def test_detach_storage(self):
"""Detach storage from some mappings."""
# In v1wrap, all five maps are associated with LPAR 2
num_matches = 5
self.assertEqual(num_matches, len(self.v1wrap.scsi_mappings))
# Beforehand, four of them have storage and one does not.
self.assertEqual(
4,
len([
sm.backing_storage for sm in self.v1wrap.scsi_mappings
if sm.backing_storage is not None
]))
removals = scsi_mapper.detach_storage(self.v1wrap, 2)
# The number of mappings is the same afterwards.
self.assertEqual(num_matches, len(self.v1wrap.scsi_mappings))
# But now the mappings have no storage
for smap in self.v1wrap.scsi_mappings:
self.assertIsNone(smap.backing_storage)
# The return list contains all the mappings
self.assertEqual(num_matches, len(removals))
# The return list members contain the storage (the four that had it
# beforehand).
self.assertEqual(
4,
len([
sm.backing_storage for sm in removals
if sm.backing_storage is not None
]))
# In v2wrap, there are four VOptMedia mappings
num_matches = 4
match_class = pvm_stor.VOptMedia
# Number of mappings should be the same before and after.
len_before = len(self.v2wrap.scsi_mappings)
self.assertEqual(
num_matches,
len([
1 for sm in self.v2wrap.scsi_mappings
if isinstance(sm.backing_storage, match_class)
]))
removals = scsi_mapper.detach_storage(
self.v2wrap,
None,
match_func=scsi_mapper.gen_match_func(match_class))
self.assertEqual(num_matches, len(removals))
# The number of mappings is the same as beforehand.
self.assertEqual(len_before, len(self.v2wrap.scsi_mappings))
# Now there should be no mappings with VOptMedia
self.assertEqual(
0,
len([
1 for sm in self.v2wrap.scsi_mappings
if isinstance(sm.backing_storage, match_class)
]))
# The removals contain the storage
self.assertEqual(
num_matches,
len([
1 for sm in removals
if isinstance(sm.backing_storage, match_class)
]))
def detach_vopt_from_map(vios_w):
return tsk_map.detach_storage(vios_w, lpar_uuid,
match_func=match_func)