On Fri, Aug 05, 2016 at 12:21:47AM -0700, Darrick J. Wong wrote:
> Ensure that we can create a file with a single extent, reflink two
> blocks out of the middle of that extent, and the resulting fiemap
> reports two shared extents, instead of lazily reporting the entire
> huge extent as shared.
>
> Signed-off-by: Darrick J. Wong <darrick.wong@xxxxxxxxxx>
> ---
> tests/generic/929 | 89 +++++++++++++++++++++++++++++++++++++++++++++++++
> tests/generic/929.out | 17 +++++++++
> tests/generic/group | 1 +
> 3 files changed, 107 insertions(+)
> create mode 100755 tests/generic/929
> create mode 100644 tests/generic/929.out
>
> diff --git a/tests/generic/929 b/tests/generic/929
> new file mode 100755
> index 0000000..9793be0
> --- /dev/null
> +++ b/tests/generic/929
> @@ -0,0 +1,89 @@
> +#! /bin/bash
> +# FS QA Test No. 929
> +#
> +# Check that bmap/fiemap accurately report shared extents.
> +#
> +#-----------------------------------------------------------------------
> +# Copyright (c) 2016 Oracle, Inc. All Rights Reserved.
> +#
> +# This program is free software; you can redistribute it and/or
> +# modify it under the terms of the GNU General Public License as
> +# published by the Free Software Foundation.
> +#
> +# This program is distributed in the hope that it would be useful,
> +# but WITHOUT ANY WARRANTY; without even the implied warranty of
> +# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
> +# GNU General Public License for more details.
> +#
> +# You should have received a copy of the GNU General Public License
> +# along with this program; if not, write the Free Software Foundation,
> +# Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
> +#-----------------------------------------------------------------------
> +#
> +
> +seq=`basename $0`
> +seqres=$RESULT_DIR/$seq
> +echo "QA output created by $seq"
> +
> +here=`pwd`
> +tmp=/tmp/$$
> +status=1 # failure is the default!
> +trap "_cleanup; exit \$status" 0 1 2 3 7 15
> +
> +_cleanup()
> +{
> + cd /
> + rm -rf $tmp.*
> + wait
> +}
> +
> +# get standard environment, filters and checks
> +. ./common/rc
> +. ./common/filter
> +. ./common/reflink
> +
> +# real QA test starts here
> +_supported_os Linux
Need "_supported_fs generic"
> +_require_scratch_reflink
> +_require_fiemap
> +
> +echo "Format and mount"
> +_scratch_mkfs > $seqres.full 2>&1
> +_scratch_mount >> $seqres.full 2>&1
> +
> +testdir=$SCRATCH_MNT/test-$seq
> +mkdir $testdir
> +
> +blocks=5
> +blksz=65536
> +sz=$((blocks * blksz))
> +
> +echo "Create the original files"
> +$XFS_IO_PROG -f -c "falloc 0 $sz" $testdir/file1 >> $seqres.full
> +_pwrite_byte 0x61 0 $sz $testdir/file1 >> $seqres.full
> +_scratch_cycle_mount
> +
> +echo "file1 extents and holes"
> +_count_extents $testdir/file1
> +_count_holes $testdir/file1
> +
> +_reflink_range $testdir/file1 $blksz $testdir/file2 $((blksz * 3)) $blksz >> $seqres.full
> +_reflink_range $testdir/file1 $((blksz * 3)) $testdir/file2 $blksz $blksz >> $seqres.full
> +_scratch_cycle_mount
> +
> +echo "Compare files"
> +md5sum $testdir/file1 | _filter_scratch
> +md5sum $testdir/file2 | _filter_scratch
> +
> +echo "file1 extents and holes"
> +_count_extents $testdir/file1
> +_count_holes $testdir/file1
> +echo "file2 extents and holes"
> +_count_extents $testdir/file2
> +_count_holes $testdir/file2
> +echo "file1 shared extents"
> +$XFS_IO_PROG -c 'fiemap -v' $testdir/file1 | awk '{print $5}' | grep '0x.*[2367aAbBfF]...$' -c
Missing a command at the end?
Thanks,
Eryu
> +
> +# success, all done
> +status=0
> +exit
> diff --git a/tests/generic/929.out b/tests/generic/929.out
> new file mode 100644
> index 0000000..e290f4c
> --- /dev/null
> +++ b/tests/generic/929.out
> @@ -0,0 +1,17 @@
> +QA output created by 929
> +Format and mount
> +Create the original files
> +file1 extents and holes
> +1
> +0
> +Compare files
> +17af09af790a9b4c79cddf72f6b642cb SCRATCH_MNT/test-929/file1
> +79418df9c55ab7f58781cb7b9e7d5d91 SCRATCH_MNT/test-929/file2
> +file1 extents and holes
> +5
> +0
> +file2 extents and holes
> +2
> +2
> +file1 shared extents
> +2
> diff --git a/tests/generic/group b/tests/generic/group
> index 18b9775..732f6f6 100644
> --- a/tests/generic/group
> +++ b/tests/generic/group
> @@ -375,3 +375,4 @@
> 370 auto quick richacl
> 927 auto quick clone
> 928 auto quick clone dedupe
> +929 auto quick clone
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