[jira] [Created] (VCL-974) VMware VMs may fail to power on if host does not support nested VMs

["Andy Kurth (JIRA)" <ji...@apache.org>]

Andy Kurth created VCL-974:
------------------------------

             Summary: VMware VMs may fail to power on if host does not support nested VMs
                 Key: VCL-974
                 URL: https://issues.apache.org/jira/browse/VCL-974
             Project: VCL
          Issue Type: Bug
          Components: vcld (backend)
    Affects Versions: 2.4.2
            Reporter: Andy Kurth
            Assignee: Andy Kurth
             Fix For: 2.5


{{VMware.pm}} is adding the following to the .vmx file to allow a VM to run nested VMs:
{noformat}
"monitor.virtual_mmu" => "hardware",
"monitor.virtual_exec" => "hardware",
"vhv.enable" => "TRUE",
{noformat}

On some hosts, these settings cause the VM to fail to power on.  In the VM's working directory, {{vmware.log}} contains the following:
{noformat}
2016-07-21T17:04:18.801Z| vmx| I120: Msg_Question:
2016-07-21T17:04:18.801Z| vmx| I120: [msg.cpuid.noVHVQuestion] Virtualized Intel VT-x/EPT is incompatible with this virtual machine configuration.
2016-07-21T17:04:18.801Z| vmx| I120+ Continue without virtualized Intel VT-x/EPT?
2016-07-21T17:04:18.801Z| vmx| I120: ----------------------------------------
2016-07-21T17:04:18.801Z| vmx| I120: MsgIsAnswered: Using builtin default '_No' as the answer for 'msg.cpuid.noVHVQuestion'
{noformat}

There is no way I have found to override the _msg.cpuid.noVHVQuestion_ parameter in the .vmx file.  If you comment out _msg.autoAnswer_ in the .vmx file or set it to false, the following appears in the vSphere Client:


It may be possible to detect whether or not the host will experience this problem by querying the _HV Replay Capable_ parameter from _esxcfg-info_:
{noformat}
[root@bn17-21:~] esxcfg-info | grep '\-HV Replay Capable'
         |----HV Replay Capable.....................................false
{noformat}

On hosts which don't experience this problem, the value is true.



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