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Knowledge Base

ESX/ESXi driver module fails to load and reports the error: Bad parameter (1038247)

Last Updated: 3/3/2014Categories: TroubleshootingTotal Views: 57446Language:
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Symptoms

After upgrading from a previous version of ESX/ESXi or after applying the advanced driver module options, one or more driver modules fail to load

The hardware devices, such as a network card or HBA, do not function

The /var/log/vmkernel or /var/log/messages log files contain entries similar to:

'VmkCtl' warning] Loading module ModuleName failed. Unable to load module /usr/lib/vmware/vmkmod/ModuleName.o: Bad parameter

The configuration file, /etc/vmware/esx.conf, contains driver module options for the cited driver. For example:

/vmkernel/module/ModuleName.o/options = "InvalidParameter=value"
/vmkernel/module/ModuleName2.o/options = " "

Note: If the network drivers do not load successfully, the ESX/ESXi host may not boot properly.

Resolution

This issue occurs when invalid options are specified for a driver module. During ESX/ESXi startup, the driver module options are validated. If an invalid module option is configured, it may not be noticed until a subsequent reboot.

Caution: Do not edit the /etc/vmware/esx.conf configuration file directly.

To validate the currently configured driver module options:

Open a console to the ESX/ESXi host. For more information, see Unable to connect to an ESX host using Secure Shell (SSH) (1003807) or Using Tech Support Mode in ESXi 4.1 (1017910).

Run this command to view a list of the options available for the driver module:

vmkload_mod -s ModuleName

Run this command to view the currently configured options for the driver module:

esxcfg-module -g ModuleName

For example:

ModuleName enabled = X options = 'option1=value1 option2=value2'

Review the list of options from Steps 2 and 3 to determine the invalid option name. The format of module configuration options is a space delimited list of key=value pairs.

Note: An options list consisting only of whitespace is invalid. For example, ModuleName enabled = X options = ' '

Using the esxcfg-module command, specify correct options for the driver module or remove all module options. To remove all module options, you simply enter a null value for the option, which appears as "". For example:

esxcfg-module --set-options "" ModuleName

Note: For the changes to take effect, you must reboot the host.

For more information, see Configuring advanced driver module parameters in ESX/ESXi (1017588).

Related Information

ESX/ESXi ドライバ モジュールがロードに失敗し、「不正なパラメータ」というエラーが表示される
ESX/ESXi 驱动程序模块加载失败，并报告错误： 参数错误

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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