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_target(self):
if self.is_local_has_image:
return
if not self.has_target:
LOG.debug("Virtman: start to create target, cache path = %s" %
self.cached_path)
if iscsi.exists(self.iqn):
self.has_target = True
else:
self.target_id = iscsi.create_iscsi_target(self.iqn,
self.cached_path)
self.has_target = True
LOG.debug("Virtman: create target complete, target id = %s" %
self.target_id)
def create_target(base_image):
"""
:type base_image: BlockDeviceBaseImage
"""
if base_image.is_local_has_image:
return
if not base_image.has_target:
LOG.debug("Virtman: start to create target, cache path = %s" %
base_image.cached_path)
if iscsi.exists(base_image.iqn):
base_image.has_target = True
else:
base_image.target_id = \
iscsi.create_iscsi_target(base_image.iqn,
base_image.cached_path)
base_image.has_target = True
LOG.debug("Virtman: create target complete, target id = %s" %
base_image.target_id)
