Dreamplug and eSATA problems

Dave Hayes dave at jetcafe.org
Mon Nov 12 20:48:32 UTC 2012


On 11/12/12 12:13, Ian Lepore wrote:
> It suddenly occurs to me that I was reading/writing the raw
> unpartitioned device.  I wonder if the problem for some reason only
> shows up when you do filesystem access?  It might be interesting for you
> to try a basic IO test such as
>
>    dd if=/dev/zero of=/some_file bs=1m count=10
>
> then
>
>    dd if=/some_file bs=1m | hd -C
>
> and you should see output from hd that summarizes that everything was
> the same as the first line (zeroes), or if there are glitches they'll
> show as additional lines of output from hd.

I tried basic file copy tests and they worked. Simple things like:

   cp bigfile bigfile2
   sha256 bigfile bigfile2

My theory is that said corruption only happens when you try to use the 
network interface and the eSATA at once.

I used both fetch and ftp in my tests just to be sure. Any file transfer 
I did from the network to the eSATA device causes this corruption.
-- 
Dave Hayes - Consultant - Altadena CA, USA - dave at jetcafe.org
 >>>> *The opinions expressed above are entirely my own* <<<<

A free society is one where it is safe to be unpopular.
                                           -- Adlai Stevenson


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