github.com/tompao/docker@v1.9.1/daemon/daemon_aufs.go (about)

     1  // +build !exclude_graphdriver_aufs,linux
     2  
     3  package daemon
     4  
     5  import (
     6  	"github.com/Sirupsen/logrus"
     7  	"github.com/docker/docker/daemon/graphdriver"
     8  	"github.com/docker/docker/daemon/graphdriver/aufs"
     9  )
    10  
    11  // Given the graphdriver ad, if it is aufs, then migrate it.
    12  // If aufs driver is not built, this func is a noop.
    13  func migrateIfAufs(driver graphdriver.Driver, root string) error {
    14  	if ad, ok := driver.(*aufs.Driver); ok {
    15  		logrus.Debugf("Migrating existing containers")
    16  		if err := ad.Migrate(root, setupInitLayer); err != nil {
    17  			return err
    18  		}
    19  	}
    20  	return nil
    21  }