diff --git a/src/overlay/Cargo.lock b/src/overlay/Cargo.lock
index d39139eff42b..f091ad441b36 100644
--- a/src/overlay/Cargo.lock
+++ b/src/overlay/Cargo.lock
@@ -209,6 +209,7 @@ version = "0.1.0"
 dependencies = [
  "base64",
  "clap",
+ "nix",
  "tempfile",
 ]
 
@@ -224,6 +225,27 @@ version = "0.3.8"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "ef53942eb7bf7ff43a617b3e2c1c4a5ecf5944a7c1bc12d7ee39bbb15e5c1519"
 
+[[package]]
+name = "memoffset"
+version = "0.6.5"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "5aa361d4faea93603064a027415f07bd8e1d5c88c9fbf68bf56a285428fd79ce"
+dependencies = [
+ "autocfg",
+]
+
+[[package]]
+name = "nix"
+version = "0.24.3"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "fa52e972a9a719cecb6864fb88568781eb706bac2cd1d4f04a648542dbf78069"
+dependencies = [
+ "bitflags",
+ "cfg-if",
+ "libc",
+ "memoffset",
+]
+
 [[package]]
 name = "once_cell"
 version = "1.18.0"
diff --git a/src/overlay/Cargo.toml b/src/overlay/Cargo.toml
index f610c1cfed3d..541cece1e8ed 100644
--- a/src/overlay/Cargo.toml
+++ b/src/overlay/Cargo.toml
@@ -7,3 +7,4 @@ edition = "2021"
 clap = { version = "4.3.2", features = ["derive"] }
 base64 = "0.21.2"
 tempfile = "3.3.0"
+nix = "0.24.2"
\ No newline at end of file
diff --git a/src/overlay/src/main.rs b/src/overlay/src/main.rs
index c4605c0e84f0..e24284a0f179 100644
--- a/src/overlay/src/main.rs
+++ b/src/overlay/src/main.rs
@@ -146,7 +146,7 @@ fn main() -> io::Result<()> {
         unmounter.0.push(n);
     }
 
-    // Mont the overlay if we have multiple layers, otherwise do a bind-mount.
+    // Mount the overlay if we have multiple layers, otherwise do a bind-mount.
     let mp = std::fs::canonicalize(&args.directory)?;
     if unmounter.0.len() == 1 {
         let p = unmounter.1.path().join(unmounter.0.first().unwrap());
@@ -165,23 +165,25 @@ fn main() -> io::Result<()> {
         let saved = std::env::current_dir()?;
         set_current_dir(unmounter.1.path())?;
 
-        let status = Command::new("mount")
-            .arg("none")
-            .arg(&mp)
-            .args(&[
-                "-t",
-                "overlay",
-                "-o",
-                &format!("lowerdir={}", unmounter.0.join(":")),
-            ])
-            .status()?;
-        if !status.success() {
-            return Err(Error::new(
+        let lowerdirs = unmounter.0.join(":");
+        let opts = format!("lowerdir={}", lowerdirs);
+    
+        // Replace the mount(8) tool with nix::mount to address the limitation of FSCONFIG_SET_STRING,
+        // which has a 256-byte limit and cannot accommodate multiple lowerdir entries.
+        nix::mount::mount(
+            Some("overlay"),
+            &mp,
+            Some("overlay"),
+            nix::mount::MsFlags::empty(),
+            Some(opts.as_str()),
+        )
+        .map_err(|e| {
+            Error::new(
                 ErrorKind::Other,
-                format!("failed to mount overlay: {status}"),
-            ));
-        }
-
+                format!("failed to mount overlay to {}: {}", mp.display(), e),
+            )
+        })?;
+    
         set_current_dir(saved)?;
     }