низкоуровневое управление логическими томами (low level logical volume management)
Переменные окружения (Environment variables)
DM_DEV_DIR
The device directory name. Defaults to "/dev" and must be
an absolute path.
DM_UDEV_COOKIE
A cookie to use for all relevant commands to synchronize
with udev processing. It is an alternative to using
--udevcookie option.
DM_DEFAULT_NAME_MANGLING_MODE
A default mangling mode. Defaults to "auto" and it is an
alternative to using --manglename option.
