lib/model, lib/config: Refactor folder health/error handling (fixes #4445, fixes #4451)

GitHub-Pull-Request: https://github.com/syncthing/syncthing/pull/4455
LGTM: AudriusButkevicius, calmh

lib/config/folderconfiguration.go

@@ -7,6 +7,7 @@
 package config
 
 import (
+	"errors"
 	"fmt"
 	"runtime"
 
@@ -14,6 +15,11 @@ import (
 	"github.com/syncthing/syncthing/lib/protocol"
 )
 
+var (
+	errPathMissing   = errors.New("folder path missing")
+	errMarkerMissing = errors.New("folder marker missing")
+)
+
 type FolderConfiguration struct {
 	ID                    string                      `xml:"id,attr" json:"id"`
 	Label                 string                      `xml:"label,attr" json:"label"`
@@ -82,32 +88,44 @@ func (f FolderConfiguration) Filesystem() fs.Filesystem {
 }
 
 func (f *FolderConfiguration) CreateMarker() error {
-	if !f.HasMarker() {
-		permBits := fs.FileMode(0777)
-		if runtime.GOOS == "windows" {
-			// Windows has no umask so we must chose a safer set of bits to
-			// begin with.
-			permBits = 0700
-		}
-		fs := f.Filesystem()
-		err := fs.Mkdir(".stfolder", permBits)
-		if err != nil {
-			return err
-		}
-		if dir, err := fs.Open("."); err != nil {
-			l.Debugln("folder marker: open . failed:", err)
-		} else if err := dir.Sync(); err != nil {
-			l.Debugln("folder marker: fsync . failed:", err)
-		}
-		fs.Hide(".stfolder")
+	if err := f.CheckPath(); err != errMarkerMissing {
+		return err
 	}
 
+	permBits := fs.FileMode(0777)
+	if runtime.GOOS == "windows" {
+		// Windows has no umask so we must chose a safer set of bits to
+		// begin with.
+		permBits = 0700
+	}
+	fs := f.Filesystem()
+	err := fs.Mkdir(".stfolder", permBits)
+	if err != nil {
+		return err
+	}
+	if dir, err := fs.Open("."); err != nil {
+		l.Debugln("folder marker: open . failed:", err)
+	} else if err := dir.Sync(); err != nil {
+		l.Debugln("folder marker: fsync . failed:", err)
+	}
+	fs.Hide(".stfolder")
+
 	return nil
 }
 
-func (f *FolderConfiguration) HasMarker() bool {
-	_, err := f.Filesystem().Stat(".stfolder")
-	return err == nil
+// CheckPath returns nil if the folder root exists and contains the marker file
+func (f *FolderConfiguration) CheckPath() error {
+	fi, err := f.Filesystem().Stat(".")
+	if err != nil || !fi.IsDir() {
+		return errPathMissing
+	}
+
+	_, err = f.Filesystem().Stat(".stfolder")
+	if err != nil {
+		return errMarkerMissing
+	}
+
+	return nil
 }
 
 func (f *FolderConfiguration) CreateRoot() (err error) {
@@ -184,3 +202,7 @@ func (l FolderDeviceConfigurationList) Swap(a, b int) {
 func (l FolderDeviceConfigurationList) Len() int {
 	return len(l)
 }
+
+func (f *FolderConfiguration) CheckFreeSpace() (err error) {
+	return checkFreeSpace(f.MinDiskFree, f.Filesystem())
+}

lib/config/size.go

@@ -10,6 +10,8 @@ import (
 	"fmt"
 	"strconv"
 	"strings"
+
+	"github.com/syncthing/syncthing/lib/fs"
 )
 
 type Size struct {
@@ -73,3 +75,24 @@ func (s Size) String() string {
 func (Size) ParseDefault(s string) (interface{}, error) {
 	return ParseSize(s)
 }
+
+func checkFreeSpace(req Size, fs fs.Filesystem) error {
+	val := req.BaseValue()
+	if val <= 0 {
+		return nil
+	}
+
+	usage, err := fs.Usage(".")
+	if req.Percentage() {
+		freePct := (float64(usage.Free) / float64(usage.Total)) * 100
+		if err == nil && freePct < val {
+			return fmt.Errorf("insufficient space in %v %v: %f %% < %v", fs.Type(), fs.URI(), freePct, req)
+		}
+	} else {
+		if err == nil && float64(usage.Free) < val {
+			return fmt.Errorf("insufficient space in %v %v: %v < %v", fs.Type(), fs.URI(), usage.Free, req)
+		}
+	}
+
+	return nil
+}

lib/config/wrapper.go

@@ -8,9 +8,11 @@ package config
 
 import (
 	"os"
+	"path/filepath"
 	"sync/atomic"
 
 	"github.com/syncthing/syncthing/lib/events"
+	"github.com/syncthing/syncthing/lib/fs"
 	"github.com/syncthing/syncthing/lib/osutil"
 	"github.com/syncthing/syncthing/lib/protocol"
 	"github.com/syncthing/syncthing/lib/rand"
@@ -468,3 +470,9 @@ func (w *Wrapper) MyName() string {
 	cfg, _ := w.Device(myID)
 	return cfg.Name
 }
+
+// CheckHomeFreeSpace returns nil if the home disk has the required amount of
+// free space, or if home disk free space checking is disabled.
+func (w *Wrapper) CheckHomeFreeSpace() error {
+	return checkFreeSpace(w.Options().MinHomeDiskFree, fs.NewFilesystem(fs.FilesystemTypeBasic, filepath.Dir(w.ConfigPath())))
+}

lib/model/folder.go

@@ -25,7 +25,7 @@ type folder struct {
 	initialScanFinished chan struct{}
 	watchCancel         context.CancelFunc
 	watchChan           chan []string
-	ignoresUpdated      chan struct{} // The ignores changed, we need to restart watcher
+	restartWatchChan    chan struct{}
 }
 
 func newFolder(model *Model, cfg config.FolderConfiguration) folder {
@@ -43,12 +43,25 @@ func newFolder(model *Model, cfg config.FolderConfiguration) folder {
 	}
 }
 
-func (f *folder) IndexUpdated() {
-}
+func (f *folder) BringToFront(string) {}
+
 func (f *folder) DelayScan(next time.Duration) {
 	f.scan.Delay(next)
 }
 
+func (f *folder) IndexUpdated() {
+}
+
+func (f *folder) IgnoresUpdated() {
+	if f.FSWatcherEnabled {
+		f.scheduleWatchRestart()
+	}
+}
+
+func (f *folder) Jobs() ([]string, []string) {
+	return nil, nil
+}
+
 func (f *folder) Scan(subdirs []string) error {
 	<-f.initialScanFinished
 	return f.scan.Scan(subdirs)
@@ -58,13 +71,34 @@ func (f *folder) Stop() {
 	f.cancel()
 }
 
-func (f *folder) Jobs() ([]string, []string) {
-	return nil, nil
+func (f *folder) BlockStats() map[string]int {
+	return nil
 }
 
-func (f *folder) BringToFront(string) {}
+// CheckHealth checks the folder for common errors, updates the folder state
+// and returns the current folder error, or nil if the folder is healthy.
+func (f *folder) CheckHealth() error {
+	err := f.getHealthError()
+	f.setError(err)
+	return err
+}
+
+func (f *folder) getHealthError() error {
+	// Check for folder errors, with the most serious and specific first and
+	// generic ones like out of space on the home disk later.
+
+	if err := f.CheckPath(); err != nil {
+		return err
+	}
+
+	if err := f.CheckFreeSpace(); err != nil {
+		return err
+	}
+
+	if err := f.model.cfg.CheckHomeFreeSpace(); err != nil {
+		return err
+	}
 
-func (f *folder) BlockStats() map[string]int {
 	return nil
 }
 
@@ -72,7 +106,7 @@ func (f *folder) scanSubdirs(subDirs []string) error {
 	if err := f.model.internalScanFolderSubdirs(f.ctx, f.folderID, subDirs); err != nil {
 		// Potentially sets the error twice, once in the scanner just
 		// by doing a check, and once here, if the error returned is
-		// the same one as returned by CheckFolderHealth, though
+		// the same one as returned by CheckHealth, though
 		// duplicate set is handled by setError.
 		f.setError(err)
 		return err
@@ -97,7 +131,7 @@ func (f *folder) scanTimerFired() {
 	f.scan.Reschedule()
 }
 
-func (f *folder) startWatcher() {
+func (f *folder) startWatch() {
 	ctx, cancel := context.WithCancel(f.ctx)
 	f.model.fmut.RLock()
 	ignores := f.model.folderIgnores[f.folderID]
@@ -113,18 +147,45 @@ func (f *folder) startWatcher() {
 	}
 }
 
-func (f *folder) restartWatcher() {
+func (f *folder) restartWatch() {
 	f.watchCancel()
-	f.startWatcher()
+	f.startWatch()
 	f.Scan(nil)
 }
 
-func (f *folder) IgnoresUpdated() {
+func (f *folder) scheduleWatchRestart() {
 	select {
-	case f.ignoresUpdated <- struct{}{}:
+	case f.restartWatchChan <- struct{}{}:
 	default:
 		// We might be busy doing a pull and thus not reading from this
 		// channel. The channel is 1-buffered, so one notification will be
 		// queued to ensure we recheck after the pull.
 	}
 }
+
+func (f *folder) setError(err error) {
+	_, _, oldErr := f.getState()
+	if (err != nil && oldErr != nil && oldErr.Error() == err.Error()) || (err == nil && oldErr == nil) {
+		return
+	}
+
+	if err != nil {
+		if oldErr == nil {
+			l.Warnf("Error on folder %s: %v", f.Description(), err)
+		} else {
+			l.Infof("Error on folder %s changed: %q -> %q", f.Description(), oldErr, err)
+		}
+	} else {
+		l.Infoln("Cleared error on folder", f.Description())
+	}
+
+	if f.FSWatcherEnabled {
+		if err != nil {
+			f.watchCancel()
+		} else {
+			f.scheduleWatchRestart()
+		}
+	}
+
+	f.stateTracker.setError(err)
+}

lib/model/folderstate.go

@@ -94,49 +94,32 @@ func (s *stateTracker) getState() (current folderState, changed time.Time, err e
 	return
 }
 
-// setError sets the folder state to FolderError with the specified error.
+// setError sets the folder state to FolderError with the specified error or
+// to FolderIdle if the error is nil
 func (s *stateTracker) setError(err error) {
 	s.mut.Lock()
-	if s.current != FolderError || s.err.Error() != err.Error() {
-		eventData := map[string]interface{}{
-			"folder": s.folderID,
-			"to":     FolderError.String(),
-			"from":   s.current.String(),
-			"error":  err.Error(),
-		}
+	defer s.mut.Unlock()
 
-		if !s.changed.IsZero() {
-			eventData["duration"] = time.Since(s.changed).Seconds()
-		}
+	eventData := map[string]interface{}{
+		"folder": s.folderID,
+		"from":   s.current.String(),
+	}
 
+	if err != nil {
+		eventData["error"] = err.Error()
 		s.current = FolderError
-		s.err = err
-		s.changed = time.Now()
-
-		events.Default.Log(events.StateChanged, eventData)
-	}
-	s.mut.Unlock()
-}
-
-// clearError sets the folder state to FolderIdle and clears the error
-func (s *stateTracker) clearError() {
-	s.mut.Lock()
-	if s.current == FolderError {
-		eventData := map[string]interface{}{
-			"folder": s.folderID,
-			"to":     FolderIdle.String(),
-			"from":   s.current.String(),
-		}
-
-		if !s.changed.IsZero() {
-			eventData["duration"] = time.Since(s.changed).Seconds()
-		}
-
+	} else {
 		s.current = FolderIdle
-		s.err = nil
-		s.changed = time.Now()
-
-		events.Default.Log(events.StateChanged, eventData)
 	}
-	s.mut.Unlock()
+
+	eventData["to"] = s.current.String()
+
+	if !s.changed.IsZero() {
+		eventData["duration"] = time.Since(s.changed).Seconds()
+	}
+
+	s.err = err
+	s.changed = time.Now()
+
+	events.Default.Log(events.StateChanged, eventData)
 }

lib/model/model.go

@@ -54,10 +54,10 @@ type service interface {
 	Serve()
 	Stop()
 	BlockStats() map[string]int
+	CheckHealth() error
 
 	getState() (folderState, time.Time, error)
 	setState(state folderState)
-	clearError()
 	setError(err error)
 }
 
@@ -107,14 +107,12 @@ var (
 )
 
 var (
-	errFolderPathMissing   = errors.New("folder path missing")
-	errFolderMarkerMissing = errors.New("folder marker missing")
-	errDeviceUnknown       = errors.New("unknown device")
-	errDevicePaused        = errors.New("device is paused")
-	errDeviceIgnored       = errors.New("device is ignored")
-	errFolderPaused        = errors.New("folder is paused")
-	errFolderMissing       = errors.New("no such folder")
-	errNetworkNotAllowed   = errors.New("network not allowed")
+	errDeviceUnknown     = errors.New("unknown device")
+	errDevicePaused      = errors.New("device is paused")
+	errDeviceIgnored     = errors.New("device is ignored")
+	errFolderPaused      = errors.New("folder is paused")
+	errFolderMissing     = errors.New("no such folder")
+	errNetworkNotAllowed = errors.New("network not allowed")
 )
 
 // NewModel creates and starts a new model. The model starts in read-only mode,
@@ -1361,7 +1359,7 @@ func (m *Model) GetIgnores(folder string) ([]string, []string, error) {
 		}
 	}
 
-	if err := m.checkFolderPath(cfg); err != nil {
+	if err := cfg.CheckPath(); err != nil {
 		return nil, nil, err
 	}
 
@@ -1791,7 +1789,7 @@ func (m *Model) ScanFolders() map[string]error {
 
 				// Potentially sets the error twice, once in the scanner just
 				// by doing a check, and once here, if the error returned is
-				// the same one as returned by CheckFolderHealth, though
+				// the same one as returned by CheckHealth, though
 				// duplicate set is handled by setError.
 				m.fmut.RLock()
 				srv := m.folderRunners[folder]
@@ -1871,16 +1869,13 @@ func (m *Model) internalScanFolderSubdirs(ctx context.Context, folder string, su
 		return errFolderMissing
 	}
 
-	if err := m.CheckFolderHealth(folder); err != nil {
-		runner.setError(err)
-		l.Infof("Stopping folder %s due to error: %s", folderCfg.Description(), err)
+	if err := runner.CheckHealth(); err != nil {
 		return err
 	}
 
 	if err := ignores.Load(".stignore"); err != nil && !fs.IsNotExist(err) {
 		err = fmt.Errorf("loading ignores: %v", err)
 		runner.setError(err)
-		l.Infof("Stopping folder %s due to error: %s", folderCfg.Description(), err)
 		return err
 	}
 
@@ -1914,7 +1909,7 @@ func (m *Model) internalScanFolderSubdirs(ctx context.Context, folder string, su
 		// The error we get here is likely an OS level error, which might not be
 		// as readable as our health check errors. Check if we can get a health
 		// check error first, and use that if it's available.
-		if ferr := m.CheckFolderHealth(folder); ferr != nil {
+		if ferr := runner.CheckHealth(); ferr != nil {
 			err = ferr
 		}
 		runner.setError(err)
@@ -1926,8 +1921,8 @@ func (m *Model) internalScanFolderSubdirs(ctx context.Context, folder string, su
 
 	for f := range fchan {
 		if len(batch) == maxBatchSizeFiles || batchSizeBytes > maxBatchSizeBytes {
-			if err := m.CheckFolderHealth(folder); err != nil {
-				l.Infof("Stopping folder %s mid-scan due to folder error: %s", folderCfg.Description(), err)
+			if err := runner.CheckHealth(); err != nil {
+				l.Debugln("Stopping scan of folder %s due to: %s", folderCfg.Description(), err)
 				return err
 			}
 			m.updateLocalsFromScanning(folder, batch)
@@ -1938,8 +1933,8 @@ func (m *Model) internalScanFolderSubdirs(ctx context.Context, folder string, su
 		batchSizeBytes += f.ProtoSize()
 	}
 
-	if err := m.CheckFolderHealth(folder); err != nil {
-		l.Infof("Stopping folder %s mid-scan due to folder error: %s", folderCfg.Description(), err)
+	if err := runner.CheckHealth(); err != nil {
+		l.Debugln("Stopping scan of folder %s due to: %s", folderCfg.Description(), err)
 		return err
 	} else if len(batch) > 0 {
 		m.updateLocalsFromScanning(folder, batch)
@@ -1961,7 +1956,7 @@ func (m *Model) internalScanFolderSubdirs(ctx context.Context, folder string, su
 		fset.WithPrefixedHaveTruncated(protocol.LocalDeviceID, sub, func(fi db.FileIntf) bool {
 			f := fi.(db.FileInfoTruncated)
 			if len(batch) == maxBatchSizeFiles || batchSizeBytes > maxBatchSizeBytes {
-				if err := m.CheckFolderHealth(folder); err != nil {
+				if err := runner.CheckHealth(); err != nil {
 					iterError = err
 					return false
 				}
@@ -2020,13 +2015,13 @@ func (m *Model) internalScanFolderSubdirs(ctx context.Context, folder string, su
 		})
 
 		if iterError != nil {
-			l.Infof("Stopping folder %s mid-scan due to folder error: %s", folderCfg.Description(), iterError)
+			l.Debugln("Stopping scan of folder %s due to: %s", folderCfg.Description(), err)
 			return iterError
 		}
 	}
 
-	if err := m.CheckFolderHealth(folder); err != nil {
-		l.Infof("Stopping folder %s mid-scan due to folder error: %s", folderCfg.Description(), err)
+	if err := runner.CheckHealth(); err != nil {
+		l.Debugln("Stopping scan of folder %s due to: %s", folderCfg.Description(), err)
 		return err
 	} else if len(batch) > 0 {
 		m.updateLocalsFromScanning(folder, batch)
@@ -2344,112 +2339,6 @@ func (m *Model) BringToFront(folder, file string) {
 	}
 }
 
-// CheckFolderHealth checks the folder for common errors and returns the
-// current folder error, or nil if the folder is healthy.
-func (m *Model) CheckFolderHealth(id string) error {
-	folder, ok := m.cfg.Folders()[id]
-	if !ok {
-		return errFolderMissing
-	}
-
-	// Check for folder errors, with the most serious and specific first and
-	// generic ones like out of space on the home disk later. Note the
-	// inverted error flow (err==nil checks) here.
-
-	err := m.checkFolderPath(folder)
-	if err == nil {
-		err = m.checkFolderFreeSpace(folder)
-	}
-	if err == nil {
-		err = m.checkHomeDiskFree()
-	}
-
-	// Set or clear the error on the runner, which also does logging and
-	// generates events and stuff.
-	m.runnerExchangeError(folder, err)
-
-	return err
-}
-
-// checkFolderPath returns nil if the folder path exists and has the marker file.
-func (m *Model) checkFolderPath(folder config.FolderConfiguration) error {
-	fs := folder.Filesystem()
-
-	if fi, err := fs.Stat("."); err != nil || !fi.IsDir() {
-		return errFolderPathMissing
-	}
-
-	if !folder.HasMarker() {
-		return errFolderMarkerMissing
-	}
-
-	return nil
-}
-
-// checkFolderFreeSpace returns nil if the folder has the required amount of
-// free space, or if folder free space checking is disabled.
-func (m *Model) checkFolderFreeSpace(folder config.FolderConfiguration) error {
-	return m.checkFreeSpace(folder.MinDiskFree, folder.Filesystem())
-}
-
-// checkHomeDiskFree returns nil if the home disk has the required amount of
-// free space, or if home disk free space checking is disabled.
-func (m *Model) checkHomeDiskFree() error {
-	fs := fs.NewFilesystem(fs.FilesystemTypeBasic, filepath.Dir(m.cfg.ConfigPath()))
-	return m.checkFreeSpace(m.cfg.Options().MinHomeDiskFree, fs)
-}
-
-func (m *Model) checkFreeSpace(req config.Size, fs fs.Filesystem) error {
-	val := req.BaseValue()
-	if val <= 0 {
-		return nil
-	}
-
-	usage, err := fs.Usage(".")
-	if req.Percentage() {
-		freePct := (float64(usage.Free) / float64(usage.Total)) * 100
-		if err == nil && freePct < val {
-			return fmt.Errorf("insufficient space in %v %v: %f %% < %v", fs.Type(), fs.URI(), freePct, req)
-		}
-	} else {
-		if err == nil && float64(usage.Free) < val {
-			return fmt.Errorf("insufficient space in %v %v: %v < %v", fs.Type(), fs.URI(), usage.Free, req)
-		}
-	}
-
-	return nil
-}
-
-// runnerExchangeError sets the given error (which way be nil) on the folder
-// runner. If the error differs from any previous error, logging and events
-// happen.
-func (m *Model) runnerExchangeError(folder config.FolderConfiguration, err error) {
-	m.fmut.RLock()
-	runner, runnerExists := m.folderRunners[folder.ID]
-	m.fmut.RUnlock()
-
-	var oldErr error
-	if runnerExists {
-		_, _, oldErr = runner.getState()
-	}
-
-	if err != nil {
-		if oldErr != nil && oldErr.Error() != err.Error() {
-			l.Infof("Folder %s error changed: %q -> %q", folder.Description(), oldErr, err)
-		} else if oldErr == nil {
-			l.Warnf("Stopping folder %s - %v", folder.Description(), err)
-		}
-		if runnerExists {
-			runner.setError(err)
-		}
-	} else if oldErr != nil {
-		l.Infof("Folder %q error is cleared, restarting", folder.ID)
-		if runnerExists {
-			runner.clearError()
-		}
-	}
-}
-
 func (m *Model) ResetFolder(folder string) {
 	l.Infof("Cleaning data for folder %q", folder)
 	db.DropFolder(m.db, folder)

lib/model/model_test.go

@@ -2028,7 +2028,7 @@ func TestScanNoDatabaseWrite(t *testing.T) {
 }
 
 func TestIssue2782(t *testing.T) {
-	// CheckFolderHealth should accept a symlinked folder, when using tilde-expanded path.
+	// CheckHealth should accept a symlinked folder, when using tilde-expanded path.
 
 	if runtime.GOOS == "windows" {
 		t.Skip("not reliable on Windows")
@@ -2070,7 +2070,10 @@ func TestIssue2782(t *testing.T) {
 		t.Error("scan error:", err)
 	}
 
-	if err := m.CheckFolderHealth("default"); err != nil {
+	m.fmut.Lock()
+	runner, _ := m.folderRunners["default"]
+	m.fmut.Unlock()
+	if err := runner.CheckHealth(); err != nil {
 		t.Error("health check error:", err)
 	}
 }

lib/model/rofolder.go

@@ -35,7 +35,7 @@ func (f *sendOnlyFolder) Serve() {
 	}()
 
 	if f.FSWatcherEnabled {
-		f.startWatcher()
+		f.startWatch()
 	}
 
 	for {
@@ -43,10 +43,8 @@ func (f *sendOnlyFolder) Serve() {
 		case <-f.ctx.Done():
 			return
 
-		case <-f.ignoresUpdated:
-			if f.FSWatcherEnabled {
-				f.restartWatcher()
-			}
+		case <-f.restartWatchChan:
+			f.restartWatch()
 
 		case <-f.scan.timer.C:
 			l.Debugln(f, "Scanning subdirectories")

lib/model/rwfolder.go

@@ -165,7 +165,7 @@ func (f *sendReceiveFolder) Serve() {
 	var prevIgnoreHash string
 
 	if f.FSWatcherEnabled {
-		f.startWatcher()
+		f.startWatch()
 	}
 
 	for {
@@ -178,12 +178,6 @@ func (f *sendReceiveFolder) Serve() {
 			f.pullTimer.Reset(0)
 			l.Debugln(f, "remote index updated, rescheduling pull")
 
-		case <-f.ignoresUpdated:
-			if f.FSWatcherEnabled {
-				f.restartWatcher()
-			}
-			f.IndexUpdated()
-
 		case <-f.pullTimer.C:
 			select {
 			case <-f.initialScanFinished:
@@ -214,8 +208,8 @@ func (f *sendReceiveFolder) Serve() {
 				continue
 			}
 
-			if err := f.model.CheckFolderHealth(f.folderID); err != nil {
-				l.Infoln("Skipping pull of", f.Description(), "due to folder error:", err)
+			if err := f.CheckHealth(); err != nil {
+				l.Debugln("Skipping pull of", f.Description(), "due to folder error:", err)
 				f.pullTimer.Reset(f.sleep)
 				continue
 			}
@@ -292,6 +286,9 @@ func (f *sendReceiveFolder) Serve() {
 		case fsEvents := <-f.watchChan:
 			l.Debugln(f, "filesystem notification rescan")
 			f.scanSubdirs(fsEvents)
+
+		case <-f.restartWatchChan:
+			f.restartWatch()
 		}
 	}
 }
@@ -1696,6 +1693,11 @@ func (f *sendReceiveFolder) currentErrors() []fileError {
 	return errors
 }
 
+func (f *sendReceiveFolder) IgnoresUpdated() {
+	f.folder.IgnoresUpdated()
+	f.IndexUpdated()
+}
+
 // A []fileError is sent as part of an event and will be JSON serialized.
 type fileError struct {
 	Path string `json:"path"`