How to enable nested virtualization
Hi all, We are trying to run virtual box in a vm that is running over ovirt platform. I had followed the instruction to enable nested virtualization on host as described in this document https://ostechnix.com/how-to-enable-nested-virtualization-in-kvm-in-linux/ However I was not able to enable nested virtualization to the vm since nothing is listed from virsh console. Also tryed to edit vm configuration lookig up for "cpu mode" or "copy cpu configuration as host" Also from oVirt admin portal I had enabled host for nested virtualization through Compute > Host > selected Host > edit > Kernel Nested virtualization checked. But the host still returns: $ cat /sys/module/kvm_intel/parameters/nested N
Maybe this can help you: https://docs.fedoraproject.org/en-US/quick-docs/using-nested-virtualization-... /etc/modprobe.d/kvm.conf options kvm_intel nested=1 sudo modprobe -r kvm_intel sudo modprobe kvm_intel nested=1
You need to reinstall the host after having enabled the nested feature and obviously reboot the host so as it will boot with the new kernel feature. Le 26 févr. 2021 19:57, miguel.garcia@toshibagcs.com a écrit : Hi all, We are trying to run virtual box in a vm that is running over ovirt platform. I had followed the instruction to enable nested virtualization on host as described in this document https://ostechnix.com/how-to-enable-nested-virtualization-in-kvm-in-linux/ However I was not able to enable nested virtualization to the vm since nothing is listed from virsh console. Also tryed to edit vm configuration lookig up for "cpu mode" or "copy cpu configuration as host" Also from oVirt admin portal I had enabled host for nested virtualization through Compute > Host > selected Host > edit > Kernel Nested virtualization checked. But the host still returns: $ cat /sys/module/kvm_intel/parameters/nested N _______________________________________________ Users mailing list -- users@ovirt.org To unsubscribe send an email to users-leave@ovirt.org Privacy Statement: https://www.ovirt.org/privacy-policy.html oVirt Code of Conduct: https://www.ovirt.org/community/about/community-guidelines/ List Archives: https://lists.ovirt.org/archives/list/users@ovirt.org/message/U7IPOFY374742N...
Already tried the instructions to enable nested virtualization on host as described above including reboot. Even got the following output from host cat /sys/module/kvm_intel/parameters/nested Y But from vm trying to verify vm has enabled virtualization running command sudo kvm-ok expecting to get INFO: /dev/kvm exists KVM acceleration can be used but instead get the following: INFO: Your CPU does not support KVM extensions KVM acceleration can NOT be used I guess requires additional change so I tried to follow up. According withdocumentation around this topic need to set nested virtualization in vort-manager but only found how to do it in other patforms instead oVirt. Do you have idea how to do it?
There are two main parts to nested KVM. 1st the host must have it enabled, so put host in maintenance mode through engine UI, set boot option to add it, go to UI host 'installation'->reinstall to pick up the changes and reboot, or is it reboot and then reinstall, I forget. [image: nested-1.JPG] 2nd part is enabling the VM in the VM edit dialog by setting 'Host' CPU option Pass-Through for the VM. [image: nested-2.JPG] On Mon, Mar 1, 2021 at 4:19 PM <miguel.garcia@toshibagcs.com> wrote:
Already tried the instructions to enable nested virtualization on host as described above including reboot. Even got the following output from host cat /sys/module/kvm_intel/parameters/nested Y
But from vm trying to verify vm has enabled virtualization running command sudo kvm-ok expecting to get INFO: /dev/kvm exists KVM acceleration can be used
but instead get the following: INFO: Your CPU does not support KVM extensions KVM acceleration can NOT be used
I guess requires additional change so I tried to follow up. According withdocumentation around this topic need to set nested virtualization in vort-manager but only found how to do it in other patforms instead oVirt. Do you have idea how to do it? _______________________________________________ Users mailing list -- users@ovirt.org To unsubscribe send an email to users-leave@ovirt.org Privacy Statement: https://www.ovirt.org/privacy-policy.html oVirt Code of Conduct: https://www.ovirt.org/community/about/community-guidelines/ List Archives: https://lists.ovirt.org/archives/list/users@ovirt.org/message/P3V62FBPEKSAEZ...
participants (4)
-
Edward Berger -
Guillem Liarte -
miguel.garcia＠toshibagcs.com -
Nathanaël Blanchet