multisnapshotter: set snapshotter in container config

since we support multi snapshotter, set current snapshotter in container
config, then plugin can know current used snapshotter.

Signed-off-by: Ace-Tang <aceapril@126.com>

daemon/mgr/container.go

@@ -316,16 +316,25 @@ func (mgr *ContainerManager) Restore(ctx context.Context) error {
 
 // Create checks passed in parameters and create a Container object whose status is set at Created.
 func (mgr *ContainerManager) Create(ctx context.Context, name string, config *types.ContainerCreateConfig) (resp *types.ContainerCreateResp, err error) {
+ currentSnapshotter := ctrd.CurrentSnapshotterName(ctx)
+ config.Snapshotter = currentSnapshotter
+
  if mgr.containerPlugin != nil {
  logrus.Infof("invoke container pre-create hook in plugin")
  if ex := mgr.containerPlugin.PreCreate(config); ex != nil {
  return nil, errors.Wrapf(ex, "pre-create plugin point execute failed")
  }
  }
 
+ // Attention, since we support multi snapshotter, if snapshotter not changed,
+ // means plugin not change it, so remove value in case to effect origin logic
+ if config.Snapshotter == currentSnapshotter {
+ config.Snapshotter = ""
+ }
+
  // NOTE: choose snapshotter, snapshotter can only be set
  // through containerPlugin in Create function
- ctx = ctrd.WithSnapshotter(ctx, config.ContainerConfig.Snapshotter)
+ ctx = ctrd.WithSnapshotter(ctx, config.Snapshotter)
 
  // cleanup allocated resources when failed
  cleanups := []func() error{}