diff --git a/go.mod b/go.mod
index 6b5e3a2fd..2802a9e18 100644
--- a/go.mod
+++ b/go.mod
@@ -148,7 +148,7 @@ require (
 	github.com/rdleal/intervalst v1.5.0
 	github.com/redis/go-redis/v9 v9.21.0
 	github.com/schollz/progressbar/v3 v3.19.1
-	github.com/seaweedfs/go-fuse/v2 v2.9.3
+	github.com/seaweedfs/go-fuse/v2 v2.9.4-0.20260803074752-bd46d45ccb3b
 	github.com/shirou/gopsutil/v4 v4.26.6
 	github.com/tarantool/go-option v1.1.0
 	github.com/tarantool/go-tarantool/v3 v3.0.0
diff --git a/go.sum b/go.sum
index a2f0226dc..f75ec7bfb 100644
--- a/go.sum
+++ b/go.sum
@@ -1810,6 +1810,10 @@ github.com/seaweedfs/cockroachdb-parser v0.0.0-20260225204133-2f342c5ea564 h1:Tg
 github.com/seaweedfs/cockroachdb-parser v0.0.0-20260225204133-2f342c5ea564/go.mod h1:JSKCh6uCHBz91lQYFYHCyTrSVIPge4SUFVn28iwMNB0=
 github.com/seaweedfs/go-fuse/v2 v2.9.3 h1:rJufGrHImTx7yoGUmetUi+To4LrmTQJROJnBHWt92ic=
 github.com/seaweedfs/go-fuse/v2 v2.9.3/go.mod h1:zABdmWEa6A0bwaBeEOBUeUkGIZlxUhcdv+V1Dcc/U/I=
+github.com/seaweedfs/go-fuse/v2 v2.9.4-0.20260803073934-cb95bfebced6 h1:Kn79NPV77uc3bEat4RWi6vpNYNacYfjXcWBLNv3RZ2A=
+github.com/seaweedfs/go-fuse/v2 v2.9.4-0.20260803073934-cb95bfebced6/go.mod h1:zABdmWEa6A0bwaBeEOBUeUkGIZlxUhcdv+V1Dcc/U/I=
+github.com/seaweedfs/go-fuse/v2 v2.9.4-0.20260803074752-bd46d45ccb3b h1:ECjScJHzIATk8CTdlP+yfPY4W5bLxeoy1Mma8rd0dRA=
+github.com/seaweedfs/go-fuse/v2 v2.9.4-0.20260803074752-bd46d45ccb3b/go.mod h1:zABdmWEa6A0bwaBeEOBUeUkGIZlxUhcdv+V1Dcc/U/I=
 github.com/seaweedfs/goexif v1.0.3 h1:ve/OjI7dxPW8X9YQsv3JuVMaxEyF9Rvfd04ouL+Bz30=
 github.com/seaweedfs/goexif v1.0.3/go.mod h1:Oni780Z236sXpIQzk1XoJlTwqrJ02smEin9zQeff7Fk=
 github.com/seaweedfs/raft v1.2.0 h1:Ez4Hw9ifBbTT7wg54DvGHBjw1vRlTb4roH0TKl0Oj9Y=
diff --git a/weed/mount/posix_file_lock.go b/weed/mount/posix_file_lock.go
index abe5f6fd9..425083f5e 100644
--- a/weed/mount/posix_file_lock.go
+++ b/weed/mount/posix_file_lock.go
@@ -4,7 +4,6 @@ import (
 	"math"
 	"sort"
 	"sync"
-	"syscall"
 
 	"github.com/seaweedfs/go-fuse/v2/fuse"
 )
@@ -13,7 +12,7 @@ import (
 type lockRange struct {
 	Start uint64 // inclusive byte offset
 	End   uint64 // inclusive; math.MaxUint64 means "to EOF"
-	Typ   uint32 // syscall.F_RDLCK or syscall.F_WRLCK
+	Typ   uint32 // f_RDLCK or f_WRLCK
 	Owner uint64 // FUSE lock owner (from LkIn.Owner)
 	Pid   uint32 // PID of lock holder (for GetLk reporting)
 	// flock and fcntl locks have different ownership and close semantics.
@@ -127,7 +126,7 @@ func findConflict(locks []lockRange, proposed lockRange) (lockRange, bool) {
 		if !rangesOverlap(h.Start, h.End, proposed.Start, proposed.End) {
 			continue
 		}
-		if h.Typ == syscall.F_RDLCK && proposed.Typ == syscall.F_RDLCK {
+		if h.Typ == f_RDLCK && proposed.Typ == f_RDLCK {
 			continue
 		}
 		return h, true
@@ -304,7 +303,7 @@ func (plt *PosixLockTable) GetLk(inode uint64, proposed lockRange, out *fuse.LkO
 	for {
 		il := plt.getInodeLocks(inode)
 		if il == nil {
-			out.Lk.Typ = syscall.F_UNLCK
+			out.Lk.Typ = f_UNLCK
 			return
 		}
 		il.mu.Lock()
@@ -324,7 +323,7 @@ func (plt *PosixLockTable) GetLk(inode uint64, proposed lockRange, out *fuse.LkO
 			out.Lk.Typ = conflict.Typ
 			out.Lk.Pid = conflict.Pid
 		} else {
-			out.Lk.Typ = syscall.F_UNLCK
+			out.Lk.Typ = f_UNLCK
 		}
 		return
 	}
@@ -334,7 +333,7 @@ func (plt *PosixLockTable) GetLk(inode uint64, proposed lockRange, out *fuse.LkO
 // For unlock (F_UNLCK): removes locks in the given range for the owner.
 // For lock: returns fuse.EAGAIN if a conflict exists, fuse.OK on success.
 func (plt *PosixLockTable) SetLk(inode uint64, lk lockRange) fuse.Status {
-	if lk.Typ == syscall.F_UNLCK {
+	if lk.Typ == f_UNLCK {
 		il := plt.getInodeLocks(inode)
 		if il == nil {
 			return fuse.OK
@@ -376,7 +375,7 @@ func (plt *PosixLockTable) SetLk(inode uint64, lk lockRange) fuse.Status {
 // SetLkw attempts a blocking lock. It waits until the lock can be acquired
 // or the cancel channel is closed.
 func (plt *PosixLockTable) SetLkw(inode uint64, lk lockRange, cancel <-chan struct{}) fuse.Status {
-	if lk.Typ == syscall.F_UNLCK {
+	if lk.Typ == f_UNLCK {
 		return plt.SetLk(inode, lk)
 	}
 
diff --git a/weed/mount/syscall_shim_unix.go b/weed/mount/syscall_shim_unix.go
new file mode 100644
index 000000000..acb5f1d77
--- /dev/null
+++ b/weed/mount/syscall_shim_unix.go
@@ -0,0 +1,19 @@
+//go:build !windows
+
+package mount
+
+import (
+	"syscall"
+
+	sys "golang.org/x/sys/unix"
+)
+
+const (
+	f_RDLCK   = syscall.F_RDLCK
+	f_WRLCK   = syscall.F_WRLCK
+	f_UNLCK   = syscall.F_UNLCK
+	o_ACCMODE = syscall.O_ACCMODE
+
+	xattr_CREATE  = sys.XATTR_CREATE
+	xattr_REPLACE = sys.XATTR_REPLACE
+)
diff --git a/weed/mount/syscall_shim_windows.go b/weed/mount/syscall_shim_windows.go
new file mode 100644
index 000000000..aa4e29b53
--- /dev/null
+++ b/weed/mount/syscall_shim_windows.go
@@ -0,0 +1,14 @@
+package mount
+
+// Windows has no fcntl lock types and no access-mode mask. The Linux values
+// stand in: nothing on Windows feeds these, and the lock table only ever
+// compares them against each other.
+const (
+	f_RDLCK   = 0
+	f_WRLCK   = 1
+	f_UNLCK   = 2
+	o_ACCMODE = 0x3
+
+	xattr_CREATE  = 1
+	xattr_REPLACE = 2
+)
diff --git a/weed/mount/weedfs_access.go b/weed/mount/weedfs_access.go
index 90890d823..27fa83132 100644
--- a/weed/mount/weedfs_access.go
+++ b/weed/mount/weedfs_access.go
@@ -155,7 +155,7 @@ func checkStickyBit(dirMode, dirUid, targetUid, callerUid uint32) fuse.Status {
 
 // openFlagsToAccessMask converts open(2) flags to an access permission mask.
 func openFlagsToAccessMask(flags uint32) uint32 {
-	switch flags & uint32(syscall.O_ACCMODE) {
+	switch flags & uint32(o_ACCMODE) {
 	case syscall.O_WRONLY:
 		return fuse.W_OK
 	case syscall.O_RDWR:
diff --git a/weed/mount/weedfs_attr_windows.go b/weed/mount/weedfs_attr_windows.go
new file mode 100644
index 000000000..044cc5fff
--- /dev/null
+++ b/weed/mount/weedfs_attr_windows.go
@@ -0,0 +1,8 @@
+package mount
+
+import (
+	"github.com/seaweedfs/go-fuse/v2/fuse"
+)
+
+func setBlksize(out *fuse.Attr, size uint32) {
+}
diff --git a/weed/mount/weedfs_file_lock.go b/weed/mount/weedfs_file_lock.go
index 0e67d2fd5..b593bf72a 100644
--- a/weed/mount/weedfs_file_lock.go
+++ b/weed/mount/weedfs_file_lock.go
@@ -1,8 +1,6 @@
 package mount
 
 import (
-	"syscall"
-
 	"github.com/seaweedfs/go-fuse/v2/fuse"
 )
 
@@ -56,7 +54,7 @@ func (wfs *WFS) SetLkw(cancel <-chan struct{}, in *fuse.LkIn) fuse.Status {
 		Pid:     in.Lk.Pid,
 		IsFlock: in.LkFlags&fuse.FUSE_LK_FLOCK != 0,
 	}
-	if lk.Typ == syscall.F_UNLCK {
+	if lk.Typ == f_UNLCK {
 		return wfs.posixLocks.SetLk(in.NodeId, lk)
 	}
 	return wfs.posixLocks.SetLkw(in.NodeId, lk, cancel)
diff --git a/weed/mount/weedfs_posix_lock_routed.go b/weed/mount/weedfs_posix_lock_routed.go
index 502ec8f3b..17c47b4b3 100644
--- a/weed/mount/weedfs_posix_lock_routed.go
+++ b/weed/mount/weedfs_posix_lock_routed.go
@@ -6,7 +6,6 @@ import (
 	"encoding/hex"
 	"math/rand/v2"
 	"sync"
-	"syscall"
 	"time"
 
 	"github.com/seaweedfs/go-fuse/v2/fuse"
@@ -103,9 +102,9 @@ func (wfs *WFS) posixLockKeyForInode(inode uint64) (string, bool) {
 
 func posixLockTypeToWire(typ uint32) uint32 {
 	switch typ {
-	case syscall.F_RDLCK:
+	case f_RDLCK:
 		return posixlock.Read
-	case syscall.F_WRLCK:
+	case f_WRLCK:
 		return posixlock.Write
 	default:
 		return posixlock.Unlock
@@ -115,11 +114,11 @@ func posixLockTypeToWire(typ uint32) uint32 {
 func posixLockTypeFromWire(typ uint32) uint32 {
 	switch typ {
 	case posixlock.Read:
-		return syscall.F_RDLCK
+		return f_RDLCK
 	case posixlock.Write:
-		return syscall.F_WRLCK
+		return f_WRLCK
 	default:
-		return syscall.F_UNLCK
+		return f_UNLCK
 	}
 }
 
@@ -186,7 +185,7 @@ func (wfs *WFS) routedGetLk(cancel <-chan struct{}, in *fuse.LkIn, out *fuse.LkO
 		out.Lk.Start, out.Lk.End, out.Lk.Pid = c.GetStart(), c.GetEnd(), c.GetPid()
 		out.Lk.Typ = posixLockTypeFromWire(c.GetType())
 	} else {
-		out.Lk.Typ = syscall.F_UNLCK
+		out.Lk.Typ = f_UNLCK
 	}
 	return fuse.OK
 }
diff --git a/weed/mount/weedfs_xattr.go b/weed/mount/weedfs_xattr.go
index 8ae6eb6d5..a042c0e00 100644
--- a/weed/mount/weedfs_xattr.go
+++ b/weed/mount/weedfs_xattr.go
@@ -8,7 +8,6 @@ import (
 	"syscall"
 
 	"github.com/seaweedfs/go-fuse/v2/fuse"
-	sys "golang.org/x/sys/unix"
 )
 
 const (
@@ -123,11 +122,11 @@ func (wfs *WFS) SetXAttr(cancel <-chan struct{}, input *fuse.SetXAttrIn, attr st
 	}
 	_, exists := entry.Extended[XATTR_PREFIX+attr]
 	switch input.Flags {
-	case sys.XATTR_CREATE:
+	case xattr_CREATE:
 		if exists {
 			return fuse.Status(syscall.EEXIST)
 		}
-	case sys.XATTR_REPLACE:
+	case xattr_REPLACE:
 		if !exists {
 			return fuse.ENODATA
 		}