func (boot bootstrap) checkLastMountedCid(settings boshsettings.Settings) error {
lastMountedCid, err := boot.lastMountedCid()
if err != nil {
return bosherr.WrapError(err, "Fetching last mounted disk CID")
}
if len(settings.Disks.Persistent) == 0 || lastMountedCid == "" {
return nil
}
if _, ok := settings.PersistentDiskSettings(lastMountedCid); !ok {
return fmt.Errorf("Attached disk disagrees with previous mount")
}
return nil
}