Hi, Sam.
How can I make this persistant? Is there a configuration file?
Libvirt may not have that configuration. I think you can use "cgconfig" instead of it. Setting as follows, in my environment was successful. 1) edit /etc/cgconfig.conf # cpuset.cpus/mems is mandatory values. # Please set suitable values according to your environment. ---------- group libvirt { cpuset { cpuset.cpus = 0; cpuset.mems = 0; } } group libvirt/lxc { cpuset { cpuset.cpus = 0; cpuset.mems = 0; } devices { devices.allow = "c 10:200 rwm"; } } mount { cpuset = /cgroup/cpuset; cpu = /cgroup/cpu; cpuacct = /cgroup/cpuacct; memory = /cgroup/memory; devices = /cgroup/devices; freezer = /cgroup/freezer; net_cls = /cgroup/net_cls; blkio = /cgroup/blkio; } ---------- 2) restart cgconfig and libvirtd. # Order is "libvirtd stop->cgconfig restart->libvirtd start" 3) start lxc container. Result in my environment(CentOS6.2 x86_64+libvirt 0.9.8) is # virsh -c lxc:/// start lxc_container_1 Domain lxc_container_1 started # cat /cgroup/devices/libvirt/lxc/lxc_container_1/devices.list c 10:200 rwm <-- :-) c 1:3 rwm c 1:5 rwm c 1:7 rwm c 1:8 rwm c 1:9 rwm c 5:0 rwm c 5:2 rwm c 136:* rwm Regards, Mitsuru Kanabuchi
-----Original Message----- From: libvirt-users-bounces@redhat.com [mailto:libvirt-users-bounces@redhat.com] On Behalf Of Samuel Hassine Sent: Wednesday, January 25, 2012 8:28 PM To: libvirt-users@redhat.com Subject: [libvirt-users] How to change libvirt / cgroup interaction?
Hi there,
Do you know if there is a way to modify how libvirt interacts with the cgroup?
Because, I successfully add the /dev/net/tun support in my LXC container by doing:
echo c 10:200 rwm >> /cgroup/libvirt/lxc/instance-00000005/devices.allow
But when I restart the instance/LXC container, this option has gone.
How can I make this persistant? Is there a configuration file?
Thanks for your answers.
Best regards. Sam
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