On 8 Sep 2001, Guillaume Cottenceau wrote:
{ Denis Pelletier <[EMAIL PROTECTED]> writes:
{
{ > Hello,
{ >
{ > I'm using devfs with an up-to-date cooker and I'm experiencing a weird
{ > behaviour with my CD-ROM and CD-R (I'm burning CD's this afternoon). I'm
{ > losing my SCSI devices.
{ >
{ > Just after booting, everything is fine. I'm using ide-scsi and using
{ > cdrecord -scanbus I can see both my CD-ROM and CD-R. I master an ISO image
{ > and burn it. But 30 minutes later, I try to burn another image and I get:
{ >
{ > [root@maniwaki bus0]# cdrecord -scanbus
{ > Cdrecord 1.10 (i586-mandrake-linux-gnu) Copyright (C) 1995-2001 J�rg
{ > Schilling
{ > cdrecord: No such file or directory. Cannot open SCSI driver.
{ > cdrecord: For possible targets try 'cdrecord -scanbus'. Make sure you are
{ > root.
{ >
{ > If I rmmod and modprobe back the sd_mod module I again have access to my
{ > CD-ROM and CD-R.
{ >
{ > Is this the normal behaviour?
{
{ Have you tracked it down to devfs? When booting with no devfs (remove
{ "devfs=mount" in your boot parameters) it acts as before?
Hello Guillaume,
Thanks for your hint. If I don't use devfs I don't have this behaviour, my
CD-R is always available.
{ Also, you can possibly find valuable information in the logs
{ (/var/log/syslog, /var/log/messages, etc).
Looking at the logs and looking the output of lsmod, I see that the
ide-scsi module gets unloaded by, I guess, the /sbin/modprobe -rs that
execute every 10 minutes. In my syslog I have the following line:
Sep 7 16:00:00 maniwaki CROND[8179]: (root) CMD ( /sbin/modprobe -rs)
Sep 7 16:00:00 maniwaki kernel: scsi : 0 hosts left.
Like I said before, it only happens with devfs.
Denis
_______________________________________________
Denis Pelletier
�tudiant au doctorat
sciences �conomiques, Universit� de Montr�al
