Move checksum calculation to IBackupEntry.

src/Backups/BackupEntryFromAppendOnlyFile.cpp

@@ -1,25 +1,52 @@
 #include <Backups/BackupEntryFromAppendOnlyFile.h>
+#include <Disks/DiskEncrypted.h>
 #include <IO/LimitSeekableReadBuffer.h>
 
 
 namespace DB
 {
 
+namespace
+{
+    UInt64 calculateSize(const DiskPtr & disk, const String & file_path, const std::optional<UInt64> & file_size, bool disk_is_encrypted)
+    {
+        if (file_size)
+        {
+            if (disk_is_encrypted)
+                return DiskEncrypted::convertFileSizeToEncryptedFileSize(*file_size);
+            else
+                return *file_size;
+        }
+        else
+        {
+            if (disk_is_encrypted)
+                return disk->getEncryptedFileSize(file_path);
+            else
+                return disk->getFileSize(file_path);
+        }
+    }
+}
+
 BackupEntryFromAppendOnlyFile::BackupEntryFromAppendOnlyFile(
-    const DiskPtr & disk_,
-    const String & file_path_,
-    const ReadSettings & settings_,
-    const std::optional<UInt64> & file_size_,
-    const std::optional<UInt128> & checksum_)
-    : BackupEntryFromImmutableFile(disk_, file_path_, settings_, file_size_, checksum_)
-    , limit(BackupEntryFromImmutableFile::getSize())
+    const DiskPtr & disk_, const String & file_path_, const ReadSettings & settings_, const std::optional<UInt64> & file_size_)
+    : disk(disk_)
+    , file_path(file_path_)
+    , data_source_description(disk->getDataSourceDescription())
+    , settings(settings_)
+    , size(calculateSize(disk_, file_path_, file_size_, data_source_description.is_encrypted))
 {
 }
 
+BackupEntryFromAppendOnlyFile::~BackupEntryFromAppendOnlyFile() = default;
+
 std::unique_ptr<SeekableReadBuffer> BackupEntryFromAppendOnlyFile::getReadBuffer() const
 {
-    auto buf = BackupEntryFromImmutableFile::getReadBuffer();
-    return std::make_unique<LimitSeekableReadBuffer>(std::move(buf), 0, limit);
+    std::unique_ptr<SeekableReadBuffer> buf;
+    if (data_source_description.is_encrypted)
+        buf = disk->readEncryptedFile(file_path, settings);
+    else
+        buf = disk->readFile(file_path, settings);
+    return std::make_unique<LimitSeekableReadBuffer>(std::move(buf), 0, size);
 }
 
 }

src/Backups/BackupEntryFromAppendOnlyFile.h

@@ -1,6 +1,6 @@
 #pragma once
 
-#include <Backups/BackupEntryFromImmutableFile.h>
+#include <Backups/BackupEntryWithChecksumCalculation.h>
 
 
 namespace DB
@@ -8,24 +8,34 @@ namespace DB
 
 /// Represents a file prepared to be included in a backup, assuming that until this backup entry is destroyed
 /// the file can be appended with new data, but the bytes which are already in the file won't be changed.
-class BackupEntryFromAppendOnlyFile : public BackupEntryFromImmutableFile
+class BackupEntryFromAppendOnlyFile : public BackupEntryWithChecksumCalculation<IBackupEntry>
 {
 public:
-    /// The constructor is allowed to not set `file_size_` or `checksum_`, in that case it will be calculated from the data.
+    /// The constructor is allowed to not set `file_size_`, in that case it will be calculated from the data.
     BackupEntryFromAppendOnlyFile(
         const DiskPtr & disk_,
         const String & file_path_,
         const ReadSettings & settings_,
-        const std::optional<UInt64> & file_size_ = {},
-        const std::optional<UInt128> & checksum_ = {});
+        const std::optional<UInt64> & file_size_ = {});
+
+    ~BackupEntryFromAppendOnlyFile() override;
 
-    UInt64 getSize() const override { return limit; }
     std::unique_ptr<SeekableReadBuffer> getReadBuffer() const override;
+    UInt64 getSize() const override { return size; }
 
-    bool isFromImmutableFile() const override { return false; }
+    DataSourceDescription getDataSourceDescription() const override { return data_source_description; }
+    bool isEncryptedByDisk() const override { return data_source_description.is_encrypted; }
+
+    bool isFromFile() const override { return true; }
+    DiskPtr getDisk() const override { return disk; }
+    String getFilePath() const override { return file_path; }
 
 private:
-    const UInt64 limit;
+    const DiskPtr disk;
+    const String file_path;
+    const DataSourceDescription data_source_description;
+    const ReadSettings settings;
+    const UInt64 size;
 };
 
 }

src/Backups/BackupEntryFromImmutableFile.cpp

@@ -1,8 +1,6 @@
 #include <Backups/BackupEntryFromImmutableFile.h>
 #include <Disks/IDisk.h>
-#include <Disks/IO/createReadBufferFromFileBase.h>
-#include <Poco/File.h>
-#include <Common/filesystemHelpers.h>
+#include <Disks/DiskEncrypted.h>
 
 
 namespace DB
@@ -18,26 +16,13 @@ BackupEntryFromImmutableFile::BackupEntryFromImmutableFile(
     , file_path(file_path_)
     , data_source_description(disk->getDataSourceDescription())
     , settings(settings_)
-    , file_size(data_source_description.is_encrypted ? std::optional<UInt64>{} : file_size_)
-    , checksum(data_source_description.is_encrypted ? std::optional<UInt128>{} : checksum_)
+    , file_size(file_size_)
+    , checksum(checksum_)
 {
 }
 
 BackupEntryFromImmutableFile::~BackupEntryFromImmutableFile() = default;
 
-UInt64 BackupEntryFromImmutableFile::getSize() const
-{
-    std::lock_guard lock{get_file_size_mutex};
-    if (!file_size)
-    {
-        if (data_source_description.is_encrypted)
-            file_size = disk->getEncryptedFileSize(file_path);
-        else
-            file_size = disk->getFileSize(file_path);
-    }
-    return *file_size;
-}
-
 std::unique_ptr<SeekableReadBuffer> BackupEntryFromImmutableFile::getReadBuffer() const
 {
     if (data_source_description.is_encrypted)
@@ -46,4 +31,43 @@ std::unique_ptr<SeekableReadBuffer> BackupEntryFromImmutableFile::getReadBuffer(
         return disk->readFile(file_path, settings);
 }
 
+UInt64 BackupEntryFromImmutableFile::getSize() const
+{
+    std::lock_guard lock{size_and_checksum_mutex};
+    if (!file_size_adjusted)
+    {
+        if (!file_size)
+            file_size = disk->getFileSize(file_path);
+        if (data_source_description.is_encrypted)
+            *file_size = DiskEncrypted::convertFileSizeToEncryptedFileSize(*file_size);
+        file_size_adjusted = true;
+    }
+    return *file_size;
+}
+
+UInt128 BackupEntryFromImmutableFile::getChecksum() const
+{
+    std::lock_guard lock{size_and_checksum_mutex};
+    if (!checksum_adjusted)
+    {
+        /// TODO: We should not just ignore `checksum` if `data_source_description.is_encrypted == true`, we should use it somehow.
+        if (!checksum || data_source_description.is_encrypted)
+            checksum = BackupEntryWithChecksumCalculation<IBackupEntry>::getChecksum();
+        checksum_adjusted = true;
+    }
+    return *checksum;
+}
+
+std::optional<UInt128> BackupEntryFromImmutableFile::getPartialChecksum(size_t prefix_length) const
+{
+    if (prefix_length == 0)
+        return 0;
+
+    if (prefix_length >= getSize())
+        return getChecksum();
+
+    /// For immutable files we don't use partial checksums.
+    return std::nullopt;
+}
+
 }

src/Backups/BackupEntryFromImmutableFile.h

@@ -1,6 +1,6 @@
 #pragma once
 
-#include <Backups/IBackupEntry.h>
+#include <Backups/BackupEntryWithChecksumCalculation.h>
 #include <IO/ReadSettings.h>
 #include <base/defines.h>
 #include <mutex>
@@ -11,7 +11,7 @@ class IDisk;
 using DiskPtr = std::shared_ptr<IDisk>;
 
 /// Represents a file prepared to be included in a backup, assuming that until this backup entry is destroyed the file won't be changed.
-class BackupEntryFromImmutableFile : public IBackupEntry
+class BackupEntryFromImmutableFile : public BackupEntryWithChecksumCalculation<IBackupEntry>
 {
 public:
     /// The constructor is allowed to not set `file_size_` or `checksum_`, in that case it will be calculated from the data.
@@ -24,13 +24,14 @@ public:
 
     ~BackupEntryFromImmutableFile() override;
 
-    UInt64 getSize() const override;
-    std::optional<UInt128> getChecksum() const override { return checksum; }
     std::unique_ptr<SeekableReadBuffer> getReadBuffer() const override;
 
-    bool isEncryptedByDisk() const override { return data_source_description.is_encrypted; }
+    UInt64 getSize() const override;
+    UInt128 getChecksum() const override;
+    std::optional<UInt128> getPartialChecksum(size_t prefix_length) const override;
 
     DataSourceDescription getDataSourceDescription() const override { return data_source_description; }
+    bool isEncryptedByDisk() const override { return data_source_description.is_encrypted; }
 
     bool isFromFile() const override { return true; }
     bool isFromImmutableFile() const override { return true; }
@@ -41,10 +42,12 @@ private:
     const DiskPtr disk;
     const String file_path;
     const DataSourceDescription data_source_description;
-    ReadSettings settings;
-    mutable std::optional<UInt64> file_size TSA_GUARDED_BY(get_file_size_mutex);
-    mutable std::mutex get_file_size_mutex;
-    const std::optional<UInt128> checksum;
+    const ReadSettings settings;
+    mutable std::optional<UInt64> file_size;
+    mutable std::optional<UInt64> checksum;
+    mutable bool file_size_adjusted = false;
+    mutable bool checksum_adjusted = false;
+    mutable std::mutex size_and_checksum_mutex;
 };
 
 }

src/Backups/BackupEntryFromMemory.cpp

@@ -5,13 +5,12 @@
 namespace DB
 {
 
-BackupEntryFromMemory::BackupEntryFromMemory(const void * data_, size_t size_, const std::optional<UInt128> & checksum_)
-    : BackupEntryFromMemory(String{reinterpret_cast<const char *>(data_), size_}, checksum_)
+BackupEntryFromMemory::BackupEntryFromMemory(const void * data_, size_t size_)
+    : BackupEntryFromMemory(String{reinterpret_cast<const char *>(data_), size_})
 {
 }
 
-BackupEntryFromMemory::BackupEntryFromMemory(String data_, const std::optional<UInt128> & checksum_)
-    : data(std::move(data_)), checksum(checksum_)
+BackupEntryFromMemory::BackupEntryFromMemory(String data_) : data(std::move(data_))
 {
 }
 

src/Backups/BackupEntryFromMemory.h

@@ -1,32 +1,26 @@
 #pragma once
 
-#include <Backups/IBackupEntry.h>
-#include <IO/ReadBufferFromString.h>
+#include <Backups/BackupEntryWithChecksumCalculation.h>
 
 
 namespace DB
 {
 
 /// Represents small preloaded data to be included in a backup.
-class BackupEntryFromMemory : public IBackupEntry
+class BackupEntryFromMemory : public BackupEntryWithChecksumCalculation<IBackupEntry>
 {
 public:
     /// The constructor is allowed to not set `checksum_`, in that case it will be calculated from the data.
-    BackupEntryFromMemory(const void * data_, size_t size_, const std::optional<UInt128> & checksum_ = {});
-    explicit BackupEntryFromMemory(String data_, const std::optional<UInt128> & checksum_ = {});
+    BackupEntryFromMemory(const void * data_, size_t size_);
+    explicit BackupEntryFromMemory(String data_);
 
-    UInt64 getSize() const override { return data.size(); }
-    std::optional<UInt128> getChecksum() const override { return checksum; }
     std::unique_ptr<SeekableReadBuffer> getReadBuffer() const override;
+    UInt64 getSize() const override { return data.size(); }
 
-    DataSourceDescription getDataSourceDescription() const override
-    {
-        return DataSourceDescription{DataSourceType::RAM, "", false, false};
-    }
+    DataSourceDescription getDataSourceDescription() const override { return DataSourceDescription{DataSourceType::RAM, "", false, false}; }
 
 private:
     const String data;
-    const std::optional<UInt128> checksum;
 };
 
 }

src/Backups/BackupEntryFromSmallFile.cpp

@@ -29,21 +29,18 @@ namespace
 }
 
 
-BackupEntryFromSmallFile::BackupEntryFromSmallFile(const String & file_path_, const std::optional<UInt128> & checksum_)
+BackupEntryFromSmallFile::BackupEntryFromSmallFile(const String & file_path_)
     : file_path(file_path_)
     , data_source_description(DiskLocal::getLocalDataSourceDescription(file_path_))
     , data(readFile(file_path_))
-    , checksum(checksum_)
 {
 }
 
-BackupEntryFromSmallFile::BackupEntryFromSmallFile(
-    const DiskPtr & disk_, const String & file_path_, const std::optional<UInt128> & checksum_)
+BackupEntryFromSmallFile::BackupEntryFromSmallFile(const DiskPtr & disk_, const String & file_path_)
     : disk(disk_)
     , file_path(file_path_)
     , data_source_description(disk_->getDataSourceDescription())
     , data(readFile(disk_, file_path, data_source_description.is_encrypted))
-    , checksum(data_source_description.is_encrypted ? std::optional<UInt128>{} : checksum_)
 {
 }
 

src/Backups/BackupEntryFromSmallFile.h

@@ -1,6 +1,6 @@
 #pragma once
 
-#include <Backups/IBackupEntry.h>
+#include <Backups/BackupEntryWithChecksumCalculation.h>
 
 
 namespace DB
@@ -10,37 +10,27 @@ using DiskPtr = std::shared_ptr<IDisk>;
 
 /// Represents a file prepared to be included in a backup,
 /// assuming that the file is small and can be easily loaded into memory.
-class BackupEntryFromSmallFile : public IBackupEntry
+class BackupEntryFromSmallFile : public BackupEntryWithChecksumCalculation<IBackupEntry>
 {
 public:
-    /// The constructor is allowed to not set `checksum_`, in that case it will be calculated from the data.
-    explicit BackupEntryFromSmallFile(
-        const String & file_path_,
-        const std::optional<UInt128> & checksum_ = {});
+    explicit BackupEntryFromSmallFile(const String & file_path_);
+    BackupEntryFromSmallFile(const DiskPtr & disk_, const String & file_path_);
 
-    BackupEntryFromSmallFile(
-        const DiskPtr & disk_,
-        const String & file_path_,
-        const std::optional<UInt128> & checksum_ = {});
-
-    UInt64 getSize() const override { return data.size(); }
-    std::optional<UInt128> getChecksum() const override { return checksum; }
     std::unique_ptr<SeekableReadBuffer> getReadBuffer() const override;
+    UInt64 getSize() const override { return data.size(); }
 
+    DataSourceDescription getDataSourceDescription() const override { return data_source_description; }
     bool isEncryptedByDisk() const override { return data_source_description.is_encrypted; }
 
     bool isFromFile() const override { return true; }
     DiskPtr getDisk() const override { return disk; }
     String getFilePath() const override { return file_path; }
 
-    DataSourceDescription getDataSourceDescription() const override { return data_source_description; }
-
 private:
     const DiskPtr disk;
     const String file_path;
     const DataSourceDescription data_source_description;
     const String data;
-    const std::optional<UInt128> checksum;
 };
 
 }

src/Backups/BackupEntryWithChecksumCalculation.cpp

@@ -0,0 +1,48 @@
+#include <Backups/BackupEntryWithChecksumCalculation.h>
+#include <IO/HashingReadBuffer.h>
+
+
+namespace DB
+{
+
+template <typename Base>
+UInt128 BackupEntryWithChecksumCalculation<Base>::getChecksum() const
+{
+    std::lock_guard lock{checksum_calculation_mutex};
+    if (!calculated_checksum)
+    {
+        auto read_buffer = this->getReadBuffer();
+        HashingReadBuffer hashing_read_buffer(*read_buffer);
+        hashing_read_buffer.ignoreAll();
+        calculated_checksum = hashing_read_buffer.getHash();
+    }
+    return *calculated_checksum;
+}
+
+template <typename Base>
+std::optional<UInt128> BackupEntryWithChecksumCalculation<Base>::getPartialChecksum(size_t prefix_length) const
+{
+    if (prefix_length == 0)
+        return 0;
+
+    if (prefix_length >= this->getSize())
+        return this->getChecksum();
+
+    auto read_buffer = this->getReadBuffer();
+    HashingReadBuffer hashing_read_buffer(*read_buffer);
+    hashing_read_buffer.ignore(prefix_length);
+    auto partial_checksum = hashing_read_buffer.getHash();
+
+    std::lock_guard lock{checksum_calculation_mutex};
+    if (!calculated_checksum)
+    {
+        hashing_read_buffer.ignoreAll();
+        calculated_checksum = hashing_read_buffer.getHash();
+    }
+
+    return partial_checksum;
+}
+
+template class BackupEntryWithChecksumCalculation<IBackupEntry>;
+
+}

src/Backups/BackupEntryWithChecksumCalculation.h

@@ -0,0 +1,22 @@
+#pragma once
+
+#include <Backups/IBackupEntry.h>
+
+
+namespace DB
+{
+
+/// Calculates the checksum and the partial checksum for a backup entry based on ReadBuffer returned by getReadBuffer().
+template <typename Base>
+class BackupEntryWithChecksumCalculation : public Base
+{
+public:
+    UInt128 getChecksum() const override;
+    std::optional<UInt128> getPartialChecksum(size_t prefix_length) const override;
+
+private:
+    mutable std::optional<UInt128> calculated_checksum;
+    mutable std::mutex checksum_calculation_mutex;
+};
+
+}

src/Backups/BackupEntryWrappedWith.h

@@ -15,15 +15,16 @@ public:
     BackupEntryWrappedWith(BackupEntryPtr entry_, T && custom_value_) : entry(entry_), custom_value(std::move(custom_value_)) { }
     ~BackupEntryWrappedWith() override = default;
 
-    UInt64 getSize() const override { return entry->getSize(); }
-    std::optional<UInt128> getChecksum() const override { return entry->getChecksum(); }
     std::unique_ptr<SeekableReadBuffer> getReadBuffer() const override { return entry->getReadBuffer(); }
+    UInt64 getSize() const override { return entry->getSize(); }
+    UInt128 getChecksum() const override { return entry->getChecksum(); }
+    std::optional<UInt128> getPartialChecksum(size_t prefix_length) const override { return entry->getPartialChecksum(prefix_length); }
+    DataSourceDescription getDataSourceDescription() const override { return entry->getDataSourceDescription(); }
     bool isEncryptedByDisk() const override { return entry->isEncryptedByDisk(); }
     bool isFromFile() const override { return entry->isFromFile(); }
     bool isFromImmutableFile() const override { return entry->isFromImmutableFile(); }
     String getFilePath() const override { return entry->getFilePath(); }
     DiskPtr getDisk() const override { return entry->getDisk(); }
-    DataSourceDescription getDataSourceDescription() const override { return entry->getDataSourceDescription(); }
 
 private:
     BackupEntryPtr entry;

src/Backups/BackupFileInfo.cpp

@@ -7,7 +7,7 @@
 #include <Common/scope_guard_safe.h>
 #include <Common/setThreadName.h>
 #include <Common/ThreadPool.h>
-#include <IO/HashingReadBuffer.h>
+#include <base/hex.h>
 
 
 namespace DB
@@ -49,44 +49,19 @@ namespace
     struct ChecksumsForNewEntry
     {
         UInt128 full_checksum;
-        UInt128 prefix_checksum;
+        std::optional<UInt128> prefix_checksum;
     };
 
     /// Calculate checksum for backup entry if it's empty.
     /// Also able to calculate additional checksum of some prefix.
     ChecksumsForNewEntry calculateNewEntryChecksumsIfNeeded(const BackupEntryPtr & entry, size_t prefix_size)
     {
+        ChecksumsForNewEntry res;
+        /// The partial checksum should be calculated before the full checksum to enable optimization in BackupEntryWithChecksumCalculation.
         if (prefix_size > 0)
-        {
-            auto read_buffer = entry->getReadBuffer();
-            HashingReadBuffer hashing_read_buffer(*read_buffer);
-            hashing_read_buffer.ignore(prefix_size);
-            auto prefix_checksum = hashing_read_buffer.getHash();
-            if (entry->getChecksum() == std::nullopt)
-            {
-                hashing_read_buffer.ignoreAll();
-                auto full_checksum = hashing_read_buffer.getHash();
-                return ChecksumsForNewEntry{full_checksum, prefix_checksum};
-            }
-            else
-            {
-                return ChecksumsForNewEntry{*(entry->getChecksum()), prefix_checksum};
-            }
-        }
-        else
-        {
-            if (entry->getChecksum() == std::nullopt)
-            {
-                auto read_buffer = entry->getReadBuffer();
-                HashingReadBuffer hashing_read_buffer(*read_buffer);
-                hashing_read_buffer.ignoreAll();
-                return ChecksumsForNewEntry{hashing_read_buffer.getHash(), 0};
-            }
-            else
-            {
-                return ChecksumsForNewEntry{*(entry->getChecksum()), 0};
-            }
-        }
+            res.prefix_checksum = entry->getPartialChecksum(prefix_size);
+        res.full_checksum = entry->getChecksum();
+        return res;
     }
 
     /// We store entries' file names in the backup without leading slashes.

src/Backups/BackupIO_File.cpp

@@ -1,10 +1,7 @@
 #include <Backups/BackupIO_File.h>
 #include <Disks/DiskLocal.h>
-//#include <Disks/IDisk.h>
 #include <Disks/IO/createReadBufferFromFileBase.h>
 #include <IO/WriteBufferFromFile.h>
-//#include <IO/copyData.h>
-//#include <Common/filesystemHelpers.h>
 #include <Common/logger_useful.h>
 
 

src/Backups/IBackupEntriesLazyBatch.cpp

@@ -17,11 +17,12 @@ class IBackupEntriesLazyBatch::BackupEntryFromBatch : public IBackupEntry
 public:
     BackupEntryFromBatch(const std::shared_ptr<IBackupEntriesLazyBatch> & batch_, size_t index_) : batch(batch_), index(index_) { }
 
-    UInt64 getSize() const override { return getInternalBackupEntry()->getSize(); }
-    std::optional<UInt128> getChecksum() const override { return getInternalBackupEntry()->getChecksum(); }
     std::unique_ptr<SeekableReadBuffer> getReadBuffer() const override { return getInternalBackupEntry()->getReadBuffer(); }
-    bool isEncryptedByDisk() const override { return getInternalBackupEntry()->isEncryptedByDisk(); }
+    UInt64 getSize() const override { return getInternalBackupEntry()->getSize(); }
+    UInt128 getChecksum() const override { return getInternalBackupEntry()->getChecksum(); }
+    std::optional<UInt128> getPartialChecksum(size_t prefix_length) const override { return getInternalBackupEntry()->getPartialChecksum(prefix_length); }
     DataSourceDescription getDataSourceDescription() const override { return getInternalBackupEntry()->getDataSourceDescription(); }
+    bool isEncryptedByDisk() const override { return getInternalBackupEntry()->isEncryptedByDisk(); }
     bool isFromFile() const override { return getInternalBackupEntry()->isFromFile(); }
     bool isFromImmutableFile() const override { return getInternalBackupEntry()->isFromImmutableFile(); }
     String getFilePath() const override { return getInternalBackupEntry()->getFilePath(); }

src/Backups/IBackupEntry.h

@@ -20,9 +20,12 @@ public:
     /// Returns the size of the data.
     virtual UInt64 getSize() const = 0;
 
-    /// Returns the checksum of the data if it's precalculated.
-    /// Can return nullopt which means the checksum should be calculated from the read buffer.
-    virtual std::optional<UInt128> getChecksum() const { return {}; }
+    /// Returns the checksum of the data.
+    virtual UInt128 getChecksum() const = 0;
+
+    /// Returns a partial checksum, i.e. the checksum calculated for a prefix part of the data.
+    /// Can return nullopt if the partial checksum is too difficult to calculate.
+    virtual std::optional<UInt128> getPartialChecksum(size_t /* prefix_length */) const { return {}; }
 
     /// Returns a read buffer for reading the data.
     virtual std::unique_ptr<SeekableReadBuffer> getReadBuffer() const = 0;

src/Disks/DiskEncrypted.cpp

@@ -348,6 +348,13 @@ size_t DiskEncrypted::getFileSize(const String & path) const
     return size > FileEncryption::Header::kSize ? (size - FileEncryption::Header::kSize) : 0;
 }
 
+size_t DiskEncrypted::convertFileSizeToEncryptedFileSize(size_t file_size)
+{
+    if (file_size)
+        return file_size + FileEncryption::Header::kSize;
+    return 0;
+}
+
 void DiskEncrypted::truncateFile(const String & path, size_t size)
 {
     auto wrapped_path = wrappedPath(path);

src/Disks/DiskEncrypted.h

@@ -223,6 +223,8 @@ public:
         return delegate->getFileSize(wrapped_path);
     }
 
+    static size_t convertFileSizeToEncryptedFileSize(size_t file_size);
+
     void setLastModified(const String & path, const Poco::Timestamp & timestamp) override
     {
         auto wrapped_path = wrappedPath(path);

src/Storages/StorageReplicatedMergeTree.cpp

@@ -9278,10 +9278,9 @@ void StorageReplicatedMergeTree::backupData(
                 auto & hash = part_names_with_hashes_calculating[part_name];
                 if (relative_path.ends_with(".bin"))
                 {
-                    auto checksum = backup_entry->getChecksum();
                     hash.update(relative_path);
                     hash.update(backup_entry->getSize());
-                    hash.update(*checksum);
+                    hash.update(backup_entry->getChecksum());
                 }
                 continue;
             }