Unmounting filesystem

[Leon Smith, Jr]

Why would a filesystem not umount when it appears that no processes are using it?

[Biswajit Tripathy]

Does it print any error message when you are try
to unmount it?

- Biswajit

[harry d brown jr]

Using "lsof" (http://hpux.ee.ualberta.ca/hppd/hpux/Sysadmin/lsof-4.74/) find out who has a file open,

OR

who is "cd'd" into the mount path!!!

lsof /mountpath

live free or die
harry d brown jr

[Rick Garland]

Using the 'fuser' command you can see if any processes are using the filesystem.

fuser -c /

If there are processes using the filesystem it is busy and will not umount

[A. Clay Stephenson]

Because almost certainly at least one process is or the current working directory of some process is in the filesystem. I assume you are getting the "device busy" error. Lsof (list open files) is a much better tool than fuser at find these files.

[Biswajit Tripathy]

Note that, even if no process appears to be using
a filesystem, "umount" would still report "device busy"
if there is atleast one open shell whose current working
directory is a directory in the mounted filesystem.

- Biswajit

[David de Beer]

Sometimes using the following doesn't give you the desired result:

fuser /mount/point

And you need to use:

fuser /dev/vg_name/volume_name

And for Oracle raw volumes:

fuser /dev/vg_name/rvolume_name

Regards,
David de Beer.

[jpcast_real]

ls -aFR $1 | grep \/ | grep : | cut -d : -f 1 > /tmp/dir

Whith this little script you can kill all the processes which are accesing to a path or to any file below this path . It takes some time but it works.

more /tmp/dir | while read linea
do
fuser -ku $linea
ls -aF $linea | grep -v / > /tmp/file
more /tmp/file | while read archivo
do
fuser -ku ${linea}/${archivo}
if (( $?== 0 ))
then echo ${linea}/${archivo} "was busy" > /tmp/kk
fi
done
rm /tmp/file
done
rm /tmp/dir

[YOGI_3]

check for ur pwd...
if ur in the same dir it will show u device is busy n cannt unmount

[Geoff Wild]

Do a:

fuser -cu /mountpoint

That will show you if any pids are tied to it...

Another thing to check - is it nfs exported? or an automount?

Rgds...Geoff