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Knowledge Base

Virtual machine does not power on when there is high CPU reservation (1001637)

Last Updated: 3/9/2021Categories: TroubleshootingTotal Views: 12410Language:
Chinese (Simplified)JapaneseEnglish

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Details

Unable to power on virtual machine

The following error messages are displayed:

CPU min outside valid range

Invalid CPU allocation requested for VM

A message similar to the following may be reported in /var/log/vmware/hostd.log

msg = 'Group host/user: Invalid cpu allocation requested for VM vmm0:V0D0-MVCSSA0-01. (min: 6400 mhz, max: 4294967295, minLimit: 4294967295, shares: 4294967292)\nCould not power on VM : CPU min outside valid range.\nFailed to power on VM',
faultCause = <unset>,
faultMessage = (vmodl.LocalizableMessage) [],
reason = 'Group host/user: Invalid cpu allocation requested for VM vmm0:V0D0-MVCSSA0-01. (min: 6400 mhz, max: 4294967295, minLimit: 4294967295, shares: 4294967292)\nCould not power on VM : CPU min outside valid range.\nFailed to power on VM',
messageInfo = (vim.vm.Message) []

Solution

This issue occurs if the CPU min value is outside the valid range that the PCPU cannot serve.

The CPU min value may become invalid if:

The virtual machine was migrated from one host to another and PCPU capacity of the destination host is less than that of the source host.

The PCPU values were changed after the virtual machine was created and the current PCPU capability is insufficient to meet the virtual machine requirements.

To resolve this issue:
Using the  vSphere Client
Using the ESXi shell

vSphere Client:

Connect to the ESX or vCenter Server host with appropriate administrative credentials.

Select the virtual machine from the inventory.

Right-click on the virtual machine and click Edit Settings.

On the Virtual Machine Properties dialog, click the Resources tab.

Select CPU from list under the Settings column.

Use the slider or the Reservation text box to lower the CPU reservation value.

ESXi shell:

Establish an SSH session to your ESX host. For more information, see Opening a command or shell prompt (1003892).

Log in as root.

Run the following command to list the location of the configuration files for the virtual machines registered on that ESX host:

vmware-cmd -l

Record the location of the .vmx file (configuration file) for the virtual machine you are troubleshooting.

For example:

/vmfs/volumes/46b2f3eb-ced4c7d8-c1d2-111122223333/vm-name/vm-name.vmx

If the virtual machine is not registered on the ESX host and you want to search its configuration file, run the following command and press Enter:

find/vmfs -name "*.vmx”

Make a backup copy of the vm-name.vmx file.

Open the vm-name.vmx file in a text editor and locate the line:

sched.cpu.min = "3230"

The value identified in the quotes exceeds the amount of physical CPU for one core. Lower the reservation by changing this value.

Save the file and exit the editor.

Power on the virtual machine.

For related troubleshooting information, see Troubleshooting a virtual machine that is unresponsive because of a configuration issue (1007814).

Additional Information

For translated versions of this article, see:

日本語: CPU 予約値が高いとき仮想マシンがパワーオンされない (2096912)

简体中文: 在高 CPU 预留条件下无法启动虚拟机 (2105563)

Related Information

Powering on a virtual machine fails with the error: Insufficient capacity on each physical CPU
Failed to power on virtual machine

Detectable by VMware SkylineTM

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End Of General Availability of the Free vSphere Hypervisor (ESXi 7.x and 8.x) (2107518)

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Download and Install VMware Fusion (2014097)

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