hello,

I have two computers in my room, a Desktop (RH9)and my Linux Box (SuSE), I have recently set up my Box as a NFS server and I was sharing my CD drive to my Desktop.

I tried unmounting the cd-drive, but it didn't work, said that it was "busy". I closed all of the terminals on all computers to make sure it wasn't busy because of that.

I then came upon the idea to remove the mounted cd drive from the /etc/mtab. The computer let me eject the CD!! yeah! Or not Not the computer thinks that something is mounted when it is not. It still says that the CD drive is mounted when i try and mount a new CD.

Has anyone any ideas? I have already restarted the rpc.mountd daemon for the NFS server. Could the NFS server be the problem?

It was happening before I messed with mtab, so I don't think that is the problem.

thanks in advance
Hamish

does fuser give you any information abuot which users / processes are alledgedly using it?

nothing at all....

I also tried

ps waxf

but that didn't give any help. Didn't mention my cd drive at all.

One other puzzling thing is that i noticed my CD drive is /dev/sr0 . I don't really know what sr0 is. SCSI is sd0, and it is just a normal CD-writer.

thanks
hamish

have now tried

# fuser -v /mnt/cdrom

which gave the output

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

THis suggests that the /mnt/cdrom is being used by the kernel. It doesn't give a PID so I can't kill it.

I tried 'killall -9 kernel' and that didn't do anything. Also tried to kill cdrom and mount.

hope this gives you more info to work from.

hamish

I suspect that since your sharing the CDROM via NFS that is your problem. It is keeping the drive busy. Did you try killing the NFS server and then try to unmount the drive?

BTW you shouldn't change the mtab file.

You need lsof .Just 'man lsof'
So you can find NODE, then kill it.