Overview

Target

• Hyper-V Server 2012
• WMI for VMM control

Strategy

• CloudStack Agent Model
• Business logic in ServerResource accesses WMI

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

Expand networking support

• Flat networking with Security Groups for VM isolation

Volume service

• Volumes management independent of VMs

Expand VM management

• Migration

Shared storage

Native SystemVMs

• Console access
  • RDP sessions to Hyper-V VMs

Architecture

• Reuse KVM-style Agent Container
  • Java-based agent executes on hypervisor
  • Call out to WMI
• Use existing SystemVMs
• 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

Design changes

Adopt Javelin Storage model

• Avoid NFS requirements

Agent model

• Cloudstack agent model.
• C# based agent which makes WMI calls for operations on the hypervisor.
• Agent accepts json requests and does the necessary operations on the hypervisor.

V2 WMI API

• 2012 R2 supports only root/virtualization/v2 namespace. WMI calls on the agent will use the same namespace.

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

Test Plan

• Hyper-V 2012 (3.0) Support - Phase 1

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

Scope

• Pure hyperv zone will be supported. No mixed zone.
• Support for SMB/CIFS as primary and secondary.
• VM Compute
  • Start, stop, reboot, destroy
  • Migrate - Live
  • Service offerings. Scale up is allowed on stopped VM.
  • Console access
  • SSH keys, user data.
  • Create VM from template
  • Create VM from iso
  • Attach, Detach ISO
  • User provided internal name
• Storage
  • Primary storage
    • Shared Storage (SMB)
    • Local Storage
  • Root & data volumes – local and shared storage
  • Add, delete, attach & detach volumes
  • Secondary storage (SMB). Single secondary storage per zone.
• Network
  • VLANs (isolated, shared, mgmt.)
  • External device support? NS, F5, SRX, Juniper – both isolated and shared n/w
  • All VR services supported: DNS, DHCP, LB, PF, StaticNAT, SourceNAT, NetworkACL, UserData, VPN
  • Dedicate IP range, Public VLANs (to account)
  • Restart (destroy/recreate) routers, system VMs, restart n/w – all cases
  • Different n/w configurations:
    • Storage in one NIC, Management in another, guest in another etc
    • Management and guest in one, storage in another
    • All in one network
  • L4-L7 services in shared n/w
  • Multiple IP range (restarts and DNS should pick up the specified ranges…)
  • Persistent network
• Host tags
• Storage tags
  
  

Background

Original Feature Spec