#notifier.daemon = True
#notifier.start()
-def get_cgroup_paths():
- cpusetBase = os.path.join(BASE_DIR, 'cpuset', 'libvirt', 'lxc')
- return filter(os.path.isdir,
- map(lambda f: os.path.join(cpusetBase, f),
- os.listdir(cpusetBase)))
+def get_cgroup_paths(subsystem="cpuset"):
+ cpusetBases = [
+ # observed on f16-f18
+ os.path.join(BASE_DIR, subsystem, 'libvirt', 'lxc'),
+ # as observed on f20
+ os.path.join(BASE_DIR, subsystem ),
+ # as observed on f16 libvirt 1.2.1
+ os.path.join(BASE_DIR, subsystem, 'machine'),
+ ]
+ # try several locations and return all the results
+ # get_cgroup_path will sort it out
+ def merge(l1,l2): return l1+l2
+ return reduce (lambda l1,l2: l1+l2,
+ [ [ dir for dir in
+ [ os.path.join(cpusetBase, f) for f in os.listdir(cpusetBase) ]
+ if os.path.isdir(dir) ]
+ for cpusetBase in cpusetBases if os.path.isdir (cpusetBase) ])
-def get_cgroup_path(name):
+def get_cgroup_path(name, subsystem="cpuset"):
""" Returns the base path for the cgroup with a specific name or None."""
- return reduce(lambda a, b: b if os.path.basename(b) == name else a,
- get_cgroup_paths(), None)
+ result = reduce(lambda a, b: b if os.path.basename(b) == name else a,
+ get_cgroup_paths(subsystem), None)
+
+ if result is None:
+ name = name + ".libvirt-lxc"
+ result = reduce(lambda a, b: b if os.path.basename(b) == name else a,
+ get_cgroup_paths(subsystem), None)
+
+ return result
def get_base_path():
return BASE_DIR
""" Returns the list of cgroups active at this moment on the node """
return map(os.path.basename, get_cgroup_paths())
-def write(name, key, value):
+def write(name, key, value, subsystem="cpuset"):
""" Writes a value to the file key with the cgroup with name """
- base_path = get_cgroup_path(name)
+ base_path = get_cgroup_path(name, subsystem)
with open(os.path.join(base_path, key), 'w') as f:
print >>f, value
-def append(name, key, value):
+def append(name, key, value, subsystem="cpuset"):
""" Appends a value to the file key with the cgroup with name """
- base_path = get_cgroup_path(name)
+ base_path = get_cgroup_path(name, subsystem)
with open(os.path.join(base_path, key), 'a') as f:
print >>f, value