Status of ext4 online defrag?

[Clemens Eisserer]

Hello,

Does anybody know what the current state of ext4 online defrag is?

Although ext4 does an excellent job in avoiding fragmentation,
sometimes it still happens, e.g. with firefox's sqlite database
which made using firefox horrible because disk-io took ages (and took
also some time until I found out whats the problem):

> [ce@localhost ~]$ filefrag /fc8/home/ce/.mozilla/firefox/default/places.sqlite
> /fc8/home/ce/.mozilla/firefox/default/places.sqlite: 1730 extents found, perfection would be 1 extent

Thats 1730 extents for a 75mb file :-/
Sure I can copy it between my partitions, but I would really prefer a
defrag tool ;)

Thank you in advance, Clemens
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