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Date:	Tue, 18 Sep 2012 09:43:36 -0500
From:	Mark Tinguely <>
To:	Dave Chinner <>
CC:	Theodore Ts'o <>,,,
Subject: Re: Anyone have test cases for SEEK_HOLE/SEEK_DATA?

On 09/18/12 01:40, Dave Chinner wrote:
> On Mon, Sep 17, 2012 at 10:04:34PM -0400, Theodore Ts'o wrote:
>> Does anyone have test cases for SEEK_HOLE/SEEK_DATA handy?  As near as I
>> can tell xfstests doesn't have any tests for SEEK_HOLE/SEEK_DATA
>> functionality, and I was hoping someone had some test programs and test
>> sets already written.
> Perhaps a cc to so the xfstests maintainers see the
> question would be a sensible idea?
> As it is, there are tests pending check-in that test
> seek-data/seek-hole functionality - they were used to verify the
> unwritten extent aware XFS implementation that recently went into
> the kernel....
> Cheers,
> Dave.

xfstest 285 and 286 (I believe these tests were only in the OSS version 
and not in the developers version of xfstests).

There is rough version of another test that I got directly from Jeff 
Lui, the person who wrote the SEEK_HOLE/SEEK_DATA feature in XFS. This 
version tests the advance features of SEEK_HOLE/SEEK_DATA.

Ben asked me about this advanced test when he committed the advance 
features of SEEK_HOLE/SEEK_DATA to the XFS OSS tree. To the best of my 
knowledge, this test has not been submitted as an xfstest so we could 
not add it then.

--Mark Tinguely.
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