--- /dev/null
+#! /bin/bash
+# FS QA Test No. 414
+#
+# Check that reflinking adjacent blocks in a file produces a single
+# block mapping extent.
+#
+#-----------------------------------------------------------------------
+# Copyright (c) 2017 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
+_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 $testdir
+
+blocks=32
+blksz=65536
+sz=$((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
+seq 0 $blksz $((sz - blksz)) | while read offset; do
+ _reflink_range $testdir/file1 $offset $testdir/file2 $offset $blksz >> $seqres.full
+done
+
+echo "Compare files"
+md5sum $testdir/file1 | _filter_scratch
+md5sum $testdir/file2 | _filter_scratch
+
+echo "Check extent counts"
+f1=$(_count_extents $testdir/file1)
+f2=$(_count_extents $testdir/file2)
+s1=$($XFS_IO_PROG -c 'fiemap -v' $testdir/file1 | awk '{print $5}' | grep -c '0x.*[2367aAbBfF]...$')
+s2=$($XFS_IO_PROG -c 'fiemap -v' $testdir/file2 | awk '{print $5}' | grep -c '0x.*[2367aAbBfF]...$')
+
+# Did the fs combine the extent mappings when we made f2?
+test $f1 -eq $f2 || echo "f1 ($f1) != f2 ($f2)"
+test $s1 -eq $s2 || echo "s1 ($s1) != s2 ($s2)"
+test $f1 -eq $s1 || echo "f1 ($f1) != s1 ($f1)"
+test $f2 -eq $s2 || echo "f2 ($f2) != s2 ($f2)"
+
+_scratch_cycle_mount
+
+echo "Compare files after remounting"
+md5sum $testdir/file1 | _filter_scratch
+md5sum $testdir/file2 | _filter_scratch
+
+echo "Check extent counts"
+f1=$(_count_extents $testdir/file1)
+f2=$(_count_extents $testdir/file2)
+s1=$($XFS_IO_PROG -c 'fiemap -v' $testdir/file1 | awk '{print $5}' | grep -c '0x.*[2367aAbBfF]...$')
+s2=$($XFS_IO_PROG -c 'fiemap -v' $testdir/file2 | awk '{print $5}' | grep -c '0x.*[2367aAbBfF]...$')
+
+# Are the mappings still combined?
+test $f1 -eq $f2 || echo "f1 ($f1) != f2 ($f2)"
+test $s1 -eq $s2 || echo "s1 ($s1) != s2 ($s2)"
+test $f1 -eq $s1 || echo "f1 ($f1) != s1 ($f1)"
+test $f2 -eq $s2 || echo "f2 ($f2) != s2 ($f2)"
+
+# success, all done
+status=0
+exit