Hyper-V: Fibre channel support

Hyper-V: Fibre channel support

https://blueprints.launchpad.net/nova/+spec/hyperv-fibre-channel

This blueprint proposes adding Fibre Channel support for the Hyper-V driver.

Problem description

At the moment, the Hyper-V driver supports attaching volumes only via iSCSI or SMB. In many cases, using FC based topologies might be desired.

Use Cases

This blueprint addresses deployers possessing FC based infrastructure.

This will enable attaching volumes exported by Cinder FC based backends using the retrieved target informations such as WWN and LUN.

Proposed change

A new volume driver will be introduced, having a workflow similar to the iSCSI volume driver. This means that the volumes will be attached to the instances as pass-through disks, making this transparent to the guest.

Alternatives

An alternative would be exposing virtual HBAs to guests. Although this has some benefits in terms of performance, it requires the guest to take part in the volume attach proccess.

Also, another limitation is that this scenario would be supported only in case of Windows Server guests.

Data model impact

None

REST API impact

None

Security impact

None

Notifications impact

None

Other end user impact

None

Performance Impact

This will enable using high performance FC based storage.

Other deployer impact

The deployer will be responsible of properly configuring the HBA.

Developer impact

None

Implementation

Assignee(s)

Primary assignee:

plucian

Work Items

  • Implement the Fibre Channel volume driver

Dependencies

None

Testing

This will be tested by the Hyper-V CI.

Documentation Impact

This feature will be documented.

References

None

History

None

Creative Commons Attribution 3.0 License

Except where otherwise noted, this document is licensed under Creative Commons Attribution 3.0 License. See all OpenStack Legal Documents.

nova-specs