def DisableMultipath(naa):
client = MultipathClient()
with open(util.MULTIPATH_CONF, 'r') as fd:
multipath_config_string = fd.read()
_config = config.Configuration.from_multipathd_conf(
multipath_config_string)
# delete whitelist wwid
white_list = _config.whitelist.wwid
multipath_list = _config.multipaths
# check naa
if ('"%s"' % naa) not in white_list:
raise store_exception.StoreInvalidException(naa)
white_list.remove('"%s"' % naa)
# delete multipath section if have
for multipath in multipath_list:
if naa == multipath.wwid.strip('"'):
multipath_list.remove(multipath)
break
# reconfigure
client.write_to_multipathd_conf(_config)
util.StoreCmdRun("%s reconfigure" % util.MULTIPATHD)
logging.info("Naa %s is disable multipath." % naa)
def SetPolicy(naa, policy):
client = MultipathClient()
with open(util.MULTIPATH_CONF, 'r') as fd:
multipath_config_string = fd.read()
_config = config.Configuration.from_multipathd_conf(
multipath_config_string)
white_list = _config.whitelist.wwid
multipath_list = _config.multipaths
# check naa
if ('"%s"' % naa) not in white_list:
raise store_exception.StoreInvalidException(naa)
# delete old multipath section
for multipath in multipath_list:
if naa == multipath.wwid.strip('"'):
multipath_list.remove(multipath)
break
# new multipath section
new_section = config.MultipathEntry()
if policy == adp_pb2.DEFAULT:
logging.info("Naa %s policy change to DEFAULT." % naa)
if policy == adp_pb2.RECENTLY_USED:
new_section.wwid = '"%s"' % naa
new_section.path_grouping_policy = '"failover"'
new_section.failback = '"manual"'
multipath_list.append(new_section)
logging.info("Naa %s policy change to RECENTLY_USED." % naa)
if policy == adp_pb2.FIXED:
new_section.wwid = '"%s"' % naa
new_section.path_grouping_policy = '"failover"'
new_section.failback = '"immediate"'
multipath_list.append(new_section)
logging.info("Naa %s policy change to FIXED." % naa)
if policy == adp_pb2.LOOP:
new_section.wwid = '"%s"' % naa
new_section.path_grouping_policy = '"multibus"'
multipath_list.append(new_section)
logging.info("Naa %s policy change to LOOP." % naa)
if policy == adp_pb2.OPTIMAL:
new_section.wwid = '"%s"' % naa
new_section.path_grouping_policy = '"group_by_prio"'
new_section.prio = '"alua"'
new_section.failback = '"immediate"'
multipath_list.append(new_section)
logging.info("Naa %s policy change to OPTIMAL." % naa)
# reconfigure
client.write_to_multipathd_conf(_config)
util.StoreCmdRun("%s reconfigure" % util.MULTIPATHD)
def GetMultipathJson():
client = MultipathClient()
json_string = ''
try:
json_string = client._send_and_receive("show multipaths json")
except errors.TimeoutExpired:
logging.error(traceback.format_exc())
except errors.ConnectionError:
logging.error(traceback.format_exc())
finally:
return json_string
def SetDefaultConfig():
# get default_multipath.conf
client = MultipathClient()
with open(DEFAULT_CONFIG, 'r') as fd:
default_config_string = fd.read()
logging.info("default_config_string is %s" % default_config_string)
default_config = config.Configuration.from_multipathd_conf(
default_config_string)
# write to /etc/multipath.conf
client.write_to_multipathd_conf(default_config)
# reconfigure
util.StoreCmdRun("%s reconfigure " % util.MULTIPATHD)
def EnableMultipath(naa):
client = MultipathClient()
with open(util.MULTIPATH_CONF, 'r') as fd:
multipath_config_string = fd.read()
_config = config.Configuration.from_multipathd_conf(
multipath_config_string)
# check naa
if ('"%s"' % naa) in _config.whitelist.wwid:
logging.info('naa %s is already set multipath.' % naa)
else:
_config.whitelist.wwid.append('"%s"' % naa)
client.write_to_multipathd_conf(_config)
# reconfigure
util.StoreCmdRun("%s reconfigure" % util.MULTIPATHD)
logging.info("Naa %s is enable multipath." % naa)
def _GetConfigByMultipathd():
'''
get config by multipathd
'''
m_config = config.Configuration()
client = MultipathClient()
flag = False
try:
m_config = client.get_multipathd_conf()
return m_config
except errors.TimeoutExpired:
flag = True
logging.error(traceback.format_exc())
except errors.ConnectionError:
flag = True
logging.error(traceback.format_exc())
finally:
if flag:
raise store_exception.StoreMultipathdException(
"Multipatd Exception.")
def get_all_multipath_block_devices(self):
from infi.multipathtools import MultipathClient
from infi.multipathtools.connection import UnixDomainSocket
client = MultipathClient(UnixDomainSocket(timeout=120))
if not client.is_running():
logger.warning("multipathd is not running")
return []
devices = self._get_list_of_active_devices(client)
result = []
logger.debug("Got {} devices from multipath client".format(
len(devices)))
for mpath_device in devices:
block_dev = self.sysfs.find_block_device_by_devno(
mpath_device.major_minor)
if block_dev is not None:
result.append(
LinuxNativeMultipathBlockDevice(self.sysfs, block_dev,
mpath_device))
living_devices = [
device for device in result
if device._is_there_atleast_one_path_up()
]
return living_devices