def connect_volume(self, target_portal, target_iqn, target_lun):
""":raises: CannotConnectISCSIVolume if volume is not available or
cannot be connected"""
connect_cmd = ('iscsiadm '
'-m node '
'-T {target_iqn} '
'-p {target_portal}').format(
target_iqn=target_iqn, target_portal=target_portal)
password = self.sudo_password
local.sudo_ignoring_errors(connect_cmd, sudo_password=password)
sessions = self.get_sessions()
if len(sessions) == 0 or not any((s.target_portal == target_portal
for s in sessions)):
try:
local.sudo(connect_cmd + ' --login', sudo_password=password)
finally:
update = ' --op update -n node.startup -v automatic'
local.sudo_ignoring_errors(connect_cmd + update)
device_path = get_device_path(target_portal, target_iqn, target_lun)
if not self._path_exists(device_path, target_portal, target_iqn):
msg = "iSCSI volume not found at {host_device}".format(
host_device=device_path)
LOG.error(msg)
raise CannotConnectISCSIVolume(msg)
return device_path
def get_sessions(self):
password = self.sudo_password
_, out = local.sudo_ignoring_errors('iscsiadm -m session',
sudo_password=password)
sessions = [VolumeParams.from_iscsiadm_string(l)
for l in out.splitlines()]
return [s for s in sessions if s is not None]
def get_sessions(self):
password = self.sudo_password
_, out = local.sudo_ignoring_errors('iscsiadm -m session',
sudo_password=password)
sessions = [
VolumeParams.from_iscsiadm_string(l) for l in out.splitlines()
]
return [s for s in sessions if s is not None]