Overview

Target

• Hyper-V Server 2012
• WMI for VMM control

Strategy

• CloudStack Agent Model
• Business logic in ServerResource accesses WMI

Phase 1

Support basic commands

• VM lifecycle
  • Local disk creation from template
  • VM creation, start/stop, and destruction
• VMM monitoring
  • Host, VM and storage stats returned to CloudStack Server

VM network isolation using VLANs

Basic template management

Phase 2

Expand networking support

• Flat networking with Security Groups for VM isolation

Volume service

• Volumes management independent of VMs

Expand VM management

• Migration
• Snapshots

Shared storage

Native SystemVMs

• Console access
  • RDP sessions to Hyper-V VMs

Progress

GitHub repository https://github.com/lafferty/cshv3

• Plugin is cloud-plugin-hypervisor-hyperv, under ./plugins/hypervisor/hyperv
• Minor changes to UI required for template creation

Architecture

• Reuse KVM-style Agent Container
  • Java-based agent executes on hypervisor
  • Call out to WMI via Hyper-V scripts
• Use existing SystemVMs
  • Include XenServer cluster to run SSVM and Virtual Router
• Local Primary Storage
  • Local folder
• Secondary storage accessed as NFS/SMB via Windows Server 2012
  • Free license Hyper-V Server 2012 has no NFS client
  • Admin manually mounts secondary storage to appear as local folder
• Executes in Cygwin

Design changes

Near

Adopt Javelin Storage model

• Avoid NFS requirements

Far

V2 WMI API

• Currently mix of v1 and v2

Access WMI from Java

• Remove use of scripts
• Remove agent from Hyper-V server

Misc Design Notes

Local Storage

• UUIDs for volumes correspond to their file names on disk. Only this UUID is persisted on the Hyper-V Server

Misc QA Notes

Unit tests

• Each test corresponds to one or more Command objects sent to a ServerResource
• No unit tests for server-side objects (Discoverer or HypervisorGuru)
• Tests written to work only on Hyper-V 2012

Background

Original Feature Spec