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Configuring VMDirectPath I/O pass-through devices on a VMware ESX or VMware ESXi host (1010789)

Last Updated: 3/20/2024Categories: How toTotal Views: 649201Language:
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Learn how VMware Skyline Advisor and Skyline Health Diagnostics work together to provide proactive intelligence and self-service log analysis.

Use Skyline Advisor to avoid issues before they occur across VCF, vSphere, vSAN, NSX, vROps & Horizon. Skyline Findings are based on top KBs, VMSAs/CVEs and design best practices.

Use Skyline Health Diagnostics to root cause vSphere & vSAN logs when an issue occurs. Skyline Health Diagnostic Findings are based on top KBs and VMSA/CVEs. You can use the Skyline Health Diagnostics tool in online or offline mode.

If you require additional help from technical support, please use Skyline Advisor to initiate a Log Assist to reduce time to upload logs. TSEs can also initiate logs to reduce effort.

Purpose

This article provides information on configuring VMDirectPath I/O direct PCI device connections for virtual machines.

Resolution

About VMDirectPath I/O passthrough devices

The supported maximums for passthrough devices per VMs are:

ESX\ESXi 4.0: 2 Devices

ESX\ESXi 4.1: 4 Devices

ESX\ESXi 5.0: 4 Devices

ESX\ESXi 5.1: 4 Devices

ESX\ESXi 5.5: 16 Devices

ESX\ESXi 6.x: 16 Devices

ESX\ESXi 7.x: 16 Devices

For more information, see Hardware Features Available with Virtual Machine Compatibility Settings

Configuring passthrough devices

Before configuring a device for PCI Passthrough, ensure that platform and device meets the PCI Passthrough requirements, see VMware vSphere VMDirectPath I/O: Requirements for Platforms and Devices (2142307).

To configure passthrough devices on an ESX/ESXi host:

Select an ESX\ESXi host from the Inventory of VMware vSphere Client.

In the Configuration tab, click Hardware Advanced Settings. The passthrough Configuration page lists all available pass-through devices.

Note: A green icon indicates that a device is enabled and active. An orange icon indicates that the state of the device has changed and the host must be rebooted before the device can be used.

Click Edit.

Select the devices and click OK.

When the devices are selected, they are marked with an orange icon. Reboot for the change to take effect. After rebooting, the devices are marked with a green icon and are enabled.

Note: The configuration changes are saved in the /etc/vmware/esx.conf file.

The PCI slot number where the device was connected is 00:0b:0. It is recorded as:

/device/000:11.0/owner = "passthru"

Note: 11 is the decimal equivalent of the hexadecimal 0b.

To configure a PCI device on a virtual machine:

From the Inventory in vSphere Client, right-click the virtual machine and click Edit Settings.

Click the Hardware tab.

Click Add.

Choose the PCI Device.

Click Next.

Note: When the device is assigned, the virtual machine must have a memory reservation for the full configured memory size.

Related Information

For more information, see Configuration Examples and Troubleshooting for VMDirectPath Guide.

For HP Proliant servers experiencing issues with VMDirectPath, this is a known issue in VMware ESXi 5.1, Patch Release ESXi510-201307001 (2052143) and later. These issues are addressed in VMware ESXi 5.5, Patch Release ESXi550-201501001 (2099265). For more information, see HP Advisory c03835455.

Note: The preceding link was correct as of July 9, 2014. If you find the link is broken, provide feedback and a VMware employee will update the link.

PCI Passthrough with PCIe devices behind a non-ACS switch in vSphere
Como configurar dispositivos de interconexão de VMDirectPath I/O em um host ESX
在 VMware ESX 或 VMware ESXi 主机上配置 VMDirectPath I/O 直通设备
VMware ESXi 5.1, Patch Release ESXi510-201307001
Unable to disable USB controller for passthrough after it is enabled
VMware ESX/ESXi ホスト上の VMDirectPath I/O パススルー デバイスの構成
VMware ESXi 5.5, Patch Release ESXi550-201501001
VMware vSphere VMDirectPath I/O: Requirements for Platforms and Devices
Konfigurieren von VMDirectPath-I/O-Passthrough-Geräten auf einem VMware ESX- oder VMware ESXi-Host

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