From: Dave Chinner <david@fromorbit.com>
To: Ben Myers <bpm@sgi.com>
Cc: Eric Sandeen <sandeen@redhat.com>, Theodore Ts'o <tytso@mit.edu>,
xfs-oss <xfs@oss.sgi.com>,
linux-ext4@vger.kernel.org, Eric Whitney <enwlinux@gmail.com>
Subject: Re: possible dev branch regression - xfstest 285/1k
Date: Tue, 19 Mar 2013 12:47:18 +1100 [thread overview]
Message-ID: <20130319014718.GV6369@dastard> (raw)
In-Reply-To: <20130318231233.GQ6369@dastard>
On Tue, Mar 19, 2013 at 10:12:33AM +1100, Dave Chinner wrote:
> On Mon, Mar 18, 2013 at 03:41:33PM -0500, Ben Myers wrote:
> > Hi Eric,
> >
> > On Mon, Mar 18, 2013 at 12:34:59PM -0500, Eric Sandeen wrote:
> > > On 3/18/13 12:09 PM, Theodore Ts'o wrote:
> > > > On Mon, Mar 18, 2013 at 11:10:51AM -0500, Eric Sandeen wrote:
> > still run with default settings.
>
> And when the default settings change, or some other bug fix comes
> along?
>
> So, let's step back a moment and ask ourselves what the test is
> actaully trying to test. zero-out is not what it is trying to test,
> nor is it trying to test specific file layouts. This is a basic
> *defragmenter* sanity test. SO, we're testing 2 things:
Sorry about this - I've mixed up my threads about ext4 having
problems with zero-out being re-enabled. I thought this was a
cross-post of the 218 issue....
However, the same reasoning can be applied to 285 - the file sizes,
the size of the holes and the size of the data is all completely
arbitrary. If we make the holes in the files larger, then the
zero-out problem simply goes away.
Cheers,
Dave.
--
Dave Chinner
david@fromorbit.com
WARNING: multiple messages have this Message-ID (diff)
From: Dave Chinner <david@fromorbit.com>
To: Ben Myers <bpm@sgi.com>
Cc: Eric Whitney <enwlinux@gmail.com>,
Eric Sandeen <sandeen@redhat.com>,
linux-ext4@vger.kernel.org, Theodore Ts'o <tytso@mit.edu>,
xfs-oss <xfs@oss.sgi.com>
Subject: Re: possible dev branch regression - xfstest 285/1k
Date: Tue, 19 Mar 2013 12:47:18 +1100 [thread overview]
Message-ID: <20130319014718.GV6369@dastard> (raw)
In-Reply-To: <20130318231233.GQ6369@dastard>
On Tue, Mar 19, 2013 at 10:12:33AM +1100, Dave Chinner wrote:
> On Mon, Mar 18, 2013 at 03:41:33PM -0500, Ben Myers wrote:
> > Hi Eric,
> >
> > On Mon, Mar 18, 2013 at 12:34:59PM -0500, Eric Sandeen wrote:
> > > On 3/18/13 12:09 PM, Theodore Ts'o wrote:
> > > > On Mon, Mar 18, 2013 at 11:10:51AM -0500, Eric Sandeen wrote:
> > still run with default settings.
>
> And when the default settings change, or some other bug fix comes
> along?
>
> So, let's step back a moment and ask ourselves what the test is
> actaully trying to test. zero-out is not what it is trying to test,
> nor is it trying to test specific file layouts. This is a basic
> *defragmenter* sanity test. SO, we're testing 2 things:
Sorry about this - I've mixed up my threads about ext4 having
problems with zero-out being re-enabled. I thought this was a
cross-post of the 218 issue....
However, the same reasoning can be applied to 285 - the file sizes,
the size of the holes and the size of the data is all completely
arbitrary. If we make the holes in the files larger, then the
zero-out problem simply goes away.
Cheers,
Dave.
--
Dave Chinner
david@fromorbit.com
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next prev parent reply other threads:[~2013-03-19 1:47 UTC|newest]
Thread overview: 25+ messages / expand[flat|nested] mbox.gz Atom feed top
2013-03-15 22:28 possible dev branch regression - xfstest 285/1k Eric Whitney
2013-03-16 2:32 ` Zheng Liu
2013-03-16 15:09 ` Zheng Liu
2013-03-17 3:06 ` Theodore Ts'o
2013-03-17 6:13 ` Zheng Liu
2013-03-18 16:10 ` Eric Sandeen
2013-03-18 16:54 ` gnehzuil.liu
2013-03-18 17:09 ` Theodore Ts'o
2013-03-18 17:34 ` Eric Sandeen
2013-03-18 17:34 ` Eric Sandeen
2013-03-18 20:41 ` Ben Myers
2013-03-18 23:12 ` Dave Chinner
2013-03-18 23:12 ` Dave Chinner
2013-03-19 1:40 ` Theodore Ts'o
2013-03-19 2:07 ` Dave Chinner
2013-03-19 2:07 ` Dave Chinner
2013-03-19 1:47 ` Dave Chinner [this message]
2013-03-19 1:47 ` Dave Chinner
2013-03-19 2:00 ` Theodore Ts'o
2013-03-19 2:22 ` Dave Chinner
2013-03-19 2:22 ` Dave Chinner
2013-03-19 2:28 ` Eric Sandeen
2013-03-19 8:50 ` Lukáš Czerner
2013-03-19 8:50 ` Lukáš Czerner
2013-03-17 3:36 ` Eric Whitney
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