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From: Nicolas Pitre <nico@cam.org>
To: Peter Stahlir <peter.stahlir@googlemail.com>
Cc: Johannes Schindelin <Johannes.Schindelin@gmx.de>, git@vger.kernel.org
Subject: Re: Git as a filesystem
Date: Fri, 21 Sep 2007 09:22:40 -0400 (EDT)	[thread overview]
Message-ID: <alpine.LFD.0.9999.0709210912120.32185@xanadu.home> (raw)
In-Reply-To: <fbe8b1780709210441n281248dbh5ba9934d09d6bbfc@mail.gmail.com>

On Fri, 21 Sep 2007, Peter Stahlir wrote:

> This is was I was looking for. My motivation is whether it is possible
> to run a system, for example Debian on a computer on top of gitfs,
> and then have a huge mirror on it, for example a complete 252GB
> Debian mirror as space efficient as possible.
> 
> I wonder how big a deltified Debian mirror in one pack file would be. :)

It would be just as big as the non gitified storage on disk.

The space saving with git comes from efficient delta storage of 
_versioned_ files, i.e. multiple nearly identical versions of the same 
file where the stored delta is only the small difference between the 
first full version and subsequent versions.  Unless you plan on storing 
many different Debian versions together, you won't benefit from any 
delta at all. And since Debian packages are already compressed, git 
won't be able to compress them further.

So don't waste your time.


Nicolas

  parent reply	other threads:[~2007-09-21 13:22 UTC|newest]

Thread overview: 19+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2007-09-21 10:51 Git as a filesystem Peter Stahlir
2007-09-21 11:11 ` Johannes Schindelin
2007-09-21 11:41   ` Peter Stahlir
2007-09-21 12:53     ` Karl Hasselström
2007-09-21 13:28       ` Peter Stahlir
2007-09-21 13:41         ` Michael Poole
2007-09-21 14:38         ` jlh
2007-09-21 17:29         ` Dmitry Potapov
2007-09-21 23:56           ` Martin Langhoff
2007-09-22  3:09             ` Sam Vilain
2007-09-21 13:22     ` Nicolas Pitre [this message]
2007-09-21 13:35       ` Peter Stahlir
2007-09-21 13:45         ` Nicolas Pitre
2007-09-21 15:46         ` Christian von Kietzell
2007-09-21 23:33       ` Eric Wong
2007-09-21 23:42         ` Johannes Schindelin
2007-09-22  2:06           ` Eric Wong
2007-09-22 12:06             ` Johannes Schindelin
2007-09-21 14:22   ` Miklos Vajna

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