2005-02-06 16:11:51

by Giuseppe Bilotta

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

John Stoffel wrote:
>
> I haven't tried lately, but my USB/FireWire enclosure never worked
> with Linux (or WinNT under firewire, sigh...) so I haven't touched it
> in months. Money down the drain.

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).

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.)

--
Giuseppe "Oblomov" Bilotta

Can't you see
It all makes perfect sense
Expressed in dollar and cents
Pounds shillings and pence
(Roger Waters)


2005-02-07 04:02:08

by David Brownell

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

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.)