6ee1699770
Allow provisioning instances on VVol datastores blueprint vmware-vvol-support Change-Id: I184b346e1b6e7c4abc0b1f58b2600bd21da36bcc
2.9 KiB
Support for Virtual Volumes
https://blueprints.launchpad.net/nova/+spec/vmware-vvol-support
Virtual Volumes is an integration and management framework delivering a new operational model for external storage (SAN/NAS). It is comprised of a control plane using SPBM, and a data plane using VASA APIs for external storage and vSphere APIs for IO Filtering for in-hypervisor software data services.
A storage container is a logical abstraction on to which Virtual Volumes are mapped and stored. Storage containers are setup at the array level and associated with array capabilities. vSphere will map storage containers to VVol Datastores and provide applicable datastore level functionality.
Currently the VMware driver in Nova supports VMFS, NFS and vSAN datastores. This is a proposal for adding support for VVol Datastores.
Problem description
The VMware driver cannot provision instances on VVol Datastores.
Use Cases
As an End User I want to provision instances on VVol Datastores when using the VMware driver in Nova.
Proposed change
Adding support for VVol Datastores would be pretty straightforward -- we just need to whitelist datastores with type "VVOL" when choosing a datastore for the instance. There is also an additional restriction that the virtual disk size of the image that is provisioned should be an even multiple of 1MB.
Alternatives
None
Data model impact
None
REST API impact
None
Security impact
None
Notifications impact
None
Other end user impact
None
Performance Impact
None
Other deployer impact
None
Developer impact
None
Implementation
Assignee(s)
- Primary assignee:
-
rgerganov
Work Items
It will be implemented in a single patch that whitelists the VVol type and does the required checks for the virtual disk size.
Dependencies
Virtual Volumes are introduced in vSphere 6.0. However, we don't need any checks for the VC version in the code but simply whitelist the VVol type.
Testing
There will be a separate CI job that will run tempest with VVol datastores
Documentation Impact
None
References
[1] https://www.vmware.com/files/pdf/products/virtualvolumes/VMware_Virtual_Volumes_FAQ.pdf