https://login.veeam.com/en/oauth?client_id=nXojRrypJ8&redirect_uri=https%3A%2F%2Fwww.veeam.com%2Fservices%2Fauthentication%2Fredirect_url&response_type=code&scope=profile&state=eyJmaW5hbFJlZGlyZWN0TG9jYXRpb24iOiJodHRwczovL3d3dy52ZWVhbS5jb20va2IxNzE5IiwiaGFzaCI6ImU0MmQxMmZkLWQ4ODYtNGY1NS1hZjViLThlNTFjMmZiYWNlYyJ9
1-800-691-1991 | 9am - 8pm ET
EN

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

KB ID: 1719
Product: Veeam Backup & Replication
Version: 6.x to 7.0.0.839
Published: 2013-01-11
Last Modified: 2020-08-13

Challenge

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.
...

Cause

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

Solution

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 7.0.0.871 (patch 4) and newer.

 
KB ID: 1719
Product: Veeam Backup & Replication
Version: 6.x to 7.0.0.839
Published: 2013-01-11
Last Modified: 2020-08-13

Couldn't find what you were looking for?

Below you can submit an idea for a new knowledge base article.
Report a typo on this page:

Please select a spelling error or a typo on this page with your mouse and press CTRL + Enter to report this mistake to us. Thank you!

Spelling error in text

Knowledge base content request
By submitting, you agree that your personal data will be managed by Veeam in accordance with the Privacy Policy.

ty icon

Thank you!

We have received your request and our team will reach out to you shortly.

OK

error icon

Oops! Something went wrong.

Please go back try again later.