fuser -v mount_point - Linux Forums

07-12-2009	#1 (permalink)
vickey_20 Linux User Join Date: Mar 2009 Location: Mumbai, India Posts: 493	fuser -v mount_point 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 Code: 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 Code: 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 Code: 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. __________________ Only if I could understand the man pages Registered Linux user #492640 OS: RHEL4,5 ,RH 9,Ubuntu

07-12-2009	#2 (permalink)
lomcevak Linux Newbie Join Date: Mar 2009 Posts: 133	Not sure why fuser does that. What I use is lsof, that works. Code: lsof /home

07-12-2009	#3 (permalink)
vickey_20 Linux User Join Date: Mar 2009 Location: Mumbai, India Posts: 493	thank that works but shouldn't the fuser command work with only /home given to it. __________________ Only if I could understand the man pages Registered Linux user #492640 OS: RHEL4,5 ,RH 9,Ubuntu

07-12-2009	#4 (permalink)
Segfault Linux User Join Date: Jun 2008 Location: Acadiana Posts: 334	Looking at your problem at another angle, "lazy" umount often will work. See man umount, search for "lazy".

07-12-2009	#5 (permalink)
vickey_20 Linux User Join Date: Mar 2009 Location: Mumbai, India Posts: 493	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? __________________ Only if I could understand the man pages Registered Linux user #492640 OS: RHEL4,5 ,RH 9,Ubuntu

07-12-2009	#6 (permalink)
Segfault Linux User Join Date: Jun 2008 Location: Acadiana Posts: 334	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.

07-13-2009

#7 (permalink)

lomcevak

Linux Newbie

Join Date: Mar 2009

Posts: 133

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

Quote:

-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.