def create(backing_device,
name,
userid,
password,
iser_enabled,
initiator_iqns=None):
try:
rtsroot = rtslib.root.RTSRoot()
except rtslib.utils.RTSLibError:
print(_('Ensure that configfs is mounted at /sys/kernel/config.'))
raise
# Look to see if BlockStorageObject already exists
for x in rtsroot.storage_objects:
if x.name == name:
# Already exists, use this one
return
so_new = rtslib.BlockStorageObject(name=name, dev=backing_device)
target_new = rtslib.Target(rtslib.FabricModule('iscsi'), name, 'create')
tpg_new = rtslib.TPG(target_new, mode='create')
tpg_new.set_attribute('authentication', '1')
lun_new = rtslib.LUN(tpg_new, storage_object=so_new)
if initiator_iqns:
initiator_iqns = initiator_iqns.strip(' ')
for i in initiator_iqns.split(','):
acl_new = rtslib.NodeACL(tpg_new, i, mode='create')
acl_new.chap_userid = userid
acl_new.chap_password = password
rtslib.MappedLUN(acl_new, lun_new.lun, lun_new.lun)
tpg_new.enable = 1
try:
portal = rtslib.NetworkPortal(tpg_new, '0.0.0.0', 3260, mode='any')
except rtslib.utils.RTSLibError:
print(
_('Error creating NetworkPortal: ensure port 3260 '
'is not in use by another service.'))
raise
try:
if iser_enabled == 'True':
portal._set_iser(1)
except rtslib.utils.RTSLibError:
print(
_('Error enabling iSER for NetworkPortal: please ensure that '
'RDMA is supported on your iSCSI port.'))
raise
try:
rtslib.NetworkPortal(tpg_new, '::0', 3260, mode='any')
except rtslib.utils.RTSLibError:
# TODO(emh): Binding to IPv6 fails sometimes -- let pass for now.
pass
def add_initiator(target_iqn, initiator_iqn, userid, password):
target = _lookup_target(target_iqn, initiator_iqn)
tpg = target.tpgs.next() # get the first one
for acl in tpg.node_acls:
# See if this ACL configuration already exists
if acl['node_wwn'] == initiator_iqn:
# No further action required
return
acl_new = rtslib.NodeACL(tpg, initiator_iqn, mode='create')
acl_new.chap_userid = userid
acl_new.chap_password = password
rtslib.MappedLUN(acl_new, 0, tpg_lun=0)
def create_mapped_lun(iqn, iqn_initiator, lun):
"""
Map a lun to given acl.
"""
logger.info("trying to map LUN %s for %s" % (lun, iqn))
if lun in (curlun['name'] for curlun in current_attached_luns(iqn)):
if {
'lun': _get_lun_id(iqn, lun)
} in current_mapped_luns(iqn, iqn_initiator):
logger.debug("Mapped_LUN %s still exists" % lun)
else:
try:
rtslib.MappedLUN(_get_single_tpg(iqn).node_acl(iqn_initiator,
mode='lookup'),
_next_free_mapped_lun_index(
iqn, iqn_initiator),
tpg_lun=_get_lun_id(iqn, lun))
except:
raise
else:
logger.debug("LUN %s does not exists" % lun)
return None
#!/usr/bin/env python
import rtslib
i = rtslib.FabricModule("iscsi")
targets = list(i.targets)
t = targets[0]
tpg = list(t.tpgs)[0]
lun = list(tpg.luns)[0]
nodeacl = rtslib.NodeACL(tpg, sys.argv[1])
mlun = rtslib.MappedLUN(nodeacl, 0, lun)
def create(backing_device,
name,
userid,
password,
iser_enabled,
initiator_iqns=None,
portals_ips=None,
portals_port=3260):
# List of IPS that will not raise an error when they fail binding.
# Originally we will fail on all binding errors.
ips_allow_fail = ()
try:
rtsroot = rtslib.root.RTSRoot()
except rtslib.utils.RTSLibError:
print(_('Ensure that configfs is mounted at /sys/kernel/config.'))
raise
# Look to see if BlockStorageObject already exists
for x in rtsroot.storage_objects:
if x.name == name:
# Already exists, use this one
return
so_new = rtslib.BlockStorageObject(name=name, dev=backing_device)
target_new = rtslib.Target(rtslib.FabricModule('iscsi'), name, 'create')
tpg_new = rtslib.TPG(target_new, mode='create')
tpg_new.set_attribute('authentication', '1')
lun_new = rtslib.LUN(tpg_new, storage_object=so_new)
if initiator_iqns:
initiator_iqns = initiator_iqns.strip(' ')
for i in initiator_iqns.split(','):
acl_new = rtslib.NodeACL(tpg_new, i, mode='create')
acl_new.chap_userid = userid
acl_new.chap_password = password
rtslib.MappedLUN(acl_new, lun_new.lun, lun_new.lun)
tpg_new.enable = 1
# If no ips are given we'll bind to all IPv4 and v6
if not portals_ips:
portals_ips = ('0.0.0.0', '::0')
# TODO(emh): Binding to IPv6 fails sometimes -- let pass for now.
ips_allow_fail = ('::0', )
for ip in portals_ips:
try:
portal = rtslib.NetworkPortal(tpg_new,
ip,
portals_port,
mode='any')
except rtslib.utils.RTSLibError:
raise_exc = ip not in ips_allow_fail
msg_type = 'Error' if raise_exc else 'Warning'
print(
_('%(msg_type)s: creating NetworkPortal: ensure port '
'%(port)d on ip %(ip)s is not in use by another service.') %
{
'msg_type': msg_type,
'port': portals_port,
'ip': ip
})
if raise_exc:
raise
else:
try:
if iser_enabled == 'True':
portal.iser = True
except rtslib.utils.RTSLibError:
print(
_('Error enabling iSER for NetworkPortal: please ensure '
'that RDMA is supported on your iSCSI port %(port)d '
'on ip %(ip)s.') % {
'port': portals_port,
'ip': ip
})
raise