vMotion Error – Failed to receive migration

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I recently ran into a situation, when after adding a new ESXi Host into a vSphere Cluster that will be used for Nested ESXi, I was unable to vMotion live VM’s onto the new Host. The error message I was getting was ‘Failed to receive migration’

A quick Google search didn’t yield any results, so I had to resort to reading the logs. In the Virtual Machine log file (vmware.log) I noticed this error message: (Scroll to the right)

2019-01-10T20:31:06.254Z| vmx| I125: Msg_Post: Error
2019-01-10T20:31:06.254Z| vmx| I125: [msg.cpuid.vhv.enablemismatch] Configuration mismatch: The virtual machine cannot be restored because the snapshot was taken with VHV enabled. To restore, set vhv.enable to true.

Doing a quick search of the term: vhv.enable showed me that this is required to be set on hosts that are being used for Nested ESXi. Thanks William Lam (https://www.virtuallyghetto.com/2012/08/how-to-enable-nested-esxi-other.html)

So I ran the following command on the new ESXi Host:

echo 'vhv.enable = "TRUE"' >> /etc/vmware/config

After that configuration was added to the config file, vMotions began to function as expected.

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