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VM's randomly experience connectivity errors.

Marc L
over 6 years ago

Every so often I will get errors with backup transfers that end up being connectivity errors in Rapid Recovery. For example, I have a VM that performed backups no issues every hour today except at 2:00 when I received an error that said it couldn't complete a backup due to "The Virtual Machine 'machine name' paired to another core." The stack trace reveals this:

Server side:

System.Security.Authentication.AuthenticationException: The virtual machine 'OTTEIQDATACOL' paired to another Core at Replay.Core.Implementation.VSphere.EsxVirtualMachineClient.GetVirtualMachine(Boolean ignorePairing) at Replay.Core.Implementation.VSphere.EsxVirtualMachineAgentClient.GetCurrentMetadata(MetadataCredentials metadataCredentials) at Replay.Core.Implementation.Agents.AgentsMetadataHelper.GetAgentMetadataInternalClient(AgentDescriptor agentDescriptor, IAgentClient agentClient) at Replay.Core.Implementation.Agents.ProtectedAgent.b__9() at Replay.Core.Implementation.Agents.ProtectedAgent.AgentClientSend[TResult](Func`1 func) at Replay.Core.Implementation.VSphere.EsxVirtualMachineAgent.GetMetadata() at Replay.Core.Implementation.Metadata.Cache.MetadataCacheService.UpdateAgentMetadataCacheEntry(IAgent agent, Boolean isForced, Boolean tryAgentServiceHostRestart)


UI side:

at Replay.Core.Implementation.VSphere.EsxVirtualMachineClient.GetVirtualMachine(Boolean ignorePairing)
at Replay.Core.Implementation.VSphere.EsxVirtualMachineAgentClient.GetCurrentMetadata(MetadataCredentials metadataCredentials)
at Replay.Core.Implementation.Agents.AgentsMetadataHelper.GetAgentMetadataInternalClient(AgentDescriptor agentDescriptor, IAgentClient agentClient)
at Replay.Core.Implementation.Agents.ProtectedAgent.b__9()
at Replay.Core.Implementation.Agents.ProtectedAgent.AgentClientSend[TResult](Func`1 func)
at Replay.Core.Implementation.VSphere.EsxVirtualMachineAgent.GetMetadata()
at Replay.Core.Implementation.Metadata.Cache.MetadataCacheService.UpdateAgentMetadataCacheEntry(IAgent agent, Boolean isForced, Boolean tryAgentServiceHostRestart)


We aren't performing any maintenance or doing anything with our VMware / Rapid Recovery infrastructure. Upon closer inspection of the VM in RR console, at the top it says "Some actions and metadata are unavailable because machine is unreachable."
I can connect to the VM using RDP just fine. Additionally in the RR console it says the disks are missing (which is also untrue).

What's causing these errors and how can I prevent them?

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  • 0 over 6 years ago

    Yup. Not 'ideal' I'd admit, but they are realistic challenges that one faces when moving to an agent-less solution. Not that you shouldn't, it is an excellent DP method from a management standpoint, it just presents it's own set of things to consider when configuring.

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  • 0 over 6 years ago

    Yup. Not 'ideal' I'd admit, but they are realistic challenges that one faces when moving to an agent-less solution. Not that you shouldn't, it is an excellent DP method from a management standpoint, it just presents it's own set of things to consider when configuring.

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