Cluster Change Block Tracking

Discussions specific to Microsoft Hyper-V hypervisor

[MERGED]Incremental Backup for clustered hyper-v virtual mac

Veeam Logoby hafedh » Tue Mar 01, 2016 10:28 am

Hello everyone,

I have installed VEEAM B&R V9 and i have a Warning when i try to Backup Hyper-v Virtual Machine (This Virtual machine is in a Cluster HyperV 2008 R2);
Warning: Failed to flush change tracking data. Using full scan incremental run.
I don't have the possibility to backup this virtual machine with incremental Backup, just Full.

If a try to hyperv virtual machine (Standalone Hyperv - Not clustered), it's fine and i don't have any problem.

Can anyone help me please, thanks.

Best regards,
Hafedh
hafedh
Influencer
 
Posts: 10
Liked: never
Joined: Tue Mar 01, 2016 10:22 am
Full Name: hafedh

Re: Cluster Change Block Tracking

Veeam Logoby Vitaliy S. » Tue Mar 01, 2016 12:27 pm

Please take a look at this KB article and existing topic for more info on how to troubleshoot it. Thanks!
Vitaliy S.
Veeam Software
 
Posts: 20356
Liked: 1178 times
Joined: Mon Mar 30, 2009 9:13 am
Full Name: Vitaliy Safarov

Re: Cluster Change Block Tracking

Veeam Logoby hafedh » Tue Mar 01, 2016 1:56 pm

Thanks a lot for your reply,

I will check all of thsese solutions and I would come back to you to inform you of the result.

Thanks.
hafedh
Influencer
 
Posts: 10
Liked: never
Joined: Tue Mar 01, 2016 10:22 am
Full Name: hafedh

Re: Cluster Change Block Tracking

Veeam Logoby hafedh » Tue Mar 01, 2016 3:18 pm

Hi,
I have a question please: One of the cluster-nodes is turned off, this can be the problem ?

Thanks;
hafedh
Influencer
 
Posts: 10
Liked: never
Joined: Tue Mar 01, 2016 10:22 am
Full Name: hafedh

Re: Cluster Change Block Tracking

Veeam Logoby Vitaliy S. » Tue Mar 01, 2016 3:25 pm 1 person likes this post

Yes, CBT data is stored on each node of the cluster, and if it is turned off, then VM backup job will do a full image scan.
Vitaliy S.
Veeam Software
 
Posts: 20356
Liked: 1178 times
Joined: Mon Mar 30, 2009 9:13 am
Full Name: Vitaliy Safarov

[MERGED] About CBT and Hyper-V integration services

Veeam Logoby marieelieg » Thu Oct 20, 2016 7:20 am

Hello everyone. I am quite new to the forum so please excuse any wrongdoing on my part.

I have a hyper-v cluster and I created a backup containing some VMs. Some of those VMs didn't have hyper-v integration services up-to-date, but the backup was successful. I then updated the integration services on the VMs and rerun the backup (now it's incremental). Some of the VMs gave a warning :"Failed to create change tracking time stamp for virtual disk file" but the backup was completed. My question is when upgrading the integration services, does it reset or affect the CBT information in any way and that's why the backup gave me a warning? And if so do I have to run the backup job again as a full backup or does an incremental backup be sufficient?

I really appreciate your feedback as soon as possible and thank you in advance:D
marieelieg
Enthusiast
 
Posts: 80
Liked: 3 times
Joined: Thu Oct 20, 2016 7:15 am

Re: About CBT and Hyper-V integration services

Veeam Logoby Mike Resseler » Thu Oct 20, 2016 12:11 pm

Hi,

It depends actually. I have seen CBT resets for various reasons. If you do a failover to another host, if there is a sudden shutdown of the host (and then the host loses it's CBT information) or, as you state, when integration tools are updated and depending on what is in the update (so it is not every time actually) it can reset this also.

Windows server 2016 hyper-v will fix this but I'm afraid the older server solutions will always have this possibility.

You don't need to do a new full backup, as we will continue to do an incremental, however, we need to scan the VM to see what the changes are, and therefore, you will notice that the backup takes longer.

Hope it helps

Mike
Mike Resseler
Veeam Software
 
Posts: 3649
Liked: 402 times
Joined: Fri Feb 08, 2013 3:08 pm
Location: Belgium, the land of the fries, the beer, the chocolate and the diamonds...
Full Name: Mike Resseler

Re: About CBT and Hyper-V integration services

Veeam Logoby marieelieg » Thu Oct 20, 2016 12:44 pm

Thank you Mike. Your help is much appreciated.
marieelieg
Enthusiast
 
Posts: 80
Liked: 3 times
Joined: Thu Oct 20, 2016 7:15 am

[MERGED] Failed to create change tracking time stamp for vir

Veeam Logoby kshotrod » Wed Nov 08, 2017 4:22 pm

Veeam 8, Hyper V cluster, it does this on every backup that is ran. Each backup is there, but the boss wants the warnings gone from the logs, so i need to try and fix this. I ran the powershell command to reset the bit, that didnt work...
kshotrod
Lurker
 
Posts: 1
Liked: never
Joined: Wed Nov 08, 2017 4:02 pm
Full Name: Charlie Rhoades

Re: Cluster Change Block Tracking

Veeam Logoby foggy » Wed Nov 08, 2017 5:41 pm

Hi Charlie, some hints are given above, please review this thread.
foggy
Veeam Software
 
Posts: 15595
Liked: 1162 times
Joined: Mon Jul 11, 2011 10:22 am
Full Name: Alexander Fogelson

[MERGED] Failed Create change Tracking Time Stamp

Veeam Logoby wayne@kesmi.com » Wed Jan 17, 2018 5:10 am

My Veeam Detail:

Ver : 9.5.0.1038
Backup Type: Incremental

Cluster with 2 Hosts , Per Host have 4 VM.


It happen when im shut down all server include veeam backup server because of power maintenance ,
after Im start back the all server including Veeam Backup it display 'Failed create change tracking time stamp for virtual disk file',


Im try to :

- Reboot Nodes, Hosts, VMs
- Stop VeeamFCT service and Start it again
- Running Reset-HvVmChangeTracking

but no lucky.Please help.Thank you.
wayne@kesmi.com
Lurker
 
Posts: 1
Liked: never
Joined: Wed Jan 17, 2018 4:07 am
Full Name: Wayne

Re: Cluster Change Block Tracking

Veeam Logoby Shestakov » Wed Jan 17, 2018 9:25 am

Hello Wayne and welcome to the community!
That's a known Hyper-V cluster CBT issue. CBT data is stored on the hosts individually. Please review the thread for more details.

Have you tried to run backup job after all hosts are powered on?
Thanks!
Shestakov
Veeam Software
 
Posts: 5352
Liked: 444 times
Joined: Wed May 21, 2014 11:03 am
Location: Saint Petersburg
Full Name: Nikita Shestakov

Previous

Return to Microsoft Hyper-V



Who is online

Users browsing this forum: No registered users and 1 guest