def delete_mapping(self, lun_id, host_name):
if host_name and len(host_name) > constants.MAX_HOSTNAME_LENGTH:
host_name = hash(host_name)
host_id = self.find_host(host_name)
if host_id:
mapping_view_name = constants.MAPPING_VIEW_PREFIX + host_id
view_id = self.find_mapping_view(mapping_view_name)
if view_id:
lungroup_id = self.find_lungroup_from_map(view_id)
# Remove lun from lungroup.
if lun_id and self.check_lun_exist(lun_id):
if lungroup_id:
lungroup_ids = self.get_lungroupids_by_lunid(lun_id)
if lungroup_id in lungroup_ids:
self.remove_lun_from_lungroup(lungroup_id, lun_id)
else:
LOG.info(('Lun is not in lungroup. '
'Lun id: %(lun_id)s. '
'lungroup id: %(lungroup_id)s.')
% {"lun_id": lun_id,
"lungroup_id": lungroup_id})
else:
LOG.error("Can't find lun on the array.")
raise VolumeBackendAPIException
def detach_volume(self, blockdevice_id):
"""
Detach ``blockdevice_id`` from whatever host it is attached to.
:param unicode blockdevice_id: The unique identifier for the block
device being detached.
:raises UnknownVolume: If the supplied ``blockdevice_id`` does not
exist.
:raises UnattachedVolume: If the supplied ``blockdevice_id`` is
not attached to anything.
:returns: ``None``
"""
LOG.info("Call detach_volume blockdevice_id=%s" % blockdevice_id)
device = self.get_device_path(blockdevice_id)
if device is not None:
huawei_utils.remove_scsi_device(device)
lun_info = self.restclient.get_lun_info(blockdevice_id)
if self.get_attached_to(lun_info) is not None:
self.restclient.delete_mapping(
blockdevice_id, self._compute_instance_id)
else:
LOG.error("Volume %s not attached." % blockdevice_id)
raise UnattachedVolume(blockdevice_id)
def do_mapping(self, lun_id, hostgroup_id, host_id, tgtportgroup_id=None):
"""Add hostgroup and lungroup to mapping view."""
lungroup_name = constants.LUNGROUP_PREFIX + host_id
mapping_view_name = constants.MAPPING_VIEW_PREFIX + host_id
lungroup_id = self._find_lungroup(lungroup_name)
view_id = self.find_mapping_view(mapping_view_name)
map_info = {}
LOG.info((
'do_mapping, lun_group: %(lun_group)s, '
'view_id: %(view_id)s, lun_id: %(lun_id)s.') %
{'lun_group': lungroup_id,
'view_id': view_id,
'lun_id': lun_id})
try:
# Create lungroup and add LUN into to lungroup.
if lungroup_id is None:
lungroup_id = self._create_lungroup(lungroup_name)
is_associated = self._is_lun_associated_to_lungroup(lungroup_id,
lun_id)
if not is_associated:
self.associate_lun_to_lungroup(lungroup_id, lun_id)
if view_id is None:
view_id = self._add_mapping_view(mapping_view_name)
self._associate_hostgroup_to_view(view_id, hostgroup_id)
self._associate_lungroup_to_view(view_id, lungroup_id)
if tgtportgroup_id:
self._associate_portgroup_to_view(view_id, tgtportgroup_id)
else:
if not self.hostgroup_associated(view_id, hostgroup_id):
self._associate_hostgroup_to_view(view_id, hostgroup_id)
if not self.lungroup_associated(view_id, lungroup_id):
self._associate_lungroup_to_view(view_id, lungroup_id)
if tgtportgroup_id:
if not self._portgroup_associated(view_id,
tgtportgroup_id):
self._associate_portgroup_to_view(view_id,
tgtportgroup_id)
version = self.find_array_version()
if version >= constants.ARRAY_VERSION:
aval_luns = self.find_view_by_id(view_id)
map_info["lun_id"] = lun_id
map_info["view_id"] = view_id
map_info["aval_luns"] = aval_luns
except Exception:
LOG.error('Error occurred when adding hostgroup and lungroup to '
'view. Remove lun from lungroup now.')
self.remove_lun_from_lungroup(lungroup_id, lun_id)
raise VolumeBackendAPIException
return map_info
def do_call(self, url=False, data=None, method=None,
calltimeout=constants.SOCKET_TIMEOUT):
"""Send requests to server.
Send HTTPS call, get response in JSON.
Convert response into Python Object and return it.
"""
if self.url:
url = self.url + url
opener = urllib2.build_opener(urllib2.HTTPCookieProcessor(self.cookie))
urllib2.install_opener(opener)
res_json = None
LOG.info(('\n\n\n\nRequest URL: %(url)s\n\n'
'Call Method: %(method)s\n\n'
'Request Data: %(data)s\n\n') % {'url': url,
'method': method,
'data': data})
try:
urllib2.socket.setdefaulttimeout(calltimeout)
req = urllib2.Request(url, data, self.headers)
if method:
req.get_method = lambda: method
res = urllib2.urlopen(req).read().decode("utf-8")
if "xx/sessions" not in url:
LOG.info(('\n\n\n\nRequest URL: %(url)s\n\n'
'Call Method: %(method)s\n\n'
'Request Data: %(data)s\n\n'
'Response Data:%(res)s\n\n')
% {'url': url, 'method': method,
'data': data, 'res': res})
except Exception as err:
LOG.error('Bad response from server: %(url)s.Error: %(err)s'
% {'url': url, 'err': err})
json_msg = ('{"error":{"code": %s,"description": "Connect to '
'server error."}}') % constants.ERROR_CONNECT_TO_SERVER
res_json = json.loads(json_msg)
return res_json
try:
res_json = json.loads(res)
except Exception as err:
LOG.error('JSON transfer error: %s.' % err.message)
raise
return res_json
def _find_alua_info(self, iscsi_conf, initiator_name):
"""Find ALUA info from xml."""
multipath_type = 0
for ini in iscsi_conf['Initiator']:
if ini['Name'] == initiator_name:
if 'ALUA' in ini:
if ini['ALUA'] != '1' and ini['ALUA'] != '0':
msg = ('Invalid ALUA value.'
'ALUA value must be 1 or 0.')
LOG.error(msg)
raise VolumeBackendAPIException
else:
multipath_type = ini['ALUA']
break
return multipath_type
def add_host_with_check(self, host_name):
host_name_before_hash = None
if host_name and (len(host_name) > constants.MAX_HOSTNAME_LENGTH):
host_name_before_hash = host_name
host_name = hash(host_name)
host_id = self.find_host(host_name)
if host_id:
LOG.info((
'add_host_with_check. '
'host name: %(name)s, '
'host id: %(id)s') %
{'name': host_name,
'id': host_id})
return host_id
try:
host_id = self._add_host(host_name, host_name_before_hash)
except Exception:
LOG.info((
'Failed to create host: %(name)s. '
'Check if it exists on the array.') %
{'name': host_name})
host_id = self.find_host(host_name)
if not host_id:
err_msg = ((
'Failed to create host: %(name)s. '
'Please check if it exists on the array.') %
{'name': host_name})
LOG.error(err_msg)
raise VolumeBackendAPIException
LOG.info((
'add_host_with_check. '
'create host success. '
'host name: %(name)s, '
'host id: %(id)s') %
{'name': host_name,
'id': host_id})
return host_id
def login(self):
"""Login array."""
login_info = self.configuration
urlstr = login_info['RestURL']
url = urlstr + "xx/sessions"
data = json.dumps({"username": login_info['UserName'],
"password": login_info['UserPassword'],
"scope": "0"})
self._init_http_head()
result = self.do_call(url, data,
calltimeout=constants.LOGIN_SOCKET_TIMEOUT)
if (result['error']['code'] != 0) or ("data" not in result):
LOG.error("Login error, reason is: %s." % result)
return None
LOG.info('Login success: %(url)s' % {'url': urlstr})
self.device_id = result['data']['deviceid']
self.url = urlstr + self.device_id
self.headers['iBaseToken'] = result['data']['iBaseToken']
return self.device_id
def create_hostgroup_with_check(self, hostgroup_name):
"""Check if host exists on the array, or create it."""
hostgroup_id = self.find_hostgroup(hostgroup_name)
if hostgroup_id:
LOG.info((
'create_hostgroup_with_check. '
'hostgroup name: %(name)s, '
'hostgroup id: %(id)s') %
{'name': hostgroup_name,
'id': hostgroup_id})
return hostgroup_id
try:
hostgroup_id = self._create_hostgroup(hostgroup_name)
except Exception:
LOG.info((
'Failed to create hostgroup: %(name)s. '
'Please check if it exists on the array.') %
{'name': hostgroup_name})
hostgroup_id = self.find_hostgroup(hostgroup_name)
if hostgroup_id is None:
err_msg = ((
'Failed to create hostgroup: %(name)s. '
'Check if it exists on the array.')
% {'name': hostgroup_name})
LOG.error(err_msg)
raise VolumeBackendAPIException
LOG.info((
'create_hostgroup_with_check. '
'Create hostgroup success. '
'hostgroup name: %(name)s, '
'hostgroup id: %(id)s') %
{'name': hostgroup_name,
'id': hostgroup_id})
return hostgroup_id
def initialize_connection_fc(self):
"""
TODO: Initialize fc connection.
"""
wwns = huawei_utils.get_fc_wwpns()
if not wwns:
raise VolumeException
# Create hostgroup if not exist.
host_id = self.restclient.add_host_with_check(
self._compute_instance_id)
online_wwns_in_host = (
self.restclient.get_host_online_fc_initiators(host_id))
online_free_wwns = self.restclient.get_online_free_wwns()
for wwn in wwns:
if (wwn not in online_wwns_in_host and
wwn not in online_free_wwns):
wwns_in_host = (
self.restclient.get_host_initiators("fc", host_id))
iqns_in_host = (
self.restclient.get_host_initiators("iscsi", host_id))
if not wwns_in_host and not iqns_in_host:
self.restclient.remove_host(host_id)
LOG.error('Can not add FC initiator to host.')
raise VolumeException
for wwn in wwns:
if wwn in online_free_wwns:
self.restclient.add_fc_port_to_host(host_id, wwn)
hostgroup_id = self.restclient.add_host_into_hostgroup(host_id)
self._host_id = host_id
self._hostgroup_id = hostgroup_id
def _assert_data_in_result(self, result, msg):
if 'data' not in result:
err_msg = ('%s "data" was not in result.' % msg)
LOG.error(err_msg)
raise VolumeBackendAPIException
def _assert_rest_result(self, result, err_str):
if result['error']['code'] != 0:
msg = ('%(err)s\nresult: %(res)s.'
% {'err': err_str, 'res': result})
LOG.error(msg)
raise VolumeBackendAPIException
