Published on Mar 15, 2019

Issues Resolved In This Hotfix

This hotfix resolves the following issues:

• If you attempt to reboot a Windows VM from XenServer at the same time as you attempt to reboot the Windows VM from within the VM, the reboot can fail with the following error: 'You attempted an operation on a VM that needed to be in state 'Running but was in state 'Halted'.
• Scheduled metadata backups can fail intermittently when the pool backup metadata VDI gets full. The default size of the pool backup metadata VDI has been increased to 500MiB.
• A VM taking more than 30 seconds to shut down no longer leads to 'Domain stuck in dying state after 30s.'
• While applying a hotfix to a pool, if XAPI restarts on a pool member, it detaches the hotfix update from all hosts in the pool as part of clean-up operations. This can cause the hotfix to fail to apply to other pool members.

Installing the Hotfix

Customers should use either XenCenter or the XenServer Command Line Interface (CLI) to apply this hotfix. As with any software update, back up your data before applying this update. Citrix recommends updating all hosts within a pool sequentially. Upgrading of hosts should be scheduled to minimize the amount of time the pool runs in a 'mixed state' where some hosts are upgraded and some are not. Running a mixed pool of updated and non-updated hosts for general operation is not supported.

Note: The attachment to this article is a zip file. It contains the hotfix update package only. Click the following link to download the source code for any modified open source components XS71ECU2004-sources.iso. The source code is not necessary for hotfix installation: it is provided to fulfill licensing obligations.

Installing the Hotfix by using XenCenter

Choose an Installation Mechanism

There are three mechanisms to install a hotfix:

1. Automated Updates
2. Download update from Citrix
3. Select update or Supplemental pack from disk

The Automated Updates feature is available for XenServer Enterprise Edition customers, or to those who have access to XenServer through their XenApp/XenDesktop entitlement. For information about installing a hotfix using the Automated Updates feature, see the Applying Automated Updates in the XenServer documentation.

For information about installing a hotfix using the Download update from Citrix option, see Applying an Update to a Pool in the XenServer documentation.

The following section contains instructions on option (3) installing a hotfix that you have downloaded to disk:

1. Download the hotfix to a known location on a computer that has XenCenter installed.
2. Unzip the hotfix zip file and extract the .iso file
3. In XenCenter, on the Tools menu, select Install Update. This displays the Install Update wizard.
4. Read the information displayed on the Before You Start page and click Next to start the wizard.
5. Click Browse to locate the iso file, select XS71ECU2004.iso and then click Open.
6. Click Next.
7. Select the pool or hosts you wish to apply the hotfix to, and then click Next.
8. The Install Update wizard performs a number of update prechecks, including the space available on the hosts, to ensure that the pool is in a valid configuration state. The wizard also checks whether the hosts need to be rebooted after the update is applied and displays the result.

Follow the on-screen recommendations to resolve any update prechecks that have failed. If you want XenCenter to automatically resolve all failed prechecks, click Resolve All. When the prechecks have been resolved, click Next.

9. Choose the Update Mode. Review the information displayed on the screen and select an appropriate mode.

Note: If you click Cancel at this stage, the Install Update wizard reverts the changes and removes the update file from the host.

10. Click Install update to proceed with the installation. The Install Update wizard shows the progress of the update, displaying the major operations that XenCenter performs while updating each host in the pool.
11. When the update is applied, click Finish to close the wizard.
12. If you chose to carry out the post-update tasks, do so now.

Installing the Hotfix by using the xe Command Line Interface

1. Download the hotfix file to a known location.
2. Extract the .iso file from the zip.
3. Upload the .iso file to the Pool Master by entering the following commands:
   (Where -s is the Pool Master's IP address or DNS name.)
   

   xe -s <server> -u <username> -pw <password> update-upload file-name=<filename>XS71ECU2004.iso

   XenServer assigns the update file a UUID which this command prints. Note the UUID.

   b8992e46-3131-11e9-b455-4fc310f582d8

4. Apply the update to all hosts in the pool, specifying the UUID of the update:

   xe update-pool-apply uuid=b8992e46-3131-11e9-b455-4fc310f582d8

   Alternatively, if you need to update and restart hosts in a rolling manner, you can apply the update file to an individual host by running the following:

   xe update-apply host=<host> uuid=b8992e46-3131-11e9-b455-4fc310f582d8

5. Verify that the update was applied by using the update-list command.

   xe update-list -s <server> -u root -pw <password> name-label=XS71ECU2004

   If the update is successful, the hosts field contains the UUIDs of the hosts to which this patch was successfully applied. This should be a complete list of all hosts in the pool.
6. The hotfix is applied to all hosts in the pool, but it will not take effect until the XAPI service is restarted on all hosts. On the console of each host in the pool beginning with the master, enter the following command to restart the XAPI service:

   xe-toolstack-restart

   Note: When this command is run on the Pool Master, XenCenter will lose connection to the pool. Wait for 30 seconds after losing connection, and then reconnect manually.
7. Use the update-pool-clean command to remove the update files from all hosts in the pool. This command frees up space on shared storage and does not uninstall the update.

   xe update-pool-clean uuid=b8992e46-3131-11e9-b455-4fc310f582d8

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Files

Hotfix File

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Files Updated

More Information

For more information, see XenServer Documentation.

If you experience any difficulties, contact Citrix Technical Support.