"OK, you may ask, what's the big deal? After all, ext2 filesystems take a
long time to exhibit signs of fragmentation. However,would argue that
fragmentation is still a big problem, because although ext2 does not get
fragmented easily, fragmentation is a one-way, cumulative process. That is,
while ext2 fragments slowly, it cannot defragment itself. In other words,
any often-modified ext2 filesystem will gradually get more and more
fragmented, and thus slower. Even worse, there are no production-quality
ext2 filesystem defragmenting programs currently available. This means that
fragmentation is guaranteed to get worse over time, and the only way to fix
it is to wipe the filesystem clean, and restore all the original files from
a backup. That's a pretty involved and time-consuming process. So, how can
the problem of fragmentation be dramatically reduced and contained? I'll
cover all the juicy details in my next tip."
(extrait de :
http://www-4.ibm.com/software/developer/library/partitiontip.html?dwzone=linux
)
En ce qui concerne une �ventuelle technique d'allocation du disque sans
fragmentation, on peut supposer que s'il en existerait une, �a se saurait,
et que plus rien d'autre ne serait utilis� nulle part :-| Ne confondons pas
technique informatique et techniques publicitaires :-)
