daemon/graphdriver/driver_freebsd.go - third_party/github.com/moby/moby - Git at Google

 package graphdriver

 var (
 	// Slice of drivers that should be used in an order
 	priority = []string{
 		"zfs",
 	}
 )
	package graphdriver

	var (
	// Slice of drivers that should be used in an order
	priority = []string{
	"zfs",
	}
	)