Regression introduced by 4335d232c3e6fa144d0a2d5e49264761e91b38c7.
It takes additional cld reference to the lock, but lock forget to cancel
during normal shutdown. So this lock holds cld on the list for a long time.
And any config modification needs to cancel each lock separately.

Additional bug exist, when lock is obtained but don't processed and marked as lost lock, so two locks objects refers to the single cld instance.