On Fri, Aug 05, 2016 at 03:46:07PM +0800, Eryu Guan wrote:
> 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"
Ok.
> > +_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?
Nope, it echoes the number of shared extents (that's what that awk and grep
globule does), which /should/ be exactly 2.
(Unless I'm missing something?)
--D
>
> 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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