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libvirt by default has cgroup controllers of ["cpu", "devices", "memory", "blkio", "cpuacct"] as shown in qemu.conf. I want to add one more controller of net_cls. I tried to modify the config file to make the update.

cgroup_controllers = ["cpu", "devices", "memory", "blkio", "cpuacct", "net_cls"]

I restarted cgroup and libvirt service but the new controller didn't show up. How to add net_cls to libvirt group in cgroup?

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Doesn't look like libvirt supports the net_cls controller:

"The net_cls is not currently used. Instead traffic filter policies are set directly against individual virtual network interfaces"

Directly copied from http://libvirt.org/cgroups.html

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