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VyattaNATRouter
Contributor
Contributor

DirectPath I/O not enabled even after reboot

My goal here is to use PCI-Express NIC Cards and allow VMs to have direct control over the hardware. I have a Cisco UCS C210 M2 which has VT-d Support and is enabled.  I am able to add the NICs into the passthrough config, after which it informs me that i need to reboot the host to enable them.   I reboot the host and it still is saying a reboot is needed to enable these devices.   Looking for any ideas on TroubleShooting this and getting these cards or ports on the carrds to be assinable under a VM's settings.

thanks

Brian

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3 Replies
ndmuser
Enthusiast
Enthusiast

I have the same problem. Did you get a chance to find a solution?

Thank you!

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VyattaNATRouter
Contributor
Contributor

In order to resolve this (assuming that the device is behind an ACS capable switch), run the following command on the host:

esxcfg-advcfg -k TRUE disableACSCheck

Then reboot the system.

The above info was relayed to me by a co-worker and it worked for us. ymmv

thanks

Brian

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ziadbadawi
Contributor
Contributor

Hi,

I had this similar issue and the above recomended command solved it.

thanks and regards,

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