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Update the SnapMirror policy

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PATCH /snapmirror/policies/{uuid}

Introduced In: 9.6

Updates the SnapMirror policy.

Important notes

  • The properties "retention.label" and "retention.count" are mandatory if "retention" is provided in the input. The provided "retention.label" is the final list and it replaces the existing values.

  • The value of the "identity_preservation" property cannot be changed if the SnapMirror relationships associated with the policy have different identity_preservation configurations.

  • If the SnapMirror policy "identity_preservation" value matches the "identity_preservation" value of the associated SnapMirror relationships, then the "identity_preservation" value can be changed from a higher "identity_preservation" threshold value to a lower "identity_preservation" threshold value but not vice-versa. For example, the threshold value of the "identity_preservation" property can be changed from "full" to "exclude_network_config", but cannot be increased from "exclude_network_and_protocol_config" to "exclude_network_config" to "full". The threshold value of the "identity_preservation" cannot be changed to "exclude_network_and_protocol_config" for IDP SVMDR.

  • The policy properties "copy_all_source_snapshots", "copy_latest_source_snapshot", and "create_snapshot_on_source" cannot be modified.

  • No "retention" properties can be modified if the "copy_all_source_snapshots" or "copy_latest_source_snapshot" property is present in the policy.

  • Replacing or deleting all retention rules of a policy that has the "create_snapshot_on_source" property set to false in a single API call is not supported.

  • Modifying the property "retention.label" for all retention rules of a policy that has the "create_snapshot_on_source" property set to false in a single API call is not supported.

  • To remove a transfer_schedule on a SnapMirror policy set the "transfer_schedule" to null (no-quotes) during SnapMirror policy PATCH.

  • snapmirror policy modify

Example

Updating the "retention" property to add rules to a policy without any rules.

 PATCH "/api/snapmirror/policies/fe65686d-00dc-11e9-b5fb-0050568e3f83" '{"retention": [{"label": "newlabel", "count": 2}, {"label": "weekly", "count": 2, "creation_schedule": {"name": "weekly"}}, {"label": "daily", "count": 14}]}'

Updating the "retention" property to add rules to a policy with existing rules {"retention": [{"label": "oldLabel1", "count": 2}, {"label": "oldLabel2", "count": 5}]

 PATCH "/api/snapmirror/policies/fe65686d-00dc-11e9-b5fb-0050568e3f83" '{"retention": [{"label": "oldLabel1", "count": 2}, {"label": "oldLabel2", "count": 5}, {"label": "newlabel", "count": 3}, {"label": "weekly", "count": 1}]}'

Updating the "retention" property to remove a rule (oldLabel1) and add new rule to a policy with existing rules {"retention": [{"label": "oldLabel1", "count": 2}, {"label": "oldLabel2", "count": 3}]

 PATCH "/api/snapmirror/policies/fe65686d-00dc-11e9-b5fb-0050568e3f83" '{"retention": [{"label": "oldLabel2", "count": 3}, {"label": "newlabel", "count": 2}]}'

Updating "transfer_schedule", "throttle", and "identity_preservation" properties

 PATCH "/api/snapmirror/policies/8aef950b-3bef-11e9-80ac-0050568ea591" '{"transfer_schedule.name" : "weekly", "throttle" : "100", "identity_preservation":"exclude_network_and_protocol_config"}'

Removing the SnapMirror transfer_schedule for a SnapMirror policy. Transfer_schedule can be specified as UUID or name or both with the value set to null (no-quotes).

 PATCH "/api/snapmirror/policies/98bb2608-fc60-11e8-aa13-005056a707ff/" '{"transfer_schedule":{"uuid":null, "name":null}}'

Updating the "retention" property to have rentention.preserve and retention.warn for existing rule.

 PATCH "/api/snapmirror/policies/fe65686d-00dc-11e9-b5fb-0050568e3f83" '{"retention": [{"label": "oldLabel1", "count": 3, "preserve": true, "warn": 2}]}'

Learn more

Parameters

Name Type In Required Description

uuid

string

path

True

SnapMirror policy UUID

return_timeout

integer

query

False

The number of seconds to allow the call to execute before returning. When doing a POST, PATCH, or DELETE operation on a single record, the default is 0 seconds. This means that if an asynchronous operation is started, the server immediately returns HTTP code 202 (Accepted) along with a link to the job. If a non-zero value is specified for POST, PATCH, or DELETE operations, ONTAP waits that length of time to see if the job completes so it can return something other than 202.

  • Default value: 1

  • Max value: 120

  • Min value: 0

Request Body

Name Type Description

_links

_links

comment

string

Comment associated with the policy.

copy_all_source_snapshots

boolean

Specifies that all the source Snapshot copies (including the one created by SnapMirror before the transfer begins) should be copied to the destination on a transfer. "Retention" properties cannot be specified along with this property. This is applicable only to async policies. Property can only be set to 'true'.

copy_latest_source_snapshot

boolean

Specifies that the latest source Snapshot copy (created by SnapMirror before the transfer begins) should be copied to the destination on a transfer. "Retention" properties cannot be specified along with this property. This is applicable only to async policies. Property can only be set to 'true'.

create_snapshot_on_source

boolean

Specifies whether a new Snapshot copy should be created on the source at the beginning of an update or resync operation. This is applicable only to async policies. Property can only be set to 'false'.

identity_preservation

string

Specifies which configuration of the source SVM is replicated to the destination SVM. This property is applicable only for SVM data protection with "async" policy type.

name

string

Name of the policy.

network_compression_enabled

boolean

Specifies whether network compression is enabled for transfers. This is applicable only to the policies of type "async".

retention

array[snapmirror_policy_rule]

Rules for Snapshot copy retention.

rpo

integer

Specifies the duration of time for which a change to be propagated to a mirror should be delayed, in seconds. This is an intentional propagation delay between mirrors and is configurable down to zero, which means an immediate propagation. This is supported for policies of type 'continuous'.

scope

string

Set to "svm" for policies owned by an SVM, otherwise set to "cluster".

svm

svm

SVM, applies only to SVM-scoped objects.

sync_common_snapshot_schedule

sync_common_snapshot_schedule

Schedule used to create common Snapshot copies for synchronous relationships.

sync_type

string

throttle

integer

Throttle in KB/s. Default to unlimited.

transfer_schedule

transfer_schedule

The schedule used to update asynchronous relationships. Only cron schedules are supported for SnapMirror.

type

string

uuid

string

Unique identifier of the SnapMirror policy.
Example request 
{
  "_links": {
    "self": {
      "href": "/api/resourcelink"
    }
  },
  "comment": "string",
  "copy_all_source_snapshots": 1,
  "copy_latest_source_snapshot": 1,
  "create_snapshot_on_source": "",
  "identity_preservation": "string",
  "name": "Asynchronous",
  "retention": [
    {
      "count": 7,
      "creation_schedule": {
        "_links": {
          "self": {
            "href": "/api/resourcelink"
          }
        },
        "name": "weekly",
        "uuid": "1cd8a442-86d1-11e0-ae1c-123478563412"
      },
      "label": "hourly",
      "period": "P30D",
      "prefix": "string",
      "preserve": 1,
      "warn": 4
    }
  ],
  "rpo": 0,
  "scope": "string",
  "svm": {
    "_links": {
      "self": {
        "href": "/api/resourcelink"
      }
    },
    "name": "svm1",
    "uuid": "02c9e252-41be-11e9-81d5-00a0986138f7"
  },
  "sync_common_snapshot_schedule": {
    "_links": {
      "self": {
        "href": "/api/resourcelink"
      }
    },
    "name": "weekly",
    "uuid": "1cd8a442-86d1-11e0-ae1c-123478563412"
  },
  "sync_type": "string",
  "throttle": 0,
  "transfer_schedule": {
    "_links": {
      "self": {
        "href": "/api/resourcelink"
      }
    },
    "name": "weekly",
    "uuid": "1cd8a442-86d1-11e0-ae1c-123478563412"
  },
  "type": "string",
  "uuid": "4ea7a442-86d1-11e0-ae1c-123478563412"
}

Response

Status: 200, Ok
Name Type Description

job

job_link
Example response 
{
  "job": {
    "_links": {
      "self": {
        "href": "/api/resourcelink"
      }
    },
    "uuid": "string"
  }
}

Response

Status: 202, Accepted

Error

Status: Default

ONTAP Error Response codes

Error code
 Description

---------

----------

6619714

Schedule specified is an interval schedule. SnapMirror does not support interval schedules.

13303842

SnapMirror policy is not supported.

13303843

Conflicting values between SnapMirror policy and SnapMirror relationships for either 'transfer_schedule, throttle or identity_preservation' properties

13303850

Invalid input parameter

13303887

Failed to create SnapMirror policy. Reason: Maximum number of allowed retention rules reached

13304050

Retention cannot be empty for a SnapMirror policy with 'create_snapshot_on_source' set to false.

13304092

Input value of the retention period property is invalid. For relationships with FlexVol volume or FlexGroup volume destinations, the duration must be in ISO 6801 format or can be infinite. For relationships with object store destinations, only duration values with Y, M or D and supported and must be in the specified range.

6621045

The property rentention.warn is not supported for a policy when the retention.preserve property is false.

13304129

The property retention.warn value must be less than the property retention.count value for a rule in a policy.

13304126

Enter a value for "count" in the range indicated in the error message.

13304130

The total retention.count value for all rules in a policy cannot exceed the value indicated in the error message."
Name Type Description

error

returned_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

creation_schedule

Schedule used to create Snapshot copies on the destination for long term retention. Only cron schedules are supported for SnapMirror.

Name Type Description

_links

_links

name

string

Job schedule name

uuid

string

Job schedule UUID

snapmirror_policy_rule

SnapMirror policy rule for retention.

Name Type Description

count

integer

Number of Snapshot copies to be kept for retention. Maximum value will differ based on type of relationship and scaling factor.

creation_schedule

creation_schedule

Schedule used to create Snapshot copies on the destination for long term retention. Only cron schedules are supported for SnapMirror.

label

string

Snapshot copy label

period

string

Specifies the duration for which the Snapshot copies are locked. The retention period value represents a duration and must be in the ISO-8601 duration format. Years, months, days, hours, minutes, and seconds are represented as "PY","PM","PD","PTH","PTM" and "PTS". Value "infinite" is also a valid input for Flexvol volumes and FlexGroup volumes. A duration which combines different periods is not supported, for example "P1Y10M" is not supported. The range of supported retention period values is between 1 second to infinite.

prefix

string

Specifies the prefix for the Snapshot copy name to be created as per the schedule. If no value is specified, then the label is used as the prefix.

preserve

boolean

Specifies the behavior when the Snapshot copy retention count is reached on the SnapMirror destination for the rule. The default value is false, which means that the oldest Snapshot copy is deleted to make room for new ones but only if the number of Snapshot copies has exceeded the retention count specified in the 'count' property. When set to true and where the Snapshot copies have reached the retention count, an incremental SnapMirror transfer will fail or if the rule has a schedule, Snapshot copies will be no longer be created on the SnapMirror destination.

warn

integer

Specifies the warning threshold count for the rule. The default value is zero. When set to a value greater than zero, an event is generated after the number of Snapshot copies (for the particular rule) retained on a SnapMirror destination reaches the specified warning limit. The preserve property for the rule must be true in order to set the warn property to a value greater than zero.

svm

SVM, applies only to SVM-scoped objects.

Name Type Description

_links

_links

name

string

The name of the SVM. This field cannot be specified in a PATCH method.

uuid

string

The unique identifier of the SVM. This field cannot be specified in a PATCH method.

sync_common_snapshot_schedule

Schedule used to create common Snapshot copies for synchronous relationships.

Name Type Description

_links

_links

name

string

Job schedule name

uuid

string

Job schedule UUID

transfer_schedule

The schedule used to update asynchronous relationships. Only cron schedules are supported for SnapMirror.

Name Type Description

_links

_links

name

string

Job schedule name

uuid

string

Job schedule UUID

snapmirror_policy

SnapMirror policy information. SnapMirror policy can either be of type "async", "sync" or "continuous". The policy type "async" can be associated with a SnapMirror relationship that has either a FlexVol volume, FlexGroup volume or SVM as the endpoint. The policy type "sync" along with "sync_type" as "sync" or "strict_sync" can be associated with a SnapMirror relationship that has a FlexVol volume as the endpoint. The policy type "sync" can have a "sync_type" of either "sync", "strict_sync", "automated_failover" or "automated_failover_duplex". If the "sync_type" is "sync", a write success is returned to the client after writing the data to the source endpoint and before writing the data to the destination endpoint. If the "sync_type" is "strict_sync", a write success is returned to the client after writing the data to both source and destination endpoints. If the "sync_type" is "automated_failover", the policy can be associated with a SnapMirror relationship that has a consistency group as the endpoint and provides asymmetric active active access to the two storage copies. If the "sync_type" is "automated_failover_duplex", the policy can be associated with a SnapMirror relationship that has a consistency group as the endpoint and provides symmetric active active access to the two storage copies. Use the "sync" policy with "sync_type" as "automated_failover" or "automated_failover_duplex" to establish SnapMirror relationships for business continuity use cases. SnapMirror relationships with policy types as "sync" and "sync_type" as "automated_failover" or "automated_failover_duplex" can be monitored by the Mediator, if configured. If the source Consistency Group endpoint is not reachable, the Mediator might trigger a failover to the destination consistency group endpoint. A policy type of "continuous" can be associated with SnapMirror relationships that have either ONTAP S3 buckets or non-ONTAP object stores as endpoints. This type of policy is used for FabricLink owned targets.

Name Type Description

_links

_links

comment

string

Comment associated with the policy.

copy_all_source_snapshots

boolean

Specifies that all the source Snapshot copies (including the one created by SnapMirror before the transfer begins) should be copied to the destination on a transfer. "Retention" properties cannot be specified along with this property. This is applicable only to async policies. Property can only be set to 'true'.

copy_latest_source_snapshot

boolean

Specifies that the latest source Snapshot copy (created by SnapMirror before the transfer begins) should be copied to the destination on a transfer. "Retention" properties cannot be specified along with this property. This is applicable only to async policies. Property can only be set to 'true'.

create_snapshot_on_source

boolean

Specifies whether a new Snapshot copy should be created on the source at the beginning of an update or resync operation. This is applicable only to async policies. Property can only be set to 'false'.

identity_preservation

string

Specifies which configuration of the source SVM is replicated to the destination SVM. This property is applicable only for SVM data protection with "async" policy type.

name

string

Name of the policy.

network_compression_enabled

boolean

Specifies whether network compression is enabled for transfers. This is applicable only to the policies of type "async".

retention

array[snapmirror_policy_rule]

Rules for Snapshot copy retention.

rpo

integer

Specifies the duration of time for which a change to be propagated to a mirror should be delayed, in seconds. This is an intentional propagation delay between mirrors and is configurable down to zero, which means an immediate propagation. This is supported for policies of type 'continuous'.

scope

string

Set to "svm" for policies owned by an SVM, otherwise set to "cluster".

svm

svm

SVM, applies only to SVM-scoped objects.

sync_common_snapshot_schedule

sync_common_snapshot_schedule

Schedule used to create common Snapshot copies for synchronous relationships.

sync_type

string

throttle

integer

Throttle in KB/s. Default to unlimited.

transfer_schedule

transfer_schedule

The schedule used to update asynchronous relationships. Only cron schedules are supported for SnapMirror.

type

string

uuid

string

Unique identifier of the SnapMirror policy.
Name Type Description

_links

_links

uuid

string

The UUID of the asynchronous job that is triggered by a POST, PATCH, or DELETE operation.

error_arguments

Name Type Description

code

string

Argument code

message

string

Message argument

returned_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.