Re: [gentoo-user] Re: /dev/cdrom has gone!

[Robert Crawford <flacycads@cox.net>]

Page 5-6 of a long udev thread is good reading on recent udev problems.

Robert
http://forums.gentoo.org/viewtopic-t-355069-postdays-0-postorder-asc-start-100.html


On Monday 05 September 2005 10:51 am, Steve Evans wrote:
> On Monday 05 Sep 2005 15:31, Robert Crawford wrote:
> > I just had a similar problem after I updated udev (I think). I run ~x86
> > systems, always kept current, so I expect a few minor hiccups, even
> > though I'm extremely careful  with etc-update. There seems to be some
> > weird stuff going on with udev, at least on my system, but after a lot of
> > reading on the formum, and trying many things, I tried changing my fstab
> > line
> >
> > /dev/cdroms/cdrom0	/mnt/cdrom	iso9660		noauto,rw,user		0 0
> >
> > to this.
> >
> > /dev/hdc 	/mnt/cdrom	iso9660		noauto,rw,user		0 0
> >
> > I think some rule in the new udev changed, and it wasn't creating cdroms
> > and cdrom0 anymore- only /dev/hdc.
> >
> > I looked in /dev, and sure enough, the cdrom and cdrw links point to the
> > hdc block device.
> >
> > Anyway, whatever it was, changing the fstab line now lets me mount cdroms
> > normally, as before.
> >
> > Robert Crawford
>
> I assume that as you are running ~x86 you have upgraded to gentoo-sources
> version 2.6.13. In that version devfs has been removed (well the config
> option has gone, the code is still there). The /dev/cdroms/cdrom0 style of
> device file name is a part of devfs, so if with earlier kernels you still
> had devfs enabled in the kernel, despite running udev, then you would have
> gotten the /dev/cdroms/cdrom0 link.
>
> I am running x86 and running with udev but with devfs still in the kernel.
> Yesterday I disabled devfs on one of the machines so that I could see what
> would break in preparation for 2.6.13 moving to x86. I experienced exactly
> your problem of /dev/cdroms/cdrom0 disappearing. Fortunately the solution
> is simple, as you describe above.
>
> Steve
> --
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> Steve Evans            E-mail: mailto:stevee@gorbag.com
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