"umount: cannot unmount : Device busy" whereas it doesn't seem to!

[Romaric Guilloud]

glen3 # cd /
glen3 # umount /soft/RCF2
umount: cannot unmount /soft/RCF2 : Device busy
glen3 # fuser -ku /soft/RCF2
/soft/RCF2:

glen3 # fuser -ku /dev/asrcf2/lvol4
/dev/asrcf2/lvol4:

glen3 # fuser -ku /dev/asrcf2/rlvol4
/dev/asrcf2/rlvol4:

glen3 # umount /soft/RCF2
umount: cannot unmount /soft/RCF2 : Device busy
glen3 #


How tu unmount this pretended "busy" FS?
Anything else than a reboot?
Thanks in advance for your help.
Regards,

Romaric.

[Paula J Frazer-Campbell]

Hi

fuser -u /soft/RCF2

Should help-- got to run it as root.

paula

[Robert-Jan Goossens]

Hi Romanic,

You could try with lsof, but i'm afraid you will have to reboot.

Did you mount a cdrom with pfs_mount ?

Regards,
Robert-Jan

[Pete Randall]

Romaric,

I suspect that some one has cd'd into this directory, thus making it their $PWD. Unfortunately, fuser will not detect this. The only way you can unmount this without rebooting is to make sure all your users are not cd'd into this file system.


Pete

[Geoff Wild]

Do a

fuser -cku /soft/RCF2

Rgds...Geoff

[Paula J Frazer-Campbell]

Hi
Can you cd into the mount volume and traverse the dirs?

Also try an fuser on the files.

Paula

[Romaric Guilloud]

fuser -u : not any better.
lsof : already tried, displayed no PID linked to this.

Guess will have to plan a reboot then...
Thanks anyway.

Romaric.

[Bharat Katkar]

Are u sure whether FS name is /soft/RCF2 or just /soft.
If it is earlier one then Geof's solution should work otherwise,
#umount /soft
OR
#fuser -kuc /soft
#umount /soft

[Romaric Guilloud]

Yes, /soft/RCF2 is the mount point.
Nothing worked amongst your proposals.
Thanks anyway, reboot is next then.
Romaric.

[Victor BERRIDGE]

I suspect your problem being another mount on the filesystem you are trying to umount...

I just tested my 2 cent thoughts on a box:
/dev/vg00/lvol6 2662400 1391180 1191825 54% /opt
/dev/r5vg03/lvol5 2560000 1613253 887604 65% /opt/sas/8.2
/dev/vg00/lvol12 516096 212744 284501 43% /opt/patrol
/dev/vg00/lvol13 6144000 5440438 659593 89% /octant
/dev/vg00/lvol5 500000 14819 454947 3% /home
/dev/r5vg03/lvol6 1024000 327647 652888 33% /export/s
/dev/r5vg02/lvol6 1024000 9718 950963 1% /export/f
/dev/s4vg01/lvol5 4096000 756758 3136142 19% /data/www
octant # umount /data/www
octant # cd /sm/export
octant # mkdir importfs
octant # cd /
octant # umount /sm/export
octant # mount /sm/export
octant # mount /dev/s4vg01/lvol5 /sm/export/importfs
octant # umount /sm/export
umount: cannot unmount /sm/export : Device busy
octant # fuser -cku /sm/export
/sm/export:

octant # r umount
umount /sm/export
umount: cannot unmount /sm/export : Device busy
octant # fuser -cu /sm/export
/sm/export:

octant # umount /sm/export/importfs
octant # umount /sm/export
octant #
octant # mount /sm/export
octant # mount /data/www
octant #

All the best
Victor