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Date:	Tue, 3 Jan 2012 16:45:27 -0500
From:	Greg Freemyer <greg.freemyer@...il.com>
To:	Sushil Mantri <sushilmantri@...il.com>
Cc:	linux-ext4@...r.kernel.org
Subject: Re: A stackable filesystem to trace low level filesystem operations

On Tue, Jan 3, 2012 at 4:20 PM, Sushil Mantri <sushilmantri@...il.com> wrote:
> Hi All,
>
> Sorry but this isn't a ext4 specific question but a general filesystem question.
>
> I am looking for a way to track filesystem level operation like
> operation(read/write), filename, offset, size of read/write, pid of
> the requesting process. The goal of my project is to collect such
> traces and understand access usage of directories and more. I would
> like to filter other operation like open,close, etc and requests to
> procfs, etc. There was a stackable file system earlier called Tracefs.
> It isn't supported anymore though. The original paper can be found
> here: filesystems.org/docs/tracefs-fast04/tracefs.ps
>
> Can you please suggest me what is the best option i have. I am
> currently looking at SystemTap.
>
> Thanks,
> Sushil

I think you're looking for either inotify or fanotify.

You might have better luck asking in the vfs mailinglist.

(linux-fsdevel@...r.kernel.org)

Greg
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