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Hyper-V CBT, Job shows warning "Failed to flush change tracking data"


Job could report warning "Failed to flush change tracking data for VM {$VMNAME}"
In the logs you could see:

[20.12.2012 23:45:29] <10> Error    The request is not supported.\n\nFailed to add file 'U:\Inventory\Inventory.vhd' to the list of CTP tracked items.\n
--tr:Failed to add file 'U:\Inventory\Inventory.vhd' to the list of CTP tracked items. VM: 'Inventory'. VmID: '{b2abace9-d782-4393-b7b4-84c2ba0b0f9d}'.\n
Failed to add file to change tracking.\nArguments:  (Veeam.Backup.Common.CAppException)
[20.12.2012 23:45:29] <10> Error    [Inventory]  Failed to flush change tracking data for VM Inventory before snapshot.


Issue might arise when you back up a VM that resides on Cluster Volume(Cluster Disk)


Changed block tracking on Cluster Volumes (Cluster Disks) is not supported, as a workaround please switch to CSV (Cluster Shared Volume).

Note: CBT for cluster disks is available with Veeam Backup & Replication (patch 4) and newer.

Veeam Backup & Replication
6.x to
Last Modified:
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