corresponding property is not reported at consistency group granularity. It is only reported if all the volumes of the consistency group have the same value for that property.
If this consistency group instance is part of a replication relationship, the "replicated" parameter will be true. Otherwise, it is false. Also, the "replicated" parameter will not be present in the output for Nested-consistency groups, it is included only for single and top-level consistency groups. If this consistency group instance is the source of a replication relationship, the "replication_source" parameter will be true. Otherwise, it is false.

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 DOC Requesting specific fields to learn more. * volumes * luns * namespaces

Learn more


Fetch a list of all objects of this type from the host.

This is a lazy fetch, making API calls only as necessary when the result of this call is iterated over. For instance, if max_records is set to 5, then iterating over the collection causes an API call to be sent to the server once for every 5 records. If the client stops iterating before getting to the 6th record, then no additional API calls are made.

Args

*args
Each entry represents a parent key which is used to build the path to the child object. If the URL definition were /api/foos/{foo.name}/bars, then to get the collection of bars for a particular foo, the foo.name value should be passed.
connection
The HostConnection object to use for this API call. If unset, tries to use the connection which is set globally for the library or from the current context.
max_records
The maximum number of records to return per call
**kwargs
Any key/value pairs passed will be sent as query parameters to the host.

Returns

A list of Resource objects

Raises

NetAppRestError: If there is no connection available to use either passed in or on the library. This would be not be raised when get_collection() is called, but rather when the result is iterated.

def patch_collection(body: dict, *args, records: Iterable[_ForwardRef('ConsistencyGroup')] = None, poll: bool = True, poll_interval: Union[int, NoneType] = None, poll_timeout: Union[int, NoneType] = None, connection: HostConnection = None, **kwargs) -> NetAppResponse

Updates a consistency group.
Note that this operation will never delete storage elements. You can specify only elements that should be added to the consistency group regardless of existing storage objects.

N/A. There are no ONTAP commands for managing consistency groups.

Examples:

Adding namespaces to an existing volume in an existing consistency group

To add two NVMe Namespaces to an existing volume in an existing consistency group, create a new subsystem and bind the new namespaces to it.

curl -X PATCH -k -u admin:netapp1! 'https://netapp-cluster.netapp.com/api/application/consistency-groups/6f51748a-0a7f-11ec-a449-005056bbcf9f' -d '{ "namespaces": [ { "name": "/vol/vol1/new_namespace", "space": { "size": "10M" }, "os_type": "windows", "provisioning_options": { "count": 2 }, "subsystem_map": { "subsystem": { "name": "mySubsystem", "hosts": [ { "nqn": "nqn.1992-08.com.netapp:sn.d04594ef915b4c73b642169e72e4c0b1:subsystem.host1" }, { "nqn": "nqn.1992-08.com.netapp:sn.d04594ef915b4c73b642169e72e4c0b1:subsystem.host2" } ] } } } ] }'
#### Response:

{ "job": { "uuid": "8c9cabf3-0a88-11ec-a449-005056bbcf9f", "_links": { "self": { "href": "/api/cluster/jobs/8c9cabf3-0a88-11ec-a449-005056bbcf9f" } } } } ```

Learn more


Patch all objects in a collection which match the given query.

All records on the host which match the query will be patched with the provided body.

Args

body
A dictionary of name/value pairs to set on all matching members of the collection. The body argument will be ignored if records is provided.
*args
Each entry represents a parent key which is used to build the path to the child object. If the URL definition were /api/foos/{foo.name}/bars, then to patch the collection of bars for a particular foo, the foo.name value should be passed.
records
Can be provided in place of a query. If so, this list of objects will be patched on the host.
poll
If set to True, the call will not return until the asynchronous job on the host has completed. Has no effect if the host did not return a job response.
poll_interval
If the operation returns a job, this specifies how often to query the job for updates.
poll_timeout
If the operation returns a job, this specifies how long to continue monitoring the job's status for completion.
connection
The HostConnection object to use for this API call. If unset, tries to use the connection which is set globally for the library or from the current context.
**kwargs
Any key/value pairs passed will be sent as query parameters to the host. Only resources matching this query will be patched.

Returns

A NetAppResponse object containing the details of the HTTP response.

Raises

NetAppRestError: If the API call returned a status code >= 400

def post_collection(records: Iterable[_ForwardRef('ConsistencyGroup')], *args, hydrate: bool = False, poll: bool = True, poll_interval: Union[int, NoneType] = None, poll_timeout: Union[int, NoneType] = None, connection: HostConnection = None, **kwargs) -> Union[List[ConsistencyGroup], NetAppResponse]

Creates a consistency group with one or more consistency groups having: * new SAN volumes, * existing SAN, NVMe or NAS FlexVol volumes in a new or existing consistency group

Required properties

  • svm.uuid or svm.name - Existing SVM in which to create the group.
  • volumes, luns or namespaces

Naming Conventions

Consistency groups

  • name or consistency_groups[].name, if specified
  • derived from volumes[0].name, if only one volume is specified, same as volume name

Volume

  • volumes[].name, if specified
  • derived from volume prefix in luns[].name
  • derived from cg[].name, suffixed by "_#" where "#" is a system generated unique number
  • suffixed by "_#" where "#" is a system generated unique number, if provisioning_options.count is provided

LUN

  • luns[].name, if specified
  • derived from volumes[].name, suffixed by "_#" where "#" is a system generated unique number
  • suffixed by "_#" where "#" is a system generated unique number, if provisioning_options.count is provided

NVMe Namespace

  • namespaces[].name, if specified
  • derived from volumes[].name, suffixed by "_#" where "#" is a system generated unique number
  • suffixed by "_#" where "#" is a system generated unique number, if provisioning_options.count is provided

There are no ONTAP commands for managing consistency group.

Learn more


Send this collection of objects to the host as a creation request.

Args

records
A list of Resource objects to send to the server to be created.
*args
Each entry represents a parent key which is used to build the path to the child object. If the URL definition were /api/foos/{foo.name}/bars, then to create a bar for a particular foo, the foo.name value should be passed.
hydrate
If set to True, after the response is received from the call, a a GET call will be made to refresh all fields of each object. When hydrate is set to True, poll must also be set to True.
poll
If set to True, the call will not return until the asynchronous job on the host has completed. Has no effect if the host did not return a job response.
poll_interval
If the operation returns a job, this specifies how often to query the job for updates.
poll_timeout
If the operation returns a job, this specifies how long to continue monitoring the job's status for completion.
connection
The HostConnection object to use for this API call. If unset, tries to use the connection which is set globally for the library or from the current context.
**kwargs
Any key/value pairs passed will be sent as query parameters to the host. Only resources matching this query will be patched.

Returns

A list of Resource objects matching the provided
type which have been created by the host and returned. This is _not_
 
the same list that was provided, so to continue using the object, you
 

should save this list. If poll is set to False, then a NetAppResponse object is returned instead.

Raises

NetAppRestError: If the API call returned a status code >= 400

Methods

def delete(self, body: Union[Resource, dict] = None, poll: bool = True, poll_interval: Union[int, NoneType] = None, poll_timeout: Union[int, NoneType] = None, **kwargs) -> NetAppResponse

Deletes a consistency group.
Note this will not delete any associated volumes or LUNs. To remove those elements, you can use the appropriate object endpoint.

There are no ONTAP commands for managing consistency groups.

Learn more


Send a deletion request to the host for this object.

Args

body
The body of the delete request. This could be a Resource instance or a dictionary object.
poll
If set to True, the call will not return until the asynchronous job on the host has completed. Has no effect if the host did not return a job response.
poll_interval
If the operation returns a job, this specifies how often to query the job for updates.
poll_timeout
If the operation returns a job, this specifies how long to continue monitoring the job's status for completion.
**kwargs
Any key/value pairs passed will be sent as query parameters to the host.

Returns

A NetAppResponse object containing the details of the HTTP response.

Raises

NetAppRestError: If the API call returned a status code >= 400

def get(self, **kwargs) -> NetAppResponse

Retrieves a single consistency group.

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 DOC Requesting specific fields to learn more. * volumes * luns * namespaces

There are no ONTAP commands for managing consistency groups.

Learn more


Fetch the details of the object from the host.

Requires the keys to be set (if any). After returning, new or changed properties from the host will be set on the instance.

Returns

A NetAppResponse object containing the details of the HTTP response.

Raises

NetAppRestError: If the API call returned a status code >= 400

def patch(self, hydrate: bool = False, poll: bool = True, poll_interval: Union[int, NoneType] = None, poll_timeout: Union[int, NoneType] = None, **kwargs) -> NetAppResponse

Updates a consistency group.
Note that this operation will never delete storage elements. You can specify only elements that should be added to the consistency group regardless of existing storage objects.

N/A. There are no ONTAP commands for managing consistency groups.

Examples:

Adding namespaces to an existing volume in an existing consistency group

To add two NVMe Namespaces to an existing volume in an existing consistency group, create a new subsystem and bind the new namespaces to it.

curl -X PATCH -k -u admin:netapp1! 'https://netapp-cluster.netapp.com/api/application/consistency-groups/6f51748a-0a7f-11ec-a449-005056bbcf9f' -d '{ "namespaces": [ { "name": "/vol/vol1/new_namespace", "space": { "size": "10M" }, "os_type": "windows", "provisioning_options": { "count": 2 }, "subsystem_map": { "subsystem": { "name": "mySubsystem", "hosts": [ { "nqn": "nqn.1992-08.com.netapp:sn.d04594ef915b4c73b642169e72e4c0b1:subsystem.host1" }, { "nqn": "nqn.1992-08.com.netapp:sn.d04594ef915b4c73b642169e72e4c0b1:subsystem.host2" } ] } } } ] }'
#### Response:

{ "job": { "uuid": "8c9cabf3-0a88-11ec-a449-005056bbcf9f", "_links": { "self": { "href": "/api/cluster/jobs/8c9cabf3-0a88-11ec-a449-005056bbcf9f" } } } } ```

Learn more


Send the difference in the object's state to the host as a modification request.

Calculates the difference in the object's state since the last time we interacted with the host and sends this in the request body.

Args

hydrate
If set to True, after the response is received from the call, a a GET call will be made to refresh all fields of the object.
poll
If set to True, the call will not return until the asynchronous job on the host has completed. Has no effect if the host did not return a job response.
poll_interval
If the operation returns a job, this specifies how often to query the job for updates.
poll_timeout
If the operation returns a job, this specifies how long to continue monitoring the job's status for completion.
**kwargs
Any key/value pairs passed will normally be sent as query parameters to the host. If any of these pairs are parameters that are sent as formdata then only parameters of that type will be accepted and all others will be discarded.

Returns

A NetAppResponse object containing the details of the HTTP response.

Raises

NetAppRestError: If the API call returned a status code >= 400

def post(self, hydrate: bool = False, poll: bool = True, poll_interval: Union[int, NoneType] = None, poll_timeout: Union[int, NoneType] = None, **kwargs) -> NetAppResponse

Creates a consistency group with one or more consistency groups having: * new SAN volumes, * existing SAN, NVMe or NAS FlexVol volumes in a new or existing consistency group

Required properties

  • svm.uuid or svm.name - Existing SVM in which to create the group.
  • volumes, luns or namespaces

Naming Conventions

Consistency groups

  • name or consistency_groups[].name, if specified
  • derived from volumes[0].name, if only one volume is specified, same as volume name

Volume

  • volumes[].name, if specified
  • derived from volume prefix in luns[].name
  • derived from cg[].name, suffixed by "_#" where "#" is a system generated unique number
  • suffixed by "_#" where "#" is a system generated unique number, if provisioning_options.count is provided

LUN

  • luns[].name, if specified
  • derived from volumes[].name, suffixed by "_#" where "#" is a system generated unique number
  • suffixed by "_#" where "#" is a system generated unique number, if provisioning_options.count is provided

NVMe Namespace

  • namespaces[].name, if specified
  • derived from volumes[].name, suffixed by "_#" where "#" is a system generated unique number
  • suffixed by "_#" where "#" is a system generated unique number, if provisioning_options.count is provided

There are no ONTAP commands for managing consistency group.

Learn more


Send this object to the host as a creation request.

Args

hydrate
If set to True, after the response is received from the call, a a GET call will be made to refresh all fields of the object.
poll
If set to True, the call will not return until the asynchronous job on the host has completed. Has no effect if the host did not return a job response.
poll_interval
If the operation returns a job, this specifies how often to query the job for updates.
poll_timeout
If the operation returns a job, this specifies how long to continue monitoring the job's status for completion.
**kwargs
Any key/value pairs passed will normally be sent as query parameters to the host. If any of these pairs are parameters that are sent as formdata then only parameters of that type will be accepted and all others will be discarded.

Returns

A NetAppResponse object containing the details of the HTTP response.

Raises

NetAppRestError: If the API call returned a status code >= 400

Inherited members

class ConsistencyGroupSchema (*, only: Union[Sequence[str], Set[str]] = None, exclude: Union[Sequence[str], Set[str]] = (), many: bool = False, context: Dict = None, load_only: Union[Sequence[str], Set[str]] = (), dump_only: Union[Sequence[str], Set[str]] = (), partial: Union[bool, Sequence[str], Set[str]] = False, unknown: str = None)

The fields of the ConsistencyGroup object

Ancestors

  • netapp_ontap.resource.ResourceSchema
  • marshmallow.schema.Schema
  • marshmallow.base.SchemaABC

Class variables

consistency_groups GET POST

A consistency group is a mutually exclusive aggregation of volumes or other consistency groups. A consistency group can only be associated with one direct parent consistency group.

The links field of the consistency_group.

luns GET POST PATCH

The LUNs array can be used to create or modify LUNs in a consistency group on a new or existing volume that is a member of the consistency group. LUNs are considered members of a consistency group if they are located on a volume that is a member of the consistency group.

name GET POST

Name of the consistency group. The consistency group name must be unique within an SVM.
If not provided and the consistency group contains only one volume, the name will be generated based on the volume name. If the consistency group contains more than one volume, the name is required.

namespaces PATCH

An NVMe namespace is a collection of addressable logical blocks presented to hosts connected to the SVM using the NVMe over Fabrics protocol. In ONTAP, an NVMe namespace is located within a volume. Optionally, it can be located within a qtree in a volume.
An NVMe namespace is created to a specified size using thin or thick provisioning as determined by the volume on which it is created. NVMe namespaces support being cloned. An NVMe namespace cannot be renamed, resized, or moved to a different volume. NVMe namespaces do not support the assignment of a QoS policy for performance management, but a QoS policy can be assigned to the volume containing the namespace. See the NVMe namespace object model to learn more about each of the properties supported by the NVMe namespace REST API.
An NVMe namespace must be mapped to an NVMe subsystem to grant access to the subsystem's hosts. Hosts can then access the NVMe namespace and perform I/O using the NVMe over Fabrics protocol.

parent_consistency_group GET POST PATCH

The parent_consistency_group field of the consistency_group.

provisioning_options GET POST PATCH

The provisioning_options field of the consistency_group.

qos GET POST PATCH

The qos field of the consistency_group.

replicated GET

Indicates whether or not replication has been enabled on this consistency group.

replication_source GET

Indicates whether or not this consistency group is the source for replication.

restore_to PATCH

The restore_to field of the consistency_group.

snapshot_policy GET POST PATCH

The Snapshot copy policy of the consistency group.
This is the dedicated consistency group Snapshot copy policy, not an aggregation of the volume granular Snapshot copy policy.

space GET POST PATCH

The space field of the consistency_group.

svm GET POST PATCH

The Storage Virtual Machine (SVM) in which the consistency group is located.

tiering GET POST

The tiering field of the consistency_group.

uuid GET

The unique identifier of the consistency group. The UUID is generated by ONTAP when the consistency group is created.

Example: 1cd8a442-86d1-11e0-ae1c-123478563412

volumes GET POST

A consistency group is a mutually exclusive aggregation of volumes or other consistency groups. A volume can only be associated with one direct parent consistency group.
The volumes array can be used to create new volumes in the consistency group, add existing volumes to the consistency group, or modify existing volumes that are already members of the consistency group.
The total number of volumes across all child consistency groups contained in a consistency group is constrained by the same limit.