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https://issues.apache.org/jira/browse/CLOUDSTACK-7932?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14215962#comment-14215962
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ASF GitHub Bot commented on CLOUDSTACK-7932:
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Github user karuturi commented on the pull request:
https://github.com/apache/cloudstack/pull/39#issuecomment-63441065
I dont see a case when it could return false then.
> [Hyper-V] Wrong semantics for isVmAlive() method in HypervInvestigator
> ----------------------------------------------------------------------
>
> Key: CLOUDSTACK-7932
> URL: https://issues.apache.org/jira/browse/CLOUDSTACK-7932
> Project: CloudStack
> Issue Type: Bug
> Security Level: Public(Anyone can view this level - this is the
> default.)
> Reporter: Anshul Gangwar
> Assignee: Anshul Gangwar
> Fix For: 4.5.0
>
>
> The isVmAlive() method should return null when it is unable to conclusively
> determine if the VM is alive or not.
> I ran some tests using Simulator and found that HypervInvestigator determined
> that VM is not alive. How can HypervInvestigator determine status of a VM
> running on Simulator or any other HV?
> 2014-11-15 13:35:21,692 INFO [c.c.h.HighAvailabilityManagerImpl]
> (HA-Worker-1:ctx-e0b5183c work-1) HypervInvestigator found
> VM[SecondaryStorageVm|s-1-VM]to be alive? false
> Full logs for the HA worker thread
> 2014-11-15 13:35:21,642 INFO [c.c.h.HighAvailabilityManagerImpl]
> (HA-Worker-1:ctx-e0b5183c work-1) Processing
> HAWork[1-HA-1-Running-Investigating]
> 2014-11-15 13:35:21,648 INFO [c.c.h.HighAvailabilityManagerImpl]
> (HA-Worker-1:ctx-e0b5183c work-1) HA on VM[SecondaryStorageVm|s-1-VM]
> 2014-11-15 13:35:21,658 DEBUG [c.c.h.CheckOnAgentInvestigator]
> (HA-Worker-1:ctx-e0b5183c work-1) Unable to reach the agent for
> VM[SecondaryStorageVm|s-1-VM]: Resource [Host:1] is unreachable: Host 1: Host
> with specified id is not in the right state: Down
> 2014-11-15 13:35:21,659 INFO [c.c.h.HighAvailabilityManagerImpl]
> (HA-Worker-1:ctx-e0b5183c work-1) SimpleInvestigator found
> VM[SecondaryStorageVm|s-1-VM]to be alive? null
> 2014-11-15 13:35:21,659 INFO [c.c.h.HighAvailabilityManagerImpl]
> (HA-Worker-1:ctx-e0b5183c work-1) XenServerInvestigator found
> VM[SecondaryStorageVm|s-1-VM]to be alive? null
> 2014-11-15 13:35:21,659 DEBUG [c.c.h.UserVmDomRInvestigator]
> (HA-Worker-1:ctx-e0b5183c work-1) Not a User Vm, unable to determine state of
> VM[SecondaryStorageVm|s-1-VM] returning null
> 2014-11-15 13:35:21,659 INFO [c.c.h.HighAvailabilityManagerImpl]
> (HA-Worker-1:ctx-e0b5183c work-1) PingInvestigator found
> VM[SecondaryStorageVm|s-1-VM]to be alive? null
> 2014-11-15 13:35:21,659 DEBUG [c.c.h.ManagementIPSystemVMInvestigator]
> (HA-Worker-1:ctx-e0b5183c work-1) Testing if VM[SecondaryStorageVm|s-1-VM] is
> alive
> 2014-11-15 13:35:21,670 DEBUG [c.c.a.t.Request] (HA-Worker-1:ctx-e0b5183c
> work-1) Seq 2-5786281096240955453: Sending { Cmd , MgmtId: 1, via:
> 2(SimulatedAgent.08984ca6-967c-49b0-84c1-968076cd6992), Ver: v1, Flags:
> 100011,
> [{"com.cloud.agent.api.PingTestCommand":{"_computingHostIp":"172.16.15.74","wait":20}}]
> }
> 2014-11-15 13:35:21,670 DEBUG [c.c.a.t.Request] (HA-Worker-1:ctx-e0b5183c
> work-1) Seq 2-5786281096240955453: Executing: { Cmd , MgmtId: 1, via:
> 2(SimulatedAgent.08984ca6-967c-49b0-84c1-968076cd6992), Ver: v1, Flags:
> 100011,
> [{"com.cloud.agent.api.PingTestCommand":{"_computingHostIp":"172.16.15.74","wait":20}}]
> }
> 2014-11-15 13:35:21,675 DEBUG [c.c.a.t.Request] (HA-Worker-1:ctx-e0b5183c
> work-1) Seq 2-5786281096240955453: Received: { Ans: , MgmtId: 1, via: 2, Ver:
> v1, Flags: 10,
> { Answer } }
> 2014-11-15 13:35:21,675 DEBUG [c.c.h.AbstractInvestigatorImpl]
> (HA-Worker-1:ctx-e0b5183c work-1) host (172.16.15.74) cannot be pinged,
> returning null ('I don't know')
> 2014-11-15 13:35:21,678 DEBUG [c.c.a.t.Request] (HA-Worker-1:ctx-e0b5183c
> work-1) Seq 3-248260929458798725: Sending { Cmd , MgmtId: 1, via:
> 3(SimulatedAgent.9bcff565-4ae7-492a-8e39-30d11f1cbbd7), Ver: v1, Flags:
> 100011,
> [{"com.cloud.agent.api.PingTestCommand":{"_computingHostIp":"172.16.15.74","wait":20}}]
> }
> 2014-11-15 13:35:21,679 DEBUG [c.c.a.t.Request] (HA-Worker-1:ctx-e0b5183c
> work-1) Seq 3-248260929458798725: Executing: { Cmd , MgmtId: 1, via:
> 3(SimulatedAgent.9bcff565-4ae7-492a-8e39-30d11f1cbbd7), Ver: v1, Flags:
> 100011,
> [{"com.cloud.agent.api.PingTestCommand":{"_computingHostIp":"172.16.15.74","wait":20}}]
> }
> 2014-11-15 13:35:21,691 DEBUG [c.c.a.t.Request] (HA-Worker-1:ctx-e0b5183c
> work-1) Seq 3-248260929458798725: Received: { Ans: , MgmtId: 1, via: 3, Ver:
> v1, Flags: 10, { Answer }
> }
> 2014-11-15 13:35:21,691 DEBUG [c.c.h.AbstractInvestigatorImpl]
> (HA-Worker-1:ctx-e0b5183c work-1) host (172.16.15.74) cannot be pinged,
> returning null ('I don't know')
> 2014-11-15 13:35:21,691 DEBUG [c.c.h.ManagementIPSystemVMInvestigator]
> (HA-Worker-1:ctx-e0b5183c work-1) unable to determine state of
> VM[SecondaryStorageVm|s-1-VM] returning null
> 2014-11-15 13:35:21,691 INFO [c.c.h.HighAvailabilityManagerImpl]
> (HA-Worker-1:ctx-e0b5183c work-1) ManagementIPSysVMInvestigator found
> VM[SecondaryStorageVm|s-1-VM]to be alive? null
> 2014-11-15 13:35:21,692 INFO [c.c.h.HighAvailabilityManagerImpl]
> (HA-Worker-1:ctx-e0b5183c work-1) KVMInvestigator found
> VM[SecondaryStorageVm|s-1-VM]to be alive? null
> 2014-11-15 13:35:21,692 INFO [c.c.h.HighAvailabilityManagerImpl]
> (HA-Worker-1:ctx-e0b5183c work-1) HypervInvestigator found
> VM[SecondaryStorageVm|s-1-VM]to be alive? false
> 2014-11-15 13:35:21,692 WARN [o.a.c.f.j.AsyncJobExecutionContext]
> (HA-Worker-1:ctx-e0b5183c work-1) Job is executed without a context, setup
> psudo job for the executing thread
> 2014-11-15 13:35:21,725 DEBUG [o.a.c.f.j.i.AsyncJobManagerImpl]
> (HA-Worker-1:ctx-e0b5183c work-1) Sync job-116 execution on object
> VmWorkJobQueue.1
> 2014-11-15 13:35:22,212 DEBUG [c.c.h.HighAvailabilityManagerImpl]
> (HA-Worker-1:ctx-e0b5183c work-1) VM is not HA enabled so we're done.
> 2014-11-15 13:35:22,212 INFO [c.c.h.HighAvailabilityManagerImpl]
> (HA-Worker-1:ctx-e0b5183c work-1) Completed HAWork[1-HA-1-Running-Scheduled]
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