On my host machine, I checked this command egrep -c '(vmx|svm)' /proc/cpuinfo and I got 12 which means KVM acceleration can be used. But In my Controller Node and Compute Node, I checked the same command but I got 0 which means KVM acceleration cannot be used. why this occurred?
I am using VirtualBox to install multiple nodes
You don't say it very clearly, but I understand that your cloud is implemented on VirtualBox VMs.
I wanted to say that VirtualBox does not support nested virtualization, i.e. guest CPUs don't inherit the virtualization features of their hosts, but VBox 6 seems to support it: https://forums.virtualbox.org/viewtop.... I didn't check if VT-x has been implemented by now.
Use the VirtualBox documentation to find out what you have to do. Personally, I learned about this new feature an hour ago and haven't used it yet. Perhaps Intel CPUs are not supported yet?
Alternatively, VMware products do support nested virtualization as far as I know. Again, I have not tried it.
Here:
Oracle VM VirtualBox supports nested virtualization on host systems that run AMD CPUs
So, if your host uses Intel CPUs, VirtualBox is not for you.
Devstack configures qemu instead of kvm. I think that it automatically configures kvm when it detects that the CPU supports virtualization.
Asked: 2019-08-24 11:26:27 -0600
Seen: 80 times
Last updated: Aug 24 '19
