Re: [linux-usb-devel] 2.6: USB disk unusable level of data corruption

[David Brownell <david-b@pacbell.net>]

On Sunday 06 February 2005 7:59 am, Giuseppe Bilotta wrote:
> 
> I have a MAGNEX/ViPower USB/FirWire external HD enclosure. I 
> found that it works pretty fine (albeit slowly) when connected 
> to the USB 1.1 ports built in my Dell Inspiron 8200, but trying 
> to connect it via the Hamlet PCMCIA USB2 Card Adapter doesn't 
> work (it seems it gets assigned minors 1,2,3,4,5,6,... and so 
> on forever until I unplug it).

What do you mean "minors"?  Addresses or actual /dev/sdN numbers?

If it's addresses, that would be an an enumeration problem.  Some
recent changes have caused prolems there, 2.6.11-rc3-mm2 ought to
have a patch making it better.  (Well, working around one of the
two problems that'd suggest.)

If it's actual /dev/sdN numbers, that would seem to be an issue
more at the level of usb-storage.  Quite possibly related to the
bugs you didn't exactly detail (below).

- Dave


> OTOH, I'm not sure if it's a PCMCIA adapter problem or USB2 
> enclosure problem. Indeed, if I don't load the EHCI modules, 
> and thus limit myself to the USB1.1 capabilities of the PCMCIA 
> adapters, I get other errors (I'll have to write a cleaner bug 
> report on this. And try the PCMCIA card with some other USB 
> device. Wish I could use my softmodem under Linux :(). (Using 
> kernel 2.6.10-3 from Debian.)