can't umount cdrom

[eric_204]

I meet this problem for many times already, could suggest how can I umount the cdrom . thx in advance.

# umount /mnt/cdrom
umount: /mnt/cdrom: device is busy
# lsof /mnt/cdrom
# fuser /mnt/cdrom
/mnt/cdrom:
No process references; use -v for the complete list
# fuser -v /mnt/cdrom

USER PID ACCESS COMMAND
/mnt/cdrom root kernel mount /mnt/cdrom

[Alexander Chuzhoy]

Did you try: umount -l /mnt/cdrom

[Mark Grant]

Personally, I think think the "mount -l" option could become more irritating than it's worth.

Do you have an automountin CDROM?

[eric_204]

thd , but I tried "-l" , it pop "no such option" , please advise .

[Steven E. Protter]

reboot the unit, eject the cd while the server/computer is resetting.

The most common cause of this is an open process on the cdrom

In HP-UX the command to break that is fuser -cuk /mount_of_cdrom

9 times out of 10 you terminate yourself in that process.

While doing an install cd /cdrom instead of /cdrom/runInstaller from somewhere else.

That sort of thing.

SEP

[Alexander Chuzhoy]

Does the "eject" command works?

[eric_204]

thx reply , the command "eject" is not work in my case . On the other hand , except reboot the server , what can I do ? thx.

[eric_204]

I don't want to reboot the system , is there other suggestion ? thx.

[Cristian Draghici]

What if you press the eject button on the CDROM unit?

Is the CD ejected?

[K.C. Chan]

Have you check to make sure there are no process accessing /mnt/cdrom, try using fuser -u /mnt/cdrom. If there are any processes accessing /mnt/cdrom, you can use fuser -k options to kill it, then try umounting /mnt/cdrom.

[Martin P.J. Zinser]

Hello,

first try df to check what is mounted on
/mnt/cdrom . The next would be to check
/etc/fstab if there might be an automount
that just hogs the CD already during startup.

Greetings, Martin

[Adam Moody_1]

I've had problems before with automount (or autofsd) grabbing the cdrom and not letting go until a reboot (until I discovered that killing the automount daemon resolved it) - never found out why the automount did this, and it only did this on some CD's.

Also, have you tried ejecting with root?
Closed all user terminals to the server?

[Denise Spinger]

Try the command:

exportfs -u /dev/cdrom
umount /dev/cdrom

Maybe your cdrom is nfs exported and that is the reason for not umounting.

Good lock.

Deise

[Nobody's Hero]

Remember, if someone pfs mounted the cdrom like "pfs_mount -o xlat=unix /dev/dsk/cxtxdx /cdrom"

Then you need to pfs_umount /cdrom.
If this is the case, run pfs_umount -c /cdrom
to clear and release cdrom. Make sure pfsd and pfs_mountd are running, they are in /usr/sbin.

If you use pfs_mount you must use pfs_umount. If you use pfs_mount and the use umount, it will lock the cdrom and you must reboot. I've been through this problem a million times.

[Bill Maginnis]

I've found that if I had Konqueror open and was currently in the /MNT/CDROM directory (or a sub-directory), closed Konqueror, and tried to UMOUNT, I would get the "device is busy" headache. To resolve this I would re-open Konqueror, select a directory other than the /mnt/cdrom, then try the umount, everything would be fine.
If I had MP3s on the mounted CD and the MP3 player software had choked, then I'd have to kill that first and then umount.
Just a thought...
-*-Bill