Citrix Systems 6.2.0 manual Updating VMs, Updating Windows Operating Systems

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Chapter 7. Updating VMs

This chapter discusses updating Windows VMs with updated operating systems, updating XenServer Tools, and updating VMs with new Linux kernel revisions.

Upgrades to VMs are typically required when moving to a new version of XenServer. The following are current issues involving upgrading VMs running on XenServer to this version:

•XenMotion of Windows VMs is not supported until the XenServer Tools are upgraded.

•Suspend/Resume of Windows VMs is not supported until the XenServer Tools are upgraded.

•The use of certain anti-virus and firewall applications can crash the Windows VM unless the XenServer Tools are upgraded.

7.1. Updating Windows Operating Systems

Warning:

Before updating Windows operating systems you must uninstall the XenServer Tools. If they are present during the attempt to update, the update will fail.

Windows installation disks typically provide an upgrade option if you boot them on a server which has an earlier version of Windows already installed.

You can update the operating system of Windows VMs in a similar way.

To uninstall the XenServer Tools

1.From the Start button, select Control Panel.

2.In Windows XP, 2000, or 2003, select Add or Remove Programs.

In Windows 7 and Vista, select Programs, then select Programs and Features.

3.Select select Citrix Tools for Virtual Machines.

4.In Windows XP, 2000, or 2003, click the Remove button.

In Windows 7 and Vista, from the toolbar above the list of programs, select Uninstall.

This removes the XenServer Tools. When the operation completes a message is displayed. Click OK to close the message box.

Once the operating system update is complete, reinstall the XenServer Tools just as you would after installing a fresh Windows VM. See Section 9.3, “XenServer Tools” for details.

7.2. Updating XenServer Tools for Windows VMs

The XenServer Tools are available in XenCenter on the built-in xs-tools.iso. On the VM menu, select Install XenServer Tools; this attaches the CD image containing the XenServer Tools to the VM. If Autoplay is enabled for the VM CD drive, installation will be started automatically after a few moments. If Autoplay is not enabled, double-click on the CD drive, and select xensetup.exe to begin the XenServer Tools installation. Follow the on-screen prompts to install the new drivers, which will automatically deactivate and upgrade the old drivers.

7.3. Updating Linux Kernels and Guest Utilities

The Linux guest utilities can be updated by rerunning the Linux/install.sh script from the built-in xs- tools.iso CD image (see Section 5.5, “Installing the Linux Guest Agent”). From time to time, Citrix also supplies updated RHEL 4.x Linux kernels for supported distributions on the website, http://updates.vmd.citrix.com/

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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 About this Document OverviewXenServer Documentation Virtual Machines Creating VMsOther Methods of VM Creation Importing an Exported VM XenServer ToolsPage Supported Guests and Allocating Resources Supported Guests, Virtual Memory, and Disk Size LimitsOperating System Minimum Maximum Minimum Disk Space 4GB 8GB Operating System Experimental GuestsDeprecated Guests XenServer Product Family Virtual Device SupportVirtual device Linux VMs Windows VMs VM Block Devices Creating Windows VMs Basic Procedure for Creating a Windows VMAvailable Windows Templates Template Name DescriptionUsing XenCenter to Create a VM Attaching an ISO Image LibraryTo create a Windows 7 32-bit VM Page Installing a Windows VM from an ISO Repository Using the CLI Using the CLI to Create a Windows VMCreating Linux VMs Distribution Vendor Install From Network From CD RepositoryCreating a Linux VM by Installing from a Physical CD/DVD Network Installation Notes Creating a Linux VM by Installing From an ISO ImageAdvanced Operating System Boot Parameters To install Debian using a preseed fileTo install Rhel Using a Kickstart File To install the guest agent Installing the Linux Guest AgentLinux Distribution Installation Notes Additional Installation Notes for Linux DistributionsAdditional Debian Notes Preparing to Clone a Linux VMMachine Name IP addressPage XenMotion and Storage XenMotion VM Migration with XenMotion and Storage XenMotionXenMotion Storage XenMotionMigrating a VM using XenCenter Live VDI MigrationLimitations and Caveats To Move Virtual Disks Updating VMs To uninstall the XenServer ToolsUpdating Windows Operating Systems Updating XenServer Tools for Windows VMsPage VApps Creating a vApp using XenCenterManaging vApps in XenCenter Creating vAppsDeleting vApps using XenCenter Start and shutdown vApps using XenCenterDeleting vApps To start a vAppImporting and Exporting vApps To export a vAppTo import a vApp Persist XenDesktop Private Desktop Mode VM Boot BehaviorReset XenDesktop Shared Desktop Mode Advanced Notes for Virtual MachinesInstalldir/xensetup.exe /S /norestart Connecting to a Windows VM Using Remote Desktop Windows Volume Shadow Copy Service VSS providerTo enable the Windows XenServer VSS provider To Enable Remote Desktop on a Windows VMTime Handling in Linux VMs Time Handling in Windows VMsInstalling a VM from Reseller Option Kit BIOS-locked Media To set individual Linux VMs to maintain independent timesGuest OS Dependent wallclock Independent wallclock Preparing for Cloning a Windows VM Using VSS Using XenCenterUsing the CLI Cloning Windows VMs Assigning a GPU to a Windows VM for Use with XenDesktopTo assign a GPU to a Windows VM using xe CLI To assign a GPU to a Windows VM using XenCenterTo detach a Windows VM from a GPU using XenCenter To detach a Windows VM from a GPU using the xe CLIDetach the GPU from the VM by entering the following To Import the Demo Linux Virtual Appliance Using XenCenter Importing the Demo Linux Virtual ApplianceUseful Tests Page Importing and Exporting VMs Supported FormatsFormat Description Attribute Description Open Virtualization Format OVF and OVAXVA Format Disk Image Formats VHD and VmdkXVA Version 1 Format Operating System FixupTransfer VM Importing VMsTo use the RawVDI transfer protocol Importing VMs from OVF/OVA To Import VMs from OVF/OVA using XenCenterPage Importing Disk Images To Import VMs from a Disk Image using XenCenterImporting VMs from XVA To Import VMs from XVA Files VM using XenCenterTo Import a VM from XVA using the xe CLI Exporting VMsExporting VMs as OVF/OVA To Export VMs as OVF/OVA using XenCenter Exporting VMs as XVA To Export VMs as XVA Files using XenCenterTo Export VMs as XVA Files using the xe CLI Release Notes Appendix A. Windows VM Release NotesRed Hat Enterprise Linux 4.5 to Appendix B. Linux VM Release NotesPreparing a Rhel 4.5 to 4.8 guest for cloning Red Hat Enterprise LinuxOracle Enterprise Linux CentOSSuse Enterprise Linux 10 SP1 Suse Enterprise Linux 10 SP3Ubuntu Appendix C. Creating ISO Images Creating an ISO on a Linux computerOn a Windows computer Enabling a Graphical Console on Debian Squeeze VMs Appendix D. Enabling VNC for Linux VMsConfiguring GDM to use VNC Determining the Location of your VNC Configuration FileVNC Screen Resolution Firewall SettingsCreate the xinetd.d file, /etc/xinetd.d/vnc-server-stream Enabling VNC for RHEL, CentOS, or OEL 6.x VMsEnabling Remote Administration Setting up SLES-based VMs for VNCModifying the xinetd Configuration Checking for a VNC ServerTo Open the VNC Port on Sles 10.x VMs Firewall To Open the VNC Port on Sles 11.x VMs Firewall Checking RunlevelsCopying Installation Media Appendix E. Setting Up a Red Hat Installation ServerEnable Remote Access NFSHttp FTPTo enable saving of Linux VM crash dumps Appendix F. Troubleshooting VM ProblemsVM Crashes Controlling Linux VM Crashdump BehaviourTroubleshooting Boot Problems on Linux VMs
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