4559: Acronis Product Fails to Back Up a VMware Virtual Machine with "Creating a quiesced snapshot failed" or "An error occurred while quiescing the virtual machine"

Try reinstalling or updating your VMware tools to fix the issue

Symptoms

  1. You are using one of the above products on an ESX Host to back up virtual machines;
  2. The backup of one or several of the virtual machines fails with an error message similar to one of the following:

    Awaiting task has failed (Cannot create a quiesced snapshot because the create snapshot operation exceeded the time limit for holding off I/O in the frozen virtual machine)

    Creating a quiesced snapshot failed

    Creating a quiesced snapshot failed because the create snapshot operation exceeded the time limit for holding off I/O in the frozen virtual machine

    An error occurred while quiescing the virtual machine. See the virtual machine's event log for details.

    VMware failed to create a quiesced snapshot of the selected virtual machine. To back up the machine, power off the machine before the process or uninstall the Volume Shadow Copy Services Support feature of VMware Tools from the VM.

    Awaiting task 'CreateSnapshot' has failed. Reason: Cannot create a quiesced snapshot because the create snapshot operation exceeded the time limit for holding off I/O in the frozen virtual machine..

    Protocol error from VMX

Cause

Please see the solution section of this article for specific causes and resolution.

Solution

In most cases, reinstalling/updating VMware tools and rebooting the virtual machine will resolve the issue. Please see the following articles:

 

If the error message is:

Creating a quiesced snapshot failed because the create snapshot operation exceeded the time limit for holding off I/O in the frozen virtual machine

Then see the following articles for a solution:

 

If ESX(i) version is 6.0, install this patch.

 

The error may be caused by pre-backup command failure. A pre-backup command (pre-freeze script located in /usr/sbin/pre-freeze-script on a Linux machine or in a specific directory on a Windows machine) is a user-supplied script that should be executed before backup. Usually, these scripts are used to quiesce an application that does not have its own VSS provider (in Windows) to ensure a consistent state before backup. When such a script exits with a non-zero return code, this indicates that the script failed to perform its quiescing task and quiesced snapshot operation has to be cancelled.

 

See also the following solutions:

More information

You can also try disabling the VSS component of VMware Tools to solve the issue, but only if the backed up VM does not run a database:

  • Uninstall the Volume Shadow Copy Services Support feature of VMware Tools from the virtual machine:
    1. Select the virtual machine in question on ESX server and go to Inventory -> Virtual Machine -> Install/Upgrade VMware Tools:
    2. This will launch the installation of VMware Tools on the virtual machine:

    3. Choose Modify:

    4. Uncheck the Volume Shadow Copy Services Support:

    5. Complete the modification:

    6. Reboot the virtual machine;
    7. Create a backup of this machine which should succeed this time.

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