[ale] usb-storage

[Chris Fowler]

I got it working on 2.4 with a CD-ROM.  But It seems like Linux wil not recognize any HDD I put into the
box.  I'm starting to think I was ripped off.  The unit I'm using is
an OnSpec External IDE -> USB and is using chipset 90C36.  I am getting a little scared in Linux
When I get error message at each load of CD device, "WARNING: Data integrity not assured"Â  Do I really
want to burn CD's on USB?  I really wanted to use it for extra storage but it seems I may be out of luck.


Chris



-----Original Message-----
From: Dunlap, Randy [mailto:randy.dunlap at intel.com]
To: ale at ale.org
Sent: Friday, April 20, 2001 11:20 AM
To: 'ale at ale.org'
Subject: RE: [ale] usb-storage



From: Chris Fowler [mailto:ChrisF at computone.com]
To: ale at ale.org


I just connected an 8GB HDD to my linux box using an external USB -> IDE
box.  When 2.2.16-20 (RH 7.0) boots, It sees my USB ports but stated that
the device
connected is not supported by any loaded driver.  I then excuted "modprobe
usb-storage' and the kernel message was 'USB storeage support registered'.
I did
not see mention of the HDD.  Is there a missing step?  What device nodes do
I use to partition and format this drive? 
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~


usb-storage support in Linux 2.2 is there, but the usb-storage
maintainer actually wishes that it were only in 2.4.
USB mass storage uses SCSI transport and requires lots of the
SCSI subsystem to be in place, but the Linux SCSI subsystem
changed a lot between 2.2 and 2.4.  usb-storage is really
written for Linux 2.4, not 2.2.


After that, USB->IDE controller support still may not work for some
controllers, even in Linux 2.4.  It is still being worked on a
good bit.


It would help to see the contents of /proc/bus/usb/devices when you
have this device attached.  That would provide the device
descriptors.


Some works in progress for USB IDE are:
http://www.netcologne.de/~nc-reisinjo/datafab/datafab.html
and
http://bravin.home.cern.ch/bravin/usbide.html
plus whatever is already in the Linux 2.4 kernel.


~Randy


PS: The right place to ask about this is
linux-usb-users at lists.sourceforge.net IMO.


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