fs refactor

go.mod

@@ -30,6 +30,7 @@ require (
 	github.com/knadh/koanf/v2 v2.1.1
 	github.com/labstack/echo-contrib v0.17.1
 	github.com/labstack/echo/v4 v4.12.0
+	github.com/mattetti/filebuffer v1.0.1
 	github.com/nwaples/rardecode/v2 v2.0.0-beta.2
 	github.com/rasky/go-xdr v0.0.0-20170124162913-1a41d1a06c93
 	github.com/ravilushqa/otelgqlgen v0.15.0

go.sum

@@ -398,6 +398,8 @@ github.com/labstack/gommon v0.4.2 h1:F8qTUNXgG1+6WQmqoUWnz8WiEU60mXVVw0P4ht1WRA0
 github.com/labstack/gommon v0.4.2/go.mod h1:QlUFxVM+SNXhDL/Z7YhocGIBYOiwB0mXm1+1bAPHPyU=
 github.com/leodido/go-urn v1.4.0 h1:WT9HwE9SGECu3lg4d/dIA+jxlljEa1/ffXKmRjqdmIQ=
 github.com/leodido/go-urn v1.4.0/go.mod h1:bvxc+MVxLKB4z00jd1z+Dvzr47oO32F/QSNjSBOlFxI=
+github.com/mattetti/filebuffer v1.0.1 h1:gG7pyfnSIZCxdoKq+cPa8T0hhYtD9NxCdI4D7PTjRLM=
+github.com/mattetti/filebuffer v1.0.1/go.mod h1:YdMURNDOttIiruleeVr6f56OrMc+MydEnTcXwtkxNVs=
 github.com/mattn/go-colorable v0.1.13 h1:fFA4WZxdEF4tXPZVKMLwD8oUnCTTo08duU7wxecdEvA=
 github.com/mattn/go-colorable v0.1.13/go.mod h1:7S9/ev0klgBDR4GtXTXX8a3vIGJpMovkB8vQcUbaXHg=
 github.com/mattn/go-isatty v0.0.16/go.mod h1:kYGgaQfpe5nmfYZH+SKPsOc2e4SrIfOl2e/yFXSvRLM=
@@ -543,16 +545,8 @@ github.com/royalcat/ctxio v0.0.0-20240602060200-590d464c39be h1:Ui+Imq1Vk26rfpkL
 github.com/royalcat/ctxio v0.0.0-20240602060200-590d464c39be/go.mod h1:NFNp3OsEMUPYj5LZUFDiyDt+2E6gR/g8JLd0k+y8XWI=
 github.com/royalcat/ctxprogress v0.0.0-20240614113930-3cc5bb935bff h1:KlZaOEZYhCzyNYIp0LcE7MNR2Ar0PJS3eJU6A5mMTpk=
 github.com/royalcat/ctxprogress v0.0.0-20240614113930-3cc5bb935bff/go.mod h1:RcUpbosy/m3bJ3JsVO18MXEbrKRHOHkmYBXigDGekaA=
-github.com/royalcat/kv v0.0.0-20240615090409-961d9afa99b6 h1:rGXhPFpOVLeOO/Da2qxBNZY5yaQdTCGxQV2dUDXXf7U=
-github.com/royalcat/kv v0.0.0-20240615090409-961d9afa99b6/go.mod h1:UB/VwpTut8c3IXLJFvYWFxAAZymk9eBuJRMJmpSpwYU=
-github.com/royalcat/kv v0.0.0-20240617074755-245a773511b7 h1:ZtxuWjMwbFwaj5zcT0VZqvsyViYYzYJkprFe/9p5PUs=
-github.com/royalcat/kv v0.0.0-20240617074755-245a773511b7/go.mod h1:UB/VwpTut8c3IXLJFvYWFxAAZymk9eBuJRMJmpSpwYU=
 github.com/royalcat/kv v0.0.0-20240617101007-c9c746b3916f h1:bG8Pp/YXkpC2eFI7psTiTAL7QTBqHQcP/lEpiqmBXn4=
 github.com/royalcat/kv v0.0.0-20240617101007-c9c746b3916f/go.mod h1:UB/VwpTut8c3IXLJFvYWFxAAZymk9eBuJRMJmpSpwYU=
-github.com/royalcat/kv/kvbadger v0.0.0-20240612224509-6aa0da315950 h1:rKG2P4TNLgA4/Jl7LPayifjcw4txVGVSPkpHVhn3wnw=
-github.com/royalcat/kv/kvbadger v0.0.0-20240612224509-6aa0da315950/go.mod h1:JxgA1VGwbqu+WqdmjmjT0v6KeWoWlN6Y5lesjmphExM=
-github.com/royalcat/kv/kvbadger v0.0.0-20240615090409-961d9afa99b6 h1:/TWa41uAL8Vk0MkvZc03EjA1/bS2otK5q0/+6bSWKJI=
-github.com/royalcat/kv/kvbadger v0.0.0-20240615090409-961d9afa99b6/go.mod h1:JxgA1VGwbqu+WqdmjmjT0v6KeWoWlN6Y5lesjmphExM=
 github.com/royalcat/kv/kvbadger v0.0.0-20240617101007-c9c746b3916f h1:wz3pvg7YJdibZXQRV6B5pVPeDK8bgnuJVnBf7OFtCWI=
 github.com/royalcat/kv/kvbadger v0.0.0-20240617101007-c9c746b3916f/go.mod h1:JxgA1VGwbqu+WqdmjmjT0v6KeWoWlN6Y5lesjmphExM=
 github.com/rs/dnscache v0.0.0-20230804202142-fc85eb664529 h1:18kd+8ZUlt/ARXhljq+14TwAoKa61q6dX8jtwOf6DH8=

pkg/ctxbilly/fs.go

@@ -13,10 +13,6 @@ type Filesystem interface {
 	// it if it already exists. If successful, methods on the returned File can
 	// be used for I/O; the associated file descriptor has mode O_RDWR.
 	Create(ctx context.Context, filename string) (File, error)
-	// Open opens the named file for reading. If successful, methods on the
-	// returned file can be used for reading; the associated file descriptor has
-	// mode O_RDONLY.
-	Open(ctx context.Context, filename string) (File, error)
 	// OpenFile is the generalized open call; most users will use Open or Create
 	// instead. It opens the named file with specified flag (O_RDONLY etc.) and
 	// perm, (0666 etc.) if applicable. If successful, methods on the returned

pkg/ctxbilly/uring.go

@@ -117,10 +117,6 @@ func (fs *UringFS) MkdirAll(ctx context.Context, path string, perm os.FileMode)
 	return os.MkdirAll(dir, perm)
 }
 
-func (fs *UringFS) Open(ctx context.Context, filename string) (File, error) {
-	return fs.OpenFile(ctx, filename, os.O_RDONLY, 0)
-}
-
 func (fs *UringFS) Stat(ctx context.Context, filename string) (os.FileInfo, error) {
 	filename, err := fs.abs(filename)
 	if err != nil {

pkg/ioutils/filebuffer.go

@@ -6,6 +6,7 @@ import (
 	"errors"
 	"io"
 	"os"
+	"sync"
 
 	"github.com/royalcat/ctxio"
 )
@@ -19,6 +20,7 @@ type FileBuffer struct {
 	// index indicates where in the buffer we are at
 	index    int64
 	isClosed bool
+	mu       sync.RWMutex
 }
 
 var _ FileReader = (*FileBuffer)(nil)
@@ -53,14 +55,20 @@ func NewFileBufferFromIoReader(reader io.Reader) (*FileBuffer, error) {
 
 // Bytes returns the bytes available until the end of the buffer.
 func (f *FileBuffer) Bytes() []byte {
+	f.mu.RLock()
+	defer f.mu.RUnlock()
+
 	if f.isClosed || f.index >= int64(f.buff.Len()) {
 		return []byte{}
 	}
-	return f.buff.Bytes()[f.index:]
+	return bytes.Clone(f.buff.Bytes()[f.index:])
 }
 
 // String implements the Stringer interface
 func (f *FileBuffer) String() string {
+	f.mu.RLock()
+	defer f.mu.RUnlock()
+
 	return string(f.buff.Bytes()[f.index:])
 }
 
@@ -76,6 +84,9 @@ func (f *FileBuffer) String() string {
 // that a Reader returning a non-zero number of bytes at the end of the input stream may return
 // either err == EOF or err == nil. The next Read should return 0, EOF.
 func (f *FileBuffer) Read(ctx context.Context, b []byte) (n int, err error) {
+	f.mu.RLock()
+	defer f.mu.RUnlock()
+
 	if f.isClosed {
 		return 0, os.ErrClosed
 	}
@@ -109,6 +120,9 @@ func (f *FileBuffer) Read(ctx context.Context, b []byte) (n int, err error) {
 // ReadAt should not affect nor be affected by the underlying seek offset.
 // Clients of ReadAt can execute parallel ReadAt calls on the same input source.
 func (f *FileBuffer) ReadAt(ctx context.Context, p []byte, off int64) (n int, err error) {
+	f.mu.RLock()
+	defer f.mu.RUnlock()
+
 	if f.isClosed {
 		return 0, os.ErrClosed
 	}
@@ -131,6 +145,9 @@ func (f *FileBuffer) ReadAt(ctx context.Context, p []byte, off int64) (n int, er
 // Write implements io.Writer https://golang.org/pkg/io/#Writer
 // by appending the passed bytes to the buffer unless the buffer is closed or index negative.
 func (f *FileBuffer) Write(ctx context.Context, p []byte) (n int, err error) {
+	f.mu.Lock()
+	defer f.mu.Unlock()
+
 	if f.isClosed {
 		return 0, os.ErrClosed
 	}
@@ -151,6 +168,9 @@ func (f *FileBuffer) Write(ctx context.Context, p []byte) (n int, err error) {
 
 // Seek implements io.Seeker https://golang.org/pkg/io/#Seeker
 func (f *FileBuffer) Seek(offset int64, whence int) (idx int64, err error) {
+	f.mu.Lock()
+	defer f.mu.Unlock()
+
 	if f.isClosed {
 		return 0, os.ErrClosed
 	}
@@ -176,6 +196,9 @@ func (f *FileBuffer) Seek(offset int64, whence int) (idx int64, err error) {
 // Close implements io.Closer https://golang.org/pkg/io/#Closer
 // It closes the buffer, rendering it unusable for I/O. It returns an error, if any.
 func (f *FileBuffer) Close(ctx context.Context) error {
+	f.mu.Lock()
+	defer f.mu.Unlock()
+
 	f.isClosed = true
 	f.buff = nil
 	return nil

src/export/nfs/wrapper.go

@@ -58,22 +58,6 @@ func (*fsWrapper) MkdirAll(ctx context.Context, filename string, perm fs.FileMod
 	return billy.ErrNotSupported
 }
 
-// Open implements billy.Filesystem.
-func (fs *fsWrapper) Open(ctx context.Context, filename string) (nfs.File, error) {
-	ctx, cancel := context.WithTimeout(ctx, fs.timeout)
-	defer cancel()
-
-	file, err := fs.fs.Open(ctx, filename)
-	if err != nil {
-		return nil, billyErr(ctx, err, fs.log)
-	}
-	return &billyFile{
-		name: filename,
-		file: file,
-		log:  fs.log.With("filename", filename),
-	}, nil
-}
-
 // OpenFile implements billy.Filesystem.
 func (fs *fsWrapper) OpenFile(ctx context.Context, filename string, flag int, perm fs.FileMode) (nfs.File, error) {
 	ctx, cancel := context.WithTimeout(ctx, fs.timeout)

src/sources/torrent/daemon.go

@@ -130,13 +130,11 @@ func (s *Daemon) Close(ctx context.Context) error {
 	)...)
 }
 
-func (s *Daemon) LoadTorrent(ctx context.Context, f vfs.File) (*Controller, error) {
+func (s *Daemon) loadTorrent(ctx context.Context, f vfs.File) (*Controller, error) {
 	ctx, span := tracer.Start(ctx, "LoadTorrent")
 	defer span.End()
 	log := s.log
 
-	defer f.Close(ctx)
-
 	stat, err := f.Info()
 	if err != nil {
 		return nil, fmt.Errorf("call stat failed: %w", err)
@@ -274,7 +272,7 @@ func (s *Daemon) loadTorrentFiles(ctx context.Context) error {
 
 			vfile := vfs.NewCtxBillyFile(info, ctxbilly.WrapFile(file))
 
-			_, err = s.LoadTorrent(ctx, vfile)
+			_, err = s.loadTorrent(ctx, vfile)
 			if err != nil {
 				log.Error(ctx, "failed adding torrent", rlog.Error(err))
 			}

src/sources/torrent/fs.go

@@ -5,6 +5,7 @@ import (
 	"fmt"
 	"io"
 	"io/fs"
+	"log/slog"
 	"path"
 	"slices"
 	"strings"
@@ -12,6 +13,7 @@ import (
 	"sync/atomic"
 	"time"
 
+	"git.kmsign.ru/royalcat/tstor/pkg/rlog"
 	"git.kmsign.ru/royalcat/tstor/src/vfs"
 	"github.com/anacrolix/torrent"
 	"go.opentelemetry.io/otel/attribute"
@@ -38,11 +40,15 @@ const shortTimeout = time.Millisecond
 const lowTimeout = time.Second * 5
 
 func (s *Daemon) NewTorrentFs(ctx context.Context, f vfs.File) (vfs.Filesystem, error) {
-	c, err := s.LoadTorrent(ctx, f)
+	c, err := s.loadTorrent(ctx, f)
 	if err != nil {
 		return nil, err
 	}
 
+	if err := f.Close(ctx); err != nil {
+		s.log.Error(ctx, "failed to close file", slog.String("name", f.Name()), rlog.Error(err))
+	}
+
 	return &TorrentFS{
 		name:     f.Name(),
 		Torrent:  c,

src/sources/torrent/storage_dedupe.go

@@ -118,12 +118,12 @@ func (s *fileStorage) dedupeFiles(ctx context.Context, paths []string) (deduped
 
 	srcF, err := os.Open(paths[0])
 	if err != nil {
-		return deduped, err
+		return deduped, fmt.Errorf("error opening file %s: %w", paths[0], err)
 	}
 	defer srcF.Close()
 	srcStat, err := srcF.Stat()
 	if err != nil {
-		return deduped, err
+		return deduped, fmt.Errorf("error stat file %s: %w", paths[0], err)
 	}
 
 	srcFd := int(srcF.Fd())
@@ -133,12 +133,12 @@ func (s *fileStorage) dedupeFiles(ctx context.Context, paths []string) (deduped
 	err = unix.Fstatfs(srcFd, &fsStat)
 	if err != nil {
 		span.RecordError(err)
-		return deduped, err
+		return deduped, fmt.Errorf("error statfs file %s: %w", paths[0], err)
 	}
 
 	srcHash, err := filehash(srcF)
 	if err != nil {
-		return deduped, err
+		return deduped, fmt.Errorf("error hashing file %s: %w", paths[0], err)
 	}
 
 	if int64(fsStat.Bsize) > srcSize { // for btrfs it means file in residing in not deduplicatable metadata
@@ -162,13 +162,13 @@ func (s *fileStorage) dedupeFiles(ctx context.Context, paths []string) (deduped
 
 		destF, err := os.OpenFile(dst, os.O_RDWR, os.ModePerm)
 		if err != nil {
-			return deduped, err
+			return deduped, fmt.Errorf("error opening file %s: %w", dst, err)
 		}
 		defer destF.Close()
 
 		dstHash, err := filehash(destF)
 		if err != nil {
-			return deduped, err
+			return deduped, fmt.Errorf("error hashing file %s: %w", dst, err)
 		}
 
 		if srcHash != dstHash {
@@ -199,7 +199,7 @@ func (s *fileStorage) dedupeFiles(ctx context.Context, paths []string) (deduped
 
 	err = unix.IoctlFileDedupeRange(srcFd, &rng)
 	if err != nil {
-		return deduped, err
+		return deduped, fmt.Errorf("error calling FIDEDUPERANGE: %w", err)
 	}
 
 	for i := range rng.Info {
@@ -223,7 +223,3 @@ func filehash(r io.Reader) ([20]byte, error) {
 
 	return sha1.Sum(buf), nil
 }
-
-func ptr[D any](v D) *D {
-	return &v
-}

src/sources/ytdlp/fs.go

@@ -3,6 +3,7 @@ package ytdlp
 import (
 	"context"
 	"io/fs"
+	"os"
 
 	"git.kmsign.ru/royalcat/tstor/pkg/ctxbilly"
 	"git.kmsign.ru/royalcat/tstor/src/vfs"
@@ -35,7 +36,7 @@ func (s *SourceFS) Open(ctx context.Context, filename string) (vfs.File, error)
 		return nil, err
 	}
 
-	f, err := s.fs.Open(ctx, filename)
+	f, err := s.fs.OpenFile(ctx, filename, os.O_RDONLY, 0)
 	if err != nil {
 		return nil, err
 	}

src/vfs/archive.go

@@ -13,6 +13,7 @@ import (
 
 	"git.kmsign.ru/royalcat/tstor/pkg/ioutils"
 	"github.com/bodgit/sevenzip"
+	"github.com/mattetti/filebuffer"
 	"github.com/nwaples/rardecode/v2"
 	"github.com/royalcat/ctxio"
 )
@@ -174,7 +175,7 @@ func NewArchiveFile(name string, size int64, af archiveFileReaderFactory) *archi
 		size: size,
 		af:   af,
 
-		buffer: ioutils.NewFileBuffer(nil),
+		buffer: filebuffer.New(nil),
 	}
 }
 
@@ -189,7 +190,7 @@ type archiveFile struct {
 
 	offset int64
 	readen int64
-	buffer *ioutils.FileBuffer
+	buffer *filebuffer.Buffer
 }
 
 // Name implements File.
@@ -214,14 +215,7 @@ func (d *archiveFile) IsDir() bool {
 	return false
 }
 
-func (d *archiveFile) Close(ctx context.Context) error {
-	return d.buffer.Close(ctx)
-}
-
 func (d *archiveFile) loadMore(ctx context.Context, to int64) error {
-	d.m.Lock()
-	defer d.m.Unlock()
-
 	if to < d.readen {
 		return nil
 	}
@@ -230,55 +224,68 @@ func (d *archiveFile) loadMore(ctx context.Context, to int64) error {
 	if err != nil {
 		return fmt.Errorf("failed to get file reader: %w", err)
 	}
-	defer reader.Close()
+	defer reader.Close(ctx)
+
 	_, err = d.buffer.Seek(0, io.SeekStart)
 	if err != nil {
-		return fmt.Errorf("failed to seek to start of the file: %w", err)
+		return err
 	}
-	d.readen, err = ctxio.CopyN(ctx, d.buffer, ctxio.WrapIoReader(reader), to+readahead)
+	d.readen, err = ctxio.CopyN(ctx, ctxio.WrapIoWriter(d.buffer), reader, to+readahead)
 	if err != nil && err != io.EOF {
 		return fmt.Errorf("error copying from archive file reader: %w", err)
 	}
 	_, err = d.buffer.Seek(d.offset, io.SeekStart)
 	if err != nil {
-		return fmt.Errorf("failed to seek to start of the file: %w", err)
+		return err
 	}
 
 	return nil
 }
 
 func (d *archiveFile) Read(ctx context.Context, p []byte) (n int, err error) {
+	d.m.Lock()
+	defer d.m.Unlock()
+
 	err = d.loadMore(ctx, d.offset+int64(len(p)))
 	if err != nil {
 		return 0, fmt.Errorf("failed to load more from archive file: %w", err)
 	}
-	n, err = d.buffer.Read(ctx, p)
+	n, err = d.buffer.Read(p)
 	if err != nil && err != io.EOF {
 		return n, fmt.Errorf("failed to read from buffer: %w", err)
 	}
 	d.offset += int64(n)
-	return n, nil
+	return n, err
 }
 
 func (d *archiveFile) ReadAt(ctx context.Context, p []byte, off int64) (n int, err error) {
+	d.m.Lock()
+	defer d.m.Unlock()
+
 	err = d.loadMore(ctx, off+int64(len(p)))
 	if err != nil {
 		return 0, fmt.Errorf("failed to load more from archive file: %w", err)
 	}
-	n, err = d.buffer.ReadAt(ctx, p, off)
+	n, err = d.buffer.ReadAt(p, off)
 	if err != nil && err != io.EOF {
 		return n, fmt.Errorf("failed to read from buffer: %w", err)
 	}
-	return n, nil
+	return n, err
 }
 
-type archiveFileReaderFactory func(ctx context.Context) (io.ReadCloser, error)
+func (d *archiveFile) Close(ctx context.Context) error {
+	d.m.Lock()
+	defer d.m.Unlock()
+
+	return d.buffer.Close()
+}
+
+type archiveFileReaderFactory func(ctx context.Context) (ctxio.ReadCloser, error)
 
 var _ archiveLoader = ZipLoader
 
 func ZipLoader(ctx context.Context, ctxreader ctxio.ReaderAt, size int64) (map[string]*archiveFile, error) {
 	reader := ctxio.IoReaderAt(ctx, ctxreader)
-
 	zr, err := zip.NewReader(reader, size)
 	if err != nil {
 		return nil, err
@@ -292,7 +299,7 @@ func ZipLoader(ctx context.Context, ctxreader ctxio.ReaderAt, size int64) (map[s
 		}
 
 		i := i
-		af := func(ctx context.Context) (io.ReadCloser, error) {
+		af := func(ctx context.Context) (ctxio.ReadCloser, error) {
 			reader := ctxio.IoReaderAt(ctx, ctxreader)
 
 			zr, err := zip.NewReader(reader, size)
@@ -305,7 +312,7 @@ func ZipLoader(ctx context.Context, ctxreader ctxio.ReaderAt, size int64) (map[s
 				return nil, fmt.Errorf("failed to open file in zip archive: %w", err)
 			}
 
-			return rc, nil
+			return ctxio.WrapIoReadCloser(rc), nil
 		}
 
 		out[AbsPath(zipFile.Name)] = NewArchiveFile(zipFile.Name, zipFile.FileInfo().Size(), af)
@@ -317,8 +324,7 @@ func ZipLoader(ctx context.Context, ctxreader ctxio.ReaderAt, size int64) (map[s
 var _ archiveLoader = SevenZipLoader
 
 func SevenZipLoader(ctx context.Context, ctxreader ctxio.ReaderAt, size int64) (map[string]*archiveFile, error) {
-	reader := ctxio.IoReaderAt(context.Background(), ctxreader)
+	reader := ctxio.IoReaderAt(ctx, ctxreader)
-
 	r, err := sevenzip.NewReader(reader, size)
 	if err != nil {
 		return nil, err
@@ -332,7 +338,7 @@ func SevenZipLoader(ctx context.Context, ctxreader ctxio.ReaderAt, size int64) (
 		}
 
 		i := i
-		af := func(ctx context.Context) (io.ReadCloser, error) {
+		af := func(ctx context.Context) (ctxio.ReadCloser, error) {
 			reader := ctxio.IoReaderAt(ctx, ctxreader)
 			zr, err := sevenzip.NewReader(reader, size)
 			if err != nil {
@@ -344,7 +350,7 @@ func SevenZipLoader(ctx context.Context, ctxreader ctxio.ReaderAt, size int64) (
 				return nil, err
 			}
 
-			return rc, nil
+			return ctxio.WrapIoReadCloser(rc), nil
 		}
 
 		out[AbsPath(f.Name)] = NewArchiveFile(f.Name, f.FileInfo().Size(), af)
@@ -374,7 +380,7 @@ func RarLoader(ctx context.Context, ctxreader ctxio.ReaderAt, size int64) (map[s
 		}
 
 		name := header.Name
-		af := func(ctx context.Context) (io.ReadCloser, error) {
+		af := func(ctx context.Context) (ctxio.ReadCloser, error) {
 			reader := ioutils.WrapIoReadSeeker(ctx, ctxreader, size)
 			r, err := rardecode.NewReader(reader)
 			if err != nil {
@@ -386,7 +392,7 @@ func RarLoader(ctx context.Context, ctxreader ctxio.ReaderAt, size int64) (map[s
 					return nil, err
 				}
 				if header.Name == name {
-					return io.NopCloser(r), nil
+					return ctxio.NopCloser(ctxio.WrapIoReader(r)), nil
 				}
 			}
 			return nil, fmt.Errorf("file with name '%s' not found", name)

src/vfs/ctxbillyfs.go

@@ -3,6 +3,7 @@ package vfs
 import (
 	"context"
 	"io/fs"
+	"os"
 
 	"git.kmsign.ru/royalcat/tstor/pkg/ctxbilly"
 )
@@ -42,7 +43,7 @@ func (c *CtxBillyFs) Open(ctx context.Context, filename string) (File, error) {
 	if err != nil {
 		return nil, err
 	}
-	bf, err := c.fs.Open(ctx, filename)
+	bf, err := c.fs.OpenFile(ctx, filename, os.O_RDONLY, 0)
 	if err != nil {
 		return nil, err
 	}

src/vfs/log.go

@@ -4,6 +4,7 @@ import (
 	"context"
 	"errors"
 	"fmt"
+	"io"
 	"io/fs"
 	"log/slog"
 	"reflect"
@@ -35,7 +36,7 @@ type LogFS struct {
 }
 
 func isLoggableError(err error) bool {
-	return err != nil && !errors.Is(err, fs.ErrNotExist)
+	return err != nil && !errors.Is(err, fs.ErrNotExist) && !errors.Is(err, io.EOF)
 }
 
 var _ Filesystem = (*LogFS)(nil)
@@ -307,7 +308,7 @@ func (f *LogFile) ReadAt(ctx context.Context, p []byte, off int64) (n int, err e
 
 	n, err = f.f.ReadAt(ctx, p, off)
 	if isLoggableError(err) {
-		f.log.Error(ctx, "Failed to read")
+		f.log.Error(ctx, "Failed to read", rlog.Error(err))
 	}
 	return n, err
 }

src/vfs/resolver.go

@@ -118,7 +118,7 @@ func (r *ResolverFS) ReadDir(ctx context.Context, dir string) ([]fs.DirEntry, er
 			if err != nil {
 				return nil, err
 			}
-			defer file.Close(ctx)
+			// it is factory responsibility to close file then needed
 
 			err = func() error {
 				factoryCtx, cancel := subTimeout(ctx)
@@ -208,6 +208,7 @@ func (r *ResolverFS) Type() fs.FileMode {
 
 var _ Filesystem = &ResolverFS{}
 
+// It factory responsobility to close file
 type FsFactory func(ctx context.Context, f File) (Filesystem, error)
 
 func NewResolver(factories map[string]FsFactory) *Resolver {
@@ -306,7 +307,8 @@ PARTS_LOOP:
 		if err != nil {
 			return "", nil, "", fmt.Errorf("error opening filesystem file: %s with error: %w", fsPath, err)
 		}
-		defer fsFile.Close(ctx)
+		// it is factory responsibility to close file then needed
+
 		nestedFs, err := nestFactory(ctx, fsFile)
 		if err != nil {
 			return "", nil, "", fmt.Errorf("error creating filesystem from file: %s with error: %w", fsPath, err)