def create_image_target(image_name, file_path, loop_dev, iqn_prefix):
"""
:returns : string
"0:info" specifies SUCCESS, info="target_id:loop_dev"
"1:info" specifies WARNING, info indicates image_name exists
"2:info" specifies WARNING, info indicates image file_path not exists
"""
LOG.debug("Virtman: Image Service: create image target started! "
"image_name = %s, file_path = %s" % (image_name, file_path))
if not image_name.startswith("volume-"):
image_name = "volume-" + image_name
if image_name in targetlist:
LOG.warn("Virtman: Image Service: Warning! image_name = %s exists! "
"Please use another name" % image_name)
return "1:" + "Virtman: Image Service: Warning! " \
"image_name = %s exists! Please use another name" \
% image_name
if not os.path.exists(file_path):
LOG.warn("Virtman: Image Service: Warning! "
"image file_path = %s not exists! Please use another "
"image file" % file_path)
return "2:" + "Virtman: Image Service: Warning!" \
"image file_path = %s not exists! Please use " \
"another image file" % file_path
if loop_dev is None:
loop_dev = blockservice.findloop()
else:
blockservice.unlinkloop(loop_dev)
blockservice.linkloop(loop_dev, file_path)
target_id = iscsi.create_iscsi_target(iqn_prefix + image_name, loop_dev)
targetlist[image_name] = target_id + ':' + loop_dev
LOG.debug("Virtman: Image Service: create image target completed! "
"image_target_id = %s loop_dev = %s"
% (target_id, loop_dev))
return "0:" + target_id + ":" + loop_dev
def _destroy_snap_dev(self):
LOG.debug("Virtman: deleting the snapshot for the VM instance")
if self.snapshot_with_cache:
self._delete_cache(self.snapshot_dev)
blockservice.unlinkloop(self.snapshot_dev)
LOG.debug("Virtman: succeed to delete snapshot!")
return True
def destroy_image_target(image_name):
"""
:returns : string
"0:info" specifies SUCCESS, info="nothing", nothing is None
"1:info" specifies WARNING, info indicates image_name not exists
"""
LOG.debug("Virtman: Image Service: remove image target started! image_name = %s" % image_name)
if not image_name.startswith("volume-"):
image_name = "volume-" + image_name
if not targetlist.has_key(image_name):
LOG.debug("Virtman: Image Service: Warning! image_name = %s not exists!" % image_name)
return "1:" + "Virtman: Image Service: Warning! image_name = %s not exists!" % image_name
nothing = iscsi.remove_iscsi_target(image_name, image_name)
blockservice.unlinkloop(targetlist[image_name].split(':')[1])
del targetlist[image_name]
LOG.debug("Virtman: Image Service: remove image target completed!")
return "0:" + str(nothing)
def test_unlinkloop(self):
expected_commands = ["losetup -d /dev/loop1"]
self.mock_object(blockservice, "is_looped", mock.Mock(side_effect=lambda x: True))
blockservice.unlinkloop("/dev/loop1")
self.assertEqual(expected_commands, self.cmds)
