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Message-ID: <4D4B06AF.6000106@redhat.com>
Date:	Thu, 03 Feb 2011 13:49:03 -0600
From:	Eric Sandeen <sandeen@...hat.com>
To:	Michael Rubin <mrubin@...gle.com>
CC:	Jan Kara <jack@...e.cz>, lsf-pc@...ts.linuxfoundation.org,
	linux-fsdevel@...r.kernel.org, linux-ext4@...r.kernel.org,
	Andrew Morton <akpm@...ux-foundation.org>
Subject: Re: [LSF/MM TOPIC] Drop ext2/ext3 codebase? When?

On 2/3/11 1:32 PM, Michael Rubin wrote:
> On Thu, Feb 3, 2011 at 7:08 AM, Eric Sandeen <sandeen@...hat.com> wrote:
>> If we can have a real plan for moving in this direction though, I'd
>> support it.  I'm just not sure how we get enough real testing under
>> our belts to be comfortable with dropping ext[23], especially as
>> most distros now default to ext4 anyway.
> 
> Eric what sort of testing are you looking for?

Anything, the more formal or more widespread the better.

I just don't think it's used much this way today...

We can start with xfstests etc but I'd be more concerned about
unexpected behavioral or performance changes.

> I admit I like having ext2 around for comparisons in bug situations.
> It really helps to isolate the problem area. How painful is the
> upkeep?

since ext4 was merged, about 450 commits to ext2 & ext3 files.

since 2.6.32, about 150 commits.

Translating that into pain units, I dunno.  In distro-land, I often
have bugfixes that need to hit 2 or 3 of the filesystems as well.

-Eric

> mrubin
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