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 _create_snap_dev(self):
LOG.debug("Virtman: creating a snapshot for the VM instance")
if self.snapshot_dev is None:
self.snapshot_dev = blockservice.findloop()
blockservice.try_linkloop(self.snapshot_dev)
if self.snapshot_with_cache:
snapshot_path = self._create_cache(self.snapshot_dev)
else:
snapshot_path = self.snapshot_dev
LOG.debug("Virtman: success! snapshot_path = %s" % snapshot_path)
return snapshot_path
def test_findloop(self):
expected_commands = ["losetup -f"]
blockservice.findloop()
self.assertEqual(expected_commands, self.cmds)