工作需要，找了很久，终于找到答案
under Ubuntu two new options where introduced to the option field in /etc/fstab: bootwait and nobootwait. The bootwait option marks filesystems that need to be checked and mounted before the boot conitnues ($local_fs and $remote_fs resources for Debian). The nobootwait option marks filesystems that are not important for the boot process and don't have to block the boot. For the same to be implemented in Debian (in systemd or via insserv) the mount utility needs to just filter the options out and ignore them. Otherwise filesystems fail to mount. If you agree to this feature and need help extracting the patch from the ubuntu package let me now and I will attach it.
附上原链接：http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=651468