Spec: Adding more protection parameters retention period
Change-Id: I7a6937bff69ff359ca0bb73eb30cbda7866fa161 Implements: blueprint adding-more-protection-parameters-retention-period
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This work is licensed under a Creative Commons Attribution 3.0 Unported
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License.
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http://creativecommons.org/licenses/by/3.0/legalcode
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==================================================
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Adding more protection parameters:retention period
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==================================================
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https://blueprints.launchpad.net/karbor/+spec/adding-more-protection-parameters-retention-period
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Problem description
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===================
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Karbor supports the scheduled operation according the protection plan. As time
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goes on, checkpoints are getting more and more. For example, if we create a
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scheduled plan: protect resource every day, there are 7 checkpoints one week,
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and about 30 checkpoints one month, etc. If we don't clean them manually, a
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lot of checkpoint takes up our valuable storage resources.
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In this specification we will introduce protection parameters:retention
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period, max backup number. If the create time of the checkpoint is older
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than retention period, we need to delete it, and if the checkpoints
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number is more than max backup number, we need to delete the oldest one.
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Use Cases
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=========
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Users create a scheduledoperation, in addition to setting the scheduling
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period and plan, he can also set the retention period or (and) checkpoint
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maximum number.
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Proposed change
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===============
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Adding more protection parameters:retention period:
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---------------------------------------------------
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Add protection parameters in scheduledoperation: max_backups and
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retention_duration. These parameters are used to control the number
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of checkpoints to prevent excessive storage of resources due to
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excessive checkpoints.
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1. Delete checkpoints in the auto-scheduled mode:
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Get max_backups and retention_duration from the scheduledoperation.
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When creating the checkpoint is complete, get all the available checkpoints in the plan
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and sort them according to created_at by desc, delete the older checkpoints
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that exceeds the max_backups; and delete the checkpoints that their created_at
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are older than the retention_duration.
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protection parameters:retention schema:
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---------------------------------------
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::
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karbor scheduledoperation-create 'OS volumes retention protection' retention_protect 95e45924-49f4-4c12-b06f-5ec3c6245435
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"plan_id"="49dd4b84-a8f9-4592-b7d4-be1e37175af6","provider_id"="cf56bd3e-97a7-4078-b6d5-f36246333fd9","max_backups"=3,"retention_duration"=10
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+----------------------+-----------------------------------------------------------+
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| Property | Value |
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+----------------------+-----------------------------------------------------------+
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| description | None |
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| enabled | True |
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| id | 2c39406d-209b-4cba-88b4-2d9c0826eb39 |
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| name | OS volumes retention protection |
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| operation_definition | { |
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| | "max_backups": "3", |
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| | "plan_id": "49dd4b84-a8f9-4592-b7d4-be1e37175af6", |
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| | "provider_id": "cf56bd3e-97a7-4078-b6d5-f36246333fd9", |
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| | "retention_duration": "10" |
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| | } |
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| operation_type | retention_protect |
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| trigger_id | 95e45924-49f4-4c12-b06f-5ec3c6245435 |
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+----------------------+-----------------------------------------------------------+
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Note 1: max_backups:
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For example, "max_backups=3" indicates maximum retention for 3 backups.
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For example, "max_backups=10" indicates maximum retention for 10 backups.
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Note 2: retention_duration's unit is day.
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For example, "retention_duration=10" indicates maximum retention for 10 days.
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For example, "retention_duration=14" indicates maximum retention for 2 weeks.
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Alternatives
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------------
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None
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Data model impact
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-----------------
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None
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REST API impact
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---------------
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None
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Security impact
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---------------
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None
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Notifications impact
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--------------------
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None
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Other end user impact
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---------------------
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None
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Performance Impact
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------------------
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None
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Other deployer impact
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---------------------
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None
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Developer impact
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----------------
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None
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Implementation
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==============
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Assignee(s)
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-----------
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Primary assignee:
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gengchc2 <geng.changcai2@zte.com.cn>
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Work Items
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----------
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*
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* Delete checkpoint in the auto-scheduled mode: older checkpoints based on max_backups
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and retention_duration in the protection plan.
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* Write tests
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Dependencies
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============
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None
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Testing
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=======
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Unit tests in Karbor.
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Documentation Impact
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====================
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None
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References
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==========
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None
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@ -37,6 +37,7 @@ Approved Specs
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volume-glance-protection-plugin
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checkpoint-tenant-isolation
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service-management-api
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adding-more-protection-parameters-retention-period
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Spec Template
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-------------
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