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HenrikS.
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Exchange 2013 DAG guests fail after upgrading HyperV 2016

Post by HenrikS. » Jul 13, 2018 6:17 am

Hello,

After upgrading two Hyper-V 2016 S2D clusters with the 2018-06 updates: KB4132216 and KB4284833, Windows 2012 R2 guests running Exchange CU21 DAGs fail to backup.
Backlog shows that:
The first DAG member started having this issue after the upgrade of the first Hyper-V cluster.
The Second DAG member started having this issue after the upgrade of the second Hyper-V cluster.


Veeam reports the following error: Processing EXCH-MBX03 Error: Error code: 0x80041032 Cannot query class instance from enumerator object [WMI] Failed get next object in collection.

System events show: Log Name: System Source: Service Control Manager Date: 12.07.2018 19.54.35 Event ID: 7011
A timeout (30000 milliseconds) was reached while waiting for a transaction response from the VeeamVssSupport service.

VeaamGuestHelper log within the guest show the last log lines 30 seconds before:
12.07.2018 19:54:05 15720 Cleaning CRpcServer data.
12.07.2018 19:54:05 15720 INFO Clearing list of VSS snapshot jobs.

After the failure started, Veeam B&R has been upgraded to 9.5U3a and 2018-07 MS patches and Guests have received their 2018-07 patches.
The Hyper-V 2016 cluster has remained on 2018-06.

We have registered a Support case: ID# 3092339, but since this issue is pretty painful we are also looking to the community now.

Does anyone have a clue of what could be going on here?
Is there anyway of enabling more debugging on the veeam services on either guest interaction proxy, hyper-v hosts or guest?


-BR

Andreas Neufert
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Re: Exchange 2013 DAG guests fail after upgrading HyperV 2016

Post by Andreas Neufert » Sep 23, 2018 6:18 pm

Will look into the support case.
Please check also: https://social.technet.microsoft.com/Fo ... Management

Andreas Neufert
Veeam Software
Posts: 2823
Liked: 478 times
Joined: May 04, 2011 8:36 am
Full Name: @AndyandtheVMs Veeam PM
Location: Germany
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Re: Exchange 2013 DAG guests fail after upgrading HyperV 2016

Post by Andreas Neufert » Sep 24, 2018 7:20 am

I see within your support case, that the backup is now running again and that you check with Microsoft Support the root cause.

Overall the following things are changed (based on support log):
- ArbTaskMaxIdle was set to 3600000 https://support.microsoft.com/en-us/hel ... nd-2012-r2
- Host was rebootet

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