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From: Hans Petter Selasky <hselasky@c2i.net>
To: freebsd-current@freebsd.org
Subject: Re: ZFS + usb in trouble?
Date: Mon, 21 Jan 2013 22:36:04 +0100
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On Monday 21 January 2013 22:17:19 Pawel Jakub Dawidek wrote:
> I used wrong Hans' login, resending with the proper e-mail.
> 

Hi,

You should try to use some tools to write some random data and read it back 
and see if the data is the same, at /dev/daX level. The USB wrapper for SCSI 
is very simple and it passes commands directly from CAM to the hardware. I 
would be surprised if data was corrupted at this stage.

--HPS