echo " -c, --cow: specifies the copy on write directory (default: /live/cow)."
echo " -d, --device: specifies the output snapshot device (default: none)."
echo " -o, --output: specifies the output image file (default: ${type} dependent)."
echo " -c, --cow: specifies the copy on write directory (default: /live/cow)."
echo " -d, --device: specifies the output snapshot device (default: none)."
echo " -o, --output: specifies the output image file (default: ${type} dependent)."