Re: anyway to re-connect disk after "rejecting I/O to dead device" message in dmesg without cycling power to the device?

[t35t0r <t35t0r@xxxxxxxxx>]

On 6/26/06, Alan Stern <stern@xxxxxxxxxxxxxxxxxxx> wrote:
> On Mon, 26 Jun 2006, t35t0r wrote:
>
> > Hi,
> >
> > Is there anyway to re-connect a USB disk (without cycling power to the
> > device) after "rejecting I/O to dead device" messages crop up under
> > dmesg or /var/log/messages?
>
> It depends on exactly what's going wrong.  If the device's firmware has
> crashed badly then you will have to cycle the device's power supply.  If
> there's a hardware incompatibility between the computer's USB controller
> and the device's then you won't be able to connect them at all.
>

Cycling the power always works, but since I'm in another building or
miles away from the computer and drive at times it's not an option.

>         rmmod usb-storage ; modprobe usb-storage
>
> If you have more than one USB mass-storage device, this will reset all of
> them.  There are ways to do the same thing to just a single device, but
> there's no guarantee that it will work.

What's the similar method for trying that on only a single device? I
have another 250gb lacie drive which I cannot "cycle" at the moment
since an application is writing data to it.

In any case, if it involves reloading the modules I would have to
re-compile the kernel with the USB drivers as modules.

TIA

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