Failed to Create Quiesced Snapshot of VM

Product version: 11.0

Last modified: 12 September 2024

Problem

The following error message appears:

Source host/cluster could not create quiesced (application-aware) snapshot of this VM.

Background

When the application-aware mode is enabled, NAKIVO Backup & Replication uses guest OS quiescing to create a VM snapshot. Guest OS quiescing uses VSS to freeze I/O requests of applications inside the OS. If guest OS quiescing fails to create an application-consistent snapshot, NAKIVO Backup & Replication displays the above error.

Solution for VMware

  1. Update your virtual infrastructure (especially the hypervisor on the source host) to the latest version.

  2. Update VMware tools on the machines you protect to the latest version.

  3. Make sure VMware Snapshot Provider service is running on the source VM.

  4. Check if there are any Volume Shadow Copy Service errors in the Windows logs on the source VM.

  5. Try to create a snapshot manually with the following settings:

    • The Snapshot the virtual machine's memory option must be deselected.

    • The Quiesce guest file system option must be selected.

Quiesced Snapshot of a VM

If the manual snapshot does not work, the problem is likely caused by the VSS configuration.

Solution for Nutanix

  1. Log in to Nutanix Prism.

  2. Select the VM you want to protect and click Manage Guest Tools.

  3. In the Manage VM Guest Tools dialog box, select the following checkboxes:

    • Enable Nutanix Guest Tools.

    • Mount Nutanix Guest Tools: Make sure that the VM has at least one empty IDE CD-ROM slot to attach the ISO. For detailed information, refer to the Enabling and Mounting Nutanix Guest Tools page on the Nutanix portal.

    • Volume Snapshot Service / Application Consistent Snapshots (VSS).

  4. After Nutanix Guest Tools is mounted to the VM's CD-ROM, log in to the VM and install the Guest Tools manually.

Note

  • Nutanix VSS snapshots of the VMs with delta, SATA, and IDE disks are not supported.

  • Nutanix VSS snapshots fails if the VM has any iSCSI attachments.

For more information, refer to the Application-consistent snapshot guidelines page.

Solution for Proxmox VE

Follow the instructions below to apply the solution based on the possible cause of the error:

  1. QEMU Guest Agent is not installed on the source VM: Update your virtual infrastructure (in particular the hypervisor on the source host) to its latest version.

  2. QEMU Guest Agent is not running on the source VM: Make sure QEMU Guest Agent is installed and running on the source VM.

  3. QEMU Guest Agent on the source VM is out-of-date: Update QEMU Guest Agent on the source VM to its latest version.

    For more information, refer to the page: https://pve.proxmox.com/wiki/Qemu-guest-agent.

  4. Volume Shadow Copy Service (VSS) is not running properly on the source VM: Check the Windows logs on the source VM for Volume Shadow Copy Service errors.