def test_get_device_slave_knames(self):
#
# /sys/class/block/wark/slaves/foo -> ../../foo
# /sys/class/block/foo #
# should return 'bar'
cfg = OrderedDict([
('wark', ['foo']),
('foo', []),
])
device = "/dev/wark"
slaves = ["foo"]
self._prepare_mocks(device, cfg)
knames = block.get_device_slave_knames(device)
self.assertEqual(slaves, knames)
def volpath_is_iscsi(volume_path):
""" Determine if the volume_path's kname is backed by iSCSI.
Recursively check volume_path's slave devices as well in
case volume_path is a stacked block device (like LVM/MD)
returns a boolean
"""
if not volume_path:
raise ValueError("Invalid input for volume_path: '%s'", volume_path)
volume_path_slaves = get_device_slave_knames(volume_path)
LOG.debug('volume_path=%s found slaves: %s', volume_path,
volume_path_slaves)
knames = [path_to_kname(volume_path)] + volume_path_slaves
return any([kname_is_iscsi(kname) for kname in knames])
def test_get_device_slave_knames_stacked(self):
#
# /sys/class/block/wark/slaves/foo -> ../../foo
# /sys/class/block/wark/slaves/bar -> ../../bar
# /sys/class/block/foo
# /sys/class/block/bar
#
# should return ['foo', 'bar']
cfg = OrderedDict([
('wark', ['foo', 'bar']),
('foo', []),
('bar', []),
])
device = 'wark'
slaves = ['foo', 'bar']
self._prepare_mocks(device, cfg)
knames = block.get_device_slave_knames(device)
self.assertEqual(slaves, knames)
def test_get_device_slave_knames_double_stacked(self):
# /sys/class/block/wark/slaves/foo -> ../../foo
# /sys/class/block/wark/slaves/bar -> ../../bar
# /sys/class/block/foo
# /sys/class/block/bar/slaves/zip -> ../../zip
# /sys/class/block/zip
#
# mapping of device:
cfg = OrderedDict([
('wark', ['foo', 'bar']),
('foo', []),
('bar', ['zip']),
('zip', []),
])
device = 'wark'
slaves = ['foo', 'zip']
self._prepare_mocks(device, cfg)
knames = block.get_device_slave_knames(device)
self.assertEqual(slaves, knames)
