def ui_command_create(self,
mapped_lun,
tpg_lun_or_backstore,
write_protect=None):
'''
Creates a mapping to one of the TPG LUNs for the initiator referenced
by the ACL. The provided I{tpg_lun_or_backstore} will appear to that
initiator as LUN I{mapped_lun}. If the I{write_protect} flag is set to
B{1}, the initiator will not have write access to the Mapped LUN.
A storage object may also be given for the I{tpg_lun_or_backstore} parameter,
in which case the TPG LUN will be created for that backstore before
mapping the LUN to the initiator. If a TPG LUN for the backstore already
exists, the Mapped LUN will map to that TPG LUN.
SEE ALSO
========
B{delete}
'''
self.assert_root()
try:
mapped_lun = int(mapped_lun)
except ValueError:
self.shell.log.error("mapped_lun must be an integer")
return
try:
if tpg_lun_or_backstore.startswith("lun"):
tpg_lun_or_backstore = tpg_lun_or_backstore[3:]
tpg_lun = int(tpg_lun_or_backstore)
except ValueError:
try:
so = self.get_node(tpg_lun_or_backstore).rtsnode
except ValueError:
self.shell.log.error("LUN or storage object not found")
return
ui_tpg = self.parent.parent
for lun in ui_tpg.rtsnode.luns:
if so == lun.storage_object:
tpg_lun = lun.lun
break
else:
lun_object = LUN(ui_tpg.rtsnode, storage_object=so)
self.shell.log.info("Created LUN %s." % lun_object.lun)
ui_lun = UILUN(lun_object, ui_tpg.get_node("luns"))
tpg_lun = ui_lun.rtsnode.lun
if tpg_lun in (ml.tpg_lun.lun for ml in self.rtsnodes[0].mapped_luns):
self.shell.log.warning(
"Warning: TPG LUN %d already mapped to this NodeACL" % tpg_lun)
for na in self.rtsnodes:
mlun = MappedLUN(na, mapped_lun, tpg_lun, write_protect)
ui_mlun = UIMappedLUN(mlun, self)
self.shell.log.info("Created Mapped LUN %s." % mlun.mapped_lun)
return self.new_node(ui_mlun)
def ui_command_delete(self, lun):
"""
Deletes the supplied LUN from the Target Portal Group. The I{lun} must
be a positive number matching an existing LUN.
Alternatively, the syntax I{lunX} where I{X} is a positive number is
also accepted.
SEE ALSO
========
B{create}
"""
self.assert_root()
if lun.lower().startswith("lun"):
lun = lun[3:]
try:
lun_object = LUN(self.tpg, lun)
except:
raise RTSLibError("Invalid LUN")
lun_object.delete()
self.shell.log.info("Deleted LUN %s." % lun)
# Refresh the TPG as we need to also refresh acls MappedLUNs
self.parent.refresh()
def ui_command_delete(self, lun):
'''
Deletes the supplied LUN from the Target Portal Group. The I{lun} must
be a positive number matching an existing LUN.
Alternatively, the syntax I{lunX} where I{X} is a positive number is
also accepted.
SEE ALSO
========
B{create}
'''
self.assert_root()
if lun.lower().startswith("lun"):
lun = lun[3:]
try:
lun_object = LUN(self.tpg, lun)
except:
raise RTSLibError("Invalid LUN")
lun_object.delete()
self.shell.log.info("Deleted LUN %s." % lun)
# Refresh the TPG as we need to also refresh acls MappedLUNs
self.parent.refresh()
def apply_delete_obj(obj):
'''
Deletes an object from the live system.
'''
# TODO Factorize this when stable
# TODO storage fabric cannot be deleted from the system, find a way to
# handle this when i.e. path 'storage fileio' is in current config, but
# no objects are hanging under it.
root = get_root()
log.debug("apply_delete(%s)" % obj.data)
if obj.key[0] == 'mapped_lun':
acl = obj.parent
if acl.parent.key[0] == 'tpgt':
tpg = acl.parent
target = tpg.parent
else:
tpg = None
target = acl.parent
fabric = target.parent
lio_fabric = FabricModule(fabric.key[1])
lio_target = Target(lio_fabric, wwn=target.key[1], mode='lookup')
if tpg is None:
tpgt = 1
else:
tpgt = int(tpg.key[1])
lio_tpg = TPG(lio_target, tpgt, mode='lookup')
node_wwn = acl.key[1]
lio_acl = NodeACL(lio_tpg, node_wwn, mode='lookup')
mlun = int(obj.key[1])
lio_mlun = MappedLUN(lio_acl, mlun)
lio_mlun.delete()
elif obj.key[0] == 'acl':
if obj.parent.key[0] == 'tpgt':
tpg = obj.parent
target = tpg.parent
else:
tpg = None
target = obj.parent
fabric = target.parent
lio_fabric = FabricModule(fabric.key[1])
lio_target = Target(lio_fabric, wwn=target.key[1], mode='lookup')
if tpg is None:
tpgt = 1
else:
tpgt = int(tpg.key[1])
lio_tpg = TPG(lio_target, tpgt, mode='lookup')
node_wwn = obj.key[1]
lio_acl = NodeACL(lio_tpg, node_wwn, mode='lookup')
lio_acl.delete()
elif obj.key[0] == 'portal':
if obj.parent.key[0] == 'tpgt':
tpg = obj.parent
target = tpg.parent
else:
tpg = None
target = obj.parent
fabric = target.parent
lio_fabric = FabricModule(fabric.key[1])
lio_target = Target(lio_fabric, wwn=target.key[1], mode='lookup')
if tpg is None:
tpgt = 1
else:
tpgt = int(tpg.key[1])
lio_tpg = TPG(lio_target, tpgt, mode='lookup')
(address, _, port) = obj.key[1].partition(':')
port = int(port)
lio_portal = NetworkPortal(lio_tpg, address, port, mode='lookup')
lio_portal.delete()
elif obj.key[0] == 'lun':
if obj.parent.key[0] == 'tpgt':
tpg = obj.parent
target = tpg.parent
else:
tpg = None
target = obj.parent
fabric = target.parent
lio_fabric = FabricModule(fabric.key[1])
lio_target = Target(lio_fabric, wwn=target.key[1], mode='lookup')
if tpg is None:
tpgt = 1
else:
tpgt = int(tpg.key[1])
lio_tpg = TPG(lio_target, tpgt, mode='lookup')
lun = int(obj.key[1])
lio_lun = LUN(lio_tpg, lun)
lio_lun.delete()
elif obj.key[0] == 'tpgt':
target = obj.parent
fabric = target.parent
lio_fabric = FabricModule(fabric.key[1])
lio_target = Target(lio_fabric, wwn=target.key[1], mode='lookup')
tpgt = int(obj.key[1])
lio_tpg = TPG(lio_target, tpgt, mode='lookup')
# FIXME IS this really needed ?
lio_tpg.enable = True
lio_tpg.delete()
elif obj.key[0] == 'target':
fabric = obj.parent
wwn = obj.key[1]
lio_fabric = FabricModule(fabric.key[1])
lio_target = Target(lio_fabric, wwn=wwn, mode='lookup')
lio_target.delete()
elif obj.key[0] == 'disk':
plugin = obj.parent.key[1]
name = obj.key[1]
matching_lio_so = [
so for so in root.storage_objects
if so.backstore.plugin == plugin and so.name == name
]
log.debug("Looking for storage object %s in %s" %
(obj.path_str,
str([
"%s/%s" % (so.backstore.plugin, so.name)
for so in root.storage_objects
])))
if len(matching_lio_so) > 1:
raise ConfigError("Detected unsupported configfs storage objects "
"allocation schema for storage object '%s'" %
obj.path_str)
elif len(matching_lio_so) == 0:
raise ConfigError("Could not find storage object '%s'" %
obj.path_str)
else:
lio_so = matching_lio_so[0]
lio_so.delete()
def apply_create_obj(obj):
'''
Creates an object on the live system.
'''
# TODO Factorize this when stable, merging it with update and delete,
# leveraging rtslib 'any' mode (create if not exist)
# TODO storage
root = get_root()
log.debug("apply_create(%s)" % obj.data)
if obj.key[0] == 'mapped_lun':
acl = obj.parent
if acl.parent.key[0] == 'tpgt':
tpg = acl.parent
target = tpg.parent
else:
tpg = None
target = acl.parent
fabric = target.parent
lio_fabric = FabricModule(fabric.key[1])
lio_target = Target(lio_fabric, wwn=target.key[1], mode='lookup')
if tpg is None:
tpgt = 1
else:
tpgt = int(tpg.key[1])
lio_tpg = TPG(lio_target, tpgt, mode='lookup')
node_wwn = acl.key[1]
lio_acl = NodeACL(lio_tpg, node_wwn, mode='lookup')
mlun = int(obj.key[1])
write_protect = obj_attr(obj, "write_protect")
tpg_lun = int(obj_attr(obj, "target_lun").rpartition(' ')[2])
lio_mlun = MappedLUN(lio_acl, mlun, tpg_lun, write_protect)
apply_group_attrs(obj, lio_mlun)
elif obj.key[0] == 'acl':
if obj.parent.key[0] == 'tpgt':
tpg = obj.parent
target = tpg.parent
else:
tpg = None
target = obj.parent
fabric = target.parent
lio_fabric = FabricModule(fabric.key[1])
lio_target = Target(lio_fabric, wwn=target.key[1], mode='lookup')
if tpg is None:
tpgt = 1
else:
tpgt = int(tpg.key[1])
lio_tpg = TPG(lio_target, tpgt, mode='lookup')
node_wwn = obj.key[1]
lio_acl = NodeACL(lio_tpg, node_wwn)
apply_group_attrs(obj, lio_acl)
elif obj.key[0] == 'portal':
if obj.parent.key[0] == 'tpgt':
tpg = obj.parent
target = tpg.parent
else:
tpg = None
target = obj.parent
fabric = target.parent
lio_fabric = FabricModule(fabric.key[1])
lio_target = Target(lio_fabric, wwn=target.key[1], mode='lookup')
if tpg is None:
tpgt = 1
else:
tpgt = int(tpg.key[1])
lio_tpg = TPG(lio_target, tpgt, mode='lookup')
(address, _, port) = obj.key[1].partition(':')
port = int(port)
lio_portal = NetworkPortal(lio_tpg, address, port)
apply_group_attrs(obj, lio_portal)
elif obj.key[0] == 'lun':
if obj.parent.key[0] == 'tpgt':
tpg = obj.parent
target = tpg.parent
else:
tpg = None
target = obj.parent
fabric = target.parent
lio_fabric = FabricModule(fabric.key[1])
lio_target = Target(lio_fabric, wwn=target.key[1], mode='lookup')
if tpg is None:
tpgt = 1
else:
tpgt = int(tpg.key[1])
lio_tpg = TPG(lio_target, tpgt, mode='lookup')
lun = int(obj.key[1])
(plugin, name) = obj_attr(obj, "backend")
# TODO move that to a separate function, use for disk too
matching_lio_so = [
so for so in root.storage_objects
if so.backstore.plugin == plugin and so.name == name
]
if len(matching_lio_so) > 1:
raise ConfigError("Detected unsupported configfs storage objects "
"allocation schema for storage object '%s'" %
obj.path_str)
elif len(matching_lio_so) == 0:
raise ConfigError(
"Could not find storage object '%s %s' for '%s'" %
(plugin, name, obj.path_str))
else:
lio_so = matching_lio_so[0]
lio_lun = LUN(lio_tpg, lun, lio_so)
apply_group_attrs(obj, lio_lun)
elif obj.key[0] == 'tpgt':
target = obj.parent
fabric = target.parent
has_enable = len(obj.search([("enable", ".*")])) != 0
if has_enable:
enable = obj_attr(obj, "enable")
lio_fabric = FabricModule(fabric.key[1])
lio_target = Target(lio_fabric, wwn=target.key[1], mode='lookup')
tpgt = int(obj.key[1])
try:
nexus_wwn = obj_attr(obj, "nexus_wwn")
lio_tpg = TPG(lio_target, tpgt, nexus_wwn=nexus_wwn)
except ConfigError:
lio_tpg = TPG(lio_target, tpgt)
if has_enable:
lio_tpg.enable = enable
apply_group_attrs(obj, lio_tpg)
elif obj.key[0] == 'target':
fabric = obj.parent
wwn = obj.key[1]
lio_fabric = FabricModule(fabric.key[1])
lio_target = Target(lio_fabric, wwn=wwn)
apply_group_attrs(obj, lio_target)
if not lio_target.has_feature("tpgts"):
try:
nexus_wwn = obj_attr(obj, "nexus_wwn")
lio_tpg = TPG(lio_target, 1, nexus_wwn=nexus_wwn)
except ConfigError:
lio_tpg = TPG(lio_target, 1)
if len(obj.search([("enable", ".*")])) != 0:
lio_tpg.enable = True
elif obj.key[0] == 'fabric':
lio_fabric = FabricModule(obj.key[1])
apply_group_attrs(obj, lio_fabric)
elif obj.key[0] == 'disk':
plugin = obj.parent.key[1]
name = obj.key[1]
idx = max([0] +
[b.index for b in root.backstores if b.plugin == plugin]) + 1
if plugin == 'fileio':
dev = obj_attr(obj, "path")
size = obj_attr(obj, "size")
try:
wwn = obj_attr(obj, "wwn")
except ConfigError:
wwn = None
buffered = obj_attr(obj, "buffered")
lio_bs = FileIOBackstore(idx)
lio_so = lio_bs.storage_object(name, dev, size, wwn, buffered)
apply_group_attrs(obj, lio_so)
elif plugin == 'iblock':
# TODO Add policy for iblock
lio_bs = IBlockBackstore(idx)
dev = obj_attr(obj, "path")
wwn = obj_attr(obj, "wwn")
lio_so = lio_bs.storage_object(name, dev, wwn)
apply_group_attrs(obj, lio_so)
elif plugin == 'pscsi':
# TODO Add policy for pscsi
lio_bs = PSCSIBackstore(idx)
dev = obj_attr(obj, "path")
lio_so = lio_bs.storage_object(name, dev)
apply_group_attrs(obj, lio_so)
elif plugin == 'rd_mcp':
# TODO Add policy for rd_mcp
lio_bs = RDMCPBackstore(idx)
size = obj_attr(obj, "size")
wwn = obj_attr(obj, "wwn")
nullio = obj_attr(obj, "nullio")
lio_so = lio_bs.storage_object(name, size, wwn, nullio)
apply_group_attrs(obj, lio_so)
else:
raise ConfigError("Unknown backend '%s' for backstore '%s'" %
(plugin, obj))
matching_lio_so = [
so for so in root.storage_objects
if so.backstore.plugin == plugin and so.name == name
]
if len(matching_lio_so) > 1:
raise ConfigError("Detected unsupported configfs storage objects "
"allocation schema for '%s'" % obj.path_str)
elif len(matching_lio_so) == 0:
raise ConfigError("Could not find backstore '%s'" % obj.path_str)
else:
lio_so = matching_lio_so[0]
def ui_command_create(self,
storage_object,
lun=None,
add_mapped_luns=None):
'''
Creates a new LUN in the Target Portal Group, attached to a storage
object. If the I{lun} parameter is omitted, the first available LUN in
the TPG will be used. If present, it must be a number greater than 0.
Alternatively, the syntax I{lunX} where I{X} is a positive number is
also accepted.
The I{storage_object} must be the path of an existing storage object,
i.e. B{/backstore/pscsi0/mydisk} to reference the B{mydisk} storage
object of the virtual HBA B{pscsi0}.
If I{add_mapped_luns} is omitted, the global parameter
B{auto_add_mapped_luns} will be used, else B{true} or B{false} are
accepted. If B{true}, then after creating the LUN, mapped LUNs will be
automatically created for all existing node ACLs, mapping the new LUN.
SEE ALSO
========
B{delete}
'''
self.assert_root()
add_mapped_luns = \
self.ui_eval_param(add_mapped_luns, 'bool',
self.shell.prefs['auto_add_mapped_luns'])
try:
so = self.get_node(storage_object).rtsnode
except ValueError:
self.shell.log.error("Invalid storage object %s." % storage_object)
return
if so in (l.storage_object for l in self.parent.rtsnode.luns):
raise ExecutionError("lun for storage object %s already exists" \
% storage_object)
if lun and lun.lower().startswith('lun'):
lun = lun[3:]
lun_object = LUN(self.tpg, lun, so)
self.shell.log.info("Created LUN %s." % lun_object.lun)
ui_lun = UILUN(lun_object, self)
if add_mapped_luns:
for acl in self.tpg.node_acls:
if lun:
mapped_lun = lun
else:
mapped_lun = 0
existing_mluns = [mlun.mapped_lun for mlun in acl.mapped_luns]
if mapped_lun in existing_mluns:
mapped_lun = None
for possible_mlun in xrange(LUN.MAX_LUN):
if possible_mlun not in existing_mluns:
mapped_lun = possible_mlun
break
if mapped_lun == None:
self.shell.log.warning(
"Cannot map new lun %s into ACL %s" %
(lun_object.lun, acl.node_wwn))
else:
mlun = MappedLUN(acl,
mapped_lun,
lun_object,
write_protect=False)
self.shell.log.info(
"Created LUN %d->%d mapping in node ACL %s" %
(mlun.tpg_lun.lun, mlun.mapped_lun, acl.node_wwn))
self.parent.refresh()
return self.new_node(ui_lun)
def ui_command_create(self,
mapped_lun,
tpg_lun_or_backstore,
write_protect=None):
'''
Creates a mapping to one of the TPG LUNs for the initiator referenced
by the ACL. The provided I{tpg_lun_or_backstore} will appear to that
initiator as LUN I{mapped_lun}. If the I{write_protect} flag is set to
B{1}, the initiator will not have write access to the Mapped LUN.
A storage object may also be given for the I{tpg_lun_or_backstore} parameter,
in which case the TPG LUN will be created for that backstore before
mapping the LUN to the initiator. If a TPG LUN for the backstore already
exists, the Mapped LUN will map to that TPG LUN.
Finally, a path to an existing block device or file can be given. If so,
a storage object of the appropriate type is created with default parameters,
followed by the TPG LUN and the Mapped LUN.
SEE ALSO
========
B{delete}
'''
self.assert_root()
try:
mapped_lun = int(mapped_lun)
except ValueError:
raise ExecutionError("mapped_lun must be an integer")
try:
if tpg_lun_or_backstore.startswith("lun"):
tpg_lun_or_backstore = tpg_lun_or_backstore[3:]
tpg_lun = int(tpg_lun_or_backstore)
except ValueError:
try:
so = self.get_node(tpg_lun_or_backstore).rtsnode
except ValueError:
try:
so = StorageObjectFactory(tpg_lun_or_backstore)
self.shell.log.info("Created storage object %s." % so.name)
except RTSLibError:
raise ExecutionError(
"LUN, storage object, or path not valid")
self.get_node("/backstores").refresh()
ui_tpg = self.parent.parent
for lun in ui_tpg.rtsnode.luns:
if so == lun.storage_object:
tpg_lun = lun.lun
break
else:
lun_object = LUN(ui_tpg.rtsnode, storage_object=so)
self.shell.log.info("Created LUN %s." % lun_object.lun)
ui_lun = UILUN(lun_object, ui_tpg.get_node("luns"))
tpg_lun = ui_lun.rtsnode.lun
if tpg_lun in (ml.tpg_lun.lun for ml in self.rtsnodes[0].mapped_luns):
self.shell.log.warning(
"Warning: TPG LUN %d already mapped to this NodeACL" % tpg_lun)
for na in self.rtsnodes:
mlun = MappedLUN(na, mapped_lun, tpg_lun, write_protect)
ui_mlun = UIMappedLUN(mlun, self)
self.shell.log.info("Created Mapped LUN %s." % mlun.mapped_lun)
return self.new_node(ui_mlun)
def apply_delete_obj(obj):
'''
Deletes an object from the live system.
'''
# TODO Factorize this when stable
# TODO storage fabric cannot be deleted from the system, find a way to
# handle this when i.e. path 'storage fileio' is in current config, but
# no objects are hanging under it.
root = get_root()
log.debug("apply_delete(%s)" % obj.data)
if obj.key[0] == 'mapped_lun':
acl = obj.parent
if acl.parent.key[0] == 'tpgt':
tpg = acl.parent
target = tpg.parent
else:
tpg = None
target = acl.parent
fabric = target.parent
lio_fabric = FabricModule(fabric.key[1])
lio_target = Target(lio_fabric, wwn=target.key[1], mode='lookup')
if tpg is None:
tpgt = 1
else:
tpgt = int(tpg.key[1])
lio_tpg = TPG(lio_target, tpgt, mode='lookup')
node_wwn = acl.key[1]
lio_acl = NodeACL(lio_tpg, node_wwn, mode='lookup')
mlun = int(obj.key[1])
lio_mlun = MappedLUN(lio_acl, mlun)
lio_mlun.delete()
elif obj.key[0] == 'acl':
if obj.parent.key[0] == 'tpgt':
tpg = obj.parent
target = tpg.parent
else:
tpg = None
target = obj.parent
fabric = target.parent
lio_fabric = FabricModule(fabric.key[1])
lio_target = Target(lio_fabric, wwn=target.key[1], mode='lookup')
if tpg is None:
tpgt = 1
else:
tpgt = int(tpg.key[1])
lio_tpg = TPG(lio_target, tpgt, mode='lookup')
node_wwn = obj.key[1]
lio_acl = NodeACL(lio_tpg, node_wwn, mode='lookup')
lio_acl.delete()
elif obj.key[0] == 'portal':
if obj.parent.key[0] == 'tpgt':
tpg = obj.parent
target = tpg.parent
else:
tpg = None
target = obj.parent
fabric = target.parent
lio_fabric = FabricModule(fabric.key[1])
lio_target = Target(lio_fabric, wwn=target.key[1], mode='lookup')
if tpg is None:
tpgt = 1
else:
tpgt = int(tpg.key[1])
lio_tpg = TPG(lio_target, tpgt, mode='lookup')
(address, _, port) = obj.key[1].partition(':')
port = int(port)
lio_portal = NetworkPortal(lio_tpg, address, port, mode='lookup')
lio_portal.delete()
elif obj.key[0] == 'lun':
if obj.parent.key[0] == 'tpgt':
tpg = obj.parent
target = tpg.parent
else:
tpg = None
target = obj.parent
fabric = target.parent
lio_fabric = FabricModule(fabric.key[1])
lio_target = Target(lio_fabric, wwn=target.key[1], mode='lookup')
if tpg is None:
tpgt = 1
else:
tpgt = int(tpg.key[1])
lio_tpg = TPG(lio_target, tpgt, mode='lookup')
lun = int(obj.key[1])
lio_lun = LUN(lio_tpg, lun)
lio_lun.delete()
elif obj.key[0] == 'tpgt':
target = obj.parent
fabric = target.parent
lio_fabric = FabricModule(fabric.key[1])
lio_target = Target(lio_fabric, wwn=target.key[1], mode='lookup')
tpgt = int(obj.key[1])
lio_tpg = TPG(lio_target, tpgt, mode='lookup')
# FIXME IS this really needed ?
lio_tpg.enable = True
lio_tpg.delete()
elif obj.key[0] == 'target':
fabric = obj.parent
wwn = obj.key[1]
lio_fabric = FabricModule(fabric.key[1])
lio_target = Target(lio_fabric, wwn=wwn, mode='lookup')
lio_target.delete()
elif obj.key[0] == 'disk':
plugin = obj.parent.key[1]
name = obj.key[1]
matching_lio_so = [so for so in root.storage_objects if
so.backstore.plugin == plugin and so.name == name]
log.debug("Looking for storage object %s in %s"
% (obj.path_str,
str(["%s/%s" % (so.backstore.plugin, so.name)
for so in root.storage_objects])))
if len(matching_lio_so) > 1:
raise ConfigError("Detected unsupported configfs storage objects "
"allocation schema for storage object '%s'"
% obj.path_str)
elif len(matching_lio_so) == 0:
raise ConfigError("Could not find storage object '%s'"
% obj.path_str)
else:
lio_so = matching_lio_so[0]
lio_so.delete()
def ui_command_create(self,
storage_object,
lun=None,
add_mapped_luns=None):
'''
Creates a new LUN in the Target Portal Group, attached to a storage
object. If the I{lun} parameter is omitted, the first available LUN in
the TPG will be used. If present, it must be a number greater than 0.
Alternatively, the syntax I{lunX} where I{X} is a positive number is
also accepted.
The I{storage_object} must be the path of an existing storage object,
i.e. B{/backstore/pscsi0/mydisk} to reference the B{mydisk} storage
object of the virtual HBA B{pscsi0}.
If I{add_mapped_luns} is omitted, the global parameter
B{auto_add_mapped_luns} will be used, else B{true} or B{false} are
accepted. If B{true}, then after creating the LUN, mapped LUNs will be
automatically created for all existing node ACLs, mapping the new LUN.
SEE ALSO
========
B{delete}
'''
self.assert_root()
if lun is None:
luns = [lun.lun for lun in self.tpg.luns]
for index in range(1048576):
if index not in luns:
lun = index
break
if lun is None:
self.shell.log.error("Cannot find an available LUN.")
return
else:
self.shell.log.info("Selected LUN %d." % lun)
else:
try:
if lun.startswith('lun'):
lun = lun[3:]
lun = int(lun)
except ValueError:
self.shell.log.error("The LUN must be an integer value.")
return
else:
if lun < 0:
self.shell.log.error("The LUN cannot be negative.")
return
add_mapped_luns = \
self.ui_eval_param(add_mapped_luns, 'bool',
self.shell.prefs['auto_add_mapped_luns'])
try:
storage_object = self.get_node(storage_object).rtsnode
except ValueError:
self.shell.log.error("Invalid storage object %s." % storage_object)
return
lun_object = LUN(self.tpg, lun, storage_object)
self.shell.log.info("Created LUN %s." % lun_object.lun)
ui_lun = UILUN(lun_object, self)
if add_mapped_luns:
for acl in self.tpg.node_acls:
mapped_lun = lun
existing_mluns = [mlun.mapped_lun for mlun in acl.mapped_luns]
if mapped_lun in existing_mluns:
tentative_mlun = 0
while mapped_lun == lun:
if tentative_mlun not in existing_mluns:
mapped_lun = tentative_mlun
self.shell.log.warning(
"Mapped LUN %d already " % lun +
"exists in ACL %s, using %d instead." %
(acl.node_wwn, mapped_lun))
else:
tentative_mlun += 1
mlun = MappedLUN(acl, mapped_lun, lun, write_protect=False)
self.shell.log.info("Created mapped LUN %d in node ACL %s" %
(mapped_lun, acl.node_wwn))
self.parent.refresh()
return self.new_node(ui_lun)
