SOLVED How to delete VM after migration to ESXi?

[Antoshka]

Hi,
I changed the design of my server and now I run VMware ESXi as a hypervisor on top of all VMs. TrueNAS Scale is running as VM. The migration from TrueNAS with VMs and Containers to the "hypervisor" architecture went smoothly, I successfully restored TrueNAS from the backup config, but now I have an issue: I can not delete the VM.
I'm getting the following error:
"[EFAULT] This system does not support virtualization."
I know that TrueNAS doesn't support virtualization at the moment in my particular case.
Maybe someone knows how to delete this VM from GUI?
Thanks

 

[Samuel Tai]

Try configuring ESXi for nested virtualization to the TrueNAS VM.

https://docs.vmware.com/en/VMware-vSphere/7.0/com.vmware.vsphere.vm_admin.doc/GUID-2A98801C-68E8-47AF-99ED-00C63E4857F6.html

 

[Antoshka]

Thanks, Samuel, but I don't need the virtualization in TrueNAS anymore, it's why I just want to delete a VM.
If there are no other ways, I will try this workaround.
Thanks!

 

[Samuel Tai]

Yes, you'll need nested virtualization so the middleware in the VM will detect the CPU's virtualization capabilities and allow you to delete the VM. You can disable nested virtualization afterwards.

 

[Antoshka]

Thank you, Samuel, your approach resolved the issue. I was able to delete a VM as soon as I enabled the nested virtualization.

Important note: I had to turn off back the nested virtualization because otherwise I can't passthrough the PCI devices (HBA card with all drives and dedicated NIC for TrueNAS).

Thanks one more time for an extremely quick response!