diff --git a/fs_mgr/libsnapshot/include/libsnapshot/snapshot.h b/fs_mgr/libsnapshot/include/libsnapshot/snapshot.h
index ed92dd7..a56078a 100644
--- a/fs_mgr/libsnapshot/include/libsnapshot/snapshot.h
+++ b/fs_mgr/libsnapshot/include/libsnapshot/snapshot.h
@@ -395,6 +395,10 @@
     bool WriteSnapshotUpdateStatus(LockedFile* file, const SnapshotUpdateStatus& status);
     std::string GetStateFilePath() const;
 
+    // Interact with /metadata/ota/merge_state.
+    // This file contains information related to the snapshot merge process.
+    std::string GetMergeStateFilePath() const;
+
     // Helpers for merging.
     bool SwitchSnapshotToMerge(LockedFile* lock, const std::string& name);
     bool RewriteSnapshotDeviceTable(const std::string& dm_name);
diff --git a/fs_mgr/libsnapshot/snapshot.cpp b/fs_mgr/libsnapshot/snapshot.cpp
index ba53615..bfa0a1f 100644
--- a/fs_mgr/libsnapshot/snapshot.cpp
+++ b/fs_mgr/libsnapshot/snapshot.cpp
@@ -1739,6 +1739,10 @@
     return metadata_dir_ + "/state"s;
 }
 
+std::string SnapshotManager::GetMergeStateFilePath() const {
+    return metadata_dir_ + "/merge_state"s;
+}
+
 std::string SnapshotManager::GetLockPath() const {
     return metadata_dir_;
 }