umount: /mnt/cdrom: device is busy
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umount: /mnt/cdrom: device is busyEvery wonder why sometimes you get this message
when you try to un-mount a NFS drive or cdrom drive
CODEroot@homer:~# umount /mnt/cdrom
umount: /mnt/cdrom: device is busy
umount: /mnt/cdrom: device is busy
root@homer:~#
Well chances a process is running that is using that directory. To find out run
CODEroot@homer:~# fuser -m /mnt/cdrom/
/mnt/cdrom/: 24066c
That shows you what process is using that directory. Now lets do a ps aux and see
whats running
CODEroot@homer:~# ps aux | grep 24066
root 24066 0.0 0.5 2244 1284 pts/10 S 14:04 0:00 -su
root@homer:~#
Looks like a the root user is in that directory. If you cannot find the term that is
in that directory then kill that process
CODEroot@homer:~# kill -9 24066
root@homer:~#
now you can un-mount
CODEroot@homer:~# umount /mnt/cdrom/
root@homer:~#
This tip brought to you by the letter J and the letter Y
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