Jani, Jens, Matt, Eamon & Jakub,
Thanks for your help so far. I think I'm closer, but for some reason
it's still not working for me. Maybe it's my kernel SCSI options? Maybe
it's a modules.conf setting? Maybe it's something under /etc/hotplug?
I'm not clear yet what is happening, but there is a little life.
Sorry for this being long. I've opted to put in more info vs. less in
the hopes someone will see the error of my ways.
On Tue, 2004-01-20 at 12:22, Jani-Matti H�tinen wrote:
> On Tuesday 20 January 2004 20:12, Mark Knecht wrote:
> > Hi,
> > If I use a grub boot option like hdc=ide-scsi, then what /dev device do
> > I mount in fstab to use the device?
>
> It'll be the first device on the scsi bus. (Assuming that you don't have other
> scsi devices) It'll be somewhere in /dev/scsi/. Can't remember it anymore,
> since I've switched to atapi writing.
Immediately after booting in the following manner
title Gentoo Linux 2.4.22r2
root (hd0,5)
kernel (hd0,5)/boot/bzImage-2.4.22r2 ro root=/dev/hda7 hdc=ide-scsi
hdd=ide-scsi
if I look in /dev/scsi
Wizard root # ls /dev/scsi
Wizard root #
However, if at this point I run cdrecord -scanbus the devices are found:
Wizard root # cdrecord -scanbus
Cdrecord-Clone 2.01a23-dvd (i686-pc-linux-gnu) Copyright (C) 1995-2003
J�rg Schilling
Note: This version is an unofficial (modified) version with DVD support
Note: and therefore may have bugs that are not present in the original.
Note: Please send bug reports or support requests to
<[EMAIL PROTECTED]>.
Note: The author of cdrecord should not be bothered with problems in
this version.
Linux sg driver version: 3.1.25
Using libscg version 'schily-0.7'.
scsibus0:
0,0,0 0) 'LITE-ON ' 'DVDRW LDW-411S ' 'FS0B' Removable
CD-ROM
0,1,0 1) 'LITE-ON ' 'LTR-48246S ' 'SS0B' Removable
CD-ROM
0,2,0 2) *
0,3,0 3) *
0,4,0 4) *
0,5,0 5) *
0,6,0 6) *
0,7,0 7) *
Wizard root #
and stuff is created under /dev/scsi:
Wizard root # ls /dev/scsi
host0
Wizard root #
as well as two new devices show up in /dev:
Wizard root # ls -al /dev/sg*
/dev/sg0 -> scsi/host0/bus0/target0/lun0/generic
/dev/sg1 -> scsi/host0/bus0/target1/lun0/generic
/dev/sg:
total 0
c0b0t0u0 -> ../scsi/host0/bus0/target0/lun0/generic
c0b0t1u0 -> ../scsi/host0/bus0/target1/lun0/generic
Wizard root #
People have talked about, and I see it in devfsd.conf that somethign
called sr0 and sr1 should be created, but they are not so far.
Trying to mount /dev/sg1 doesn't work:
Wizard root # mount /dev/sg1 -t iso9660 /mnt/cdrom
mount: /dev/sg1 is not a block device
Wizard root #
> > Do I need to make any changes at all in /etc/devfsd.conf to make this
> > work?
>
> There's a section in the default devfsd.conf which creates the /dev/cdrw
> symlink for the first device in the scsi bus. Uncomment it and edit it do
> your needs. (You might, for example switch it to /dev/dvdrw for sake of
> clarity) You should, of course also edit the relevant line in fstab.
> If you have two devices in the scsi bus (e.g. a dvd-rw and a cd-rw drive)
> you can just copy and paste the /dev/cdrw section in devfsd.conf and edit it
> for the second drive. (The syntax should be fairly straightforward) You might
> also consider editing the sections which create the /dev/cdrom and /dev/dvd
> symlinks to point to the right drives in the scsi bus. That way apps like
> mplayer or ogle will find the devices without any extra options.
Here is what I currently have in devfsd.conf. It looks right to me, but
I'm probably missing something stupid:
# Create /dev/cdrom for the first cdrom drive
LOOKUP ^cdrom$ CFUNCTION GLOBAL mksymlink
cdroms/cdrom1 cdrom
REGISTER ^cdroms/cdrom1$ CFUNCTION GLOBAL mksymlink $devname
cdrom
UNREGISTER ^cdroms/cdrom1$ CFUNCTION GLOBAL unlink cdrom
# Create /dev/dvd for the second cdrom drive
# (change 'cdroms/cdrom1' to suite your setup)
# NOTE: We add the fully qualified path here, else some apps
# have problems to resolve the true device (drip comes to mind)
LOOKUP ^dvd$ CFUNCTION GLOBAL mksymlink
${mntpnt}/cdroms/cdrom0 dvd
REGISTER ^cdroms/cdrom0$ CFUNCTION GLOBAL mksymlink ${devpath}
dvd
UNREGISTER ^cdroms/cdrom0$ CFUNCTION GLOBAL unlink dvd
# Create /dev/cdrw for the second cdrom on the scsi bus
# (change 'sr0' to suite your setup)
LOOKUP ^cdrw$ CFUNCTION GLOBAL mksymlink sr1 cdrw
REGISTER ^sr1$ CFUNCTION GLOBAL mksymlink $devname cdrw
UNREGISTER ^sr1$ CFUNCTION GLOBAL unlink cdrw
# Create /dev/dvd1 for the first cdrom on the scsi bus
# (change 'sr0' to suite your setup)
LOOKUP ^dvd1$ CFUNCTION GLOBAL mksymlink sr0 dvd1
REGISTER ^sr0$ CFUNCTION GLOBAL mksymlink $devname dvd1
UNREGISTER ^sr0$ CFUNCTION GLOBAL unlink dvd1
Do the srX names really need to sgX names? I just thought of that
possibility.
Kernel is 2.4.22-r2 Loaded modules at this point are:
Wizard root # lsmod
Module Size Used by Not tainted
ide-scsi 9936 0 (autoclean)
sg 27580 0 (autoclean)
i2c-proc 6452 0
i2c-core 15300 0 [i2c-proc]
<SNIP>
sbp2 17748 0 (unused)
scsi_mod 87296 2 [ide-scsi sg sbp2]
raw1394 19608 0 (unused)
ohci1394 26128 0 (unused)
ieee1394 47940 0 [sbp2 raw1394 ohci1394]
hid 16036 1
Wizard root #
Anyway, thanks for going through this with me. I think it's pretty
close.
With best regards,
Mark
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