On Sun, 21 Aug 2005, David Relson wrote:

> On Sun, 21 Aug 2005 12:03:56 -0400 (EDT)
> Alan Stern wrote:
> 
> ...[snip]...
> 
> > You can try using a 2.6.13 kernel.  The error-recovery procedure in 
> > usb-storage was changed, and it should be more robust.
> > 
> > Once tasks are stuck in a "D" state, there isn't much you can do about it.  
> > It's possible that unplugging the USB cable (or turning off the disk
> > drive) would free them up.  More useful would be to post a stack dump
> > (Alt-SysRq-T) showing exactly _where_ the processes are stuck.
> 
> Below are the stack dumps for 3 tasks, i.e. badblocks, usbview, and lsusb

My fault for not mentioning this before...  Those three tasks are stuck 
waiting for something else.  That something is likely to be one or more 
of khubd, usb-storage, or scsi_eh.  Can you post the stack dumps for those 
threads as well?

Alan Stern



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