9.5 Hyper-V 2016 Known Issues

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9.5 Hyper-V 2016 Known Issues

Veeam Logoby jazzoberoi » Fri Nov 18, 2016 4:03 am 2 people like this post

Hi Guys,

I was reading the release notes of the 9.5 version and noticed the following Known Issues with Hyper-V :

Resilient Change Tracking (RCT) returns incorrect changes for VMs which had their virtual disks moved with Storage Live Migration, resulting in corrupt backups. This is a Hyper-V 2016 issue that Microsoft is planning to address in the future update. Until then, disable the use of changed block tracking for any jobs processing such VMs.
• Application-aware processing of VMs with guest OS other than Windows Server 2016 fails with the “Failed to take in-guest VSS snapshot COM error: Code: 0x80042308” error. This issue is fixed in the recent Windows Updates for the corresponding operating systems.
• Application-aware processing of Active Directory domain controllers running on guest OS other than Windows Server 2016 fails with the “Failed to create VM recovery checkpoint” error (32770). This is a Hyper-V 2016 issue that Microsoft is planning to address in the future update.
• Backing up VMs from Hyper-V cluster in rolling upgrade is supported, however RCT will not be leveraged until the upgrade is completed for all nodes and cluster functional level is upgraded to Windows Server 2016. Keep in mind that VMs virtual hardware version must be upgraded to version 8.0 before RCT can be leveraged on the VM.

Is there a way to track or find out if and when these bugs will be resolved ?

The Resilient Change Tracking (RCT) was a big move forward for Hyper-V as it provided the baseline for change tracking in Hyper-V VM's instead of relying on the CBT driver provided by the backup provider (VEEAM in this case).

However, this bug is proving that we now will have to rely on the Microsoft QA to ensure no major bugs surface with the RCT, otherwise there is a strong possibility of backup corruption ! Unfortunately this bug proves that it could be a bumpy ride ahead :)
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Re: 9.5 Hyper-V Known Issues

Veeam Logoby Mike Resseler » Fri Nov 18, 2016 7:26 am 1 person likes this post

Jazz,

Tracking when this bug is resolved is done with Microsoft. And I would have no idea how to track their bugs. The only thing we can do is keep putting pressure on MSFT (and we do, and with us the entire community :-)) so that they put priority on this one. As you can see from the RN, MSFT is aware of it and they are working on it, and the moment we know it is fixed, we will certainly advise to install the necessary update

Cheers
Mike
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Re: 9.5 Hyper-V 2016 Known Issues

Veeam Logoby Thomas Hietschold » Mon Dec 05, 2016 10:11 am

The problem comes up after the live migration of a Hyper-V VM. We also tested it with manual copy of the .vhdx (because the the orgininal problem was described as "...virtual disks moved with Storage Live Migration"), without succes. But now we found a simple solution: delete the machine definition in Hyper-V, add a new machine with correct parameters, add the still available .vhdx of the deleted machine. Now the Veeam job works correct without error.
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Re: 9.5 Hyper-V 2016 Known Issues

Veeam Logoby Mike Resseler » Mon Dec 05, 2016 1:44 pm

Thomas,

That is interesting. So you delete the VM but not the disks, recreate a VM (with same parameters) and attach the disks and then it works again? Did you try to restore also? (Use Surebackup for the test to be sure that everything works)

Thanks
Mike
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Re: 9.5 Hyper-V 2016 Known Issues

Veeam Logoby Gostev » Tue Dec 06, 2016 2:32 pm

I would definitely expect this to work, because doing so resets CBT data.
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Re: 9.5 Hyper-V 2016 Known Issues

Veeam Logoby grazor » Wed Dec 07, 2016 9:00 pm

Any idea on which update is needed to resolve the “Failed to take in-guest VSS snapshot COM error: Code: 0x80042308” error?

I've tried creating a support case with Veeam as our backups are a complete mess right now, but they haven't been helpful, other than suggesting I contact Microsoft and find out why Veeam isn't backing anything up.
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Re: 9.5 Hyper-V 2016 Known Issues

Veeam Logoby Gostev » Mon Dec 12, 2016 2:57 am

Indeed, Hyper-V 2016 is extremely raw at the moment.
As to your question, try installing KB3063109.
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Re: 9.5 Hyper-V 2016 Known Issues

Veeam Logoby sbradbury » Thu Dec 15, 2016 9:34 am 2 people like this post

Just an FYI, hopefully save some people from down time, do NOT install KB3063109 on an exchange 2013/2016 server, it's no good.

https://social.technet.microsoft.com/Fo ... nservergen
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Re: 9.5 Hyper-V 2016 Known Issues

Veeam Logoby mkaec » Mon Jan 02, 2017 3:21 am

That was my question, too, when I read the 9.5 release notes. Why isn't there a link to an MS KB article that I can follow? Well, maybe a KB article does not exist. I don't know.

One of the things I'll remember about 2016 is how many problems VMware had with CBT and how happy I was to be on Hyper-V. I hope Microsoft doesn't turn the tide in 2017 with a lot of RTC bugs.
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Re: 9.5 Hyper-V 2016 Known Issues

Veeam Logoby Mike Resseler » Mon Jan 02, 2017 6:13 am

Marc,

We hope the same (obviously) and hope that they will put a lot of effort in it. But there is not only this change, there is also the change the way they deliver their updates which makes it confusing for many people. I guess we all will need to learn these new methods with update rollups and get used to it :-)
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Re: 9.5 Hyper-V 2016 Known Issues

Veeam Logoby JTT » Mon Jan 02, 2017 7:33 am

Does anybody have an update of the known issues?
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Re: 9.5 Hyper-V 2016 Known Issues

Veeam Logoby Mike Resseler » Mon Jan 02, 2017 11:56 am

Not for the moment. Soon we will have UR1 and some more information. I did find a link to track the updates for server 2016: https://support.microsoft.com/en-us/hel ... te-history
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Re: 9.5 Hyper-V 2016 Known Issues

Veeam Logoby mkaec » Mon Jan 02, 2017 1:38 pm

I'm OK with the update rollup methodology. It's much better than the "release hotfixes that are hard to find and are not released via Windows Update until we release a service pack except we no longer release service packs" methodology that they used to use.
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Re: 9.5 Hyper-V 2016 Known Issues

Veeam Logoby Mike Resseler » Mon Jan 02, 2017 1:46 pm

Marc,

Certainly not saying that it is a bad system. Just saying we need to get used to it. The only thing that really bothers me is the lack of information that you get per rollup update. It does state a few things what is fixed and enhanced but not really a lot more information. I'm hoping that they will increase their effort for that documentation so that we are better aware what is fixed and in what cases
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Re: 9.5 Hyper-V 2016 Known Issues

Veeam Logoby AlexLeadingEdge » Tue Jan 31, 2017 3:12 am

I believe I am having this same issue:

Application-aware processing of Active Directory domain controllers running on guest OS other than Windows Server 2016 fails with the “Failed to create VM recovery checkpoint” error (32770). This is a Hyper-V 2016 issue that Microsoft is planning to address in the future update.


Case # 02039027.

Windows Server 2016 Hyper-V + Veeam B&R 9.5 SP1 + SBS2011 (Windows Server 2008 R2 + Domain Controller + Exchange)

These are the error messages I'm seeing:

31/01/2017 1:56:16 p.m. :: Failed to create VM recovery checkpoint (mode: Veeam application-aware processing with failover) Details: Job failed ('Checkpoint operation for 'SBS-SVR' failed. (Virtual machine ID B854900D-2DA6-44D0-9E3A-24D5D4700368)'). Error code: '32768'. Failed to create VM recovery snapshot, VM ID 'b854900d-2da6-44d0-9e3a-24d5d4700368'.

31/01/2017 1:56:27 p.m. :: Retrying snapshot creation attempt (Failed to create production checkpoint.)

31/01/2017 1:56:40 p.m. :: Guest processing skipped (check guest OS VSS state and hypervisor integration components version)
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