Bug 882067

Description of problem:
Cgroup fail to load cgconfig.service , and can't mount cgroup's memory by default config

Version-Release number of selected component (if applicable):
libvirt-1.0.0-1.el7.x86_64
libvirt-daemon-driver-lxc-1.0.0-1.el7.x86_64
libcgroup-0.38-3.el7.x86_64
kernel-3.6.0-0.29.el7.x86_64

How reproducible:
100%

Steps to Reproduce:
1.
#service cgconfig status
Redirecting to /bin/systemctl status  cgconfig.service
cgconfig.service - Control Group configuration service
	  Loaded: loaded (/usr/lib/systemd/system/cgconfig.service; disabled)
	  Active: active (exited) since Fri, 2012-11-30 11:15:16 CST; 3s ago
	 Process: 9940 ExecStop=/usr/sbin/cgclear -l /etc/cgconfig.conf -e (code=exited, status=0/SUCCESS)
	 Process: 9943 ExecStart=/usr/sbin/cgconfigparser -l /etc/cgconfig.conf -s 1664 (code=exited, status=0/SUCCESS)
	  CGroup: name=systemd:/system/cgconfig.service



2.
systemctl status cgroup.service
cgroup.service
	  Loaded: error (Reason: No such file or directory)
	  Active: inactive (dead)


3.
#mount | grep cgroup  
tmpfs on /sys/fs/cgroup type tmpfs (rw,nosuid,nodev,noexec,seclabel,mode=755)
cgroup on /sys/fs/cgroup/systemd type cgroup (rw,nosuid,nodev,noexec,relatime,release_agent=/usr/lib/systemd/systemd-cgroups-agent,name=systemd)
cgroup on /sys/fs/cgroup/cpuset type cgroup (rw,nosuid,nodev,noexec,relatime,cpuset)
cgroup on /sys/fs/cgroup/cpu,cpuacct type cgroup (rw,nosuid,nodev,noexec,relatime,cpuacct,cpu)
cgroup on /sys/fs/cgroup/devices type cgroup (rw,nosuid,nodev,noexec,relatime,devices)
cgroup on /sys/fs/cgroup/freezer type cgroup (rw,nosuid,nodev,noexec,relatime,freezer)
cgroup on /sys/fs/cgroup/net_cls type cgroup (rw,nosuid,nodev,noexec,relatime,net_cls)
cgroup on /sys/fs/cgroup/blkio type cgroup (rw,nosuid,nodev,noexec,relatime,blkio)
cgroup on /sys/fs/cgroup/perf_event type cgroup (rw,nosuid,nodev,noexec,relatime,perf_event)

# cat /proc/cgroups 
#subsys_name	hierarchy	num_cgroups	enabled
cpuset	2	4	1
cpu	3	38	1
cpuacct	3	38	1
devices	4	4	1
freezer	5	4	1
net_cls	6	1	1
blkio	7	4	1
perf_event	8	1	1


4.
lxc will fail to start:
virsh -c lxc:// start toy
error: Failed to start domain toy
error: internal error Unable to find 'memory' cgroups controller mount

5.
#mkdir /sys/fs/cgroup/memory
#mount -t cgroup none /sys/fs/cgroup/memory -o memory
mount: special device none does not exist

Actual results:
Cgroup fail to load config file and mount memory

Expected results:
Cgroup should work find

Additional info:
I'm not sure if these belong to one compoent  , so if anyone know which compoent it or they should be , plz help me to change it , thanks.