Taylor Brown's Blog : Hyper-V Version 2

Attaching Passthough Disks Via WMI (SCSI or IDE)

taylorb — Fri, 16 Oct 2009 20:06:02 GMT

So you want to use passthough disks with Hyper-V cool – but how do you script attaching them? Well here’s your answer… But first you need to decide if you are going to attach them to the virtual IDE controller or the virtual SCSI controller. The IDE controller is ideal if you plan to boot from the passthough disk or if your guest doesn’t support the virtual SCSI adapter (Linux), the SCSI controller is ideal if you want to add/remove storage from the virtual machine while it’s running (feature of Hyper-V R2) or if you have more than 4 disks you want to add. Attaching to SCSI or IDE is pretty similar – there are really only 1 difference I bolded it on both scripts below you just have to select the correct controller. Other than that you can either use the physical disk number for disk manager (not too bad) or if you provide a LUN ID when you create the storage (in the case of a SAN) you can use that which can be a bit more deterministic. Either way enjoy!

Attaching Passthrough Disk To IDE Controller

$HyperVGuest = "Passthough Demo"

$VMManagementService = Get-WmiObject -class "Msvm_VirtualSystemManagementService" -namespace "root\virtualization"
$Vm = Get-WmiObject -Namespace "root\virtualization" -Query "Select * From Msvm_ComputerSystem Where ElementName='$HyperVGuest'"

$VMSettingData = Get-WmiObject -Namespace "root\virtualization" -Query "Associators of {$Vm} Where ResultClass=Msvm_VirtualSystemSettingData AssocClass=Msvm_SettingsDefineState"

$VmIdeController = (Get-WmiObject -Namespace "root\virtualization" -Query "Associators of {$VMSettingData} Where ResultClass=Msvm_ResourceAllocationSettingData AssocClass=Msvm_VirtualSystemSettingDataComponent" |`
where-object {$_.ResourceSubType -eq "Microsoft Emulated IDE Controller" -and $_.Address -eq 0})

$DiskAllocationSetting = Get-WmiObject -Namespace "root\virtualization" -Query "SELECT * FROM Msvm_AllocationCapabilities WHERE ResourceSubType = 'Microsoft Physical Disk Drive'"
$DefaultHardDisk = (Get-WmiObject -Namespace "root\virtualization" -Query "Associators of {$DiskAllocationSetting} Where ResultClass=Msvm_ResourceAllocationSettingData AssocClass=Msvm_SettingsDefineCapabilities" | `
where-object {$_.InstanceID -like "*Default"})

$Disk = Get-WmiObject -Namespace "root\virtualization" -Query "select * from Msvm_DiskDrive Where DriveNumber=2"
#$Disk = Get-WmiObject -Namespace "root\virtualization" -Query "select * from Msvm_DiskDrive Where ElementName Like '%Lun 200%'"

$DefaultHardDisk.Parent = $VmIdeController.__Path
$DefaultHardDisk.Address = 0
$DefaultHardDisk.HostResource = $Disk.__PATH

$VMManagementService.AddVirtualSystemResources($VM, $DefaultHardDisk.PSBase.GetText(1)) | ProcessWMIJob $VMManagementService "AddVirtualSystemResources"

Attaching Passthrough Disk To SCSI Controller

$HyperVGuest = "Passthough Demo"

$VMSettingData = Get-WmiObject -Namespace "root\virtualization" -Query "Associators of {$Vm} Where ResultClass=Msvm_VirtualSystemSettingData AssocClass=Msvm_SettingsDefineState"

$VmScsiController = (Get-WmiObject -Namespace "root\virtualization" -Query "Associators of {$VMSettingData} Where ResultClass=Msvm_ResourceAllocationSettingData AssocClass=Msvm_VirtualSystemSettingDataComponent" | `
where-object {$_.ElementName -eq "SCSI Controller"})

$DiskAllocationSetting = Get-WmiObject -Namespace "root\virtualization" -Query "SELECT * FROM Msvm_AllocationCapabilities WHERE ResourceSubType = 'Microsoft Physical Disk Drive'"

$DefaultHardDisk = (Get-WmiObject -Namespace "root\virtualization" -Query "Associators of {$DiskAllocationSetting} Where ResultClass=Msvm_ResourceAllocationSettingData AssocClass=Msvm_SettingsDefineCapabilities" | `
where-object {$_.InstanceID -like "*Default"})

$Disk = Get-WmiObject -Namespace "root\virtualization" -Query "select * from Msvm_DiskDrive Where DriveNumber=2"

#$Disk = Get-WmiObject -Namespace "root\virtualization" -Query "select * from Msvm_DiskDrive Where ElementName Like '%Lun 200%'"

$DefaultHardDisk.Parent = $VmScsiController.__Path

$DefaultHardDisk.Address = 0
$DefaultHardDisk.HostResource = $Disk.__PATH

$VMManagementService.AddVirtualSystemResources($VM, $DefaultHardDisk.PSBase.GetText(1)) | ProcessWMIJob $VMManagementService "AddVirtualSystemResources"

Taylor Brown
Hyper-V Integration Test Lead
http://blogs.msdn.com/taylorb

Red Hat Support Coming To Hyper-V

taylorb — Mon, 16 Feb 2009 22:43:34 GMT

Last night Mike Neil posted to the Virtualization Team Blog regarding a new agreement between Microsoft and Red Hat to bring Red Hat guest support to Hyper-V. Take a look at Mike’s full blog post Microsoft and Red Hat Cooperative Technical Support and/or the Red Hat press release Red Hat Moves to Expand Server Virtualization Interoperability. Happy day to all..

Taylor Brown
Hyper-V Integration Test Lead
http://blogs.msdn.com/taylorb

Microsoft Hyper-V Server 2008 R2 Beta Released

taylorb — Tue, 27 Jan 2009 01:53:00 GMT

The Microsoft Hyper-V Server 2008 R2 Beta has been posted on the download center along with an overview document and a setup and configuration guide. Please note that all features, support, configuration etc… is subject to change as this is a beta

Download Links

Microsoft Hyper-V Server 2008 R2 Beta Download
Microsoft Hyper-V Server 2008 R2 Beta Overview
Microsoft Hyper-V Server 2008 R2 Beta Setup and Configuration Guide

New Features In R2

Failover Clustering: The initial release of Microsoft Hyper-V Server 2008 did not include support for failover clustering. However, with Microsoft Hyper-V Server 2008 R2 Beta, host clustering technology is included to enable support for unplanned downtime.

Live migration: Microsoft Hyper-V Server 2008 R2 includes support for live migration. Live migration enables customers to move running applications between servers without service interruptions.

Processor and memory support: Microsoft Hyper-V Server 2008 R2 Beta now supports up to 8-socket physical systems and provides support for up to 32-cores. In addition, Microsoft Hyper-V Server 2008 R2 Beta supports up to 1TB of RAM on a physical system.

Updated Hyper-V Configuration Utility: The Hyper-V Configuration utility is designed to simplify the most common initial configuration tasks. It helps you configure the initial configuration settings without having to type long command-line strings. New configuration options have been added for R2 Beta including:
-Remote Management Configuration
-Failover Clustering Configuration
-Additional options for Updates

Virtualization Platform Comparison

The following is an overview comparison of the feature and support set for:
-Microsoft Hyper-V Server 2008
-Microsoft Hyper-V Server 2008 R2 Beta
-Windows Server 2008 R2 Beta (Enterprise and Datacenter Editions)

Capabilities	Microsoft Hyper-V Server 2008	Microsoft Hyper-V Server 2008 R2	Windows Server 2008 R2 EE, DC
Processor Architecture x64 only	Yes	Yes	Yes
Hypervisor-based	Yes	Yes	Yes
Product Type	Standalone product	Standalone product	Operating System
Number of Sockets (Licensing)	Up to 4	Up to 8	Up to 8 = EE \| Up to 64 = DC
Number of cores supported by the hypervisor	24 (with QFE)	32	32
Memory	Up to 32 GB	Up to 1 TB	Up to 1TB
VM Migration	None	Quick and live migration	Quick and live migration (EE & DC)
Administrative UI	Command line, text based configuration utility and remote GUI management	Command line, text based configuration utility and remote GUI management	Command line, remote management, and local GUI (Hyper-V Manager MMC)
Management	Existing management tools
Virtualization Rights for Windows Server guests	0	0	EE = 4 VM DC Edition = unlimited VM per proc
Number of running VM Guests	Up to 192, or as many as physical resources allow	Up to 256, or as many as physical resources allow	Up to 256, or as many as physical resources allow
Storage	Direct Attach Storage (DAS): SATA, eSATA, PATA, SAS, SCSI, Firewire, Storage Area Networks (SANs): iSCSI, Fiber Channel, SAS
Planned Guest OS support	Windows Server 2008 R2, Windows Server 2008, Windows Server 2003 SP2, Windows 2000 Server, Novell SUSE Linux Enterprise Server 10, Windows 7, Windows Vista SP1 & Windows XP SP3/SP2

Taylor Brown
Hyper-V Integration Test Lead
http://blogs.msdn.com/taylorb

Windows Server 2008 R2 Beta Download Public

taylorb — Sat, 10 Jan 2009 02:40:10 GMT

Ok the Windows Server 2008 R2 Beta is now available for public download…

Take a look at http://www.microsoft.com/windowsserver2008/en/us/R2-Beta.aspx for all of the information. Or here’s the direct link to the download: http://www.microsoft.com/downloads/details.aspx?FamilyID=85cfe4c9-34de-477c-b5ca-75edae3d57c5&DisplayLang=en.

Taylor Brown
Hyper-V Integration Test Lead
http://blogs.msdn.com/taylorb

Windows Server 2008 R2 Beta… Ohh and Windows 7 too…

taylorb — Thu, 08 Jan 2009 22:58:08 GMT

Unless you’ve been under a rock all day you know that Windows 7 Beta was announced and released last night – along with Windows 7 Beta we also announced and released Server 2008 R2 (formally known as Windows 7 Server). If you have an MSDN subscription you can download the new hotness right now – just go to the subscriber downloads section. Apparently the build will be available to everyone as early as tomorrow – however I haven’t heard for sure yet…

New Hyper-V features include (not limited to): Live Migration, Improved Power Management (Core Parking/Timer Coalescing), Hot-Add/Remove of SCSI Disks, Native VHD Integration (Diskmgr/Diskpart can create/mount VHDs), Jumbo Frame Support, Performance Improvements, Deducted Guest External Networks, 32 Core Support and there are more that I am forgetting I am sure… I should say this is beta – these features are subject to change. Over the next month of so I as well as many others around the team will be posting information about new features and how they are used so look forward to that… For now I am just happy that you all get to play with Windows 7 (which btw ROCKs – I love it) and Server 2008 R2 w/Hyper-V…

Taylor Brown
Hyper-V Integration Test Lead
http://blogs.msdn.com/taylorb

Windows Server 2008 R2 Beta Reviewers Guide Posted

taylorb — Fri, 07 Nov 2008 08:08:36 GMT

The Windows Server 2008 R2 (Beta) Reviewers Guide has been posted, 74 pages of riveting marketing stuff about Windows Server 2008 R2 – they actually do a pretty good job talking about a new clustering feature specifically for Hyper-V named Cluster Shared Volumes (CSV). CSV allows multiple cluster nodes to utilize the same LUN at the same time allowing multiple virtual machines to co-exist on the same physical LUN while the virtual machines are running on different nodes. CSV is only going to be supported for Hyper-V environments and will be highly recommended to enable Live Migration…

There are many more features in Server 2008 R2 specific to virtualization – I will continue to provide details around those features as well as links to resources.

Taylor Brown
Hyper-V Integration Test Lead
http://blogs.msdn.com/taylorb