From mboxrd@z Thu Jan  1 00:00:00 1970
From: psusi@ubuntu.com (Phillip Susi)
Date: Wed, 25 Sep 2013 14:03:09 -0400
Subject: Finding a rogue IO source
Message-ID: <5243255D.2050804@ubuntu.com>
To: kernelnewbies@lists.kernelnewbies.org
List-Id: kernelnewbies.lists.kernelnewbies.org

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I have an unused disk ( no mounted filesystems ) that I put to sleep (
hdparm -Y ) and every 10 minutes, the link is reset to process a
request coming from a short lived process named "pool".  I think it is
a kernel work queue.  I inserted a dump_stack() but it stops when it
gets to the syscall and so doesn't trace back into what work item is
running.  How can I figure out what work item is doing this?

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