# Before running the first backup, CBT (Changed Block Tracking) must be enabled for the VMs to be backed up. # /usr/sbin/vmware_cbt_tool.py --help
On Friday, October 6, 2023 at 11:47:03 PM UTC+3 Stephan Duehr wrote: Hello Ramil, there should be an error message logged after the "Get CBT failed:" which is what the plugin got back from the failed API call when it requested the CBT data. One cause for that issue can be that the VM was restored, which means that the disk was completey overwritten. In that case an incremental CBT backup is not possible. I think in the past this could also occur after a storage vmotion, but I'm not sure if that could still be a problem in current versions of vSphere. So whatever was the cause, the plugin can't do anything about it. The best you can do is run a full leven backup as soon as possible. Regards, Stephan On 10/5/23 06:39, Ramil wrote: > Hello! > I'm using version 22.1.1 > Recently, some virtual machine differential backup jobs started producing this message: > > 25 2023-10-04 22:26:39ct-bareos01-fd JobId 7410: Warning: python3-fd-mod: To minimize restore time, it is recommended to run this job at full level next time.24 2023-10-04 22:26:39ct-bareos01-fd JobId 7410: python3-fd-mod: Successfully got full CBT23 2023-10-04 22:26:39ct-bareos01-fd JobId 7410: Warning: python3-fd-mod: Falling back to full CBT22 2023-10-04 22:26:39ct-bareos01-fd JobId 7410: Error: python3-fd-mod: Get CBT failed: > > The backup completes successfully with the status OK, but in this case the differential backup is equal to the size of the full backup. This only applies to some VMs. This has never happened before. > > -- > You received this message because you are subscribed to the Google Groups "bareos-users" group. > To unsubscribe from this group and stop receiving emails from it, send an email to [email protected] <mailto: [email protected]>. > To view this discussion on the web visit https://groups.google.com/d/msgid/bareos-users/cd7b2be6-910d-46a8-b2b4-a4c713ad6851n%40googlegroups.com < https://groups.google.com/d/msgid/bareos-users/cd7b2be6-910d-46a8-b2b4-a4c713ad6851n%40googlegroups.com?utm_medium=email&utm_source=footer>. -- Stephan Dühr [email protected] Bareos GmbH & Co. KG Phone: +49 221-630693-90 http://www.bareos.com Sitz der Gesellschaft: Köln | Amtsgericht Köln: HRA 29646 Komplementär: Bareos Verwaltungs-GmbH Geschäftsführer: S. Dühr, J. Steffens, Philipp Storz -- You received this message because you are subscribed to the Google Groups "bareos-users" group. To unsubscribe from this group and stop receiving emails from it, send an email to [email protected]. To view this discussion on the web visit https://groups.google.com/d/msgid/bareos-users/26f6721f-7898-4a13-b40d-7d1a88bc0ed7n%40googlegroups.com.
