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Re: Hello, I have a question about XFS File System

To: Yongmin <dev.yongmin@xxxxxxxxx>
Subject: Re: Hello, I have a question about XFS File System
From: Dave Chinner <david@xxxxxxxxxxxxx>
Date: Fri, 7 Mar 2014 09:59:47 +1100
Cc: xfs@xxxxxxxxxxx
Delivered-to: xfs@xxxxxxxxxxx
In-reply-to: <195DE8C60CE24A62A71911FDE0B0DC97@xxxxxxxxx>
References: <195DE8C60CE24A62A71911FDE0B0DC97@xxxxxxxxx>
User-agent: Mutt/1.5.21 (2010-09-15)
On Thu, Mar 06, 2014 at 06:15:27PM +0900, Yongmin wrote:
> Hello.
> My name is Yongmin Park and I am a graduated student in Ajou University 
> (Korea).
> My research area is Digital Forensics.
> And this time i tried to understand the structure of XFS file system, because 
> XFS is one of the famous huge file system in these days.
> I already founded and read 'XFS Filesystem Structure 2nd Edition Revision 1' 
> on the Internet, which was written by Silicon Graphics Inc in 2006 and it is 
> really well written to understand.
> But the concentrated part of mine is "Deleted File Recovery", so the 
> Journaling part is really important for me,, but regretfully there are no 
> specific guide line about Journaling part...
> Also next version(maybe the 3re Edition) is not exsist for more than a 5 
> years.
> So is there no guide line for journaling part in XFS?
> How can i get them,, have I to buy them? or Is Analysing Source Cord only way 
> to study?

There is some documentation about some of the logging concepts and
design. eg:


But the only way to learn about the actual structure of the log is to
read the code and use xfs_logprint to study the contents of the log.


Dave Chinner

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