Powering on the virtual machine fails with the error: Invalid memory setting for FPT: memory reservation (sched.mem.min) should be equal to memsize(xxxx)

Products

• VMware vSphere ESXi

Issue/Introduction

Symptoms:

• Cannot power on the virtual machine
• Virtual machine with a FPT (Full Passthrough) device fails to power on
• Powering on the virtual machine fails
• You see the error:
  
  Module MemSched power on failed.
  Error while parsing scheduler specific config parameters.
  Invalid memory setting for FPT: memory reservation (sched.mem.min) should be equal to memsize(xxxx)
  
  Note: Where xxxx is the memory size in MB.
   

Environment

VMware vSphere ESXi 6.x
VMware vSphere ESXi 7.x
VMware vSphere ESXi 8.x

Cause

This issue occurs if the virtual machine has one or more FPT (Full Passthrough) devices and if you have not configured the memory reservation or the reserved memory is not equal to the configured memory.

Resolution

To resolve this issue:

1. Right-click the virtual machine and click Edit settings.
2. Click the Resources tab.
3. Select Memory and increase the reservation amount to its configured memory size.
4. Click OK.
5. Power on the virtual machine.

For more information on changing memory reservations, see: Allocate Memory Resources to a Virtual Machine in the VMware Host Client

Workaround:
Set the to latency sensitivity to  'Normal' for more information visit 
https://docs.vmware.com/en/VMware-vSphere/7.0/com.vmware.vsphere.resmgmt.doc/GUID-206CF841-F34E-4F54-855F-DA403311CB66.html 

Additional Information