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Date: Mon, 28 May 2012 19:25:18 +0200 (CEST)
From: Alessio Focardi <alessiof@gmail.com>
To: freebsd-fs@freebsd.org
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Subject: Re: Millions of small files: best filesystem / best options
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> ZFS will work but its metadata size requirements will likely be twice
> the amount required by the actual file data.  It is not necessary to
> change the ZFS blocksize in order for it to work.

So if I understand correctly you are suggesting that I use as few directories as possible to save space (less metadata for them), but still a single file will weight more in metadata than it's size?

That suggests that I cant have no metadatata suballocation, in any case. Correct? So ... what's the size of metadata for a regular file, even empty? A full block?

Really tnx!