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Date: Sun, 28 Oct 2012 18:51:10 -0400
From: "Theodore Ts'o" <tytso@mit.edu>
To: Justin Piszcz <jpiszcz@lucidpixels.com>
Cc: linux-kernel@vger.kernel.org
Subject: Re: 3.6.0 ext4 dump/filemap_fault?
Message-ID: <20121028225109.GA6931@thunk.org>
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On Sun, Oct 28, 2012 at 05:02:17PM -0400, Justin Piszcz wrote:
> Hello,
> 
> Any idea what happened here (during a backup)?

A sync system call took longer than two mintues.  Why that happened,
it's harder to say.  It's a warning, though, and not a fatal panic or
kernel oops.

How much memory do you have in your system?  What happened afterwards?
Did the system continue, and did the sync command (I presume you ran
"sync" from the command line?)  finally return to the command prompt?

    	    	 	 	 	   - Ted
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