Hi,

Is this still an open question, or did Tim's (or Tom's ?)
email help you out on this?

I tested more at home last night, where I have a better
variety of USB storage devices, including CD-RW, hard disk,
floppy, & CF reader.  These all work for me on Linux 2.4.18.

And you read the USB Guide for storage devices, right?
  at http://www.linux-usb.org/USB-guide/x498.html
It tells you what kernel CONFIG options should be used
for USB storage.

This is where I got a clue for how to mount my CD-R/RW
drive, when I had trouble mounting it.
It says to use /dev/scd0 as the device name to mount.
(Note:  the '0' may change, depending on other devices
in your particular system config.)

This 'mount' is what worked for me for a USB CD-R/RW drive:
[root@midway mnt]# mount -t iso9660 /dev/scd1  /mnt/disk

For other USB storage media types (not CD-R), device names
are usually /dev/sdXn, with 'n' being optional, depending
on whether the device has partitions, and 'X' being a drive
instance.

Here is the 'mount' command output from my USB CD-drive
mounted, and then my USB hard drive mounted at the same
mount point (not simultaneously ;) :

/dev/scd1 on /mnt/disk type iso9660 (ro)

/dev/sdb1 on /mnt/disk type vfat (rw)

(more below)

On Wed, 10 Jul 2002, Peter B Van Campen wrote:

| Here are the msgs from /var/log/messages:
|
| Jul 10 13:14:55 linux kernel: hub.c: USB new device connect on bus1/1,
| assigned device number 5
| Jul 10 13:14:55 linux kernel: WARNING: USB Mass Storage data integrity not
| assured
| Jul 10 13:14:55 linux kernel: USB Mass Storage device found at 5
| Jul 10 13:14:55 linux modprobe: modprobe: Can't locate module block-major-11
| Jul 10 13:14:56 linux last message repeated 15 times
| Jul 10 13:14:56 linux /etc/hotplug/usb.agent[5030]: Can't ignore signal CHLD,
| forcing to default.

Hm, no messages from SCSI cdrom 'module', like:
sr1: scsi3-mmc drive: 24x/24x writer cd/rw xa/form2 cdda tray

Does anyone know what the 'sr1' here refers to?
Does this have anything to do with '/dev/scd1' being the mount
device in this instance?


| This 128MB dev works correctly on M$XP.

[I don't find this bit of info very useful.  Not to blast you
or anyone in particular, but M$ USB driver developers
probably have much more device documentation available to them
than Linux USB device driver developers do.]

| Now after previous tries to resolve this prob we have focused on the
| "block-major-11' which we think is 'scsi cdrom' support module but we think
| it is built in to the kernel, not loaded as a mod.  modprobe sr_mod does not
| work  fdisk -l shows no entry for the device.
|
| file:/proc/scsi/usb-storage-0 contains :
|   Host scsi1: usb-storage
|        Vendor:
|       Product:        USB Storage Device
| Serial Number: 0AEC301000001A00
|      Protocol: Transparent SCSI
|     Transport: Bulk
|          GUID: 0aec50100aec301000001a00
|      Attached: Yes
|
| file:/proc/scsi/scsi has this:
| Attached devices:
| Host: scsi0 Channel: 00 Id: 00 Lun: 00
|   Vendor: WDIGTL   Model: WDE9100          Rev: 1.50
|   Type:   Direct-Access                    ANSI SCSI revision: 02
| Host: scsi0 Channel: 00 Id: 08 Lun: 00
|   Vendor: WDIGTL   Model: WDE9100          Rev: 1.50
|   Type:   Direct-Access                    ANSI SCSI revision: 02
|
| The modules show up ok:
|  USB-Storage                 48416   0
|  USB-uhci                      21998   0       (unused)
|  USB-core                      57184   1       (usb-storage usb-uhci)

I'm curious about the modules listed above.  Did you type
these in, or cut-and-paste the list?
or is some distro modifying the module names?

Cut-and-paste is preferred.  I'm guessing that you typed this
list, since my list (2.4.18) shows up as:

[rddunlap@midway tmp]$ lsmod
Module                  Size  Used by
usb-storage            22304   1
usb-uhci               21664   0 (unused)
usbcore                53888   1 [usb-storage usb-uhci]

| hwinfo --usb yeilds :
What/where is 'hwinfo'?
Oh, OK, part of SuSE distro.

| 03: USB 101.0: 10a00 Hub
|   [Created at usb.100]
|   Unique ID: B3Fu.9Oj4wbcMyNA
|   Hardware Class: hub
|   Model: "USB UHCI Root Hub"
|   Device: "USB UHCI Root Hub"
|   Serial ID: "d400"
|   USB GUID: 00000000000000000000d400
|   USB Device status: driver active ("hub")
|   Speed: 1.5 Mbps
Speed looks incorrect.

| 04: USB 105.0: 10600 Disk
|   [Created at usb.100]
|   Unique ID: B3Fu.o9+kZpz6ig0
|   Hardware Class: disk
|   Model: "USB Storage Device"
|   Vendor: u0aec "?"
|   Device: 5010 "?"
|   SubVendor: ""
|   SubDevice: "USB Storage Device"
|   Revision: "1.00"
|   Serial ID: "0AEC301000001A00"
|   USB GUID: 0aec50100aec301000001a00
|   USB Device status: driver active ("usb-storage")
|   Speed: 1.5 Mbps
Speed is questionable.
|   Attached to: #3 (Hub)
|
| 05: USB 201.0: 10a00 Hub
|   [Created at usb.100]
|   Unique ID: B3Fu.DUvD_7MFcGF
|   Hardware Class: hub
|   Model: "USB UHCI Root Hub"
|   Device: "USB UHCI Root Hub"
|   Serial ID: "d800"
|   USB GUID: 00000000000000000000d800
|   USB Device status: driver active ("hub")
|   Speed: 1.5 Mbps
Speed looks incorrect.

| thanks again ....................... PeterB
|
|
| On Wednesday 10 July 2002 13:03, Randy.Dunlap wrote:
| > On Wed, 10 Jul 2002, Peter B Van Campen wrote:
| > | I have SuSE 8.0 kernel 2.4.18-64gb-SMP . This sys recognises attachment
| > | of an USB 128 MB 'Pen Drive" Mass Storage device, but an entry in
| > | /dev/sdx is never created, so the device cannot be mounted or otherwise
| > | manipulated.
| > |
| > | I have seen several reports of similar problems but have NOT seen anyone
| > | report solving the problem. Has anyone on the list have a USB Mass
| > | Storage device working on kernel 2.4.18 ?
| >
| > Yes, definitely.  I would suspect a distro difference or a
| > device-specific problem.
| >
| > Can you post the kernel log file contents from when you attach
| > the USB storage device?

--
~Randy



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