Hello, I have a question about XFS File System

[Dave Chinner]

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:

http://oss.sgi.com/cgi-bin/gitweb.cgi?p=xfs/xfs-documentation.git;a=blob;f=design/xfs-delayed-logging-design.asciidoc

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.

Cheers,

Dave.
-- 
Dave Chinner
david at fromorbit.com