f0b8204072
As discussed at our nova meetings, reorganize the juno specs into three directories: - proposed: things proposed which weren't approved - approved: things we approved but didn't implement - implemented: things approved and implemented The first I suspect is the most controversial. I've done this because I worry about the case where a future developer wants to pick up something dropped by a previous developer, but has trouble finding previous proposed specifications on the topic. Note that the actual proposed specs for Juno are adding in a later commit. Change-Id: Idcf55ca37a83d7098dcb7c2971240c4e8fd23dc8
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Hyper-V soft reboot
https://blueprints.launchpad.net/nova/+spec/hyper-v-soft-reboot
This blueprint introduces soft reboot support in the Nova Hyper-V driver.
Problem description
Currently both "nova reboot" and "nova reboot --hard" cause a hard reset on Hyper-V instances. The driver needs to perform a soft reboot in the former case for consistency with the API specifications.
Proposed change
This feature can be implemented by invoking the "InitiateShutdown" method of the "Msvm_ShutdownComponent" class, waiting for the VM to reach a powered off status and powering it on again.
For consistency with the libvirt driver, if a soft reboot fails then a hard reboot is attempted.
Hyper-V provides an API to execute a soft shutdown but not a direct API to execute a soft reboot, hence the need to wait for the shutdown to be completed.
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:
-
alexpilotti
Work Items
- Hyper-V Nova driver feature implementation
- Unit tests
Dependencies
None
Testing
- Unit tests
- Additional Tempest tests can be evaluated
Documentation Impact
None
References
- Initial discussion (Juno design summit): https://etherpad.openstack.org/p/nova-hyperv-juno