cdrecord no workie after upgade to 2.6.10

[Kurt Wall]

On Fri, Dec 31, 2004 at 06:10:33PM -0800, Net Llama! took 34 lines to write:
> Up until 2 days ago I was running a 2.6.7 kernel that I built, and life 
> was good.

[upgrade to 2.6.10 == life is not good]

> Since upgrading to 2.6.10 (that I built) performance has been horrible, 
> and I can no longer burn CDs with cdrecord.  I'm aware of the changes in 
> 2.6.8 that restrict burning only to root, however I'm trying to do this 
> as root, and cdrecord just does nothing.  It goes through all the 
> motions as if its going to burn the CD, but just hangs as soon as its 
> supposed to actually use the laser on the disk.

There were several threads about cdrecord hanging on LKML, but I don't 
recall seeing a definitive root cause analysis or a solution.

> The command i'm using is quite simply:
> cdrecord -v foo.iso
> 
> I can mount/read CDs just fine in the same burners (one is a CDRW, the 
> other a DVD+RW), so i'm fairly confident that its not a hardware 
> problem, especially since both of them are having the same burning 
> problem under 2.6.10.
> 
> FWIW, this is on FC2 with cdrecord-2.01
> 
> Am i missing something obvious here?

Hm. 2.6.9 worked okay. We have the same versions of cdrecord, but $DEITY
only knows how (if) Red Hat hacked up the version they ship. Interestingly,
cdrecord's author suggests using 2.4 or Solaris:

$ cdrecord --version
Cdrecord-Clone 2.01 (i686-pc-linux-gnu) Copyright (C) 1995-2004 J?rg Schilling
cdrecord: Warning: Running on Linux-2.6.9
cdrecord: There are unsettled issues with Linux-2.5 and newer.
cdrecord: If you have unexpected problems, please try Linux-2.4 or Solaris.
cdrecord: Warning: Linux-2.6.8 introduced incompatible interface changes.
cdrecord: Warning: SCSI transport does no longer work for suid root programs.
cdrecord: Warning: if cdrecord fails, try to run it from a root account.

I've used it both at work and here at home (on Slackware, natch) and 
haven't had any trouble aside from the annoying must-run-as-root-and-suid-root-is-deliberately-borken nonsense.

Kurt
-- 
"You'll never be the man your mother was!"