linux-ext4 - Re: What happened to e4defrag relevant file and free space defrag?

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Date:	Wed, 03 Sep 2014 14:26:07 -0500
From:	Joakim Ziegler <joakim@...minalmx.com>
To:	Theodore Ts'o <tytso@....edu>
CC:	linux-ext4@...r.kernel.org, Akira Fujita <a-fujita@...jp.nec.com>
Subject: Re: What happened to e4defrag relevant file and free space defrag?

On 03/09/14, 14:02, Theodore Ts'o wrote:
> On Wed, Sep 03, 2014 at 01:40:42PM -0500, Joakim Ziegler wrote:
>> On 23/08/14, 6:04, Joakim Ziegler wrote:
>>>
>>> Also, about free space defrag, it says:
>>>
>>> "Implement free space defragmentation (e4defrag -f). We might implement this
>>> feature when the relevant defrag development is completed."
>
> The e4defrag is in e2fsprogs, and the code is still getting maintained
> and improved.  Dmitry Monakhov has in particular added a lot of
> "torture tests", and found a number of race conditions in the
> underlying kernel code.  He recently also sent a code refactor of the
> kernel code which significantly improved it and (shrank the size of
> ext4 by 550 lines of code).
>
> That being said, there hasn't been any real feature development for
> e4defrag in quite some time.  There has been some discussion about
> what the kernel API's might be to support this feature, but there has
> never been a finalized API proposal, let alone an implementation.

Yeah, I was mostly curious about the relevant file defrag, since Akira's 
presentation from a few years back said that there were patches in review, and 
it would, I think, largely solve my problem.

-- 
Joakim Ziegler  -  Supervisor de postproducción  -  Terminal
joakim@...minalmx.com   -   044 55 2971 8514   -   5264 0864
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