diff --git a/daemon/graphdriver/overlay2/mount.go b/daemon/graphdriver/overlay2/mount.go index 493960a5eb..44456bbb67 100644 --- a/daemon/graphdriver/overlay2/mount.go +++ b/daemon/graphdriver/overlay2/mount.go @@ -32,12 +32,6 @@ type mountOptions struct { } func mountFrom(dir, device, target, mType, label string) error { - - r, w, err := os.Pipe() - if err != nil { - return fmt.Errorf("mountfrom pipe failure: %v", err) - } - options := &mountOptions{ Device: device, Target: target, @@ -47,7 +41,10 @@ func mountFrom(dir, device, target, mType, label string) error { } cmd := reexec.Command("docker-mountfrom", dir) - cmd.Stdin = r + w, err := cmd.StdinPipe() + if err != nil { + return fmt.Errorf("mountfrom error on pipe creation: %v", err) + } output := bytes.NewBuffer(nil) cmd.Stdout = output