About this release
XenServer 7.1 LTSR CU2 is the second Cumulative Update for the XenServer 7.1 Long Term Service Release (LTSR). This article provides important information about the XenServer 7.1 CU2 release.
XenServer 7.1 CU2 is available in two commercial editions:
- Standard Edition
- Enterprise Edition
XenServer 7.1 Cumulative Update 2 and its subsequent hotfixes are available only to customers with Customer Success Services.
For XenServer 7.1 LTSR, mainstream support is available till 15 Aug 2022, with the option for customers to add up to five years of chargeable, extended support.
The XenServer 7.1 CU1 release is supported for three months following the release of XenServer 7.1 CU2. During this time, we will issue critical hotfixes for both XenServer 7.1 CU1 and XenServer 7.1 CU2. We will issue any functional hotfixes for XenServer 7.1 CU2 only.
To receive support and be eligible for any hotfixes issued after March 12, 2019, you must install this Cumulative Update to your Xenserver 7.1 servers by this date.
Included in XenServer 7.1 CU2
XenServer 7.1 CU2 rolls-up all previously issued XenServer 7.1 CU1 hotfixes and simultaneously introduces new fixes for issues reported on XenServer 7.1 CU1. For more information, see Fixed issues in XenServer 7.1 CU2.
Some performance or non-functional improvements are also included. For more information, see Improvements in XenServer 7.1 CU2.
To minimize changes within the LTSR product, no additional features are included in XenServer 7.1 CU2
Improvements in XenServer 7.1 CU2
In addition to the rolled-up hotfixes, XenServer 7.1 CU2 includes some performance or non-functional improvements that are available for all licensed LTSR customers.
- Improved support for importing HyperV generated VHD images into XenServer.
- Updated Dom0 tools for supporting higher Ethernet speeds (50G/100G etc).
XenServer entitlement for Citrix Virtual Apps and Desktops service subscribers
If you have a Citrix Virtual Apps and Desktops service subscription that enables the use of on-premises Desktops and Apps, you are entitled to use XenServer for hosting these Desktops and Apps. XenServer 7.1 LTSR CU2 adds supports for this license type, enabling you to use all of the same premium features as with an on-premises XenApp and XenDesktop entitlement.
Download a license through the licensing management tool. Install this license on your License Server to use on-premises XenServer with your Citrix Virtual Apps and Desktops service subscription.
Support for new guest operating systems
XenServer 7.1 CU2 now supports the following new guests:
- Debian Stretch 9.0
- RHEL/CentOS/OEL/Scientific Linux 6.9
- RHEL/CentOS/OEL/Scientific Linux 7.4
- RHEL/CentOS/OEL/Scientific Linux 7.5
- SUSE Linux Enterprise Desktop 12 SP3
- SUSE Linux Enterprise Server 12 SP3
- Ubuntu 18.04
- Windows Server 2019 (drivers available on Windows Update or by installing hotfix XS71ECU2007)
Support for new processors
The following processors are now supported in XenServer 7.1 CU2:
- Intel Processor families E-21xxG/21xx (Coffee Lake S)
For more information, see the Hardware Compatibility List.
Automatic application of hotfixes during upgrade or update
XenServer simplifies the hotfix application mechanism when upgrading your XenServer hosts or pools to a newer version. The enhanced Rolling Pool Upgrade and the Install Update wizards in XenCenter allow you to install available hotfixes when upgrading to a newer version of XenServer. This enables you to bring your standalone hosts or pools up-to-date with a minimum number of reboots at the end. You must be connected to the Internet during the upgrade process for this feature to work.
You can benefit from the automatic application of hotfixes feature when you use the XenCenter issued with the latest XenServer Cumulative Update to upgrade from any supported version of XenServer to XenServer 7.1 CU2.
Rolling Pool Upgrade is an Enterprise feature. Upgrading your XenServer hosts using the Rolling Pool Upgrade wizard is available for XenServer Enterprise Edition customers, or those who have access to XenServer through their Citrix Virtual Apps and Desktops (formerly XenApp and XenDesktop) entitlement.
Using the Install Update wizard in XenCenter to update your version of XenServer is available to all users of XenServer. For more information about XenServer 7.1 CU2 licensing, see Licensing.
XenServer 7.1 CU2 is available to download from the XenServer Product Download page in the following packages:
XenServer 7.1.2 Cumulative Update 2 Installation comprises only the fixes that make up the cumulative update. Use this ISO to apply the cumulative update to an existing installation of XenServer 7.1 CU1.
XenServer 7.1.2 Base Installation ISO including Cumulative Update 2 comprises both a base XenServer 7.1 installation and the fixes that make up the cumulative updates. Use this ISO to create a fresh installation of XenServer 7.1 including CU1 and CU2 or to upgrade from XenServer 6.2, 6.5, or 7.0.
- If you use XenCenter to update your hosts, update your XenCenter installation to the latest version supplied on theXenServer 7.1 download page before beginning.
- Always update the pool master before updating any other hosts in a pool.
The following table shows the available options when moving from an existing version of XenServer to XenServer 7.1 CU2.
|Installed Version||Update using XenServer 7.1.2 Cumulative Update 2 Installation||Upgrade or fresh install using XenServer 7.1.2 Base Installation ISO including Cumulative Update 2|
|XenServer 7.1 CU1||YES||NO|
Customers on XS 7.1 are required to first update to XenServer 7.1 CU1 before updating to XenServer 7.1 CU2.
After installation of XenServer 7.1 CU2, the internal product version number is shown as 7.1.2.
If you use the vSwitch Controller Virtual Appliance or PVS Accelerator Supplemental Pack, ensure that you update these components to the latest version provided on the XenServer Product Download page for XenServer 7.1 Cumulative Update 2.
If you upgrade a host with legacy disk partition from XenServer 6.x to XenServer 7.1 CU1, and then attempt to apply XenServer 7.1 CU2 as an update, you may receive an insufficient space error. To avoid this happening, apply XS71ECU1033 on XS 7.1 CU1 before attempting to update to CU2. If this does not solve the issue, refer to CTX202821 - File System on Control Domain Full for further actions to clear up space.
If you use XenCenter to update your hosts, the list of available updates will show both XenServer 7.1 CU2 and any currently released hotfixes for XenServer 7.1 that are not yet applied.
As XenServer 7.1 CU2 includes all the hotfixes released to date, applying it avoids having to install earlier released hotfixes for XenServer 7.1 CU1. For more information, see Fixed issues in XenServer 7.1 CU2.
For a period of 3 months after the release of XenServer 7.1 CU2, there might be further XenServer 7.1 critical hotfixes released that are not included in XenServer 7.1 CU2. These hotfixes will have equivalent hotfixes released for XenServer 7.1 CU2, if required. Customers on XenServer 7.1 CU1 can choose to apply the XenServer 7.1 CU1 hotfixes or to apply XenServer 7.1 CU2 and the equivalent hotfixes for XenServer 7.1 CU2.
If you choose to use the Automated Updates feature to install updates on XenServer 7.1 CU1, it is recommended to update XenCenter to the version available for XenServer 7.1 CU2 first. When Automated Update is selected, the XenServer 7.1 CU2 update and hotfixes available for XenServer 7.1 CU2 are applied. For more details, See Update your hosts.
Optional components updated in XenServer 7.1 CU2
The following are new/updated optional components for the XenServer 7.1 CU2 release. All other optional components remain the same as the XenServer 7.1 CU1 release.
- vSwitch Controller Virtual Appliance
- PVS Accelerator Supplemental Pack
- Software Development Kit (SDK) 7.1.2
- Driver Development Kit (DDK) 7.1.2
Changing from XenServer 7.1 LTSR CU2 to the Current Release
If you’re running XenServer 7.1 LTSR CU2, but want to take advantage of new features, you can instead decide to change to the XenServer CR stream. Using the XenServer versions from the CR stream requires you to adopt new CRs regularly to remain in support.
The latest XenServer CR is available to download from the XenServer Product Download page.
Changing from the Current Release to XenServer 7.1 LTSR CU2
If you’re running a XenServer CR, but want to move to a version of XenServer with a guaranteed and stable feature set, you can change to XenServer 7.1 LTSR CU2. Use the XenServer 7.1.2 Base Installation ISO including Cumulative Update 2 to create a fresh installation of XenServer. There is no upgrade path from the XenServer CR stream to XenServer 7.1 LTSR.
Upgrade your Citrix License Server to version 11.14 or higher in order to use all XenServer 7.1 licensed features.
For more information about XenServer 7.1 licensing, see XenServer 7.1 Licensing FAQ.
Interoperability with Citrix products
XenServer 7.1 CU2 is interoperable with Citrix Virtual Apps and Desktops 7 1808.1 (CR), Citrix XenApp/XenDesktop 7.6 (LTSR), and 7.15 (LTSR). We recommend that you use this XenServer LTSR with a XenApp/XenDesktop LTSR.
The localized versions of XenCenter (Simplified Chinese and Japanese) are also available in this release.
To access XenServer 7.1 LTSR product documentation, see XenServer LTSR Product Documentation.
In this article
- About this release
- Support timeline
- Included in XenServer 7.1 CU2
- Improvements in XenServer 7.1 CU2
- Installation options
- Optional components updated in XenServer 7.1 CU2
- Changing from XenServer 7.1 LTSR CU2 to the Current Release
- Changing from the Current Release to XenServer 7.1 LTSR CU2
- Interoperability with Citrix products
- Localization support
- Product documentation