Re: [libvirt] cgroup limits only affect kvm guest under certain conditions

Did you just echo the main qemu-kvm PID, or did you also add the PIDs of every thread too ? From this description of the problem, I'd guess you've only confined the main process thread and thus the I/O & VCPU threads are not confined.

That was indeed correct. I was mislead by the fact that no child _processes_ were shown in ps. Once I added /proc/<qemu-pid>/tasks/* to tasks, it worked even when libvirt started the process. Thank you very much! Dominik