def clean_up(device):
"""Clean up iSCSI for a given device."""
try:
rts_root = rtslib_fb.RTSRoot()
except (OSError, EnvironmentError, rtslib_fb.RTSLibError) as exc:
LOG.info(
'Linux-IO is not available, attemting to stop tgtd mapping. '
'Error: %s.', exc)
cmd = [
'tgtadm', '--lld', 'iscsi', '--mode', 'target', '--op', 'unbind',
'--tid', '1', '--initiator-address', 'ALL'
]
_execute(cmd, "Error when cleaning up iscsi binds.")
cmd = ['sync']
_execute(cmd, "Error flushing buffers to disk.")
cmd = [
'tgtadm', '--lld', 'iscsi', '--mode', 'target', '--op', 'delete',
'--tid', '1'
]
_execute(cmd, "Error deleting the iscsi target configuration.")
return
storage = None
for x in rts_root.storage_objects:
if x.udev_path == device:
storage = x
break
if storage is None:
LOG.info(
'Device %(dev)s not found in the current iSCSI mounts '
'%(mounts)s.', {
'dev': device,
'mounts': [x.udev_path for x in rts_root.storage_objects]
})
return
else:
LOG.info('Deleting iSCSI target %(target)s for device %(dev)s.', {
'target': storage.name,
'dev': device
})
try:
for x in rts_root.targets:
if x.wwn == storage.name:
x.delete()
break
storage.delete()
except rtslib_fb.utils.RTSLibError as exc:
msg = ('Failed to delete iSCSI target %(target)s for device %(dev)s: '
'%(error)s') % {
'target': storage.name,
'dev': device,
'error': exc
}
raise errors.ISCSIError(msg)
def checker(*args, **kwargs):
# This seems not to work on Ubuntu, so commented out.
#subprocess.check_output('mount|grep -q configfs || '
# 'mount -t configfs configfs /sys/kernel/config', shell=True)
dbus.SystemBus().get_object('org.kernel.TCMUService1',
'/org/kernel/TCMUService1')
try:
return func(*args, **kwargs)
finally:
try:
rtslib.RTSRoot().save_to_file()
except Exception, e:
log.exception("error saving config")
def delete_filtered_volume(req, name=None):
if not name:
raise TargetdError(GENERAL_TARGETD_ERROR, "No name specified.")
root = rtslib.RTSRoot()
stores = [obj for obj in root.storage_objects if obj.name == name
and obj.plugin == 'user']
if len(stores) != 1:
raise TargetdError(GENERAL_TARGETD_ERROR,
"%d backstores with name %r." % (len(stores), name))
targets = {}
for target in root.targets:
for tpg in target.tpgs:
for lun in tpg.luns:
if lun.storage_object.name == name:
targets[target] = 1
for target in targets.keys():
log.debug("Deleting loopback target %s for %s." % (target.wwn, name))
target.delete()
log.debug("Deleting %s." % name)
stores[0].delete()
