umount cdrom

[Lukas Grijander]

Hi all.

I want to umount /cdrom, but it?s busy.

Now I want to kill the processes who keep the cdrom busy, (kill -9) but these processes don?t want to die, probably they are waiting for I/O.

How can I do these processes to free the device, to umount cdrom?

Thanks all.
Rafa

[Alexander M. Ermes]

Hi there.
Someone is still working in that subdirectory.
Get the lsof tool, check it and tell the user to get out.
Rgds
Alexander M. Ermes

[Ralph Grothe]

Hi Rafael,

even without having lsof installed you can see which processes are busy on /cdrom.
Just issue

# ps -fp "$(fuser -cu /cdrom 2>/dev/null)"

If it's safe to kill those in one go, just try

fuser -ck /cdrom && umount /cdrom

[Stefan Farrelly · Accepted solution]

If fuser -k doesnt kill the processes preventing the cd from being unmounted then your dead. You must reboot your server. If some processes wont die try killing their parent process also (unless the parents pid=1). Are you using pfs_mount ? if so you should kill the pfs processes also.

[Victor_5]

first
fuser -cu /mount_point
then
fuser -ku /mount_point

This command can work in most of similar NFS issues.

[Magdi KAMAL]

Hi Rafael,

If you are using pfs_mount to install oracle, the only way to get the cdrom out is the pfs_umount.


Magdi