VMs restart after a node came back from pause

Marek Godlewski 1 Reputation point
2020-08-08T17:35:10.847+00:00

Hi,

We've a HV cluster based on Windows 2012 R2 consisting of 4 nodes connected via FC to common storage (NetApp). From couple of months we are getting strange behavior. When we put a node into to the pause al machines are moved from this node correctly. Then we are making any maintenance like OS update etc. Then we restarting this paused node - after it get back to live we are unpause it. And then strange things happens - all the vms are returning back to the node but all of them resets dirty :(. We were checking all of the logs and have no clue what can be wrong with our configuration. During unpause the communication with the cluster is ok also the storage is available. Maybe some of You have any clue or suggestion ?

best regards

Mark

Hyper-V
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A Windows technology providing a hypervisor-based virtualization solution enabling customers to consolidate workloads onto a single server.
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Windows Server Clustering
Windows Server Clustering
Windows Server: A family of Microsoft server operating systems that support enterprise-level management, data storage, applications, and communications.Clustering: The grouping of multiple servers in a way that allows them to appear to be a single unit to client computers on a network. Clustering is a means of increasing network capacity, providing live backup in case one of the servers fails, and improving data security.
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  1. Didier3001 966 Reputation points Microsoft Employee
    2020-08-09T10:24:33.24+00:00

    Hi @Marek Godlewski

    Is there any error or even "Information" in the Windows event log on any of the Hyper-v node that could be relevant and could help us identify the problem?

    Can you also post the output of the following commands:

    1. Get-ClusterResource "Virtual Machine"
      => Replace "Virtual Machine" with the name of one of the VM you know 100% had the behavior your described in your original post.
    2. Get-ClusterResource -Name "YourClusterName" | Get-ClusterParameter
      => Replace "YourClusterName" with the name of your cluster

    Regards,
    Didier3001

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  2. Marek Godlewski 1 Reputation point
    2020-08-10T00:26:04.587+00:00

    Hi @Didier3001

    ThankYou for the reply. Here is what I noted for the VM named WEDWARESET03 during it restart at 5:21 PM on 08.08.20. I'm attaching part of the VM system log from that time and also part of the Cluster log from HV (WEDWARHV06) host on which this VM resides. Also attaching results of the ps commands You mentioned. Second command should be:
    Get-ClusterResource -Cluster "YourClusterName" | Get-ClusterParameter ?

    best regards

    Marek Godlewski16564-hv-wedwarhv06-clusterlog-1715-1730-080820.txt16593-wedwarhvc01-cluster-parameter.txt16565-wedwareset03-information.txt16556-vm-wedwareset03-system-log.txt

  3. Marek Godlewski 1 Reputation point
    2020-08-14T13:11:01.043+00:00

    Hi - In the meantime we noticed those entries in cluster log (screenshots attached) - maybe this can tell some about the problem ?

    best regards

    marek Godlewski17727-image002.png17728-image001.png

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