def force_clean(cid, client, emu):
""" force unmounts and removes any block devices
to prevent memory corruption """
driver = client.info()['Driver']
emu.unmount(force=True)
# unmount path
Mount.unmount_path(emu.tmp_image_dir,force=True)
# if device mapper, do second unmount and remove device
if driver == 'devicemapper':
Mount.unmount_path(emu.tmp_image_dir,force=True)
device = client.inspect_container(cid)['GraphDriver']['Data']['DeviceName']
Mount.remove_thin_device(device,force=True)
