diff --git a/.github/workflows/xfstests.yml b/.github/workflows/xfstests.yml
index 57bec3c0d..532ff0b15 100644
--- a/.github/workflows/xfstests.yml
+++ b/.github/workflows/xfstests.yml
@@ -52,3 +52,24 @@ jobs:
       run: |
         cd $GITHUB_WORKSPACE
         sudo ./tests/scripts/xfstests_overlay.sh
+
+  unionmount_testsuite_on_overlayfs:
+    runs-on: ubuntu-latest
+    steps:
+    - name: Checkout
+      uses: actions/checkout@v4
+    - name: Install Rust
+      uses: actions-rs/toolchain@v1
+      with:
+        profile: minimal
+        toolchain: stable
+        override: true
+    - name: Build overlay binary
+      run: |
+        cd tests/overlay
+        cargo build --release
+        sudo install -t /usr/sbin/ -m 700 ./target/release/overlay
+    - name: Setup and run unionmount testsuite
+      run: |
+        cd $GITHUB_WORKSPACE
+        sudo ./tests/scripts/unionmount_test_overlay.sh
\ No newline at end of file
diff --git a/tests/scripts/unionmount_test_overlay.sh b/tests/scripts/unionmount_test_overlay.sh
new file mode 100755
index 000000000..6268719a4
--- /dev/null
+++ b/tests/scripts/unionmount_test_overlay.sh
@@ -0,0 +1,106 @@
+#!/bin/bash
+
+# create fuse overlay mount script.
+# /tmp/testoverlay must exists.
+sudo cat >/usr/sbin/mount.fuse.testoverlay  <<EOF
+#!/bin/bash
+
+ulimit -n 1048576
+exec /usr/sbin/overlay \$@ -l info 1>>/tmp/testoverlay.log 2>&1 &
+sleep 1
+EOF
+sudo chmod +x /usr/sbin/mount.fuse.testoverlay
+
+
+# clone xfstests and install.
+cd /tmp/
+git clone -b ci-fuse-backend-rs https://github.com/WeiZhang555/unionmount-testsuite.git
+cd unionmount-testsuite
+
+echo "====> Start to run unionmount-testsuite."
+
+mkdir -p /tmp/unionmount/
+touch /tmp/summary
+success=0
+fail=0
+
+for testcase in dir-open-dir \
+dir-open \
+dir-sym1-open \
+dir-sym1-weird-open \
+dir-sym2-open \
+dir-sym2-weird-open \
+dir-weird-open \
+hard-link-dir \
+hard-link \
+hard-link-sym \
+impermissible \
+mkdir \
+noent-creat-excl \
+noent-creat-excl-trunc \
+noent-creat \
+noent-creat-trunc \
+noent-plain \
+noent-trunc \
+open-creat-excl \
+open-creat-excl-trunc \
+open-creat \
+open-creat-trunc \
+open-plain \
+open-trunc \
+readlink \
+rename-exdev \
+rmdir \
+rmtree-new \
+rmtree \
+sym1-creat-excl \
+sym1-creat \
+sym1-plain \
+sym1-trunc \
+sym2-creat-excl \
+sym2-creat \
+sym2-plain \
+sym2-trunc \
+symx-creat-excl \
+symx-creat \
+symx-creat-trunc \
+symx-plain \
+symx-trunc \
+truncate \
+unlink
+# === Some test cases are not supported by unionmount currently ===
+# dir-weird-open-dir
+# rename-dir
+# rename-empty-dir
+# rename-file
+# rename-hard-link
+# rename-mass-2
+# rename-mass-3
+# rename-mass-4
+# rename-mass-5
+# rename-mass-dir
+# rename-mass
+# rename-mass-sym
+# rename-move-dir
+# rename-new-dir
+# rename-new-pop-dir
+# rename-pop-dir
+do
+	UNIONMOUNT_BASEDIR=/tmp/unionmount sudo -E ./run --ov --fuse=testoverlay --xdev $testcase
+	if [ $? -eq 0 ]
+	then
+		echo "===== SUCCESS: " $testcase >> /tmp/summary
+		let success+=1
+	else
+		echo ">>>>>>>> FAIL: " $testcase >> /tmp/summary
+		let fail+=1
+	fi
+done;
+
+cat /tmp/summary && rm /tmp/summary
+echo "Total: success: $success, fail: $fail"
+
+if [ $fail -gt 0 ]
+then
+    exit 1
+fi