github.com/jjyr/docker@v1.5.0-rc2/daemon/daemon_aufs.go (about)

     1  // +build !exclude_graphdriver_aufs
     2  
     3  package daemon
     4  
     5  import (
     6  	log "github.com/Sirupsen/logrus"
     7  	"github.com/docker/docker/daemon/graphdriver"
     8  	"github.com/docker/docker/daemon/graphdriver/aufs"
     9  	"github.com/docker/docker/graph"
    10  )
    11  
    12  // Given the graphdriver ad, if it is aufs, then migrate it.
    13  // If aufs driver is not built, this func is a noop.
    14  func migrateIfAufs(driver graphdriver.Driver, root string) error {
    15  	if ad, ok := driver.(*aufs.Driver); ok {
    16  		log.Debugf("Migrating existing containers")
    17  		if err := ad.Migrate(root, graph.SetupInitLayer); err != nil {
    18  			return err
    19  		}
    20  	}
    21  	return nil
    22  }