filesystem fragmentation stats?

[evilninja]

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Damian Menscher schrieb:
> Let me preface this by saying "Yes, I know *nix filesystems don't need
> to worry about fragmentation".

this was discussed *very* and again in june by Theodore:

https://www.redhat.com/archives/ext3-users/2005-June/msg00026.html

> That said, is there a way to check the overall level of fragmentation of
> a live ext3 filesystem?  I know about filefrag, but that's for specific
> files.  And I think e2fsck tells you, but only if you take the
> filesystem offline for the scan. 

"tune2fs -l" tells you about "Fragments per group", and "fsck.ext2 -nv"
opens the fs read-only and print some nice stats after that.


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