diff --git a/core/java/android/os/incremental/IIncrementalService.aidl b/core/java/android/os/incremental/IIncrementalService.aidl
index 61e6a05..be8b929 100644
--- a/core/java/android/os/incremental/IIncrementalService.aidl
+++ b/core/java/android/os/incremental/IIncrementalService.aidl
@@ -90,9 +90,10 @@
     int unlink(int storageId, in @utf8InCpp String path);
 
     /**
-     * Checks if a file's certain range is loaded. File is specified by its path.
+     * Returns overall loading progress of all the files on a storage, progress value between [0,1].
+     * Returns a negative value on error.
      */
-    boolean isFileRangeLoaded(int storageId, in @utf8InCpp String path, long start, long end);
+    float getLoadingProgress(int storageId);
 
     /**
      * Reads the metadata of a file. File is specified by either its path or 16 byte id.
diff --git a/core/java/android/os/incremental/IncrementalStorage.java b/core/java/android/os/incremental/IncrementalStorage.java
index ca6114f..b8dbfbb 100644
--- a/core/java/android/os/incremental/IncrementalStorage.java
+++ b/core/java/android/os/incremental/IncrementalStorage.java
@@ -304,29 +304,21 @@
     }
 
     /**
-     * Checks whether a file under the current storage directory is fully loaded.
+     * Returns the loading progress of a storage
      *
-     * @param path The relative path of the file.
-     * @return True if the file is fully loaded.
+     * @return progress value between [0, 1].
      */
-    public boolean isFileFullyLoaded(@NonNull String path) {
-        return isFileRangeLoaded(path, 0, -1);
-    }
-
-    /**
-     * Checks whether a range in a file if loaded.
-     *
-     * @param path The relative path of the file.
-     * @param start            The starting offset of the range.
-     * @param end              The ending offset of the range.
-     * @return True if the file is fully loaded.
-     */
-    public boolean isFileRangeLoaded(@NonNull String path, long start, long end) {
+    public float getLoadingProgress() throws IOException {
         try {
-            return mService.isFileRangeLoaded(mId, path, start, end);
+            final float res = mService.getLoadingProgress(mId);
+            if (res < 0) {
+                throw new IOException(
+                        "getLoadingProgress() failed at querying loading progress, errno " + -res);
+            }
+            return res;
         } catch (RemoteException e) {
             e.rethrowFromSystemServer();
-            return false;
+            return 0;
         }
     }
 
diff --git a/services/incremental/BinderIncrementalService.cpp b/services/incremental/BinderIncrementalService.cpp
index 0ae10b6..41945a2 100644
--- a/services/incremental/BinderIncrementalService.cpp
+++ b/services/incremental/BinderIncrementalService.cpp
@@ -237,11 +237,9 @@
     return ok();
 }
 
-binder::Status BinderIncrementalService::isFileRangeLoaded(int32_t storageId,
-                                                           const std::string& path, int64_t start,
-                                                           int64_t end, bool* _aidl_return) {
-    // TODO: implement
-    *_aidl_return = false;
+binder::Status BinderIncrementalService::getLoadingProgress(int32_t storageId,
+                                                            float* _aidl_return) {
+    *_aidl_return = mImpl.getLoadingProgress(storageId);
     return ok();
 }
 
diff --git a/services/incremental/BinderIncrementalService.h b/services/incremental/BinderIncrementalService.h
index 1015494..8b40350 100644
--- a/services/incremental/BinderIncrementalService.h
+++ b/services/incremental/BinderIncrementalService.h
@@ -66,8 +66,7 @@
                             int32_t destStorageId, const std::string& destPath,
                             int32_t* _aidl_return) final;
     binder::Status unlink(int32_t storageId, const std::string& path, int32_t* _aidl_return) final;
-    binder::Status isFileRangeLoaded(int32_t storageId, const std::string& path, int64_t start,
-                                     int64_t end, bool* _aidl_return) final;
+    binder::Status getLoadingProgress(int32_t storageId, float* _aidl_return) final;
     binder::Status getMetadataByPath(int32_t storageId, const std::string& path,
                                      std::vector<uint8_t>* _aidl_return) final;
     binder::Status getMetadataById(int32_t storageId, const std::vector<uint8_t>& id,
diff --git a/services/incremental/IncrementalService.cpp b/services/incremental/IncrementalService.cpp
index f7082a9..ba6ae92 100644
--- a/services/incremental/IncrementalService.cpp
+++ b/services/incremental/IncrementalService.cpp
@@ -37,7 +37,6 @@
 #include "Metadata.pb.h"
 
 using namespace std::literals;
-namespace fs = std::filesystem;
 
 constexpr const char* kDataUsageStats = "android.permission.LOADER_USAGE_STATS";
 constexpr const char* kOpUsage = "android:loader_usage_stats";
@@ -276,6 +275,7 @@
         mJni(sm.getJni()),
         mLooper(sm.getLooper()),
         mTimedQueue(sm.getTimedQueue()),
+        mFs(sm.getFs()),
         mIncrementalDir(rootDir) {
     CHECK(mVold) << "Vold service is unavailable";
     CHECK(mDataLoaderManager) << "DataLoaderManagerService is unavailable";
@@ -283,6 +283,7 @@
     CHECK(mJni) << "JNI is unavailable";
     CHECK(mLooper) << "Looper is unavailable";
     CHECK(mTimedQueue) << "TimedQueue is unavailable";
+    CHECK(mFs) << "Fs is unavailable";
 
     mJobQueue.reserve(16);
     mJobProcessor = std::thread([this]() {
@@ -344,7 +345,8 @@
             }
             dprintf(fd, "    storages (%d): {\n", int(mnt.storages.size()));
             for (auto&& [storageId, storage] : mnt.storages) {
-                dprintf(fd, "      [%d] -> [%s]\n", storageId, storage.name.c_str());
+                dprintf(fd, "      [%d] -> [%s] (%d %% loaded) \n", storageId, storage.name.c_str(),
+                        (int)(getLoadingProgressFromPath(mnt, storage.name.c_str()) * 100));
             }
             dprintf(fd, "    }\n");
 
@@ -1671,6 +1673,45 @@
     return mRunning;
 }
 
+float IncrementalService::getLoadingProgress(StorageId storage) const {
+    std::unique_lock l(mLock);
+    const auto ifs = getIfsLocked(storage);
+    if (!ifs) {
+        LOG(ERROR) << "getLoadingProgress failed, invalid storageId: " << storage;
+        return -EINVAL;
+    }
+    const auto storageInfo = ifs->storages.find(storage);
+    if (storageInfo == ifs->storages.end()) {
+        LOG(ERROR) << "getLoadingProgress failed, no storage: " << storage;
+        return -EINVAL;
+    }
+    l.unlock();
+    return getLoadingProgressFromPath(*ifs, storageInfo->second.name);
+}
+
+float IncrementalService::getLoadingProgressFromPath(const IncFsMount& ifs,
+                                                     std::string_view storagePath) const {
+    size_t totalBlocks = 0, filledBlocks = 0;
+    const auto filePaths = mFs->listFilesRecursive(storagePath);
+    for (const auto& filePath : filePaths) {
+        const auto [filledBlocksCount, totalBlocksCount] =
+                mIncFs->countFilledBlocks(ifs.control, filePath);
+        if (filledBlocksCount < 0) {
+            LOG(ERROR) << "getLoadingProgress failed to get filled blocks count for: " << filePath
+                       << " errno: " << filledBlocksCount;
+            return filledBlocksCount;
+        }
+        totalBlocks += totalBlocksCount;
+        filledBlocks += filledBlocksCount;
+    }
+
+    if (totalBlocks == 0) {
+        LOG(ERROR) << "getLoadingProgress failed to get total num of blocks";
+        return -EINVAL;
+    }
+    return (float)filledBlocks / (float)totalBlocks;
+}
+
 bool IncrementalService::perfLoggingEnabled() {
     static const bool enabled = base::GetBoolProperty("incremental.perflogging", false);
     return enabled;
@@ -2029,11 +2070,13 @@
 
         // Healthcheck depends on timestamp of the oldest pending read.
         // To get it, we need to re-open a pendingReads FD to get a full list of reads.
-        // Additionally we need to re-register for epoll with fresh FDs in case there are no reads.
+        // Additionally we need to re-register for epoll with fresh FDs in case there are no
+        // reads.
         const auto now = Clock::now();
         const auto kernelTsUs = getOldestPendingReadTs();
         if (baseline) {
-            // Updating baseline only on looper/epoll callback, i.e. on new set of pending reads.
+            // Updating baseline only on looper/epoll callback, i.e. on new set of pending
+            // reads.
             mHealthBase = {now, kernelTsUs};
         }
 
diff --git a/services/incremental/IncrementalService.h b/services/incremental/IncrementalService.h
index a6cc946..cd6bfed 100644
--- a/services/incremental/IncrementalService.h
+++ b/services/incremental/IncrementalService.h
@@ -132,9 +132,7 @@
              std::string_view newPath);
     int unlink(StorageId storage, std::string_view path);
 
-    bool isRangeLoaded(StorageId storage, FileId file, std::pair<BlockIndex, BlockIndex> range) {
-        return false;
-    }
+    float getLoadingProgress(StorageId storage) const;
 
     RawMetadata getMetadata(StorageId storage, std::string_view path) const;
     RawMetadata getMetadata(StorageId storage, FileId node) const;
@@ -341,6 +339,8 @@
     int makeDirs(const IncFsMount& ifs, StorageId storageId, std::string_view path, int mode);
     binder::Status applyStorageParams(IncFsMount& ifs, bool enableReadLogs);
 
+    float getLoadingProgressFromPath(const IncFsMount& ifs, std::string_view path) const;
+
     void registerAppOpsCallback(const std::string& packageName);
     bool unregisterAppOpsCallback(const std::string& packageName);
     void onAppOpChanged(const std::string& packageName);
@@ -363,6 +363,7 @@
     const std::unique_ptr<JniWrapper> mJni;
     const std::unique_ptr<LooperWrapper> mLooper;
     const std::unique_ptr<TimedQueueWrapper> mTimedQueue;
+    const std::unique_ptr<FsWrapper> mFs;
     const std::string mIncrementalDir;
 
     mutable std::mutex mLock;
diff --git a/services/incremental/ServiceWrappers.cpp b/services/incremental/ServiceWrappers.cpp
index 99a35ad..1ed46c4 100644
--- a/services/incremental/ServiceWrappers.cpp
+++ b/services/incremental/ServiceWrappers.cpp
@@ -25,6 +25,7 @@
 #include <binder/AppOpsManager.h>
 #include <utils/String16.h>
 
+#include <filesystem>
 #include <thread>
 
 #include "IncrementalServiceValidation.h"
@@ -165,6 +166,29 @@
     FileId getFileId(const Control& control, std::string_view path) const final {
         return incfs::getFileId(control, path);
     }
+    std::pair<IncFsBlockIndex, IncFsBlockIndex> countFilledBlocks(
+            const Control& control, std::string_view path) const final {
+        const auto fileId = incfs::getFileId(control, path);
+        const auto fd = incfs::openForSpecialOps(control, fileId);
+        int res = fd.get();
+        if (!fd.ok()) {
+            return {res, res};
+        }
+        const auto ranges = incfs::getFilledRanges(res);
+        res = ranges.first;
+        if (res) {
+            return {res, res};
+        }
+        const auto totalBlocksCount = ranges.second.internalRawRanges().endIndex;
+        int filledBlockCount = 0;
+        for (const auto& dataRange : ranges.second.dataRanges()) {
+            filledBlockCount += dataRange.size();
+        }
+        for (const auto& hashRange : ranges.second.hashRanges()) {
+            filledBlockCount += hashRange.size();
+        }
+        return {filledBlockCount, totalBlocksCount};
+    }
     ErrorCode link(const Control& control, std::string_view from, std::string_view to) const final {
         return incfs::link(control, from, to);
     }
@@ -265,6 +289,23 @@
     std::thread mThread;
 };
 
+class RealFsWrapper : public FsWrapper {
+public:
+    RealFsWrapper() = default;
+    ~RealFsWrapper() = default;
+
+    std::vector<std::string> listFilesRecursive(std::string_view directoryPath) const final {
+        std::vector<std::string> files;
+        for (const auto& entry : std::filesystem::recursive_directory_iterator(directoryPath)) {
+            if (!entry.is_regular_file()) {
+                continue;
+            }
+            files.push_back(entry.path().c_str());
+        }
+        return files;
+    }
+};
+
 RealServiceManager::RealServiceManager(sp<IServiceManager> serviceManager, JNIEnv* env)
       : mServiceManager(std::move(serviceManager)), mJvm(RealJniWrapper::getJvm(env)) {}
 
@@ -316,6 +357,10 @@
     return std::make_unique<RealTimedQueueWrapper>(mJvm);
 }
 
+std::unique_ptr<FsWrapper> RealServiceManager::getFs() {
+    return std::make_unique<RealFsWrapper>();
+}
+
 static JavaVM* getJavaVm(JNIEnv* env) {
     CHECK(env);
     JavaVM* jvm = nullptr;
diff --git a/services/incremental/ServiceWrappers.h b/services/incremental/ServiceWrappers.h
index 8cd726fd..82a1704 100644
--- a/services/incremental/ServiceWrappers.h
+++ b/services/incremental/ServiceWrappers.h
@@ -91,6 +91,8 @@
     virtual incfs::RawMetadata getMetadata(const Control& control, FileId fileid) const = 0;
     virtual incfs::RawMetadata getMetadata(const Control& control, std::string_view path) const = 0;
     virtual FileId getFileId(const Control& control, std::string_view path) const = 0;
+    virtual std::pair<IncFsBlockIndex, IncFsBlockIndex> countFilledBlocks(
+            const Control& control, std::string_view path) const = 0;
     virtual ErrorCode link(const Control& control, std::string_view from,
                            std::string_view to) const = 0;
     virtual ErrorCode unlink(const Control& control, std::string_view path) const = 0;
@@ -106,7 +108,8 @@
     virtual ~AppOpsManagerWrapper() = default;
     virtual binder::Status checkPermission(const char* permission, const char* operation,
                                            const char* package) const = 0;
-    virtual void startWatchingMode(int32_t op, const String16& packageName, const sp<IAppOpsCallback>& callback) = 0;
+    virtual void startWatchingMode(int32_t op, const String16& packageName,
+                                   const sp<IAppOpsCallback>& callback) = 0;
     virtual void stopWatchingMode(const sp<IAppOpsCallback>& callback) = 0;
 };
 
@@ -134,6 +137,12 @@
     virtual void stop() = 0;
 };
 
+class FsWrapper {
+public:
+    virtual ~FsWrapper() = default;
+    virtual std::vector<std::string> listFilesRecursive(std::string_view directoryPath) const = 0;
+};
+
 class ServiceManagerWrapper {
 public:
     virtual ~ServiceManagerWrapper() = default;
@@ -144,6 +153,7 @@
     virtual std::unique_ptr<JniWrapper> getJni() = 0;
     virtual std::unique_ptr<LooperWrapper> getLooper() = 0;
     virtual std::unique_ptr<TimedQueueWrapper> getTimedQueue() = 0;
+    virtual std::unique_ptr<FsWrapper> getFs() = 0;
 };
 
 // --- Real stuff ---
@@ -159,6 +169,7 @@
     std::unique_ptr<JniWrapper> getJni() final;
     std::unique_ptr<LooperWrapper> getLooper() final;
     std::unique_ptr<TimedQueueWrapper> getTimedQueue() final;
+    std::unique_ptr<FsWrapper> getFs() final;
 
 private:
     template <class INTERFACE>
diff --git a/services/incremental/test/IncrementalServiceTest.cpp b/services/incremental/test/IncrementalServiceTest.cpp
index 1ae9e25..44cef49 100644
--- a/services/incremental/test/IncrementalServiceTest.cpp
+++ b/services/incremental/test/IncrementalServiceTest.cpp
@@ -54,8 +54,10 @@
     MOCK_CONST_METHOD1(unmountIncFs, binder::Status(const std::string& dir));
     MOCK_CONST_METHOD2(bindMount,
                        binder::Status(const std::string& sourceDir, const std::string& argetDir));
-    MOCK_CONST_METHOD2(setIncFsMountOptions,
-                       binder::Status(const ::android::os::incremental::IncrementalFileSystemControlParcel&, bool));
+    MOCK_CONST_METHOD2(
+            setIncFsMountOptions,
+            binder::Status(const ::android::os::incremental::IncrementalFileSystemControlParcel&,
+                           bool));
 
     void mountIncFsFails() {
         ON_CALL(*this, mountIncFs(_, _, _, _))
@@ -80,8 +82,8 @@
     }
     void setIncFsMountOptionsFails() const {
         ON_CALL(*this, setIncFsMountOptions(_, _))
-                .WillByDefault(
-                        Return(binder::Status::fromExceptionCode(1, String8("failed to set options"))));
+                .WillByDefault(Return(
+                        binder::Status::fromExceptionCode(1, String8("failed to set options"))));
     }
     void setIncFsMountOptionsSuccess() {
         ON_CALL(*this, setIncFsMountOptions(_, _)).WillByDefault(Return(binder::Status::ok()));
@@ -280,8 +282,12 @@
     MOCK_CONST_METHOD2(getMetadata, RawMetadata(const Control& control, FileId fileid));
     MOCK_CONST_METHOD2(getMetadata, RawMetadata(const Control& control, std::string_view path));
     MOCK_CONST_METHOD2(getFileId, FileId(const Control& control, std::string_view path));
+    MOCK_CONST_METHOD2(countFilledBlocks,
+                       std::pair<IncFsBlockIndex, IncFsBlockIndex>(const Control& control,
+                                                                   std::string_view path));
     MOCK_CONST_METHOD3(link,
-                       ErrorCode(const Control& control, std::string_view from, std::string_view to));
+                       ErrorCode(const Control& control, std::string_view from,
+                                 std::string_view to));
     MOCK_CONST_METHOD2(unlink, ErrorCode(const Control& control, std::string_view path));
     MOCK_CONST_METHOD2(openForSpecialOps, base::unique_fd(const Control& control, FileId id));
     MOCK_CONST_METHOD1(writeBlocks, ErrorCode(std::span<const DataBlock> blocks));
@@ -293,6 +299,19 @@
 
     void makeFileFails() { ON_CALL(*this, makeFile(_, _, _, _, _)).WillByDefault(Return(-1)); }
     void makeFileSuccess() { ON_CALL(*this, makeFile(_, _, _, _, _)).WillByDefault(Return(0)); }
+
+    void countFilledBlocksSuccess() {
+        ON_CALL(*this, countFilledBlocks(_, _)).WillByDefault(Return(std::make_pair(1, 2)));
+    }
+
+    void countFilledBlocksFails() {
+        ON_CALL(*this, countFilledBlocks(_, _)).WillByDefault(Return(std::make_pair(-1, -1)));
+    }
+
+    void countFilledBlocksEmpty() {
+        ON_CALL(*this, countFilledBlocks(_, _)).WillByDefault(Return(std::make_pair(0, 0)));
+    }
+
     void openMountSuccess() {
         ON_CALL(*this, openMount(_)).WillByDefault(Invoke(this, &MockIncFs::openMountForHealth));
     }
@@ -447,6 +466,21 @@
     Job mWhat;
 };
 
+class MockFsWrapper : public FsWrapper {
+public:
+    MOCK_CONST_METHOD1(listFilesRecursive, std::vector<std::string>(std::string_view));
+    void hasNoFile() {
+        ON_CALL(*this, listFilesRecursive(_)).WillByDefault(Return(std::vector<std::string>()));
+    }
+    void hasFiles() {
+        ON_CALL(*this, listFilesRecursive(_))
+                .WillByDefault(Invoke(this, &MockFsWrapper::fakeFiles));
+    }
+    std::vector<std::string> fakeFiles(std::string_view directoryPath) {
+        return {"base.apk", "split.apk", "lib/a.so"};
+    }
+};
+
 class MockStorageHealthListener : public os::incremental::BnStorageHealthListener {
 public:
     MOCK_METHOD2(onHealthStatus, binder::Status(int32_t storageId, int32_t status));
@@ -474,23 +508,28 @@
                        std::unique_ptr<MockAppOpsManager> appOpsManager,
                        std::unique_ptr<MockJniWrapper> jni,
                        std::unique_ptr<MockLooperWrapper> looper,
-                       std::unique_ptr<MockTimedQueueWrapper> timedQueue)
+                       std::unique_ptr<MockTimedQueueWrapper> timedQueue,
+                       std::unique_ptr<MockFsWrapper> fs)
           : mVold(std::move(vold)),
             mDataLoaderManager(std::move(dataLoaderManager)),
             mIncFs(std::move(incfs)),
             mAppOpsManager(std::move(appOpsManager)),
             mJni(std::move(jni)),
             mLooper(std::move(looper)),
-            mTimedQueue(std::move(timedQueue)) {}
+            mTimedQueue(std::move(timedQueue)),
+            mFs(std::move(fs)) {}
     std::unique_ptr<VoldServiceWrapper> getVoldService() final { return std::move(mVold); }
     std::unique_ptr<DataLoaderManagerWrapper> getDataLoaderManager() final {
         return std::move(mDataLoaderManager);
     }
     std::unique_ptr<IncFsWrapper> getIncFs() final { return std::move(mIncFs); }
-    std::unique_ptr<AppOpsManagerWrapper> getAppOpsManager() final { return std::move(mAppOpsManager); }
+    std::unique_ptr<AppOpsManagerWrapper> getAppOpsManager() final {
+        return std::move(mAppOpsManager);
+    }
     std::unique_ptr<JniWrapper> getJni() final { return std::move(mJni); }
     std::unique_ptr<LooperWrapper> getLooper() final { return std::move(mLooper); }
     std::unique_ptr<TimedQueueWrapper> getTimedQueue() final { return std::move(mTimedQueue); }
+    std::unique_ptr<FsWrapper> getFs() final { return std::move(mFs); }
 
 private:
     std::unique_ptr<MockVoldService> mVold;
@@ -500,6 +539,7 @@
     std::unique_ptr<MockJniWrapper> mJni;
     std::unique_ptr<MockLooperWrapper> mLooper;
     std::unique_ptr<MockTimedQueueWrapper> mTimedQueue;
+    std::unique_ptr<MockFsWrapper> mFs;
 };
 
 // --- IncrementalServiceTest ---
@@ -523,6 +563,8 @@
         mLooper = looper.get();
         auto timedQueue = std::make_unique<NiceMock<MockTimedQueueWrapper>>();
         mTimedQueue = timedQueue.get();
+        auto fs = std::make_unique<NiceMock<MockFsWrapper>>();
+        mFs = fs.get();
         mIncrementalService =
                 std::make_unique<IncrementalService>(MockServiceManager(std::move(vold),
                                                                         std::move(
@@ -531,12 +573,14 @@
                                                                         std::move(appOps),
                                                                         std::move(jni),
                                                                         std::move(looper),
-                                                                        std::move(timedQueue)),
+                                                                        std::move(timedQueue),
+                                                                        std::move(fs)),
                                                      mRootDir.path);
         mDataLoaderParcel.packageName = "com.test";
         mDataLoaderParcel.arguments = "uri";
         mDataLoaderManager->unbindFromDataLoaderSuccess();
         mIncrementalService->onSystemReady();
+        setupSuccess();
     }
 
     void setUpExistingMountDir(const std::string& rootDir) {
@@ -560,6 +604,14 @@
                 .WillByDefault(Invoke(mIncFs, &MockIncFs::getStorageMetadata));
     }
 
+    void setupSuccess() {
+        mVold->mountIncFsSuccess();
+        mIncFs->makeFileSuccess();
+        mVold->bindMountSuccess();
+        mDataLoaderManager->bindToDataLoaderSuccess();
+        mDataLoaderManager->getDataLoaderSuccess();
+    }
+
 protected:
     NiceMock<MockVoldService>* mVold = nullptr;
     NiceMock<MockIncFs>* mIncFs = nullptr;
@@ -568,6 +620,7 @@
     NiceMock<MockJniWrapper>* mJni = nullptr;
     NiceMock<MockLooperWrapper>* mLooper = nullptr;
     NiceMock<MockTimedQueueWrapper>* mTimedQueue = nullptr;
+    NiceMock<MockFsWrapper>* mFs = nullptr;
     NiceMock<MockDataLoader>* mDataLoader = nullptr;
     std::unique_ptr<IncrementalService> mIncrementalService;
     TemporaryDir mRootDir;
@@ -641,11 +694,6 @@
 }
 
 TEST_F(IncrementalServiceTest, testDeleteStorageSuccess) {
-    mVold->mountIncFsSuccess();
-    mIncFs->makeFileSuccess();
-    mVold->bindMountSuccess();
-    mDataLoaderManager->bindToDataLoaderSuccess();
-    mDataLoaderManager->getDataLoaderSuccess();
     EXPECT_CALL(*mDataLoaderManager, bindToDataLoader(_, _, _, _)).Times(1);
     EXPECT_CALL(*mDataLoaderManager, unbindFromDataLoader(_)).Times(1);
     EXPECT_CALL(*mDataLoader, create(_, _, _, _)).Times(1);
@@ -661,11 +709,6 @@
 }
 
 TEST_F(IncrementalServiceTest, testDataLoaderDestroyed) {
-    mVold->mountIncFsSuccess();
-    mIncFs->makeFileSuccess();
-    mVold->bindMountSuccess();
-    mDataLoaderManager->bindToDataLoaderSuccess();
-    mDataLoaderManager->getDataLoaderSuccess();
     EXPECT_CALL(*mDataLoaderManager, bindToDataLoader(_, _, _, _)).Times(2);
     EXPECT_CALL(*mDataLoaderManager, unbindFromDataLoader(_)).Times(1);
     EXPECT_CALL(*mDataLoader, create(_, _, _, _)).Times(2);
@@ -682,12 +725,7 @@
 }
 
 TEST_F(IncrementalServiceTest, testStartDataLoaderCreate) {
-    mVold->mountIncFsSuccess();
-    mIncFs->makeFileSuccess();
-    mVold->bindMountSuccess();
     mDataLoader->initializeCreateOkNoStatus();
-    mDataLoaderManager->bindToDataLoaderSuccess();
-    mDataLoaderManager->getDataLoaderSuccess();
     EXPECT_CALL(*mDataLoaderManager, bindToDataLoader(_, _, _, _)).Times(1);
     EXPECT_CALL(*mDataLoaderManager, unbindFromDataLoader(_)).Times(1);
     EXPECT_CALL(*mDataLoader, create(_, _, _, _)).Times(1);
@@ -705,12 +743,7 @@
 }
 
 TEST_F(IncrementalServiceTest, testStartDataLoaderPendingStart) {
-    mVold->mountIncFsSuccess();
-    mIncFs->makeFileSuccess();
-    mVold->bindMountSuccess();
     mDataLoader->initializeCreateOkNoStatus();
-    mDataLoaderManager->bindToDataLoaderSuccess();
-    mDataLoaderManager->getDataLoaderSuccess();
     EXPECT_CALL(*mDataLoaderManager, bindToDataLoader(_, _, _, _)).Times(1);
     EXPECT_CALL(*mDataLoaderManager, unbindFromDataLoader(_)).Times(1);
     EXPECT_CALL(*mDataLoader, create(_, _, _, _)).Times(2);
@@ -727,12 +760,7 @@
 }
 
 TEST_F(IncrementalServiceTest, testStartDataLoaderCreateUnavailable) {
-    mVold->mountIncFsSuccess();
-    mIncFs->makeFileSuccess();
-    mVold->bindMountSuccess();
     mDataLoader->initializeCreateOkNoStatus();
-    mDataLoaderManager->bindToDataLoaderSuccess();
-    mDataLoaderManager->getDataLoaderSuccess();
     EXPECT_CALL(*mDataLoaderManager, bindToDataLoader(_, _, _, _)).Times(1);
     EXPECT_CALL(*mDataLoaderManager, unbindFromDataLoader(_)).Times(1);
     EXPECT_CALL(*mDataLoader, create(_, _, _, _)).Times(1);
@@ -748,14 +776,10 @@
 }
 
 TEST_F(IncrementalServiceTest, testStartDataLoaderRecreateOnPendingReads) {
-    mVold->mountIncFsSuccess();
-    mIncFs->makeFileSuccess();
-    mIncFs->openMountSuccess();
     mIncFs->waitForPendingReadsSuccess();
-    mVold->bindMountSuccess();
+    mIncFs->openMountSuccess();
     mDataLoader->initializeCreateOkNoStatus();
-    mDataLoaderManager->bindToDataLoaderSuccess();
-    mDataLoaderManager->getDataLoaderSuccess();
+
     EXPECT_CALL(*mDataLoaderManager, bindToDataLoader(_, _, _, _)).Times(2);
     EXPECT_CALL(*mDataLoaderManager, unbindFromDataLoader(_)).Times(2);
     EXPECT_CALL(*mDataLoader, create(_, _, _, _)).Times(2);
@@ -776,12 +800,8 @@
 }
 
 TEST_F(IncrementalServiceTest, testStartDataLoaderUnhealthyStorage) {
-    mVold->mountIncFsSuccess();
-    mIncFs->makeFileSuccess();
     mIncFs->openMountSuccess();
-    mVold->bindMountSuccess();
-    mDataLoaderManager->bindToDataLoaderSuccess();
-    mDataLoaderManager->getDataLoaderSuccess();
+
     EXPECT_CALL(*mDataLoaderManager, bindToDataLoader(_, _, _, _)).Times(1);
     EXPECT_CALL(*mDataLoaderManager, unbindFromDataLoader(_)).Times(1);
     EXPECT_CALL(*mDataLoader, create(_, _, _, _)).Times(1);
@@ -906,13 +926,9 @@
 }
 
 TEST_F(IncrementalServiceTest, testSetIncFsMountOptionsSuccess) {
-    mVold->mountIncFsSuccess();
-    mIncFs->makeFileSuccess();
-    mVold->bindMountSuccess();
     mVold->setIncFsMountOptionsSuccess();
-    mDataLoaderManager->bindToDataLoaderSuccess();
-    mDataLoaderManager->getDataLoaderSuccess();
     mAppOpsManager->checkPermissionSuccess();
+
     EXPECT_CALL(*mDataLoaderManager, unbindFromDataLoader(_));
     EXPECT_CALL(*mVold, unmountIncFs(_)).Times(2);
     // We are calling setIncFsMountOptions(true).
@@ -930,13 +946,9 @@
 }
 
 TEST_F(IncrementalServiceTest, testSetIncFsMountOptionsSuccessAndDisabled) {
-    mVold->mountIncFsSuccess();
-    mIncFs->makeFileSuccess();
-    mVold->bindMountSuccess();
     mVold->setIncFsMountOptionsSuccess();
-    mDataLoaderManager->bindToDataLoaderSuccess();
-    mDataLoaderManager->getDataLoaderSuccess();
     mAppOpsManager->checkPermissionSuccess();
+
     EXPECT_CALL(*mDataLoaderManager, unbindFromDataLoader(_));
     EXPECT_CALL(*mVold, unmountIncFs(_)).Times(2);
     // Enabling and then disabling readlogs.
@@ -958,14 +970,10 @@
 }
 
 TEST_F(IncrementalServiceTest, testSetIncFsMountOptionsSuccessAndPermissionChanged) {
-    mVold->mountIncFsSuccess();
-    mIncFs->makeFileSuccess();
-    mVold->bindMountSuccess();
     mVold->setIncFsMountOptionsSuccess();
-    mDataLoaderManager->bindToDataLoaderSuccess();
-    mDataLoaderManager->getDataLoaderSuccess();
     mAppOpsManager->checkPermissionSuccess();
     mAppOpsManager->initializeStartWatchingMode();
+
     EXPECT_CALL(*mDataLoaderManager, unbindFromDataLoader(_));
     EXPECT_CALL(*mVold, unmountIncFs(_)).Times(2);
     // We are calling setIncFsMountOptions(true).
@@ -987,12 +995,8 @@
 }
 
 TEST_F(IncrementalServiceTest, testSetIncFsMountOptionsCheckPermissionFails) {
-    mVold->mountIncFsSuccess();
-    mIncFs->makeFileSuccess();
-    mVold->bindMountSuccess();
-    mDataLoaderManager->bindToDataLoaderSuccess();
-    mDataLoaderManager->getDataLoaderSuccess();
     mAppOpsManager->checkPermissionFails();
+
     EXPECT_CALL(*mDataLoaderManager, unbindFromDataLoader(_));
     EXPECT_CALL(*mVold, unmountIncFs(_)).Times(2);
     // checkPermission fails, no calls to set opitions,  start or stop WatchingMode.
@@ -1008,13 +1012,9 @@
 }
 
 TEST_F(IncrementalServiceTest, testSetIncFsMountOptionsFails) {
-    mVold->mountIncFsSuccess();
-    mIncFs->makeFileSuccess();
-    mVold->bindMountSuccess();
     mVold->setIncFsMountOptionsFails();
-    mDataLoaderManager->bindToDataLoaderSuccess();
-    mDataLoaderManager->getDataLoaderSuccess();
     mAppOpsManager->checkPermissionSuccess();
+
     EXPECT_CALL(*mDataLoaderManager, unbindFromDataLoader(_));
     EXPECT_CALL(*mVold, unmountIncFs(_)).Times(2);
     // We are calling setIncFsMountOptions.
@@ -1031,11 +1031,6 @@
 }
 
 TEST_F(IncrementalServiceTest, testMakeDirectory) {
-    mVold->mountIncFsSuccess();
-    mIncFs->makeFileSuccess();
-    mVold->bindMountSuccess();
-    mDataLoaderManager->bindToDataLoaderSuccess();
-    mDataLoaderManager->getDataLoaderSuccess();
     TemporaryDir tempDir;
     int storageId = mIncrementalService->createStorage(tempDir.path, std::move(mDataLoaderParcel),
                                                        IncrementalService::CreateOptions::CreateNew,
@@ -1055,11 +1050,6 @@
 }
 
 TEST_F(IncrementalServiceTest, testMakeDirectories) {
-    mVold->mountIncFsSuccess();
-    mIncFs->makeFileSuccess();
-    mVold->bindMountSuccess();
-    mDataLoaderManager->bindToDataLoaderSuccess();
-    mDataLoaderManager->getDataLoaderSuccess();
     TemporaryDir tempDir;
     int storageId = mIncrementalService->createStorage(tempDir.path, std::move(mDataLoaderParcel),
                                                        IncrementalService::CreateOptions::CreateNew,
@@ -1078,4 +1068,51 @@
     auto res = mIncrementalService->makeDirs(storageId, dir_path, 0555);
     ASSERT_EQ(res, 0);
 }
+
+TEST_F(IncrementalServiceTest, testGetLoadingProgressFailsWithNoFile) {
+    mIncFs->countFilledBlocksSuccess();
+    mFs->hasNoFile();
+
+    TemporaryDir tempDir;
+    int storageId = mIncrementalService->createStorage(tempDir.path, std::move(mDataLoaderParcel),
+                                                       IncrementalService::CreateOptions::CreateNew,
+                                                       {}, {}, {});
+    ASSERT_EQ(-EINVAL, mIncrementalService->getLoadingProgress(storageId));
+}
+
+TEST_F(IncrementalServiceTest, testGetLoadingProgressFailsWithFailedRanges) {
+    mIncFs->countFilledBlocksFails();
+    mFs->hasFiles();
+
+    TemporaryDir tempDir;
+    int storageId = mIncrementalService->createStorage(tempDir.path, std::move(mDataLoaderParcel),
+                                                       IncrementalService::CreateOptions::CreateNew,
+                                                       {}, {}, {});
+    EXPECT_CALL(*mIncFs, countFilledBlocks(_, _)).Times(1);
+    ASSERT_EQ(-1, mIncrementalService->getLoadingProgress(storageId));
+}
+
+TEST_F(IncrementalServiceTest, testGetLoadingProgressFailsWithEmptyRanges) {
+    mIncFs->countFilledBlocksEmpty();
+    mFs->hasFiles();
+
+    TemporaryDir tempDir;
+    int storageId = mIncrementalService->createStorage(tempDir.path, std::move(mDataLoaderParcel),
+                                                       IncrementalService::CreateOptions::CreateNew,
+                                                       {}, {}, {});
+    EXPECT_CALL(*mIncFs, countFilledBlocks(_, _)).Times(3);
+    ASSERT_EQ(-EINVAL, mIncrementalService->getLoadingProgress(storageId));
+}
+
+TEST_F(IncrementalServiceTest, testGetLoadingProgressSuccess) {
+    mIncFs->countFilledBlocksSuccess();
+    mFs->hasFiles();
+
+    TemporaryDir tempDir;
+    int storageId = mIncrementalService->createStorage(tempDir.path, std::move(mDataLoaderParcel),
+                                                       IncrementalService::CreateOptions::CreateNew,
+                                                       {}, {}, {});
+    EXPECT_CALL(*mIncFs, countFilledBlocks(_, _)).Times(3);
+    ASSERT_EQ(0.5, mIncrementalService->getLoadingProgress(storageId));
+}
 } // namespace android::os::incremental