From mboxrd@z Thu Jan  1 00:00:00 1970
Message-ID: <40b85517d889fadc8df2c782817f6bef@quanstro.net>
From: erik quanstrom <quanstro@quanstro.net>
Date: Fri, 10 Aug 2007 08:26:45 -0400
To: weigelt@metux.de, 9fans@cse.psu.edu
Subject: Re: [9fans] FS to skip/put-together duplicate files
In-Reply-To: <20070810113921.GE18939@nibiru.local>
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> I'm host a lot of web applications which share 99% of their code.
> Disk space is not the issue, but bandwidth on remote backup. 
> So my idea is to let an filesystem automatically link together
> equal files in the storage, but present them as separate ones.
> Once an file gets changed, it will be unlinked/copied automatically.
> 
> Is there already such an filesystem ?

no.

however there are updatedb/compactdb which can be used to
create a list of changed files and replica/applylog which can
be used to apply them.

i used these tools to copy history from one kenfs to a new one.
i actually used cphist (/n/sources/patch/saved/cphist) and not
applylog.

you could also use the log on the generating machine to build
a mkfs archive and compress that, ftp it and apply it on the
other end.

- erik