卸载一个已有文件系统时，指出挂载点或者设备名其中一个就足够了，没有必要都指出。
When remounting an already mounted filesystem, it suffices to specify either the mount point or the device name. It is not necessary to specify both.
例如，一个用户空间实例也许不能修改内核(载入或移除内核模块)，也不能挂载或卸载文件系统。
For example, a user-space instance may not modify the kernel (load or remove kernel modules) nor mount or unmount file systems.
多数情况下，必须在一个已卸载的文件系统上运行fsck或帮助程序。
In most cases, it's necessary to run FSCK or its helper program on an unmounted file system.
fuser (finduserprocesses)命令也是一个开放源码应用程序，可以帮助您识别阻止文件系统卸载的进程。
The fuser (find user processes) command is another open source application that can help identify processes that are preventing you from unmounting file systems.
在一个优化的网站上，这个磁盘卸载文件会完全存储在文件系统缓存中，它位于RAM之外。
In a well-tuned site, this disk offload file fits entirely into the file system cache, and is served out of RAM.
有时，我会格外彻底地卸载一个卷组内所有的文件系统，并使用外壳脚本中的循环脚本来完成此项任务以防出现潜在问题。
Sometimes, I will be extra thorough in unmounting all file systems in a volume group and doing this with a small loop in a shell script in case there is a latent problem.
第一个任务是卸载希望复制的文件系统，然后才能访问逻辑卷。
So the first task is to unmount the filesystem we wish to copy, so that we can access the logical volume.
user指定一个非根用户被允许安装或卸载文件系统。
user specifies that a non-root user is permitted to mount and unmount the filesystem.
umount命令的标准Linux版本包含一个延迟卸载选项- l，它有助于卸载正在使用的文件系统。
The standard Linux version of the umount command includes a lazy unmount option, -l, to help unmount file systems that are in use.
umount命令的标准Linux版本包含一个延迟卸载选项- l，它有助于卸载正在使用的文件系统。
The standard Linux version of the umount command includes a lazy unmount option, -l, to help unmount file systems that are in use.
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