Q:how to mount external USB-HDD - Linux Setup, Configuration & Administration

[davide@yahoo.com]

Barnoid <barnoid.nospam.gmx.net> wrote:

> /dev/s??, but the problem is that in /dev there are no SCSI devices

Did you recompile your kernel with the SCSI emulation, SCSI Generic,
SCSI disk, USB support and USB mass storage support? Or did you
added the same as modules?

Davide

[Barnoid]

[email]davide[/email] wrote:

>> /dev/s??, but the problem is that in /dev there are no SCSI devices

>
> Did you recompile your kernel with the SCSI emulation, SCSI Generic,
> SCSI disk, USB support and USB mass storage support? Or did you
> added the same as modules?

I did recompile the kernel, following the instructions in
[url]http://www.linux-usb.org/USB-guide/book1.html[/url], but still no scsi devices
show up.

The 'lsmod' output in my original post, however, was generated running the
unaltered kernel of Mandrake 9.1:
[rootlangnau root]$ cat /proc/version
Linux version 2.4.21-0.13mdk (flepiedbi.mandrakesoft.com) (gcc version
3.2.2 (Mandrake Linux 9.1 3.2.2-3mdk)) #1 Fri Mar 14 15:08:06 EST 2003

If I don't recompile the kernel, can you tell me which modules should be
loaded? Having a look at my lsmod-output in the original post, do you see
modules that are missing?

Thanks,
Barnoid

[davide@yahoo.com]

Barnoid <barnoid.nospam.gmx.net> wrote:

> If I don't recompile the kernel, can you tell me which modules should be
> loaded?

I always use monolitic kernel (why bother with modules when you load
them at boot anyway???), but it looks to me that you should have
everything in place. What does dmesg display in regard of SCSI?

Davide

[Alex Yung]

Barnoid (barnoid.nospam.gmx.net) wrote:
: I did recompile the kernel, following the instructions in
: [url]http://www.linux-usb.org/USB-guide/book1.html[/url], but still no scsi devices
: show up.

: The 'lsmod' output in my original post, however, was generated running the
: unaltered kernel of Mandrake 9.1:
: [rootlangnau root]$ cat /proc/version
: Linux version 2.4.21-0.13mdk (flepiedbi.mandrakesoft.com) (gcc version
: 3.2.2 (Mandrake Linux 9.1 3.2.2-3mdk)) #1 Fri Mar 14 15:08:06 EST 2003

: If I don't recompile the kernel, can you tell me which modules should be
: loaded? Having a look at my lsmod-output in the original post, do you see
: modules that are missing?

: Thanks,
: Barnoid

The Mandrake 9.1 kernel worked with my camera. This is my "/var/log":

kernel: hub.c: USB new device connect on bus1/2/4, assigned device number 5
kernel: usb.c: USB device 5 (vend/prod 0x4b0/0x106) is not claimed by any active driver.
/etc/hotplug/usb.agent: Setup usb-storage for USB product 4b0/106/100
kernel: Initializing USB Mass Storage driver...
kernel: usb.c: registered new driver usb-storage
kernel: scsi2 : SCSI emulation for USB Mass Storage devices
kernel: Vendor: NIKON Model: NIKON DSC E775 Rev: 1.00
kernel: Type: Direct-Access ANSI SCSI revision: 02
kernel: Attached scsi removable disk sdb at scsi2, channel 0, id 0, lun 0
kernel: SCSI device sdb: 125440 512-byte hdwr sectors (64 MB)
kernel: sdb: Write Protect is off
kernel: /dev/scsi/host2/bus0/target0/lun0: p1
kernel: USB Mass Storage support registered.
kernel: usb.c: USB disconnect on device 5

If you have an IDE CD/RW, I would suggest you to run the IDE device
as SCSI device so that you can be sure all of the necessary SCSI
module(s) are loaded. You should always run your IDE CD via SCSI
emulation anyway. I am so used to use "cdrdao" to copy VCD so that
both of my IDE CD and DVD/RW operate as SCSI devices. I will post
the output of my "lsmod" when I plug in my camera since I don't have
an external USB-HDD. It is my understanding that both USB devices
operate somewhat similar.

[Barnoid]

Thanks, Davide & Alex.

I recompiled kernel with SCSI/USB/USB debug output.
During startup, I now get the following error message:

kernel: SCSI subsystem driver Revision: 1.00
kernel: kmod: failed to exec /sbin/modprobe -s -k scsi_hostadapter, errno=2
last message repeated 3 times

possibly because there's no SCSI hostadapter in my PC.

Anyway, looking at /var/log/messages and plugging the USB HDD in produces
the following message:

kernel: hub.c: new USB device 00:1d.0-2, assigned address 5
kernel: Manufacturer: ScanLogic USBIDE
kernel: Product: ScanLogic USBIDE
/sbin/hotplug: arguments (usb) env (DEVFS=/proc/bus/usb OLDPWD=/
PATH=/bin:/sbin:/usr/sbin:/usr/bin ACTION=add PWD=/etc/hotplug SHLVL=1
HOME=/ DEVICE=/proc/bus/usb/002/005 INTERFACE=8/5/80 PRODUCT=4ce/2/23
TYPE=0/0/0 DEBUG=kernel _=/bin/env)
/sbin/hotplug: invoke /etc/hotplug/usb.agent ()
/etc/hotplug/usb.agent: ... no modules for USB product 4ce/2/23

so I guess the system does not know what to do with my device?
how can I teach it that this is a USB-IDE device?

Regards,
Barnoid