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Date: Wed, 11 Nov 2015 11:27:03 -0800
From: "Darrick J. Wong" <darrick.wong@...cle.com>
To: hch@...radead.org, david@...morbit.com, darrick.wong@...cle.com
Cc: fstests@...r.kernel.org, xfs@....sgi.com, tao.peng@...marydata.com,
linux-ext4@...r.kernel.org, Anna.Schumaker@...app.com,
linux-btrfs@...r.kernel.org
Subject: [PATCH 05/11] reflink: test the various fallocate modes
Check that the variants of fallocate (allocate, punch, zero range,
collapse range, insert range) do the right thing when they're run
against a range of reflinked blocks.
Signed-off-by: Darrick J. Wong <darrick.wong@...cle.com>
---
tests/generic/811 | 142 +++++++++++++++++++++++++++++++++++++++++++++++++
tests/generic/811.out | 16 ++++++
tests/generic/812 | 142 +++++++++++++++++++++++++++++++++++++++++++++++++
tests/generic/812.out | 19 +++++++
tests/generic/813 | 136 +++++++++++++++++++++++++++++++++++++++++++++++
tests/generic/813.out | 19 +++++++
tests/generic/814 | 139 ++++++++++++++++++++++++++++++++++++++++++++++++
tests/generic/814.out | 19 +++++++
tests/generic/815 | 116 ++++++++++++++++++++++++++++++++++++++++
tests/generic/815.out | 15 +++++
tests/generic/816 | 136 +++++++++++++++++++++++++++++++++++++++++++++++
tests/generic/816.out | 19 +++++++
tests/generic/group | 6 ++
13 files changed, 924 insertions(+)
create mode 100755 tests/generic/811
create mode 100644 tests/generic/811.out
create mode 100755 tests/generic/812
create mode 100644 tests/generic/812.out
create mode 100755 tests/generic/813
create mode 100644 tests/generic/813.out
create mode 100755 tests/generic/814
create mode 100644 tests/generic/814.out
create mode 100755 tests/generic/815
create mode 100644 tests/generic/815.out
create mode 100755 tests/generic/816
create mode 100644 tests/generic/816.out
diff --git a/tests/generic/811 b/tests/generic/811
new file mode 100755
index 0000000..7b09c05
--- /dev/null
+++ b/tests/generic/811
@@ -0,0 +1,142 @@
+#! /bin/bash
+# FS QA Test No. 811
+#
+# Ensure that fallocate steps around reflinked ranges:
+# - Reflink parts of two files together
+# - Fallocate all the other sparse space.
+# - Check that the reflinked areas are still there.
+#
+#-----------------------------------------------------------------------
+# Copyright (c) 2015, Oracle and/or its affiliates. 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 15
+
+_cleanup()
+{
+ cd /
+ rm -rf "$tmp".* "$TESTDIR"
+}
+
+# get standard environment, filters and checks
+. ./common/rc
+. ./common/filter
+. ./common/reflink
+
+# real QA test starts here
+_supported_os Linux
+_require_test_reflink
+_require_cp_reflink
+_require_xfs_io_command "falloc"
+_require_xfs_io_command "truncate"
+
+rm -f "$seqres.full"
+
+TESTDIR="$TEST_DIR/test-$seq"
+rm -rf "$TESTDIR"
+mkdir "$TESTDIR"
+
+echo "Create the original files"
+BLKSZ=65536
+_pwrite_byte 0x61 0 $((BLKSZ * 5 + 37)) "$TESTDIR/file1" >> "$seqres.full"
+
+_reflink_range "$TESTDIR/file1" $BLKSZ "$TESTDIR/file2" $BLKSZ \
+ $((BLKSZ * 4 + 37)) >> "$seqres.full"
+
+"$XFS_IO_PROG" -f -c "truncate $((BLKSZ * 5 + 37))" "$TESTDIR/file3" >> "$seqres.full"
+_reflink_range "$TESTDIR/file1" 0 "$TESTDIR/file3" 0 $BLKSZ >> "$seqres.full"
+
+"$XFS_IO_PROG" -f -c "truncate $((BLKSZ * 5 + 37))" "$TESTDIR/file4" >> "$seqres.full"
+_reflink_range "$TESTDIR/file1" $BLKSZ "$TESTDIR/file4" $BLKSZ $BLKSZ >> "$seqres.full"
+_reflink_range "$TESTDIR/file1" $((BLKSZ * 3)) "$TESTDIR/file4" $((BLKSZ * 3)) \
+ $BLKSZ >> "$seqres.full"
+
+_cp_reflink "$TESTDIR/file1" "$TESTDIR/file5"
+_test_remount
+
+echo "Compare sections"
+md5sum "$TESTDIR/file1" | _filter_test_dir
+md5sum "$TESTDIR/file2" | _filter_test_dir
+md5sum "$TESTDIR/file3" | _filter_test_dir
+md5sum "$TESTDIR/file4" | _filter_test_dir
+md5sum "$TESTDIR/file5" | _filter_test_dir
+
+_compare_range "$TESTDIR/file1" $BLKSZ "$TESTDIR/file2" $BLKSZ \
+ $((BLKSZ * 4 + 37)) \
+ || echo "shared parts of files 1-2 changed"
+
+_compare_range "$TESTDIR/file1" 0 "$TESTDIR/file3" 0 $BLKSZ \
+ || echo "shared parts of files 1-3 changed"
+
+_compare_range "$TESTDIR/file1" $BLKSZ "$TESTDIR/file4" $BLKSZ $BLKSZ \
+ || echo "shared parts of files 1-4 changed"
+
+_compare_range "$TESTDIR/file1" 0 "$TESTDIR/file5" 0 $((BLKSZ * 5 + 37)) \
+ || echo "shared parts of files 1-5 changed"
+
+echo "Compare files"
+C1="$(_md5_checksum "$TESTDIR/file1")"
+C2="$(_md5_checksum "$TESTDIR/file2")"
+C3="$(_md5_checksum "$TESTDIR/file3")"
+C4="$(_md5_checksum "$TESTDIR/file4")"
+C5="$(_md5_checksum "$TESTDIR/file5")"
+
+test "${C1}" != "${C2}" || echo "file1 and file2 should not match"
+test "${C1}" != "${C3}" || echo "file1 and file3 should not match"
+test "${C1}" != "${C4}" || echo "file1 and file4 should not match"
+test "${C1}" = "${C5}" || echo "file1 and file5 should match"
+test "${C2}" != "${C3}" || echo "file2 and file3 should not match"
+test "${C2}" != "${C4}" || echo "file2 and file4 should not match"
+test "${C2}" != "${C5}" || echo "file2 and file5 should not match"
+test "${C3}" != "${C4}" || echo "file3 and file4 should not match"
+test "${C3}" != "${C5}" || echo "file3 and file5 should not match"
+test "${C4}" != "${C5}" || echo "file4 and file5 should not match"
+
+echo "falloc everything"
+"$XFS_IO_PROG" -f -c "falloc 0 $((BLKSZ * 5))" "$TESTDIR/file2" >> "$seqres.full"
+"$XFS_IO_PROG" -f -c "falloc 0 $((BLKSZ * 5))" "$TESTDIR/file3" >> "$seqres.full"
+"$XFS_IO_PROG" -f -c "falloc 0 $((BLKSZ * 5))" "$TESTDIR/file4" >> "$seqres.full"
+_test_remount
+
+echo "Compare files"
+md5sum "$TESTDIR/file1" | _filter_test_dir
+md5sum "$TESTDIR/file2" | _filter_test_dir
+md5sum "$TESTDIR/file3" | _filter_test_dir
+md5sum "$TESTDIR/file4" | _filter_test_dir
+md5sum "$TESTDIR/file5" | _filter_test_dir
+
+D1="$(_md5_checksum "$TESTDIR/file1")"
+D2="$(_md5_checksum "$TESTDIR/file2")"
+D3="$(_md5_checksum "$TESTDIR/file3")"
+D4="$(_md5_checksum "$TESTDIR/file4")"
+D5="$(_md5_checksum "$TESTDIR/file5")"
+
+test "${C1}" = "${D1}" || echo "file1 should not change"
+test "${C2}" = "${D2}" || echo "file2 should not change"
+test "${C3}" = "${D3}" || echo "file3 should not change"
+test "${C4}" = "${D4}" || echo "file4 should not change"
+test "${C5}" = "${D5}" || echo "file2 should not change"
+
+# success, all done
+status=0
+exit
diff --git a/tests/generic/811.out b/tests/generic/811.out
new file mode 100644
index 0000000..950613a
--- /dev/null
+++ b/tests/generic/811.out
@@ -0,0 +1,16 @@
+QA output created by 811
+Create the original files
+Compare sections
+ee8004e6298fa128477bd4aa1adc69fb TEST_DIR/test-811/file1
+a7cb8cb9697d59413e0d10495d226398 TEST_DIR/test-811/file2
+7d42a0a2865c94f45435a2ce7627da02 TEST_DIR/test-811/file3
+7f528bc76f4d61ff9cff7bc1906579c6 TEST_DIR/test-811/file4
+ee8004e6298fa128477bd4aa1adc69fb TEST_DIR/test-811/file5
+Compare files
+falloc everything
+Compare files
+ee8004e6298fa128477bd4aa1adc69fb TEST_DIR/test-811/file1
+a7cb8cb9697d59413e0d10495d226398 TEST_DIR/test-811/file2
+7d42a0a2865c94f45435a2ce7627da02 TEST_DIR/test-811/file3
+7f528bc76f4d61ff9cff7bc1906579c6 TEST_DIR/test-811/file4
+ee8004e6298fa128477bd4aa1adc69fb TEST_DIR/test-811/file5
diff --git a/tests/generic/812 b/tests/generic/812
new file mode 100755
index 0000000..0c7647f
--- /dev/null
+++ b/tests/generic/812
@@ -0,0 +1,142 @@
+#! /bin/bash
+# FS QA Test No. 812
+#
+# Ensure that collapse range steps around reflinked ranges:
+# - Create three reflink clones of a file
+# - Collapse the start, middle, and end of the reflink range of each
+# of the three files, respectively
+# - Check that the reflinked areas are still there.
+#
+#-----------------------------------------------------------------------
+# Copyright (c) 2015, Oracle and/or its affiliates. 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 15
+
+_cleanup()
+{
+ cd /
+ rm -rf "$tmp".* "$TESTDIR"
+}
+
+# get standard environment, filters and checks
+. ./common/rc
+. ./common/filter
+. ./common/reflink
+
+# real QA test starts here
+_supported_os Linux
+_require_test_reflink
+_require_cp_reflink
+_require_xfs_io_command "falloc"
+_require_xfs_io_command "fcollapse"
+
+rm -f "$seqres.full"
+
+TESTDIR="$TEST_DIR/test-$seq"
+rm -rf "$TESTDIR"
+mkdir "$TESTDIR"
+
+echo "Create the original files"
+BLKSZ=65536
+_pwrite_byte 0x61 0 $BLKSZ "$TESTDIR/file1" >> "$seqres.full"
+_pwrite_byte 0x62 $BLKSZ $BLKSZ "$TESTDIR/file1" >> "$seqres.full"
+_pwrite_byte 0x63 $((BLKSZ * 2)) $BLKSZ "$TESTDIR/file1" >> "$seqres.full"
+
+_cp_reflink "$TESTDIR/file1" "$TESTDIR/file2"
+_cp_reflink "$TESTDIR/file1" "$TESTDIR/file3"
+_cp_reflink "$TESTDIR/file1" "$TESTDIR/file4"
+
+"$XFS_IO_PROG" -f -c "falloc 0 $((BLKSZ * 4))" "$TESTDIR/file1"
+"$XFS_IO_PROG" -f -c "falloc 0 $((BLKSZ * 4))" "$TESTDIR/file2"
+"$XFS_IO_PROG" -f -c "falloc 0 $((BLKSZ * 4))" "$TESTDIR/file3"
+"$XFS_IO_PROG" -f -c "falloc 0 $((BLKSZ * 4))" "$TESTDIR/file4"
+
+_pwrite_byte 0x62 0 $BLKSZ "$TESTDIR/file2.chk" >> "$seqres.full"
+_pwrite_byte 0x63 $BLKSZ $BLKSZ "$TESTDIR/file2.chk" >> "$seqres.full"
+_pwrite_byte 0x00 $((BLKSZ * 2)) $BLKSZ "$TESTDIR/file2.chk" >> "$seqres.full"
+
+_pwrite_byte 0x61 0 $BLKSZ "$TESTDIR/file3.chk" >> "$seqres.full"
+_pwrite_byte 0x63 $BLKSZ $BLKSZ "$TESTDIR/file3.chk" >> "$seqres.full"
+_pwrite_byte 0x00 $((BLKSZ * 2)) $BLKSZ "$TESTDIR/file3.chk" >> "$seqres.full"
+
+_pwrite_byte 0x61 0 $BLKSZ "$TESTDIR/file4.chk" >> "$seqres.full"
+_pwrite_byte 0x62 $BLKSZ $BLKSZ "$TESTDIR/file4.chk" >> "$seqres.full"
+_pwrite_byte 0x00 $((BLKSZ * 2)) $BLKSZ "$TESTDIR/file4.chk" >> "$seqres.full"
+_test_remount
+
+md5sum "$TESTDIR/file1" | _filter_test_dir
+md5sum "$TESTDIR/file2" | _filter_test_dir
+md5sum "$TESTDIR/file3" | _filter_test_dir
+md5sum "$TESTDIR/file4" | _filter_test_dir
+md5sum "$TESTDIR/file2.chk" | _filter_test_dir
+md5sum "$TESTDIR/file3.chk" | _filter_test_dir
+md5sum "$TESTDIR/file4.chk" | _filter_test_dir
+
+C1="$(_md5_checksum "$TESTDIR/file1")"
+C2="$(_md5_checksum "$TESTDIR/file2")"
+C3="$(_md5_checksum "$TESTDIR/file3")"
+C4="$(_md5_checksum "$TESTDIR/file4")"
+
+test "${C1}" = "${C2}" || echo "file1 and file2 should match"
+test "${C1}" = "${C3}" || echo "file1 and file3 should match"
+test "${C1}" = "${C4}" || echo "file1 and file4 should match"
+test "${C2}" = "${C3}" || echo "file2 and file3 should match"
+test "${C2}" = "${C4}" || echo "file2 and file4 should match"
+test "${C3}" = "${C4}" || echo "file3 and file4 should match"
+
+echo "fcollapse files"
+"$XFS_IO_PROG" -f -c "fcollapse 0 $BLKSZ" "$TESTDIR/file2"
+"$XFS_IO_PROG" -f -c "fcollapse $BLKSZ $BLKSZ" "$TESTDIR/file3"
+"$XFS_IO_PROG" -f -c "fcollapse $((BLKSZ * 2)) $BLKSZ" "$TESTDIR/file4"
+_test_remount
+
+echo "Compare files"
+md5sum "$TESTDIR/file1" | _filter_test_dir
+md5sum "$TESTDIR/file2" | _filter_test_dir
+md5sum "$TESTDIR/file3" | _filter_test_dir
+md5sum "$TESTDIR/file4" | _filter_test_dir
+md5sum "$TESTDIR/file2.chk" | _filter_test_dir
+md5sum "$TESTDIR/file3.chk" | _filter_test_dir
+md5sum "$TESTDIR/file4.chk" | _filter_test_dir
+
+C1="$(_md5_checksum "$TESTDIR/file1")"
+C2="$(_md5_checksum "$TESTDIR/file2")"
+C3="$(_md5_checksum "$TESTDIR/file3")"
+C4="$(_md5_checksum "$TESTDIR/file4")"
+
+test "${C1}" != "${C2}" || echo "file1 and file2 should not match"
+test "${C1}" != "${C3}" || echo "file1 and file3 should not match"
+test "${C1}" != "${C4}" || echo "file1 and file4 should not match"
+test "${C2}" != "${C3}" || echo "file2 and file3 should not match"
+test "${C2}" != "${C4}" || echo "file2 and file4 should not match"
+test "${C3}" != "${C4}" || echo "file3 and file4 should not match"
+
+echo "Compare against check files"
+cmp -s "$TESTDIR/file2" "$TESTDIR/file2.chk" || echo "file2 and file2.chk do not match"
+cmp -s "$TESTDIR/file3" "$TESTDIR/file3.chk" || echo "file3 and file3.chk do not match"
+cmp -s "$TESTDIR/file4" "$TESTDIR/file4.chk" || echo "file4 and file4.chk do not match"
+
+# success, all done
+status=0
+exit
diff --git a/tests/generic/812.out b/tests/generic/812.out
new file mode 100644
index 0000000..16dc3df
--- /dev/null
+++ b/tests/generic/812.out
@@ -0,0 +1,19 @@
+QA output created by 812
+Create the original files
+564b34fb4a562f6d864f371248e48540 TEST_DIR/test-812/file1
+564b34fb4a562f6d864f371248e48540 TEST_DIR/test-812/file2
+564b34fb4a562f6d864f371248e48540 TEST_DIR/test-812/file3
+564b34fb4a562f6d864f371248e48540 TEST_DIR/test-812/file4
+9a239246ce4bee20f2de1b0ba41a41e0 TEST_DIR/test-812/file2.chk
+859c251680d8bbf0f859f5c6d7a6a2a2 TEST_DIR/test-812/file3.chk
+c931e8500c1a56a5b7369f7f1b971690 TEST_DIR/test-812/file4.chk
+fcollapse files
+Compare files
+564b34fb4a562f6d864f371248e48540 TEST_DIR/test-812/file1
+9a239246ce4bee20f2de1b0ba41a41e0 TEST_DIR/test-812/file2
+859c251680d8bbf0f859f5c6d7a6a2a2 TEST_DIR/test-812/file3
+c931e8500c1a56a5b7369f7f1b971690 TEST_DIR/test-812/file4
+9a239246ce4bee20f2de1b0ba41a41e0 TEST_DIR/test-812/file2.chk
+859c251680d8bbf0f859f5c6d7a6a2a2 TEST_DIR/test-812/file3.chk
+c931e8500c1a56a5b7369f7f1b971690 TEST_DIR/test-812/file4.chk
+Compare against check files
diff --git a/tests/generic/813 b/tests/generic/813
new file mode 100755
index 0000000..d313bc7
--- /dev/null
+++ b/tests/generic/813
@@ -0,0 +1,136 @@
+#! /bin/bash
+# FS QA Test No. 813
+#
+# Ensure that punch-hole steps around reflinked ranges:
+# - Create three reflink clones of a file
+# - Punch the start, middle, and end of the reflink range of each
+# of the three files, respectively
+# - Check that the reflinked areas are still there.
+#
+#-----------------------------------------------------------------------
+# Copyright (c) 2015, Oracle and/or its affiliates. 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 15
+
+_cleanup()
+{
+ cd /
+ rm -rf "$tmp".* "$TESTDIR"
+}
+
+# get standard environment, filters and checks
+. ./common/rc
+. ./common/filter
+. ./common/reflink
+
+# real QA test starts here
+_supported_os Linux
+_require_test_reflink
+_require_cp_reflink
+_require_xfs_io_command "fpunch"
+
+rm -f "$seqres.full"
+
+TESTDIR="$TEST_DIR/test-$seq"
+rm -rf "$TESTDIR"
+mkdir "$TESTDIR"
+
+echo "Create the original files"
+BLKSZ=65536
+_pwrite_byte 0x61 0 $BLKSZ "$TESTDIR/file1" >> "$seqres.full"
+_pwrite_byte 0x62 $BLKSZ $BLKSZ "$TESTDIR/file1" >> "$seqres.full"
+_pwrite_byte 0x63 $((BLKSZ * 2)) $BLKSZ "$TESTDIR/file1" >> "$seqres.full"
+
+_cp_reflink "$TESTDIR/file1" "$TESTDIR/file2"
+_cp_reflink "$TESTDIR/file1" "$TESTDIR/file3"
+_cp_reflink "$TESTDIR/file1" "$TESTDIR/file4"
+
+_pwrite_byte 0x00 0 $BLKSZ "$TESTDIR/file2.chk" >> "$seqres.full"
+_pwrite_byte 0x62 $BLKSZ $BLKSZ "$TESTDIR/file2.chk" >> "$seqres.full"
+_pwrite_byte 0x63 $((BLKSZ * 2)) $BLKSZ "$TESTDIR/file2.chk" >> "$seqres.full"
+
+_pwrite_byte 0x61 0 $BLKSZ "$TESTDIR/file3.chk" >> "$seqres.full"
+_pwrite_byte 0x00 $BLKSZ $BLKSZ "$TESTDIR/file3.chk" >> "$seqres.full"
+_pwrite_byte 0x63 $((BLKSZ * 2)) $BLKSZ "$TESTDIR/file3.chk" >> "$seqres.full"
+
+_pwrite_byte 0x61 0 $BLKSZ "$TESTDIR/file4.chk" >> "$seqres.full"
+_pwrite_byte 0x62 $BLKSZ $BLKSZ "$TESTDIR/file4.chk" >> "$seqres.full"
+_pwrite_byte 0x00 $((BLKSZ * 2)) $BLKSZ "$TESTDIR/file4.chk" >> "$seqres.full"
+_test_remount
+
+md5sum "$TESTDIR/file1" | _filter_test_dir
+md5sum "$TESTDIR/file2" | _filter_test_dir
+md5sum "$TESTDIR/file3" | _filter_test_dir
+md5sum "$TESTDIR/file4" | _filter_test_dir
+md5sum "$TESTDIR/file2.chk" | _filter_test_dir
+md5sum "$TESTDIR/file3.chk" | _filter_test_dir
+md5sum "$TESTDIR/file4.chk" | _filter_test_dir
+
+C1="$(_md5_checksum "$TESTDIR/file1")"
+C2="$(_md5_checksum "$TESTDIR/file2")"
+C3="$(_md5_checksum "$TESTDIR/file3")"
+C4="$(_md5_checksum "$TESTDIR/file4")"
+
+test "${C1}" = "${C2}" || echo "file1 and file2 should match"
+test "${C1}" = "${C3}" || echo "file1 and file3 should match"
+test "${C1}" = "${C4}" || echo "file1 and file4 should match"
+test "${C2}" = "${C3}" || echo "file2 and file3 should match"
+test "${C2}" = "${C4}" || echo "file2 and file4 should match"
+test "${C3}" = "${C4}" || echo "file3 and file4 should match"
+
+echo "fpunch files"
+"$XFS_IO_PROG" -f -c "fpunch 0 $BLKSZ" "$TESTDIR/file2"
+"$XFS_IO_PROG" -f -c "fpunch $BLKSZ $BLKSZ" "$TESTDIR/file3"
+"$XFS_IO_PROG" -f -c "fpunch $((BLKSZ * 2)) $BLKSZ" "$TESTDIR/file4"
+_test_remount
+
+echo "Compare files"
+md5sum "$TESTDIR/file1" | _filter_test_dir
+md5sum "$TESTDIR/file2" | _filter_test_dir
+md5sum "$TESTDIR/file3" | _filter_test_dir
+md5sum "$TESTDIR/file4" | _filter_test_dir
+md5sum "$TESTDIR/file2.chk" | _filter_test_dir
+md5sum "$TESTDIR/file3.chk" | _filter_test_dir
+md5sum "$TESTDIR/file4.chk" | _filter_test_dir
+
+C1="$(_md5_checksum "$TESTDIR/file1")"
+C2="$(_md5_checksum "$TESTDIR/file2")"
+C3="$(_md5_checksum "$TESTDIR/file3")"
+C4="$(_md5_checksum "$TESTDIR/file4")"
+
+test "${C1}" != "${C2}" || echo "file1 and file2 should not match"
+test "${C1}" != "${C3}" || echo "file1 and file3 should not match"
+test "${C1}" != "${C4}" || echo "file1 and file4 should not match"
+test "${C2}" != "${C3}" || echo "file2 and file3 should not match"
+test "${C2}" != "${C4}" || echo "file2 and file4 should not match"
+test "${C3}" != "${C4}" || echo "file3 and file4 should not match"
+
+echo "Compare against check files"
+cmp -s "$TESTDIR/file2" "$TESTDIR/file2.chk" || echo "file2 and file2.chk do not match"
+cmp -s "$TESTDIR/file3" "$TESTDIR/file3.chk" || echo "file3 and file3.chk do not match"
+cmp -s "$TESTDIR/file4" "$TESTDIR/file4.chk" || echo "file4 and file4.chk do not match"
+
+# success, all done
+status=0
+exit
diff --git a/tests/generic/813.out b/tests/generic/813.out
new file mode 100644
index 0000000..98fda42
--- /dev/null
+++ b/tests/generic/813.out
@@ -0,0 +1,19 @@
+QA output created by 813
+Create the original files
+856bb58abaf1ac79aa1aa45b7de7218b TEST_DIR/test-813/file1
+856bb58abaf1ac79aa1aa45b7de7218b TEST_DIR/test-813/file2
+856bb58abaf1ac79aa1aa45b7de7218b TEST_DIR/test-813/file3
+856bb58abaf1ac79aa1aa45b7de7218b TEST_DIR/test-813/file4
+e263fae701bc40c23a3edb20aad5573e TEST_DIR/test-813/file2.chk
+91722d7c8baf83f300a8dc35f1ffcce2 TEST_DIR/test-813/file3.chk
+c931e8500c1a56a5b7369f7f1b971690 TEST_DIR/test-813/file4.chk
+fpunch files
+Compare files
+856bb58abaf1ac79aa1aa45b7de7218b TEST_DIR/test-813/file1
+e263fae701bc40c23a3edb20aad5573e TEST_DIR/test-813/file2
+91722d7c8baf83f300a8dc35f1ffcce2 TEST_DIR/test-813/file3
+c931e8500c1a56a5b7369f7f1b971690 TEST_DIR/test-813/file4
+e263fae701bc40c23a3edb20aad5573e TEST_DIR/test-813/file2.chk
+91722d7c8baf83f300a8dc35f1ffcce2 TEST_DIR/test-813/file3.chk
+c931e8500c1a56a5b7369f7f1b971690 TEST_DIR/test-813/file4.chk
+Compare against check files
diff --git a/tests/generic/814 b/tests/generic/814
new file mode 100755
index 0000000..c35bdd9
--- /dev/null
+++ b/tests/generic/814
@@ -0,0 +1,139 @@
+#! /bin/bash
+# FS QA Test No. 812
+#
+# Ensure that insert range steps around reflinked ranges:
+# - Create three reflink clones of a file
+# - Insert into the start, middle, and end of the reflink range of each
+# of the three files, respectively
+# - Check that the reflinked areas are still there.
+#
+#-----------------------------------------------------------------------
+# Copyright (c) 2015, Oracle and/or its affiliates. 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 15
+
+_cleanup()
+{
+ cd /
+ rm -rf "$tmp".* "$TESTDIR"
+}
+
+# get standard environment, filters and checks
+. ./common/rc
+. ./common/filter
+. ./common/reflink
+
+# real QA test starts here
+_supported_os Linux
+_require_test_reflink
+_require_cp_reflink
+_require_xfs_io_command "finsert"
+
+rm -f "$seqres.full"
+
+TESTDIR="$TEST_DIR/test-$seq"
+rm -rf "$TESTDIR"
+mkdir "$TESTDIR"
+
+echo "Create the original files"
+BLKSZ=65536
+_pwrite_byte 0x61 0 $BLKSZ "$TESTDIR/file1" >> "$seqres.full"
+_pwrite_byte 0x62 $BLKSZ $BLKSZ "$TESTDIR/file1" >> "$seqres.full"
+_pwrite_byte 0x63 $((BLKSZ * 2)) $BLKSZ "$TESTDIR/file1" >> "$seqres.full"
+
+_cp_reflink "$TESTDIR/file1" "$TESTDIR/file2"
+_cp_reflink "$TESTDIR/file1" "$TESTDIR/file3"
+_cp_reflink "$TESTDIR/file1" "$TESTDIR/file4"
+
+_pwrite_byte 0x00 0 $BLKSZ "$TESTDIR/file2.chk" >> "$seqres.full"
+_pwrite_byte 0x61 $BLKSZ $BLKSZ "$TESTDIR/file2.chk" >> "$seqres.full"
+_pwrite_byte 0x62 $((BLKSZ * 2)) $BLKSZ "$TESTDIR/file2.chk" >> "$seqres.full"
+_pwrite_byte 0x63 $((BLKSZ * 3)) $BLKSZ "$TESTDIR/file2.chk" >> "$seqres.full"
+
+_pwrite_byte 0x61 0 $BLKSZ "$TESTDIR/file3.chk" >> "$seqres.full"
+_pwrite_byte 0x00 $BLKSZ $BLKSZ "$TESTDIR/file3.chk" >> "$seqres.full"
+_pwrite_byte 0x62 $((BLKSZ * 2)) $BLKSZ "$TESTDIR/file3.chk" >> "$seqres.full"
+_pwrite_byte 0x63 $((BLKSZ * 3)) $BLKSZ "$TESTDIR/file3.chk" >> "$seqres.full"
+
+_pwrite_byte 0x61 0 $BLKSZ "$TESTDIR/file4.chk" >> "$seqres.full"
+_pwrite_byte 0x62 $BLKSZ $BLKSZ "$TESTDIR/file4.chk" >> "$seqres.full"
+_pwrite_byte 0x00 $((BLKSZ * 2)) $BLKSZ "$TESTDIR/file4.chk" >> "$seqres.full"
+_pwrite_byte 0x63 $((BLKSZ * 3)) $BLKSZ "$TESTDIR/file4.chk" >> "$seqres.full"
+_test_remount
+
+md5sum "$TESTDIR/file1" | _filter_test_dir
+md5sum "$TESTDIR/file2" | _filter_test_dir
+md5sum "$TESTDIR/file3" | _filter_test_dir
+md5sum "$TESTDIR/file4" | _filter_test_dir
+md5sum "$TESTDIR/file2.chk" | _filter_test_dir
+md5sum "$TESTDIR/file3.chk" | _filter_test_dir
+md5sum "$TESTDIR/file4.chk" | _filter_test_dir
+
+C1="$(_md5_checksum "$TESTDIR/file1")"
+C2="$(_md5_checksum "$TESTDIR/file2")"
+C3="$(_md5_checksum "$TESTDIR/file3")"
+C4="$(_md5_checksum "$TESTDIR/file4")"
+
+test "${C1}" = "${C2}" || echo "file1 and file2 should match"
+test "${C1}" = "${C3}" || echo "file1 and file3 should match"
+test "${C1}" = "${C4}" || echo "file1 and file4 should match"
+test "${C2}" = "${C3}" || echo "file2 and file3 should match"
+test "${C2}" = "${C4}" || echo "file2 and file4 should match"
+test "${C3}" = "${C4}" || echo "file3 and file4 should match"
+
+echo "finsert files"
+"$XFS_IO_PROG" -f -c "finsert 0 $BLKSZ" "$TESTDIR/file2"
+"$XFS_IO_PROG" -f -c "finsert $BLKSZ $BLKSZ" "$TESTDIR/file3"
+"$XFS_IO_PROG" -f -c "finsert $((BLKSZ * 2)) $BLKSZ" "$TESTDIR/file4"
+_test_remount
+
+echo "Compare files"
+md5sum "$TESTDIR/file1" | _filter_test_dir
+md5sum "$TESTDIR/file2" | _filter_test_dir
+md5sum "$TESTDIR/file3" | _filter_test_dir
+md5sum "$TESTDIR/file4" | _filter_test_dir
+md5sum "$TESTDIR/file2.chk" | _filter_test_dir
+md5sum "$TESTDIR/file3.chk" | _filter_test_dir
+md5sum "$TESTDIR/file4.chk" | _filter_test_dir
+
+C1="$(_md5_checksum "$TESTDIR/file1")"
+C2="$(_md5_checksum "$TESTDIR/file2")"
+C3="$(_md5_checksum "$TESTDIR/file3")"
+C4="$(_md5_checksum "$TESTDIR/file4")"
+
+test "${C1}" != "${C2}" || echo "file1 and file2 should not match"
+test "${C1}" != "${C3}" || echo "file1 and file3 should not match"
+test "${C1}" != "${C4}" || echo "file1 and file4 should not match"
+test "${C2}" != "${C3}" || echo "file2 and file3 should not match"
+test "${C2}" != "${C4}" || echo "file2 and file4 should not match"
+test "${C3}" != "${C4}" || echo "file3 and file4 should not match"
+
+echo "Compare against check files"
+cmp -s "$TESTDIR/file2" "$TESTDIR/file2.chk" || echo "file2 and file2.chk do not match"
+cmp -s "$TESTDIR/file3" "$TESTDIR/file3.chk" || echo "file3 and file3.chk do not match"
+cmp -s "$TESTDIR/file4" "$TESTDIR/file4.chk" || echo "file4 and file4.chk do not match"
+
+# success, all done
+status=0
+exit
diff --git a/tests/generic/814.out b/tests/generic/814.out
new file mode 100644
index 0000000..6093561
--- /dev/null
+++ b/tests/generic/814.out
@@ -0,0 +1,19 @@
+QA output created by 814
+Create the original files
+856bb58abaf1ac79aa1aa45b7de7218b TEST_DIR/test-814/file1
+856bb58abaf1ac79aa1aa45b7de7218b TEST_DIR/test-814/file2
+856bb58abaf1ac79aa1aa45b7de7218b TEST_DIR/test-814/file3
+856bb58abaf1ac79aa1aa45b7de7218b TEST_DIR/test-814/file4
+2b0921503c9f661b7690ac5b42f01f97 TEST_DIR/test-814/file2.chk
+c424badbaad621c331a8ef213b78ac2a TEST_DIR/test-814/file3.chk
+33b4940294a1d94bee813907d6105ff7 TEST_DIR/test-814/file4.chk
+finsert files
+Compare files
+856bb58abaf1ac79aa1aa45b7de7218b TEST_DIR/test-814/file1
+2b0921503c9f661b7690ac5b42f01f97 TEST_DIR/test-814/file2
+c424badbaad621c331a8ef213b78ac2a TEST_DIR/test-814/file3
+33b4940294a1d94bee813907d6105ff7 TEST_DIR/test-814/file4
+2b0921503c9f661b7690ac5b42f01f97 TEST_DIR/test-814/file2.chk
+c424badbaad621c331a8ef213b78ac2a TEST_DIR/test-814/file3.chk
+33b4940294a1d94bee813907d6105ff7 TEST_DIR/test-814/file4.chk
+Compare against check files
diff --git a/tests/generic/815 b/tests/generic/815
new file mode 100755
index 0000000..8d545ee
--- /dev/null
+++ b/tests/generic/815
@@ -0,0 +1,116 @@
+#! /bin/bash
+# FS QA Test No. 815
+#
+# Ensure that truncating the last block in a reflinked file CoWs appropriately:
+# - Create a file that doesn't end on a block boundary
+# - Create two reflink clones of the file
+# - Shorten one of the clones with truncate
+# - Lengthen the other clone with truncate
+# - Check that the reflinked areas are still there.
+#
+#-----------------------------------------------------------------------
+# Copyright (c) 2015, Oracle and/or its affiliates. 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 15
+
+_cleanup()
+{
+ cd /
+ rm -rf "$tmp".* "$TESTDIR"
+}
+
+# get standard environment, filters and checks
+. ./common/rc
+. ./common/filter
+. ./common/reflink
+
+# real QA test starts here
+_supported_os Linux
+_require_test_reflink
+_require_cp_reflink
+_require_xfs_io_command "truncate"
+
+rm -f "$seqres.full"
+
+TESTDIR="$TEST_DIR/test-$seq"
+rm -rf "$TESTDIR"
+mkdir "$TESTDIR"
+
+echo "Create the original files"
+BLKSZ=65536
+_pwrite_byte 0x61 0 $BLKSZ "$TESTDIR/file1" >> "$seqres.full"
+_pwrite_byte 0x62 $BLKSZ 37 "$TESTDIR/file1" >> "$seqres.full"
+
+_cp_reflink "$TESTDIR/file1" "$TESTDIR/file2"
+_cp_reflink "$TESTDIR/file1" "$TESTDIR/file3"
+
+_pwrite_byte 0x61 0 $BLKSZ "$TESTDIR/file2.chk" >> "$seqres.full"
+_pwrite_byte 0x62 $BLKSZ 34 "$TESTDIR/file2.chk" >> "$seqres.full"
+
+_pwrite_byte 0x61 0 $BLKSZ "$TESTDIR/file3.chk" >> "$seqres.full"
+_pwrite_byte 0x62 $BLKSZ 37 "$TESTDIR/file3.chk" >> "$seqres.full"
+_pwrite_byte 0x00 $((BLKSZ + 37)) 3 "$TESTDIR/file3.chk" >> "$seqres.full"
+_test_remount
+
+md5sum "$TESTDIR/file1" | _filter_test_dir
+md5sum "$TESTDIR/file2" | _filter_test_dir
+md5sum "$TESTDIR/file3" | _filter_test_dir
+md5sum "$TESTDIR/file2.chk" | _filter_test_dir
+md5sum "$TESTDIR/file3.chk" | _filter_test_dir
+
+C1="$(_md5_checksum "$TESTDIR/file1")"
+C2="$(_md5_checksum "$TESTDIR/file2")"
+C3="$(_md5_checksum "$TESTDIR/file3")"
+
+test "${C1}" = "${C2}" || echo "file1 and file2 should match"
+test "${C1}" = "${C3}" || echo "file1 and file3 should match"
+test "${C2}" = "${C3}" || echo "file2 and file3 should match"
+
+echo "truncate files"
+"$XFS_IO_PROG" -f -c "truncate $((BLKSZ + 34))" "$TESTDIR/file2"
+"$XFS_IO_PROG" -f -c "truncate $((BLKSZ + 40))" "$TESTDIR/file3"
+_test_remount
+
+echo "Compare files"
+md5sum "$TESTDIR/file1" | _filter_test_dir
+md5sum "$TESTDIR/file2" | _filter_test_dir
+md5sum "$TESTDIR/file3" | _filter_test_dir
+md5sum "$TESTDIR/file2.chk" | _filter_test_dir
+md5sum "$TESTDIR/file3.chk" | _filter_test_dir
+
+C1="$(_md5_checksum "$TESTDIR/file1")"
+C2="$(_md5_checksum "$TESTDIR/file2")"
+C3="$(_md5_checksum "$TESTDIR/file3")"
+
+test "${C1}" != "${C2}" || echo "file1 and file2 should not match"
+test "${C1}" != "${C3}" || echo "file1 and file3 should not match"
+test "${C2}" != "${C3}" || echo "file2 and file3 should not match"
+
+echo "Compare against check files"
+cmp -s "$TESTDIR/file2" "$TESTDIR/file2.chk" || echo "file2 and file2.chk do not match"
+cmp -s "$TESTDIR/file3" "$TESTDIR/file3.chk" || echo "file3 and file3.chk do not match"
+
+# success, all done
+status=0
+exit
diff --git a/tests/generic/815.out b/tests/generic/815.out
new file mode 100644
index 0000000..8c36c2d
--- /dev/null
+++ b/tests/generic/815.out
@@ -0,0 +1,15 @@
+QA output created by 815
+Create the original files
+f924bdda449af63913cad4357e39301e TEST_DIR/test-815/file1
+f924bdda449af63913cad4357e39301e TEST_DIR/test-815/file2
+f924bdda449af63913cad4357e39301e TEST_DIR/test-815/file3
+16cb529abe447a9f203a3d5eb3433c8b TEST_DIR/test-815/file2.chk
+6f042ad39f6c74f4b73936db89baa2e2 TEST_DIR/test-815/file3.chk
+truncate files
+Compare files
+f924bdda449af63913cad4357e39301e TEST_DIR/test-815/file1
+16cb529abe447a9f203a3d5eb3433c8b TEST_DIR/test-815/file2
+6f042ad39f6c74f4b73936db89baa2e2 TEST_DIR/test-815/file3
+16cb529abe447a9f203a3d5eb3433c8b TEST_DIR/test-815/file2.chk
+6f042ad39f6c74f4b73936db89baa2e2 TEST_DIR/test-815/file3.chk
+Compare against check files
diff --git a/tests/generic/816 b/tests/generic/816
new file mode 100755
index 0000000..44b5ae4
--- /dev/null
+++ b/tests/generic/816
@@ -0,0 +1,136 @@
+#! /bin/bash
+# FS QA Test No. 813
+#
+# Ensure that zero-range steps around reflinked ranges:
+# - Create three reflink clones of a file
+# - Zero-range the start, middle, and end of the reflink range of each
+# of the three files, respectively
+# - Check that the reflinked areas are still there.
+#
+#-----------------------------------------------------------------------
+# Copyright (c) 2015, Oracle and/or its affiliates. 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 15
+
+_cleanup()
+{
+ cd /
+ rm -rf "$tmp".* "$TESTDIR"
+}
+
+# get standard environment, filters and checks
+. ./common/rc
+. ./common/filter
+. ./common/reflink
+
+# real QA test starts here
+_supported_os Linux
+_require_test_reflink
+_require_cp_reflink
+_require_xfs_io_command "fzero"
+
+rm -f "$seqres.full"
+
+TESTDIR="$TEST_DIR/test-$seq"
+rm -rf "$TESTDIR"
+mkdir "$TESTDIR"
+
+echo "Create the original files"
+BLKSZ=65536
+_pwrite_byte 0x61 0 $BLKSZ "$TESTDIR/file1" >> "$seqres.full"
+_pwrite_byte 0x62 $BLKSZ $BLKSZ "$TESTDIR/file1" >> "$seqres.full"
+_pwrite_byte 0x63 $((BLKSZ * 2)) $BLKSZ "$TESTDIR/file1" >> "$seqres.full"
+
+_cp_reflink "$TESTDIR/file1" "$TESTDIR/file2"
+_cp_reflink "$TESTDIR/file1" "$TESTDIR/file3"
+_cp_reflink "$TESTDIR/file1" "$TESTDIR/file4"
+
+_pwrite_byte 0x00 0 $BLKSZ "$TESTDIR/file2.chk" >> "$seqres.full"
+_pwrite_byte 0x62 $BLKSZ $BLKSZ "$TESTDIR/file2.chk" >> "$seqres.full"
+_pwrite_byte 0x63 $((BLKSZ * 2)) $BLKSZ "$TESTDIR/file2.chk" >> "$seqres.full"
+
+_pwrite_byte 0x61 0 $BLKSZ "$TESTDIR/file3.chk" >> "$seqres.full"
+_pwrite_byte 0x00 $BLKSZ $BLKSZ "$TESTDIR/file3.chk" >> "$seqres.full"
+_pwrite_byte 0x63 $((BLKSZ * 2)) $BLKSZ "$TESTDIR/file3.chk" >> "$seqres.full"
+
+_pwrite_byte 0x61 0 $BLKSZ "$TESTDIR/file4.chk" >> "$seqres.full"
+_pwrite_byte 0x62 $BLKSZ $BLKSZ "$TESTDIR/file4.chk" >> "$seqres.full"
+_pwrite_byte 0x00 $((BLKSZ * 2)) $BLKSZ "$TESTDIR/file4.chk" >> "$seqres.full"
+_test_remount
+
+md5sum "$TESTDIR/file1" | _filter_test_dir
+md5sum "$TESTDIR/file2" | _filter_test_dir
+md5sum "$TESTDIR/file3" | _filter_test_dir
+md5sum "$TESTDIR/file4" | _filter_test_dir
+md5sum "$TESTDIR/file2.chk" | _filter_test_dir
+md5sum "$TESTDIR/file3.chk" | _filter_test_dir
+md5sum "$TESTDIR/file4.chk" | _filter_test_dir
+
+C1="$(_md5_checksum "$TESTDIR/file1")"
+C2="$(_md5_checksum "$TESTDIR/file2")"
+C3="$(_md5_checksum "$TESTDIR/file3")"
+C4="$(_md5_checksum "$TESTDIR/file4")"
+
+test "${C1}" = "${C2}" || echo "file1 and file2 should match"
+test "${C1}" = "${C3}" || echo "file1 and file3 should match"
+test "${C1}" = "${C4}" || echo "file1 and file4 should match"
+test "${C2}" = "${C3}" || echo "file2 and file3 should match"
+test "${C2}" = "${C4}" || echo "file2 and file4 should match"
+test "${C3}" = "${C4}" || echo "file3 and file4 should match"
+
+echo "fzero files"
+"$XFS_IO_PROG" -f -c "fzero 0 $BLKSZ" "$TESTDIR/file2"
+"$XFS_IO_PROG" -f -c "fzero $BLKSZ $BLKSZ" "$TESTDIR/file3"
+"$XFS_IO_PROG" -f -c "fzero $((BLKSZ * 2)) $BLKSZ" "$TESTDIR/file4"
+_test_remount
+
+echo "Compare files"
+md5sum "$TESTDIR/file1" | _filter_test_dir
+md5sum "$TESTDIR/file2" | _filter_test_dir
+md5sum "$TESTDIR/file3" | _filter_test_dir
+md5sum "$TESTDIR/file4" | _filter_test_dir
+md5sum "$TESTDIR/file2.chk" | _filter_test_dir
+md5sum "$TESTDIR/file3.chk" | _filter_test_dir
+md5sum "$TESTDIR/file4.chk" | _filter_test_dir
+
+C1="$(_md5_checksum "$TESTDIR/file1")"
+C2="$(_md5_checksum "$TESTDIR/file2")"
+C3="$(_md5_checksum "$TESTDIR/file3")"
+C4="$(_md5_checksum "$TESTDIR/file4")"
+
+test "${C1}" != "${C2}" || echo "file1 and file2 should not match"
+test "${C1}" != "${C3}" || echo "file1 and file3 should not match"
+test "${C1}" != "${C4}" || echo "file1 and file4 should not match"
+test "${C2}" != "${C3}" || echo "file2 and file3 should not match"
+test "${C2}" != "${C4}" || echo "file2 and file4 should not match"
+test "${C3}" != "${C4}" || echo "file3 and file4 should not match"
+
+echo "Compare against check files"
+cmp -s "$TESTDIR/file2" "$TESTDIR/file2.chk" || echo "file2 and file2.chk do not match"
+cmp -s "$TESTDIR/file3" "$TESTDIR/file3.chk" || echo "file3 and file3.chk do not match"
+cmp -s "$TESTDIR/file4" "$TESTDIR/file4.chk" || echo "file4 and file4.chk do not match"
+
+# success, all done
+status=0
+exit
diff --git a/tests/generic/816.out b/tests/generic/816.out
new file mode 100644
index 0000000..f3e1396
--- /dev/null
+++ b/tests/generic/816.out
@@ -0,0 +1,19 @@
+QA output created by 816
+Create the original files
+856bb58abaf1ac79aa1aa45b7de7218b TEST_DIR/test-816/file1
+856bb58abaf1ac79aa1aa45b7de7218b TEST_DIR/test-816/file2
+856bb58abaf1ac79aa1aa45b7de7218b TEST_DIR/test-816/file3
+856bb58abaf1ac79aa1aa45b7de7218b TEST_DIR/test-816/file4
+e263fae701bc40c23a3edb20aad5573e TEST_DIR/test-816/file2.chk
+91722d7c8baf83f300a8dc35f1ffcce2 TEST_DIR/test-816/file3.chk
+c931e8500c1a56a5b7369f7f1b971690 TEST_DIR/test-816/file4.chk
+fzero files
+Compare files
+856bb58abaf1ac79aa1aa45b7de7218b TEST_DIR/test-816/file1
+e263fae701bc40c23a3edb20aad5573e TEST_DIR/test-816/file2
+91722d7c8baf83f300a8dc35f1ffcce2 TEST_DIR/test-816/file3
+c931e8500c1a56a5b7369f7f1b971690 TEST_DIR/test-816/file4
+e263fae701bc40c23a3edb20aad5573e TEST_DIR/test-816/file2.chk
+91722d7c8baf83f300a8dc35f1ffcce2 TEST_DIR/test-816/file3.chk
+c931e8500c1a56a5b7369f7f1b971690 TEST_DIR/test-816/file4.chk
+Compare against check files
diff --git a/tests/generic/group b/tests/generic/group
index a72d416..58c68c8 100644
--- a/tests/generic/group
+++ b/tests/generic/group
@@ -219,6 +219,12 @@
808 auto quick clone
809 auto quick clone
810 auto quick clone
+811 auto quick clone
+812 auto quick clone
+813 auto quick clone
+814 auto quick clone
+815 auto quick clone
+816 auto quick clone
817 auto quick clone
818 auto quick clone
819 auto quick clone
--
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