cb0f4ce55a
This removes the out of disk space check from CheckHealth. The disk space is now only checked if there are files to pull, in which case pulling those files is stopped, but everything else (dirs, links, deletes) keeps running -> can recover disk space through pulling.
313 lines
10 KiB
Go
313 lines
10 KiB
Go
// Copyright (C) 2014 The Syncthing Authors.
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//
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// This Source Code Form is subject to the terms of the Mozilla Public
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// License, v. 2.0. If a copy of the MPL was not distributed with this file,
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// You can obtain one at https://mozilla.org/MPL/2.0/.
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package config
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import (
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"errors"
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"fmt"
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"runtime"
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"github.com/syncthing/syncthing/lib/fs"
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"github.com/syncthing/syncthing/lib/protocol"
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"github.com/syncthing/syncthing/lib/util"
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"github.com/syncthing/syncthing/lib/versioner"
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)
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var (
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ErrPathNotDirectory = errors.New("folder path not a directory")
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ErrPathMissing = errors.New("folder path missing")
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ErrMarkerMissing = errors.New("folder marker missing")
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)
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const DefaultMarkerName = ".stfolder"
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type FolderConfiguration struct {
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ID string `xml:"id,attr" json:"id"`
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Label string `xml:"label,attr" json:"label" restart:"false"`
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FilesystemType fs.FilesystemType `xml:"filesystemType" json:"filesystemType"`
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Path string `xml:"path,attr" json:"path"`
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Type FolderType `xml:"type,attr" json:"type"`
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Devices []FolderDeviceConfiguration `xml:"device" json:"devices"`
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RescanIntervalS int `xml:"rescanIntervalS,attr" json:"rescanIntervalS"`
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FSWatcherEnabled bool `xml:"fsWatcherEnabled,attr" json:"fsWatcherEnabled"`
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FSWatcherDelayS int `xml:"fsWatcherDelayS,attr" json:"fsWatcherDelayS"`
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IgnorePerms bool `xml:"ignorePerms,attr" json:"ignorePerms"`
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AutoNormalize bool `xml:"autoNormalize,attr" json:"autoNormalize"`
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MinDiskFree Size `xml:"minDiskFree" json:"minDiskFree"`
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Versioning VersioningConfiguration `xml:"versioning" json:"versioning"`
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Copiers int `xml:"copiers" json:"copiers"` // This defines how many files are handled concurrently.
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PullerMaxPendingKiB int `xml:"pullerMaxPendingKiB" json:"pullerMaxPendingKiB"`
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Hashers int `xml:"hashers" json:"hashers"` // Less than one sets the value to the number of cores. These are CPU bound due to hashing.
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Order PullOrder `xml:"order" json:"order"`
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IgnoreDelete bool `xml:"ignoreDelete" json:"ignoreDelete"`
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ScanProgressIntervalS int `xml:"scanProgressIntervalS" json:"scanProgressIntervalS"` // Set to a negative value to disable. Value of 0 will get replaced with value of 2 (default value)
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PullerPauseS int `xml:"pullerPauseS" json:"pullerPauseS"`
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MaxConflicts int `xml:"maxConflicts" json:"maxConflicts"`
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DisableSparseFiles bool `xml:"disableSparseFiles" json:"disableSparseFiles"`
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DisableTempIndexes bool `xml:"disableTempIndexes" json:"disableTempIndexes"`
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Paused bool `xml:"paused" json:"paused"`
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WeakHashThresholdPct int `xml:"weakHashThresholdPct" json:"weakHashThresholdPct"` // Use weak hash if more than X percent of the file has changed. Set to -1 to always use weak hash.
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MarkerName string `xml:"markerName" json:"markerName"`
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UseLargeBlocks bool `xml:"useLargeBlocks" json:"useLargeBlocks"`
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cachedFilesystem fs.Filesystem
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DeprecatedReadOnly bool `xml:"ro,attr,omitempty" json:"-"`
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DeprecatedMinDiskFreePct float64 `xml:"minDiskFreePct,omitempty" json:"-"`
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DeprecatedPullers int `xml:"pullers,omitempty" json:"-"`
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}
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type FolderDeviceConfiguration struct {
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DeviceID protocol.DeviceID `xml:"id,attr" json:"deviceID"`
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IntroducedBy protocol.DeviceID `xml:"introducedBy,attr" json:"introducedBy"`
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}
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func NewFolderConfiguration(myID protocol.DeviceID, id, label string, fsType fs.FilesystemType, path string) FolderConfiguration {
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f := FolderConfiguration{
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ID: id,
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Label: label,
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RescanIntervalS: 3600,
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FSWatcherEnabled: true,
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FSWatcherDelayS: 10,
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MinDiskFree: Size{Value: 1, Unit: "%"},
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Devices: []FolderDeviceConfiguration{{DeviceID: myID}},
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AutoNormalize: true,
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MaxConflicts: -1,
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FilesystemType: fsType,
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Path: path,
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}
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f.prepare()
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return f
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}
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func (f FolderConfiguration) Copy() FolderConfiguration {
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c := f
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c.Devices = make([]FolderDeviceConfiguration, len(f.Devices))
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copy(c.Devices, f.Devices)
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c.Versioning = f.Versioning.Copy()
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return c
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}
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func (f FolderConfiguration) Filesystem() fs.Filesystem {
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// This is intentionally not a pointer method, because things like
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// cfg.Folders["default"].Filesystem() should be valid.
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if f.cachedFilesystem == nil && f.Path != "" {
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l.Infoln("bug: uncached filesystem call (should only happen in tests)")
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return fs.NewFilesystem(f.FilesystemType, f.Path)
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}
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return f.cachedFilesystem
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}
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func (f FolderConfiguration) Versioner() versioner.Versioner {
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if f.Versioning.Type == "" {
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return nil
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}
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versionerFactory, ok := versioner.Factories[f.Versioning.Type]
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if !ok {
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l.Fatalf("Requested versioning type %q that does not exist", f.Versioning.Type)
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}
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return versionerFactory(f.ID, f.Filesystem(), f.Versioning.Params)
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}
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func (f *FolderConfiguration) CreateMarker() error {
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if err := f.CheckPath(); err != ErrMarkerMissing {
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return err
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}
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if f.MarkerName != DefaultMarkerName {
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// Folder uses a non-default marker so we shouldn't mess with it.
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// Pretend we created it and let the subsequent health checks sort
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// out the actual situation.
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return nil
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}
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permBits := fs.FileMode(0777)
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if runtime.GOOS == "windows" {
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// Windows has no umask so we must chose a safer set of bits to
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// begin with.
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permBits = 0700
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}
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fs := f.Filesystem()
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err := fs.Mkdir(DefaultMarkerName, permBits)
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if err != nil {
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return err
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}
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if dir, err := fs.Open("."); err != nil {
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l.Debugln("folder marker: open . failed:", err)
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} else if err := dir.Sync(); err != nil {
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l.Debugln("folder marker: fsync . failed:", err)
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}
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fs.Hide(DefaultMarkerName)
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return nil
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}
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// CheckPath returns nil if the folder root exists and contains the marker file
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func (f *FolderConfiguration) CheckPath() error {
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fi, err := f.Filesystem().Stat(".")
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if err != nil {
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if !fs.IsNotExist(err) {
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return err
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}
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return ErrPathMissing
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}
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// Users might have the root directory as a symlink or reparse point.
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// Furthermore, OneDrive bullcrap uses a magic reparse point to the cloudz...
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// Yet it's impossible for this to happen, as filesystem adds a trailing
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// path separator to the root, so even if you point the filesystem at a file
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// Stat ends up calling stat on C:\dir\file\ which, fails with "is not a directory"
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// in the error check above, and we don't even get to here.
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if !fi.IsDir() && !fi.IsSymlink() {
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return ErrPathNotDirectory
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}
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_, err = f.Filesystem().Stat(f.MarkerName)
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if err != nil {
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if !fs.IsNotExist(err) {
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return err
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}
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return ErrMarkerMissing
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}
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return nil
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}
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func (f *FolderConfiguration) CreateRoot() (err error) {
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// Directory permission bits. Will be filtered down to something
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// sane by umask on Unixes.
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permBits := fs.FileMode(0777)
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if runtime.GOOS == "windows" {
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// Windows has no umask so we must chose a safer set of bits to
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// begin with.
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permBits = 0700
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}
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filesystem := f.Filesystem()
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if _, err = filesystem.Stat("."); fs.IsNotExist(err) {
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err = filesystem.MkdirAll(".", permBits)
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}
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return err
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}
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func (f FolderConfiguration) Description() string {
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if f.Label == "" {
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return f.ID
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}
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return fmt.Sprintf("%q (%s)", f.Label, f.ID)
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}
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func (f *FolderConfiguration) DeviceIDs() []protocol.DeviceID {
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deviceIDs := make([]protocol.DeviceID, len(f.Devices))
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for i, n := range f.Devices {
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deviceIDs[i] = n.DeviceID
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}
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return deviceIDs
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}
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func (f *FolderConfiguration) prepare() {
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if f.Path != "" {
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f.cachedFilesystem = fs.NewFilesystem(f.FilesystemType, f.Path)
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}
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if f.RescanIntervalS > MaxRescanIntervalS {
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f.RescanIntervalS = MaxRescanIntervalS
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} else if f.RescanIntervalS < 0 {
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f.RescanIntervalS = 0
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}
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if f.FSWatcherDelayS <= 0 {
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f.FSWatcherEnabled = false
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f.FSWatcherDelayS = 10
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}
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if f.Versioning.Params == nil {
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f.Versioning.Params = make(map[string]string)
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}
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if f.WeakHashThresholdPct == 0 {
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f.WeakHashThresholdPct = 25
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}
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if f.MarkerName == "" {
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f.MarkerName = DefaultMarkerName
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}
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}
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// RequiresRestartOnly returns a copy with only the attributes that require
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// restart on change.
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func (f FolderConfiguration) RequiresRestartOnly() FolderConfiguration {
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copy := f
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// Manual handling for things that are not taken care of by the tag
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// copier, yet should not cause a restart.
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copy.cachedFilesystem = nil
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blank := FolderConfiguration{}
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util.CopyMatchingTag(&blank, ©, "restart", func(v string) bool {
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if len(v) > 0 && v != "false" {
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panic(fmt.Sprintf(`unexpected tag value: %s. expected untagged or "false"`, v))
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}
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return v == "false"
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})
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return copy
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}
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func (f *FolderConfiguration) SharedWith(device protocol.DeviceID) bool {
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for _, dev := range f.Devices {
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if dev.DeviceID == device {
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return true
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}
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}
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return false
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}
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type FolderDeviceConfigurationList []FolderDeviceConfiguration
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func (l FolderDeviceConfigurationList) Less(a, b int) bool {
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return l[a].DeviceID.Compare(l[b].DeviceID) == -1
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}
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func (l FolderDeviceConfigurationList) Swap(a, b int) {
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l[a], l[b] = l[b], l[a]
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}
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func (l FolderDeviceConfigurationList) Len() int {
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return len(l)
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}
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func (f *FolderConfiguration) CheckAvailableSpace(req int64) error {
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fs := f.Filesystem()
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usage, err := fs.Usage(".")
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if err != nil {
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return nil
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}
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usage.Free -= req
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if usage.Free > 0 {
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if err := checkFreeSpace(f.MinDiskFree, usage); err == nil {
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return nil
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}
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}
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return fmt.Errorf("insufficient space in %v %v", fs.Type(), fs.URI())
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}
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type FolderConfigurationList []FolderConfiguration
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func (l FolderConfigurationList) Len() int {
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return len(l)
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}
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func (l FolderConfigurationList) Less(a, b int) bool {
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return l[a].ID < l[b].ID
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}
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func (l FolderConfigurationList) Swap(a, b int) {
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l[a], l[b] = l[b], l[a]
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}
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