[plug] Unable to eject cdrom - /dev/cdrom - device busy problem

[Paul Dean]

Hya,

Is the "cdrom" scsi or ide?
Have you tried "lsmod" to what modules are loaded, then tring to "rmmod -r modname"?
Check your "logs" for messages.

The resent prob I had was the cdrw was tring to reset the scsi bus and
failed, just because it can't (stupid cdrw), over a period of time it
got worse and the only way to fix the cdrw was a cold reboot.

If I tried to "umount" the drive it would go through this process of "I
can't do what you ask, but I'll try anyway. 
Resetting bus...oh no I can't...oh well I'll just keep tring and 
fill the mem and crash the system." Linux knew what to do but the
hardware didn't.

I litterally watched the swap/mem fill and the hung rock solid.

In the end the cdrw was dying, the logic board in the drive was
failing.

If you problem is ever increasing then the cdrom maybe on it's way out.

Oh check for any "dead" processes, "D or Z" when using "ps axf"

Hope this helps.

On Fri, 19 Apr 2002, Steege, Phil E wrote:

> I have been having a problem, since upgrading to Redhat 7.2 where I get
> "device busy" messages when I try to unmount or eject my cdrom. I could not
> figure out who or what was holding the device busy.
> I used "fuser" and it says the kernel is the only process holding the cdrom.
> the cdrom will not eject or unmount either as my regular user or as root.
> It has been happening alot recently, and my only option has been to restart
> the machine.  If I wanted that I would just run Windows.
> 
> I don't remember seeing this problem in my previous version RH6.2.
> 
> I did have one time when I had forgotten I had done an nfs mount of the
> cdrom from another machine, and stopping nfs allowed me to eject the cdrom,
> but that has not been the case lately.
> 
> Has anyone else seen this.
> 
> Phil
> 

-- 
Paul...

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