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

[Phillip Steege]

It is an IDE CD/CD-RW/DVD player by Ricoh.  I bought it in Brisbane and it
comes up as a fake scsi device.
I will check lsmod and the logs.
Thanks.
----- Original Message -----
From: "Paul Dean" <paul at thecave.cantech.net.au>
To: "'PLUG'" <plug at plug.linux.org.au>
Sent: Saturday, April 20, 2002 12:54 AM
Subject: Re: [plug] Unable to eject cdrom - /dev/cdrom - device busy problem


> 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...
>
> /***** Experience is that marvelous thing that enables you to
> recognize a mistake when you make it again.
> -- Franklin P. Jones *****/
>
> /*****All programmers are playwrights and all computers are lousy actors.
>             -- Unknown*****/
>
> /* How smart are Computers? They seem to need instructions all the time...
> -- Me */
>