fuser -v mount_point

[vickey_20]

I am having problem understanding how to use the above command. Whenever I try to umount a partition which is presently busy , the fuser command is supposed to come in handy. I have read from a book that

fuser -v mount_point

Provides the necessary information about who is using the mounted point.
Now where I get the problem : I login as a normal user( vickey in this case) in /home directory ( also a partition as per my fstab), on some other terminal as root I try to unmount /home and get the device is busy ( Ok no problem as expected) . Now the command

fuser -v /home

must tell me that /home is currently used by user vickey. But it doesn't show me anything but on the other hand when I issue this command

fuser -v /home/vickey

It shows the activity of user vickey on the /home partition . But the whole point is , fuser by default should show me that vickey is doing some thing on /home , when "/home" is passed as an argument to the fuser command and not when "/home/vickey" is passed.
Thanks in advance for replying.

[lomcevak]

Not sure why fuser does that. What I use is lsof, that works.

lsof /home

[vickey_20]

thank that works but shouldn't the fuser command work with only /home given to it.

[Segfault]

Looking at your problem at another angle, "lazy" umount often will work. See man umount, search for "lazy".

[vickey_20]

going throught the man pages I uderstood that specifying the lazy option with umont will only umoun the partition when there is no activity going on it( If I m not wrong) . But I what I wanna know is who are working on the partition right now (lsof porved to be useful ) But "fuser -v" is supposed to do the same task?

[Segfault]

Try it. If all you need is to unmount while volume is in use lazy will often do. It waits until activity stops for a fraction a second and umounts.

[lomcevak]

Figured it out. You need to also use the -m option with fuser. From the manpage:

-m name specifies a file on a mounted file system or a block
device that is mounted. All processes accessing files on that
file system are listed. If a directory file is specified, it
is automatically changed to name/. to use any file system that
might be mounted on that directory.