diff mbox

[13/23] xfs: test fragmentation characteristics of copy-on-write

Message ID 20160209011309.23099.60912.stgit@birch.djwong.org (mailing list archive)
State Not Applicable
Headers show

Commit Message

Darrick J. Wong Feb. 9, 2016, 1:13 a.m. UTC 
Perform copy-on-writes at random offsets to stress the CoW allocation
system.  Assess the effectiveness of the extent size hint at
combatting fragmentation via unshare, a rewrite, and no-op after the
random writes.

Signed-off-by: Darrick J. Wong <darrick.wong@oracle.com>
---
 tests/generic/301     |  105 +++++++++++++++++++++++++++++++++
 tests/generic/301.out |   11 ++++
 tests/generic/302     |  105 +++++++++++++++++++++++++++++++++
 tests/generic/302.out |   11 ++++
 tests/generic/group   |    2 +
 tests/xfs/180         |  111 +++++++++++++++++++++++++++++++++++
 tests/xfs/180.out     |   12 ++++
 tests/xfs/182         |  111 +++++++++++++++++++++++++++++++++++
 tests/xfs/182.out     |   13 ++++
 tests/xfs/184         |  110 +++++++++++++++++++++++++++++++++++
 tests/xfs/184.out     |   11 ++++
 tests/xfs/192         |  110 +++++++++++++++++++++++++++++++++++
 tests/xfs/192.out     |   11 ++++
 tests/xfs/193         |  107 ++++++++++++++++++++++++++++++++++
 tests/xfs/193.out     |   11 ++++
 tests/xfs/198         |  107 ++++++++++++++++++++++++++++++++++
 tests/xfs/198.out     |   11 ++++
 tests/xfs/200         |  114 ++++++++++++++++++++++++++++++++++++
 tests/xfs/200.out     |   11 ++++
 tests/xfs/204         |  114 ++++++++++++++++++++++++++++++++++++
 tests/xfs/204.out     |   11 ++++
 tests/xfs/207         |  104 +++++++++++++++++++++++++++++++++
 tests/xfs/207.out     |   10 +++
 tests/xfs/208         |  154 +++++++++++++++++++++++++++++++++++++++++++++++++
 tests/xfs/208.out     |   15 +++++
 tests/xfs/209         |   88 ++++++++++++++++++++++++++++
 tests/xfs/209.out     |    6 ++
 tests/xfs/210         |  125 ++++++++++++++++++++++++++++++++++++++++
 tests/xfs/210.out     |   14 ++++
 tests/xfs/211         |  111 +++++++++++++++++++++++++++++++++++
 tests/xfs/211.out     |   12 ++++
 tests/xfs/group       |   13 ++++
 32 files changed, 1861 insertions(+)
 create mode 100755 tests/generic/301
 create mode 100644 tests/generic/301.out
 create mode 100755 tests/generic/302
 create mode 100644 tests/generic/302.out
 create mode 100755 tests/xfs/180
 create mode 100644 tests/xfs/180.out
 create mode 100755 tests/xfs/182
 create mode 100644 tests/xfs/182.out
 create mode 100755 tests/xfs/184
 create mode 100644 tests/xfs/184.out
 create mode 100755 tests/xfs/192
 create mode 100644 tests/xfs/192.out
 create mode 100755 tests/xfs/193
 create mode 100644 tests/xfs/193.out
 create mode 100755 tests/xfs/198
 create mode 100644 tests/xfs/198.out
 create mode 100755 tests/xfs/200
 create mode 100644 tests/xfs/200.out
 create mode 100755 tests/xfs/204
 create mode 100644 tests/xfs/204.out
 create mode 100755 tests/xfs/207
 create mode 100644 tests/xfs/207.out
 create mode 100755 tests/xfs/208
 create mode 100644 tests/xfs/208.out
 create mode 100755 tests/xfs/209
 create mode 100644 tests/xfs/209.out
 create mode 100755 tests/xfs/210
 create mode 100644 tests/xfs/210.out
 create mode 100755 tests/xfs/211
 create mode 100644 tests/xfs/211.out



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Comments

Dave Chinner Feb. 9, 2016, 8:01 a.m. UTC | #1 
On Mon, Feb 08, 2016 at 05:13:09PM -0800, Darrick J. Wong wrote:
> Perform copy-on-writes at random offsets to stress the CoW allocation
> system.  Assess the effectiveness of the extent size hint at
> combatting fragmentation via unshare, a rewrite, and no-op after the
> random writes.
> 
> Signed-off-by: Darrick J. Wong <darrick.wong@oracle.com>
....
> +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"

Now that I've noticed it, a few tests have this line commented out.
Probably should remove the tmp files, at least.

> +rm -f "$seqres.full"
> +
> +echo "Format and mount"
> +_scratch_mkfs > "$seqres.full" 2>&1
> +_scratch_mount >> "$seqres.full" 2>&1
> +
> +testdir="$SCRATCH_MNT/test-$seq"
> +rm -rf $testdir
> +mkdir $testdir

Again, somthing that is repeated - we just mkfs'd the scratch
device, so the $testdir is guaranteed not to exist...

> +echo "Check for damage"
> +umount "$SCRATCH_MNT"

I've also noticed this in a lot of tests - the scratch device will
be unmounted by the harness, so I don't think this is necessary....

> +free_blocks=$(stat -f -c '%a' "$testdir")
> +real_blksz=$(stat -f -c '%S' "$testdir")
> +space_needed=$(((blksz * nr * 3) * 5 / 4))
> +space_avail=$((free_blocks * real_blksz))
> +internal_blks=$((blksz * nr / real_blksz))
> +test $space_needed -gt $space_avail && _notrun "Not enough space. $space_avail < $space_needed"

Why not:

_require_fs_space $space_needed

At minimum, it seems to be a repeated hunk of code, so it shoul dbe
factored.

> +testdir="$SCRATCH_MNT/test-$seq"
> +rm -rf $testdir
> +mkdir $testdir
> +
> +echo "Create the original files"
> +"$XFS_IO_PROG" -f -c "pwrite -S 0x61 0 0" "$testdir/file1" >> "$seqres.full"
> +"$XFS_IO_PROG" -f -c "pwrite -S 0x61 0 1048576" "$testdir/file2" >> "$seqres.full"
> +_scratch_remount
> +
> +echo "Set extsz and cowextsz on zero byte file"
> +"$XFS_IO_PROG" -f -c "extsize 1048576" "$testdir/file1" | _filter_scratch
> +"$XFS_IO_PROG" -f -c "cowextsize 1048576" "$testdir/file1" | _filter_scratch
> +
> +echo "Set extsz and cowextsz on 1Mbyte file"
> +"$XFS_IO_PROG" -f -c "extsize 1048576" "$testdir/file2" | _filter_scratch
> +"$XFS_IO_PROG" -f -c "cowextsize 1048576" "$testdir/file2" | _filter_scratch
> +_scratch_remount
> +
> +fn() {
> +	"$XFS_IO_PROG" -c "$1" "$2" | sed -e 's/.\([0-9]*\).*$/\1/g'
> +}
> +echo "Check extsz and cowextsz settings on zero byte file"
> +test $(fn extsize "$testdir/file1") -eq 1048576 || echo "file1 extsize not set"
> +test $(fn cowextsize "$testdir/file1") -eq 1048576 || echo "file1 cowextsize not set" 

For this sort of thing, just dump the extent size value to the
golden output. i.e.

echo "Check extsz and cowextsz settings on zero byte file"
$XFS_IO_PROG -c extsize $testdir/file1
$XFS_IO_PROG -c cowextsize $testdir/file1

is all that is needed. that way if it fails, we see what value it
had instead of the expected 1MB. This also makes the test much less
verbose and easier to read

> +
> +echo "Check extsz and cowextsz settings on 1Mbyte file"
> +test $(fn extsize "$testdir/file2") -eq 0 || echo "file2 extsize not set"
> +test $(fn cowextsize "$testdir/file2") -eq 1048576 || echo "file2 cowextsize not set" 
> +
> +echo "Set cowextsize and check flag"
> +"$XFS_IO_PROG" -f -c "cowextsize 1048576" "$testdir/file3" | _filter_scratch
> +_scratch_remount
> +test $("$XFS_IO_PROG" -c "stat" "$testdir/file3" | grep 'fsxattr.xflags' | awk '{print $4}' | grep -c 'C') -eq 1 || echo "file3 cowextsz flag not set"
> +test $(fn cowextsize "$testdir/file3") -eq 1048576 || echo "file3 cowextsize not set"
> +"$XFS_IO_PROG" -f -c "cowextsize 0" "$testdir/file3" | _filter_scratch
> +_scratch_remount
> +test $(fn cowextsize "$testdir/file3") -eq 0 || echo "file3 cowextsize not set"
> +test $("$XFS_IO_PROG" -c "stat" "$testdir/file3" | grep 'fsxattr.xflags' | awk '{print $4}' | grep -c 'C') -eq 0 || echo "file3 cowextsz flag not set"

Same with all these - just grep the output for the line you want,
and the golden output matching does everything else. e.g. the flag
check simply becomes:

$XFS_IO_PROG -c "stat" $testdir/file3 | grep 'fsxattr.xflags'

Again, this tells us what the wrong flags are if it fails...

There are quite a few bits of these tests where the same thing
applies....

-Dave.
Darrick J. Wong Feb. 10, 2016, 1:02 a.m. UTC | #2 
On Tue, Feb 09, 2016 at 07:01:44PM +1100, Dave Chinner wrote:
> On Mon, Feb 08, 2016 at 05:13:09PM -0800, Darrick J. Wong wrote:
> > Perform copy-on-writes at random offsets to stress the CoW allocation
> > system.  Assess the effectiveness of the extent size hint at
> > combatting fragmentation via unshare, a rewrite, and no-op after the
> > random writes.
> > 
> > Signed-off-by: Darrick J. Wong <darrick.wong@oracle.com>
> ....
> > +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"
> 
> Now that I've noticed it, a few tests have this line commented out.
> Probably should remove the tmp files, at least.

Done.

> > +rm -f "$seqres.full"
> > +
> > +echo "Format and mount"
> > +_scratch_mkfs > "$seqres.full" 2>&1
> > +_scratch_mount >> "$seqres.full" 2>&1
> > +
> > +testdir="$SCRATCH_MNT/test-$seq"
> > +rm -rf $testdir
> > +mkdir $testdir
> 
> Again, somthing that is repeated - we just mkfs'd the scratch
> device, so the $testdir is guaranteed not to exist...

I've done that to the new tests, will do to the existing ones.

> > +echo "Check for damage"
> > +umount "$SCRATCH_MNT"
> 
> I've also noticed this in a lot of tests - the scratch device will
> be unmounted by the harness, so I don't think this is necessary....

Done.

> > +free_blocks=$(stat -f -c '%a' "$testdir")
> > +real_blksz=$(stat -f -c '%S' "$testdir")
> > +space_needed=$(((blksz * nr * 3) * 5 / 4))
> > +space_avail=$((free_blocks * real_blksz))
> > +internal_blks=$((blksz * nr / real_blksz))
> > +test $space_needed -gt $space_avail && _notrun "Not enough space. $space_avail < $space_needed"
> 
> Why not:
> 
> _require_fs_space $space_needed
> 
> At minimum, it seems to be a repeated hunk of code, so it shoul dbe
> factored.

Ok, done.

> > +testdir="$SCRATCH_MNT/test-$seq"
> > +rm -rf $testdir
> > +mkdir $testdir
> > +
> > +echo "Create the original files"
> > +"$XFS_IO_PROG" -f -c "pwrite -S 0x61 0 0" "$testdir/file1" >> "$seqres.full"
> > +"$XFS_IO_PROG" -f -c "pwrite -S 0x61 0 1048576" "$testdir/file2" >> "$seqres.full"
> > +_scratch_remount
> > +
> > +echo "Set extsz and cowextsz on zero byte file"
> > +"$XFS_IO_PROG" -f -c "extsize 1048576" "$testdir/file1" | _filter_scratch
> > +"$XFS_IO_PROG" -f -c "cowextsize 1048576" "$testdir/file1" | _filter_scratch
> > +
> > +echo "Set extsz and cowextsz on 1Mbyte file"
> > +"$XFS_IO_PROG" -f -c "extsize 1048576" "$testdir/file2" | _filter_scratch
> > +"$XFS_IO_PROG" -f -c "cowextsize 1048576" "$testdir/file2" | _filter_scratch
> > +_scratch_remount
> > +
> > +fn() {
> > +	"$XFS_IO_PROG" -c "$1" "$2" | sed -e 's/.\([0-9]*\).*$/\1/g'
> > +}
> > +echo "Check extsz and cowextsz settings on zero byte file"
> > +test $(fn extsize "$testdir/file1") -eq 1048576 || echo "file1 extsize not set"
> > +test $(fn cowextsize "$testdir/file1") -eq 1048576 || echo "file1 cowextsize not set" 
> 
> For this sort of thing, just dump the extent size value to the
> golden output. i.e.
> 
> echo "Check extsz and cowextsz settings on zero byte file"
> $XFS_IO_PROG -c extsize $testdir/file1
> $XFS_IO_PROG -c cowextsize $testdir/file1
> 
> is all that is needed. that way if it fails, we see what value it
> had instead of the expected 1MB. This also makes the test much less
> verbose and easier to read

Done.

> > +
> > +echo "Check extsz and cowextsz settings on 1Mbyte file"
> > +test $(fn extsize "$testdir/file2") -eq 0 || echo "file2 extsize not set"
> > +test $(fn cowextsize "$testdir/file2") -eq 1048576 || echo "file2 cowextsize not set" 
> > +
> > +echo "Set cowextsize and check flag"
> > +"$XFS_IO_PROG" -f -c "cowextsize 1048576" "$testdir/file3" | _filter_scratch
> > +_scratch_remount
> > +test $("$XFS_IO_PROG" -c "stat" "$testdir/file3" | grep 'fsxattr.xflags' | awk '{print $4}' | grep -c 'C') -eq 1 || echo "file3 cowextsz flag not set"
> > +test $(fn cowextsize "$testdir/file3") -eq 1048576 || echo "file3 cowextsize not set"
> > +"$XFS_IO_PROG" -f -c "cowextsize 0" "$testdir/file3" | _filter_scratch
> > +_scratch_remount
> > +test $(fn cowextsize "$testdir/file3") -eq 0 || echo "file3 cowextsize not set"
> > +test $("$XFS_IO_PROG" -c "stat" "$testdir/file3" | grep 'fsxattr.xflags' | awk '{print $4}' | grep -c 'C') -eq 0 || echo "file3 cowextsz flag not set"
> 
> Same with all these - just grep the output for the line you want,
> and the golden output matching does everything else. e.g. the flag
> check simply becomes:
> 
> $XFS_IO_PROG -c "stat" $testdir/file3 | grep 'fsxattr.xflags'
> 
> Again, this tells us what the wrong flags are if it fails...

Done.  It'll probably break whenever we add new flags, but that can be fixed.

--D

> 
> There are quite a few bits of these tests where the same thing
> applies....
> 
> -Dave.
> -- 
> Dave Chinner
> david@fromorbit.com
> 
> _______________________________________________
> xfs mailing list
> xfs@oss.sgi.com
> http://oss.sgi.com/mailman/listinfo/xfs
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diff mbox

Patch

diff --git a/tests/generic/301 b/tests/generic/301
new file mode 100755
index 0000000..c4f70e1
--- /dev/null
+++ b/tests/generic/301
@@ -0,0 +1,105 @@ 
+#! /bin/bash
+# FS QA Test No. 301
+#
+# Test fragmentation after a lot of random CoW:
+# - Create two reflinked files.
+# - Buffered write to random offsets to scatter CoW reservations.
+# - Check the number of extents.
+#
+#-----------------------------------------------------------------------
+# Copyright (c) 2016, 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_scratch_reflink
+_require_cp_reflink
+_require_fiemap
+
+rm -f "$seqres.full"
+
+echo "Format and mount"
+_scratch_mkfs > "$seqres.full" 2>&1
+_scratch_mount >> "$seqres.full" 2>&1
+
+testdir="$SCRATCH_MNT/test-$seq"
+rm -rf $testdir
+mkdir $testdir
+
+blksz=65536
+nr=128
+bsz=16
+
+free_blocks=$(stat -f -c '%a' "$testdir")
+real_blksz=$(stat -f -c '%S' "$testdir")
+space_needed=$(((blksz * nr * 3) * 5 / 4))
+space_avail=$((free_blocks * real_blksz))
+internal_blks=$((blksz * nr / real_blksz))
+test $space_needed -gt $space_avail && _notrun "Not enough space. $space_avail < $space_needed"
+
+echo "Create the original files"
+"$XFS_IO_PROG" -f -c "pwrite -S 0x61 -b $((blksz * bsz)) 0 $((blksz * nr + 1))" "$testdir/file1" >> "$seqres.full"
+_cp_reflink "$testdir/file1" "$testdir/file2" >> "$seqres.full"
+_scratch_remount
+
+echo "Compare files"
+md5sum "$testdir/file1" | _filter_scratch
+md5sum "$testdir/file2" | _filter_scratch
+
+echo "CoW and unmount"
+for i in `seq 1 8`; do
+	"$XFS_IO_PROG" -f -c "pwrite -R -S 0x63 -b $real_blksz 0 $((blksz * nr))" -c "fdatasync" "$testdir/file2" >> "$seqres.full"
+done
+_scratch_remount
+
+echo "Compare files"
+md5sum "$testdir/file1" | _filter_scratch
+
+echo "Check extent counts"
+old_extents=$(_count_extents "$testdir/file1")
+new_extents=$(_count_extents "$testdir/file2")
+
+echo "old extents: $old_extents" >> "$seqres.full"
+echo "new extents: $new_extents" >> "$seqres.full"
+echo "maximum extents: $internal_blks" >> "$seqres.full"
+test $new_extents -lt $((internal_blks * 2 / 3)) || _fail "file2 badly fragmented"
+
+echo "Check for damage"
+umount "$SCRATCH_MNT"
+
+# success, all done
+status=0
+exit
diff --git a/tests/generic/301.out b/tests/generic/301.out
new file mode 100644
index 0000000..668b053
--- /dev/null
+++ b/tests/generic/301.out
@@ -0,0 +1,11 @@ 
+QA output created by 301
+Format and mount
+Create the original files
+Compare files
+2909feb63a37b0e95fe5cfb7f274f7b1  SCRATCH_MNT/test-301/file1
+2909feb63a37b0e95fe5cfb7f274f7b1  SCRATCH_MNT/test-301/file2
+CoW and unmount
+Compare files
+2909feb63a37b0e95fe5cfb7f274f7b1  SCRATCH_MNT/test-301/file1
+Check extent counts
+Check for damage
diff --git a/tests/generic/302 b/tests/generic/302
new file mode 100755
index 0000000..e0aea69
--- /dev/null
+++ b/tests/generic/302
@@ -0,0 +1,105 @@ 
+#! /bin/bash
+# FS QA Test No. 302
+#
+# Test fragmentation after a lot of random CoW:
+# - Create two reflinked files.
+# - Directio write to random offsets to scatter CoW reservations.
+# - Check the number of extents.
+#
+#-----------------------------------------------------------------------
+# Copyright (c) 2016, 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_scratch_reflink
+_require_cp_reflink
+_require_fiemap
+
+rm -f "$seqres.full"
+
+echo "Format and mount"
+_scratch_mkfs > "$seqres.full" 2>&1
+_scratch_mount >> "$seqres.full" 2>&1
+
+testdir="$SCRATCH_MNT/test-$seq"
+rm -rf $testdir
+mkdir $testdir
+
+blksz=65536
+nr=128
+bsz=16
+
+free_blocks=$(stat -f -c '%a' "$testdir")
+real_blksz=$(stat -f -c '%S' "$testdir")
+space_needed=$(((blksz * nr * 3) * 5 / 4))
+space_avail=$((free_blocks * real_blksz))
+internal_blks=$((blksz * nr / real_blksz))
+test $space_needed -gt $space_avail && _notrun "Not enough space. $space_avail < $space_needed"
+
+echo "Create the original files"
+"$XFS_IO_PROG" -f -c "pwrite -S 0x61 -b $((blksz * bsz)) 0 $((blksz * nr + 1))" "$testdir/file1" >> "$seqres.full"
+_cp_reflink "$testdir/file1" "$testdir/file2" >> "$seqres.full"
+_scratch_remount
+
+echo "Compare files"
+md5sum "$testdir/file1" | _filter_scratch
+md5sum "$testdir/file2" | _filter_scratch
+
+echo "CoW and unmount"
+for i in `seq 1 8`; do
+	"$XFS_IO_PROG" -d -f -c "pwrite -R -S 0x63 -b $real_blksz 0 $((blksz * nr))" "$testdir/file2" >> "$seqres.full"
+done
+_scratch_remount
+
+echo "Compare files"
+md5sum "$testdir/file1" | _filter_scratch
+
+echo "Check extent counts"
+old_extents=$(_count_extents "$testdir/file1")
+new_extents=$(_count_extents "$testdir/file2")
+
+echo "old extents: $old_extents" >> "$seqres.full"
+echo "new extents: $new_extents" >> "$seqres.full"
+echo "maximum extents: $internal_blks" >> "$seqres.full"
+test $new_extents -le $internal_blks || _fail "file2 badly fragmented"
+
+echo "Check for damage"
+umount "$SCRATCH_MNT"
+
+# success, all done
+status=0
+exit
diff --git a/tests/generic/302.out b/tests/generic/302.out
new file mode 100644
index 0000000..002e54d
--- /dev/null
+++ b/tests/generic/302.out
@@ -0,0 +1,11 @@ 
+QA output created by 302
+Format and mount
+Create the original files
+Compare files
+2909feb63a37b0e95fe5cfb7f274f7b1  SCRATCH_MNT/test-302/file1
+2909feb63a37b0e95fe5cfb7f274f7b1  SCRATCH_MNT/test-302/file2
+CoW and unmount
+Compare files
+2909feb63a37b0e95fe5cfb7f274f7b1  SCRATCH_MNT/test-302/file1
+Check extent counts
+Check for damage
diff --git a/tests/generic/group b/tests/generic/group
index 3798f3b..7e1ea72 100644
--- a/tests/generic/group
+++ b/tests/generic/group
@@ -303,6 +303,8 @@ 
 298 auto quick clone
 299 auto aio enospc rw stress
 300 auto aio enospc preallocrw stress
+301 auto quick clone
+302 auto quick clone
 306 auto quick rw
 307 auto quick
 308 auto quick
diff --git a/tests/xfs/180 b/tests/xfs/180
new file mode 100755
index 0000000..0bbece0
--- /dev/null
+++ b/tests/xfs/180
@@ -0,0 +1,111 @@ 
+#! /bin/bash
+# FS QA Test No. 180
+#
+# Test fragmentation after a lot of random CoW:
+# - Create two reflinked files.  Set extsz hint on second file.
+# - Buffered write to random offsets to scatter CoW reservations.
+# - Rewrite the whole file to use up reservations.
+# - Check the number of extents.
+#
+#-----------------------------------------------------------------------
+# Copyright (c) 2016, 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
+_supported_fs xfs
+_require_scratch_reflink
+_require_cp_reflink
+_require_fiemap
+_require_xfs_io_command "cowextsize"
+
+rm -f "$seqres.full"
+
+echo "Format and mount"
+_scratch_mkfs > "$seqres.full" 2>&1
+_scratch_mount >> "$seqres.full" 2>&1
+
+testdir="$SCRATCH_MNT/test-$seq"
+rm -rf $testdir
+mkdir $testdir
+
+blksz=65536
+nr=128
+bsz=16
+
+free_blocks=$(stat -f -c '%a' "$testdir")
+real_blksz=$(stat -f -c '%S' "$testdir")
+space_needed=$(((blksz * nr * 3) * 5 / 4))
+space_avail=$((free_blocks * real_blksz))
+internal_blks=$((blksz * nr / real_blksz))
+test $space_needed -gt $space_avail && _notrun "Not enough space. $space_avail < $space_needed"
+
+echo "Create the original files"
+"$XFS_IO_PROG" -f -c "pwrite -S 0x61 -b $((blksz * bsz)) 0 $((blksz * nr + 1))" "$testdir/file1" >> "$seqres.full"
+"$XFS_IO_PROG" -f -c "cowextsize $((blksz * bsz))" "$testdir/file2"
+_cp_reflink "$testdir/file1" "$testdir/file2" >> "$seqres.full"
+_scratch_remount
+
+echo "Compare files"
+md5sum "$testdir/file1" | _filter_scratch
+md5sum "$testdir/file2" | _filter_scratch
+
+echo "CoW and unmount"
+"$XFS_IO_PROG" -f -c "cowextsize" "$testdir/file2" >> "$seqres.full"
+"$XFS_IO_PROG" -f -c "pwrite -R -S 0x63 -b $real_blksz 0 $((blksz * nr))" -c "fdatasync" "$testdir/file2" >> "$seqres.full"
+"$XFS_IO_PROG" -f -c "pwrite -S 0x63 -b $real_blksz 0 $((blksz * nr + 1))" -c "fdatasync" "$testdir/file2" >> "$seqres.full"
+_scratch_remount
+
+echo "Compare files"
+md5sum "$testdir/file1" | _filter_scratch
+md5sum "$testdir/file2" | _filter_scratch
+
+echo "Check extent counts"
+old_extents=$(_count_extents "$testdir/file1")
+new_extents=$(_count_extents "$testdir/file2")
+
+echo "old extents: $old_extents" >> "$seqres.full"
+echo "new extents: $new_extents" >> "$seqres.full"
+echo "maximum extents: $internal_blks" >> "$seqres.full"
+test $new_extents -lt $((internal_blks / 20)) || test $new_extents -lt 15 \
+	|| _fail "file2 badly fragmented"
+
+echo "Check for damage"
+umount "$SCRATCH_MNT"
+
+# success, all done
+status=0
+exit
diff --git a/tests/xfs/180.out b/tests/xfs/180.out
new file mode 100644
index 0000000..b538430
--- /dev/null
+++ b/tests/xfs/180.out
@@ -0,0 +1,12 @@ 
+QA output created by 180
+Format and mount
+Create the original files
+Compare files
+2909feb63a37b0e95fe5cfb7f274f7b1  SCRATCH_MNT/test-180/file1
+2909feb63a37b0e95fe5cfb7f274f7b1  SCRATCH_MNT/test-180/file2
+CoW and unmount
+Compare files
+2909feb63a37b0e95fe5cfb7f274f7b1  SCRATCH_MNT/test-180/file1
+d41f6527bc8320364e12ea7076140b8b  SCRATCH_MNT/test-180/file2
+Check extent counts
+Check for damage
diff --git a/tests/xfs/182 b/tests/xfs/182
new file mode 100755
index 0000000..8a32671
--- /dev/null
+++ b/tests/xfs/182
@@ -0,0 +1,111 @@ 
+#! /bin/bash
+# FS QA Test No. 182
+#
+# Test fragmentation after a lot of random CoW:
+# - Create two reflinked files.  Set extsz hint on second file.
+# - Directio write to random offsets to scatter CoW reservations.
+# - Rewrite the whole file to use up reservations.
+# - Check the number of extents.
+#
+#-----------------------------------------------------------------------
+# Copyright (c) 2016, 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
+_supported_fs xfs
+_require_scratch_reflink
+_require_cp_reflink
+_require_fiemap
+_require_xfs_io_command "cowextsize"
+
+rm -f "$seqres.full"
+
+echo "Format and mount"
+_scratch_mkfs > "$seqres.full" 2>&1
+_scratch_mount >> "$seqres.full" 2>&1
+
+testdir="$SCRATCH_MNT/test-$seq"
+rm -rf $testdir
+mkdir $testdir
+
+blksz=65536
+nr=128
+bsz=16
+
+free_blocks=$(stat -f -c '%a' "$testdir")
+real_blksz=$(stat -f -c '%S' "$testdir")
+space_needed=$(((blksz * nr * 3) * 5 / 4))
+space_avail=$((free_blocks * real_blksz))
+internal_blks=$((blksz * nr / real_blksz))
+test $space_needed -gt $space_avail && _notrun "Not enough space. $space_avail < $space_needed"
+
+echo "Create the original files"
+"$XFS_IO_PROG" -f -c "pwrite -S 0x61 -b $((blksz * bsz)) 0 $((blksz * nr + 1))" "$testdir/file1" >> "$seqres.full"
+"$XFS_IO_PROG" -f -c "cowextsize $((blksz * bsz))" "$testdir/file2"
+_cp_reflink "$testdir/file1" "$testdir/file2" >> "$seqres.full"
+_scratch_remount
+
+echo "Compare files"
+md5sum "$testdir/file1" | _filter_scratch
+md5sum "$testdir/file2" | _filter_scratch
+
+echo "CoW and unmount"
+"$XFS_IO_PROG" -f -c "cowextsize" "$testdir/file2" >> "$seqres.full"
+"$XFS_IO_PROG" -d -f -c "pwrite -R -S 0x63 -b $real_blksz 0 $((blksz * nr + 1))" "$testdir/file2" >> "$seqres.full"
+"$XFS_IO_PROG" -d -f -c "pwrite -S 0x63 -b $real_blksz 0 $((blksz * nr + 1))" "$testdir/file2" >> "$seqres.full"
+_scratch_remount
+
+echo "Compare files"
+md5sum "$testdir/file1" | _filter_scratch
+md5sum "$testdir/file2" | _filter_scratch
+
+echo "Check extent counts"
+old_extents=$(_count_extents "$testdir/file1")
+new_extents=$(_count_extents "$testdir/file2")
+
+echo "old extents: $old_extents" >> "$seqres.full"
+echo "new extents: $new_extents" >> "$seqres.full"
+echo "maximum extents: $internal_blks" >> "$seqres.full"
+test $new_extents -lt $((internal_blks / 20)) || test $new_extents -lt 15 \
+	|| _fail "file2 badly fragmented"
+
+echo "Check for damage"
+umount "$SCRATCH_MNT"
+
+# success, all done
+status=0
+exit
diff --git a/tests/xfs/182.out b/tests/xfs/182.out
new file mode 100644
index 0000000..49a18e6
--- /dev/null
+++ b/tests/xfs/182.out
@@ -0,0 +1,13 @@ 
+QA output created by 182
+Format and mount
+Create the original files
+Compare files
+2909feb63a37b0e95fe5cfb7f274f7b1  SCRATCH_MNT/test-182/file1
+2909feb63a37b0e95fe5cfb7f274f7b1  SCRATCH_MNT/test-182/file2
+CoW and unmount
+pwrite64: Invalid argument
+Compare files
+2909feb63a37b0e95fe5cfb7f274f7b1  SCRATCH_MNT/test-182/file1
+c6ba35da9f73ced20d7781a448cc11d4  SCRATCH_MNT/test-182/file2
+Check extent counts
+Check for damage
diff --git a/tests/xfs/184 b/tests/xfs/184
new file mode 100755
index 0000000..27bd00f
--- /dev/null
+++ b/tests/xfs/184
@@ -0,0 +1,110 @@ 
+#! /bin/bash
+# FS QA Test No. 184
+#
+# Test fragmentation after a lot of random CoW:
+# - Create two reflinked files.  Set extsz hint on second file.
+# - Buffered write to random offsets to scatter CoW reservations.
+# - falloc the whole file to unshare blocks.
+# - Check the number of extents.
+#
+#-----------------------------------------------------------------------
+# Copyright (c) 2016, 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
+_supported_fs xfs
+_require_scratch_reflink
+_require_cp_reflink
+_require_fiemap
+_require_xfs_io_command "cowextsize"
+
+rm -f "$seqres.full"
+
+echo "Format and mount"
+_scratch_mkfs > "$seqres.full" 2>&1
+_scratch_mount >> "$seqres.full" 2>&1
+
+testdir="$SCRATCH_MNT/test-$seq"
+rm -rf $testdir
+mkdir $testdir
+
+blksz=65536
+nr=128
+bsz=16
+
+free_blocks=$(stat -f -c '%a' "$testdir")
+real_blksz=$(stat -f -c '%S' "$testdir")
+space_needed=$(((blksz * nr * 3) * 5 / 4))
+space_avail=$((free_blocks * real_blksz))
+internal_blks=$((blksz * nr / real_blksz))
+test $space_needed -gt $space_avail && _notrun "Not enough space. $space_avail < $space_needed"
+
+echo "Create the original files"
+"$XFS_IO_PROG" -f -c "pwrite -S 0x61 -b $((blksz * bsz)) 0 $((blksz * nr + 1))" "$testdir/file1" >> "$seqres.full"
+"$XFS_IO_PROG" -f -c "cowextsize $((blksz * bsz))" "$testdir/file2"
+_cp_reflink "$testdir/file1" "$testdir/file2" >> "$seqres.full"
+_scratch_remount
+
+echo "Compare files"
+md5sum "$testdir/file1" | _filter_scratch
+md5sum "$testdir/file2" | _filter_scratch
+
+echo "CoW and unmount"
+"$XFS_IO_PROG" -f -c "cowextsize" "$testdir/file2" >> "$seqres.full"
+"$XFS_IO_PROG" -f -c "pwrite -R -S 0x63 -b $real_blksz 0 $((blksz * nr + 1))" -c "fdatasync" "$testdir/file2" >> "$seqres.full"
+"$XFS_IO_PROG" -f -c "falloc 0 $((blksz * nr + 1))" "$testdir/file2" >> "$seqres.full"
+_scratch_remount
+
+echo "Compare files"
+md5sum "$testdir/file1" | _filter_scratch
+
+echo "Check extent counts"
+old_extents=$(_count_extents "$testdir/file1")
+new_extents=$(_count_extents "$testdir/file2")
+
+echo "old extents: $old_extents" >> "$seqres.full"
+echo "new extents: $new_extents" >> "$seqres.full"
+echo "maximum extents: $internal_blks" >> "$seqres.full"
+test $new_extents -lt $((internal_blks / 20)) || test $new_extents -lt 15 \
+	|| _fail "file2 badly fragmented"
+
+echo "Check for damage"
+umount "$SCRATCH_MNT"
+
+# success, all done
+status=0
+exit
diff --git a/tests/xfs/184.out b/tests/xfs/184.out
new file mode 100644
index 0000000..8a329c2
--- /dev/null
+++ b/tests/xfs/184.out
@@ -0,0 +1,11 @@ 
+QA output created by 184
+Format and mount
+Create the original files
+Compare files
+2909feb63a37b0e95fe5cfb7f274f7b1  SCRATCH_MNT/test-184/file1
+2909feb63a37b0e95fe5cfb7f274f7b1  SCRATCH_MNT/test-184/file2
+CoW and unmount
+Compare files
+2909feb63a37b0e95fe5cfb7f274f7b1  SCRATCH_MNT/test-184/file1
+Check extent counts
+Check for damage
diff --git a/tests/xfs/192 b/tests/xfs/192
new file mode 100755
index 0000000..7cdd707
--- /dev/null
+++ b/tests/xfs/192
@@ -0,0 +1,110 @@ 
+#! /bin/bash
+# FS QA Test No. 192
+#
+# Test fragmentation after a lot of random CoW:
+# - Create two reflinked files.  Set extsz hint on second file.
+# - Directio write to random offsets to scatter CoW reservations.
+# - falloc the whole file to unshare blocks.
+# - Check the number of extents.
+#
+#-----------------------------------------------------------------------
+# Copyright (c) 2016, 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
+_supported_fs xfs
+_require_scratch_reflink
+_require_cp_reflink
+_require_fiemap
+_require_xfs_io_command "cowextsize"
+
+rm -f "$seqres.full"
+
+echo "Format and mount"
+_scratch_mkfs > "$seqres.full" 2>&1
+_scratch_mount >> "$seqres.full" 2>&1
+
+testdir="$SCRATCH_MNT/test-$seq"
+rm -rf $testdir
+mkdir $testdir
+
+blksz=65536
+nr=128
+bsz=16
+
+free_blocks=$(stat -f -c '%a' "$testdir")
+real_blksz=$(stat -f -c '%S' "$testdir")
+space_needed=$(((blksz * nr * 3) * 5 / 4))
+space_avail=$((free_blocks * real_blksz))
+internal_blks=$((blksz * nr / real_blksz))
+test $space_needed -gt $space_avail && _notrun "Not enough space. $space_avail < $space_needed"
+
+echo "Create the original files"
+"$XFS_IO_PROG" -f -c "pwrite -S 0x61 -b $((blksz * bsz)) 0 $((blksz * nr + 1))" "$testdir/file1" >> "$seqres.full"
+"$XFS_IO_PROG" -f -c "cowextsize $((blksz * bsz))" "$testdir/file2"
+_cp_reflink "$testdir/file1" "$testdir/file2" >> "$seqres.full"
+_scratch_remount
+
+echo "Compare files"
+md5sum "$testdir/file1" | _filter_scratch
+md5sum "$testdir/file2" | _filter_scratch
+
+echo "CoW and unmount"
+"$XFS_IO_PROG" -f -c "cowextsize" "$testdir/file2" >> "$seqres.full"
+"$XFS_IO_PROG" -d -f -c "pwrite -R -S 0x63 -b $real_blksz 0 $((blksz * nr))" "$testdir/file2" >> "$seqres.full"
+"$XFS_IO_PROG" -d -f -c "falloc 0 $((blksz * nr))" "$testdir/file2" >> "$seqres.full"
+_scratch_remount
+
+echo "Compare files"
+md5sum "$testdir/file1" | _filter_scratch
+
+echo "Check extent counts"
+old_extents=$(_count_extents "$testdir/file1")
+new_extents=$(_count_extents "$testdir/file2")
+
+echo "old extents: $old_extents" >> "$seqres.full"
+echo "new extents: $new_extents" >> "$seqres.full"
+echo "maximum extents: $internal_blks" >> "$seqres.full"
+test $new_extents -lt $((internal_blks / 20)) || test $new_extents -lt 15 \
+	|| _fail "file2 badly fragmented"
+
+echo "Check for damage"
+umount "$SCRATCH_MNT"
+
+# success, all done
+status=0
+exit
diff --git a/tests/xfs/192.out b/tests/xfs/192.out
new file mode 100644
index 0000000..b65e107
--- /dev/null
+++ b/tests/xfs/192.out
@@ -0,0 +1,11 @@ 
+QA output created by 192
+Format and mount
+Create the original files
+Compare files
+2909feb63a37b0e95fe5cfb7f274f7b1  SCRATCH_MNT/test-192/file1
+2909feb63a37b0e95fe5cfb7f274f7b1  SCRATCH_MNT/test-192/file2
+CoW and unmount
+Compare files
+2909feb63a37b0e95fe5cfb7f274f7b1  SCRATCH_MNT/test-192/file1
+Check extent counts
+Check for damage
diff --git a/tests/xfs/193 b/tests/xfs/193
new file mode 100755
index 0000000..d42c3da
--- /dev/null
+++ b/tests/xfs/193
@@ -0,0 +1,107 @@ 
+#! /bin/bash
+# FS QA Test No. 193
+#
+# Test fragmentation after a lot of random CoW:
+# - Create two reflinked files.  Set extsz hint on second file.
+# - Buffered write to random offsets to scatter CoW reservations.
+# - Check the number of extents.
+#
+#-----------------------------------------------------------------------
+# Copyright (c) 2016, 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
+_supported_fs xfs
+_require_scratch_reflink
+_require_cp_reflink
+_require_fiemap
+_require_xfs_io_command "cowextsize"
+
+rm -f "$seqres.full"
+
+echo "Format and mount"
+_scratch_mkfs > "$seqres.full" 2>&1
+_scratch_mount >> "$seqres.full" 2>&1
+
+testdir="$SCRATCH_MNT/test-$seq"
+rm -rf $testdir
+mkdir $testdir
+
+blksz=65536
+nr=128
+bsz=16
+
+free_blocks=$(stat -f -c '%a' "$testdir")
+real_blksz=$(stat -f -c '%S' "$testdir")
+space_needed=$(((blksz * nr * 3) * 5 / 4))
+space_avail=$((free_blocks * real_blksz))
+internal_blks=$((blksz * nr / real_blksz))
+test $space_needed -gt $space_avail && _notrun "Not enough space. $space_avail < $space_needed"
+
+echo "Create the original files"
+"$XFS_IO_PROG" -f -c "pwrite -S 0x61 -b $((blksz * bsz)) 0 $((blksz * nr + 1))" "$testdir/file1" >> "$seqres.full"
+"$XFS_IO_PROG" -f -c "cowextsize $((blksz * bsz))" "$testdir/file2"
+_cp_reflink "$testdir/file1" "$testdir/file2" >> "$seqres.full"
+_scratch_remount
+
+echo "Compare files"
+md5sum "$testdir/file1" | _filter_scratch
+md5sum "$testdir/file2" | _filter_scratch
+
+echo "CoW and unmount"
+"$XFS_IO_PROG" -f -c "cowextsize" "$testdir/file2" >> "$seqres.full"
+"$XFS_IO_PROG" -f -c "pwrite -R -S 0x63 -b $real_blksz 0 $((blksz * nr))" -c "fdatasync" "$testdir/file2" >> "$seqres.full"
+_scratch_remount
+
+echo "Compare files"
+md5sum "$testdir/file1" | _filter_scratch
+
+echo "Check extent counts"
+old_extents=$(_count_extents "$testdir/file1")
+new_extents=$(_count_extents "$testdir/file2")
+
+echo "old extents: $old_extents" >> "$seqres.full"
+echo "new extents: $new_extents" >> "$seqres.full"
+echo "maximum extents: $internal_blks" >> "$seqres.full"
+test $new_extents -lt $((internal_blks * 2 / 3)) || _fail "file2 badly fragmented"
+
+echo "Check for damage"
+umount "$SCRATCH_MNT"
+
+# success, all done
+status=0
+exit
diff --git a/tests/xfs/193.out b/tests/xfs/193.out
new file mode 100644
index 0000000..9ba6ea5
--- /dev/null
+++ b/tests/xfs/193.out
@@ -0,0 +1,11 @@ 
+QA output created by 193
+Format and mount
+Create the original files
+Compare files
+2909feb63a37b0e95fe5cfb7f274f7b1  SCRATCH_MNT/test-193/file1
+2909feb63a37b0e95fe5cfb7f274f7b1  SCRATCH_MNT/test-193/file2
+CoW and unmount
+Compare files
+2909feb63a37b0e95fe5cfb7f274f7b1  SCRATCH_MNT/test-193/file1
+Check extent counts
+Check for damage
diff --git a/tests/xfs/198 b/tests/xfs/198
new file mode 100755
index 0000000..aade7b8
--- /dev/null
+++ b/tests/xfs/198
@@ -0,0 +1,107 @@ 
+#! /bin/bash
+# FS QA Test No. 198
+#
+# Test fragmentation after a lot of random CoW:
+# - Create two reflinked files.  Set extsz hint on second file.
+# - Directio write to random offsets to scatter CoW reservations.
+# - Check the number of extents.
+#
+#-----------------------------------------------------------------------
+# Copyright (c) 2016, 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
+_supported_fs xfs
+_require_scratch_reflink
+_require_cp_reflink
+_require_fiemap
+_require_xfs_io_command "cowextsize"
+
+rm -f "$seqres.full"
+
+echo "Format and mount"
+_scratch_mkfs > "$seqres.full" 2>&1
+_scratch_mount >> "$seqres.full" 2>&1
+
+testdir="$SCRATCH_MNT/test-$seq"
+rm -rf $testdir
+mkdir $testdir
+
+blksz=65536
+nr=128
+bsz=16
+
+free_blocks=$(stat -f -c '%a' "$testdir")
+real_blksz=$(stat -f -c '%S' "$testdir")
+space_needed=$(((blksz * nr * 3) * 5 / 4))
+space_avail=$((free_blocks * real_blksz))
+internal_blks=$((blksz * nr / real_blksz))
+test $space_needed -gt $space_avail && _notrun "Not enough space. $space_avail < $space_needed"
+
+echo "Create the original files"
+"$XFS_IO_PROG" -f -c "pwrite -S 0x61 -b $((blksz * bsz)) 0 $((blksz * nr + 1))" "$testdir/file1" >> "$seqres.full"
+"$XFS_IO_PROG" -f -c "cowextsize $((blksz * bsz))" "$testdir/file2"
+_cp_reflink "$testdir/file1" "$testdir/file2" >> "$seqres.full"
+_scratch_remount
+
+echo "Compare files"
+md5sum "$testdir/file1" | _filter_scratch
+md5sum "$testdir/file2" | _filter_scratch
+
+echo "CoW and unmount"
+"$XFS_IO_PROG" -f -c "cowextsize" "$testdir/file2" >> "$seqres.full"
+"$XFS_IO_PROG" -d -f -c "pwrite -R -S 0x63 -b $real_blksz 0 $((blksz * nr))" "$testdir/file2" >> "$seqres.full"
+_scratch_remount
+
+echo "Compare files"
+md5sum "$testdir/file1" | _filter_scratch
+
+echo "Check extent counts"
+old_extents=$(_count_extents "$testdir/file1")
+new_extents=$(_count_extents "$testdir/file2")
+
+echo "old extents: $old_extents" >> "$seqres.full"
+echo "new extents: $new_extents" >> "$seqres.full"
+echo "maximum extents: $internal_blks" >> "$seqres.full"
+test $new_extents -lt $((internal_blks * 2 / 3)) || _fail "file2 badly fragmented"
+
+echo "Check for damage"
+umount "$SCRATCH_MNT"
+
+# success, all done
+status=0
+exit
diff --git a/tests/xfs/198.out b/tests/xfs/198.out
new file mode 100644
index 0000000..9e05a17
--- /dev/null
+++ b/tests/xfs/198.out
@@ -0,0 +1,11 @@ 
+QA output created by 198
+Format and mount
+Create the original files
+Compare files
+2909feb63a37b0e95fe5cfb7f274f7b1  SCRATCH_MNT/test-198/file1
+2909feb63a37b0e95fe5cfb7f274f7b1  SCRATCH_MNT/test-198/file2
+CoW and unmount
+Compare files
+2909feb63a37b0e95fe5cfb7f274f7b1  SCRATCH_MNT/test-198/file1
+Check extent counts
+Check for damage
diff --git a/tests/xfs/200 b/tests/xfs/200
new file mode 100755
index 0000000..1d0e415
--- /dev/null
+++ b/tests/xfs/200
@@ -0,0 +1,114 @@ 
+#! /bin/bash
+# FS QA Test No. 200
+#
+# Test fragmentation after a lot of random CoW:
+# - Create two reflinked files.  Set extsz hint on second file.
+# - Read the whole file into memory.
+# - Buffered write to random offsets to scatter CoW reservations.
+# - fadvise(dontneed) the whole file to evict the pages.
+# - falloc the whole fle to see if the extsz hints still apply.
+# - Check the number of extents.
+#
+#-----------------------------------------------------------------------
+# Copyright (c) 2016, 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
+_supported_fs xfs
+_require_scratch_reflink
+_require_cp_reflink
+_require_fiemap
+_require_xfs_io_command "cowextsize"
+
+rm -f "$seqres.full"
+
+echo "Format and mount"
+_scratch_mkfs > "$seqres.full" 2>&1
+_scratch_mount >> "$seqres.full" 2>&1
+
+testdir="$SCRATCH_MNT/test-$seq"
+rm -rf $testdir
+mkdir $testdir
+
+blksz=65536
+nr=128
+bsz=16
+
+free_blocks=$(stat -f -c '%a' "$testdir")
+real_blksz=$(stat -f -c '%S' "$testdir")
+space_needed=$(((blksz * nr * 3) * 5 / 4))
+space_avail=$((free_blocks * real_blksz))
+internal_blks=$((blksz * nr / real_blksz))
+test $space_needed -gt $space_avail && _notrun "Not enough space. $space_avail < $space_needed"
+
+echo "Create the original files"
+"$XFS_IO_PROG" -f -c "pwrite -S 0x61 -b $((blksz * bsz)) 0 $((blksz * nr + 1))" "$testdir/file1" >> "$seqres.full"
+"$XFS_IO_PROG" -f -c "cowextsize $((blksz * bsz))" "$testdir/file2"
+_cp_reflink "$testdir/file1" "$testdir/file2" >> "$seqres.full"
+_scratch_remount
+
+echo "Compare files"
+md5sum "$testdir/file1" | _filter_scratch
+md5sum "$testdir/file2" | _filter_scratch
+
+echo "CoW and unmount"
+"$XFS_IO_PROG" -f -c "cowextsize" "$testdir/file2" >> "$seqres.full"
+cat "$testdir/file2" > /dev/null
+"$XFS_IO_PROG" -f -c "pwrite -R -S 0x63 -b $real_blksz 0 $((blksz * nr))" -c "fdatasync" "$testdir/file2" >> "$seqres.full"
+"$XFS_IO_PROG" -f -c "fadvise -d 0 $((blksz * nr))" -c "fsync" "$testdir/file2" >> "$seqres.full"
+"$XFS_IO_PROG" -f -c "falloc 0 $((blksz * nr))" "$testdir/file2" >> "$seqres.full"
+_scratch_remount
+
+echo "Compare files"
+md5sum "$testdir/file1" | _filter_scratch
+
+echo "Check extent counts"
+old_extents=$(_count_extents "$testdir/file1")
+new_extents=$(_count_extents "$testdir/file2")
+
+echo "old extents: $old_extents" >> "$seqres.full"
+echo "new extents: $new_extents" >> "$seqres.full"
+echo "maximum extents: $internal_blks" >> "$seqres.full"
+test $new_extents -lt $((internal_blks / 20)) || test $new_extents -lt 15 \
+	|| _fail "file2 badly fragmented"
+
+echo "Check for damage"
+umount "$SCRATCH_MNT"
+
+# success, all done
+status=0
+exit
diff --git a/tests/xfs/200.out b/tests/xfs/200.out
new file mode 100644
index 0000000..57a2726
--- /dev/null
+++ b/tests/xfs/200.out
@@ -0,0 +1,11 @@ 
+QA output created by 200
+Format and mount
+Create the original files
+Compare files
+2909feb63a37b0e95fe5cfb7f274f7b1  SCRATCH_MNT/test-200/file1
+2909feb63a37b0e95fe5cfb7f274f7b1  SCRATCH_MNT/test-200/file2
+CoW and unmount
+Compare files
+2909feb63a37b0e95fe5cfb7f274f7b1  SCRATCH_MNT/test-200/file1
+Check extent counts
+Check for damage
diff --git a/tests/xfs/204 b/tests/xfs/204
new file mode 100755
index 0000000..507cfc3
--- /dev/null
+++ b/tests/xfs/204
@@ -0,0 +1,114 @@ 
+#! /bin/bash
+# FS QA Test No. 204
+#
+# Test fragmentation after a lot of random CoW:
+# - Create two reflinked files.  Set extsz hint on second file.
+# - Read the whole file into memory.
+# - DIO write to random offsets to scatter CoW reservations.
+# - fadvise(dontneed) the whole file to evict the pages.
+# - falloc the whole fle to see if the extsz hints still apply.
+# - Check the number of extents.
+#
+#-----------------------------------------------------------------------
+# Copyright (c) 2016, 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
+_supported_fs xfs
+_require_scratch_reflink
+_require_cp_reflink
+_require_fiemap
+_require_xfs_io_command "cowextsize"
+
+rm -f "$seqres.full"
+
+echo "Format and mount"
+_scratch_mkfs > "$seqres.full" 2>&1
+_scratch_mount >> "$seqres.full" 2>&1
+
+testdir="$SCRATCH_MNT/test-$seq"
+rm -rf $testdir
+mkdir $testdir
+
+blksz=65536
+nr=128
+bsz=16
+
+free_blocks=$(stat -f -c '%a' "$testdir")
+real_blksz=$(stat -f -c '%S' "$testdir")
+space_needed=$(((blksz * nr * 3) * 5 / 4))
+space_avail=$((free_blocks * real_blksz))
+internal_blks=$((blksz * nr / real_blksz))
+test $space_needed -gt $space_avail && _notrun "Not enough space. $space_avail < $space_needed"
+
+echo "Create the original files"
+"$XFS_IO_PROG" -f -c "pwrite -S 0x61 -b $((blksz * bsz)) 0 $((blksz * nr + 1))" "$testdir/file1" >> "$seqres.full"
+"$XFS_IO_PROG" -f -c "cowextsize $((blksz * bsz))" "$testdir/file2"
+_cp_reflink "$testdir/file1" "$testdir/file2" >> "$seqres.full"
+_scratch_remount
+
+echo "Compare files"
+md5sum "$testdir/file1" | _filter_scratch
+md5sum "$testdir/file2" | _filter_scratch
+
+echo "CoW and unmount"
+"$XFS_IO_PROG" -f -c "cowextsize" "$testdir/file2" >> "$seqres.full"
+cat "$testdir/file2" > /dev/null
+"$XFS_IO_PROG" -d -f -c "pwrite -R -S 0x63 -b $real_blksz 0 $((blksz * nr))" -c "fdatasync" "$testdir/file2" >> "$seqres.full"
+"$XFS_IO_PROG" -f -c "fadvise -d 0 $((blksz * nr))" -c "fsync" "$testdir/file2" >> "$seqres.full"
+"$XFS_IO_PROG" -f -c "falloc 0 $((blksz * nr))" "$testdir/file2" >> "$seqres.full"
+_scratch_remount
+
+echo "Compare files"
+md5sum "$testdir/file1" | _filter_scratch
+
+echo "Check extent counts"
+old_extents=$(_count_extents "$testdir/file1")
+new_extents=$(_count_extents "$testdir/file2")
+
+echo "old extents: $old_extents" >> "$seqres.full"
+echo "new extents: $new_extents" >> "$seqres.full"
+echo "maximum extents: $internal_blks" >> "$seqres.full"
+test $new_extents -lt $((internal_blks / 20)) || test $new_extents -lt 15 \
+	|| _fail "file2 badly fragmented"
+
+echo "Check for damage"
+umount "$SCRATCH_MNT"
+
+# success, all done
+status=0
+exit
diff --git a/tests/xfs/204.out b/tests/xfs/204.out
new file mode 100644
index 0000000..0b46503
--- /dev/null
+++ b/tests/xfs/204.out
@@ -0,0 +1,11 @@ 
+QA output created by 204
+Format and mount
+Create the original files
+Compare files
+2909feb63a37b0e95fe5cfb7f274f7b1  SCRATCH_MNT/test-204/file1
+2909feb63a37b0e95fe5cfb7f274f7b1  SCRATCH_MNT/test-204/file2
+CoW and unmount
+Compare files
+2909feb63a37b0e95fe5cfb7f274f7b1  SCRATCH_MNT/test-204/file1
+Check extent counts
+Check for damage
diff --git a/tests/xfs/207 b/tests/xfs/207
new file mode 100755
index 0000000..d8d7e90
--- /dev/null
+++ b/tests/xfs/207
@@ -0,0 +1,104 @@ 
+#! /bin/bash
+# FS QA Test No. 207
+#
+# Test setting the extsz and cowextsz hints:
+# - Ensure that we can set both on a zero-byte file.
+# - Ensure that we can set only cowextsz on a many-byte file.
+# - Ensure that whatever we set we get back later.
+#
+#-----------------------------------------------------------------------
+# Copyright (c) 2016, 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
+_supported_fs xfs
+_require_scratch_reflink
+_require_cp_reflink
+_require_fiemap
+_require_xfs_io_command "cowextsize"
+
+rm -f "$seqres.full"
+
+echo "Format and mount"
+_scratch_mkfs > "$seqres.full" 2>&1
+_scratch_mount >> "$seqres.full" 2>&1
+
+testdir="$SCRATCH_MNT/test-$seq"
+rm -rf $testdir
+mkdir $testdir
+
+echo "Create the original files"
+"$XFS_IO_PROG" -f -c "pwrite -S 0x61 0 0" "$testdir/file1" >> "$seqres.full"
+"$XFS_IO_PROG" -f -c "pwrite -S 0x61 0 1048576" "$testdir/file2" >> "$seqres.full"
+_scratch_remount
+
+echo "Set extsz and cowextsz on zero byte file"
+"$XFS_IO_PROG" -f -c "extsize 1048576" "$testdir/file1" | _filter_scratch
+"$XFS_IO_PROG" -f -c "cowextsize 1048576" "$testdir/file1" | _filter_scratch
+
+echo "Set extsz and cowextsz on 1Mbyte file"
+"$XFS_IO_PROG" -f -c "extsize 1048576" "$testdir/file2" | _filter_scratch
+"$XFS_IO_PROG" -f -c "cowextsize 1048576" "$testdir/file2" | _filter_scratch
+_scratch_remount
+
+fn() {
+	"$XFS_IO_PROG" -c "$1" "$2" | sed -e 's/.\([0-9]*\).*$/\1/g'
+}
+echo "Check extsz and cowextsz settings on zero byte file"
+test $(fn extsize "$testdir/file1") -eq 1048576 || echo "file1 extsize not set"
+test $(fn cowextsize "$testdir/file1") -eq 1048576 || echo "file1 cowextsize not set" 
+
+echo "Check extsz and cowextsz settings on 1Mbyte file"
+test $(fn extsize "$testdir/file2") -eq 0 || echo "file2 extsize not set"
+test $(fn cowextsize "$testdir/file2") -eq 1048576 || echo "file2 cowextsize not set" 
+
+echo "Set cowextsize and check flag"
+"$XFS_IO_PROG" -f -c "cowextsize 1048576" "$testdir/file3" | _filter_scratch
+_scratch_remount
+test $("$XFS_IO_PROG" -c "stat" "$testdir/file3" | grep 'fsxattr.xflags' | awk '{print $4}' | grep -c 'C') -eq 1 || echo "file3 cowextsz flag not set"
+test $(fn cowextsize "$testdir/file3") -eq 1048576 || echo "file3 cowextsize not set"
+"$XFS_IO_PROG" -f -c "cowextsize 0" "$testdir/file3" | _filter_scratch
+_scratch_remount
+test $(fn cowextsize "$testdir/file3") -eq 0 || echo "file3 cowextsize not set"
+test $("$XFS_IO_PROG" -c "stat" "$testdir/file3" | grep 'fsxattr.xflags' | awk '{print $4}' | grep -c 'C') -eq 0 || echo "file3 cowextsz flag not set"
+
+echo "Check for damage"
+umount "$SCRATCH_MNT"
+
+# success, all done
+status=0
+exit
diff --git a/tests/xfs/207.out b/tests/xfs/207.out
new file mode 100644
index 0000000..6fc0105
--- /dev/null
+++ b/tests/xfs/207.out
@@ -0,0 +1,10 @@ 
+QA output created by 207
+Format and mount
+Create the original files
+Set extsz and cowextsz on zero byte file
+Set extsz and cowextsz on 1Mbyte file
+xfs_io: XFS_IOC_FSSETXATTR SCRATCH_MNT/test-207/file2: Invalid argument
+Check extsz and cowextsz settings on zero byte file
+Check extsz and cowextsz settings on 1Mbyte file
+Set cowextsize and check flag
+Check for damage
diff --git a/tests/xfs/208 b/tests/xfs/208
new file mode 100755
index 0000000..6b470f4
--- /dev/null
+++ b/tests/xfs/208
@@ -0,0 +1,154 @@ 
+#! /bin/bash
+# FS QA Test No. 208
+#
+# Ensure that the effective cow extent allocation size hint is the maximum of
+# the cowextsize and extsize inode fields.
+# - Create two reflinked files.  Set extsz hint on second file to $blocksize
+#   and cowextsize hint to 1MB.
+# - Buffered write to random offsets to scatter CoW reservations.
+# - Rewrite the whole file to use up reservations.
+# - Check the number of extents.
+# - Repeat, but with extsz = 1MB and cowextsz = $blocksize.
+#
+#-----------------------------------------------------------------------
+# Copyright (c) 2016, 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
+_supported_fs xfs
+_require_scratch_reflink
+_require_cp_reflink
+_require_fiemap
+_require_xfs_io_command "cowextsize"
+
+rm -f "$seqres.full"
+
+echo "Format and mount"
+_scratch_mkfs > "$seqres.full" 2>&1
+_scratch_mount >> "$seqres.full" 2>&1
+
+testdir="$SCRATCH_MNT/test-$seq"
+rm -rf $testdir
+mkdir $testdir
+
+blksz=65536
+nr=128
+bsz=16
+
+free_blocks=$(stat -f -c '%a' "$testdir")
+real_blksz=$(stat -f -c '%S' "$testdir")
+space_needed=$(((blksz * nr * 3) * 5 / 4))
+space_avail=$((free_blocks * real_blksz))
+internal_blks=$((blksz * nr / real_blksz))
+test $space_needed -gt $space_avail && _notrun "Not enough space. $space_avail < $space_needed"
+
+echo "Create the original files"
+"$XFS_IO_PROG" -f -c "pwrite -S 0x61 -b $((blksz * bsz)) 0 $((blksz * nr + 1))" "$testdir/file1" >> "$seqres.full"
+
+"$XFS_IO_PROG" -f -c "extsize $real_blksz" "$testdir/file2"
+"$XFS_IO_PROG" -f -c "cowextsize $((blksz * bsz))" "$testdir/file2"
+_cp_reflink "$testdir/file1" "$testdir/file2" >> "$seqres.full"
+_cp_reflink "$testdir/file1" "$testdir/file2" >> "$seqres.full"
+
+"$XFS_IO_PROG" -f -c "extsize $((blksz * bsz))" "$testdir/file3"
+"$XFS_IO_PROG" -f -c "cowextsize $real_blksz" "$testdir/file3"
+_cp_reflink "$testdir/file1" "$testdir/file3" >> "$seqres.full"
+_scratch_remount
+
+echo "Check extsize and cowextsize"
+expected="[$real_blksz] $testdir/file2"
+test "$expected" = "$("$XFS_IO_PROG" -f -c "extsize" "$testdir/file2")" || echo "file2 extsize setting failed"
+expected="[$((blksz * bsz))] $testdir/file2"
+test "$expected" = "$("$XFS_IO_PROG" -f -c "cowextsize" "$testdir/file2")" || echo "file2 cowextsize setting failed"
+
+expected="[$real_blksz] $testdir/file3"
+test "$expected" = "$("$XFS_IO_PROG" -f -c "cowextsize" "$testdir/file3")" || echo "file3 extsize setting failed"
+expected="[$((blksz * bsz))] $testdir/file3"
+test "$expected" = "$("$XFS_IO_PROG" -f -c "extsize" "$testdir/file3")" || echo "file3 cowextsize setting failed"
+
+echo "Compare files"
+md5sum "$testdir/file1" | _filter_scratch
+md5sum "$testdir/file2" | _filter_scratch
+md5sum "$testdir/file3" | _filter_scratch
+
+echo "CoW and unmount"
+echo "extsize" >> "$seqres.full"
+"$XFS_IO_PROG" -f -c "extsize" "$testdir/file2" >> "$seqres.full"
+echo "cowextsize" >> "$seqres.full"
+"$XFS_IO_PROG" -f -c "cowextsize" "$testdir/file2" >> "$seqres.full"
+
+"$XFS_IO_PROG" -f -c "pwrite -R -S 0x63 -b $real_blksz 0 $((blksz * nr))" -c "fdatasync" "$testdir/file2" >> "$seqres.full"
+"$XFS_IO_PROG" -f -c "pwrite -S 0x63 -b $real_blksz 0 $((blksz * nr + 1))" -c "fdatasync" "$testdir/file2" >> "$seqres.full"
+
+echo "extsize" >> "$seqres.full"
+"$XFS_IO_PROG" -f -c "extsize" "$testdir/file3" >> "$seqres.full"
+echo "cowextsize" >> "$seqres.full"
+"$XFS_IO_PROG" -f -c "cowextsize" "$testdir/file3" >> "$seqres.full"
+
+"$XFS_IO_PROG" -f -c "pwrite -R -S 0x63 -b $real_blksz 0 $((blksz * nr))" -c "fdatasync" "$testdir/file3" >> "$seqres.full"
+"$XFS_IO_PROG" -f -c "pwrite -S 0x63 -b $real_blksz 0 $((blksz * nr + 1))" -c "fdatasync" "$testdir/file3" >> "$seqres.full"
+_scratch_remount
+
+echo "Compare files"
+md5sum "$testdir/file1" | _filter_scratch
+md5sum "$testdir/file2" | _filter_scratch
+md5sum "$testdir/file3" | _filter_scratch
+
+echo "Check extent counts"
+old_extents=$(_count_extents "$testdir/file1")
+new_extents=$(_count_extents "$testdir/file2")
+
+echo "old extents: $old_extents" >> "$seqres.full"
+echo "new extents: $new_extents" >> "$seqres.full"
+echo "maximum extents: $internal_blks" >> "$seqres.full"
+test $new_extents -lt $((internal_blks / 20)) || test $new_extents -lt 15 \
+	|| echo "file2 badly fragmented"
+
+new_extents=$(_count_extents "$testdir/file3")
+
+echo "old extents: $old_extents" >> "$seqres.full"
+echo "new extents: $new_extents" >> "$seqres.full"
+echo "maximum extents: $internal_blks" >> "$seqres.full"
+test $new_extents -lt $((internal_blks / 20)) || test $new_extents -lt 15 \
+	|| echo "file3 badly fragmented"
+
+echo "Check for damage"
+umount "$SCRATCH_MNT"
+
+# success, all done
+status=0
+exit
diff --git a/tests/xfs/208.out b/tests/xfs/208.out
new file mode 100644
index 0000000..0a31249
--- /dev/null
+++ b/tests/xfs/208.out
@@ -0,0 +1,15 @@ 
+QA output created by 208
+Format and mount
+Create the original files
+Check extsize and cowextsize
+Compare files
+2909feb63a37b0e95fe5cfb7f274f7b1  SCRATCH_MNT/test-208/file1
+2909feb63a37b0e95fe5cfb7f274f7b1  SCRATCH_MNT/test-208/file2
+2909feb63a37b0e95fe5cfb7f274f7b1  SCRATCH_MNT/test-208/file3
+CoW and unmount
+Compare files
+2909feb63a37b0e95fe5cfb7f274f7b1  SCRATCH_MNT/test-208/file1
+d41f6527bc8320364e12ea7076140b8b  SCRATCH_MNT/test-208/file2
+d41f6527bc8320364e12ea7076140b8b  SCRATCH_MNT/test-208/file3
+Check extent counts
+Check for damage
diff --git a/tests/xfs/209 b/tests/xfs/209
new file mode 100755
index 0000000..ef47e74
--- /dev/null
+++ b/tests/xfs/209
@@ -0,0 +1,88 @@ 
+#! /bin/bash
+# FS QA Test No. 209
+#
+# Make sure setting cowextsz on a directory propagates it to subfiles.
+#
+#-----------------------------------------------------------------------
+# Copyright (c) 2016, 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
+_supported_fs xfs
+_require_scratch_reflink
+_require_cp_reflink
+_require_fiemap
+_require_xfs_io_command "cowextsize"
+
+rm -f "$seqres.full"
+
+echo "Format and mount"
+_scratch_mkfs > "$seqres.full" 2>&1
+_scratch_mount >> "$seqres.full" 2>&1
+
+testdir="$SCRATCH_MNT/test-$seq"
+rm -rf $testdir
+mkdir $testdir
+
+echo "Set extsz and cowextsz on directory"
+"$XFS_IO_PROG" -c "cowextsize 1048576" "$testdir" >> "$seqres.full"
+
+echo "Create a fake tree structure"
+seq 1 32 | while read nr; do
+	mkdir "$testdir/dir-$nr"
+	seq 1 8 | while read nnr; do
+		touch "$testdir/dir-$nr/file-$nnr"
+	done
+done
+_scratch_remount
+
+echo "Check cowextsize settings"
+seq 1 32 | while read nr; do
+	seq 1 8 | while read nnr; do
+		file="$testdir/dir-$nr/file-$nnr"
+		expected="[1048576] $file"
+		actual="$("$XFS_IO_PROG" -c "cowextsize" "$file")"
+		test "$expected" = "$actual" || echo "cowextsize didn't propagate to $file"
+	done
+done
+
+echo "Check for damage"
+umount "$SCRATCH_MNT"
+
+# success, all done
+status=0
+exit
diff --git a/tests/xfs/209.out b/tests/xfs/209.out
new file mode 100644
index 0000000..ffb0609
--- /dev/null
+++ b/tests/xfs/209.out
@@ -0,0 +1,6 @@ 
+QA output created by 209
+Format and mount
+Set extsz and cowextsz on directory
+Create a fake tree structure
+Check cowextsize settings
+Check for damage
diff --git a/tests/xfs/210 b/tests/xfs/210
new file mode 100755
index 0000000..95e73b2
--- /dev/null
+++ b/tests/xfs/210
@@ -0,0 +1,125 @@ 
+#! /bin/bash
+# FS QA Test No. 210
+#
+# During reflink, XFS should carry the cowextsz setting to the destination file
+# if the destination file size is less than the size of the source file, the
+# length is the size of the source file, both offsets are zero, and the
+# destination does not already have a cowextsz setting.  It should not do so
+# otherwise.
+#
+#-----------------------------------------------------------------------
+# Copyright (c) 2016, 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
+_supported_fs xfs
+_require_scratch_reflink
+_require_cp_reflink
+_require_fiemap
+_require_xfs_io_command "cowextsize"
+
+rm -f "$seqres.full"
+
+echo "Format and mount"
+_scratch_mkfs > "$seqres.full" 2>&1
+_scratch_mount >> "$seqres.full" 2>&1
+
+testdir="$SCRATCH_MNT/test-$seq"
+rm -rf $testdir
+mkdir $testdir
+
+echo "Create initial file"
+"$XFS_IO_PROG" -f -c "pwrite -S 0x61 0 131072" "$testdir/file1" >> "$seqres.full"
+"$XFS_IO_PROG" -c "cowextsize 1048576" "$testdir/file1" >> "$seqres.full"
+"$XFS_IO_PROG" -f -c "pwrite -S 0x61 0 1" "$testdir/file4" >> "$seqres.full"
+"$XFS_IO_PROG" -f -c "pwrite -S 0x61 0 262144" "$testdir/file7" >> "$seqres.full"
+"$XFS_IO_PROG" -f -c "pwrite -S 0x61 0 262144" "$testdir/file9" >> "$seqres.full"
+"$XFS_IO_PROG" -f -c "pwrite -S 0x61 0 262144" "$testdir/file10" >> "$seqres.full"
+
+echo "Reflink to an empty file"
+_reflink_range "$testdir/file1" 0 "$testdir/file2" 0 0 >> "$seqres.full"
+
+echo "Reflink to an empty file that already has cowextsz"
+"$XFS_IO_PROG" -f -c "cowextsize 524288" "$testdir/file3" >> "$seqres.full"
+_reflink_range "$testdir/file1" 0 "$testdir/file3" 0 0 >> "$seqres.full"
+
+echo "Reflink to a small file"
+_reflink_range "$testdir/file1" 0 "$testdir/file4" 0 0 >> "$seqres.full"
+
+echo "Reflink to a nonzero offset"
+_reflink_range "$testdir/file1" 0 "$testdir/file5" 65536 0 >> "$seqres.full"
+
+echo "Reflink from a nonzero offset"
+_reflink_range "$testdir/file1" 65536 "$testdir/file6" 0 0 >> "$seqres.full"
+
+echo "Reflink to a large file"
+_reflink_range "$testdir/file1" 0 "$testdir/file7" 0 0 >> "$seqres.full"
+
+echo "Reflink less than the whole source file"
+_reflink_range "$testdir/file1" 0 "$testdir/file8" 0 65536 >> "$seqres.full"
+
+echo "cp reflink to a large file"
+_cp_reflink "$testdir/file1" "$testdir/file9" >> "$seqres.full"
+
+echo "cp reflink to a large file with cowextsize"
+"$XFS_IO_PROG" -f -c "cowextsize 524288" "$testdir/file10" >> "$seqres.full"
+_cp_reflink "$testdir/file1" "$testdir/file10" >> "$seqres.full"
+
+fn() {
+	"$XFS_IO_PROG" -c "cowextsize" "$1" | sed -e 's/.\([0-9]*\).*$/\1/g'
+}
+echo "Check cowextsz"
+test "$(fn "$testdir/file1")" -eq 1048576 || echo "file1 cowextsize wrong"
+test "$(fn "$testdir/file2")" -eq 1048576 || echo "file2 cowextsize wrong"
+test "$(fn "$testdir/file3")" -eq 524288 || echo "file3 cowextsize wrong"
+test "$(fn "$testdir/file4")" -eq 1048576 || echo "file4 cowextsize wrong"
+test "$(fn "$testdir/file5")" -eq 0 || echo "file5 cowextsize wrong"
+test "$(fn "$testdir/file6")" -eq 0 || echo "file6 cowextsize wrong"
+test "$(fn "$testdir/file7")" -eq 0 || echo "file7 cowextsize wrong"
+test "$(fn "$testdir/file8")" -eq 0 || echo "file8 cowextsize wrong"
+test "$(fn "$testdir/file9")" -eq 1048576 || echo "file9 cowextsize wrong"
+test "$(fn "$testdir/file10")" -eq 524288 || echo "file10 cowextsize wrong"
+for i in $(seq 1 10); do
+	echo "$testdir/file$i $(fn "$testdir/file$i")" >> "$seqres.full"
+done
+
+echo "Check for damage"
+umount "$SCRATCH_MNT"
+
+# success, all done
+status=0
+exit
diff --git a/tests/xfs/210.out b/tests/xfs/210.out
new file mode 100644
index 0000000..ca5086b
--- /dev/null
+++ b/tests/xfs/210.out
@@ -0,0 +1,14 @@ 
+QA output created by 210
+Format and mount
+Create initial file
+Reflink to an empty file
+Reflink to an empty file that already has cowextsz
+Reflink to a small file
+Reflink to a nonzero offset
+Reflink from a nonzero offset
+Reflink to a large file
+Reflink less than the whole source file
+cp reflink to a large file
+cp reflink to a large file with cowextsize
+Check cowextsz
+Check for damage
diff --git a/tests/xfs/211 b/tests/xfs/211
new file mode 100755
index 0000000..abc9a07
--- /dev/null
+++ b/tests/xfs/211
@@ -0,0 +1,111 @@ 
+#! /bin/bash
+# FS QA Test No. 211
+#
+# Test fragmentation in a big file after a lot of random CoW:
+# - Create two reflinked files.  Set extsz hint on second file.
+# - Directio write to random offsets to scatter CoW reservations.
+# - Rewrite the whole file to use up reservations.
+# - Check the number of extents.
+#
+#-----------------------------------------------------------------------
+# Copyright (c) 2016, 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
+_supported_fs xfs
+_require_scratch_reflink
+_require_cp_reflink
+_require_fiemap
+_require_xfs_io_command "cowextsize"
+
+rm -f "$seqres.full"
+
+echo "Format and mount"
+_scratch_mkfs > "$seqres.full" 2>&1
+_scratch_mount >> "$seqres.full" 2>&1
+
+testdir="$SCRATCH_MNT/test-$seq"
+rm -rf $testdir
+mkdir $testdir
+
+blksz=65536
+nr=50000
+bsz=16
+
+free_blocks=$(stat -f -c '%a' "$testdir")
+real_blksz=$(stat -f -c '%S' "$testdir")
+space_needed=$(((blksz * nr * 2) * 5 / 4))
+space_avail=$((free_blocks * real_blksz))
+internal_blks=$((blksz * nr / real_blksz))
+test $space_needed -gt $space_avail && _notrun "Not enough space. $space_avail < $space_needed"
+
+echo "Create the original files"
+"$XFS_IO_PROG" -f -c "pwrite -S 0x61 -b $((blksz * bsz)) 0 $((blksz * nr + 1))" "$testdir/file1" >> "$seqres.full"
+"$XFS_IO_PROG" -f -c "cowextsize $((blksz * bsz))" "$testdir/file2"
+_cp_reflink "$testdir/file1" "$testdir/file2" >> "$seqres.full"
+_scratch_remount
+
+echo "Compare files"
+md5sum "$testdir/file1" | _filter_scratch
+md5sum "$testdir/file2" | _filter_scratch
+
+echo "CoW and unmount"
+"$XFS_IO_PROG" -f -c "cowextsize" "$testdir/file2" >> "$seqres.full"
+"$XFS_IO_PROG" -d -f -c "pwrite -R -S 0x63 -b $real_blksz 0 $((blksz * nr + 1))" "$testdir/file2" >> "$seqres.full"
+"$XFS_IO_PROG" -d -f -c "pwrite -S 0x63 -b 8388608 0 $((blksz * nr))" "$testdir/file2" >> "$seqres.full"
+_scratch_remount
+
+echo "Compare files"
+md5sum "$testdir/file1" | _filter_scratch
+md5sum "$testdir/file2" | _filter_scratch
+
+echo "Check extent counts"
+old_extents=$(_count_extents "$testdir/file1")
+new_extents=$(_count_extents "$testdir/file2")
+
+echo "old extents: $old_extents" >> "$seqres.full"
+echo "new extents: $new_extents" >> "$seqres.full"
+echo "maximum extents: $internal_blks" >> "$seqres.full"
+test $new_extents -lt $((internal_blks / 20)) || test $new_extents -lt 15 \
+	|| _fail "file2 badly fragmented"
+
+echo "Check for damage"
+umount "$SCRATCH_MNT"
+
+# success, all done
+status=0
+exit
diff --git a/tests/xfs/211.out b/tests/xfs/211.out
new file mode 100644
index 0000000..3d912a8
--- /dev/null
+++ b/tests/xfs/211.out
@@ -0,0 +1,12 @@ 
+QA output created by 211
+Format and mount
+Create the original files
+Compare files
+07415406aea963ab8e005f1d3744fded  SCRATCH_MNT/test-211/file1
+07415406aea963ab8e005f1d3744fded  SCRATCH_MNT/test-211/file2
+CoW and unmount
+Compare files
+07415406aea963ab8e005f1d3744fded  SCRATCH_MNT/test-211/file1
+7d8ab127adfc1f745a7d1cd5e44d10d8  SCRATCH_MNT/test-211/file2
+Check extent counts
+Check for damage
diff --git a/tests/xfs/group b/tests/xfs/group
index abf1d33..119e1fd 100644
--- a/tests/xfs/group
+++ b/tests/xfs/group
@@ -177,8 +177,11 @@ 
 177 dmapi
 178 mkfs other auto
 179 auto quick clone
+180 auto quick clone
 181 log auto quick
+182 auto quick clone
 183 rw other auto quick
+184 auto quick clone
 185 dmapi
 186 attr auto quick
 187 attr auto quick
@@ -186,16 +189,26 @@ 
 189 mount auto quick
 190 rw auto quick
 191 nfs4acl auto
+192 auto quick clone
+193 auto quick clone
 194 rw auto
 195 ioctl dump auto quick
 196 quota auto quick
 197 dir auto quick
+198 auto quick clone
 199 mount auto quick
+200 auto quick clone
 201 metadata auto quick
 202 repair auto quick
 203 ioctl auto
+204 auto quick clone
 205 metadata rw auto
 206 growfs auto quick
+207 auto quick clone
+208 auto quick clone
+209 auto quick clone
+210 auto quick clone
+211 clone_stress
 216 log metadata auto quick
 217 log metadata auto
 220 auto quota quick