func (d *Driver) cloneFilesystem(name, parentName string) error { snapshotName := fmt.Sprintf("%d", time.Now().Nanosecond()) parentDataset := zfs.Dataset{Name: parentName} snapshot, err := parentDataset.Snapshot(snapshotName /*recursive */, false) if err != nil { return err } _, err = snapshot.Clone(name, map[string]string{"mountpoint": "legacy"}) if err == nil { d.Lock() d.filesystemsCache[name] = true d.Unlock() } if err != nil { snapshot.Destroy(zfs.DestroyDeferDeletion) return err } return snapshot.Destroy(zfs.DestroyDeferDeletion) }