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Date: Tue, 19 Mar 2013 12:47:18 +1100 From: Dave Chinner <david@...morbit.com> To: Ben Myers <bpm@....com> Cc: Eric Sandeen <sandeen@...hat.com>, Theodore Ts'o <tytso@....edu>, xfs-oss <xfs@....sgi.com>, linux-ext4@...r.kernel.org, Eric Whitney <enwlinux@...il.com> Subject: Re: possible dev branch regression - xfstest 285/1k 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@...morbit.com -- To unsubscribe from this list: send the line "unsubscribe linux-ext4" in the body of a message to majordomo@...r.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html
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