def mount_snapshot(json_args):
_logger.info("MountSnapshot mount_snapshot json_args:{}".format(json_args))
result_mount_snapshot = dict()
j_args = json.loads(json_args)
snapshots = j_args.get('snapshots', None)
not_need_nbd = j_args.get('not_need_nbd', False)
if snapshots and (not not_need_nbd):
# 初始化一个 nbd 对象
nbd_object = nbd.nbd_wrapper(
nbd.nbd_wrapper_disable_lvm_allocator(nbd.nbd_wrapper_local_device_allocator()))
device_path = nbd_object.device_path
device_name = nbd_object.device_name
# 挂载 (线程)
nbd_thread = nbd.nbd_direct_images(device_name, nbd_object, snapshots)
nbd_thread.start()
nbd.nbd_wrapper.wait_nbd_read_ok(nbd_object)
nbd_indet = uuid.uuid4().hex
result_mount_snapshot['nbd_device_path'] = device_path
result_mount_snapshot['nbd_object_uuid'] = nbd_indet
with _threading_op_locker:
_threading_pools[nbd_indet] = nbd_object
else:
result_mount_snapshot['nbd_device_path'] = None
result_mount_snapshot['nbd_object_uuid'] = None
_logger.info("MountSnapshot mount_snapshot result_mount_snapshot:{}".format(result_mount_snapshot))
return result_mount_snapshot
def _nbd_object_by_data_device(data_device):
device_profile = data_device['device_profile']
nbdinfo = device_profile['nbd']
return nbd.nbd_wrapper(
nbd.nbd_wrapper_disable_lvm_allocator(
nbd.nbd_wrapper_empty_allocator(nbdinfo['device_index'],
nbdinfo['device_name'],
nbdinfo['device_path'],
nbdinfo['vnc_address'])))
def __init__(self):
threading.Thread.__init__(self)
self.__mount_cmd = None
self.__umount_cmd = None
self.new_nbd = nbd.nbd_wrapper(
nbd.nbd_wrapper_disable_lvm_allocator(
nbd.nbd_wrapper_local_device_allocator()))
self.device_path = self.new_nbd.device_path
self.scsi_id = None
_logger.debug('nbd init,device_path {}'.format(self.device_path))
def __init__(self, username='', hostname='', diskindex=0, disk_snapshots=''):
threading.Thread.__init__(self)
self.username = username
self.hostname = hostname
self.diskindex = diskindex
self.disk_snapshots = disk_snapshots
self.new_nbd = nbd.nbd_wrapper(nbd.nbd_wrapper_local_device_allocator())
self.device_path = self.new_nbd.device_path
_logger.debug('username {} hostname {} diskindex {} disk_snapshots {} nbd start,device_path {}'.
format(self.username, self.hostname, self.diskindex, self.disk_snapshots, self.device_path))
def _get_nbd_object(self):
if self._nbd_object:
return self._nbd_object
else:
self._nbd_object = nbd.nbd_wrapper(
nbd.nbd_wrapper_disable_lvm_allocator(
nbd.nbd_wrapper_local_device_allocator()))
nbd_thread = nbd.nbd_direct_images(self._nbd_object.device_name,
self._nbd_object,
self._snapshots)
nbd_thread.start()
nbd.nbd_wrapper.wait_nbd_read_ok(self._nbd_object)
return self._nbd_object
def __init__(self, config):
self._config = config
self._nbd_object = nbd.nbd_wrapper(
nbd.nbd_wrapper_disable_lvm_allocator(
nbd.nbd_wrapper_local_device_allocator()))
self._nbd_thread = None