[Bug 462733] [NEW] prelink fragments the files

[Jérôme]

Public bug reported:

Binary package hint: prelink

The below command shows that the file fragmentation increases after the first activation of prelink:
sudo find / -xdev -type f -exec filefrag '{}' \; | grep -v "[01] extent"

I activated prelink by setting "yes" in /etc/default/prelink and running
the /etc/cron.daily/prelink task.

Why not reallocating the whole file when its content is changed ?
Moreover it would also defragment the files which were previously
fragmented.

Since the goal of prelink is to speedup the applications launch I think
that reallocating the file blocks isn't out of the scope of prelink.

ProblemType: Bug
Architecture: i386
Date: Wed Oct 28 17:38:55 2009
DistroRelease: Ubuntu 9.10
Package: prelink (not installed)
ProcEnviron:
 LANG=fr_FR.UTF-8
 SHELL=/bin/bash
ProcVersionSignature: Ubuntu 2.6.31-14.48-generic
SourcePackage: prelink
Uname: Linux 2.6.31-14-generic i686

** Affects: prelink (Ubuntu)
     Importance: Undecided
         Status: New


** Tags: apport-bug i386

-- 
prelink fragments the files
https://bugs.launchpad.net/bugs/462733
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