def createZygote(self,
name=None,
attribute_values=None,
snapshot=True,
host_path=None):
"""Clones a zygote from the test base container.
Use this to ensure that zygotes got properly cleaned up after each test.
@param container_path: The LXC path for the new container.
@param host_path: The host path for the new container.
@param name: The name of the new container.
@param attribute_values: Any attribute values for the new container.
@param snapshot: Whether to create a snapshot clone.
"""
if name is None:
name = self.id().split('.')[-1]
if host_path is None:
host_path = os.path.join(self.shared_host_path, name)
if attribute_values is None:
attribute_values = {}
zygote = lxc.Zygote(self.test_dir, name, attribute_values,
self.base_container, snapshot, host_path)
try:
yield zygote
finally:
if not options.skip_cleanup:
zygote.destroy()
def testFindHostMount(self):
"""Verifies that zygotes pick up the correct host dirs."""
with self.createZygote() as zygote0:
# Not a clone, this just instantiates zygote1 on top of the LXC
# container created by zygote0.
zygote1 = lxc.Zygote(container_path=zygote0.container_path,
name=zygote0.name,
attribute_values={})
# Verify that the new zygote picked up the correct host path
# from the existing LXC container.
self.assertEquals(zygote0.host_path, zygote1.host_path)
self.assertEquals(zygote0.host_path_ro, zygote1.host_path_ro)
def testDetectExistingMounts(self):
"""Verifies that host mounts are properly reconstructed.
When a Zygote is instantiated on top of an already-running container,
any previously-created bind mounts have to be detected. This enables
proper cleanup later.
"""
with lxc_utils.TempDir() as tmpdir, self.createZygote() as zygote0:
zygote0.start(wait_for_network=False)
# Create a bind mounted directory.
zygote0.mount_dir(tmpdir, 'foo')
# Create another zygote on top of the existing container.
zygote1 = lxc.Zygote(container_path=zygote0.container_path,
name=zygote0.name,
attribute_values={})
# Verify that the new zygote contains the same bind mounts.
self.assertEqual(zygote0.mounts, zygote1.mounts)