Ubuntu
e2fsprogs package

  1. Bug #321528
  2. Comment #27

Comment 27 for bug 321528

Revision history for this message
Ben M. (bmhm) wrote : Re: Include ext4 defrag / defragment tool

When I take a look at this thread, I see a lot of ppl expecting too much of a defragmentation tool. Please keep in mind that almost all linux file systems will try to avoid fragmentation by themselves.

If you're really concerned or running a file server with a lot of small files (like e-mail), take a look at this article:
http://www.h-online.com/open/features/Fragmentation-746701.html

@Serhii
To measure *real* fragmentation, use their tool, posted in the german article: http://www.heise.de/open/artikel/Fragmentierung-224380.html - see their per script. I'm pretty sure tune2fs doesn't exclude device files etc.

Everyone else who is migrating to ext4 should stay with cp -a (or similar) until Ubuntu ships e2fsprogs.