Re: SCSI trow USB-STORAGE or SBP2 Debug for buggy device Kernels 2.6.X

[Stefan Richter <stefanr@s5r6.in-berlin.de>]

Gustavo Guillermo Pérez wrote:
> El Lunes, 24 de Abril de 2006 17:02, James Bottomley escribió:
>>So, I could change the long write in progress to a retry.  However, I
>>suspect the reason we got that return is because this device is untagged
>>(doesn't accept multiple commands at once) and perhaps a better fix
>>might be to reduce the queue depth down to one to prevent more than one
>>command being outstanding at any one time.
> 
> It would not be better to include some handling on the black list? it means 
> doing a new BLACK_CONST to handle just this special case?.

For now you can and should test a queue depth of one via sbp2:
# modprobe sbp2 serialize_io=1

But isn't usb-storage's queue depth already 1?

Dou you use all the different Pioneer drives with the same 
IDE/USB+FireWire bridge or do you have different bridges?
-- 
Stefan Richter
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http://arcgraph.de/sr/
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