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mellofone
Apprentice
Joined: 13 Apr 2002
Posts: 287
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 Posted: Tue Nov 12, 2002 11:16 pm Post subject: USB Mass Storage, Firewire, and SCSI Emulation |
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Thus begins the nightmare 
I have been trying to get some external firewire storgage working with my gentoo (2.4.19-r9) box. I already have a CDR working perfectly with SCSI emulation, so I thought this would be a breeze. I have tried everything I can find with SCSI emulation to make the drive work, and no matter what I tried, the /dev/sd? just never seemed to appear. I gave up and thought it was something with my generic D-Link firewire adapter.
Today, I bought an Archos USB 2.0 MP3 player and an NEC USB 2 adapter. I installed the works, compiled USB2 into the kernel, and rebooted.
SAME RESULTS! The USB adapter card is found:
| Code: | hub.c: USB new device connect on bus1/1, assigned device number 2
scsi1 : SCSI emulation for USB Mass Storage devices |
But again, no magical /dev/sd? link is there.
The firewire card did the exact same thing:
| Code: | ohci1394: $Rev: 530 $ Ben Collins <bcollins@debian.org>
PCI: Found IRQ 9 for device 00:0d.0
PCI: Sharing IRQ 9 with 00:09.0
ohci1394_0: OHCI-1394 1.0 (PCI): IRQ=[9] MMIO=[e7108000-e7108800] Max Packet=[2048]
scsi2 : IEEE-1394 SBP-2 protocol driver (host: ohci1394)
$Rev: 530 $ James Goodwin <jamesg@filanet.com>
SBP-2 module load options:
- Max speed supported: S400
- Max sectors per I/O supported: 255
- Max outstanding commands supported: 8
- Max outstanding commands per lun supported: 1
- Serialized I/O (debug): no
- Exclusive login: yes
resize_dma_pool: unknown device type -1 |
Since it is doing this with BOTH cards, one which I KNOW is not generic, I am assuming that I am missing something easy somewhere. Any ideas what I can check? |
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biroed
Tux's lil' helper
Joined: 16 Aug 2002
Posts: 147
Location: Amsterdam
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| Posted: Wed Nov 13, 2002 12:49 pm Post subject: |
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Maybe this in your devfsd.conf:
| Code: | #Create sda4 for usb-zip
LOOKUP ^sda4 CFUNCTION GLOBAL mksymlink scsi/host1/bus0/target0/lun0/part4 sda4
REGISTER ^scsi/host1/bus0/target0/lun0/part4 CFUNCTION GLOBAL mksymlink $devname sda4
UNREGISTER ^scsi/host1/bus0/target0/lun0/part4 CFUNCTION GLOBAL unlink sda4
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make sure you use the right host!! (cdrecord -scanbus) for the storage. |
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mellofone
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Joined: 13 Apr 2002
Posts: 287
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| Posted: Thu Nov 14, 2002 12:40 am Post subject: |
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It never shows up in the /dev/scsi/* section, so I have no idea what to link it to...
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bertrand
n00b
Joined: 23 Sep 2002
Posts: 11
Location: Paris
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| Posted: Thu Nov 14, 2002 4:58 am Post subject: |
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What modules are loaded?
I know that if I don't have sd_mod loaded, the entries will not show up in /dev after running the rescan-scsi-bus.sh script.
Do a google search on the file name if don't really have the script. |
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mellofone
Apprentice
Joined: 13 Apr 2002
Posts: 287
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| Posted: Thu Nov 14, 2002 12:51 pm Post subject: |
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I have tried using sd_mod both compiled into the kernel as well as using it as a module. Same result, nothing.
I also downloaded and tried using the rescan-scsi-bus.sh script, and it detects nothing other then my CD-ROM and CD-RW drive.
One last thing I did try last night was having the USB device plugged in at bootup. It works like a charm! However, if I reboot without it plugged in, the /dev/sda will not show up.
The firewire drive, however, still does not work, even if it is plugged in at boot or not.
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bertrand
n00b
Joined: 23 Sep 2002
Posts: 11
Location: Paris
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| Posted: Fri Nov 15, 2002 5:49 am Post subject: |
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I just plugged my firewire drive and the sd_mod was loaded. I didn't get any entries for /dev/sd* before running the script.
Do you have the hotplug package install? I don't know if this really matter, but it's what I have.
My usb dig cam work the same as my firewire drive, I don't get any entries until I run the script.
What logs do you get from the kernel? Is you drive showing up in the log? |
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mellofone
Apprentice
Joined: 13 Apr 2002
Posts: 287
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| Posted: Tue Nov 19, 2002 5:24 pm Post subject: |
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After quite a bit of trial and error, I seemed to have gotten it all working perfectly. For some reason, as long as I have a device plugged into the USB2 device at boot, it works perfectly; even the firewire drive.
However, if I do not boot with the USB2 device plugged in, and then run the rescan-scsi-bus.sh, it locks up the terminal, and I cannot kill it, even from another terminal.
So it MOSTLY works, but it's a bit wonky. I can live with it this way, I just have to make sure the USB2 device is plugged in at boot...
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Chris Finch
Tux's lil' helper
Joined: 10 Mar 2003
Posts: 106
Location: Darmstadt, Germany
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| Posted: Wed Jul 16, 2003 4:48 pm Post subject: |
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I had issues with usb under 2.4.20 but now with a vanilla 2.4.21 it all workls very nicely. On an ASUS P4PE board, I use the modules
sd_mod
usbcore
usb-uhci
usb-storage
ehci-hcd
which I autoload at boot. Together with the modules for scsi-emulation of my ide cd-writer, these detect when I plug my portabe archos hd in, create /dev/sda1 and allow for fast usb 2.0 data transfer. I use the sync option for mounting, just to go sure. Having a usb device plugged at boot is not required. |
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