Hi, nice post !
Do you know why we can´t enable DirectPath I/O on RedHat 6 X64 servers?
We have all memory reserved, but even that way it won´t goes to enable.
Our windows 2008 Enterprise servers are working fine with DirectPath I/O plus Performace Monde on UCS DVS.
The fact that you have your Windows servers working correctly it sounds like a RHEL optimisation is missing somewhere.
Try working through the below doc
If still no joy contact TAC
I would venture to say that the RHEL6 Guest needs to have vmtools installed. DirectPath will not be enable without vmtools for linux installed on the RHEL6 OS.
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