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Old July 20th, 2008   #1
solarwind
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fiDefrag
=== fiDefrag ===
Author: solarwind
Email: x.solarwind.x@gmail.com
Language: Python - Requires Python 2.4 or greater.
Dependencies:
Libraries:
* Standard Python libraries
* python-psyco - Not a requirement, but greatly improves performance.

Executables:
* find
* du
* filefrag
* rsync
* lsof


--- Introduction: ---

fiDefrag is a filesystem independent file defragmenter written in Python. It is loosely based on John Dong's pyFragTools
but is cleaner, faster, more efficient and newer. The structure of the code is also easier to understand and more organized.

It can be run on any Unix-like system which meets with the above dependencies. It was originally written to minimize the
file fragmentation on JFS filesystems but can be run on ANY Unix-like system with any filesystem which meets the above
dependencies. It was tested on and works very well on JFS filesystems. It's also useful on ext2 or ext3 filesystems and even ReiserFS.

--- Usage: ---

* fiDefrag requires root privileges to run.

sudo python fiDefrag.py -h | -a <dir> | -d <dir> [-p <passes>]

* Run sudo fiDefrag.py for more usage information.

--- Project: ---

* The project is hosted at https://launchpad.net/fidefrag
* The project is a bzr tree, so you can branch it by typing the following. This will always get the latest version.
$ bzr branch lp:fidefrag
* The project directory is an Eclipse Pydev project, so you can use Eclipse and Pydev to edit/test the project.
* If you have any fixes/improvements for the project, please register a blueprint or a bug at the launchpad project page.
* You can also submit a patch or push your own branch and request a merge.

--- What the output means: ---

Here is a sample output when I defragged my .mozilla folder.

Code:
=== Defragmenting /home/vg/.mozilla/ - 137M - 824 Files - 5 Passes ===

=== Building File List...
=== Building Extended File Info...
        824 /     824 - 100%

--- Pass 1 / 5 ---

   0.09 MB    4 P   44.26 P/MB 	 /home/vg/.mozilla/firefox/tfmpeoug.defau...
	--> Improved:    4.00 P -->    3.00 P
   0.03 MB    4 P  127.22 P/MB 	 /home/vg/.mozilla/firefox/tfmpeoug.defau...
	--> Fully defragmented:    4.00 P -->    1.00 P. Appending to blacklist.
   0.03 MB    4 P  128.35 P/MB 	 /home/vg/.mozilla/firefox/tfmpeoug.defau...
	--> Improved:    4.00 P -->    3.00 P
   0.03 MB    6 P  221.57 P/MB 	 /home/vg/.mozilla/firefox/tfmpeoug.defau...
	--> Fully defragmented:    6.00 P -->    1.00 P. Appending to blacklist.
   0.09 MB    3 P   32.99 P/MB 	 /home/vg/.mozilla/firefox/tfmpeoug.defau...
	--> No improvement    3.00 P -->    3.00 P
   0.08 MB   11 P  129.81 P/MB 	 /home/vg/.mozilla/firefox/tfmpeoug.defau...
	--> Fully defragmented:   11.00 P -->    1.00 P. Appending to blacklist.
   0.11 MB    3 P   26.97 P/MB 	 /home/vg/.mozilla/firefox/tfmpeoug.defau...
	--> No improvement    3.00 P -->    4.00 P
   0.02 MB    3 P  134.38 P/MB 	 /home/vg/.mozilla/firefox/tfmpeoug.defau...
	--> Fully defragmented:    3.00 P -->    1.00 P. Appending to blacklist.
   0.13 MB    4 P   30.71 P/MB 	 /home/vg/.mozilla/firefox/tfmpeoug.defau...
	--> Improved:    4.00 P -->    3.00 P
   0.28 MB    3 P   10.67 P/MB 	 /home/vg/.mozilla/firefox/tfmpeoug.defau...
	--> No improvement    3.00 P -->    3.00 P
   0.08 MB    6 P   70.76 P/MB 	 /home/vg/.mozilla/firefox/tfmpeoug.defau...
	--> Fully defragmented:    6.00 P -->    1.00 P. Appending to blacklist.
   0.10 MB    3 P   28.86 P/MB 	 /home/vg/.mozilla/firefox/tfmpeoug.defau...
	--> No improvement    3.00 P -->    3.00 P
   0.32 MB    8 P   25.01 P/MB 	 /home/vg/.mozilla/firefox/tfmpeoug.defau...
	--> Fully defragmented:    8.00 P -->    1.00 P. Appending to blacklist.
   0.03 MB    3 P   99.57 P/MB 	 /home/vg/.mozilla/firefox/tfmpeoug.defau...
	--> No improvement    3.00 P -->    3.00 P
   0.05 MB    7 P  154.30 P/MB 	 /home/vg/.mozilla/firefox/tfmpeoug.defau...
	--> Fully defragmented:    7.00 P -->    1.00 P. Appending to blacklist.
   0.02 MB    3 P  179.22 P/MB 	 /home/vg/.mozilla/firefox/tfmpeoug.defau...
	--> No improvement    3.00 P -->    3.00 P
  12.11 MB   26 P    2.15 P/MB 	 /home/vg/.mozilla/firefox/tfmpeoug.defau...
	--> No improvement   26.00 P -->   27.00 P
   0.13 MB    7 P   55.88 P/MB 	 /home/vg/.mozilla/firefox/tfmpeoug.defau...
	--> Improved:    7.00 P -->    3.00 P
   2.31 MB   14 P    6.07 P/MB 	 /home/vg/.mozilla/firefox/tfmpeoug.defau...
	--> Improved:   14.00 P -->    5.00 P
   0.31 MB    6 P   19.16 P/MB 	 /home/vg/.mozilla/firefox/tfmpeoug.defau...
	--> Improved:    6.00 P -->    3.00 P

--- Pass 2 / 5 ---

   0.09 MB    3 P   33.19 P/MB 	 /home/vg/.mozilla/firefox/tfmpeoug.defau...
	--> Fully defragmented:    3.00 P -->    1.00 P. Appending to blacklist.
   0.03 MB    3 P   96.26 P/MB 	 /home/vg/.mozilla/firefox/tfmpeoug.defau...
	--> No improvement    3.00 P -->    3.00 P
   0.09 MB    3 P   32.99 P/MB 	 /home/vg/.mozilla/firefox/tfmpeoug.defau...
	--> Fully defragmented:    3.00 P -->    1.00 P. Appending to blacklist.
   0.11 MB    3 P   26.97 P/MB 	 /home/vg/.mozilla/firefox/tfmpeoug.defau...
	--> No improvement    3.00 P -->    4.00 P
   0.13 MB    3 P   23.03 P/MB 	 /home/vg/.mozilla/firefox/tfmpeoug.defau...
	--> Fully defragmented:    3.00 P -->    1.00 P. Appending to blacklist.
   0.28 MB    3 P   10.67 P/MB 	 /home/vg/.mozilla/firefox/tfmpeoug.defau...
	--> No improvement    3.00 P -->    4.00 P
   0.10 MB    3 P   28.86 P/MB 	 /home/vg/.mozilla/firefox/tfmpeoug.defau...
	--> No improvement    3.00 P -->    3.00 P
   0.03 MB    3 P   99.57 P/MB 	 /home/vg/.mozilla/firefox/tfmpeoug.defau...
	--> Fully defragmented:    3.00 P -->    1.00 P. Appending to blacklist.
   0.02 MB    3 P  179.22 P/MB 	 /home/vg/.mozilla/firefox/tfmpeoug.defau...
	--> No improvement    3.00 P -->    3.00 P
  12.11 MB   26 P    2.15 P/MB 	 /home/vg/.mozilla/firefox/tfmpeoug.defau...
	--> Improved:   26.00 P -->   25.00 P
   0.13 MB    3 P   23.95 P/MB 	 /home/vg/.mozilla/firefox/tfmpeoug.defau...
	--> No improvement    3.00 P -->    3.00 P
   2.31 MB    5 P    2.17 P/MB 	 /home/vg/.mozilla/firefox/tfmpeoug.defau...
	--> No improvement    5.00 P -->    7.00 P
   0.31 MB    3 P    9.58 P/MB 	 /home/vg/.mozilla/firefox/tfmpeoug.defau...
	--> No improvement    3.00 P -->    3.00 P

--- Pass 3 / 5 ---

   0.03 MB    3 P   96.26 P/MB 	 /home/vg/.mozilla/firefox/tfmpeoug.defau...
	--> Fully defragmented:    3.00 P -->    1.00 P. Appending to blacklist.
   0.11 MB    3 P   26.97 P/MB 	 /home/vg/.mozilla/firefox/tfmpeoug.defau...
	--> Too many consecutive no-improvements. Appending to blacklist.
   0.28 MB    3 P   10.67 P/MB 	 /home/vg/.mozilla/firefox/tfmpeoug.defau...
	--> Too many consecutive no-improvements. Appending to blacklist.
   0.10 MB    3 P   28.86 P/MB 	 /home/vg/.mozilla/firefox/tfmpeoug.defau...
	--> Too many consecutive no-improvements. Appending to blacklist.
   0.02 MB    3 P  179.22 P/MB 	 /home/vg/.mozilla/firefox/tfmpeoug.defau...
	--> Too many consecutive no-improvements. Appending to blacklist.
  12.11 MB   25 P    2.06 P/MB 	 /home/vg/.mozilla/firefox/tfmpeoug.defau...
	--> No improvement   25.00 P -->   25.00 P
   0.13 MB    3 P   23.95 P/MB 	 /home/vg/.mozilla/firefox/tfmpeoug.defau...
	--> No improvement    3.00 P -->    3.00 P
   2.31 MB    5 P    2.17 P/MB 	 /home/vg/.mozilla/firefox/tfmpeoug.defau...
	--> No improvement    5.00 P -->    5.00 P
   0.31 MB    3 P    9.58 P/MB 	 /home/vg/.mozilla/firefox/tfmpeoug.defau...
	--> No improvement    3.00 P -->    3.00 P

--- Pass 4 / 5 ---

  12.11 MB   25 P    2.06 P/MB 	 /home/vg/.mozilla/firefox/tfmpeoug.defau...
	--> No improvement   25.00 P -->   25.00 P
   0.13 MB    3 P   23.95 P/MB 	 /home/vg/.mozilla/firefox/tfmpeoug.defau...
	--> Too many consecutive no-improvements. Appending to blacklist.
   2.31 MB    5 P    2.17 P/MB 	 /home/vg/.mozilla/firefox/tfmpeoug.defau...
	--> Too many consecutive no-improvements. Appending to blacklist.
   0.31 MB    3 P    9.58 P/MB 	 /home/vg/.mozilla/firefox/tfmpeoug.defau...
	--> Too many consecutive no-improvements. Appending to blacklist.

--- Pass 5 / 5 ---

  12.11 MB   25 P    2.06 P/MB 	 /home/vg/.mozilla/firefox/tfmpeoug.defau...
	--> Too many consecutive no-improvements. Appending to blacklist.


=== DEFRAG OPERATION COMPLETE.
Let's take this line for example:
Note that the term "fragment" and "part (P)" have the same meaning as far as we're concerned and refer to the number of fragments, parts or pieces a certain file is split into.
Quote:
0.05 MB 7 P 154.30 P/MB /home/vg/.mozilla/firefox/tfmpeoug.defau...
The first number shows the size of the file (0.05 MB). The second number (7 P) shows that this file has 7 fragments. The third number (154.30 P/MB) shows that this file has an average per megabyte fragmentation of 154.30 fragments per megabyte.
The line after it:
Quote:
--> Improved: 7.00 P --> 3.00 P
Shows the result of the defragmentation process for that file. In this case, the file has improved from 7 fragments to 3 fragments. This is a pretty good improvement, but the program think that it can do better so it so it defragments it again on the next pass.
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Last edited by solarwind; July 23rd, 2008 at 03:55 PM..
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