On Wed, 10 Sep 2003, Olaf Hering wrote:

> Here is the log from an intel box.
> 
> I heard it doesnt even work under Windows, sometimes it locks up the
> box. Thats not very promising....

No, it isn't.  :-(

> usb-storage: GetMaxLUN command result is 0, data is 0

That looks better.

> usb-storage: Transport: Bulk
> usb-storage: Protocol: Transparent SCSI
> usb-storage: *** thread sleeping.
> scsi1 : SCSI emulation for USB Mass Storage devices
> usb-storage: queuecommand() called
> usb-storage: *** thread awakened.
> usb-storage: Command INQUIRY (6 bytes)
> usb-storage: 12 00 00 00 ff 00 d8 ce ac 88 a5 ce
> usb-storage: Bulk command S 0x43425355 T 0x1 Trg 0 LUN 0 L 255 F 128 CL 6

So does that.

> usb-storage: Bulk command transfer result=0
> usb-storage: usb_stor_transfer_partial(): xfer 255 bytes
> usb-storage: usb_stor_bulk_msg() returned 0 xferred 254/255
> usb-storage: Bulk data transfer result 0x1
> usb-storage: Attempting to get CSW...
> usb-storage: Bulk status result = 0
> usb-storage: Bulk status Sig 0x0 T 0x0 R 0 Stat 0x0

That's definitely wrong.  Both the Sig and T(ag) values aren't set
correctly.  Looks like a device problem.

> usb-storage: Bulk logical error
> usb-storage: -- transport indicates error, resetting
> usb-storage: Bulk reset requested
> usb-storage: command_abort() called
> usb-storage: usb_stor_clear_halt: result=0
> usb-storage: usb_stor_clear_halt: result=0
> usb-storage: Bulk soft reset completed
> usb-storage: scsi cmd done, result=0x70000
> usb-storage: scsi command aborted
> usb-storage: *** thread sleeping.
> usb-storage: queuecommand() called
> usb-storage: *** thread awakened.
> usb-storage: Command TEST_UNIT_READY (6 bytes)
> usb-storage: 00 00 00 00 00 00 d8 ce ac 88 a5 ce
> usb-storage: Bulk command S 0x43425355 T 0x2 Trg 0 LUN 0 L 0 F 0 CL 6
> usb-storage: Bulk command transfer result=0
> usb-storage: Attempting to get CSW...
> usb-storage: Bulk status result = 0
> usb-storage: Bulk status Sig 0x0 T 0x0 R 0 Stat 0x0

Again, the same kind of error.

> usb-storage: Bulk logical error
> usb-storage: -- transport indicates error, resetting
> usb-storage: Bulk reset requested
> usb-storage: usb_stor_clear_halt: result=0
> usb-storage: usb_stor_clear_halt: result=0
> usb-storage: Bulk soft reset completed
> usb-storage: scsi cmd done, result=0x70000
> usb-storage: *** thread sleeping.
> usb-storage: device_reset() called
> usb-storage: Bulk reset requested
> usb-storage: usb_stor_clear_halt: result=0
> usb-storage: usb_stor_clear_halt: result=0
> usb-storage: Bulk soft reset completed
> usb-storage: queuecommand() called
> usb-storage: *** thread awakened.
> usb-storage: Command TEST_UNIT_READY (6 bytes)
> usb-storage: 00 00 00 00 00 00 d8 ce ac 88 a5 ce
> usb-storage: Bulk command S 0x43425355 T 0x3 Trg 0 LUN 0 L 0 F 0 CL 6
> usb-storage: command_abort() called
> usb-storage: Bulk command transfer result=-104
> usb-storage: -- transport indicates command was aborted
> usb-storage: Bulk reset requested

And finally the device seems to have timed out, maybe crashed.  Perhaps it 
uses some non-standard variation of the protocol?

Alan Stern



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