def delete_target(self, target_iqn):
target = GWTarget(self.logger, target_iqn, {})
if target.error:
raise CephiSCSIError("Could not initialize target: {}".
format(target.error_msg))
target.load_config()
if target.error:
self.logger.debug("Could not find target {}: {}".
format(target_iqn, target.error_msg))
# Target might not be setup on this node. Ignore.
return
try:
target.delete(self.config)
except RTSLibError as err:
err_msg = "Could not remove target {}: {}".format(target_iqn, err)
raise CephiSCSIError(err_msg)
def define_target(self, target_iqn, gw_ip_list, target_only=False):
"""
define the iSCSI target and tpgs
:param target_iqn: (str) target iqn
:param gw_ip_list: (list) gateway ip list
:param target_only: (bool) if True only setup target
:return: (object) GWTarget object
"""
# GWTarget Definition : Handle the creation of the Target/TPG(s) and
# Portals. Although we create the tpgs, we flick the enable_portal flag
# off so the enabled tpg will not have an outside IP address. This
# prevents clients from logging in too early, failing and giving up
# because the nodeACL hasn't been defined yet (yes Windows I'm looking
# at you!)
# first check if there are tpgs already in LIO (True) - this would
# indicate a restart or reload call has been made. If the tpg count is
# 0, this is a boot time request
self.logger.info("Setting up {}".format(target_iqn))
target = GWTarget(self.logger, target_iqn, gw_ip_list,
enable_portal=self.portals_active(target_iqn))
if target.error:
raise CephiSCSIError("Error initializing iSCSI target: "
"{}".format(target.error_msg))
target.manage('target')
if target.error:
raise CephiSCSIError("Error creating the iSCSI target (target, "
"TPGs, Portals): {}".format(target.error_msg))
if not target_only:
self.logger.info("Processing LUN configuration")
try:
LUN.define_luns(self.logger, self.config, target)
except CephiSCSIError as err:
self.logger.error("{} - Could not define LUNs: "
"{}".format(target.iqn, err))
raise
self.logger.info("{} - Processing client configuration".
format(target.iqn))
try:
GWClient.define_clients(self.logger, self.config, target.iqn)
except CephiSCSIError as err:
self.logger.error("Could not define clients: {}".format(err))
raise
if not target.enable_portal:
# The tpgs, luns and clients are all defined, but the active tpg
# doesn't have an IP bound to it yet (due to the
# enable_portals=False setting above)
self.logger.info("{} - Adding the IP to the enabled tpg, "
"allowing iSCSI logins".format(target.iqn))
target.enable_active_tpg(self.config)
if target.error:
raise CephiSCSIError("{} - Error enabling the IP with the "
"active TPG: {}".format(target.iqn,
target.error_msg))
return target
def activate(self):
disk = self.config.config['disks'].get(self.config_key, None)
if not disk:
raise CephiSCSIError("Image {} not found.".format(self.image))
wwn = disk.get('wwn', None)
if not wwn:
raise CephiSCSIError("LUN {} missing wwn".format(self.image))
# re-add backend storage object
so = self.lio_stg_object()
if not so:
so = self.add_dev_to_lio(wwn)
if self.error:
raise CephiSCSIError("LUN activate failure - {}".format(
self.error_msg))
# re-add LUN to target
local_gw = this_host()
targets_items = [
item for item in self.config.config['targets'].items()
if self.config_key in item[1]['disks']
and local_gw in item[1]['portals']
]
for target_iqn, target in targets_items:
ip_list = target['ip_list']
# Add the mapping for the lun to ensure the block device is
# present on all TPG's
gateway = GWTarget(self.logger, target_iqn, ip_list)
gateway.map_lun(self.config, so)
if gateway.error:
raise CephiSCSIError("LUN mapping failed - {}".format(
gateway.error_msg))
# re-map LUN to hosts
client_err = ''
for client_iqn in target['clients']:
client_metadata = target['clients'][client_iqn]
if client_metadata.get('group_name', ''):
continue
image_list = list(client_metadata['luns'].keys())
if self.config_key not in image_list:
continue
client_auth_config = client_metadata['auth']
client_chap = CHAP(
client_auth_config['username'],
client_auth_config['password'],
client_auth_config['password_encryption_enabled'])
if client_chap.error:
raise CephiSCSIError("Password decode issue : "
"{}".format(client_chap.error_msg))
client_chap_mutual = CHAP(
client_auth_config['mutual_username'],
client_auth_config['mutual_password'],
client_auth_config['mutual_password_encryption_enabled'])
if client_chap_mutual.error:
raise CephiSCSIError("Password decode issue : "
"{}".format(
client_chap_mutual.error_msg))
client = GWClient(self.logger, client_iqn, image_list,
client_chap.user, client_chap.password,
client_chap_mutual.user,
client_chap_mutual.password, target_iqn)
client.manage('present')
if client.error:
client_err = "LUN mapping failed {} - {}".format(
client_iqn, client.error_msg)
# re-map LUN to host groups
for group_name in target['groups']:
host_group = target['groups'][group_name]
members = host_group.get('members')
disks = host_group.get('disks').keys()
if self.config_key not in disks:
continue
group = Group(self.logger, target_iqn, group_name, members,
disks)
group.apply()
if group.error:
client_err = "LUN mapping failed {} - {}".format(
group_name, group.error_msg)
if client_err:
raise CephiSCSIError(client_err)
