Failed to move a VM out of maintenance mode candidate host since the VM is in manual mode!

2 thoughts on “Failed to move a VM out of maintenance mode candidate host since the VM is in manual mode!”

• John says:

  20. August 2025 at 13:56

  Thank you for the post. This was a start to identify vMotion blockers. I have created a script to identify this as well as a few other vMotion blockers. Sharing for others to add to.

  Clear-Host
  # Connect to vCenter
  $VCServer = read-host “Enter Vcenter server to query for VM issues?”
  Connect-VIServer -Server $VCServer

  Clear-Host
  Write-Host ” ”
  (get-cluster).Name
  write-host “”
  #Getting Cluster to check for any manual DRS setting per VM.
  $BaseCluster = Read-host “Enter cluster name to check?”

  # Get all VMs
  $VMs = Get-VM -Location $BaseCluster
  $Report = “c:\temp\” + $BaseCluster + “_Issues.txt”

  # Initialize results array
  $results = @()

  # Check for Manual DRS settings
  $drsOverrides = (Get-Cluster $BaseCluster).ExtensionData.ConfigurationEx.DrsVmConfig
  if ($drsOverrides.Behavior -eq “manual”) {
  Write-Output “VM Manual DRS settings” `n | out-file $Report
  }

  foreach ($vm in $VMs) {

  $issues = @()

  $vmView = Get-View -Id $vm.Id
  $config = $vmView.Config
  $hardware = $config.Hardware

  # Check for Passthrough Devices
  if ($hardware.Device | Where-Object { $_ -is [VMware.Vim.VirtualPCIPassthrough] }) {
  $issues += “Passthrough device”
  }
  # Check for SCSI Bus Sharing
  if ($hardware.Device | Where-Object { $_ -is [VMware.Vim.VirtualSCSIController] -and $_.sharedBus -ne “noSharing” }) {
  $issues += “SCSI Bus Sharing”
  }

  # Check for Shared HardDisks
  $SDisks = $hardware.device.backing.sharing
  if ($SDisks -eq “sharingMultiWriter”) {
  $issues += “Shared HardDisk”
  }

  # Check for Mounted ISO
  if ($hardware.Device | Where-Object { $_ -is [VMware.Vim.VirtualCdrom] -and $_.Backing -is [VMware.Vim.VirtualCdromIsoBackingInfo] }) {
  $issues += “Mounted ISO”
  }

  # Check for Serial or Parallel Ports
  if ($hardware.Device | Where-Object { $_ -is [VMware.Vim.VirtualSerialPort] -or $_ -is [VMware.Vim.VirtualParallelPort] }) {
  $issues += “Serial/Parallel port”
  }

  # Check for CPU Affinity
  if ($config.CpuAffinity -and $config.CpuAffinity.AffinitySet) {
  $issues += “CPU Affinity”
  }

  # Check for Encryption
  if ($config.VmEncryption) {
  $issues += “VM Encryption”
  }

  # Check for Unsupported Devices (e.g., Floppy)
  if ($hardware.Device | Where-Object { $_ -is [VMware.Vim.VirtualFloppy] }) {
  $issues += “Floppy drive”
  }

  # Check for Advanced Settings that may block vMotion
  $advSettings = $vmView.Config.ExtraConfig | Where-Object {
  $_.Key -match “sched.cpu.affinity” -or $_.Key -match “monitor_control.pinned”
  }
  if ($advSettings) {
  $issues += “Advanced settings (e.g., CPU pinning)”
  }

  # Add to results if any issues found
  if ($issues.Count -gt 0) {
  $issues += $vm
  $results += $issues -join “, ”
  $results | Out-File -Append -FilePath $Report
  }
  if ($results.count-lt 1) {Write-Output “No issues found” | Out-File -FilePath $Report}
  $issues = “”
  $vm = “”
  $vmView = “”
  $config = “”
  $hardware = “”
  $drsOverrides = “”
  $results = “”
  }

  Reply
  • H. Cemre Günay says:

    24. August 2025 at 17:05

    Thats to kind, thank you so much!!

    Reply

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