Public bug reported:
the _get_host_sysinfo_serial_os method try to read the machine-id file to get
an UUID for the host operating system.
If the file is there but it is empty the code will raise an exception while it
tries to parse the content of the file.
To reproduce the issue just add this test to the
nova/tests/unit/virt/libvirt/test_driver.py
def test_get_guest_config_sysinfo_serial_os_empty_machine_id(self):
self.flags(sysinfo_serial="os", group="libvirt")
real_open = __builtin__.open
with contextlib.nested(
mock.patch.object(__builtin__, "open"),
) as (mock_open, ):
theuuid = ""
def fake_open(filename, *args, **kwargs):
if filename == "/etc/machine-id":
h = mock.MagicMock()
h.read.return_value = theuuid
h.__enter__.return_value = h
return h
return real_open(filename, *args, **kwargs)
mock_open.side_effect = fake_open
self._test_get_guest_config_sysinfo_serial(None)
** Affects: nova
Importance: Undecided
Assignee: Andrea Rosa (andrea-rosa-m)
Status: In Progress
** Tags: low-hanging-fruit
** Changed in: nova
Assignee: (unassigned) => Andrea Rosa (andrea-rosa-m)
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https://bugs.launchpad.net/bugs/1475353
Title:
_get_host_sysinfo_serial_os fails if the machine-id file is empty
Status in OpenStack Compute (nova):
In Progress
Bug description:
the _get_host_sysinfo_serial_os method try to read the machine-id file to get
an UUID for the host operating system.
If the file is there but it is empty the code will raise an exception while
it tries to parse the content of the file.
To reproduce the issue just add this test to the
nova/tests/unit/virt/libvirt/test_driver.py
def test_get_guest_config_sysinfo_serial_os_empty_machine_id(self):
self.flags(sysinfo_serial="os", group="libvirt")
real_open = __builtin__.open
with contextlib.nested(
mock.patch.object(__builtin__, "open"),
) as (mock_open, ):
theuuid = ""
def fake_open(filename, *args, **kwargs):
if filename == "/etc/machine-id":
h = mock.MagicMock()
h.read.return_value = theuuid
h.__enter__.return_value = h
return h
return real_open(filename, *args, **kwargs)
mock_open.side_effect = fake_open
self._test_get_guest_config_sysinfo_serial(None)
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