// populateVolumes copies data from the container's rootfs into the volume for non-binds.
// this is only called when the container is created.
func (daemon *Daemon) populateVolumes(c *container.Container) error {
for _, mnt := range c.MountPoints {
if !mnt.CopyData || mnt.Volume == nil {
continue
}
logrus.Debugf("copying image data from %s:%s, to %s", c.ID, mnt.Destination, mnt.Name)
if err := c.CopyImagePathContent(mnt.Volume, mnt.Destination); err != nil {
return err
}
}
return nil
}
// populateVolumes copies data from the container's rootfs into the volume for non-binds.
// this is only called when the container is created.
func (daemon *Daemon) populateVolumes(c *container.Container) error {
for _, mnt := range c.MountPoints {
// skip binds and volumes referenced by other containers (ie, volumes-from)
if mnt.Driver == "" || mnt.Volume == nil || len(daemon.volumes.Refs(mnt.Volume)) > 1 {
continue
}
logrus.Debugf("copying image data from %s:%s, to %s", c.ID, mnt.Destination, mnt.Name)
if err := c.CopyImagePathContent(mnt.Volume, mnt.Destination); err != nil {
return err
}
}
return nil
}
// createContainerPlatformSpecificSettings performs platform specific container create functionality
func (daemon *Daemon) createContainerPlatformSpecificSettings(container *container.Container, config *runconfig.Config, hostConfig *runconfig.HostConfig, img *image.Image) error {
if err := daemon.Mount(container); err != nil {
return err
}
defer daemon.Unmount(container)
for spec := range config.Volumes {
name := stringid.GenerateNonCryptoID()
destination := filepath.Clean(spec)
// Skip volumes for which we already have something mounted on that
// destination because of a --volume-from.
if container.IsDestinationMounted(destination) {
continue
}
path, err := container.GetResourcePath(destination)
if err != nil {
return err
}
stat, err := os.Stat(path)
if err == nil && !stat.IsDir() {
return derr.ErrorCodeMountOverFile.WithArgs(path)
}
volumeDriver := hostConfig.VolumeDriver
if destination != "" && img != nil {
if _, ok := img.ContainerConfig.Volumes[destination]; ok {
// check for whether bind is not specified and then set to local
if _, ok := container.MountPoints[destination]; !ok {
volumeDriver = volume.DefaultDriverName
}
}
}
v, err := daemon.createVolume(name, volumeDriver, nil)
if err != nil {
return err
}
if err := label.Relabel(v.Path(), container.MountLabel, true); err != nil {
return err
}
// never attempt to copy existing content in a container FS to a shared volume
if v.DriverName() == volume.DefaultDriverName {
if err := container.CopyImagePathContent(v, destination); err != nil {
return err
}
}
container.AddMountPointWithVolume(destination, v, true)
}
return nil
}