Citrix Systems 6.2.0 manual Appendix A. Windows VM Release Notes

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Appendix A. Windows VM Release Notes

A.1. Release Notes

There are many versions and variations of Windows with different levels of support for the features provided by XenServer. This section lists notes and errata for the known differences.

A.1.1. General Windows Issues

•When installing Windows VMs, start off with no more than three virtual disks. Once the VM and XenServer Tools have been installed you can add additional virtual disks. The boot device should always be one of the initial disks so that the VM can successfully boot without the XenServer Tools.

•Multiple VCPUs are exposed as CPU sockets to Windows guests, and are subject to the licensing limitations present in the VM. The number of CPUs present in the guest can be confirmed by checking Device Manager. The number of CPUs actually being used by Windows can be seen in the Task Manager.

•The disk enumeration order in a Windows guest may differ from the order in which they were initially added. This is because of interaction between the PV drivers and the PnP subsystem in Windows. For example, the first disk may show up as Disk 1, the next disk hotplugged as Disk 0, a subsequent disk as Disk 2, and then upwards in the expected fashion.

•There is a bug in the VLC player DirectX backend that causes yellow to be replaced by blue when playing video if the Windows display properties are set to 24-bit color. VLC using OpenGL as a backend works correctly, and any other DirectX- or OpenGL-based video player works too. It is not a problem if the guest is set to use 16- bit color rather than 24.

•The PV Ethernet Adapter reports a speed of 1 Gbps in Windows VMs. This speed is a hardcoded value and is not relevant in a virtual environment because the virtual NIC is connected to a virtual switch. The data rate is not limited by the advertised network speed.

A.1.2. Windows Server 2008

Quiesced snapshots taken on Windows Server 2008 guests will not be directly bootable. Attach the snapshot disk to an existing Windows Server 2008 VM to access files for restoration purposes.

A.1.3. Windows Server 2003

Windows Server 2003 32-bit does not boot successfully if any virtual disks larger than 2TB (terabytes) in size are attached to the VM. See this article in the Windows Hardware Developer Central website.

A.1.4. Windows 7

No known issues

A.1.5. Windows Vista

Microsoft Vista recommends a root disk of size 20GB or higher. The default size when installing this template is 24GB, which is 4GB greater than the minimum. Consider increasing this.

A.1.6. Windows XP SP3

Windows XP does not support disks larger than 2TB (terabytes) in size. See this article in the Windows Hardware Developer Central website.

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Contents Citrix XenServer 6.2.0 Virtual Machine Users Guide Trademarks Contents VM Migration with XenMotion and Storage XenMotion Importing the Demo Linux Virtual Appliance Windows VM Release Notes Setting Up a Red Hat Installation Server XenServer Documentation About this DocumentOverview Other Methods of VM Creation Virtual MachinesCreating VMs XenServer Tools Importing an Exported VMPage Operating System Minimum Maximum Minimum Disk Space Supported Guests and Allocating ResourcesSupported Guests, Virtual Memory, and Disk Size Limits 4GB 8GB Experimental Guests Operating SystemVirtual device Linux VMs Windows VMs Deprecated GuestsXenServer Product Family Virtual Device Support VM Block Devices Available Windows Templates Basic Procedure for Creating a Windows VMCreating Windows VMs Template Name DescriptionTo create a Windows 7 32-bit VM Using XenCenter to Create a VMAttaching an ISO Image Library Page Using the CLI to Create a Windows VM Installing a Windows VM from an ISO Repository Using the CLICreating Linux VMs Install From Network From CD Repository Distribution VendorCreating a Linux VM by Installing from a Physical CD/DVD Creating a Linux VM by Installing From an ISO Image Network Installation NotesTo install Rhel Using a Kickstart File Advanced Operating System Boot ParametersTo install Debian using a preseed file Installing the Linux Guest Agent To install the guest agentAdditional Installation Notes for Linux Distributions Linux Distribution Installation NotesMachine Name Preparing to Clone a Linux VMAdditional Debian Notes IP addressPage XenMotion VM Migration with XenMotion and Storage XenMotionXenMotion and Storage XenMotion Storage XenMotionLimitations and Caveats Migrating a VM using XenCenterLive VDI Migration To Move Virtual Disks Updating Windows Operating Systems To uninstall the XenServer ToolsUpdating VMs Updating XenServer Tools for Windows VMsPage Managing vApps in XenCenter Creating a vApp using XenCenterVApps Creating vAppsDeleting vApps Start and shutdown vApps using XenCenterDeleting vApps using XenCenter To start a vAppTo import a vApp Importing and Exporting vAppsTo export a vApp Reset XenDesktop Shared Desktop Mode VM Boot BehaviorPersist XenDesktop Private Desktop Mode Advanced Notes for Virtual MachinesInstalldir/xensetup.exe /S /norestart To enable the Windows XenServer VSS provider Windows Volume Shadow Copy Service VSS providerConnecting to a Windows VM Using Remote Desktop To Enable Remote Desktop on a Windows VMTime Handling in Windows VMs Time Handling in Linux VMsGuest OS Dependent wallclock Independent wallclock Installing a VM from Reseller Option Kit BIOS-locked MediaTo set individual Linux VMs to maintain independent times Using the CLI Preparing for Cloning a Windows VM Using VSSUsing XenCenter Assigning a GPU to a Windows VM for Use with XenDesktop Cloning Windows VMsTo detach a Windows VM from a GPU using XenCenter To assign a GPU to a Windows VM using XenCenterTo assign a GPU to a Windows VM using xe CLI To detach a Windows VM from a GPU using the xe CLIDetach the GPU from the VM by entering the following Useful Tests To Import the Demo Linux Virtual Appliance Using XenCenterImporting the Demo Linux Virtual Appliance Page Format Description Importing and Exporting VMsSupported Formats Open Virtualization Format OVF and OVA Attribute DescriptionDisk Image Formats VHD and Vmdk XVA FormatOperating System Fixup XVA Version 1 FormatTo use the RawVDI transfer protocol Transfer VMImporting VMs To Import VMs from OVF/OVA using XenCenter Importing VMs from OVF/OVAPage To Import VMs from a Disk Image using XenCenter Importing Disk ImagesTo Import VMs from XVA Files VM using XenCenter Importing VMs from XVAExporting VMs as OVF/OVA To Import a VM from XVA using the xe CLIExporting VMs To Export VMs as OVF/OVA using XenCenter To Export VMs as XVA Files using XenCenter Exporting VMs as XVATo Export VMs as XVA Files using the xe CLI Appendix A. Windows VM Release Notes Release NotesAppendix B. Linux VM Release Notes Red Hat Enterprise Linux 4.5 toRed Hat Enterprise Linux Preparing a Rhel 4.5 to 4.8 guest for cloningSuse Enterprise Linux 10 SP1 CentOSOracle Enterprise Linux Suse Enterprise Linux 10 SP3Ubuntu On a Windows computer Appendix C. Creating ISO ImagesCreating an ISO on a Linux computer Appendix D. Enabling VNC for Linux VMs Enabling a Graphical Console on Debian Squeeze VMsDetermining the Location of your VNC Configuration File Configuring GDM to use VNCFirewall Settings VNC Screen ResolutionEnabling VNC for RHEL, CentOS, or OEL 6.x VMs Create the xinetd.d file, /etc/xinetd.d/vnc-server-streamModifying the xinetd Configuration Setting up SLES-based VMs for VNCEnabling Remote Administration Checking for a VNC ServerTo Open the VNC Port on Sles 10.x VMs Firewall Checking Runlevels To Open the VNC Port on Sles 11.x VMs FirewallEnable Remote Access Appendix E. Setting Up a Red Hat Installation ServerCopying Installation Media NFSFTP HttpVM Crashes Appendix F. Troubleshooting VM ProblemsTo enable saving of Linux VM crash dumps Controlling Linux VM Crashdump BehaviourTroubleshooting Boot Problems on Linux VMs
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