Hi,
As explained in a bug on the debian BTS[0], I'm getting the following
backtrace on my machine when trying to start a domain:
Erreur lors du démarrage du domaine: At least one cgroup controller is
required: No such device or address
Traceback (most recent call last):
File "/usr/share/virt-manager/virtManager/asyncjob.py", line 96, in cb_wrapper
callback(asyncjob, *args, **kwargs)
File "/usr/share/virt-manager/virtManager/asyncjob.py", line 117, in tmpcb
callback(*args, **kwargs)
File "/usr/share/virt-manager/virtManager/domain.py", line 1160, in startup
self._backend.create()
File "/usr/lib/python2.7/dist-packages/libvirt.py", line 697, in create
if ret == -1: raise libvirtError ('virDomainCreate() failed', dom=self)
libvirtError: At least one cgroup controller is required: No such device or
address
This is only happening when /sys/fs/cgroup/systemd is being mounted by
logind while systemd is not acting as the init system.
I've been asked by danpb to report the following information on this
mailing list:
$ cat /proc/mounts|grep cgroup
none /sys/fs/cgroup tmpfs
rw,rootcontext=system_u:object_r:sysfs_t:s0,seclabel,relatime,size=4k,mode=755
0 0
systemd /sys/fs/cgroup/systemd cgroup
rw,nosuid,nodev,noexec,relatime,name=systemd 0 0
$ cat /proc/cgroups
#subsys_name hierarchy num_cgroups enabled
cpuset 0 1 1
cpu 0 1 1
cpuacct 0 1 1
memory 0 1 0
devices 0 1 1
freezer 0 1 1
net_cls 0 1 1
blkio 0 1 1
perf_event 0 1 1
$ cat /proc/$(pidof libvirtd)/cgroup
1:name=systemd:/
I hope this will be enough to fix this issue.
Kind regards,
Laurent Bigonville
[0]http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=721979
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