Re: CD-ROM Hell

[Ralph Gesler <rgesler@pacificnet.net>]

Ray Olszewski wrote:
<snip> 
> The mere act of putting a CD in a drive shouldn't cause Linux to try to
> read the CD. You normally have to execute a "mount" command for the device
> (or mount point, if it is in /etc/fstab). You should be able to kill the
> process running the mount command to halt attempts to access the CD. If
> that option isn't available to you, you'll need to tell us how you have the
> system set up to mount CDs.
> 
> BTW, I assume we are talking about iso9660 CDs here, not music CDs. If I'm
> mistaken in that assumption, please tell us what app you are using to rip
> the music CD (and you should probably tell us the basics of which Linux
> distro and version you are using). Here too, you should be able to get free
> by killing the process, whatever it might be.
> 
A little bit late to this thread, but some symptoms that I have recently
seen that may point to Bryan's problem ( assuming it is not a bad CDROM
drive )which may point to a misconfiguration, e.g. driver, device
linkage. Experimenting with the CD dump program cdda2wav I find that if
I carelessly misstep or omit a command line device parameter, the
process hangs and can not be killed with SIGKILL ,i.e.. -9, even by the
super user. I am making a wild guess that this condition is caused by
some kernel io process, as yet unidentified: it does time-out and the
calling process, cdda2wav, dies. 

I make this assumption because of the large amount of cpu usage used by
system at this time as shown by top. So far I have only observed this
with a music cd in the drive, but I have no reason to believe that the
same problem would not occur with a data, iso9660, cd. It may be
possible that a misconfiguration could cause the same symptoms.

kernel 2.4.4, Pentium 133

Ralph Gesler
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