コード例 #1
0
ファイル: store.go プロジェクト: jfrazelle/docker
// volumeExists returns if the volume is still present in the driver.
// An error is returned if there was an issue communicating with the driver.
func volumeExists(v volume.Volume) (bool, error) {
	exists, err := lookupVolume(v.DriverName(), v.Name())
	if err != nil {
		return false, err
	}
	return exists != nil, nil
}
コード例 #2
0
ファイル: volumes.go プロジェクト: m1911/hyper
// volumeToAPIType converts a volume.Volume to the type used by the remote API
func volumeToAPIType(v volume.Volume) *types.Volume {
	return &types.Volume{
		Name:       v.Name(),
		Driver:     v.DriverName(),
		Mountpoint: v.Path(),
	}
}
コード例 #3
0
ファイル: volumes.go プロジェクト: fwalker/dashboard
func removeVolume(v volume.Volume) error {
	vd, err := getVolumeDriver(v.DriverName())
	if err != nil {
		return nil
	}
	return vd.Remove(v)
}
コード例 #4
0
ファイル: store.go プロジェクト: ngorskig/docker
// Remove removes the requested volume. A volume is not removed if the usage count is > 0
func (s *VolumeStore) Remove(v volume.Volume) error {
	name := normaliseVolumeName(v.Name())
	s.locks.Lock(name)
	defer s.locks.Unlock(name)

	logrus.Debugf("Removing volume reference: driver %s, name %s", v.DriverName(), name)
	vc, exists := s.get(name)
	if !exists {
		return ErrNoSuchVolume
	}

	if vc.count > 0 {
		return ErrVolumeInUse
	}

	vd, err := volumedrivers.GetDriver(vc.DriverName())
	if err != nil {
		return err
	}
	if err := vd.Remove(vc.Volume); err != nil {
		return err
	}

	s.remove(name)
	return nil
}
コード例 #5
0
func (container *Container) addMountPointWithVolume(destination string, vol volume.Volume, rw bool) {
	container.MountPoints[destination] = &mountPoint{
		Name:        vol.Name(),
		Driver:      vol.DriverName(),
		Destination: destination,
		RW:          rw,
		Volume:      vol,
	}
}
コード例 #6
0
ファイル: container.go プロジェクト: moxiegirl/docker
// AddMountPointWithVolume adds a new mount point configured with a volume to the container.
func (container *Container) AddMountPointWithVolume(destination string, vol volume.Volume, rw bool) {
	container.MountPoints[destination] = &volume.MountPoint{
		Name:        vol.Name(),
		Driver:      vol.DriverName(),
		Destination: destination,
		RW:          rw,
		Volume:      vol,
		CopyData:    volume.DefaultCopyMode,
	}
}
コード例 #7
0
ファイル: volumes.go プロジェクト: RAMESHBABUK/docker
// volumeToAPIType converts a volume.Volume to the type used by the remote API
func volumeToAPIType(v volume.Volume) *types.Volume {
	tv := &types.Volume{
		Name:   v.Name(),
		Driver: v.DriverName(),
	}
	if v, ok := v.(interface {
		Labels() map[string]string
	}); ok {
		tv.Labels = v.Labels()
	}
	return tv
}
コード例 #8
0
ファイル: volumes.go プロジェクト: NunoEdgarGub1/docker
// Decrement decrements the usage count of the passed in volume by 1
func (s *volumeStore) Decrement(v volume.Volume) {
	s.mu.Lock()
	defer s.mu.Unlock()
	logrus.Debugf("Decrementing volume reference: driver %s, name %s", v.DriverName(), v.Name())

	vc, exists := s.vols[v.Name()]
	if !exists {
		return
	}
	vc.count--
	return
}
コード例 #9
0
ファイル: store.go プロジェクト: previousnext/kube-ingress
// Increment increments the usage count of the passed in volume by 1
func (s *VolumeStore) Increment(v volume.Volume) {
	s.mu.Lock()
	defer s.mu.Unlock()
	logrus.Debugf("Incrementing volume reference: driver %s, name %s", v.DriverName(), v.Name())

	vc, exists := s.vols[v.Name()]
	if !exists {
		s.vols[v.Name()] = &volumeCounter{v, 1}
		return
	}
	vc.count++
}
コード例 #10
0
ファイル: store.go プロジェクト: ngorskig/docker
// Increment increments the usage count of the passed in volume by 1
func (s *VolumeStore) Increment(v volume.Volume) {
	name := normaliseVolumeName(v.Name())
	s.locks.Lock(name)
	defer s.locks.Unlock(name)

	logrus.Debugf("Incrementing volume reference: driver %s, name %s", v.DriverName(), v.Name())
	vc, exists := s.get(name)
	if !exists {
		s.set(name, &volumeCounter{v, 1})
		return
	}
	vc.count++
}
コード例 #11
0
ファイル: volumes.go プロジェクト: Mic92/docker
// volumeToAPIType converts a volume.Volume to the type used by the remote API
func volumeToAPIType(v volume.Volume) *types.Volume {
	tv := &types.Volume{
		Name:   v.Name(),
		Driver: v.DriverName(),
	}
	if v, ok := v.(volume.DetailedVolume); ok {
		tv.Labels = v.Labels()
		tv.Options = v.Options()
		tv.Scope = v.Scope()
	}

	return tv
}
コード例 #12
0
ファイル: store.go プロジェクト: maaquib/docker
// Decrement decrements the usage count of the passed in volume by 1
func (s *VolumeStore) Decrement(v volume.Volume) {
	s.mu.Lock()
	defer s.mu.Unlock()
	name := normaliseVolumeName(v.Name())
	logrus.Debugf("Decrementing volume reference: driver %s, name %s", v.DriverName(), name)

	vc, exists := s.vols[name]
	if !exists {
		return
	}
	if vc.count == 0 {
		return
	}
	vc.count--
}
コード例 #13
0
ファイル: store.go プロジェクト: ngorskig/docker
// Decrement decrements the usage count of the passed in volume by 1
func (s *VolumeStore) Decrement(v volume.Volume) {
	name := normaliseVolumeName(v.Name())
	s.locks.Lock(name)
	defer s.locks.Unlock(name)
	logrus.Debugf("Decrementing volume reference: driver %s, name %s", v.DriverName(), v.Name())

	vc, exists := s.get(name)
	if !exists {
		return
	}
	if vc.count == 0 {
		return
	}
	vc.count--
}
コード例 #14
0
ファイル: volumes.go プロジェクト: SUSE/docker.mirror
// volumeToAPIType converts a volume.Volume to the type used by the remote API
func volumeToAPIType(v volume.Volume) *types.Volume {
	tv := &types.Volume{
		Name:     v.Name(),
		Driver:   v.DriverName(),
		Size:     -1,
		RefCount: -1,
	}
	if v, ok := v.(volume.LabeledVolume); ok {
		tv.Labels = v.Labels()
	}

	if v, ok := v.(volume.ScopedVolume); ok {
		tv.Scope = v.Scope()
	}
	return tv
}
コード例 #15
0
ファイル: store.go プロジェクト: harche/docker
// volumeExists returns if the volume is still present in the driver.
// An error is returned if there was an issue communicating with the driver.
func volumeExists(v volume.Volume) (bool, error) {
	vd, err := volumedrivers.GetDriver(v.DriverName())
	if err != nil {
		return false, errors.Wrapf(err, "error while checking if volume %q exists in driver %q", v.Name(), v.DriverName())
	}
	exists, err := vd.Get(v.Name())
	if err != nil {
		err = errors.Cause(err)
		if _, ok := err.(net.Error); ok {
			return false, errors.Wrapf(err, "error while checking if volume %q exists in driver %q", v.Name(), v.DriverName())
		}

		// At this point, the error could be anything from the driver, such as "no such volume"
		// Let's not check an error here, and instead check if the driver returned a volume
	}
	if exists == nil {
		return false, nil
	}
	return true, nil
}
コード例 #16
0
ファイル: store.go プロジェクト: slowreadr/docker
// Remove removes the requested volume. A volume is not removed if it has any refs
func (s *VolumeStore) Remove(v volume.Volume) error {
	name := normaliseVolumeName(v.Name())
	s.locks.Lock(name)
	defer s.locks.Unlock(name)

	if refs, exists := s.refs[name]; exists && len(refs) > 0 {
		return &OpErr{Err: errVolumeInUse, Name: v.Name(), Op: "remove", Refs: refs}
	}

	vd, err := volumedrivers.GetDriver(v.DriverName())
	if err != nil {
		return &OpErr{Err: err, Name: vd.Name(), Op: "remove"}
	}

	logrus.Debugf("Removing volume reference: driver %s, name %s", v.DriverName(), name)
	if err := vd.Remove(v); err != nil {
		return &OpErr{Err: err, Name: name, Op: "remove"}
	}

	s.purge(name)
	return nil
}
コード例 #17
0
ファイル: store.go プロジェクト: jfrazelle/docker
// Remove removes the requested volume. A volume is not removed if it has any refs
func (s *VolumeStore) Remove(v volume.Volume) error {
	name := normaliseVolumeName(v.Name())
	s.locks.Lock(name)
	defer s.locks.Unlock(name)

	if s.hasRef(name) {
		return &OpErr{Err: errVolumeInUse, Name: v.Name(), Op: "remove", Refs: s.getRefs(name)}
	}

	vd, err := volumedrivers.GetDriver(v.DriverName())
	if err != nil {
		return &OpErr{Err: err, Name: vd.Name(), Op: "remove"}
	}

	logrus.Debugf("Removing volume reference: driver %s, name %s", v.DriverName(), name)
	vol := unwrapVolume(v)
	if err := vd.Remove(vol); err != nil {
		return &OpErr{Err: err, Name: name, Op: "remove"}
	}

	s.Purge(name)
	return nil
}
コード例 #18
0
ファイル: volumes.go プロジェクト: NunoEdgarGub1/docker
// Remove removes the requested volume. A volume is not removed if the usage count is > 0
func (s *volumeStore) Remove(v volume.Volume) error {
	s.mu.Lock()
	defer s.mu.Unlock()
	name := v.Name()
	logrus.Debugf("Removing volume reference: driver %s, name %s", v.DriverName(), name)
	vc, exists := s.vols[name]
	if !exists {
		return ErrNoSuchVolume
	}

	if vc.count != 0 {
		return ErrVolumeInUse
	}

	vd, err := getVolumeDriver(vc.DriverName())
	if err != nil {
		return err
	}
	if err := vd.Remove(vc.Volume); err != nil {
		return err
	}
	delete(s.vols, name)
	return nil
}
コード例 #19
0
ファイル: restore.go プロジェクト: justincormack/docker
// restore is called when a new volume store is created.
// It's primary purpose is to ensure that all drivers' refcounts are set based
// on known volumes after a restart.
// This only attempts to track volumes that are actually stored in the on-disk db.
// It does not probe the available drivers to find anything that may have been added
// out of band.
func (s *VolumeStore) restore() {
	var entries []*dbEntry
	s.db.View(func(tx *bolt.Tx) error {
		entries = listEntries(tx)
		return nil
	})

	chRemove := make(chan []byte, len(entries))
	var wg sync.WaitGroup
	for _, entry := range entries {
		wg.Add(1)
		// this is potentially a very slow operation, so do it in a goroutine
		go func(entry *dbEntry) {
			defer wg.Done()
			var meta volumeMetadata
			if len(entry.Value) != 0 {
				if err := json.Unmarshal(entry.Value, &meta); err != nil {
					logrus.Errorf("Error while reading volume metadata for volume %q: %v", string(entry.Key), err)
					// don't return here, we can try with `getVolume` below
				}
			}

			var v volume.Volume
			var err error
			if meta.Driver != "" {
				v, err = lookupVolume(meta.Driver, string(entry.Key))
				if err != nil && err != errNoSuchVolume {
					logrus.WithError(err).WithField("driver", meta.Driver).WithField("volume", string(entry.Key)).Warn("Error restoring volume")
					return
				}
				if v == nil {
					// doesn't exist in the driver, remove it from the db
					chRemove <- entry.Key
					return
				}
			} else {
				v, err = s.getVolume(string(entry.Key))
				if err != nil {
					if err == errNoSuchVolume {
						chRemove <- entry.Key
					}
					return
				}

				meta.Driver = v.DriverName()
				if err := s.setMeta(v.Name(), meta); err != nil {
					logrus.WithError(err).WithField("driver", meta.Driver).WithField("volume", v.Name()).Warn("Error updating volume metadata on restore")
				}
			}

			// increment driver refcount
			volumedrivers.CreateDriver(meta.Driver)

			// cache the volume
			s.globalLock.Lock()
			s.options[v.Name()] = meta.Options
			s.labels[v.Name()] = meta.Labels
			s.names[v.Name()] = v
			s.globalLock.Unlock()
		}(entry)
	}

	wg.Wait()
	close(chRemove)
	s.db.Update(func(tx *bolt.Tx) error {
		for k := range chRemove {
			if err := removeMeta(tx, string(k)); err != nil {
				logrus.Warnf("Error removing stale entry from volume db: %v", err)
			}
		}
		return nil
	})
}
コード例 #20
0
ファイル: volumes.go プロジェクト: Mic92/docker
// registerMountPoints initializes the container mount points with the configured volumes and bind mounts.
// It follows the next sequence to decide what to mount in each final destination:
//
// 1. Select the previously configured mount points for the containers, if any.
// 2. Select the volumes mounted from another containers. Overrides previously configured mount point destination.
// 3. Select the bind mounts set by the client. Overrides previously configured mount point destinations.
// 4. Cleanup old volumes that are about to be reassigned.
func (daemon *Daemon) registerMountPoints(container *container.Container, hostConfig *containertypes.HostConfig) (retErr error) {
	binds := map[string]bool{}
	mountPoints := map[string]*volume.MountPoint{}
	defer func() {
		// clean up the container mountpoints once return with error
		if retErr != nil {
			for _, m := range mountPoints {
				if m.Volume == nil {
					continue
				}
				daemon.volumes.Dereference(m.Volume, container.ID)
			}
		}
	}()

	// 1. Read already configured mount points.
	for destination, point := range container.MountPoints {
		mountPoints[destination] = point
	}

	// 2. Read volumes from other containers.
	for _, v := range hostConfig.VolumesFrom {
		containerID, mode, err := volume.ParseVolumesFrom(v)
		if err != nil {
			return err
		}

		c, err := daemon.GetContainer(containerID)
		if err != nil {
			return err
		}

		for _, m := range c.MountPoints {
			cp := &volume.MountPoint{
				Name:        m.Name,
				Source:      m.Source,
				RW:          m.RW && volume.ReadWrite(mode),
				Driver:      m.Driver,
				Destination: m.Destination,
				Propagation: m.Propagation,
				Spec:        m.Spec,
				CopyData:    false,
			}

			if len(cp.Source) == 0 {
				v, err := daemon.volumes.GetWithRef(cp.Name, cp.Driver, container.ID)
				if err != nil {
					return err
				}
				cp.Volume = v
			}

			mountPoints[cp.Destination] = cp
		}
	}

	// 3. Read bind mounts
	for _, b := range hostConfig.Binds {
		bind, err := volume.ParseMountRaw(b, hostConfig.VolumeDriver)
		if err != nil {
			return err
		}

		// #10618
		_, tmpfsExists := hostConfig.Tmpfs[bind.Destination]
		if binds[bind.Destination] || tmpfsExists {
			return fmt.Errorf("Duplicate mount point '%s'", bind.Destination)
		}

		if bind.Type == mounttypes.TypeVolume {
			// create the volume
			v, err := daemon.volumes.CreateWithRef(bind.Name, bind.Driver, container.ID, nil, nil)
			if err != nil {
				return err
			}
			bind.Volume = v
			bind.Source = v.Path()
			// bind.Name is an already existing volume, we need to use that here
			bind.Driver = v.DriverName()
			if bind.Driver == volume.DefaultDriverName {
				setBindModeIfNull(bind)
			}
		}

		binds[bind.Destination] = true
		mountPoints[bind.Destination] = bind
	}

	for _, cfg := range hostConfig.Mounts {
		mp, err := volume.ParseMountSpec(cfg)
		if err != nil {
			return dockererrors.NewBadRequestError(err)
		}

		if binds[mp.Destination] {
			return fmt.Errorf("Duplicate mount point '%s'", cfg.Target)
		}

		if mp.Type == mounttypes.TypeVolume {
			var v volume.Volume
			if cfg.VolumeOptions != nil {
				var driverOpts map[string]string
				if cfg.VolumeOptions.DriverConfig != nil {
					driverOpts = cfg.VolumeOptions.DriverConfig.Options
				}
				v, err = daemon.volumes.CreateWithRef(mp.Name, mp.Driver, container.ID, driverOpts, cfg.VolumeOptions.Labels)
			} else {
				v, err = daemon.volumes.CreateWithRef(mp.Name, mp.Driver, container.ID, nil, nil)
			}
			if err != nil {
				return err
			}

			if err := label.Relabel(mp.Source, container.MountLabel, false); err != nil {
				return err
			}
			mp.Volume = v
			mp.Name = v.Name()
			mp.Driver = v.DriverName()

			// only use the cached path here since getting the path is not necessary right now and calling `Path()` may be slow
			if cv, ok := v.(interface {
				CachedPath() string
			}); ok {
				mp.Source = cv.CachedPath()
			}
		}

		binds[mp.Destination] = true
		mountPoints[mp.Destination] = mp
	}

	container.Lock()

	// 4. Cleanup old volumes that are about to be reassigned.
	for _, m := range mountPoints {
		if m.BackwardsCompatible() {
			if mp, exists := container.MountPoints[m.Destination]; exists && mp.Volume != nil {
				daemon.volumes.Dereference(mp.Volume, container.ID)
			}
		}
	}
	container.MountPoints = mountPoints

	container.Unlock()

	return nil
}
コード例 #21
0
ファイル: restore.go プロジェクト: mYmNeo/docker
// restore is called when a new volume store is created.
// It's primary purpose is to ensure that all drivers' refcounts are set based
// on known volumes after a restart.
// This only attempts to track volumes that are actually stored in the on-disk db.
// It does not probe the available drivers to find anything that may have been added
// out of band.
func (s *VolumeStore) restore() {
	var ls []volumeMetadata
	s.db.View(func(tx *bolt.Tx) error {
		ls = listMeta(tx)
		return nil
	})

	chRemove := make(chan *volumeMetadata, len(ls))
	var wg sync.WaitGroup
	for _, meta := range ls {
		wg.Add(1)
		// this is potentially a very slow operation, so do it in a goroutine
		go func(meta volumeMetadata) {
			defer wg.Done()

			var v volume.Volume
			var err error
			if meta.Driver != "" {
				v, err = lookupVolume(meta.Driver, meta.Name)
				if err != nil && err != errNoSuchVolume {
					logrus.WithError(err).WithField("driver", meta.Driver).WithField("volume", meta.Name).Warn("Error restoring volume")
					return
				}
				if v == nil {
					// doesn't exist in the driver, remove it from the db
					chRemove <- &meta
					return
				}
			} else {
				v, err = s.getVolume(meta.Name)
				if err != nil {
					if err == errNoSuchVolume {
						chRemove <- &meta
					}
					return
				}

				meta.Driver = v.DriverName()
				if err := s.setMeta(v.Name(), meta); err != nil {
					logrus.WithError(err).WithField("driver", meta.Driver).WithField("volume", v.Name()).Warn("Error updating volume metadata on restore")
				}
			}

			// increment driver refcount
			volumedrivers.CreateDriver(meta.Driver)

			// cache the volume
			s.globalLock.Lock()
			s.options[v.Name()] = meta.Options
			s.labels[v.Name()] = meta.Labels
			s.names[v.Name()] = v
			s.globalLock.Unlock()
		}(meta)
	}

	wg.Wait()
	close(chRemove)
	s.db.Update(func(tx *bolt.Tx) error {
		for meta := range chRemove {
			if err := removeMeta(tx, meta.Name); err != nil {
				logrus.WithField("volume", meta.Name).Warnf("Error removing stale entry from volume db: %v", err)
			}
		}
		return nil
	})
}