让自己陷入棘手的境地.将aufs挂载在/ mnt / 1
aufs on /mnt/1 type aufs (rw,relatime,si=daab1cec23213eea)
我无法卸下这件事：
sudo umount -f /mnt/1 umount2: Stale NFS file handle umount: /mnt/1: Stale NFS file handle umount2: Stale NFS file handle umount2: Stale NFS file handle
如何卸载挂载点？ (无需重启系统)
(注意：aufs位于openafs系统之上,而不是NFS.)
解决方法
来自man 8 umount：
-f Force unmount (in case of an unreachable NFS system).
(Requires kernel 2.1.116 or later.)
-l Lazy unmount. Detach the filesystem from the filesystem hierar-
chy now,and cleanup all references to the filesystem as soon
as it is not busy anymore. (Requires kernel 2.4.11 or later.)
如果sudo umount -f / mnt / 1不起作用,你可以试试sudo umount -l / mnt / 1.
