Add log

userspace/ksud/src/mount.rs

@@ -174,8 +174,18 @@ pub fn mount_overlayfs(
             "mount_overlayfs_fsopen failed: {:?}, trying fallback method.",
             e
         );
-
-        mount_overlayfs_fallback(&lowerdir_config, upperdir, workdir, dest)?;
+        if let Err(e) =
+            mount_overlayfs_fallback(&lowerdir_config, upperdir, workdir, dest)
+        {
+            warn!(
+                "mount overlayfs for root failed: {:?}",
+                e
+            );
+        } else {
+            info!(
+                "mount overlayfs for root by mount_overlayfs_fallback success."
+            );
+        }
     }
     Ok(())
 }
@@ -304,8 +314,7 @@ pub fn mount_overlay(
     mount_seq.sort();
     mount_seq.dedup();
 
-    mount_overlayfs(module_roots, root, upperdir, workdir, root)
-        .with_context(|| "mount overlayfs for root failed")?;
+    mount_overlayfs(module_roots, root, upperdir, workdir, root)?;
     for mount_point in mount_seq.iter() {
         let Some(mount_point) = mount_point else {
             continue;