def initialize(self, service_dir):
super(LocalDiskResourceService, self).initialize(service_dir)
# Make sure LVM Volume Group set up
localdiskutils.setup_device_lvm(self._block_dev, self._vg_name)
# Finally retrieve the LV info
lvs_info = lvm.lvsdisplay(group=self._vg_name)
# Mark all retrived volumes that were created by treadmill as 'stale'
for lv in lvs_info:
lv['stale'] = lv['name'].startswith(TREADMILL_LV_PREFIX)
if lv['open_count']:
_LOGGER.warning('Logical volume in use: %r', lv['block_dev'])
# Count the number of extents taken by non-treadmill volumes
self._extent_reserved = sum(
[lv['extent_size'] for lv in lvs_info if not lv['stale']])
volumes = {
lv['name']: {
k: lv[k]
for k in [
'name',
'block_dev',
'dev_major',
'dev_minor',
'extent_size',
'stale',
]
}
for lv in lvs_info
}
self._volumes = volumes
self._vg_status = localdiskutils.refresh_vg_status(self._vg_name)
def test_lvsdisplay(self):
"""Test display of list of LVM volumes informations.
"""
treadmill.subproc.check_output.return_value = (
' /dev/test/test-lv:test:3:1:-1:0:24576:'
'3:-1:0:-1:253:5\n'
' /dev/treadmill/oRHxZN5QldMdz:treadmill:3:1:-1:1:10485760:'
'1280:-1:0:-1:253:0\n'
' /dev/treadmill/ESE0g3hyf7nxv:treadmill:3:1:-1:1:2097152:'
'256:-1:0:-1:253:1\n'
' /dev/treadmill/p8my37oRJGcd5:treadmill:3:1:-1:1:204800:'
'25:-1:0:-1:253:2\n'
' /dev/treadmill/njZhRefmf6jQp:treadmill:3:1:-1:1:1024000:'
'125:-1:0:-1:253:3\n'
' /dev/treadmill/yRImNK9cnix2T:treadmill:3:1:-1:1:204800:'
'25:-1:0:-1:253:4\n')
lvs = lvm.lvsdisplay()
treadmill.subproc.check_output.assert_called_with([
'lvm',
'lvdisplay',
'--colon',
])
self.assertEqual(lvs, [
{
'block_dev': '/dev/test/test-lv',
'dev_major': 253,
'dev_minor': 5,
'extent_alloc': -1,
'extent_size': 3,
'group': 'test',
'name': 'test-lv',
'open_count': 0,
},
{
'block_dev': '/dev/treadmill/oRHxZN5QldMdz',
'dev_major': 253,
'dev_minor': 0,
'extent_alloc': -1,
'extent_size': 1280,
'group': 'treadmill',
'name': 'oRHxZN5QldMdz',
'open_count': 1,
},
{
'block_dev': '/dev/treadmill/ESE0g3hyf7nxv',
'dev_major': 253,
'dev_minor': 1,
'extent_alloc': -1,
'extent_size': 256,
'group': 'treadmill',
'name': 'ESE0g3hyf7nxv',
'open_count': 1,
},
{
'block_dev': '/dev/treadmill/p8my37oRJGcd5',
'dev_major': 253,
'dev_minor': 2,
'extent_alloc': -1,
'extent_size': 25,
'group': 'treadmill',
'name': 'p8my37oRJGcd5',
'open_count': 1,
},
{
'block_dev': '/dev/treadmill/njZhRefmf6jQp',
'dev_major': 253,
'dev_minor': 3,
'extent_alloc': -1,
'extent_size': 125,
'group': 'treadmill',
'name': 'njZhRefmf6jQp',
'open_count': 1,
},
{
'block_dev': '/dev/treadmill/yRImNK9cnix2T',
'dev_major': 253,
'dev_minor': 4,
'extent_alloc': -1,
'extent_size': 25,
'group': 'treadmill',
'name': 'yRImNK9cnix2T',
'open_count': 1,
},
])