diff --git a/tests/overlay/110 b/tests/overlay/110
new file mode 100755
index 00000000..8d34f23e
--- /dev/null
+++ b/tests/overlay/110
@@ -0,0 +1,39 @@
+#! /bin/bash
+# SPDX-License-Identifier: GPL-2.0
+# Copyright (C) 2020 CTERA Networks. All Rights Reserved.
+#
+# FS QA Test 110
+#
+# Run unionmount testsuite on a nested overlay filesystem
+# with single lower overlay layer, whose layers are
+# on same fs
+#
+seq=`basename $0`
+seqres=$RESULT_DIR/$seq
+echo "QA output created by $seq"
+
+here=`pwd`
+tmp=/tmp/$$
+status=1	# failure is the default!
+trap "_unionmount_testsuite_cleanup; exit \$status" 0 1 2 3 15
+
+# get standard environment, filters and checks
+. ./common/rc
+. ./common/filter
+
+# remove previous $seqres.full before test
+rm -f $seqres.full
+
+# real QA test starts here
+
+_supported_fs overlay
+_supported_os Linux
+_require_scratch
+_require_unionmount_testsuite
+
+_unionmount_testsuite_run --ovov --samefs --verify
+
+# success, all done
+echo "Silence is golden"
+status=0
+exit
diff --git a/tests/overlay/110.out b/tests/overlay/110.out
new file mode 100644
index 00000000..4284b8b0
--- /dev/null
+++ b/tests/overlay/110.out
@@ -0,0 +1,2 @@
+QA output created by 110
+Silence is golden
diff --git a/tests/overlay/111 b/tests/overlay/111
new file mode 100755
index 00000000..b99f94da
--- /dev/null
+++ b/tests/overlay/111
@@ -0,0 +1,40 @@
+#! /bin/bash
+# SPDX-License-Identifier: GPL-2.0
+# Copyright (C) 2020 CTERA Networks. All Rights Reserved.
+#
+# FS QA Test 111
+#
+# Run unionmount testsuite on a nested overlay filesystem
+# with single lower overlay layer, whose layers are
+# on same fs
+# with xino enabled (xino overflow not expected)
+#
+seq=`basename $0`
+seqres=$RESULT_DIR/$seq
+echo "QA output created by $seq"
+
+here=`pwd`
+tmp=/tmp/$$
+status=1	# failure is the default!
+trap "_unionmount_testsuite_cleanup; exit \$status" 0 1 2 3 15
+
+# get standard environment, filters and checks
+. ./common/rc
+. ./common/filter
+
+# remove previous $seqres.full before test
+rm -f $seqres.full
+
+# real QA test starts here
+
+_supported_fs overlay
+_supported_os Linux
+_require_scratch
+_require_unionmount_testsuite
+
+_unionmount_testsuite_run --ovov --samefs --xino --verify
+
+# success, all done
+echo "Silence is golden"
+status=0
+exit
diff --git a/tests/overlay/111.out b/tests/overlay/111.out
new file mode 100644
index 00000000..fedcd590
--- /dev/null
+++ b/tests/overlay/111.out
@@ -0,0 +1,2 @@
+QA output created by 111
+Silence is golden
diff --git a/tests/overlay/112 b/tests/overlay/112
new file mode 100755
index 00000000..5e8f980b
--- /dev/null
+++ b/tests/overlay/112
@@ -0,0 +1,40 @@
+#! /bin/bash
+# SPDX-License-Identifier: GPL-2.0
+# Copyright (C) 2020 CTERA Networks. All Rights Reserved.
+#
+# FS QA Test 112
+#
+# Run unionmount testsuite on a nested overlay filesystem
+# with single lower overlay layer, whose layers are
+# not on same fs
+#
+seq=`basename $0`
+seqres=$RESULT_DIR/$seq
+echo "QA output created by $seq"
+
+here=`pwd`
+tmp=/tmp/$$
+status=1	# failure is the default!
+trap "_unionmount_testsuite_cleanup; exit \$status" 0 1 2 3 15
+
+# get standard environment, filters and checks
+. ./common/rc
+. ./common/filter
+
+# remove previous $seqres.full before test
+rm -f $seqres.full
+
+# real QA test starts here
+
+_supported_fs overlay
+_supported_os Linux
+_require_test
+_require_scratch
+_require_unionmount_testsuite
+
+_unionmount_testsuite_run --ovov --verify
+
+# success, all done
+echo "Silence is golden"
+status=0
+exit
diff --git a/tests/overlay/112.out b/tests/overlay/112.out
new file mode 100644
index 00000000..0f75273b
--- /dev/null
+++ b/tests/overlay/112.out
@@ -0,0 +1,2 @@
+QA output created by 112
+Silence is golden
diff --git a/tests/overlay/113 b/tests/overlay/113
new file mode 100755
index 00000000..b865f364
--- /dev/null
+++ b/tests/overlay/113
@@ -0,0 +1,41 @@
+#! /bin/bash
+# SPDX-License-Identifier: GPL-2.0
+# Copyright (C) 2020 CTERA Networks. All Rights Reserved.
+#
+# FS QA Test 113
+#
+# Run unionmount testsuite on a nested overlay filesystem
+# with single lower overlay layer, whose layers are
+# not on same fs
+# with xino enabled (expected xino overflows)
+#
+seq=`basename $0`
+seqres=$RESULT_DIR/$seq
+echo "QA output created by $seq"
+
+here=`pwd`
+tmp=/tmp/$$
+status=1	# failure is the default!
+trap "_unionmount_testsuite_cleanup; exit \$status" 0 1 2 3 15
+
+# get standard environment, filters and checks
+. ./common/rc
+. ./common/filter
+
+# remove previous $seqres.full before test
+rm -f $seqres.full
+
+# real QA test starts here
+
+_supported_fs overlay
+_supported_os Linux
+_require_test
+_require_scratch
+_require_unionmount_testsuite
+
+_unionmount_testsuite_run --ovov --xino --verify
+
+# success, all done
+echo "Silence is golden"
+status=0
+exit
diff --git a/tests/overlay/113.out b/tests/overlay/113.out
new file mode 100644
index 00000000..5cdea7de
--- /dev/null
+++ b/tests/overlay/113.out
@@ -0,0 +1,2 @@
+QA output created by 113
+Silence is golden
diff --git a/tests/overlay/114 b/tests/overlay/114
new file mode 100755
index 00000000..fc783f57
--- /dev/null
+++ b/tests/overlay/114
@@ -0,0 +1,39 @@
+#! /bin/bash
+# SPDX-License-Identifier: GPL-2.0
+# Copyright (C) 2020 CTERA Networks. All Rights Reserved.
+#
+# FS QA Test 114
+#
+# Run unionmount testsuite on a nested overlay filesystem
+# with multi lower layers, lowermost is an overlay layer,
+# whose layers are on same fs
+#
+seq=`basename $0`
+seqres=$RESULT_DIR/$seq
+echo "QA output created by $seq"
+
+here=`pwd`
+tmp=/tmp/$$
+status=1	# failure is the default!
+trap "_unionmount_testsuite_cleanup; exit \$status" 0 1 2 3 15
+
+# get standard environment, filters and checks
+. ./common/rc
+. ./common/filter
+
+# remove previous $seqres.full before test
+rm -f $seqres.full
+
+# real QA test starts here
+
+_supported_fs overlay
+_supported_os Linux
+_require_scratch
+_require_unionmount_testsuite
+
+_unionmount_testsuite_run --ovov=10 --samefs --verify
+
+# success, all done
+echo "Silence is golden"
+status=0
+exit
diff --git a/tests/overlay/114.out b/tests/overlay/114.out
new file mode 100644
index 00000000..a2aa4a21
--- /dev/null
+++ b/tests/overlay/114.out
@@ -0,0 +1,2 @@
+QA output created by 114
+Silence is golden
diff --git a/tests/overlay/115 b/tests/overlay/115
new file mode 100755
index 00000000..b82128d6
--- /dev/null
+++ b/tests/overlay/115
@@ -0,0 +1,40 @@
+#! /bin/bash
+# SPDX-License-Identifier: GPL-2.0
+# Copyright (C) 2020 CTERA Networks. All Rights Reserved.
+#
+# FS QA Test 115
+#
+# Run unionmount testsuite on a nested overlay filesystem
+# with multi lower layers, lowermost is an overlay layer,
+# whose layers are on same fs
+# with xino enabled (xino overflow not expected)
+#
+seq=`basename $0`
+seqres=$RESULT_DIR/$seq
+echo "QA output created by $seq"
+
+here=`pwd`
+tmp=/tmp/$$
+status=1	# failure is the default!
+trap "_unionmount_testsuite_cleanup; exit \$status" 0 1 2 3 15
+
+# get standard environment, filters and checks
+. ./common/rc
+. ./common/filter
+
+# remove previous $seqres.full before test
+rm -f $seqres.full
+
+# real QA test starts here
+
+_supported_fs overlay
+_supported_os Linux
+_require_scratch
+_require_unionmount_testsuite
+
+_unionmount_testsuite_run --ovov=10 --samefs --xino --verify
+
+# success, all done
+echo "Silence is golden"
+status=0
+exit
diff --git a/tests/overlay/115.out b/tests/overlay/115.out
new file mode 100644
index 00000000..d9dd136f
--- /dev/null
+++ b/tests/overlay/115.out
@@ -0,0 +1,2 @@
+QA output created by 115
+Silence is golden
diff --git a/tests/overlay/116 b/tests/overlay/116
new file mode 100755
index 00000000..1575bece
--- /dev/null
+++ b/tests/overlay/116
@@ -0,0 +1,40 @@
+#! /bin/bash
+# SPDX-License-Identifier: GPL-2.0
+# Copyright (C) 2020 CTERA Networks. All Rights Reserved.
+#
+# FS QA Test 116
+#
+# Run unionmount testsuite on a nested overlay filesystem
+# with multi lower layers, lowermost is an overlay layer,
+# whose layers are not on same fs
+#
+seq=`basename $0`
+seqres=$RESULT_DIR/$seq
+echo "QA output created by $seq"
+
+here=`pwd`
+tmp=/tmp/$$
+status=1	# failure is the default!
+trap "_unionmount_testsuite_cleanup; exit \$status" 0 1 2 3 15
+
+# get standard environment, filters and checks
+. ./common/rc
+. ./common/filter
+
+# remove previous $seqres.full before test
+rm -f $seqres.full
+
+# real QA test starts here
+
+_supported_fs overlay
+_supported_os Linux
+_require_test
+_require_scratch
+_require_unionmount_testsuite
+
+_unionmount_testsuite_run --ovov=10 --verify
+
+# success, all done
+echo "Silence is golden"
+status=0
+exit
diff --git a/tests/overlay/116.out b/tests/overlay/116.out
new file mode 100644
index 00000000..a2013bc3
--- /dev/null
+++ b/tests/overlay/116.out
@@ -0,0 +1,2 @@
+QA output created by 116
+Silence is golden
diff --git a/tests/overlay/117 b/tests/overlay/117
new file mode 100755
index 00000000..819edc9b
--- /dev/null
+++ b/tests/overlay/117
@@ -0,0 +1,41 @@
+#! /bin/bash
+# SPDX-License-Identifier: GPL-2.0
+# Copyright (C) 2020 CTERA Networks. All Rights Reserved.
+#
+# FS QA Test 117
+#
+# Run unionmount testsuite on a nested overlay filesystem
+# with multi lower layers, lowermost is an overlay layer,
+# whose layers are not on same fs
+# with xino enabled (expected xino overflows)
+#
+seq=`basename $0`
+seqres=$RESULT_DIR/$seq
+echo "QA output created by $seq"
+
+here=`pwd`
+tmp=/tmp/$$
+status=1	# failure is the default!
+trap "_unionmount_testsuite_cleanup; exit \$status" 0 1 2 3 15
+
+# get standard environment, filters and checks
+. ./common/rc
+. ./common/filter
+
+# remove previous $seqres.full before test
+rm -f $seqres.full
+
+# real QA test starts here
+
+_supported_fs overlay
+_supported_os Linux
+_require_test
+_require_scratch
+_require_unionmount_testsuite
+
+_unionmount_testsuite_run --ovov=10 --xino --verify
+
+# success, all done
+echo "Silence is golden"
+status=0
+exit
diff --git a/tests/overlay/117.out b/tests/overlay/117.out
new file mode 100644
index 00000000..986c5152
--- /dev/null
+++ b/tests/overlay/117.out
@@ -0,0 +1,2 @@
+QA output created by 117
+Silence is golden
diff --git a/tests/overlay/group b/tests/overlay/group
index 079ff0af..047ea046 100644
--- a/tests/overlay/group
+++ b/tests/overlay/group
@@ -87,3 +87,11 @@
 107 auto union rotate nonsamefs xino
 108 auto union rotate nonsamefs
 109 auto union rotate nonsamefs xino
+110 auto quick union nested samefs
+111 auto quick union nested samefs xino
+112 auto quick union nested nonsamefs
+113 auto quick union nested nonsamefs xino
+114 auto union rotate nested samefs
+115 auto union rotate nested samefs xino
+116 auto union rotate nested nonsamefs
+117 auto union rotate nested nonsamefs xino
