Merge pull request 'Btrfs Compactor work, defaulted linux on websockets.' (#77) from linux-improvements into 1.12.4

Reviewed-on: #77

LightlessSync/FileCache/CacheMonitor.cs

@@ -115,6 +115,8 @@ public sealed class CacheMonitor : DisposableMediatorSubscriberBase
 
     public bool StorageisNTFS { get; private set; } = false;
 
+    public bool StorageIsBtrfs { get ; private set; } = false;
+
     public void StartLightlessWatcher(string? lightlessPath)
     {
         LightlessWatcher?.Dispose();
@@ -124,10 +126,19 @@ public sealed class CacheMonitor : DisposableMediatorSubscriberBase
             Logger.LogWarning("Lightless file path is not set, cannot start the FSW for Lightless.");
             return;
         }
+        var fsType = FileSystemHelper.GetFilesystemType(_configService.Current.CacheFolder, _dalamudUtil.IsWine);
 
-        DriveInfo di = new(new DirectoryInfo(_configService.Current.CacheFolder).Root.FullName);
+        if (fsType == FileSystemHelper.FilesystemType.NTFS)
-        StorageisNTFS = string.Equals("NTFS", di.DriveFormat, StringComparison.OrdinalIgnoreCase);
+        {
+            StorageisNTFS = true;
             Logger.LogInformation("Lightless Storage is on NTFS drive: {isNtfs}", StorageisNTFS);
+        }
+
+        if (fsType == FileSystemHelper.FilesystemType.Btrfs)
+        {
+            StorageIsBtrfs = true;
+            Logger.LogInformation("Lightless Storage is on BTRFS drive: {isBtrfs}", StorageIsBtrfs);
+        }
 
         Logger.LogDebug("Initializing Lightless FSW on {path}", lightlessPath);
         LightlessWatcher = new()
@@ -392,51 +403,94 @@ public sealed class CacheMonitor : DisposableMediatorSubscriberBase
 
     public void RecalculateFileCacheSize(CancellationToken token)
     {
-        if (string.IsNullOrEmpty(_configService.Current.CacheFolder) || !Directory.Exists(_configService.Current.CacheFolder))
+        if (string.IsNullOrEmpty(_configService.Current.CacheFolder) ||
+            !Directory.Exists(_configService.Current.CacheFolder))
         {
             FileCacheSize = 0;
             return;
         }
 
         FileCacheSize = -1;
-        DriveInfo di = new(new DirectoryInfo(_configService.Current.CacheFolder).Root.FullName);
+        bool isWine = _dalamudUtil?.IsWine ?? false;
+
         try
         {
-            FileCacheDriveFree = di.AvailableFreeSpace;
+            var drive = DriveInfo.GetDrives()
+                .FirstOrDefault(d => _configService.Current.CacheFolder
+                    .StartsWith(d.Name, StringComparison.OrdinalIgnoreCase));
+
+            if (drive != null)
+                FileCacheDriveFree = drive.AvailableFreeSpace;
         }
         catch (Exception ex)
         {
-            Logger.LogWarning(ex, "Could not determine drive size for Storage Folder {folder}", _configService.Current.CacheFolder);
+            Logger.LogWarning(ex, "Could not determine drive size for storage folder {folder}", _configService.Current.CacheFolder);
         }
 
-        var files = Directory.EnumerateFiles(_configService.Current.CacheFolder).Select(f => new FileInfo(f))
+        var files = Directory.EnumerateFiles(_configService.Current.CacheFolder)
-            .OrderBy(f => f.LastAccessTime).ToList();
+            .Select(f => new FileInfo(f))
-        FileCacheSize = files
+            .OrderBy(f => f.LastAccessTime)
-            .Sum(f =>
+            .ToList();
+
+        long totalSize = 0;
+
+        foreach (var f in files)
         {
             token.ThrowIfCancellationRequested();
 
             try
             {
-                    return _fileCompactor.GetFileSizeOnDisk(f, StorageisNTFS);
+                long size = 0;
-                }
+
-                catch
+                if (!isWine)
                 {
-                    return 0;
+                    try
+                    {
+                        size = _fileCompactor.GetFileSizeOnDisk(f);
                     }
-            });
+                    catch (Exception ex)
+                    {
+                        Logger.LogTrace(ex, "GetFileSizeOnDisk failed for {file}, using fallback length", f.FullName);
+                        size = f.Length;
+                    }
+                }
+                else
+                {
+                    size = f.Length;
+                }
+
+                totalSize += size;
+            }
+            catch (Exception ex)
+            {
+                Logger.LogTrace(ex, "Error getting size for {file}", f.FullName);
+            }
+        }
+
+        FileCacheSize = totalSize;
 
         var maxCacheInBytes = (long)(_configService.Current.MaxLocalCacheInGiB * 1024d * 1024d * 1024d);
-
+        if (FileCacheSize < maxCacheInBytes)
-        if (FileCacheSize < maxCacheInBytes) return;
+            return;
 
         var maxCacheBuffer = maxCacheInBytes * 0.05d;
-        while (FileCacheSize > maxCacheInBytes - (long)maxCacheBuffer)
+
+        while (FileCacheSize > maxCacheInBytes - (long)maxCacheBuffer && files.Count > 0)
         {
             var oldestFile = files[0];
-            FileCacheSize -= _fileCompactor.GetFileSizeOnDisk(oldestFile);
+
+            try
+            {
+                long fileSize = oldestFile.Length;
                 File.Delete(oldestFile.FullName);
-            files.Remove(oldestFile);
+                FileCacheSize -= fileSize;
+            }
+            catch (Exception ex)
+            {
+                Logger.LogTrace(ex, "Failed to delete old file {file}", oldestFile.FullName);
+            }
+
+            files.RemoveAt(0);
         }
     }
 
@@ -644,24 +698,25 @@ public sealed class CacheMonitor : DisposableMediatorSubscriberBase
 
         if (ct.IsCancellationRequested) return;
 
-        // scan new files
+        var newFiles = allScannedFiles.Where(c => !c.Value).Select(c => c.Key).ToList();
-        if (allScannedFiles.Any(c => !c.Value))
+        foreach (var cachePath in newFiles)
         {
-            Parallel.ForEach(allScannedFiles.Where(c => !c.Value).Select(c => c.Key),
+            if (ct.IsCancellationRequested) break;
-                new ParallelOptions()
+            ProcessOne(cachePath);
-                {
+            Interlocked.Increment(ref _currentFileProgress);
-                    MaxDegreeOfParallelism = threadCount,
+        }
-                    CancellationToken = ct
+
-                }, (cachePath) =>
+        Logger.LogTrace("Scanner added {count} new files to db", newFiles.Count);
+
+        void ProcessOne(string? cachePath)
         {
             if (_fileDbManager == null || _ipcManager?.Penumbra == null || cachePath == null)
             {
-                        Logger.LogTrace("Potential null in db: {isDbNull} penumbra: {isPenumbraNull} cachepath: {isPathNull}", _fileDbManager == null, _ipcManager?.Penumbra == null, cachePath == null);
+                Logger.LogTrace("Potential null in db: {isDbNull} penumbra: {isPenumbraNull} cachepath: {isPathNull}",
+                    _fileDbManager == null, _ipcManager?.Penumbra == null, cachePath == null);
                 return;
             }
 
-                    if (ct.IsCancellationRequested) return;
-
             if (!_ipcManager.Penumbra.APIAvailable)
             {
                 Logger.LogWarning("Penumbra not available");
@@ -673,15 +728,14 @@ public sealed class CacheMonitor : DisposableMediatorSubscriberBase
                 var entry = _fileDbManager.CreateFileEntry(cachePath);
                 if (entry == null) _ = _fileDbManager.CreateCacheEntry(cachePath);
             }
+            catch (IOException ioex)
+            {
+                Logger.LogDebug(ioex, "File busy or locked: {file}", cachePath);
+            }
             catch (Exception ex)
             {
                 Logger.LogWarning(ex, "Failed adding {file}", cachePath);
             }
-
-                    Interlocked.Increment(ref _currentFileProgress);
-                });
-
-            Logger.LogTrace("Scanner added {notScanned} new files to db", allScannedFiles.Count(c => !c.Value));
         }
 
         Logger.LogDebug("Scan complete");

LightlessSync/FileCache/FileCacheManager.cs

@@ -203,42 +203,72 @@ public sealed class FileCacheManager : IHostedService
         return output;
     }
 
-    public Task<List<FileCacheEntity>> ValidateLocalIntegrity(IProgress<(int, int, FileCacheEntity)> progress, CancellationToken cancellationToken)
+    public async Task<List<FileCacheEntity>> ValidateLocalIntegrity(IProgress<(int completed, int total, FileCacheEntity current)> progress, CancellationToken cancellationToken)
     {
         _lightlessMediator.Publish(new HaltScanMessage(nameof(ValidateLocalIntegrity)));
         _logger.LogInformation("Validating local storage");
-        var cacheEntries = _fileCaches.Values.SelectMany(v => v.Values.Where(e => e != null)).Where(v => v.IsCacheEntry).ToList();
+
-        List<FileCacheEntity> brokenEntities = [];
+        var cacheEntries = _fileCaches.Values
-        int i = 0;
+            .SelectMany(v => v.Values)
-        foreach (var fileCache in cacheEntries)
+            .Where(v => v.IsCacheEntry)
+            .ToList();
+
+        int total = cacheEntries.Count;
+        int processed = 0;
+        var brokenEntities = new ConcurrentBag<FileCacheEntity>();
+
+        _logger.LogInformation("Checking {count} cache entries...", total);
+
+        await Parallel.ForEachAsync(cacheEntries, new ParallelOptions
         {
-            if (cancellationToken.IsCancellationRequested) break;
+            MaxDegreeOfParallelism = Environment.ProcessorCount,
+            CancellationToken = cancellationToken
+        },
+        async (fileCache, token) =>
+        {
+            try
+            {
+                int current = Interlocked.Increment(ref processed);
+                if (current % 10 == 0)
+                    progress.Report((current, total, fileCache));
 
-            _logger.LogInformation("Validating {file}", fileCache.ResolvedFilepath);
-
-            progress.Report((i, cacheEntries.Count, fileCache));
-            i++;
                 if (!File.Exists(fileCache.ResolvedFilepath))
                 {
                     brokenEntities.Add(fileCache);
-                continue;
+                    return;
                 }
 
+                string computedHash;
                 try
                 {
-                var computedHash = Crypto.GetFileHash(fileCache.ResolvedFilepath);
+                    computedHash = await Crypto.GetFileHashAsync(fileCache.ResolvedFilepath, token).ConfigureAwait(false);
+                }
+                catch (Exception ex)
+                {
+                    _logger.LogWarning(ex, "Error hashing {file}", fileCache.ResolvedFilepath);
+                    brokenEntities.Add(fileCache);
+                    return;
+                }
+
                 if (!string.Equals(computedHash, fileCache.Hash, StringComparison.Ordinal))
                 {
-                    _logger.LogInformation("Failed to validate {file}, got hash {computedHash}, expected hash {hash}", fileCache.ResolvedFilepath, computedHash, fileCache.Hash);
+                    _logger.LogInformation(
+                        "Hash mismatch: {file} (got {computedHash}, expected {expected})",
+                        fileCache.ResolvedFilepath, computedHash, fileCache.Hash);
+
                     brokenEntities.Add(fileCache);
                 }
             }
-            catch (Exception e)
+            catch (OperationCanceledException)
             {
-                _logger.LogWarning(e, "Error during validation of {file}", fileCache.ResolvedFilepath);
+                _logger.LogError("Validation got cancelled for {file}", fileCache.ResolvedFilepath);
+            }
+            catch (Exception ex)
+            {
+                _logger.LogError(ex, "Unexpected error validating {file}", fileCache.ResolvedFilepath);
                 brokenEntities.Add(fileCache);
             }
-        }
+        }).ConfigureAwait(false);
 
         foreach (var brokenEntity in brokenEntities)
         {
@@ -250,12 +280,14 @@ public sealed class FileCacheManager : IHostedService
             }
             catch (Exception ex)
             {
-                _logger.LogWarning(ex, "Could not delete {file}", brokenEntity.ResolvedFilepath);
+                _logger.LogWarning(ex, "Failed to delete invalid cache file {file}", brokenEntity.ResolvedFilepath);
             }
         }
 
         _lightlessMediator.Publish(new ResumeScanMessage(nameof(ValidateLocalIntegrity)));
-        return Task.FromResult(brokenEntities);
+        _logger.LogInformation("Validation complete. Found {count} invalid entries.", brokenEntities.Count);
+
+        return [.. brokenEntities];
     }
 
     public string GetCacheFilePath(string hash, string extension)

LightlessSync/FileCache/FileCompactor.cs

@@ -1,11 +1,12 @@
 using LightlessSync.LightlessConfiguration;
 using LightlessSync.Services;
 using Microsoft.Extensions.Logging;
-using System.Runtime.InteropServices;
+using Microsoft.Win32.SafeHandles;
 using System.Collections.Concurrent;
-using System.Threading;
+using System.Diagnostics;
+using System.Runtime.InteropServices;
 using System.Threading.Channels;
-using System.Threading.Tasks;
+using static LightlessSync.Utils.FileSystemHelper;
 
 namespace LightlessSync.FileCache;
 
@@ -13,42 +14,28 @@ public sealed class FileCompactor : IDisposable
 {
     public const uint FSCTL_DELETE_EXTERNAL_BACKING = 0x90314U;
     public const ulong WOF_PROVIDER_FILE = 2UL;
+    public const int _maxRetries = 3;
 
-    private readonly Dictionary<string, int> _clusterSizes;
     private readonly ConcurrentDictionary<string, byte> _pendingCompactions;
-    private readonly WOF_FILE_COMPRESSION_INFO_V1 _efInfo;
     private readonly ILogger<FileCompactor> _logger;
-
     private readonly LightlessConfigService _lightlessConfigService;
     private readonly DalamudUtilService _dalamudUtilService;
+
     private readonly Channel<string> _compactionQueue;
     private readonly CancellationTokenSource _compactionCts = new();
     private readonly Task _compactionWorker;
     
-    public FileCompactor(ILogger<FileCompactor> logger, LightlessConfigService lightlessConfigService, DalamudUtilService dalamudUtilService)
+    private readonly WOF_FILE_COMPRESSION_INFO_V1 _efInfo = new()
     {
-        _clusterSizes = new(StringComparer.Ordinal);
+        Algorithm = (int)CompressionAlgorithm.XPRESS8K,
-        _pendingCompactions = new(StringComparer.OrdinalIgnoreCase);
-        _logger = logger;
-        _lightlessConfigService = lightlessConfigService;
-        _dalamudUtilService = dalamudUtilService;
-        _efInfo = new WOF_FILE_COMPRESSION_INFO_V1
-        {
-            Algorithm = CompressionAlgorithm.XPRESS8K,
         Flags = 0
     };
 
-        _compactionQueue = Channel.CreateUnbounded<string>(new UnboundedChannelOptions
+    [StructLayout(LayoutKind.Sequential, Pack = 1)]
+    private struct WOF_FILE_COMPRESSION_INFO_V1
     {
-            SingleReader = true,
+        public int Algorithm;
-            SingleWriter = false
+        public ulong Flags;
-        });
-        _compactionWorker = Task.Factory.StartNew(
-                () => ProcessQueueAsync(_compactionCts.Token),
-                _compactionCts.Token,
-                TaskCreationOptions.LongRunning,
-                TaskScheduler.Default)
-            .Unwrap();
     }
 
     private enum CompressionAlgorithm 
@@ -61,226 +48,730 @@ public sealed class FileCompactor : IDisposable
         XPRESS16K = 3
     }
 
-    public bool MassCompactRunning { get; private set; } = false;
+    public FileCompactor(ILogger<FileCompactor> logger, LightlessConfigService lightlessConfigService, DalamudUtilService dalamudUtilService)
+    {
+        _pendingCompactions = new(StringComparer.OrdinalIgnoreCase);
+        _logger = logger;
+        _lightlessConfigService = lightlessConfigService;
+        _dalamudUtilService = dalamudUtilService;
 
+        _compactionQueue = Channel.CreateUnbounded<string>(new UnboundedChannelOptions
+        {
+            SingleReader = true,
+            SingleWriter = false
+        });
+
+        _compactionWorker = Task.Factory.StartNew(() => ProcessQueueAsync(_compactionCts.Token), _compactionCts.Token, TaskCreationOptions.LongRunning,TaskScheduler.Default).Unwrap();
+    }
+
+    public bool MassCompactRunning { get; private set; }
     public string Progress { get; private set; } = string.Empty;
 
+    /// <summary>
+    /// Compact the storage of the Cache Folder
+    /// </summary>
+    /// <param name="compress">Used to check if files needs to be compressed</param>
     public void CompactStorage(bool compress)
     {
         MassCompactRunning = true;
-
+        try
-        int currentFile = 1;
+        {
             var allFiles = Directory.EnumerateFiles(_lightlessConfigService.Current.CacheFolder).ToList();
-        int allFilesCount = allFiles.Count;
+            int total = allFiles.Count;
+            int current = 0;
+
             foreach (var file in allFiles)
             {
-            Progress = $"{currentFile}/{allFilesCount}";
+                current++;
+                Progress = $"{current}/{total}";
+
+                try
+                {
+                    // Compress or decompress files
                     if (compress)
                         CompactFile(file);
                     else
                         DecompressFile(file);
-            currentFile++;
                 }
-
+                catch (IOException ioEx)
-        MassCompactRunning = false;
+                {
+                    _logger.LogDebug(ioEx, "File {file} locked or busy, skipping", file);
                 }
-
+                catch (Exception ex)
-    public long GetFileSizeOnDisk(FileInfo fileInfo, bool? isNTFS = null)
                 {
-        bool ntfs = isNTFS ?? string.Equals(new DriveInfo(fileInfo.Directory!.Root.FullName).DriveFormat, "NTFS", StringComparison.OrdinalIgnoreCase);
+                    _logger.LogWarning(ex, "Error compacting/decompressing file {file}", file);
-
-        if (_dalamudUtilService.IsWine || !ntfs) return fileInfo.Length;
-
-        var clusterSize = GetClusterSize(fileInfo);
-        if (clusterSize == -1) return fileInfo.Length;
-        var losize = GetCompressedFileSizeW(fileInfo.FullName, out uint hosize);
-        var size = (long)hosize << 32 | losize;
-        return ((size + clusterSize - 1) / clusterSize) * clusterSize;
-    }
-
-    public async Task WriteAllBytesAsync(string filePath, byte[] decompressedFile, CancellationToken token)
-    {
-        await File.WriteAllBytesAsync(filePath, decompressedFile, token).ConfigureAwait(false);
-
-        if (_dalamudUtilService.IsWine || !_lightlessConfigService.Current.UseCompactor)
-        {
-            return;
-        }
-
-        EnqueueCompaction(filePath);
-    }
-
-    public void Dispose()
-    {
-        _compactionQueue.Writer.TryComplete();
-        _compactionCts.Cancel();
-        try
-        {
-            if (!_compactionWorker.Wait(TimeSpan.FromSeconds(5)))
-            {
-                _logger.LogDebug("Compaction worker did not shut down within timeout");
                 }
             }
-        catch (Exception ex) when (ex is not OperationCanceledException)
-        {
-            _logger.LogDebug(ex, "Error shutting down compaction worker");
         }
         finally
         {
-            _compactionCts.Dispose();
+            MassCompactRunning = false;
+            Progress = string.Empty;
+        }
     }
 
-        GC.SuppressFinalize(this);
+    /// <summary>
+    /// Write all bytes into a directory async
+    /// </summary>
+    /// <param name="filePath">Bytes will be writen to this filepath</param>
+    /// <param name="bytes">Bytes that have to be written</param>
+    /// <param name="token">Cancellation Token for interupts</param>
+    /// <returns>Writing Task</returns>
+    public async Task WriteAllBytesAsync(string filePath, byte[] bytes, CancellationToken token)
+    {
+        var dir = Path.GetDirectoryName(filePath);
+        if (!string.IsNullOrEmpty(dir) && !Directory.Exists(dir))
+            Directory.CreateDirectory(dir);
+
+        await File.WriteAllBytesAsync(filePath, bytes, token).ConfigureAwait(false);
+
+        if (_lightlessConfigService.Current.UseCompactor)
+            EnqueueCompaction(filePath);
     }
 
-    [DllImport("kernel32.dll")]
+    /// <summary>
-    private static extern int DeviceIoControl(IntPtr hDevice, uint dwIoControlCode, IntPtr lpInBuffer, uint nInBufferSize, IntPtr lpOutBuffer, uint nOutBufferSize, out IntPtr lpBytesReturned, out IntPtr lpOverlapped);
+    /// Gets the File size for an BTRFS or NTFS file system for the given FileInfo
+    /// </summary>
+    /// <param name="path">Amount of blocks used in the disk</param>
+    public long GetFileSizeOnDisk(FileInfo fileInfo)
+    {
+        var fsType = GetFilesystemType(fileInfo.FullName, _dalamudUtilService.IsWine);
 
-    [DllImport("kernel32.dll")]
+        if (fsType == FilesystemType.NTFS && !_dalamudUtilService.IsWine)
-    private static extern uint GetCompressedFileSizeW([In, MarshalAs(UnmanagedType.LPWStr)] string lpFileName,
+        {
-                                              [Out, MarshalAs(UnmanagedType.U4)] out uint lpFileSizeHigh);
+            (bool flowControl, long value) = GetFileSizeNTFS(fileInfo);
+            if (!flowControl)
+            {
+                return value;
+            }
+        }
 
-    [DllImport("kernel32.dll", SetLastError = true, PreserveSig = true)]
+        if (fsType == FilesystemType.Btrfs)
-    private static extern int GetDiskFreeSpaceW([In, MarshalAs(UnmanagedType.LPWStr)] string lpRootPathName,
+        {
-           out uint lpSectorsPerCluster, out uint lpBytesPerSector, out uint lpNumberOfFreeClusters,
+            (bool flowControl, long value) = GetFileSizeBtrfs(fileInfo);
-           out uint lpTotalNumberOfClusters);
+            if (!flowControl)
+            {
+                return value;
+            }
+        }
 
-    [DllImport("WoFUtil.dll")]
+        return fileInfo.Length;
-    private static extern int WofIsExternalFile([MarshalAs(UnmanagedType.LPWStr)] string Filepath, out int IsExternalFile, out uint Provider, out WOF_FILE_COMPRESSION_INFO_V1 Info, ref uint BufferLength);
+    }
 
-    [DllImport("WofUtil.dll")]
+    /// <summary>
-    private static extern int WofSetFileDataLocation(IntPtr FileHandle, ulong Provider, IntPtr ExternalFileInfo, ulong Length);
+    /// Get File Size in an Btrfs file system (Linux/Wine).
+    /// </summary>
+    /// <param name="fileInfo">File that you want the size from.</param>
+    /// <returns>Succesful check and value of the filesize.</returns>
+    /// <exception cref="InvalidOperationException">Fails on the Process in StartProcessInfo</exception>
+    private (bool flowControl, long value) GetFileSizeBtrfs(FileInfo fileInfo)
+    {
+        try
+        {
+            bool isWine = _dalamudUtilService?.IsWine ?? false;
+            string realPath = isWine ? ToLinuxPathIfWine(fileInfo.FullName, isWine) : fileInfo.FullName;
 
+            var fileName = "stat";
+            var arguments = $"-c %b \"{realPath}\"";
+
+            (bool processControl, bool success) = StartProcessInfo(realPath, fileName, arguments, out Process? proc, out string stdout);
+
+            if (!processControl && !success)
+                throw new InvalidOperationException($"stat failed: {proc}");
+
+            if (!long.TryParse(stdout.Trim(), out var blocks))
+                throw new InvalidOperationException($"invalid stat output: {stdout}");
+
+            // st_blocks are always 512-byte on Linux enviroment. 
+            return (flowControl: false, value: blocks * 512L);
+        }
+        catch (Exception ex)
+        {
+            _logger.LogDebug(ex, "Failed stat size for {file}, fallback to Length", fileInfo.FullName);
+        }
+
+        return (flowControl: true, value: default);
+    }
+
+    /// <summary>
+    /// Get File Size in an NTFS file system (Windows).
+    /// </summary>
+    /// <param name="fileInfo">File that you want the size from.</param>
+    /// <returns>Succesful check and value of the filesize.</returns>
+    private (bool flowControl, long value) GetFileSizeNTFS(FileInfo fileInfo)
+    {
+        try
+        {
+            var blockSize = GetBlockSizeForPath(fileInfo.FullName, _logger, _dalamudUtilService.IsWine);
+            var losize = GetCompressedFileSizeW(fileInfo.FullName, out uint hosize);
+            var size = (long)hosize << 32 | losize;
+            return (flowControl: false, value: ((size + blockSize - 1) / blockSize) * blockSize);
+        }
+        catch (Exception ex)
+        {
+            _logger.LogDebug(ex, "Failed stat size for {file}, fallback to Length", fileInfo.FullName);
+        }
+
+        return (flowControl: true, value: default);
+    }
+
+    /// <summary>
+    /// Compressing the given path with BTRFS or NTFS file system.
+    /// </summary>
+    /// <param name="path">Path of the decompressed/normal file</param>
     private void CompactFile(string filePath)
     {
-        var fs = new DriveInfo(new FileInfo(filePath).Directory!.Root.FullName);
-        bool isNTFS = string.Equals(fs.DriveFormat, "NTFS", StringComparison.OrdinalIgnoreCase);
-        if (!isNTFS)
-        {
-            _logger.LogWarning("Drive for file {file} is not NTFS", filePath);
-            return;
-        }
-
         var fi = new FileInfo(filePath);
-        var oldSize = fi.Length;
+        if (!fi.Exists)
-        var clusterSize = GetClusterSize(fi);
-
-        if (oldSize < Math.Max(clusterSize, 8 * 1024))
         {
-            _logger.LogDebug("File {file} is smaller than cluster size ({size}), ignoring", filePath, clusterSize);
+            _logger.LogTrace("Skip compact: missing {file}", filePath);
             return;
         }
 
-        if (!IsCompactedFile(filePath))
+        var fsType = GetFilesystemType(filePath, _dalamudUtilService.IsWine);
+        _logger.LogTrace("Detected filesystem {fs} for {file} (isWine={wine})", fsType, filePath, _dalamudUtilService.IsWine);
+        var oldSize = fi.Length;
+
+        int blockSize = GetBlockSizeForPath(fi.FullName, _logger, _dalamudUtilService.IsWine);
+        if (oldSize < Math.Max(blockSize, 8 * 1024))
         {
-            _logger.LogDebug("Compacting file to XPRESS8K: {file}", filePath);
+            _logger.LogTrace("Skip compact: {file} < block {block}", filePath, blockSize);
-
+            return;
-            WOFCompressFile(filePath);
+        }
 
+        if (fsType == FilesystemType.NTFS && !_dalamudUtilService.IsWine)
+        {
+            if (!IsWOFCompactedFile(filePath))
+            {
+                _logger.LogDebug("NTFS compact XPRESS8K: {file}", filePath);
+                if (WOFCompressFile(filePath))
+                {
                     var newSize = GetFileSizeOnDisk(fi);
-
+                    _logger.LogDebug("NTFS compressed {file} {old} -> {new}", filePath, oldSize, newSize);
-            _logger.LogDebug("Compressed {file} from {orig}b to {comp}b", filePath, oldSize, newSize);
                 }
                 else
                 {
-            _logger.LogDebug("File {file} already compressed", filePath);
+                    _logger.LogWarning("NTFS compression failed or unavailable for {file}", filePath);
                 }
             }
+            else
+            {
+                _logger.LogTrace("Already NTFS-compressed: {file}", filePath);
+            }
+            return;
+        }
 
+        if (fsType == FilesystemType.Btrfs)
+        {
+            if (!IsBtrfsCompressedFile(filePath))
+            {
+                _logger.LogDebug("Btrfs compress zstd: {file}", filePath);
+                if (BtrfsCompressFile(filePath))
+                {
+                    var newSize = GetFileSizeOnDisk(fi);
+                    _logger.LogDebug("Btrfs compressed {file} {old} -> {new}", filePath, oldSize, newSize);
+                }
+                else
+                {
+                    _logger.LogWarning("Btrfs compression failed or unavailable for {file}", filePath);
+                }
+            }
+            else
+            {
+                _logger.LogTrace("Already Btrfs-compressed: {file}", filePath);
+            }
+            return;
+        }
+
+        _logger.LogTrace("Skip compact: unsupported FS for {file}", filePath);
+    }
+
+    /// <summary>
+    /// Decompressing the given path with BTRFS file system or NTFS file system.
+    /// </summary>
+    /// <param name="path">Path of the compressed file</param>
     private void DecompressFile(string path)
     {
-        _logger.LogDebug("Removing compression from {file}", path);
+        _logger.LogDebug("Decompress request: {file}", path);
+        var fsType = GetFilesystemType(path, _dalamudUtilService.IsWine);
+
+        if (fsType == FilesystemType.NTFS && !_dalamudUtilService.IsWine)
+        {
             try
             {
-            using (var fs = new FileStream(path, FileMode.Open))
+                bool flowControl = DecompressWOFFile(path, out FileStream fs);
+                if (!flowControl)
                 {
-#pragma warning disable S3869 // "SafeHandle.DangerousGetHandle" should not be called
+                    return;
-                var hDevice = fs.SafeFileHandle.DangerousGetHandle();
-#pragma warning restore S3869 // "SafeHandle.DangerousGetHandle" should not be called
-                _ = DeviceIoControl(hDevice, FSCTL_DELETE_EXTERNAL_BACKING, nint.Zero, 0, nint.Zero, 0, out _, out _);
                 }
             }
             catch (Exception ex)
             {
-            _logger.LogWarning(ex, "Error decompressing file {path}", path);
+                _logger.LogWarning(ex, "NTFS decompress error {file}", path);
             }
         }
 
-    private int GetClusterSize(FileInfo fi)
+        if (fsType == FilesystemType.Btrfs)
         {
-        if (!fi.Exists) return -1;
-        var root = fi.Directory?.Root.FullName.ToLower() ?? string.Empty;
-        if (string.IsNullOrEmpty(root)) return -1;
-        if (_clusterSizes.TryGetValue(root, out int value)) return value;
-        _logger.LogDebug("Getting Cluster Size for {path}, root {root}", fi.FullName, root);
-        int result = GetDiskFreeSpaceW(root, out uint sectorsPerCluster, out uint bytesPerSector, out _, out _);
-        if (result == 0) return -1;
-        _clusterSizes[root] = (int)(sectorsPerCluster * bytesPerSector);
-        _logger.LogDebug("Determined Cluster Size for root {root}: {cluster}", root, _clusterSizes[root]);
-        return _clusterSizes[root];
-    }
-
-    private static bool IsCompactedFile(string filePath)
-    {
-        uint buf = 8;
-        _ = WofIsExternalFile(filePath, out int isExtFile, out uint _, out var info, ref buf);
-        if (isExtFile == 0) return false;
-        return info.Algorithm == CompressionAlgorithm.XPRESS8K;
-    }
-
-    private void WOFCompressFile(string path)
-    {
-        var efInfoPtr = Marshal.AllocHGlobal(Marshal.SizeOf(_efInfo));
-        Marshal.StructureToPtr(_efInfo, efInfoPtr, fDeleteOld: true);
-        ulong length = (ulong)Marshal.SizeOf(_efInfo);
             try
             {
-            using (var fs = new FileStream(path, FileMode.Open))
+                bool flowControl = DecompressBtrfsFile(path);
+                if (!flowControl)
                 {
-#pragma warning disable S3869 // "SafeHandle.DangerousGetHandle" should not be called
+                    return;
-                var hFile = fs.SafeFileHandle.DangerousGetHandle();
+                }
-#pragma warning restore S3869 // "SafeHandle.DangerousGetHandle" should not be called
+            }
-                if (fs.SafeFileHandle.IsInvalid)
+            catch (Exception ex)
             {
-                    _logger.LogWarning("Invalid file handle to {file}", path);
+                _logger.LogWarning(ex, "Btrfs decompress error {file}", path);
+            }
+        }
+    }
+
+    /// <summary>
+    /// Decompress an BTRFS File
+    /// </summary>
+    /// <param name="path">Path of the compressed file</param>
+    /// <returns>Decompressing state</returns>
+    private bool DecompressBtrfsFile(string path)
+    {
+        var fs = new FileStream(path, FileMode.Open, FileAccess.ReadWrite, FileShare.Read);
+
+        try
+        {
+            bool isWine = _dalamudUtilService?.IsWine ?? false;
+            string realPath = isWine ? ToLinuxPathIfWine(path, isWine) : path;
+
+            var mountOptions = GetMountOptionsForPath(realPath);
+            if (mountOptions.Contains("compress", StringComparison.OrdinalIgnoreCase))
+            {
+                _logger.LogWarning(
+                    "Cannot safely decompress {file}: filesystem mounted with compression ({opts}). " +
+                    "Remount with 'compress=no' before running decompression.",
+                    realPath, mountOptions);
+                return false;
+            }
+
+            if (!IsBtrfsCompressedFile(realPath))
+            {
+                _logger.LogTrace("File {file} is not compressed, skipping decompression.", realPath);
+                return true;
+            }
+
+            (bool flowControl, bool value) = FileStreamOpening(realPath, ref fs);
+
+            if (!flowControl)
+            {
+                return value;
+            }
+
+            string fileName = isWine ? "/bin/bash" : "btrfs";
+            string command = isWine ? $"-c \"filesystem defragment -- \"{realPath}\"\"" : $"filesystem defragment -- \"{realPath}\"";
+
+            (bool processControl, bool success) = StartProcessInfo(realPath, fileName, command, out Process? proc, out string stdout);
+            if (!processControl && !success)
+            {
+                return value;
+            }
+
+            if (!string.IsNullOrWhiteSpace(stdout))
+                _logger.LogTrace("btrfs defragment output for {file}: {stdout}", realPath, stdout.Trim());
+
+            _logger.LogInformation("Decompressed btrfs file successfully: {file}", realPath);
+
+            return true;
+        }
+        catch (Exception ex)
+        {
+            _logger.LogWarning(ex, "Error rewriting {file} for Btrfs decompression", path);
+            return false;
+        }
+    }
+
+    /// <summary>
+    /// Decompress an NTFS File
+    /// </summary>
+    /// <param name="path">Path of the compressed file</param>
+    /// <returns>Decompressing state</returns>
+    private bool DecompressWOFFile(string path, out FileStream fs)
+    {
+        fs = new FileStream(path, FileMode.Open, FileAccess.ReadWrite, FileShare.Read);
+        var handle = fs.SafeFileHandle;
+
+        if (handle.IsInvalid)
+        {
+            _logger.LogWarning("Invalid handle: {file}", path);
+            return false;
+        }
+
+        if (!DeviceIoControl(handle, FSCTL_DELETE_EXTERNAL_BACKING,
+                             IntPtr.Zero, 0, IntPtr.Zero, 0,
+                             out _, IntPtr.Zero))
+        {
+            int err = Marshal.GetLastWin32Error();
+
+            if (err == 342)
+            {
+                _logger.LogTrace("File {file} not externally backed (already decompressed)", path);
             }
             else
             {
-                    var ret = WofSetFileDataLocation(hFile, WOF_PROVIDER_FILE, efInfoPtr, length);
+                _logger.LogWarning("DeviceIoControl failed for {file} with Win32 error {err}", path, err);
-                    if (!(ret == 0 || ret == unchecked((int)0x80070158)))
+            }
+        }
+        else
+        {
+            _logger.LogTrace("Successfully decompressed NTFS file {file}", path);
+        }
+
+        return true;
+    }
+
+    /// <summary>
+    /// Converts to Linux Path if its using Wine (diferent pathing system in Wine)
+    /// </summary>
+    /// <param name="path">Path that has to be converted</param>
+    /// <param name="isWine">Extra check if using the wine enviroment</param>
+    /// <returns>Converted path to be used in Linux</returns>
+    private string ToLinuxPathIfWine(string path, bool isWine)
+    {
+        if (!IsProbablyWine() && !isWine)
+            return path;
+
+        string linuxPath = path;
+        if (path.StartsWith("Z:\\", StringComparison.OrdinalIgnoreCase)) 
+            linuxPath = "/" + path[3..].Replace('\\', '/');
+        else if (path.StartsWith("C:\\", StringComparison.OrdinalIgnoreCase))
+            linuxPath = Path.Combine(Environment.GetEnvironmentVariable("HOME") ?? "/home", path[3..].Replace('\\', '/')).Replace('\\', '/');
+
+        _logger.LogTrace("Detected Wine environment. Converted path for compression: {realPath}", linuxPath);
+        return linuxPath;
+    }
+
+    /// <summary>
+    /// Compress an WOF File
+    /// </summary>
+    /// <param name="path">Path of the decompressed/normal file</param>
+    /// <returns>Compessing state</returns>
+    private bool WOFCompressFile(string path)
+    {
+        FileStream? fs = null;
+        int size = Marshal.SizeOf<WOF_FILE_COMPRESSION_INFO_V1>();
+        IntPtr efInfoPtr = Marshal.AllocHGlobal(size);
+
+        try
+        {
+            Marshal.StructureToPtr(_efInfo, efInfoPtr, fDeleteOld: false);
+            ulong length = (ulong)size;
+
+            (bool flowControl, bool value) = FileStreamOpening(path, ref fs);
+
+            if (!flowControl)
+            {
+                return value;
+            }
+
+            if (fs == null)
+            {
+                _logger.LogWarning("Failed to open {file} for compression; skipping", path);
+                return false;
+            }
+
+            var handle = fs.SafeFileHandle;
+
+            if (handle.IsInvalid)
+            {
+                _logger.LogWarning("Invalid file handle for {file}", path);
+                return false;
+            }
+
+            int ret = WofSetFileDataLocation(handle, WOF_PROVIDER_FILE, efInfoPtr, length);
+
+            // 0x80070158 is WOF error whenever compression fails in an non-fatal way.
+            if (ret != 0 && ret != unchecked((int)0x80070158))
             {
                 _logger.LogWarning("Failed to compact {file}: {ret}", path, ret.ToString("X"));
+                return false;
             }
+
+            return true;
         }
+        catch (DllNotFoundException ex)
+        {
+            _logger.LogTrace(ex, "WofUtil.dll not available, this DLL is needed for compression; skipping NTFS compaction for {file}", path);
+            return false;
         }
+        catch (EntryPointNotFoundException ex)
+        {
+            _logger.LogTrace(ex, "WOF entrypoint missing (Wine/older OS); skipping NTFS compaction for {file}", path);
+            return false;
         }
         catch (Exception ex)
         {
             _logger.LogWarning(ex, "Error compacting file {path}", path);
+            return false;
         }
         finally
+        {
+            fs?.Dispose();
+
+            if (efInfoPtr != IntPtr.Zero)
             {
                 Marshal.FreeHGlobal(efInfoPtr);
             }
         }
-
-    private struct WOF_FILE_COMPRESSION_INFO_V1
-    {
-        public CompressionAlgorithm Algorithm;
-        public ulong Flags;
     }
 
+    /// <summary>
+    /// Checks if an File is compacted with WOF compression
+    /// </summary>
+    /// <param name="path">Path of the file</param>
+    /// <returns>State of the file</returns>
+    private static bool IsWOFCompactedFile(string filePath)
+    {
+        try
+        {
+            uint buf = (uint)Marshal.SizeOf<WOF_FILE_COMPRESSION_INFO_V1>();
+            int result = WofIsExternalFile(filePath, out int isExternal, out _, out var info, ref buf);
+            if (result != 0 || isExternal == 0)
+                return false;
+
+            return info.Algorithm == (int)CompressionAlgorithm.XPRESS8K
+                || info.Algorithm == (int)CompressionAlgorithm.XPRESS4K
+                || info.Algorithm == (int)CompressionAlgorithm.XPRESS16K
+                || info.Algorithm == (int)CompressionAlgorithm.LZX
+                || info.Algorithm == (int)CompressionAlgorithm.LZNT1
+                || info.Algorithm == (int)CompressionAlgorithm.NO_COMPRESSION;
+        }
+        catch
+        {
+            return false;
+        }
+    }
+
+    /// <summary>
+    /// Checks if an File is compacted with Btrfs compression
+    /// </summary>
+    /// <param name="path">Path of the file</param>
+    /// <returns>State of the file</returns>
+    private bool IsBtrfsCompressedFile(string path)
+    {
+        try
+        {
+            bool isWine = _dalamudUtilService?.IsWine ?? false;
+            string realPath = isWine ? ToLinuxPathIfWine(path, isWine) : path;
+
+            var fi = new FileInfo(realPath);
+
+            if (fi == null)
+            {
+                _logger.LogWarning("Failed to open {file} for checking on compression; skipping", realPath);
+                return false;
+            }
+
+            string fileName = isWine ? "/bin/bash" : "filefrag";
+            string command = isWine ? $"-c \"filefrag -v '{EscapeSingle(realPath)}'\"" : $"-v \"{realPath}\"";
+            (bool processControl, bool success) = StartProcessInfo(realPath, fileName, command, out Process? proc, out string stdout);
+            if (!processControl && !success)
+            {
+                return success;
+            }
+
+            bool compressed = stdout.Contains("flags: compressed", StringComparison.OrdinalIgnoreCase);
+            _logger.LogTrace("Btrfs compression check for {file}: {compressed}", realPath, compressed);
+            return compressed;
+        }
+        catch (Exception ex)
+        {
+            _logger.LogDebug(ex, "Failed to detect Btrfs compression for {file}", path);
+            return false;
+        }
+    }
+
+    /// <summary>
+    /// Compress an Btrfs File
+    /// </summary>
+    /// <param name="path">Path of the decompressed/normal file</param>
+    /// <returns>Compessing state</returns>
+    private bool BtrfsCompressFile(string path)
+    {
+        FileStream? fs = null;
+
+        try
+        {
+            bool isWine = _dalamudUtilService?.IsWine ?? false;
+            string realPath = isWine ? ToLinuxPathIfWine(path, isWine) : path;
+
+            var fi = new FileInfo(realPath);
+
+            if (fi == null)
+            {
+                _logger.LogWarning("Failed to open {file} for compression; skipping", realPath);
+                return false;
+            }
+
+            if (IsBtrfsCompressedFile(realPath))
+            {
+                _logger.LogTrace("File {file} already compressed (Btrfs), skipping file", realPath);
+                return true;
+            }
+
+            (bool flowControl, bool value) = FileStreamOpening(realPath, ref fs);
+
+            if (!flowControl)
+            {
+                return value;
+            }
+
+            string fileName = isWine ? "/bin/bash" : "btrfs";
+            string command = isWine ? $"-c \"btrfs filesystem defragment -czstd:1 -- \"{realPath}\"\"" : $"btrfs filesystem defragment -czstd:1 -- \"{realPath}\"";
+
+            (bool processControl, bool success) = StartProcessInfo(realPath, fileName, command, out Process? proc, out string stdout);
+            if (!processControl && !success)
+            {
+                return value;
+            }
+
+            if (!string.IsNullOrWhiteSpace(stdout))
+                _logger.LogTrace("btrfs defragment output for {file}: {stdout}", realPath, stdout.Trim());
+
+            _logger.LogInformation("Compressed btrfs file successfully: {file}", realPath);
+
+            return true;
+        }
+        catch (Exception ex)
+        {
+            _logger.LogWarning(ex, "Error running btrfs defragment for {file}", path);
+            return false;
+        }
+    }
+
+
+    /// <summary>
+    /// Trying opening file stream in certain amount of tries.
+    /// </summary>
+    /// <param name="path">Path where the file is located</param>
+    /// <param name="fs">Filestream used for the function</param>
+    /// <returns>State of the filestream opening</returns>
+    private (bool flowControl, bool value) FileStreamOpening(string path, ref FileStream? fs)
+    {
+        for (int attempt = 0; attempt < _maxRetries; attempt++)
+        {
+            try
+            {
+                fs = new FileStream(path, FileMode.Open, FileAccess.ReadWrite, FileShare.Read);
+                break;
+            }
+            catch (IOException)
+            {
+                if (attempt == _maxRetries - 1)
+                {
+                    _logger.LogWarning("File still in use after {attempts} attempts, skipping compression for {file}", _maxRetries, path);
+                    return (flowControl: false, value: false);
+                }
+
+                int delay = 150 * (attempt + 1);
+                _logger.LogTrace("File in use, retrying in {delay}ms for {file}", delay, path);
+                Thread.Sleep(delay);
+            }
+        }
+
+        return (flowControl: true, value: default);
+    }
+
+    /// <summary>
+    /// Starts an process with given Filename and Arguments
+    /// </summary>
+    /// <param name="path">Path you want to use for the process (Compression is using these)</param>
+    /// <param name="fileName">File of the command</param>
+    /// <param name="arguments">Arguments used for the command</param>
+    /// <param name="proc">Returns process of the given command</param>
+    /// <param name="stdout">Returns output of the given command</param>
+    /// <returns>Returns if the process been done succesfully or not</returns>
+    private (bool processControl, bool success) StartProcessInfo(string path, string fileName, string arguments, out Process? proc, out string stdout)
+    {
+        var psi = new ProcessStartInfo
+        {
+            FileName = fileName,
+            Arguments = arguments,
+            RedirectStandardOutput = true,
+            RedirectStandardError = true,
+            UseShellExecute = false,
+            CreateNoWindow = true,
+            WorkingDirectory = "/"
+        };
+        proc = Process.Start(psi);
+
+        if (proc == null)
+        {
+            _logger.LogWarning("Failed to start {arguments} for {file}", arguments, path);
+            stdout = string.Empty;
+            return (processControl: false, success: false);
+        }
+
+        stdout = proc.StandardOutput.ReadToEnd();
+        string stderr = proc.StandardError.ReadToEnd();
+        proc.WaitForExit();
+
+        if (proc.ExitCode != 0 && !string.IsNullOrWhiteSpace(stderr))
+        {
+            _logger.LogTrace("{arguments} exited with code {code}: {stderr}", arguments, proc.ExitCode, stderr);
+            return (processControl: false, success: false);
+        }
+
+        return (processControl: true, success: default);
+    }
+
+    private static string EscapeSingle(string p) => p.Replace("'", "'\\'", StringComparison.Ordinal);
+
     private void EnqueueCompaction(string filePath)
     {
+        // Safe-checks
+        if (string.IsNullOrWhiteSpace(filePath))
+            return;
+
+        if (!_lightlessConfigService.Current.UseCompactor)
+            return;
+
+        if (!File.Exists(filePath))
+            return;
+
         if (!_pendingCompactions.TryAdd(filePath, 0))
+            return;
+
+        bool enqueued = false;
+        try
         {
+            bool isWine = _dalamudUtilService?.IsWine ?? false;
+            var fsType = GetFilesystemType(filePath, isWine);
+
+            // If under Wine, we should skip NTFS because its not Windows but might return NTFS.
+            if (fsType == FilesystemType.NTFS && isWine)
+            {
+                _logger.LogTrace("Skip enqueue (NTFS under Wine) {file}", filePath);
+                return;
+            }
+
+            // Unknown file system should be skipped.
+            if (fsType != FilesystemType.NTFS && fsType != FilesystemType.Btrfs)
+            {
+                _logger.LogTrace("Skip enqueue (unsupported fs) {fs} {file}", fsType, filePath);
                 return;
             }
 
             if (!_compactionQueue.Writer.TryWrite(filePath))
             {
+                _logger.LogTrace("Skip enqueue: compaction channel is closed {file}", filePath);
+                return;
+            }
+
+            enqueued = true;
+            _logger.LogTrace("Queued compaction for {file} (fs={fs})", filePath, fsType);
+        }
+        finally
+        {
+            if (!enqueued)
                 _pendingCompactions.TryRemove(filePath, out _);
-            _logger.LogDebug("Failed to enqueue compaction job for {file}", filePath);
         }
     }
 
@@ -299,14 +790,14 @@ public sealed class FileCompactor : IDisposable
                             return;
                         }
 
-                        if (_dalamudUtilService.IsWine || !_lightlessConfigService.Current.UseCompactor)
+                        if (!_lightlessConfigService.Current.UseCompactor)
                         {
                             continue;
                         }
 
                         if (!File.Exists(filePath))
                         {
-                            _logger.LogTrace("Skipping compaction for missing file {file}", filePath);
+                            _logger.LogTrace("Skip compact (missing) {file}", filePath);
                             continue;
                         }
 
@@ -329,7 +820,39 @@ public sealed class FileCompactor : IDisposable
         }
         catch (OperationCanceledException)
         {
-            // expected during shutdown
+            _logger.LogDebug("Compaction queue cancelled");
         }
     }
+
+    [DllImport("kernel32.dll", SetLastError = true)]
+    private static extern bool DeviceIoControl(SafeFileHandle hDevice, uint dwIoControlCode, IntPtr lpInBuffer, uint nInBufferSize, IntPtr lpOutBuffer, uint nOutBufferSize, out uint lpBytesReturned, IntPtr lpOverlapped);
+
+    [DllImport("kernel32.dll")]
+    private static extern uint GetCompressedFileSizeW([In, MarshalAs(UnmanagedType.LPWStr)] string lpFileName, [Out, MarshalAs(UnmanagedType.U4)] out uint lpFileSizeHigh);
+
+    [DllImport("WofUtil.dll")]
+    private static extern int WofIsExternalFile([MarshalAs(UnmanagedType.LPWStr)] string Filepath, out int IsExternalFile, out uint Provider, out WOF_FILE_COMPRESSION_INFO_V1 Info, ref uint BufferLength);
+
+    [DllImport("WofUtil.dll", SetLastError = true)]
+    private static extern int WofSetFileDataLocation(SafeFileHandle FileHandle, ulong Provider, IntPtr ExternalFileInfo, ulong Length);
+
+    public void Dispose()
+    {
+        _compactionQueue.Writer.TryComplete();
+        _compactionCts.Cancel();
+        try
+        {
+            _compactionWorker.Wait(TimeSpan.FromSeconds(5));
+        }
+        catch 
+        { 
+            //ignore on catch ^^
+        }
+        finally
+        {
+            _compactionCts.Dispose();
+        }
+
+        GC.SuppressFinalize(this);
+    }
 }

LightlessSync/LightlessConfiguration/Models/ServerStorage.cs

@@ -13,5 +13,4 @@ public class ServerStorage
     public bool UseOAuth2 { get; set; } = false;
     public string? OAuthToken { get; set; } = null;
     public HttpTransportType HttpTransportType { get; set; } = HttpTransportType.WebSockets;
-    public bool ForceWebSockets { get; set; } = false;
 }

LightlessSync/UI/SettingsUi.cs

@@ -1227,16 +1227,16 @@ public class SettingsUi : WindowMediatorSubscriberBase
             ImGui.TextUnformatted($"Currently utilized local storage: Calculating...");
         ImGui.TextUnformatted(
             $"Remaining space free on drive: {UiSharedService.ByteToString(_cacheMonitor.FileCacheDriveFree)}");
+
         bool useFileCompactor = _configService.Current.UseCompactor;
-        bool isLinux = _dalamudUtilService.IsWine;
+        if (!useFileCompactor)
-        if (!useFileCompactor && !isLinux)
         {
             UiSharedService.ColorTextWrapped(
                 "Hint: To free up space when using Lightless consider enabling the File Compactor",
                 UIColors.Get("LightlessYellow"));
         }
 
-        if (isLinux || !_cacheMonitor.StorageisNTFS) ImGui.BeginDisabled();
+        if (!_cacheMonitor.StorageIsBtrfs && !_cacheMonitor.StorageisNTFS) ImGui.BeginDisabled();
         if (ImGui.Checkbox("Use file compactor", ref useFileCompactor))
         {
             _configService.Current.UseCompactor = useFileCompactor;
@@ -1281,10 +1281,20 @@ public class SettingsUi : WindowMediatorSubscriberBase
                 UIColors.Get("LightlessYellow"));
         }
 
-        if (isLinux || !_cacheMonitor.StorageisNTFS)
+        if (!_cacheMonitor.StorageIsBtrfs && !_cacheMonitor.StorageisNTFS)
         {
             ImGui.EndDisabled();
-            ImGui.TextUnformatted("The file compactor is only available on Windows and NTFS drives.");
+            ImGui.TextUnformatted("The file compactor is only available on BTRFS and NTFS drives.");
+        }
+
+        if (_cacheMonitor.StorageisNTFS)
+        {
+            ImGui.TextUnformatted("The file compactor is running on NTFS Drive.");
+        }
+
+        if (_cacheMonitor.StorageIsBtrfs)
+        {
+            ImGui.TextUnformatted("The file compactor is running on Btrfs Drive.");
         }
 
         ImGuiHelpers.ScaledDummy(new Vector2(10, 10));
@@ -3113,22 +3123,6 @@ public class SettingsUi : WindowMediatorSubscriberBase
                     UiSharedService.TooltipSeparator
                     + "Note: if the server does not support a specific Transport Type it will fall through to the next automatically: WebSockets > ServerSentEvents > LongPolling");
 
-                if (_dalamudUtilService.IsWine)
-                {
-                    bool forceWebSockets = selectedServer.ForceWebSockets;
-                    if (ImGui.Checkbox("[wine only] Force WebSockets", ref forceWebSockets))
-                    {
-                        selectedServer.ForceWebSockets = forceWebSockets;
-                        _serverConfigurationManager.Save();
-                    }
-
-                    _uiShared.DrawHelpText(
-                        "On wine, Lightless will automatically fall back to ServerSentEvents/LongPolling, even if WebSockets is selected. "
-                        + "WebSockets are known to crash XIV entirely on wine 8.5 shipped with Dalamud. "
-                        + "Only enable this if you are not running wine 8.5." + Environment.NewLine
-                        + "Note: If the issue gets resolved at some point this option will be removed.");
-                }
-
                 ImGuiHelpers.ScaledDummy(5);
 
                 if (ImGui.Checkbox("Use Discord OAuth2 Authentication", ref useOauth))

LightlessSync/Utils/Crypto.cs

@@ -1,16 +1,15 @@
-using System;
+using System.Security.Cryptography;
-using System.Collections.Generic;
-using System.IO;
-using System.Security.Cryptography;
 using System.Text;
 
 namespace LightlessSync.Utils;
 
 public static class Crypto
 {
+    //This buffersize seems to be the best sweetpoint for Linux and Windows
+    private const int _bufferSize = 65536;
 #pragma warning disable SYSLIB0021 // Type or member is obsolete
 
-    private static readonly Dictionary<(string, ushort), string> _hashListPlayersSHA256 = new();
+    private static readonly Dictionary<(string, ushort), string> _hashListPlayersSHA256 = [];
     private static readonly Dictionary<string, string> _hashListSHA256 = new(StringComparer.Ordinal);
     private static readonly SHA256CryptoServiceProvider _sha256CryptoProvider = new();
 
@@ -21,6 +20,26 @@ public static class Crypto
         return BitConverter.ToString(sha1.ComputeHash(stream)).Replace("-", "", StringComparison.Ordinal);
     }
 
+    public static async Task<string> GetFileHashAsync(string filePath, CancellationToken cancellationToken = default)
+    {
+        var stream = new FileStream(filePath, FileMode.Open, FileAccess.Read, FileShare.ReadWrite | FileShare.Delete, bufferSize: _bufferSize, options: FileOptions.Asynchronous);
+        await using (stream.ConfigureAwait(false))
+        {
+            using var sha1 = SHA1.Create();
+
+            var buffer = new byte[8192];
+            int bytesRead;
+            while ((bytesRead = await stream.ReadAsync(buffer, cancellationToken).ConfigureAwait(false)) > 0)
+            {
+                sha1.TransformBlock(buffer, 0, bytesRead, outputBuffer: null, 0);
+            }
+
+            sha1.TransformFinalBlock([], 0, 0);
+
+            return Convert.ToHexString(sha1.Hash!);
+        }
+    }
+
     public static string GetHash256(this (string, ushort) playerToHash)
     {
         if (_hashListPlayersSHA256.TryGetValue(playerToHash, out var hash))

LightlessSync/Utils/FileSystemHelper.cs

@@ -0,0 +1,282 @@
+using Microsoft.Extensions.Logging;
+using System.Collections.Concurrent;
+using System.Diagnostics;
+using System.Runtime.InteropServices;
+
+namespace LightlessSync.Utils
+{
+    public static class FileSystemHelper
+    {
+        public enum FilesystemType
+        {
+            Unknown = 0,
+            NTFS, // Compressable on file level
+            Btrfs, // Compressable on file level
+            Ext4, // Uncompressable
+            Xfs, // Uncompressable
+            Apfs, // Compressable on OS
+            HfsPlus, // Compressable on OS
+            Fat, // Uncompressable
+            Exfat, // Uncompressable
+            Zfs // Compressable, not on file level
+        }
+
+        private const string _mountPath = "/proc/mounts";
+        private const int _defaultBlockSize = 4096;
+        private static readonly Dictionary<string, int> _blockSizeCache = new(StringComparer.OrdinalIgnoreCase);
+        private static readonly ConcurrentDictionary<string, FilesystemType> _filesystemTypeCache = new(StringComparer.OrdinalIgnoreCase);
+
+        public static FilesystemType GetFilesystemType(string filePath, bool isWine = false)
+        {
+            try
+            {
+                string rootPath;
+
+                if (RuntimeInformation.IsOSPlatform(OSPlatform.Windows) && (!IsProbablyWine() || !isWine))
+                {
+                    var info = new FileInfo(filePath);
+                    var dir = info.Directory ?? new DirectoryInfo(filePath);
+                    rootPath = dir.Root.FullName;
+                }
+                else
+                {
+                    rootPath = GetMountPoint(filePath);
+                    if (string.IsNullOrEmpty(rootPath))
+                        rootPath = "/";
+                }
+
+                if (_filesystemTypeCache.TryGetValue(rootPath, out var cachedType))
+                    return cachedType;
+
+                FilesystemType detected;
+
+                if (RuntimeInformation.IsOSPlatform(OSPlatform.Windows) && (!IsProbablyWine() || !isWine))
+                {
+                    var root = new DriveInfo(rootPath);
+                    var format = root.DriveFormat?.ToUpperInvariant() ?? string.Empty;
+
+                    detected = format switch
+                    {
+                        "NTFS" => FilesystemType.NTFS,
+                        "FAT32" => FilesystemType.Fat,
+                        "EXFAT" => FilesystemType.Exfat,
+                        _ => FilesystemType.Unknown
+                    };
+                }
+                else
+                {
+                    detected = GetLinuxFilesystemType(filePath);
+                }
+
+                if (isWine || IsProbablyWine())
+                {
+                    switch (detected)
+                    {
+                        case FilesystemType.NTFS:
+                        case FilesystemType.Unknown:
+                            {
+                                var linuxDetected = GetLinuxFilesystemType(filePath);
+                                if (linuxDetected != FilesystemType.Unknown)
+                                {
+                                    detected = linuxDetected;
+                                }
+
+                                break;
+                            }
+                    }
+                }
+
+                _filesystemTypeCache[rootPath] = detected;
+                return detected;
+            }
+            catch
+            {
+                return FilesystemType.Unknown;
+            }
+        }
+
+        private static string GetMountPoint(string filePath)
+        {
+            try
+            {
+                var path = Path.GetFullPath(filePath);
+                if (!File.Exists(_mountPath)) return "/";
+                var mounts = File.ReadAllLines(_mountPath);
+
+                string bestMount = "/";
+                foreach (var line in mounts)
+                {
+                    var parts = line.Split(' ');
+                    if (parts.Length < 3) continue;
+                    var mountPoint = parts[1].Replace("\\040", " ", StringComparison.Ordinal);
+
+                    string normalizedMount;
+                    try { normalizedMount = Path.GetFullPath(mountPoint); }
+                    catch { normalizedMount = mountPoint; }
+
+                    if (path.StartsWith(normalizedMount, StringComparison.Ordinal) &&
+                        normalizedMount.Length > bestMount.Length)
+                    {
+                        bestMount = normalizedMount;
+                    }
+                }
+
+                return bestMount;
+            }
+            catch
+            {
+                return "/";
+            }
+        }
+
+        public static string GetMountOptionsForPath(string path)
+        {
+            try
+            {
+                var fullPath = Path.GetFullPath(path);
+                var mounts = File.ReadAllLines("/proc/mounts");
+                string bestMount = string.Empty;
+                string mountOptions = string.Empty;
+
+                foreach (var line in mounts)
+                {
+                    var parts = line.Split(' ');
+                    if (parts.Length < 4) continue;
+                    var mountPoint = parts[1].Replace("\\040", " ", StringComparison.Ordinal);
+                    string normalized;
+                    try { normalized = Path.GetFullPath(mountPoint); }
+                    catch { normalized = mountPoint; }
+
+                    if (fullPath.StartsWith(normalized, StringComparison.Ordinal) &&
+                        normalized.Length > bestMount.Length)
+                    {
+                        bestMount = normalized;
+                        mountOptions = parts[3];
+                    }
+                }
+
+                return mountOptions;
+            }
+            catch (Exception ex)
+            {
+                return string.Empty;
+            }
+        }
+
+        private static FilesystemType GetLinuxFilesystemType(string filePath)
+        {
+            try
+            {
+                var mountPoint = GetMountPoint(filePath);
+                var mounts = File.ReadAllLines(_mountPath);
+
+                foreach (var line in mounts)
+                {
+                    var parts = line.Split(' ');
+                    if (parts.Length < 3) continue;
+                    var mount = parts[1].Replace("\\040", " ", StringComparison.Ordinal);
+                    if (string.Equals(mount, mountPoint, StringComparison.Ordinal))
+                    {
+                        var fstype = parts[2].ToLowerInvariant();
+                        return fstype switch
+                        {
+                            "btrfs" => FilesystemType.Btrfs,
+                            "ext4" => FilesystemType.Ext4,
+                            "xfs" => FilesystemType.Xfs,
+                            "zfs" => FilesystemType.Zfs,
+                            "apfs" => FilesystemType.Apfs,
+                            "hfsplus" => FilesystemType.HfsPlus,
+                            _ => FilesystemType.Unknown
+                        };
+                    }
+                }
+
+                return FilesystemType.Unknown;
+            }
+            catch
+            {
+                return FilesystemType.Unknown;
+            }
+        }
+
+        public static int GetBlockSizeForPath(string path, ILogger? logger = null, bool isWine = false)
+        {
+            try
+            {
+                if (string.IsNullOrWhiteSpace(path))
+                    return _defaultBlockSize;
+
+                var fi = new FileInfo(path);
+                if (!fi.Exists)
+                    return _defaultBlockSize;
+
+                var root = fi.Directory?.Root.FullName.ToLowerInvariant() ?? "/";
+                if (_blockSizeCache.TryGetValue(root, out int cached))
+                    return cached;
+
+                if (RuntimeInformation.IsOSPlatform(OSPlatform.Windows) && !isWine)
+                {
+                    int result = GetDiskFreeSpaceW(root,
+                        out uint sectorsPerCluster,
+                        out uint bytesPerSector,
+                        out _,
+                        out _);
+
+                    if (result == 0)
+                    {
+                        logger?.LogWarning("Failed to determine block size for {root}", root);
+                        return _defaultBlockSize;
+                    }
+
+                    int clusterSize = (int)(sectorsPerCluster * bytesPerSector);
+                    _blockSizeCache[root] = clusterSize;
+                    logger?.LogTrace("NTFS cluster size for {root}: {cluster}", root, clusterSize);
+                    return clusterSize;
+                }
+
+                string realPath = fi.FullName;
+                if (isWine && realPath.StartsWith("Z:\\", StringComparison.OrdinalIgnoreCase))
+                {
+                    realPath = "/" + realPath.Substring(3).Replace('\\', '/');
+                }
+
+                var psi = new ProcessStartInfo
+                {
+                    FileName = "/bin/bash",
+                    Arguments = $"-c \"stat -f -c %s '{realPath.Replace("'", "'\\''")}'\"",
+                    RedirectStandardOutput = true,
+                    RedirectStandardError = true,
+                    UseShellExecute = false,
+                    CreateNoWindow = true,
+                    WorkingDirectory = "/"
+                };
+
+                using var proc = Process.Start(psi);
+                string stdout = proc?.StandardOutput.ReadToEnd().Trim() ?? "";
+                proc?.WaitForExit();
+
+                if (int.TryParse(stdout, out int blockSize) && blockSize > 0)
+                {
+                    _blockSizeCache[root] = blockSize;
+                    logger?.LogTrace("Filesystem block size via stat for {root}: {block}", root, blockSize);
+                    return blockSize;
+                }
+
+                logger?.LogTrace("stat did not return valid block size for {file}, output: {out}", fi.FullName, stdout);
+                _blockSizeCache[root] = _defaultBlockSize;
+                return _defaultBlockSize;
+            }
+            catch (Exception ex)
+            {
+                logger?.LogTrace(ex, "Error determining block size for {path}", path);
+                return _defaultBlockSize;
+            }
+        }
+
+        [DllImport("kernel32.dll", SetLastError = true, PreserveSig = true)]
+        private static extern int GetDiskFreeSpaceW([In, MarshalAs(UnmanagedType.LPWStr)] string lpRootPathName, out uint lpSectorsPerCluster, out uint lpBytesPerSector, out uint lpNumberOfFreeClusters, out uint lpTotalNumberOfClusters);
+
+        //Extra check on 
+        public static bool IsProbablyWine() => Environment.GetEnvironmentVariable("WINELOADERNOEXEC") != null || Environment.GetEnvironmentVariable("WINEDLLPATH") != null || Directory.Exists("/proc/self") && File.Exists("/proc/mounts");
+    }
+}

LightlessSync/WebAPI/SignalR/HubFactory.cs

@@ -70,13 +70,6 @@ public class HubFactory : MediatorSubscriberBase
             _ => HttpTransportType.WebSockets | HttpTransportType.ServerSentEvents | HttpTransportType.LongPolling
         };
 
-        if (_isWine && !_serverConfigurationManager.CurrentServer.ForceWebSockets
-            && transportType.HasFlag(HttpTransportType.WebSockets))
-        {
-            Logger.LogDebug("Wine detected, falling back to ServerSentEvents / LongPolling");
-            transportType = HttpTransportType.ServerSentEvents | HttpTransportType.LongPolling;
-        }
-
         Logger.LogDebug("Building new HubConnection using transport {transport}", transportType);
 
         _instance = new HubConnectionBuilder()