Add pooled resources management
This spec proposes changes to the the functionality of managing pooled resources through valence. Change-Id: I2f76ec332dba5fbcfc658a4f94e34aa945404e44
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Anusha Ramineni
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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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Pooled resources management
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===========================
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This blueprint is to add framework in valence for pooled resources management.
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https://blueprints.launchpad.net/openstack-valence/+spec/add-device-orchestration
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Problem description
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===================
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Currently, valence doesn't provide support for the dynamic management of
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pooled resources like storage, network and other pci devices which can be
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connected on demand to a composed node, giving user the ability to attach or
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detach the devices dynamically based on workload.
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Proposed change
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===============
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* Creating podmanager functionality will be updated to add a new async
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operation to perform sync of all the pooled resources associated with that
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specific podmanager.
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* All the discovered devices would be automatically registered to DB.
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* New DB table 'devices' to be created to store the minimal device info and
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new uuid will be generated for their unique identification in valence.
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* Further operations on the devices can be performed through valence using
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uuid.
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* Periodic task would be added to keep the devices info and their status in
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sync with valence DB. And also, 'refresh' command also to be provided for the
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user to perform any immediate sync as required.
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* API's to be provided to list the pooled devices, attach/detach device to node
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using uuid
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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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New table 'devices' will be added with following schema:
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+-------------------+
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| Field |
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+===================+
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| uuid |
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+-------------------+
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| podm_id |
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+-------------------+
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| node_id |
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+-------------------+
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| type |
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+-------------------+
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| properties |
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+-------------------+
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| pooled_group_id |
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+-------------------+
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| state |
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+-------------------+
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| extra |
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+-------------------+
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| created_at |
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+-------------------+
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| deleted_at |
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+-------------------+
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REST API impact
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---------------
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New API's to be added list pooled resources and attach/detach devices
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.. code:: rest
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GET v1/pooled API to be added with filter params to list specific devices
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GET v1/pooled?type=storage
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POST /v1/nodes/{node_ident}/action
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{
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"attach":{
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device_id: 'a698b7c2-0ca1-481a-87cd-4717a3d9c4d6'
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}
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}
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POST /v1/nodes/{node_ident}/action
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{
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"detach":{
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"device_id": "a698b7c2-0ca1-481a-87cd-4717a3d9c4d6"
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}
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}
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References::
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https://github.com/openstack/valence/blob/master/api-ref/source/valence-api-v1-pooled.inc
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https://github.com/openstack/valence/blob/master/api-ref/source/mockup/node-post-action-attach-request.json
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Driver API impact
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-----------------
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None
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Nova driver 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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Other end user impact
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---------------------
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None
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Scalability 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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Valence GUI / Horizon 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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ramineni
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ntpttr
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Work Items
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----------
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* Add API's for pooled resources, attach/detach devices
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* Add periodic task
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* Add new DB model
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* Redfish implementation
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* CLI implementation
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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 should be added.
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Documentation Impact
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====================
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* update documentation on new supported API's
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References
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==========
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* https://github.com/openstack/valence/blob/master/api-ref/source/valence-api-v1-pooled.inc
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* https://github.com/openstack/valence/blob/master/api-ref/source/mockup/node-post-action-attach-request.json
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