Only backup database and config file before update

src/NzbDrone.Common/Disk/DiskProviderBase.cs

@@ -204,6 +204,20 @@ namespace NzbDrone.Common.Disk
             File.Delete(path);
         }
 
+        public void CopyFile(string source, string destination, bool overwrite = false)
+        {
+            Ensure.That(source, () => source).IsValidPath();
+            Ensure.That(destination, () => destination).IsValidPath();
+
+            if (source.PathEquals(destination))
+            {
+                Logger.Warn("Source and destination can't be the same {0}", source);
+                return;
+            }
+
+            File.Copy(source, destination, overwrite);
+        }
+
         public void MoveFile(string source, string destination)
         {
             Ensure.That(source, () => source).IsValidPath();

src/NzbDrone.Common/Disk/IDiskProvider.cs

@@ -26,6 +26,7 @@ namespace NzbDrone.Common.Disk
         void CopyFolder(string source, string destination);
         void MoveFolder(string source, string destination);
         void DeleteFile(string path);
+        void CopyFile(string source, string destination, bool overwrite = false);
         void MoveFile(string source, string destination);
         void DeleteFolder(string path, bool recursive);
         string ReadAllText(string filePath);

src/NzbDrone.Common/PathExtensions.cs

@@ -161,6 +161,16 @@ namespace NzbDrone.Common
             return Path.Combine(GetUpdateSandboxFolder(appFolderInfo), UPDATE_BACKUP_APPDATA_FOLDER_NAME);
         }
 
+        public static string GetUpdateBackupConfigFile(this IAppFolderInfo appFolderInfo)
+        {
+            return Path.Combine(GetUpdateBackUpAppDataFolder(appFolderInfo), APP_CONFIG_FILE);
+        }
+
+        public static string GetUpdateBackupDatabase(this IAppFolderInfo appFolderInfo)
+        {
+            return Path.Combine(GetUpdateBackUpAppDataFolder(appFolderInfo), NZBDRONE_DB);
+        }
+
         public static string GetUpdatePackageFolder(this IAppFolderInfo appFolderInfo)
         {
             return Path.Combine(GetUpdateSandboxFolder(appFolderInfo), UPDATE_PACKAGE_FOLDER_NAME);

src/NzbDrone.Update/UpdateEngine/BackupAppData.cs

@@ -27,18 +27,11 @@ namespace NzbDrone.Update.UpdateEngine
         public void Backup()
         {
             _logger.Info("Backing up appdata (database/config)");
-            var appDataPath = _appFolderInfo.GetAppDataPath();
             var backupFolderAppData = _appFolderInfo.GetUpdateBackUpAppDataFolder();
-            var binFolder = Path.Combine(backupFolderAppData, "bin");
 
             _diskProvider.CreateFolder(backupFolderAppData);
-            _diskProvider.CopyFolder(appDataPath, backupFolderAppData);
+            _diskProvider.CopyFile(_appFolderInfo.GetConfigPath(), _appFolderInfo.GetUpdateBackupConfigFile(), true);
-
+            _diskProvider.CopyFile(_appFolderInfo.GetNzbDroneDatabase(), _appFolderInfo.GetUpdateBackupDatabase(), true);
-            if (_diskProvider.FolderExists(binFolder))
-            {
-                _logger.Info("Deleting bin folder from appdata");
-                _diskProvider.DeleteFolder(binFolder, true);
-            }
         }
     }
 }