Ext2frag is a project mainly written in C++, it's free.
Program to measure fragmentation of an EXT2 filesystem
This program calculates fragmentation statistics about the ext2 file system. The meaning of reported numbers is explained in the accompanying man-page which may be formatted with the following commands:
groff -Tascii -mdoc ext2frag.1 | more
(try using nroff if you don't have groff).
You need to have installed cmake (www.cmake.org), boost (www.boost.org) and libext2fs library (part of e2fsprogs) and corresponding development packages. The following procedure builds the program:
$ cmake . $ make
The ext2frag program is left in the working directory. The configuration procedure looks for the necessary libraries only in standard places: /usr/{include,lib} and /usr/local/{include,lib}. If you have packages installed at other places, the configuration will fail. In that case, edit the CMakeLists.txt file and repeat the steups above.
Some ideas for future enhancements:
ext2frag.cc, (c) 2008 Zeljko Vrba [email protected]
Permission is hereby granted, free of charge, to any person obtaining a copy of this software and associated documentation files (the "Software"), to deal in the Software without restriction, including without limitation the rights to use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of the Software, and to permit persons to whom the Software is furnished to do so, subject to the following conditions:
The above copyright notice and this permission notice shall be included in all copies or substantial portions of the Software.
THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.