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From: Carlos Maiolino <cmaiolino@redhat.com>
To: "Ted Ts'o" <tytso@mit.edu>
Cc: Eric Sandeen <sandeen@redhat.com>,
	Andreas Dilger <adilger@dilger.ca>,
	linux-ext4@vger.kernel.org
Subject: Re: [PATCH] Add better example about how to compress e2image raw image
Date: Mon, 26 Sep 2011 16:36:08 -0300	[thread overview]
Message-ID: <20110926193608.GC3486@andromeda.usersys.redhat.com> (raw)
In-Reply-To: <20110926192358.GC3282@thunk.org>

Hi,

> If we decide that we're OK with not compressing qcow2, we could use
> qcow2.  But note that the qcow2 format is still very compressible ---
> it looks like it could do a better job removing zero blocks.  (I had a
> 256meg qcow2 e2image file compress down to 9 megs.)  Unfortunately we
> can't do stream compression with qcow2.
> 
> Long run I think we should make the qcow2 support better (by dropping
> all-zero blocks, and adding support for qcow2 to
> debugfs/dumpe2fs/e2fsck, and perhaps adding support for native
> compression).  Anyone looking for a project?  :-)
> 
> 						- Ted

Actually I'm pretty interested in contribute more to ExtFS, although I'm
not pretty much familiar with all Ext internals.
I've been contributing to GFS2 only. If you're not hurry to get it asap
and don't mind to receive some (maybe lots of) questions I can get this 
project (will need to learn more about ExtFS first :).

I can take sometime to implement it since my poor knowledge on ExtFS internals,
but, if you're ok with the above, I'm in.

-- 
--Carlos

  reply	other threads:[~2011-09-26 19:37 UTC|newest]

Thread overview: 11+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2011-09-23 18:47 [PATCH] Add better example about how to compress e2image raw image Carlos Maiolino
2011-09-23 20:24 ` Andreas Dilger
2011-09-23 20:51   ` Carlos Maiolino
2011-09-24 16:31     ` Ted Ts'o
2011-09-26 12:13       ` Carlos Maiolino
2011-09-26 12:22       ` Bernd Schubert
2011-09-26 16:25         ` Eric Sandeen
2011-09-26 16:24       ` Eric Sandeen
2011-09-26 19:23         ` Ted Ts'o
2011-09-26 19:36           ` Carlos Maiolino [this message]
2011-09-26 20:01           ` Amir Goldstein

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