What i did on our test environment. cggroup clear /etc/init.d/cgred stop /etc/init.d/cgconfig stop /etc/init.d/libvirtd restart And everything got back to normal. David 2012/12/13 Daniel P. Berrange <berrange@xxxxxxxxxx>: > On Thu, Dec 13, 2012 at 01:31:27PM -0700, Dax Kelson wrote: >> I have a RHEL6 that hosts many kvm virtual machines. It has been >> working fine for a couple years. I apply errata updates about once a >> week. >> >> In the last couple weeks, I've ran into a bug where the virtual >> machines start failing to start with a cgroup error message. If I >> reboot the host (very disruptive) then things start working normaly >> for a few days. > > Sounds like something has either unmounted your cgroups, or > deleted the directories that libvirt created. I wonder if the > cgconfig initscript is doing it perhaps, and getting triggered in > a %post from an RPM script. In any case, you ought not need to > reboot the host - restarting libvirtd will get it to re-create > its cgroups. > >> Can I configure qemu/libvirt not to use cgroups at all as a temporary >> workaround? How would I do that? > > Simply don't mount any on the host and libvirt won't use them. > On RHEL6, the 'cgconfig' initscript is what mounts them at boot. > > Daniel > -- > |: http://berrange.com -o- http://www.flickr.com/photos/dberrange/ :| > |: http://libvirt.org -o- http://virt-manager.org :| > |: http://autobuild.org -o- http://search.cpan.org/~danberr/ :| > |: http://entangle-photo.org -o- http://live.gnome.org/gtk-vnc :| > > _______________________________________________ > libvirt-users mailing list > libvirt-users@xxxxxxxxxx > https://www.redhat.com/mailman/listinfo/libvirt-users _______________________________________________ libvirt-users mailing list libvirt-users@xxxxxxxxxx https://www.redhat.com/mailman/listinfo/libvirt-users
