Persist container to disk after rename

Fixes #11315

After rename occured the graphdb was updated but the container struct
was never commited back to disk, so on daemon restart it loads the old
name again.

Signed-off-by: Brian Goff <cpuguy83@gmail.com>

daemon/rename.go

@@ -1,8 +1,6 @@
 package daemon
 
-import (
-	"github.com/docker/docker/engine"
-)
+import "github.com/docker/docker/engine"
 
 func (daemon *Daemon) ContainerRename(job *engine.Job) engine.Status {
 	if len(job.Args) != 2 {
@@ -26,9 +24,21 @@ func (daemon *Daemon) ContainerRename(job *engine.Job) engine.Status {
 
 	container.Name = newName
 
+	undo := func() {
+		container.Name = oldName
+		daemon.reserveName(container.ID, oldName)
+		daemon.containerGraph.Delete(newName)
+	}
+
 	if err := daemon.containerGraph.Delete(oldName); err != nil {
+		undo()
 		return job.Errorf("Failed to delete container %q: %v", oldName, err)
 	}
 
+	if err := container.toDisk(); err != nil {
+		undo()
+		return job.Error(err)
+	}
+
 	return engine.StatusOK
 }

integration-cli/docker_cli_daemon_test.go

@@ -534,3 +534,29 @@ func TestDaemonUlimitDefaults(t *testing.T) {
 
 	logDone("daemon - default ulimits are applied")
 }
+
+// #11315
+func TestDaemonRestartRenameContainer(t *testing.T) {
+	d := NewDaemon(t)
+	if err := d.StartWithBusybox(); err != nil {
+		t.Fatal(err)
+	}
+
+	if out, err := d.Cmd("run", "--name=test", "busybox"); err != nil {
+		t.Fatal(err, out)
+	}
+
+	if out, err := d.Cmd("rename", "test", "test2"); err != nil {
+		t.Fatal(err, out)
+	}
+
+	if err := d.Restart(); err != nil {
+		t.Fatal(err)
+	}
+
+	if out, err := d.Cmd("start", "test2"); err != nil {
+		t.Fatal(err, out)
+	}
+
+	logDone("daemon - rename persists through daemon restart")
+}