This appears to be a devices cgroup problem. Are you using libcgroup? If
so can you give is the contents of /etc/cgconfig.conf?
Can you look through /var/log/libvirt/qemu/ for any meaningful error
messages?
Also please give us the output of
cat /proc/mounts
cat /proc/cgroups
and just for a baseline
cat /proc/self/cgroup
for p in `pidof qemu`; do
cat /proc/$p/cgroup
done
for p in `pidof kvm`; do
cat /proc/$p/cgroup
done
Finally, /etc/libvirt/qemu.conf will control how it tries to
use cgroups, so please paste the contents of that file. As a
workaround, you should be able to try putting:
cgroup_controllers = [ ]
in /etc/libvirt/qemu.conf, to keep libvirt from using cgroups at
all.
** Changed in: libvirt (Ubuntu)
Status: New => Incomplete
--
problem with operations on qemu/kvm guest
https://bugs.launchpad.net/bugs/556315
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